annotate src/file-coding.c @ 260:052205f7dd5f

Added tag r20-5b28 for changeset 11cf20601dec
author cvs
date Mon, 13 Aug 2007 10:23:05 +0200
parents 11cf20601dec
children 405dd6d1825b
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1 /* Code conversion functions.
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2 Copyright (C) 1991, 1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.3. Not in FSF. */
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23
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24 /* Rewritten by Ben Wing <wing@666.com>. */
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25
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26 #include <config.h>
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27 #include "lisp.h"
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28 #include "buffer.h"
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29 #include "elhash.h"
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30 #include "insdel.h"
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31 #include "lstream.h"
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32 #ifdef MULE
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33 #include "mule-ccl.h"
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34 #endif
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35 #include "file-coding.h"
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36
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37 Lisp_Object Qbuffer_file_coding_system, Qcoding_system_error;
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38
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39 Lisp_Object Vkeyboard_coding_system;
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40 Lisp_Object Vterminal_coding_system;
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41 Lisp_Object Vcoding_system_for_read;
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42 Lisp_Object Vcoding_system_for_write;
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43 Lisp_Object Vfile_name_coding_system;
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44
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45 /* Table of symbols identifying each coding category. */
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46 Lisp_Object coding_category_symbol[CODING_CATEGORY_LAST + 1];
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47
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48 /* Coding system currently associated with each coding category. */
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49 Lisp_Object coding_category_system[CODING_CATEGORY_LAST + 1];
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50
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51 /* Table of all coding categories in decreasing order of priority.
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52 This describes a permutation of the possible coding categories. */
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53 int coding_category_by_priority[CODING_CATEGORY_LAST + 1];
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54
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55 Lisp_Object Qcoding_system_p;
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56
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57 Lisp_Object Qno_conversion, Qccl, Qiso2022;
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58 /* Qinternal in general.c */
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59
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60 Lisp_Object Qmnemonic, Qeol_type;
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61 Lisp_Object Qcr, Qcrlf, Qlf;
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62 Lisp_Object Qeol_cr, Qeol_crlf, Qeol_lf;
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63 Lisp_Object Qpost_read_conversion;
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64 Lisp_Object Qpre_write_conversion;
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65
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66 #ifdef MULE
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67 Lisp_Object Qbig5, Qshift_jis;
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68 Lisp_Object Qcharset_g0, Qcharset_g1, Qcharset_g2, Qcharset_g3;
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69 Lisp_Object Qforce_g0_on_output, Qforce_g1_on_output;
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70 Lisp_Object Qforce_g2_on_output, Qforce_g3_on_output;
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71 Lisp_Object Qno_iso6429;
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72 Lisp_Object Qinput_charset_conversion, Qoutput_charset_conversion;
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73 Lisp_Object Qctext;
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74 #endif
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75 Lisp_Object Qshort, Qno_ascii_eol, Qno_ascii_cntl, Qseven, Qlock_shift;
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76
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77 Lisp_Object Qencode, Qdecode, Qescape_quoted;
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78
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79 Lisp_Object Vcoding_system_hashtable;
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80
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81 int enable_multibyte_characters;
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82
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83 #ifdef MULE
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84 /* Additional information used by the ISO2022 decoder and detector. */
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85 struct iso2022_decoder
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86 {
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87 /* CHARSET holds the character sets currently assigned to the G0
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88 through G3 variables. It is initialized from the array
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89 INITIAL_CHARSET in CODESYS. */
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90 Lisp_Object charset[4];
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91
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92 /* Which registers are currently invoked into the left (GL) and
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93 right (GR) halves of the 8-bit encoding space? */
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94 int register_left, register_right;
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95
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96 /* ISO_ESC holds a value indicating part of an escape sequence
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97 that has already been seen. */
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98 enum iso_esc_flag esc;
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99
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100 /* This records the bytes we've seen so far in an escape sequence,
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101 in case the sequence is invalid (we spit out the bytes unchanged). */
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102 unsigned char esc_bytes[8];
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103
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104 /* Index for next byte to store in ISO escape sequence. */
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105 int esc_bytes_index;
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106
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107 /* Stuff seen so far when composing a string. */
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108 unsigned_char_dynarr *composite_chars;
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109
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110 /* If we saw an invalid designation sequence for a particular
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111 register, we flag it here and switch to ASCII. The next time we
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112 see a valid designation for this register, we turn off the flag
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113 and do the designation normally, but pretend the sequence was
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114 invalid. The effect of all this is that (most of the time) the
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115 escape sequences for both the switch to the unknown charset, and
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116 the switch back to the known charset, get inserted literally into
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117 the buffer and saved out as such. The hope is that we can
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118 preserve the escape sequences so that the resulting written out
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119 file makes sense. If we don't do any of this, the designation
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120 to the invalid charset will be preserved but that switch back
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121 to the known charset will probably get eaten because it was
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122 the same charset that was already present in the register. */
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123 unsigned char invalid_designated[4];
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124
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125 /* We try to do similar things as above for direction-switching
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126 sequences. If we encountered a direction switch while an
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127 invalid designation was present, or an invalid designation
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128 just after a direction switch (i.e. no valid designation
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129 encountered yet), we insert the direction-switch escape
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130 sequence literally into the output stream, and later on
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131 insert the corresponding direction-restoring escape sequence
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132 literally also. */
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133 unsigned int switched_dir_and_no_valid_charset_yet :1;
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134 unsigned int invalid_switch_dir :1;
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135
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136 /* Tells the decoder to output the escape sequence literally
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137 even though it was valid. Used in the games we play to
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138 avoid lossage when we encounter invalid designations. */
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139 unsigned int output_literally :1;
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140 /* We encountered a direction switch followed by an invalid
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141 designation. We didn't output the direction switch
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142 literally because we didn't know about the invalid designation;
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143 but we have to do so now. */
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144 unsigned int output_direction_sequence :1;
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145 };
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146 #endif
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147 Lisp_Object Fcopy_coding_system (Lisp_Object old_coding_system,
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148 Lisp_Object new_name);
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149 #ifdef MULE
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150 struct detection_state;
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151 static int detect_coding_sjis (struct detection_state *st,
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152 CONST unsigned char *src,
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153 unsigned int n);
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154 static void decode_coding_sjis (Lstream *decoding,
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155 CONST unsigned char *src,
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156 unsigned_char_dynarr *dst,
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157 unsigned int n);
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158 static void encode_coding_sjis (Lstream *encoding,
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159 CONST unsigned char *src,
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160 unsigned_char_dynarr *dst,
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161 unsigned int n);
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162 static int detect_coding_big5 (struct detection_state *st,
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163 CONST unsigned char *src,
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164 unsigned int n);
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165 static void decode_coding_big5 (Lstream *decoding,
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166 CONST unsigned char *src,
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167 unsigned_char_dynarr *dst, unsigned int n);
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168 static void encode_coding_big5 (Lstream *encoding,
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169 CONST unsigned char *src,
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170 unsigned_char_dynarr *dst, unsigned int n);
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171 static int postprocess_iso2022_mask (int mask);
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172 static void reset_iso2022 (Lisp_Object coding_system,
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173 struct iso2022_decoder *iso);
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174 static int detect_coding_iso2022 (struct detection_state *st,
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175 CONST unsigned char *src,
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176 unsigned int n);
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177 static void decode_coding_iso2022 (Lstream *decoding,
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178 CONST unsigned char *src,
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179 unsigned_char_dynarr *dst, unsigned int n);
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180 static void encode_coding_iso2022 (Lstream *encoding,
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181 CONST unsigned char *src,
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cvs
parents:
diff changeset
182 unsigned_char_dynarr *dst, unsigned int n);
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cvs
parents:
diff changeset
183 #endif /* MULE */
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cvs
parents:
diff changeset
184 static void decode_coding_no_conversion (Lstream *decoding,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
185 CONST unsigned char *src,
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cvs
parents:
diff changeset
186 unsigned_char_dynarr *dst,
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cvs
parents:
diff changeset
187 unsigned int n);
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cvs
parents:
diff changeset
188 static void encode_coding_no_conversion (Lstream *encoding,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
189 CONST unsigned char *src,
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cvs
parents:
diff changeset
190 unsigned_char_dynarr *dst,
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cvs
parents:
diff changeset
191 unsigned int n);
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cvs
parents:
diff changeset
192 static void mule_decode (Lstream *decoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
193 unsigned_char_dynarr *dst, unsigned int n);
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cvs
parents:
diff changeset
194 static void mule_encode (Lstream *encoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
195 unsigned_char_dynarr *dst, unsigned int n);
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parents:
diff changeset
196
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cvs
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diff changeset
197 typedef struct codesys_prop codesys_prop;
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cvs
parents:
diff changeset
198 struct codesys_prop
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diff changeset
199 {
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parents:
diff changeset
200 Lisp_Object sym;
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cvs
parents:
diff changeset
201 int prop_type;
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cvs
parents:
diff changeset
202 };
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cvs
parents:
diff changeset
203
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cvs
parents:
diff changeset
204 typedef struct
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cvs
parents:
diff changeset
205 {
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cvs
parents:
diff changeset
206 Dynarr_declare (codesys_prop);
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cvs
parents:
diff changeset
207 } codesys_prop_dynarr;
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cvs
parents:
diff changeset
208
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cvs
parents:
diff changeset
209 codesys_prop_dynarr *the_codesys_prop_dynarr;
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cvs
parents:
diff changeset
210
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cvs
parents:
diff changeset
211 enum codesys_prop_enum
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cvs
parents:
diff changeset
212 {
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cvs
parents:
diff changeset
213 CODESYS_PROP_ALL_OK,
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cvs
parents:
diff changeset
214 CODESYS_PROP_ISO2022,
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cvs
parents:
diff changeset
215 CODESYS_PROP_CCL
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cvs
parents:
diff changeset
216 };
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cvs
parents:
diff changeset
217
11cf20601dec Import from CVS: tag r20-5b28
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parents:
diff changeset
218
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parents:
diff changeset
219 /************************************************************************/
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cvs
parents:
diff changeset
220 /* Coding system functions */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
221 /************************************************************************/
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cvs
parents:
diff changeset
222
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parents:
diff changeset
223 static Lisp_Object mark_coding_system (Lisp_Object, void (*) (Lisp_Object));
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parents:
diff changeset
224 static void print_coding_system (Lisp_Object, Lisp_Object, int);
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parents:
diff changeset
225 static void finalize_coding_system (void *header, int for_disksave);
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diff changeset
226
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parents:
diff changeset
227 DEFINE_LRECORD_IMPLEMENTATION ("coding-system", coding_system,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
228 mark_coding_system, print_coding_system,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
229 finalize_coding_system,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
230 0, 0, struct Lisp_Coding_System);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
231
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
232 static Lisp_Object
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cvs
parents:
diff changeset
233 mark_coding_system (Lisp_Object obj, void (*markobj) (Lisp_Object))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
234 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
235 struct Lisp_Coding_System *codesys = XCODING_SYSTEM (obj);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
236
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
237 (markobj) (CODING_SYSTEM_NAME (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
238 (markobj) (CODING_SYSTEM_DOC_STRING (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
239 (markobj) (CODING_SYSTEM_MNEMONIC (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
240 (markobj) (CODING_SYSTEM_EOL_LF (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
241 (markobj) (CODING_SYSTEM_EOL_CRLF (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
242 (markobj) (CODING_SYSTEM_EOL_CR (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
243
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
244 switch (CODING_SYSTEM_TYPE (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
245 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
246 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
247 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
248 case CODESYS_ISO2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
249 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
250 (markobj) (CODING_SYSTEM_ISO2022_INITIAL_CHARSET (codesys, i));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
251 if (codesys->iso2022.input_conv)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
252 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
253 for (i = 0; i < Dynarr_length (codesys->iso2022.input_conv); i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
254 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
255 struct charset_conversion_spec *ccs =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
256 Dynarr_atp (codesys->iso2022.input_conv, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
257 (markobj) (ccs->from_charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
258 (markobj) (ccs->to_charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
259 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
260 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
261 if (codesys->iso2022.output_conv)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
262 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
263 for (i = 0; i < Dynarr_length (codesys->iso2022.output_conv); i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
264 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
265 struct charset_conversion_spec *ccs =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
266 Dynarr_atp (codesys->iso2022.output_conv, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
267 (markobj) (ccs->from_charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
268 (markobj) (ccs->to_charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
269 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
270 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
271 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
272
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
273 case CODESYS_CCL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
274 (markobj) (CODING_SYSTEM_CCL_DECODE (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
275 (markobj) (CODING_SYSTEM_CCL_ENCODE (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
276 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
277 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
278 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
279 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
280 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
281
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
282 (markobj) (CODING_SYSTEM_PRE_WRITE_CONVERSION (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
283 return CODING_SYSTEM_POST_READ_CONVERSION (codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
284 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
285
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cvs
parents:
diff changeset
286 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
287 print_coding_system (Lisp_Object obj, Lisp_Object printcharfun,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
288 int escapeflag)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
289 {
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cvs
parents:
diff changeset
290 struct Lisp_Coding_System *c = XCODING_SYSTEM (obj);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
291 if (print_readably)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
292 error ("printing unreadable object #<coding_system 0x%x>",
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
293 c->header.uid);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
294
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
295 write_c_string ("#<coding_system ", printcharfun);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
296 print_internal (c->name, printcharfun, 1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
297 write_c_string (">", printcharfun);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
298 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
299
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
300 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
301 finalize_coding_system (void *header, int for_disksave)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
302 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
303 struct Lisp_Coding_System *c = (struct Lisp_Coding_System *) header;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
304 /* Since coding systems never go away, this function is not
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
305 necessary. But it would be necessary if we changed things
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
306 so that coding systems could go away. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
307 if (!for_disksave) /* see comment in lstream.c */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
308 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
309 switch (CODING_SYSTEM_TYPE (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
310 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
311 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
312 case CODESYS_ISO2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
313 if (c->iso2022.input_conv)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
314 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
315 Dynarr_free (c->iso2022.input_conv);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
316 c->iso2022.input_conv = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
317 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
318 if (c->iso2022.output_conv)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
319 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
320 Dynarr_free (c->iso2022.output_conv);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
321 c->iso2022.output_conv = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
322 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
323 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
324 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
325 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
326 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
327 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
328 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
329 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
330
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
331 static enum eol_type
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
332 symbol_to_eol_type (Lisp_Object symbol)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
333 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
334 CHECK_SYMBOL (symbol);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
335 if (NILP (symbol)) return EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
336 if (EQ (symbol, Qlf)) return EOL_LF;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
337 if (EQ (symbol, Qcrlf)) return EOL_CRLF;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
338 if (EQ (symbol, Qcr)) return EOL_CR;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
339
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
340 signal_simple_error ("Unrecognized eol type", symbol);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
341 return EOL_AUTODETECT; /* not reached */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
342 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
343
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
344 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
345 eol_type_to_symbol (enum eol_type type)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
346 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
347 switch (type)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
348 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
349 case EOL_LF: return Qlf;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
350 case EOL_CRLF: return Qcrlf;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
351 case EOL_CR: return Qcr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
352 case EOL_AUTODETECT: return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
353 default: abort (); return Qnil; /* not reached */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
354 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
355 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
356
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
357 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
358 setup_eol_coding_systems (struct Lisp_Coding_System *codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
359 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
360 Lisp_Object codesys_obj = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
361 int len = string_length (XSYMBOL (CODING_SYSTEM_NAME (codesys))->name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
362 char *codesys_name = (char *) alloca (len + 7);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
363
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
364 int mlen = XSTRING_LENGTH(CODING_SYSTEM_MNEMONIC (codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
365 char *codesys_mnemonic = (char *) alloca (mlen + 7);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
366
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
367 Lisp_Object codesys_name_sym, sub_codesys_obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
368
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
369 /* kludge */
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cvs
parents:
diff changeset
370
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parents:
diff changeset
371 XSETCODING_SYSTEM (codesys_obj, codesys);
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cvs
parents:
diff changeset
372
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cvs
parents:
diff changeset
373 memcpy (codesys_name,
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cvs
parents:
diff changeset
374 string_data (XSYMBOL (CODING_SYSTEM_NAME (codesys))->name), len);
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cvs
parents:
diff changeset
375
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cvs
parents:
diff changeset
376 memcpy (codesys_mnemonic,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
377 XSTRING_DATA (CODING_SYSTEM_MNEMONIC (codesys)), mlen);
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cvs
parents:
diff changeset
378
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cvs
parents:
diff changeset
379 #define DEFINE_SUB_CODESYS(op_sys, op_sys_abbr, Type) do { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
380 strcpy (codesys_name + len, "-" op_sys); \
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cvs
parents:
diff changeset
381 strcpy (codesys_mnemonic + mlen, op_sys_abbr); \
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cvs
parents:
diff changeset
382 codesys_name_sym = intern (codesys_name); \
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cvs
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diff changeset
383 sub_codesys_obj = Fcopy_coding_system (codesys_obj, codesys_name_sym); \
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cvs
parents:
diff changeset
384 XCODING_SYSTEM_EOL_TYPE (sub_codesys_obj) = Type; \
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cvs
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diff changeset
385 XCODING_SYSTEM_MNEMONIC(sub_codesys_obj) = build_string(codesys_mnemonic); \
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cvs
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diff changeset
386 CODING_SYSTEM_##Type (codesys) = sub_codesys_obj; \
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cvs
parents:
diff changeset
387 } while (0)
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cvs
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diff changeset
388
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cvs
parents:
diff changeset
389 DEFINE_SUB_CODESYS("unix", "", EOL_LF);
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cvs
parents:
diff changeset
390 DEFINE_SUB_CODESYS("dos", "(T)", EOL_CRLF);
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cvs
parents:
diff changeset
391 DEFINE_SUB_CODESYS("mac", "(t)", EOL_CR);
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parents:
diff changeset
392 }
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cvs
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diff changeset
393
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cvs
parents:
diff changeset
394 DEFUN ("coding-system-p", Fcoding_system_p, 1, 1, 0, /*
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cvs
parents:
diff changeset
395 T if OBJECT is a coding system.
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cvs
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diff changeset
396 A coding system is an object that defines how text containing multiple
11cf20601dec Import from CVS: tag r20-5b28
cvs
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diff changeset
397 character sets is encoded into a stream of (typically 8-bit) bytes.
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cvs
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diff changeset
398 The coding system is used to decode the stream into a series of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
399 characters (which may be from multiple charsets) when the text is read
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
400 from a file or process, and is used to encode the text back into the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
401 same format when it is written out to a file or process.
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cvs
parents:
diff changeset
402
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cvs
parents:
diff changeset
403 For example, many ISO2022-compliant coding systems (such as Compound
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
404 Text, which is used for inter-client data under the X Window System)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
405 use escape sequences to switch between different charsets -- Japanese
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
406 Kanji, for example, is invoked with "ESC $ ( B"; ASCII is invoked
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
407 with "ESC ( B"; and Cyrillic is invoked with "ESC - L". See
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cvs
parents:
diff changeset
408 `make-coding-system' for more information.
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cvs
parents:
diff changeset
409
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cvs
parents:
diff changeset
410 Coding systems are normally identified using a symbol, and the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
411 symbol is accepted in place of the actual coding system object whenever
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
412 a coding system is called for. (This is similar to how faces work.)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
413 */
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cvs
parents:
diff changeset
414 (object))
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cvs
parents:
diff changeset
415 {
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cvs
parents:
diff changeset
416 return CODING_SYSTEMP (object) ? Qt : Qnil;
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cvs
parents:
diff changeset
417 }
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cvs
parents:
diff changeset
418
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cvs
parents:
diff changeset
419 DEFUN ("find-coding-system", Ffind_coding_system, 1, 1, 0, /*
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cvs
parents:
diff changeset
420 Retrieve the coding system of the given name.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
421
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cvs
parents:
diff changeset
422 If CODING-SYSTEM-OR-NAME is a coding-system object, it is simply
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
423 returned. Otherwise, CODING-SYSTEM-OR-NAME should be a symbol.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
424 If there is no such coding system, nil is returned. Otherwise the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
425 associated coding system object is returned.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
426 */
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cvs
parents:
diff changeset
427 (coding_system_or_name))
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cvs
parents:
diff changeset
428 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
429 if (NILP (coding_system_or_name))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
430 coding_system_or_name = Qbinary;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
431 if (CODING_SYSTEMP (coding_system_or_name))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
432 return coding_system_or_name;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
433 CHECK_SYMBOL (coding_system_or_name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
434
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
435 return Fgethash (coding_system_or_name, Vcoding_system_hashtable, Qnil);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
436 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
437
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
438 DEFUN ("get-coding-system", Fget_coding_system, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
439 Retrieve the coding system of the given name.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
440 Same as `find-coding-system' except that if there is no such
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
441 coding system, an error is signaled instead of returning nil.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
442 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
443 (name))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
444 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
445 Lisp_Object coding_system = Ffind_coding_system (name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
446
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
447 if (NILP (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
448 signal_simple_error ("No such coding system", name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
449 return coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
450 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
451
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
452 /* We store the coding systems in hash tables with the names as the key and the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
453 actual coding system object as the value. Occasionally we need to use them
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
454 in a list format. These routines provide us with that. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
455 struct coding_system_list_closure
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
456 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
457 Lisp_Object *coding_system_list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
458 };
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
459
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
460 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
461 add_coding_system_to_list_mapper (CONST void *hash_key, void *hash_contents,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
462 void *coding_system_list_closure)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
463 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
464 /* This function can GC */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
465 Lisp_Object key, contents;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
466 Lisp_Object *coding_system_list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
467 struct coding_system_list_closure *cscl =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
468 (struct coding_system_list_closure *) coding_system_list_closure;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
469 CVOID_TO_LISP (key, hash_key);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
470 VOID_TO_LISP (contents, hash_contents);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
471 coding_system_list = cscl->coding_system_list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
472
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
473 *coding_system_list = Fcons (XCODING_SYSTEM (contents)->name,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
474 *coding_system_list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
475 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
476 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
477
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
478 DEFUN ("coding-system-list", Fcoding_system_list, 0, 0, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
479 Return a list of the names of all defined coding systems.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
480 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
481 ())
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
482 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
483 Lisp_Object coding_system_list = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
484 struct gcpro gcpro1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
485 struct coding_system_list_closure coding_system_list_closure;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
486
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
487 GCPRO1 (coding_system_list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
488 coding_system_list_closure.coding_system_list = &coding_system_list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
489 elisp_maphash (add_coding_system_to_list_mapper, Vcoding_system_hashtable,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
490 &coding_system_list_closure);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
491 UNGCPRO;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
492
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
493 return coding_system_list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
494 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
495
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
496 DEFUN ("coding-system-name", Fcoding_system_name, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
497 Return the name of the given coding system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
498 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
499 (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
500 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
501 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
502 return XCODING_SYSTEM_NAME (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
503 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
504
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
505 static struct Lisp_Coding_System *
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
506 allocate_coding_system (enum coding_system_type type, Lisp_Object name)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
507 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
508 struct Lisp_Coding_System *codesys =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
509 alloc_lcrecord_type (struct Lisp_Coding_System, lrecord_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
510
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
511 zero_lcrecord (codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
512 CODING_SYSTEM_PRE_WRITE_CONVERSION (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
513 CODING_SYSTEM_POST_READ_CONVERSION (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
514 CODING_SYSTEM_EOL_TYPE (codesys) = EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
515 CODING_SYSTEM_EOL_CRLF (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
516 CODING_SYSTEM_EOL_CR (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
517 CODING_SYSTEM_EOL_LF (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
518 CODING_SYSTEM_TYPE (codesys) = type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
519 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
520 if (type == CODESYS_ISO2022)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
521 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
522 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
523 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
524 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (codesys, i) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
525 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
526 else if (type == CODESYS_CCL)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
527 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
528 CODING_SYSTEM_CCL_DECODE (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
529 CODING_SYSTEM_CCL_ENCODE (codesys) = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
530 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
531 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
532 CODING_SYSTEM_NAME (codesys) = name;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
533
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
534 return codesys;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
535 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
536
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
537 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
538 /* Given a list of charset conversion specs as specified in a Lisp
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
539 program, parse it into STORE_HERE. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
540
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
541 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
542 parse_charset_conversion_specs (charset_conversion_spec_dynarr *store_here,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
543 Lisp_Object spec_list)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
544 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
545 Lisp_Object rest;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
546
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
547 EXTERNAL_LIST_LOOP (rest, spec_list)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
548 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
549 Lisp_Object car = XCAR (rest);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
550 Lisp_Object from, to;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
551 struct charset_conversion_spec spec;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
552
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
553 if (!CONSP (car) || !CONSP (XCDR (car)) || !NILP (XCDR (XCDR (car))))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
554 signal_simple_error ("Invalid charset conversion spec", car);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
555 from = Fget_charset (XCAR (car));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
556 to = Fget_charset (XCAR (XCDR (car)));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
557 if (XCHARSET_TYPE (from) != XCHARSET_TYPE (to))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
558 signal_simple_error_2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
559 ("Attempted conversion between different charset types",
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
560 from, to);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
561 spec.from_charset = from;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
562 spec.to_charset = to;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
563
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
564 Dynarr_add (store_here, spec);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
565 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
566 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
567
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
568 /* Given a dynarr LOAD_HERE of internally-stored charset conversion
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
569 specs, return the equivalent as the Lisp programmer would see it.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
570
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
571 If LOAD_HERE is 0, return Qnil. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
572
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
573 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
574 unparse_charset_conversion_specs (charset_conversion_spec_dynarr *load_here)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
575 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
576 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
577 Lisp_Object result = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
578
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
579 if (!load_here)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
580 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
581 for (i = 0; i < Dynarr_length (load_here); i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
582 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
583 struct charset_conversion_spec *ccs =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
584 Dynarr_atp (load_here, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
585 result = Fcons (list2 (ccs->from_charset, ccs->to_charset), result);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
586 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
587
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
588 return Fnreverse (result);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
589 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
590
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
591 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
592
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
593 DEFUN ("make-coding-system", Fmake_coding_system, 2, 4, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
594 Register symbol NAME as a coding system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
595
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
596 TYPE describes the conversion method used and should be one of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
597
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
598 nil or 'undecided
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
599 Automatic conversion. XEmacs attempts to detect the coding system
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
600 used in the file.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
601 'no-conversion
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
602 No conversion. Use this for binary files and such. On output,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
603 graphic characters that are not in ASCII or Latin-1 will be
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
604 replaced by a ?. (For a no-conversion-encoded buffer, these
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
605 characters will only be present if you explicitly insert them.)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
606 'shift-jis
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
607 Shift-JIS (a Japanese encoding commonly used in PC operating systems).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
608 'iso2022
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
609 Any ISO2022-compliant encoding. Among other things, this includes
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
610 JIS (the Japanese encoding commonly used for e-mail), EUC (the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
611 standard Unix encoding for Japanese and other languages), and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
612 Compound Text (the encoding used in X11). You can specify more
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
613 specific information about the conversion with the FLAGS argument.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
614 'big5
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
615 Big5 (the encoding commonly used for Taiwanese).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
616 'ccl
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
617 The conversion is performed using a user-written pseudo-code
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
618 program. CCL (Code Conversion Language) is the name of this
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
619 pseudo-code.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
620 'internal
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
621 Write out or read in the raw contents of the memory representing
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
622 the buffer's text. This is primarily useful for debugging
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
623 purposes, and is only enabled when XEmacs has been compiled with
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
624 DEBUG_XEMACS defined (via the --debug configure option).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
625 WARNING: Reading in a file using 'internal conversion can result
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
626 in an internal inconsistency in the memory representing a
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
627 buffer's text, which will produce unpredictable results and may
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
628 cause XEmacs to crash. Under normal circumstances you should
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
629 never use 'internal conversion.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
630
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
631 DOC-STRING is a string describing the coding system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
632
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
633 PROPS is a property list, describing the specific nature of the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
634 character set. Recognized properties are:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
635
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
636 'mnemonic
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
637 String to be displayed in the modeline when this coding system is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
638 active.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
639
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
640 'eol-type
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
641 End-of-line conversion to be used. It should be one of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
642
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
643 nil
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
644 Automatically detect the end-of-line type (LF, CRLF,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
645 or CR). Also generate subsidiary coding systems named
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
646 `NAME-unix', `NAME-dos', and `NAME-mac', that are
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
647 identical to this coding system but have an EOL-TYPE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
648 value of 'lf, 'crlf, and 'cr, respectively.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
649 'lf
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
650 The end of a line is marked externally using ASCII LF.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
651 Since this is also the way that XEmacs represents an
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
652 end-of-line internally, specifying this option results
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
653 in no end-of-line conversion. This is the standard
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
654 format for Unix text files.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
655 'crlf
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
656 The end of a line is marked externally using ASCII
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
657 CRLF. This is the standard format for MS-DOS text
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
658 files.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
659 'cr
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
660 The end of a line is marked externally using ASCII CR.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
661 This is the standard format for Macintosh text files.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
662 t
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
663 Automatically detect the end-of-line type but do not
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
664 generate subsidiary coding systems. (This value is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
665 converted to nil when stored internally, and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
666 `coding-system-property' will return nil.)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
667
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
668 'post-read-conversion
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
669 Function called after a file has been read in, to perform the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
670 decoding. Called with two arguments, BEG and END, denoting
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
671 a region of the current buffer to be decoded.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
672
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
673 'pre-write-conversion
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
674 Function called before a file is written out, to perform the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
675 encoding. Called with two arguments, BEG and END, denoting
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
676 a region of the current buffer to be encoded.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
677
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
678
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
679 The following additional properties are recognized if TYPE is 'iso2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
680
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
681 'charset-g0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
682 'charset-g1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
683 'charset-g2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
684 'charset-g3
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
685 The character set initially designated to the G0 - G3 registers.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
686 The value should be one of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
687
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
688 -- A charset object (designate that character set)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
689 -- nil (do not ever use this register)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
690 -- t (no character set is initially designated to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
691 the register, but may be later on; this automatically
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
692 sets the corresponding `force-g*-on-output' property)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
693
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
694 'force-g0-on-output
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
695 'force-g1-on-output
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
696 'force-g2-on-output
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
697 'force-g2-on-output
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
698 If non-nil, send an explicit designation sequence on output before
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
699 using the specified register.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
700
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
701 'short
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
702 If non-nil, use the short forms "ESC $ @", "ESC $ A", and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
703 "ESC $ B" on output in place of the full designation sequences
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
704 "ESC $ ( @", "ESC $ ( A", and "ESC $ ( B".
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
705
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
706 'no-ascii-eol
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
707 If non-nil, don't designate ASCII to G0 at each end of line on output.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
708 Setting this to non-nil also suppresses other state-resetting that
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
709 normally happens at the end of a line.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
710
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
711 'no-ascii-cntl
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
712 If non-nil, don't designate ASCII to G0 before control chars on output.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
713
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
714 'seven
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
715 If non-nil, use 7-bit environment on output. Otherwise, use 8-bit
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
716 environment.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
717
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
718 'lock-shift
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
719 If non-nil, use locking-shift (SO/SI) instead of single-shift
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
720 or designation by escape sequence.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
721
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
722 'no-iso6429
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
723 If non-nil, don't use ISO6429's direction specification.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
724
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
725 'escape-quoted
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
726 If non-nil, literal control characters that are the same as
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
727 the beginning of a recognized ISO2022 or ISO6429 escape sequence
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
728 (in particular, ESC (0x1B), SO (0x0E), SI (0x0F), SS2 (0x8E),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
729 SS3 (0x8F), and CSI (0x9B)) are "quoted" with an escape character
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
730 so that they can be properly distinguished from an escape sequence.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
731 (Note that doing this results in a non-portable encoding.) This
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
732 encoding flag is used for byte-compiled files. Note that ESC
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
733 is a good choice for a quoting character because there are no
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
734 escape sequences whose second byte is a character from the Control-0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
735 or Control-1 character sets; this is explicitly disallowed by the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
736 ISO2022 standard.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
737
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
738 'input-charset-conversion
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
739 A list of conversion specifications, specifying conversion of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
740 characters in one charset to another when decoding is performed.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
741 Each specification is a list of two elements: the source charset,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
742 and the destination charset.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
743
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
744 'output-charset-conversion
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
745 A list of conversion specifications, specifying conversion of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
746 characters in one charset to another when encoding is performed.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
747 The form of each specification is the same as for
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
748 'input-charset-conversion.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
749
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
750
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
751 The following additional properties are recognized (and required)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
752 if TYPE is 'ccl:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
753
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
754 'decode
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
755 CCL program used for decoding (converting to internal format).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
756
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
757 'encode
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
758 CCL program used for encoding (converting to external format).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
759 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
760 (name, type, doc_string, props))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
761 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
762 struct Lisp_Coding_System *codesys;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
763 Lisp_Object rest, key, value;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
764 enum coding_system_type ty;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
765 int need_to_setup_eol_systems = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
766
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
767 /* Convert type to constant */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
768 if (NILP (type) || EQ (type, Qundecided))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
769 { ty = CODESYS_AUTODETECT; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
770 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
771 else if (EQ (type, Qshift_jis)) { ty = CODESYS_SHIFT_JIS; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
772 else if (EQ (type, Qiso2022)) { ty = CODESYS_ISO2022; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
773 else if (EQ (type, Qbig5)) { ty = CODESYS_BIG5; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
774 else if (EQ (type, Qccl)) { ty = CODESYS_CCL; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
775 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
776 else if (EQ (type, Qno_conversion)) { ty = CODESYS_NO_CONVERSION; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
777 #ifdef DEBUG_XEMACS
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
778 else if (EQ (type, Qinternal)) { ty = CODESYS_INTERNAL; }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
779 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
780 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
781 signal_simple_error ("Invalid coding system type", type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
782
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
783 CHECK_SYMBOL (name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
784
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
785 codesys = allocate_coding_system (ty, name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
786
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
787 if (NILP (doc_string))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
788 doc_string = build_string ("");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
789 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
790 CHECK_STRING (doc_string);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
791 CODING_SYSTEM_DOC_STRING (codesys) = doc_string;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
792
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
793 EXTERNAL_PROPERTY_LIST_LOOP (rest, key, value, props)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
794 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
795 if (EQ (key, Qmnemonic))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
796 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
797 if (!NILP (value))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
798 CHECK_STRING (value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
799 CODING_SYSTEM_MNEMONIC (codesys) = value;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
800 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
801
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
802 else if (EQ (key, Qeol_type))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
803 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
804 need_to_setup_eol_systems = NILP (value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
805 if (EQ (value, Qt))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
806 value = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
807 CODING_SYSTEM_EOL_TYPE (codesys) = symbol_to_eol_type (value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
808 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
809
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
810 else if (EQ (key, Qpost_read_conversion)) CODING_SYSTEM_POST_READ_CONVERSION (codesys) = value;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
811 else if (EQ (key, Qpre_write_conversion)) CODING_SYSTEM_PRE_WRITE_CONVERSION (codesys) = value;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
812 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
813 else if (ty == CODESYS_ISO2022)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
814 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
815 #define FROB_INITIAL_CHARSET(charset_num) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
816 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (codesys, charset_num) = \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
817 ((EQ (value, Qt) || EQ (value, Qnil)) ? value : Fget_charset (value))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
818
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
819 if (EQ (key, Qcharset_g0)) FROB_INITIAL_CHARSET (0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
820 else if (EQ (key, Qcharset_g1)) FROB_INITIAL_CHARSET (1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
821 else if (EQ (key, Qcharset_g2)) FROB_INITIAL_CHARSET (2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
822 else if (EQ (key, Qcharset_g3)) FROB_INITIAL_CHARSET (3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
823
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
824 #define FROB_FORCE_CHARSET(charset_num) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
825 CODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT (codesys, charset_num) = !NILP (value)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
826
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
827 else if (EQ (key, Qforce_g0_on_output)) FROB_FORCE_CHARSET (0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
828 else if (EQ (key, Qforce_g1_on_output)) FROB_FORCE_CHARSET (1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
829 else if (EQ (key, Qforce_g2_on_output)) FROB_FORCE_CHARSET (2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
830 else if (EQ (key, Qforce_g3_on_output)) FROB_FORCE_CHARSET (3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
831
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
832 #define FROB_BOOLEAN_PROPERTY(prop) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
833 CODING_SYSTEM_ISO2022_##prop (codesys) = !NILP (value)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
834
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
835 else if (EQ (key, Qshort)) FROB_BOOLEAN_PROPERTY (SHORT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
836 else if (EQ (key, Qno_ascii_eol)) FROB_BOOLEAN_PROPERTY (NO_ASCII_EOL);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
837 else if (EQ (key, Qno_ascii_cntl)) FROB_BOOLEAN_PROPERTY (NO_ASCII_CNTL);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
838 else if (EQ (key, Qseven)) FROB_BOOLEAN_PROPERTY (SEVEN);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
839 else if (EQ (key, Qlock_shift)) FROB_BOOLEAN_PROPERTY (LOCK_SHIFT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
840 else if (EQ (key, Qno_iso6429)) FROB_BOOLEAN_PROPERTY (NO_ISO6429);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
841 else if (EQ (key, Qescape_quoted)) FROB_BOOLEAN_PROPERTY (ESCAPE_QUOTED);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
842
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
843 else if (EQ (key, Qinput_charset_conversion))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
844 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
845 codesys->iso2022.input_conv =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
846 Dynarr_new (charset_conversion_spec);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
847 parse_charset_conversion_specs (codesys->iso2022.input_conv,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
848 value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
849 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
850 else if (EQ (key, Qoutput_charset_conversion))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
851 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
852 codesys->iso2022.output_conv =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
853 Dynarr_new (charset_conversion_spec);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
854 parse_charset_conversion_specs (codesys->iso2022.output_conv,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
855 value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
856 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
857 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
858 signal_simple_error ("Unrecognized property", key);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
859 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
860 else if (EQ (type, Qccl))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
861 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
862 if (EQ (key, Qdecode))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
863 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
864 CHECK_VECTOR (value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
865 CODING_SYSTEM_CCL_DECODE (codesys) = value;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
866 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
867 else if (EQ (key, Qencode))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
868 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
869 CHECK_VECTOR (value);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
870 CODING_SYSTEM_CCL_ENCODE (codesys) = value;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
871 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
872 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
873 signal_simple_error ("Unrecognized property", key);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
874 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
875 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
876 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
877 signal_simple_error ("Unrecognized property", key);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
878 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
879
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
880 if (need_to_setup_eol_systems)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
881 setup_eol_coding_systems (codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
882
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
883 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
884 Lisp_Object codesys_obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
885 XSETCODING_SYSTEM (codesys_obj, codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
886 Fputhash (name, codesys_obj, Vcoding_system_hashtable);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
887 return codesys_obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
888 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
889 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
890
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
891 DEFUN ("copy-coding-system", Fcopy_coding_system, 2, 2, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
892 Copy OLD-CODING-SYSTEM to NEW-NAME.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
893 If NEW-NAME does not name an existing coding system, a new one will
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
894 be created.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
895 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
896 (old_coding_system, new_name))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
897 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
898 Lisp_Object new_coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
899 old_coding_system = Fget_coding_system (old_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
900 new_coding_system = Ffind_coding_system (new_name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
901 if (NILP (new_coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
902 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
903 XSETCODING_SYSTEM (new_coding_system,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
904 allocate_coding_system
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
905 (XCODING_SYSTEM_TYPE (old_coding_system),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
906 new_name));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
907 Fputhash (new_name, new_coding_system, Vcoding_system_hashtable);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
908 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
909
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
910 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
911 struct Lisp_Coding_System *to = XCODING_SYSTEM (new_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
912 struct Lisp_Coding_System *from = XCODING_SYSTEM (old_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
913 memcpy (((char *) to ) + sizeof (to->header),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
914 ((char *) from) + sizeof (from->header),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
915 sizeof (*from) - sizeof (from->header));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
916 to->name = new_name;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
917 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
918 return new_coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
919 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
920
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
921 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
922 subsidiary_coding_system (Lisp_Object coding_system, enum eol_type type)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
923 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
924 struct Lisp_Coding_System *cs = XCODING_SYSTEM (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
925 Lisp_Object new_coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
926
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
927 if (CODING_SYSTEM_EOL_TYPE (cs) != EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
928 return coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
929
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
930 switch (type)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
931 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
932 case EOL_AUTODETECT: return coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
933 case EOL_LF: new_coding_system = CODING_SYSTEM_EOL_LF (cs); break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
934 case EOL_CR: new_coding_system = CODING_SYSTEM_EOL_CR (cs); break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
935 case EOL_CRLF: new_coding_system = CODING_SYSTEM_EOL_CRLF (cs); break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
936 default: abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
937 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
938
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
939 return NILP (new_coding_system) ? coding_system : new_coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
940 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
941
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
942 DEFUN ("subsidiary-coding-system", Fsubsidiary_coding_system, 2, 2, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
943 Return the subsidiary coding system of CODING-SYSTEM with eol type EOL-TYPE.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
944 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
945 (coding_system, eol_type))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
946 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
947 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
948
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
949 return subsidiary_coding_system (coding_system,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
950 symbol_to_eol_type (eol_type));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
951 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
952
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
953
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
954 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
955 /* Coding system accessors */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
956 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
957
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
958 DEFUN ("coding-system-doc-string", Fcoding_system_doc_string, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
959 Return the doc string for CODING-SYSTEM.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
960 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
961 (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
962 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
963 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
964 return XCODING_SYSTEM_DOC_STRING (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
965 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
966
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
967 DEFUN ("coding-system-type", Fcoding_system_type, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
968 Return the type of CODING-SYSTEM.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
969 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
970 (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
971 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
972 switch (XCODING_SYSTEM_TYPE (Fget_coding_system (coding_system)))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
973 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
974 case CODESYS_AUTODETECT: return Qundecided;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
975 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
976 case CODESYS_SHIFT_JIS: return Qshift_jis;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
977 case CODESYS_ISO2022: return Qiso2022;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
978 case CODESYS_BIG5: return Qbig5;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
979 case CODESYS_CCL: return Qccl;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
980 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
981 case CODESYS_NO_CONVERSION: return Qno_conversion;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
982 #ifdef DEBUG_XEMACS
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
983 case CODESYS_INTERNAL: return Qinternal;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
984 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
985 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
986 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
987 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
988
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
989 return Qnil; /* not reached */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
990 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
991
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
992 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
993 static
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
994 Lisp_Object coding_system_charset (Lisp_Object coding_system, int gnum)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
995 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
996 Lisp_Object cs
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
997 = XCODING_SYSTEM_ISO2022_INITIAL_CHARSET (coding_system, gnum);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
998
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
999 if (CHARSETP(cs)){
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1000 return XCHARSET_NAME(cs);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1001 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1002 else {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1003 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1004 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1005 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1006
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1007 DEFUN ("coding-system-charset", Fcoding_system_charset, 2, 2, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1008 Return initial charset of CODING-SYSTEM designated to GNUM.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1009 GNUM allows 0 .. 3.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1010 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1011 (coding_system, gnum))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1012 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1013 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1014 CHECK_INT (gnum);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1015
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1016 return coding_system_charset(coding_system, XINT (gnum));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1017 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1018 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1019
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1020 DEFUN ("coding-system-property", Fcoding_system_property, 2, 2, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1021 Return the PROP property of CODING-SYSTEM.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1022 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1023 (coding_system, prop))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1024 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1025 int i, ok = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1026 enum coding_system_type type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1027
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1028 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1029 CHECK_SYMBOL (prop);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1030 type = XCODING_SYSTEM_TYPE (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1031
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1032 for (i = 0; !ok && i < Dynarr_length (the_codesys_prop_dynarr); i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1033 if (EQ (Dynarr_at (the_codesys_prop_dynarr, i).sym, prop))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1034 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1035 ok = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1036 switch (Dynarr_at (the_codesys_prop_dynarr, i).prop_type)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1037 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1038 case CODESYS_PROP_ALL_OK:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1039 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1040 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1041 case CODESYS_PROP_ISO2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1042 if (type != CODESYS_ISO2022)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1043 signal_simple_error
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1044 ("Property only valid in ISO2022 coding systems",
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1045 prop);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1046 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1047
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1048 case CODESYS_PROP_CCL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1049 if (type != CODESYS_CCL)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1050 signal_simple_error
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1051 ("Property only valid in CCL coding systems",
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1052 prop);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1053 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1054 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1055 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1056 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1057 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1058 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1059
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1060 if (!ok)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1061 signal_simple_error ("Unrecognized property", prop);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1062
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1063 if (EQ (prop, Qname))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1064 return XCODING_SYSTEM_NAME (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1065 else if (EQ (prop, Qtype))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1066 return Fcoding_system_type (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1067 else if (EQ (prop, Qdoc_string))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1068 return XCODING_SYSTEM_DOC_STRING (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1069 else if (EQ (prop, Qmnemonic))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1070 return XCODING_SYSTEM_MNEMONIC (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1071 else if (EQ (prop, Qeol_type))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1072 return eol_type_to_symbol (XCODING_SYSTEM_EOL_TYPE (coding_system));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1073 else if (EQ (prop, Qeol_lf))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1074 return XCODING_SYSTEM_EOL_LF (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1075 else if (EQ (prop, Qeol_crlf))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1076 return XCODING_SYSTEM_EOL_CRLF (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1077 else if (EQ (prop, Qeol_cr))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1078 return XCODING_SYSTEM_EOL_CR (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1079 else if (EQ (prop, Qpost_read_conversion))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1080 return XCODING_SYSTEM_POST_READ_CONVERSION (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1081 else if (EQ (prop, Qpre_write_conversion))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1082 return XCODING_SYSTEM_PRE_WRITE_CONVERSION (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1083 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1084 else if (type == CODESYS_ISO2022)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1085 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1086 if (EQ (prop, Qcharset_g0))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1087 return coding_system_charset (coding_system, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1088 else if (EQ (prop, Qcharset_g1))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1089 return coding_system_charset (coding_system, 1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1090 else if (EQ (prop, Qcharset_g2))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1091 return coding_system_charset (coding_system, 2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1092 else if (EQ (prop, Qcharset_g3))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1093 return coding_system_charset (coding_system, 3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1094
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1095 #define FORCE_CHARSET(charset_num) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1096 (XCODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1097 (coding_system, charset_num) ? Qt : Qnil)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1098
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1099 else if (EQ (prop, Qforce_g0_on_output)) return FORCE_CHARSET (0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1100 else if (EQ (prop, Qforce_g1_on_output)) return FORCE_CHARSET (1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1101 else if (EQ (prop, Qforce_g2_on_output)) return FORCE_CHARSET (2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1102 else if (EQ (prop, Qforce_g3_on_output)) return FORCE_CHARSET (3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1103
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1104 #define LISP_BOOLEAN(prop) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1105 (XCODING_SYSTEM_ISO2022_##prop (coding_system) ? Qt : Qnil)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1106
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1107 else if (EQ (prop, Qshort)) return LISP_BOOLEAN (SHORT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1108 else if (EQ (prop, Qno_ascii_eol)) return LISP_BOOLEAN (NO_ASCII_EOL);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1109 else if (EQ (prop, Qno_ascii_cntl)) return LISP_BOOLEAN (NO_ASCII_CNTL);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1110 else if (EQ (prop, Qseven)) return LISP_BOOLEAN (SEVEN);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1111 else if (EQ (prop, Qlock_shift)) return LISP_BOOLEAN (LOCK_SHIFT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1112 else if (EQ (prop, Qno_iso6429)) return LISP_BOOLEAN (NO_ISO6429);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1113 else if (EQ (prop, Qescape_quoted)) return LISP_BOOLEAN (ESCAPE_QUOTED);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1114
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1115 else if (EQ (prop, Qinput_charset_conversion))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1116 return
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1117 unparse_charset_conversion_specs
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1118 (XCODING_SYSTEM (coding_system)->iso2022.input_conv);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1119 else if (EQ (prop, Qoutput_charset_conversion))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1120 return
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1121 unparse_charset_conversion_specs
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1122 (XCODING_SYSTEM (coding_system)->iso2022.output_conv);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1123 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1124 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1125 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1126 else if (type == CODESYS_CCL)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1127 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1128 if (EQ (prop, Qdecode))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1129 return XCODING_SYSTEM_CCL_DECODE (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1130 else if (EQ (prop, Qencode))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1131 return XCODING_SYSTEM_CCL_ENCODE (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1132 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1133 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1134 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1135 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1136 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1137 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1138
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1139 return Qnil; /* not reached */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1140 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1141
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1142
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1143 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1144 /* Coding category functions */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1145 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1146
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1147 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1148 decode_coding_category (Lisp_Object symbol)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1149 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1150 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1151
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1152 CHECK_SYMBOL (symbol);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1153 for (i = 0; i <= CODING_CATEGORY_LAST; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1154 if (EQ (coding_category_symbol[i], symbol))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1155 return i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1156
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1157 signal_simple_error ("Unrecognized coding category", symbol);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1158 return 0; /* not reached */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1159 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1160
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1161 DEFUN ("coding-category-list", Fcoding_category_list, 0, 0, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1162 Return a list of all recognized coding categories.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1163 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1164 ())
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1165 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1166 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1167 Lisp_Object list = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1168
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1169 for (i = CODING_CATEGORY_LAST; i >= 0; i--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1170 list = Fcons (coding_category_symbol[i], list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1171 return list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1172 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1173
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1174 DEFUN ("set-coding-priority-list", Fset_coding_priority_list, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1175 Change the priority order of the coding categories.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1176 LIST should be list of coding categories, in descending order of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1177 priority. Unspecified coding categories will be lower in priority
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1178 than all specified ones, in the same relative order they were in
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1179 previously.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1180 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1181 (list))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1182 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1183 int category_to_priority[CODING_CATEGORY_LAST + 1];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1184 int i, j;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1185 Lisp_Object rest;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1186
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1187 /* First generate a list that maps coding categories to priorities. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1188
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1189 for (i = 0; i <= CODING_CATEGORY_LAST; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1190 category_to_priority[i] = -1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1191
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1192 /* Highest priority comes from the specified list. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1193 i = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1194 EXTERNAL_LIST_LOOP (rest, list)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1195 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1196 int cat = decode_coding_category (XCAR (rest));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1197
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1198 if (category_to_priority[cat] >= 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1199 signal_simple_error ("Duplicate coding category in list", XCAR (rest));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1200 category_to_priority[cat] = i++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1201 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1202
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1203 /* Now go through the existing categories by priority to retrieve
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1204 the categories not yet specified and preserve their priority
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1205 order. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1206 for (j = 0; j <= CODING_CATEGORY_LAST; j++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1207 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1208 int cat = coding_category_by_priority[j];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1209 if (category_to_priority[cat] < 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1210 category_to_priority[cat] = i++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1211 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1212
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1213 /* Now we need to construct the inverse of the mapping we just
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1214 constructed. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1215
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1216 for (i = 0; i <= CODING_CATEGORY_LAST; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1217 coding_category_by_priority[category_to_priority[i]] = i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1218
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1219 /* Phew! That was confusing. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1220 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1221 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1222
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1223 DEFUN ("coding-priority-list", Fcoding_priority_list, 0, 0, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1224 Return a list of coding categories in descending order of priority.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1225 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1226 ())
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1227 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1228 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1229 Lisp_Object list = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1230
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1231 for (i = CODING_CATEGORY_LAST; i >= 0; i--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1232 list = Fcons (coding_category_symbol[coding_category_by_priority[i]],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1233 list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1234 return list;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1235 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1236
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1237 DEFUN ("set-coding-category-system", Fset_coding_category_system, 2, 2, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1238 Change the coding system associated with a coding category.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1239 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1240 (coding_category, coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1241 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1242 int cat = decode_coding_category (coding_category);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1243
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1244 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1245 coding_category_system[cat] = coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1246 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1247 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1248
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1249 DEFUN ("coding-category-system", Fcoding_category_system, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1250 Return the coding system associated with a coding category.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1251 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1252 (coding_category))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1253 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1254 int cat = decode_coding_category (coding_category);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1255 Lisp_Object sys = coding_category_system[cat];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1256
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1257 if (!NILP (sys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1258 return XCODING_SYSTEM_NAME (sys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1259 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1260 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1261
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1262
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1263 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1264 /* Detecting the encoding of data */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1265 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1266
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1267 struct detection_state
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1268 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1269 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1270 int seen_non_ascii;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1271 int mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1272 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1273 struct
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1274 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1275 int mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1276 int in_second_byte;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1277 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1278 big5;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1279
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1280 struct
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1281 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1282 int mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1283 int in_second_byte;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1284 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1285 shift_jis;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1286
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1287 struct
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1288 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1289 int mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1290 int initted;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1291 struct iso2022_decoder iso;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1292 unsigned int flags;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1293 int high_byte_count;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1294 unsigned int saw_single_shift:1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1295 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1296 iso2022;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1297 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1298 struct
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1299 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1300 int seen_anything;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1301 int just_saw_cr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1302 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1303 eol;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1304 };
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1305
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1306 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1307 acceptable_control_char_p (int c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1308 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1309 switch (c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1310 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1311 /* Allow and ignore control characters that you might
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1312 reasonably see in a text file */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1313 case '\r':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1314 case '\n':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1315 case '\t':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1316 case 7: /* bell */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1317 case 8: /* backspace */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1318 case 11: /* vertical tab */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1319 case 12: /* form feed */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1320 case 26: /* MS-DOS C-z junk */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1321 case 31: /* '^_' -- for info */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1322 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1323 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1324 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1325 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1326 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1327
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1328 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1329 mask_has_at_most_one_bit_p (int mask)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1330 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1331 /* Perhaps the only thing useful you learn from intensive Microsoft
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1332 technical interviews */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1333 return (mask & (mask - 1)) == 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1334 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1335
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1336 static enum eol_type
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1337 detect_eol_type (struct detection_state *st, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1338 unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1339 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1340 int c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1341
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1342 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1343 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1344 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1345 if (c == '\r')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1346 st->eol.just_saw_cr = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1347 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1348 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1349 if (c == '\n')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1350 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1351 if (st->eol.just_saw_cr)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1352 return EOL_CRLF;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1353 else if (st->eol.seen_anything)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1354 return EOL_LF;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1355 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1356 else if (st->eol.just_saw_cr)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1357 return EOL_CR;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1358 st->eol.just_saw_cr = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1359 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1360 st->eol.seen_anything = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1361 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1362
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1363 return EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1364 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1365
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1366 /* Attempt to determine the encoding and EOL type of the given text.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1367 Before calling this function for the first type, you must initialize
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1368 st->eol_type as appropriate and initialize st->mask to ~0.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1369
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1370 st->eol_type holds the determined EOL type, or EOL_AUTODETECT if
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1371 not yet known.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1372
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1373 st->mask holds the determined coding category mask, or ~0 if only
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1374 ASCII has been seen so far.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1375
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1376 Returns:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1377
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1378 0 == st->eol_type is EOL_AUTODETECT and/or more than coding category
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1379 is present in st->mask
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1380 1 == definitive answers are here for both st->eol_type and st->mask
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1381 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1382
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1383 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1384 detect_coding_type (struct detection_state *st, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1385 unsigned int n, int just_do_eol)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1386 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1387 int c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1388
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1389 if (st->eol_type == EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1390 st->eol_type = detect_eol_type (st, src, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1391
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1392 if (just_do_eol)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1393 return st->eol_type != EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1394
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1395 if (!st->seen_non_ascii)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1396 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1397 for (; n; n--, src++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1398 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1399 c = *src;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1400 if ((c < 0x20 && !acceptable_control_char_p (c)) || c >= 0x80)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1401 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1402 st->seen_non_ascii = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1403 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1404 st->shift_jis.mask = ~0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1405 st->big5.mask = ~0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1406 st->iso2022.mask = ~0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1407 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1408 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1409 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1410 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1411 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1412
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1413 if (!n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1414 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1415 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1416 if (!mask_has_at_most_one_bit_p (st->iso2022.mask))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1417 st->iso2022.mask = detect_coding_iso2022 (st, src, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1418 if (!mask_has_at_most_one_bit_p (st->shift_jis.mask))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1419 st->shift_jis.mask = detect_coding_sjis (st, src, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1420 if (!mask_has_at_most_one_bit_p (st->big5.mask))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1421 st->big5.mask = detect_coding_big5 (st, src, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1422
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1423 st->mask = st->iso2022.mask | st->shift_jis.mask | st->big5.mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1424 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1425 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1426 int retval = mask_has_at_most_one_bit_p (st->mask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1427 st->mask |= CODING_CATEGORY_NO_CONVERSION_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1428 return retval && st->eol_type != EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1429 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1430 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1431
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1432 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1433 coding_system_from_mask (int mask)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1434 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1435 if (mask == ~0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1436 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1437 /* If the file was entirely or basically ASCII, use the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1438 default value of `buffer-file-coding-system'. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1439 Lisp_Object retval =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1440 XBUFFER (Vbuffer_defaults)->buffer_file_coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1441 if (!NILP (retval))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1442 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1443 retval = Ffind_coding_system (retval);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1444 if (NILP (retval))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1445 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1446 warn_when_safe
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1447 (Qbad_variable, Qwarning,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1448 "Invalid `default-buffer-file-coding-system', set to nil");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1449 XBUFFER (Vbuffer_defaults)->buffer_file_coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1450 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1451 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1452 if (NILP (retval))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1453 retval = Fget_coding_system (Qno_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1454 return retval;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1455 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1456 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1457 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1458 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1459 int cat = -1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1460 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1461 mask = postprocess_iso2022_mask (mask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1462 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1463 /* Look through the coding categories by priority and find
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1464 the first one that is allowed. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1465 for (i = 0; i <= CODING_CATEGORY_LAST; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1466 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1467 cat = coding_category_by_priority[i];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1468 if ((mask & (1 << cat)) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1469 !NILP (coding_category_system[cat]))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1470 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1471 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1472 if (cat >= 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1473 return coding_category_system[cat];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1474 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1475 return Fget_coding_system (Qno_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1476 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1477 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1478
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1479 /* Given a seekable read stream and potential coding system and EOL type
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1480 as specified, do any autodetection that is called for. If the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1481 coding system and/or EOL type are not autodetect, they will be left
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1482 alone; but this function will never return an autodetect coding system
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1483 or EOL type.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1484
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1485 This function does not automatically fetch subsidiary coding systems;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1486 that should be unnecessary with the explicit eol-type argument. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1487
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1488 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1489 determine_real_coding_system (Lstream *stream, Lisp_Object *codesys_in_out,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1490 enum eol_type *eol_type_in_out)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1491 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1492 struct detection_state decst;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1493
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1494 if (*eol_type_in_out == EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1495 *eol_type_in_out = XCODING_SYSTEM_EOL_TYPE (*codesys_in_out);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1496
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1497 memset (&decst, 0, sizeof (decst));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1498 decst.eol_type = *eol_type_in_out;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1499 decst.mask = ~0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1500
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1501 /* If autodetection is called for, do it now. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1502 if (XCODING_SYSTEM_TYPE (*codesys_in_out) == CODESYS_AUTODETECT ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1503 *eol_type_in_out == EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1504 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1505
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1506 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1507 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1508 unsigned char random_buffer[4096];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1509 int nread;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1510
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1511 nread = Lstream_read (stream, random_buffer, sizeof (random_buffer));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1512 if (!nread)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1513 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1514 if (detect_coding_type (&decst, random_buffer, nread,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1515 XCODING_SYSTEM_TYPE (*codesys_in_out) !=
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1516 CODESYS_AUTODETECT))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1517 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1518 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1519
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1520 *eol_type_in_out = decst.eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1521 if (XCODING_SYSTEM_TYPE (*codesys_in_out) == CODESYS_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1522 *codesys_in_out = coding_system_from_mask (decst.mask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1523 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1524
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1525 /* If we absolutely can't determine the EOL type, just assume LF. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1526 if (*eol_type_in_out == EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1527 *eol_type_in_out = EOL_LF;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1528
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1529 Lstream_rewind (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1530 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1531
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1532 DEFUN ("detect-coding-region", Fdetect_coding_region, 2, 3, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1533 Detect coding system of the text in the region between START and END.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1534 Returned a list of possible coding systems ordered by priority.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1535 If only ASCII characters are found, it returns 'undecided or one of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1536 its subsidiary coding systems according to a detected end-of-line
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1537 type. Optional arg BUFFER defaults to the current buffer.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1538 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1539 (start, end, buffer))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1540 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1541 Lisp_Object val = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1542 struct buffer *buf = decode_buffer (buffer, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1543 Bufpos b, e;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1544 Lisp_Object instream, lb_instream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1545 Lstream *istr, *lb_istr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1546 struct detection_state decst;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1547 struct gcpro gcpro1, gcpro2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1548
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1549 get_buffer_range_char (buf, start, end, &b, &e, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1550 lb_instream = make_lisp_buffer_input_stream (buf, b, e, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1551 lb_istr = XLSTREAM (lb_instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1552 instream = make_encoding_input_stream (lb_istr, Fget_coding_system (Qbinary));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1553 istr = XLSTREAM (instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1554 GCPRO2 (instream, lb_instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1555 memset (&decst, 0, sizeof (decst));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1556 decst.eol_type = EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1557 decst.mask = ~0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1558 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1559 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1560 unsigned char random_buffer[4096];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1561 int nread = Lstream_read (istr, random_buffer, sizeof (random_buffer));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1562
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1563 if (!nread)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1564 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1565 if (detect_coding_type (&decst, random_buffer, nread, 0))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1566 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1567 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1568
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1569 if (decst.mask == ~0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1570 val = subsidiary_coding_system (Fget_coding_system (Qundecided),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1571 decst.eol_type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1572 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1573 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1574 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1575
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1576 val = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1577 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1578 decst.mask = postprocess_iso2022_mask (decst.mask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1579 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1580 for (i = CODING_CATEGORY_LAST; i >= 0; i--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1581 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1582 int sys = coding_category_by_priority[i];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1583 if (decst.mask & (1 << sys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1584 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1585 Lisp_Object codesys = coding_category_system[sys];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1586 if (!NILP (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1587 codesys = subsidiary_coding_system (codesys, decst.eol_type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1588 val = Fcons (codesys, val);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1589 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1590 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1591 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1592 Lstream_close (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1593 UNGCPRO;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1594 Lstream_delete (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1595 Lstream_delete (lb_istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1596 return val;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1597 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1598
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1599
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1600 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1601 /* Converting to internal Mule format ("decoding") */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1602 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1603
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1604 /* A decoding stream is a stream used for decoding text (i.e.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1605 converting from some external format to internal format).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1606 The decoding-stream object keeps track of the actual coding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1607 stream, the stream that is at the other end, and data that
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1608 needs to be persistent across the lifetime of the stream. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1609
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1610 /* Handle the EOL stuff related to just-read-in character C.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1611 EOL_TYPE is the EOL type of the coding stream.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1612 FLAGS is the current value of FLAGS in the coding stream, and may
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1613 be modified by this macro. (The macro only looks at the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1614 CODING_STATE_CR flag.) DST is the Dynarr to which the decoded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1615 bytes are to be written. You need to also define a local goto
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1616 label "label_continue_loop" that is at the end of the main
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1617 character-reading loop.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1618
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1619 If C is a CR character, then this macro handles it entirely and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1620 jumps to label_continue_loop. Otherwise, this macro does not add
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1621 anything to DST, and continues normally. You should continue
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1622 processing C normally after this macro. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1623
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1624 #define DECODE_HANDLE_EOL_TYPE(eol_type, c, flags, dst) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1625 do { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1626 if (c == '\r') \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1627 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1628 if (eol_type == EOL_CR) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1629 Dynarr_add (dst, '\n'); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1630 else if (eol_type != EOL_CRLF || flags & CODING_STATE_CR) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1631 Dynarr_add (dst, c); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1632 else \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1633 flags |= CODING_STATE_CR; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1634 goto label_continue_loop; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1635 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1636 else if (flags & CODING_STATE_CR) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1637 { /* eol_type == CODING_SYSTEM_EOL_CRLF */ \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1638 if (c != '\n') \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1639 Dynarr_add (dst, '\r'); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1640 flags &= ~CODING_STATE_CR; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1641 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1642 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1643
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1644 /* C should be a binary character in the range 0 - 255; convert
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1645 to internal format and add to Dynarr DST. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1646
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1647 #define DECODE_ADD_BINARY_CHAR(c, dst) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1648 do { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1649 if (BYTE_ASCII_P (c)) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1650 Dynarr_add (dst, c); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1651 else if (BYTE_C1_P (c)) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1652 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1653 Dynarr_add (dst, LEADING_BYTE_CONTROL_1); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1654 Dynarr_add (dst, c + 0x20); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1655 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1656 else \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1657 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1658 Dynarr_add (dst, LEADING_BYTE_LATIN_ISO8859_1); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1659 Dynarr_add (dst, c); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1660 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1661 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1662
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1663 #define DECODE_OUTPUT_PARTIAL_CHAR(ch) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1664 do { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1665 if (ch) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1666 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1667 DECODE_ADD_BINARY_CHAR (ch, dst); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1668 ch = 0; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1669 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1670 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1671
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1672 #define DECODE_HANDLE_END_OF_CONVERSION(flags, ch, dst) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1673 do { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1674 DECODE_OUTPUT_PARTIAL_CHAR (ch); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1675 if ((flags & CODING_STATE_END) && \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1676 (flags & CODING_STATE_CR)) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1677 Dynarr_add (dst, '\r'); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1678 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1679
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1680 #define DECODING_STREAM_DATA(stream) LSTREAM_TYPE_DATA (stream, decoding)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1681
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1682 struct decoding_stream
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1683 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1684 /* Coding system that governs the conversion. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1685 struct Lisp_Coding_System *codesys;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1686
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1687 /* Stream that we read the encoded data from or
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1688 write the decoded data to. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1689 Lstream *other_end;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1690
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1691 /* If we are reading, then we can return only a fixed amount of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1692 data, so if the conversion resulted in too much data, we store it
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1693 here for retrieval the next time around. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1694 unsigned_char_dynarr *runoff;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1695
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1696 /* FLAGS holds flags indicating the current state of the decoding.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1697 Some of these flags are dependent on the coding system. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1698 unsigned int flags;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1699
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1700 /* CH holds a partially built-up character. Since we only deal
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1701 with one- and two-byte characters at the moment, we only use
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1702 this to store the first byte of a two-byte character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1703 unsigned int ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1704
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1705 /* EOL_TYPE specifies the type of end-of-line conversion that
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1706 currently applies. We need to keep this separate from the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1707 EOL type stored in CODESYS because the latter might indicate
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1708 automatic EOL-type detection while the former will always
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1709 indicate a particular EOL type. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1710 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1711 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1712 /* Additional ISO2022 information. We define the structure above
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1713 because it's also needed by the detection routines. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1714 struct iso2022_decoder iso2022;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1715
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1716 /* Additional information (the state of the running CCL program)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1717 used by the CCL decoder. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1718 struct ccl_program ccl;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1719 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1720 struct detection_state decst;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1721 };
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1722
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1723 static int decoding_reader (Lstream *stream, unsigned char *data, int size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1724 static int decoding_writer (Lstream *stream, CONST unsigned char *data, int size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1725 static int decoding_rewinder (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1726 static int decoding_seekable_p (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1727 static int decoding_flusher (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1728 static int decoding_closer (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1729
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1730 static Lisp_Object decoding_marker (Lisp_Object stream,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1731 void (*markobj) (Lisp_Object));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1732
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1733 DEFINE_LSTREAM_IMPLEMENTATION ("decoding", lstream_decoding,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1734 sizeof (struct decoding_stream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1735
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1736 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1737 decoding_marker (Lisp_Object stream, void (*markobj) (Lisp_Object))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1738 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1739 Lstream *str = DECODING_STREAM_DATA (XLSTREAM (stream))->other_end;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1740 Lisp_Object str_obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1741
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1742 /* We do not need to mark the coding systems or charsets stored
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1743 within the stream because they are stored in a global list
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1744 and automatically marked. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1745
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1746 XSETLSTREAM (str_obj, str);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1747 (markobj) (str_obj);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1748 if (str->imp->marker)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1749 return (str->imp->marker) (str_obj, markobj);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1750 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1751 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1752 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1753
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1754 /* Read SIZE bytes of data and store it into DATA. We are a decoding stream
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1755 so we read data from the other end, decode it, and store it into DATA. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1756
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1757 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1758 decoding_reader (Lstream *stream, unsigned char *data, int size)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1759 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1760 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1761 unsigned char *orig_data = data;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1762 int read_size;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1763 int error_occurred = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1764
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1765 /* We need to interface to mule_decode(), which expects to take some
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1766 amount of data and store the result into a Dynarr. We have
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1767 mule_decode() store into str->runoff, and take data from there
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1768 as necessary. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1769
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1770 /* We loop until we have enough data, reading chunks from the other
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1771 end and decoding it. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1772 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1773 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1774 /* Take data from the runoff if we can. Make sure to take at
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1775 most SIZE bytes, and delete the data from the runoff. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1776 if (Dynarr_length (str->runoff) > 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1777 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1778 int chunk = min (size, Dynarr_length (str->runoff));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1779 memcpy (data, Dynarr_atp (str->runoff, 0), chunk);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1780 Dynarr_delete_many (str->runoff, 0, chunk);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1781 data += chunk;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1782 size -= chunk;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1783 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1784
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1785 if (size == 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1786 break; /* No more room for data */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1787
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1788 if (str->flags & CODING_STATE_END)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1789 /* This means that on the previous iteration, we hit the EOF on
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1790 the other end. We loop once more so that mule_decode() can
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1791 output any final stuff it may be holding, or any "go back
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1792 to a sane state" escape sequences. (This latter makes sense
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1793 during encoding.) */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1794 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1795
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1796 /* Exhausted the runoff, so get some more. DATA has at least
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1797 SIZE bytes left of storage in it, so it's OK to read directly
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1798 into it. (We'll be overwriting above, after we've decoded it
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1799 into the runoff.) */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1800 read_size = Lstream_read (str->other_end, data, size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1801 if (read_size < 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1802 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1803 error_occurred = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1804 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1805 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1806 if (read_size == 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1807 /* There might be some more end data produced in the translation.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1808 See the comment above. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1809 str->flags |= CODING_STATE_END;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1810 mule_decode (stream, data, str->runoff, read_size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1811 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1812
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1813 if (data - orig_data == 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1814 return error_occurred ? -1 : 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1815 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1816 return data - orig_data;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1817 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1818
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1819 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1820 decoding_writer (Lstream *stream, CONST unsigned char *data, int size)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1821 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1822 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1823 int retval;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1824
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1825 /* Decode all our data into the runoff, and then attempt to write
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1826 it all out to the other end. Remove whatever chunk we succeeded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1827 in writing. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1828 mule_decode (stream, data, str->runoff, size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1829 retval = Lstream_write (str->other_end, Dynarr_atp (str->runoff, 0),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1830 Dynarr_length (str->runoff));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1831 if (retval > 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1832 Dynarr_delete_many (str->runoff, 0, retval);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1833 /* Do NOT return retval. The return value indicates how much
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1834 of the incoming data was written, not how many bytes were
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1835 written. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1836 return size;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1837 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1838
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1839 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1840 reset_decoding_stream (struct decoding_stream *str)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1841 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1842 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1843 if (CODING_SYSTEM_TYPE (str->codesys) == CODESYS_ISO2022)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1844 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1845 Lisp_Object coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1846 XSETCODING_SYSTEM (coding_system, str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1847 reset_iso2022 (coding_system, &str->iso2022);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1848 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1849 else if (CODING_SYSTEM_TYPE (str->codesys) == CODESYS_CCL)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1850 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1851 setup_ccl_program (&str->ccl, CODING_SYSTEM_CCL_DECODE (str->codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1852 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1853 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1854 str->flags = str->ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1855 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1856
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1857 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1858 decoding_rewinder (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1859 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1860 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1861 reset_decoding_stream (str);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1862 Dynarr_reset (str->runoff);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1863 return Lstream_rewind (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1864 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1865
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1866 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1867 decoding_seekable_p (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1868 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1869 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1870 return Lstream_seekable_p (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1871 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1872
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1873 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1874 decoding_flusher (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1875 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1876 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1877 return Lstream_flush (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1878 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1879
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1880 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1881 decoding_closer (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1882 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1883 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1884 if (stream->flags & LSTREAM_FL_WRITE)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1885 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1886 str->flags |= CODING_STATE_END;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1887 decoding_writer (stream, 0, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1888 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1889 Dynarr_free (str->runoff);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1890 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1891 if (str->iso2022.composite_chars)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1892 Dynarr_free (str->iso2022.composite_chars);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1893 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1894 return Lstream_close (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1895 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1896
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1897 Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1898 decoding_stream_coding_system (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1899 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1900 Lisp_Object coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1901 struct decoding_stream *str = DECODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1902
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1903 XSETCODING_SYSTEM (coding_system, str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1904 return subsidiary_coding_system (coding_system, str->eol_type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1905 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1906
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1907 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1908 set_decoding_stream_coding_system (Lstream *lstr, Lisp_Object codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1909 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1910 struct Lisp_Coding_System *cs = XCODING_SYSTEM (codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1911 struct decoding_stream *str = DECODING_STREAM_DATA (lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1912 str->codesys = cs;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1913 if (CODING_SYSTEM_EOL_TYPE (cs) != EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1914 str->eol_type = CODING_SYSTEM_EOL_TYPE (cs);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1915 reset_decoding_stream (str);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1916 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1917
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1918 /* WARNING WARNING WARNING WARNING!!!!! If you open up a decoding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1919 stream for writing, no automatic code detection will be performed.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1920 The reason for this is that automatic code detection requires a
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1921 seekable input. Things will also fail if you open a decoding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1922 stream for reading using a non-fully-specified coding system and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1923 a non-seekable input stream. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1924
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1925 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1926 make_decoding_stream_1 (Lstream *stream, Lisp_Object codesys,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1927 CONST char *mode)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1928 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1929 Lstream *lstr = Lstream_new (lstream_decoding, mode);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1930 struct decoding_stream *str = DECODING_STREAM_DATA (lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1931 Lisp_Object obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1932
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1933 memset (str, 0, sizeof (*str));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1934 str->other_end = stream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1935 str->runoff = (unsigned_char_dynarr *) Dynarr_new (unsigned_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1936 str->eol_type = EOL_AUTODETECT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1937 if (!strcmp (mode, "r")
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1938 && Lstream_seekable_p (stream))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1939 /* We can determine the coding system now. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1940 determine_real_coding_system (stream, &codesys, &str->eol_type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1941 set_decoding_stream_coding_system (lstr, codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1942 str->decst.eol_type = str->eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1943 str->decst.mask = ~0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1944 XSETLSTREAM (obj, lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1945 return obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1946 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1947
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1948 Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1949 make_decoding_input_stream (Lstream *stream, Lisp_Object codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1950 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1951 return make_decoding_stream_1 (stream, codesys, "r");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1952 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1953
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1954 Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1955 make_decoding_output_stream (Lstream *stream, Lisp_Object codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1956 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1957 return make_decoding_stream_1 (stream, codesys, "w");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1958 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1959
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1960 /* Note: the decode_coding_* functions all take the same
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1961 arguments as mule_decode(), which is to say some SRC data of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1962 size N, which is to be stored into dynamic array DST.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1963 DECODING is the stream within which the decoding is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1964 taking place, but no data is actually read from or
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1965 written to that stream; that is handled in decoding_reader()
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1966 or decoding_writer(). This allows the same functions to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1967 be used for both reading and writing. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1968
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1969 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1970 mule_decode (Lstream *decoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1971 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1972 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1973 struct decoding_stream *str = DECODING_STREAM_DATA (decoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1974
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1975 /* If necessary, do encoding-detection now. We do this when
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1976 we're a writing stream or a non-seekable reading stream,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1977 meaning that we can't just process the whole input,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1978 rewind, and start over. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1979
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1980 if (CODING_SYSTEM_TYPE (str->codesys) == CODESYS_AUTODETECT ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1981 str->eol_type == EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1982 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1983 Lisp_Object codesys = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1984
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1985 XSETCODING_SYSTEM (codesys, str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1986 detect_coding_type (&str->decst, src, n,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1987 CODING_SYSTEM_TYPE (str->codesys) !=
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1988 CODESYS_AUTODETECT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1989 if (CODING_SYSTEM_TYPE (str->codesys) == CODESYS_AUTODETECT &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1990 str->decst.mask != ~0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1991 /* #### This is cheesy. What we really ought to do is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1992 buffer up a certain amount of data so as to get a
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1993 less random result. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1994 codesys = coding_system_from_mask (str->decst.mask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1995 str->eol_type = str->decst.eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1996 if (XCODING_SYSTEM (codesys) != str->codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1997 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1998 /* Preserve the CODING_STATE_END flag in case it was set.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
1999 If we erase it, bad things might happen. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2000 int was_end = str->flags & CODING_STATE_END;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2001 set_decoding_stream_coding_system (decoding, codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2002 if (was_end)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2003 str->flags |= CODING_STATE_END;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2004 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2005 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2006
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2007 switch (CODING_SYSTEM_TYPE (str->codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2008 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2009 #ifdef DEBUG_XEMACS
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2010 case CODESYS_INTERNAL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2011 Dynarr_add_many (dst, src, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2012 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2013 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2014 case CODESYS_AUTODETECT:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2015 /* If we got this far and still haven't decided on the coding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2016 system, then do no conversion. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2017 case CODESYS_NO_CONVERSION:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2018 decode_coding_no_conversion (decoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2019 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2020 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2021 case CODESYS_SHIFT_JIS:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2022 decode_coding_sjis (decoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2023 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2024 case CODESYS_BIG5:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2025 decode_coding_big5 (decoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2026 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2027 case CODESYS_CCL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2028 ccl_driver (&str->ccl, src, dst, n, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2029 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2030 case CODESYS_ISO2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2031 decode_coding_iso2022 (decoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2032 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2033 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2034 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2035 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2036 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2037 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2038
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2039 DEFUN ("decode-coding-region", Fdecode_coding_region, 3, 4, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2040 Decode the text between START and END which is encoded in CODING-SYSTEM.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2041 This is useful if you've read in encoded text from a file without decoding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2042 it (e.g. you read in a JIS-formatted file but used the `binary' or
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2043 `no-conversion' coding system, so that it shows up as "^[$B!<!+^[(B").
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2044 Return length of decoded text.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2045 BUFFER defaults to the current buffer if unspecified.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2046 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2047 (start, end, coding_system, buffer))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2048 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2049 Bufpos b, e;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2050 struct buffer *buf = decode_buffer (buffer, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2051 Lisp_Object instream, lb_outstream, de_outstream, outstream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2052 Lstream *istr, *ostr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2053 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2054
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2055 get_buffer_range_char (buf, start, end, &b, &e, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2056
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2057 barf_if_buffer_read_only (buf, b, e);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2058
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2059 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2060 instream = make_lisp_buffer_input_stream (buf, b, e, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2061 lb_outstream = make_lisp_buffer_output_stream (buf, b, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2062 de_outstream = make_decoding_output_stream (XLSTREAM (lb_outstream),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2063 coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2064 outstream = make_encoding_output_stream (XLSTREAM (de_outstream),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2065 Fget_coding_system (Qbinary));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2066 istr = XLSTREAM (instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2067 ostr = XLSTREAM (outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2068 GCPRO4 (instream, lb_outstream, de_outstream, outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2069
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2070 /* The chain of streams looks like this:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2071
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2072 [BUFFER] <----- send through
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2073 ------> [ENCODE AS BINARY]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2074 ------> [DECODE AS SPECIFIED]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2075 ------> [BUFFER]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2076 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2077
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2078 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2079 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2080 char tempbuf[1024]; /* some random amount */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2081 Bufpos newpos, even_newer_pos;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2082 Bufpos oldpos = lisp_buffer_stream_startpos (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2083 int size_in_bytes = Lstream_read (istr, tempbuf, sizeof (tempbuf));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2084
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2085 if (!size_in_bytes)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2086 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2087 newpos = lisp_buffer_stream_startpos (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2088 Lstream_write (ostr, tempbuf, size_in_bytes);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2089 even_newer_pos = lisp_buffer_stream_startpos (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2090 buffer_delete_range (buf, even_newer_pos - (newpos - oldpos),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2091 even_newer_pos, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2092 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2093 Lstream_close (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2094 Lstream_close (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2095 UNGCPRO;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2096 Lstream_delete (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2097 Lstream_delete (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2098 Lstream_delete (XLSTREAM (de_outstream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2099 Lstream_delete (XLSTREAM (lb_outstream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2100 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2101 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2102
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2103
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2104 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2105 /* Converting to an external encoding ("encoding") */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2106 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2107
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2108 /* An encoding stream is an output stream. When you create the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2109 stream, you specify the coding system that governs the encoding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2110 and another stream that the resulting encoded data is to be
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2111 sent to, and then start sending data to it. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2112
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2113 #define ENCODING_STREAM_DATA(stream) LSTREAM_TYPE_DATA (stream, encoding)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2114
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2115 struct encoding_stream
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2116 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2117 /* Coding system that governs the conversion. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2118 struct Lisp_Coding_System *codesys;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2119
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2120 /* Stream that we read the encoded data from or
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2121 write the decoded data to. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2122 Lstream *other_end;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2123
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2124 /* If we are reading, then we can return only a fixed amount of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2125 data, so if the conversion resulted in too much data, we store it
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2126 here for retrieval the next time around. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2127 unsigned_char_dynarr *runoff;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2128
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2129 /* FLAGS holds flags indicating the current state of the encoding.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2130 Some of these flags are dependent on the coding system. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2131 unsigned int flags;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2132
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2133 /* CH holds a partially built-up character. Since we only deal
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2134 with one- and two-byte characters at the moment, we only use
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2135 this to store the first byte of a two-byte character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2136 unsigned int ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2137 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2138 /* Additional information used by the ISO2022 encoder. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2139 struct
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2140 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2141 /* CHARSET holds the character sets currently assigned to the G0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2142 through G3 registers. It is initialized from the array
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2143 INITIAL_CHARSET in CODESYS. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2144 Lisp_Object charset[4];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2145
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2146 /* Which registers are currently invoked into the left (GL) and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2147 right (GR) halves of the 8-bit encoding space? */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2148 int register_left, register_right;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2149
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2150 /* Whether we need to explicitly designate the charset in the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2151 G? register before using it. It is initialized from the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2152 array FORCE_CHARSET_ON_OUTPUT in CODESYS. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2153 unsigned char force_charset_on_output[4];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2154
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2155 /* Other state variables that need to be preserved across
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2156 invocations. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2157 Lisp_Object current_charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2158 int current_half;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2159 int current_char_boundary;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2160 } iso2022;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2161
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2162 /* Additional information (the state of the running CCL program)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2163 used by the CCL encoder. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2164 struct ccl_program ccl;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2165 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2166 };
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2167
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2168 static int encoding_reader (Lstream *stream, unsigned char *data, int size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2169 static int encoding_writer (Lstream *stream, CONST unsigned char *data,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2170 int size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2171 static int encoding_rewinder (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2172 static int encoding_seekable_p (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2173 static int encoding_flusher (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2174 static int encoding_closer (Lstream *stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2175
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2176 static Lisp_Object encoding_marker (Lisp_Object stream,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2177 void (*markobj) (Lisp_Object));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2178
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2179 DEFINE_LSTREAM_IMPLEMENTATION ("encoding", lstream_encoding,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2180 sizeof (struct encoding_stream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2181
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2182 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2183 encoding_marker (Lisp_Object stream, void (*markobj) (Lisp_Object))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2184 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2185 Lstream *str = ENCODING_STREAM_DATA (XLSTREAM (stream))->other_end;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2186 Lisp_Object str_obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2187
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2188 /* We do not need to mark the coding systems or charsets stored
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2189 within the stream because they are stored in a global list
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2190 and automatically marked. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2191
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2192 XSETLSTREAM (str_obj, str);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2193 (markobj) (str_obj);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2194 if (str->imp->marker)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2195 return (str->imp->marker) (str_obj, markobj);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2196 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2197 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2198 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2199
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2200 /* Read SIZE bytes of data and store it into DATA. We are a encoding stream
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2201 so we read data from the other end, encode it, and store it into DATA. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2202
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2203 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2204 encoding_reader (Lstream *stream, unsigned char *data, int size)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2205 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2206 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2207 unsigned char *orig_data = data;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2208 int read_size;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2209 int error_occurred = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2210
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2211 /* We need to interface to mule_encode(), which expects to take some
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2212 amount of data and store the result into a Dynarr. We have
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2213 mule_encode() store into str->runoff, and take data from there
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2214 as necessary. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2215
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2216 /* We loop until we have enough data, reading chunks from the other
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2217 end and encoding it. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2218 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2219 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2220 /* Take data from the runoff if we can. Make sure to take at
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2221 most SIZE bytes, and delete the data from the runoff. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2222 if (Dynarr_length (str->runoff) > 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2223 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2224 int chunk = min (size, Dynarr_length (str->runoff));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2225 memcpy (data, Dynarr_atp (str->runoff, 0), chunk);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2226 Dynarr_delete_many (str->runoff, 0, chunk);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2227 data += chunk;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2228 size -= chunk;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2229 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2230
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2231 if (size == 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2232 break; /* No more room for data */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2233
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2234 if (str->flags & CODING_STATE_END)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2235 /* This means that on the previous iteration, we hit the EOF on
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2236 the other end. We loop once more so that mule_encode() can
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2237 output any final stuff it may be holding, or any "go back
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2238 to a sane state" escape sequences. (This latter makes sense
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2239 during encoding.) */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2240 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2241
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2242 /* Exhausted the runoff, so get some more. DATA at least SIZE bytes
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2243 left of storage in it, so it's OK to read directly into it.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2244 (We'll be overwriting above, after we've encoded it into the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2245 runoff.) */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2246 read_size = Lstream_read (str->other_end, data, size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2247 if (read_size < 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2248 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2249 error_occurred = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2250 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2251 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2252 if (read_size == 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2253 /* There might be some more end data produced in the translation.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2254 See the comment above. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2255 str->flags |= CODING_STATE_END;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2256 mule_encode (stream, data, str->runoff, read_size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2257 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2258
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2259 if (data == orig_data)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2260 return error_occurred ? -1 : 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2261 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2262 return data - orig_data;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2263 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2264
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2265 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2266 encoding_writer (Lstream *stream, CONST unsigned char *data, int size)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2267 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2268 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2269 int retval;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2270
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2271 /* Encode all our data into the runoff, and then attempt to write
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2272 it all out to the other end. Remove whatever chunk we succeeded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2273 in writing. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2274 mule_encode (stream, data, str->runoff, size);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2275 retval = Lstream_write (str->other_end, Dynarr_atp (str->runoff, 0),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2276 Dynarr_length (str->runoff));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2277 if (retval > 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2278 Dynarr_delete_many (str->runoff, 0, retval);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2279 /* Do NOT return retval. The return value indicates how much
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2280 of the incoming data was written, not how many bytes were
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2281 written. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2282 return size;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2283 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2284
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2285 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2286 reset_encoding_stream (struct encoding_stream *str)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2287 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2288 switch (CODING_SYSTEM_TYPE (str->codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2289 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2290 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2291 case CODESYS_ISO2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2292 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2293 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2294
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2295 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2296 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2297 str->iso2022.charset[i] =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2298 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (str->codesys, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2299 str->iso2022.force_charset_on_output[i] =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2300 CODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT (str->codesys, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2301 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2302 str->iso2022.register_left = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2303 str->iso2022.register_right = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2304 str->iso2022.current_charset = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2305 str->iso2022.current_half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2306 str->iso2022.current_char_boundary = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2307 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2308 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2309 case CODESYS_CCL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2310 setup_ccl_program (&str->ccl, CODING_SYSTEM_CCL_ENCODE (str->codesys));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2311 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2312 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2313 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2314 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2315 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2316
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2317 str->flags = str->ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2318 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2319
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2320 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2321 encoding_rewinder (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2322 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2323 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2324 reset_encoding_stream (str);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2325 Dynarr_reset (str->runoff);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2326 return Lstream_rewind (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2327 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2328
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2329 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2330 encoding_seekable_p (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2331 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2332 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2333 return Lstream_seekable_p (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2334 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2335
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2336 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2337 encoding_flusher (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2338 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2339 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2340 return Lstream_flush (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2341 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2342
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2343 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2344 encoding_closer (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2345 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2346 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2347 if (stream->flags & LSTREAM_FL_WRITE)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2348 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2349 str->flags |= CODING_STATE_END;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2350 encoding_writer (stream, 0, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2351 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2352 Dynarr_free (str->runoff);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2353 return Lstream_close (str->other_end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2354 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2355
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2356 Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2357 encoding_stream_coding_system (Lstream *stream)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2358 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2359 Lisp_Object coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2360 struct encoding_stream *str = ENCODING_STREAM_DATA (stream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2361
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2362 XSETCODING_SYSTEM (coding_system, str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2363 return coding_system;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2364 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2365
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2366 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2367 set_encoding_stream_coding_system (Lstream *lstr, Lisp_Object codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2368 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2369 struct Lisp_Coding_System *cs = XCODING_SYSTEM (codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2370 struct encoding_stream *str = ENCODING_STREAM_DATA (lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2371 str->codesys = cs;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2372 reset_encoding_stream (str);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2373 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2374
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2375 static Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2376 make_encoding_stream_1 (Lstream *stream, Lisp_Object codesys,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2377 CONST char *mode)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2378 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2379 Lstream *lstr = Lstream_new (lstream_encoding, mode);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2380 struct encoding_stream *str = ENCODING_STREAM_DATA (lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2381 Lisp_Object obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2382
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2383 memset (str, 0, sizeof (*str));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2384 str->runoff = Dynarr_new (unsigned_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2385 str->other_end = stream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2386 set_encoding_stream_coding_system (lstr, codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2387 XSETLSTREAM (obj, lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2388 return obj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2389 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2390
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2391 Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2392 make_encoding_input_stream (Lstream *stream, Lisp_Object codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2393 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2394 return make_encoding_stream_1 (stream, codesys, "r");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2395 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2396
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2397 Lisp_Object
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2398 make_encoding_output_stream (Lstream *stream, Lisp_Object codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2399 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2400 return make_encoding_stream_1 (stream, codesys, "w");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2401 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2402
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2403 /* Convert N bytes of internally-formatted data stored in SRC to an
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2404 external format, according to the encoding stream ENCODING.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2405 Store the encoded data into DST. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2406
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2407 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2408 mule_encode (Lstream *encoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2409 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2410 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2411 struct encoding_stream *str = ENCODING_STREAM_DATA (encoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2412
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2413 switch (CODING_SYSTEM_TYPE (str->codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2414 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2415 #ifdef DEBUG_XEMACS
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2416 case CODESYS_INTERNAL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2417 Dynarr_add_many (dst, src, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2418 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2419 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2420 case CODESYS_AUTODETECT:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2421 /* If we got this far and still haven't decided on the coding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2422 system, then do no conversion. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2423 case CODESYS_NO_CONVERSION:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2424 encode_coding_no_conversion (encoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2425 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2426 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2427 case CODESYS_SHIFT_JIS:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2428 encode_coding_sjis (encoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2429 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2430 case CODESYS_BIG5:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2431 encode_coding_big5 (encoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2432 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2433 case CODESYS_CCL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2434 ccl_driver (&str->ccl, src, dst, n, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2435 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2436 case CODESYS_ISO2022:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2437 encode_coding_iso2022 (encoding, src, dst, n);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2438 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2439 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2440 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2441 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2442 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2443 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2444
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2445 DEFUN ("encode-coding-region", Fencode_coding_region, 3, 4, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2446 Encode the text between START and END using CODING-SYSTEM.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2447 This will, for example, convert Japanese characters into stuff such as
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2448 "^[$B!<!+^[(B" if you use the JIS encoding. Return length of encoded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2449 text. BUFFER defaults to the current buffer if unspecified.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2450 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2451 (start, end, coding_system, buffer))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2452 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2453 Bufpos b, e;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2454 struct buffer *buf = decode_buffer (buffer, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2455 Lisp_Object instream, lb_outstream, de_outstream, outstream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2456 Lstream *istr, *ostr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2457 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2458
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2459 get_buffer_range_char (buf, start, end, &b, &e, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2460
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2461 barf_if_buffer_read_only (buf, b, e);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2462
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2463 coding_system = Fget_coding_system (coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2464 instream = make_lisp_buffer_input_stream (buf, b, e, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2465 lb_outstream = make_lisp_buffer_output_stream (buf, b, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2466 de_outstream = make_decoding_output_stream (XLSTREAM (lb_outstream),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2467 Fget_coding_system (Qbinary));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2468 outstream = make_encoding_output_stream (XLSTREAM (de_outstream),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2469 coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2470 istr = XLSTREAM (instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2471 ostr = XLSTREAM (outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2472 GCPRO4 (instream, outstream, de_outstream, lb_outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2473 /* The chain of streams looks like this:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2474
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2475 [BUFFER] <----- send through
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2476 ------> [ENCODE AS SPECIFIED]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2477 ------> [DECODE AS BINARY]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2478 ------> [BUFFER]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2479 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2480 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2481 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2482 char tempbuf[1024]; /* some random amount */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2483 Bufpos newpos, even_newer_pos;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2484 Bufpos oldpos = lisp_buffer_stream_startpos (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2485 int size_in_bytes = Lstream_read (istr, tempbuf, sizeof (tempbuf));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2486
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2487 if (!size_in_bytes)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2488 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2489 newpos = lisp_buffer_stream_startpos (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2490 Lstream_write (ostr, tempbuf, size_in_bytes);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2491 even_newer_pos = lisp_buffer_stream_startpos (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2492 buffer_delete_range (buf, even_newer_pos - (newpos - oldpos),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2493 even_newer_pos, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2494 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2495
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2496 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2497 Charcount retlen =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2498 lisp_buffer_stream_startpos (XLSTREAM (instream)) - b;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2499 Lstream_close (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2500 Lstream_close (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2501 UNGCPRO;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2502 Lstream_delete (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2503 Lstream_delete (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2504 Lstream_delete (XLSTREAM (de_outstream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2505 Lstream_delete (XLSTREAM (lb_outstream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2506 return make_int (retlen);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2507 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2508 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2509
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2510 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2511
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2512 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2513 /* Shift-JIS methods */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2514 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2515
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2516 /* Shift-JIS is a coding system encoding three character sets: ASCII, right
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2517 half of JISX0201-Kana, and JISX0208. An ASCII character is encoded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2518 as is. A character of JISX0201-Kana (TYPE94 character set) is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2519 encoded by "position-code + 0x80". A character of JISX0208
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2520 (TYPE94x94 character set) is encoded in 2-byte but two
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2521 position-codes are divided and shifted so that it fit in the range
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2522 below.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2523
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2524 --- CODE RANGE of Shift-JIS ---
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2525 (character set) (range)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2526 ASCII 0x00 .. 0x7F
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2527 JISX0201-Kana 0xA0 .. 0xDF
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2528 JISX0208 (1st byte) 0x80 .. 0x9F and 0xE0 .. 0xEF
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2529 (2nd byte) 0x40 .. 0x7E and 0x80 .. 0xFC
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2530 -------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2531
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2532 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2533
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2534 /* Is this the first byte of a Shift-JIS two-byte char? */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2535
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2536 #define BYTE_SJIS_TWO_BYTE_1_P(c) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2537 (((c) >= 0x81 && (c) <= 0x9F) || ((c) >= 0xE0 && (c) <= 0xEF))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2538
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2539 /* Is this the second byte of a Shift-JIS two-byte char? */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2540
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2541 #define BYTE_SJIS_TWO_BYTE_2_P(c) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2542 (((c) >= 0x40 && (c) <= 0x7E) || ((c) >= 0x80 && (c) <= 0xFC))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2543
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2544 #define BYTE_SJIS_KATAKANA_P(c) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2545 ((c) >= 0xA1 && (c) <= 0xDF)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2546
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2547 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2548 detect_coding_sjis (struct detection_state *st, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2549 unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2550 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2551 int c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2552
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2553 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2554 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2555 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2556 if (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2557 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2558 if (st->shift_jis.in_second_byte)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2559 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2560 st->shift_jis.in_second_byte = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2561 if (c < 0x40)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2562 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2563 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2564 else if ((c >= 0x80 && c < 0xA0) || c >= 0xE0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2565 st->shift_jis.in_second_byte = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2566 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2567 return CODING_CATEGORY_SHIFT_JIS_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2568 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2569
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2570 /* Convert Shift-JIS data to internal format. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2571
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2572 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2573 decode_coding_sjis (Lstream *decoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2574 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2575 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2576 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2577 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2578 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2579 struct decoding_stream *str = DECODING_STREAM_DATA (decoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2580
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2581 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2582 eol_type = str->eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2583
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2584 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2585 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2586 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2587
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2588 if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2589 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2590 /* Previous character was first byte of Shift-JIS Kanji char. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2591 if (BYTE_SJIS_TWO_BYTE_2_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2592 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2593 unsigned char e1, e2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2594
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2595 Dynarr_add (dst, LEADING_BYTE_JAPANESE_JISX0208);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2596 DECODE_SJIS (ch, c, e1, e2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2597 Dynarr_add (dst, e1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2598 Dynarr_add (dst, e2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2599 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2600 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2601 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2602 DECODE_ADD_BINARY_CHAR (ch, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2603 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2604 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2605 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2606 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2607 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2608 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2609 DECODE_HANDLE_EOL_TYPE (eol_type, c, flags, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2610 if (BYTE_SJIS_TWO_BYTE_1_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2611 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2612 else if (BYTE_SJIS_KATAKANA_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2613 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2614 Dynarr_add (dst, LEADING_BYTE_KATAKANA_JISX0201);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2615 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2616 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2617 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2618 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2619 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2620 label_continue_loop:;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2621 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2622
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2623 DECODE_HANDLE_END_OF_CONVERSION (flags, ch, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2624
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2625 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2626 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2627
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2628 /* Convert internally-formatted data to Shift-JIS. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2629
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2630 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2631 encode_coding_sjis (Lstream *encoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2632 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2633 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2634 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2635 struct encoding_stream *str = ENCODING_STREAM_DATA (encoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2636 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2637 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2638
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2639 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2640 eol_type = CODING_SYSTEM_EOL_TYPE (str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2641
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2642 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2643 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2644 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2645 if (c == '\n')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2646 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2647 if (eol_type != EOL_LF && eol_type != EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2648 Dynarr_add (dst, '\r');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2649 if (eol_type != EOL_CR)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2650 Dynarr_add (dst, '\n');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2651 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2652 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2653 else if (BYTE_ASCII_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2654 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2655 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2656 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2657 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2658 else if (BUFBYTE_LEADING_BYTE_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2659 ch = (c == LEADING_BYTE_KATAKANA_JISX0201 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2660 c == LEADING_BYTE_JAPANESE_JISX0208_1978 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2661 c == LEADING_BYTE_JAPANESE_JISX0208) ? c : 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2662 else if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2663 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2664 if (ch == LEADING_BYTE_KATAKANA_JISX0201)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2665 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2666 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2667 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2668 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2669 else if (ch == LEADING_BYTE_JAPANESE_JISX0208_1978 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2670 ch == LEADING_BYTE_JAPANESE_JISX0208)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2671 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2672 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2673 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2674 unsigned char j1, j2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2675 ENCODE_SJIS (ch, c, j1, j2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2676 Dynarr_add (dst, j1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2677 Dynarr_add (dst, j2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2678 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2679 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2680 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2681 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2682
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2683 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2684 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2685
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2686 DEFUN ("decode-shift-jis-char", Fdecode_shift_jis_char, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2687 Decode a JISX0208 character of Shift-JIS coding-system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2688 CODE is the character code in Shift-JIS as a cons of type bytes.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2689 Return the corresponding character.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2690 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2691 (code))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2692 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2693 unsigned char c1, c2, s1, s2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2694
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2695 CHECK_CONS (code);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2696 CHECK_INT (XCAR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2697 CHECK_INT (XCDR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2698 s1 = XINT (XCAR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2699 s2 = XINT (XCDR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2700 if (BYTE_SJIS_TWO_BYTE_1_P (s1) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2701 BYTE_SJIS_TWO_BYTE_2_P (s2))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2702 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2703 DECODE_SJIS (s1, s2, c1, c2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2704 return make_char (MAKE_CHAR (Vcharset_japanese_jisx0208,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2705 c1 & 0x7F, c2 & 0x7F));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2706 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2707 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2708 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2709 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2710
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2711 DEFUN ("encode-shift-jis-char", Fencode_shift_jis_char, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2712 Encode a JISX0208 character CHAR to SHIFT-JIS coding-system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2713 Return the corresponding character code in SHIFT-JIS as a cons of two bytes.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2714 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2715 (ch))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2716 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2717 Lisp_Object charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2718 int c1, c2, s1, s2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2719
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2720 CHECK_CHAR_COERCE_INT (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2721 BREAKUP_CHAR (XCHAR (ch), charset, c1, c2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2722 if (EQ (charset, Vcharset_japanese_jisx0208))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2723 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2724 ENCODE_SJIS (c1 | 0x80, c2 | 0x80, s1, s2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2725 return Fcons (make_int (s1), make_int (s2));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2726 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2727 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2728 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2729 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2730
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2731
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2732 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2733 /* Big5 methods */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2734 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2735
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2736 /* BIG5 is a coding system encoding two character sets: ASCII and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2737 Big5. An ASCII character is encoded as is. Big5 is a two-byte
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2738 character set and is encoded in two-byte.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2739
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2740 --- CODE RANGE of BIG5 ---
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2741 (character set) (range)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2742 ASCII 0x00 .. 0x7F
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2743 Big5 (1st byte) 0xA1 .. 0xFE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2744 (2nd byte) 0x40 .. 0x7E and 0xA1 .. 0xFE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2745 --------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2746
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2747 Since the number of characters in Big5 is larger than maximum
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2748 characters in Emacs' charset (96x96), it can't be handled as one
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2749 charset. So, in Emacs, Big5 is devided into two: `charset-big5-1'
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2750 and `charset-big5-2'. Both <type>s are TYPE94x94. The former
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2751 contains frequently used characters and the latter contains less
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2752 frequently used characters. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2753
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2754 #define BYTE_BIG5_TWO_BYTE_1_P(c) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2755 ((c) >= 0xA1 && (c) <= 0xFE)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2756
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2757 /* Is this the second byte of a Shift-JIS two-byte char? */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2758
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2759 #define BYTE_BIG5_TWO_BYTE_2_P(c) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2760 (((c) >= 0x40 && (c) <= 0x7E) || ((c) >= 0xA1 && (c) <= 0xFE))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2761
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2762 /* Number of Big5 characters which have the same code in 1st byte. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2763
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2764 #define BIG5_SAME_ROW (0xFF - 0xA1 + 0x7F - 0x40)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2765
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2766 /* Code conversion macros. These are macros because they are used in
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2767 inner loops during code conversion.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2768
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2769 Note that temporary variables in macros introduce the classic
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2770 dynamic-scoping problems with variable names. We use capital-
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2771 lettered variables in the assumption that XEmacs does not use
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2772 capital letters in variables except in a very formalized way
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2773 (e.g. Qstring). */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2774
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2775 /* Convert Big5 code (b1, b2) into its internal string representation
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2776 (lb, c1, c2). */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2777
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2778 /* There is a much simpler way to split the Big5 charset into two.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2779 For the moment I'm going to leave the algorithm as-is because it
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2780 claims to separate out the most-used characters into a single
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2781 charset, which perhaps will lead to optimizations in various
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2782 places.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2783
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2784 The way the algorithm works is something like this:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2785
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2786 Big5 can be viewed as a 94x157 charset, where the row is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2787 encoded into the bytes 0xA1 .. 0xFE and the column is encoded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2788 into the bytes 0x40 .. 0x7E and 0xA1 .. 0xFE. As for frequency,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2789 the split between low and high column numbers is apparently
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2790 meaningless; ascending rows produce less and less frequent chars.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2791 Therefore, we assign the lower half of rows (0xA1 .. 0xC8) to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2792 the first charset, and the upper half (0xC9 .. 0xFE) to the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2793 second. To do the conversion, we convert the character into
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2794 a single number where 0 .. 156 is the first row, 157 .. 313
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2795 is the second, etc. That way, the characters are ordered by
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2796 decreasing frequency. Then we just chop the space in two
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2797 and coerce the result into a 94x94 space.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2798 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2799
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2800 #define DECODE_BIG5(b1, b2, lb, c1, c2) do \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2801 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2802 int B1 = b1, B2 = b2; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2803 unsigned int I \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2804 = (B1 - 0xA1) * BIG5_SAME_ROW + B2 - (B2 < 0x7F ? 0x40 : 0x62); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2805 \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2806 if (B1 < 0xC9) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2807 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2808 lb = LEADING_BYTE_CHINESE_BIG5_1; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2809 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2810 else \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2811 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2812 lb = LEADING_BYTE_CHINESE_BIG5_2; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2813 I -= (BIG5_SAME_ROW) * (0xC9 - 0xA1); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2814 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2815 c1 = I / (0xFF - 0xA1) + 0xA1; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2816 c2 = I % (0xFF - 0xA1) + 0xA1; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2817 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2818
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2819 /* Convert the internal string representation of a Big5 character
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2820 (lb, c1, c2) into Big5 code (b1, b2). */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2821
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2822 #define ENCODE_BIG5(lb, c1, c2, b1, b2) do \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2823 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2824 unsigned int I = ((c1) - 0xA1) * (0xFF - 0xA1) + ((c2) - 0xA1); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2825 \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2826 if (lb == LEADING_BYTE_CHINESE_BIG5_2) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2827 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2828 I += BIG5_SAME_ROW * (0xC9 - 0xA1); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2829 } \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2830 b1 = I / BIG5_SAME_ROW + 0xA1; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2831 b2 = I % BIG5_SAME_ROW; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2832 b2 += b2 < 0x3F ? 0x40 : 0x62; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2833 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2834
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2835 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2836 detect_coding_big5 (struct detection_state *st, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2837 unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2838 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2839 int c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2840
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2841 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2842 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2843 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2844 if (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2845 (c >= 0x80 && c <= 0xA0))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2846 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2847 if (st->big5.in_second_byte)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2848 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2849 st->big5.in_second_byte = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2850 if (c < 0x40 || (c >= 0x80 && c <= 0xA0))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2851 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2852 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2853 else if (c >= 0xA1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2854 st->big5.in_second_byte = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2855 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2856 return CODING_CATEGORY_BIG5_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2857 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2858
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2859 /* Convert Big5 data to internal format. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2860
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2861 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2862 decode_coding_big5 (Lstream *decoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2863 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2864 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2865 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2866 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2867 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2868 struct decoding_stream *str = DECODING_STREAM_DATA (decoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2869
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2870 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2871 eol_type = str->eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2872
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2873 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2874 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2875 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2876 if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2877 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2878 /* Previous character was first byte of Big5 char. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2879 if (BYTE_BIG5_TWO_BYTE_2_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2880 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2881 unsigned char b1, b2, b3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2882 DECODE_BIG5 (ch, c, b1, b2, b3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2883 Dynarr_add (dst, b1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2884 Dynarr_add (dst, b2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2885 Dynarr_add (dst, b3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2886 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2887 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2888 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2889 DECODE_ADD_BINARY_CHAR (ch, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2890 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2891 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2892 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2893 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2894 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2895 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2896 DECODE_HANDLE_EOL_TYPE (eol_type, c, flags, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2897 if (BYTE_BIG5_TWO_BYTE_1_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2898 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2899 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2900 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2901 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2902 label_continue_loop:;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2903 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2904
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2905 DECODE_HANDLE_END_OF_CONVERSION (flags, ch, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2906
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2907 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2908 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2909
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2910 /* Convert internally-formatted data to Big5. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2911
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2912 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2913 encode_coding_big5 (Lstream *encoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2914 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2915 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2916 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2917 struct encoding_stream *str = ENCODING_STREAM_DATA (encoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2918 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2919 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2920
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2921 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2922 eol_type = CODING_SYSTEM_EOL_TYPE (str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2923
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2924 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2925 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2926 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2927 if (c == '\n')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2928 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2929 if (eol_type != EOL_LF && eol_type != EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2930 Dynarr_add (dst, '\r');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2931 if (eol_type != EOL_CR)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2932 Dynarr_add (dst, '\n');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2933 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2934 else if (BYTE_ASCII_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2935 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2936 /* ASCII. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2937 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2938 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2939 else if (BUFBYTE_LEADING_BYTE_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2940 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2941 if (c == LEADING_BYTE_CHINESE_BIG5_1 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2942 c == LEADING_BYTE_CHINESE_BIG5_2)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2943 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2944 /* A recognized leading byte. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2945 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2946 continue; /* not done with this character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2947 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2948 /* otherwise just ignore this character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2949 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2950 else if (ch == LEADING_BYTE_CHINESE_BIG5_1 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2951 ch == LEADING_BYTE_CHINESE_BIG5_2)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2952 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2953 /* Previous char was a recognized leading byte. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2954 ch = (ch << 8) | c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2955 continue; /* not done with this character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2956 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2957 else if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2958 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2959 /* Encountering second byte of a Big5 character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2960 unsigned char b1, b2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2961
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2962 ENCODE_BIG5 (ch >> 8, ch & 0xFF, c, b1, b2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2963 Dynarr_add (dst, b1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2964 Dynarr_add (dst, b2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2965 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2966
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2967 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2968 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2969
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2970 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2971 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2972
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2973
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2974 DEFUN ("decode-big5-char", Fdecode_big5_char, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2975 Decode a Big5 character CODE of BIG5 coding-system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2976 CODE is the character code in BIG5, a cons of two integers.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2977 Return the corresponding character.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2978 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2979 (code))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2980 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2981 unsigned char c1, c2, b1, b2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2982
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2983 CHECK_CONS (code);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2984 CHECK_INT (XCAR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2985 CHECK_INT (XCDR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2986 b1 = XINT (XCAR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2987 b2 = XINT (XCDR (code));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2988 if (BYTE_BIG5_TWO_BYTE_1_P (b1) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2989 BYTE_BIG5_TWO_BYTE_2_P (b2))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2990 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2991 int leading_byte;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2992 Lisp_Object charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2993 DECODE_BIG5 (b1, b2, leading_byte, c1, c2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2994 charset = CHARSET_BY_LEADING_BYTE (leading_byte);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2995 return make_char (MAKE_CHAR (charset, c1 & 0x7F, c2 & 0x7F));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2996 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2997 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2998 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
2999 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3000
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3001 DEFUN ("encode-big5-char", Fencode_big5_char, 1, 1, 0, /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3002 Encode the Big5 character CH to BIG5 coding-system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3003 Return the corresponding character code in Big5.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3004 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3005 (ch))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3006 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3007 Lisp_Object charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3008 int c1, c2, b1, b2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3009
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3010 CHECK_CHAR_COERCE_INT (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3011 BREAKUP_CHAR (XCHAR (ch), charset, c1, c2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3012 if (EQ (charset, Vcharset_chinese_big5_1) ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3013 EQ (charset, Vcharset_chinese_big5_2))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3014 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3015 ENCODE_BIG5 (XCHARSET_LEADING_BYTE (charset), c1 | 0x80, c2 | 0x80,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3016 b1, b2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3017 return Fcons (make_int (b1), make_int (b2));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3018 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3019 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3020 return Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3021 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3022
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3023
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3024 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3025 /* ISO2022 methods */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3026 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3027
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3028 /* The following note describes the coding system ISO2022 briefly.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3029 Since the intention of this note is to help understanding of the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3030 programs in this file, some parts are NOT ACCURATE or OVERLY
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3031 SIMPLIFIED. For thorough understanding, please refer to the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3032 original document of ISO2022.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3033
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3034 ISO2022 provides many mechanisms to encode several character sets
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3035 in 7-bit and 8-bit environments. If one chooses 7-bit environment,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3036 all text is encoded by codes of less than 128. This may make the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3037 encoded text a little bit longer, but the text get more stability
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3038 to pass through several gateways (some of them strip off MSB).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3039
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3040 There are two kind of character sets: control character set and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3041 graphic character set. The former contains control characters such
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3042 as `newline' and `escape' to provide control functions (control
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3043 functions are provided also by escape sequence). The latter
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3044 contains graphic characters such as 'A' and '-'. Emacs recognizes
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3045 two control character sets and many graphic character sets.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3046
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3047 Graphic character sets are classified into one of four types,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3048 according to the dimension and number of characters in the set:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3049 TYPE94, TYPE96, TYPE94x94, and TYPE96x96. In addition, each
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3050 character set is assigned an identification byte, unique for each
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3051 type, called "final character" (denoted as <F> hereafter). The <F>
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3052 of each character set is decided by ECMA(*) when it is registered
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3053 in ISO. Code range of <F> is 0x30..0x7F (0x30..0x3F are for
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3054 private use only).
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3055
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3056 Note (*): ECMA = European Computer Manufacturers Association
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3057
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3058 Here are examples of graphic character set [NAME(<F>)]:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3059 o TYPE94 -- ASCII('B'), right-half-of-JISX0201('I'), ...
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3060 o TYPE96 -- right-half-of-ISO8859-1('A'), ...
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3061 o TYPE94x94 -- GB2312('A'), JISX0208('B'), ...
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3062 o TYPE96x96 -- none for the moment
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3063
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3064 A code area (1byte=8bits) is divided into 4 areas, C0, GL, C1, and GR.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3065 C0 [0x00..0x1F] -- control character plane 0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3066 GL [0x20..0x7F] -- graphic character plane 0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3067 C1 [0x80..0x9F] -- control character plane 1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3068 GR [0xA0..0xFF] -- graphic character plane 1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3069
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3070 A control character set is directly designated and invoked to C0 or
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3071 C1 by an escape sequence. The most common case is that:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3072 - ISO646's control character set is designated/invoked to C0, and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3073 - ISO6429's control character set is designated/invoked to C1,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3074 and usually these designations/invocations are omitted in encoded
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3075 text. In a 7-bit environment, only C0 can be used, and a control
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3076 character for C1 is encoded by an appropriate escape sequence to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3077 fit into the environment. All control characters for C1 are
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3078 defined to have corresponding escape sequences.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3079
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3080 A graphic character set is at first designated to one of four
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3081 graphic registers (G0 through G3), then these graphic registers are
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3082 invoked to GL or GR. These designations and invocations can be
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3083 done independently. The most common case is that G0 is invoked to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3084 GL, G1 is invoked to GR, and ASCII is designated to G0. Usually
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3085 these invocations and designations are omitted in encoded text.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3086 In a 7-bit environment, only GL can be used.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3087
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3088 When a graphic character set of TYPE94 or TYPE94x94 is invoked to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3089 GL, codes 0x20 and 0x7F of the GL area work as control characters
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3090 SPACE and DEL respectively, and code 0xA0 and 0xFF of GR area
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3091 should not be used.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3092
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3093 There are two ways of invocation: locking-shift and single-shift.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3094 With locking-shift, the invocation lasts until the next different
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3095 invocation, whereas with single-shift, the invocation works only
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3096 for the following character and doesn't affect locking-shift.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3097 Invocations are done by the following control characters or escape
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3098 sequences.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3099
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3100 ----------------------------------------------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3101 abbrev function cntrl escape seq description
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3102 ----------------------------------------------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3103 SI/LS0 (shift-in) 0x0F none invoke G0 into GL
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3104 SO/LS1 (shift-out) 0x0E none invoke G1 into GL
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3105 LS1R (locking-shift-1 right) none ESC '~' invoke G1 into GR
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3106 LS2 (locking-shift-2) none ESC 'n' invoke G2 into GL
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3107 LS2R (locking-shift-2 right) none ESC '}' invoke G2 into GR
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3108 LS3 (locking-shift-3) none ESC 'o' invoke G3 into GL
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3109 LS3R (locking-shift 3 right) none ESC '|' invoke G3 into GR
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3110 SS2 (single-shift-2) 0x8E ESC 'N' invoke G2 for one char
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3111 SS3 (single-shift-3) 0x8F ESC 'O' invoke G3 for one char
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3112 ----------------------------------------------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3113 The first four are for locking-shift. Control characters for these
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3114 functions are defined by macros ISO_CODE_XXX in `coding.h'.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3115
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3116 Designations are done by the following escape sequences.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3117 ----------------------------------------------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3118 escape sequence description
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3119 ----------------------------------------------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3120 ESC '(' <F> designate TYPE94<F> to G0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3121 ESC ')' <F> designate TYPE94<F> to G1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3122 ESC '*' <F> designate TYPE94<F> to G2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3123 ESC '+' <F> designate TYPE94<F> to G3
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3124 ESC ',' <F> designate TYPE96<F> to G0 (*)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3125 ESC '-' <F> designate TYPE96<F> to G1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3126 ESC '.' <F> designate TYPE96<F> to G2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3127 ESC '/' <F> designate TYPE96<F> to G3
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3128 ESC '$' '(' <F> designate TYPE94x94<F> to G0 (**)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3129 ESC '$' ')' <F> designate TYPE94x94<F> to G1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3130 ESC '$' '*' <F> designate TYPE94x94<F> to G2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3131 ESC '$' '+' <F> designate TYPE94x94<F> to G3
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3132 ESC '$' ',' <F> designate TYPE96x96<F> to G0 (*)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3133 ESC '$' '-' <F> designate TYPE96x96<F> to G1
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3134 ESC '$' '.' <F> designate TYPE96x96<F> to G2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3135 ESC '$' '/' <F> designate TYPE96x96<F> to G3
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3136 ----------------------------------------------------------------------
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3137 In this list, "TYPE94<F>" means a graphic character set of type TYPE94
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3138 and final character <F>, and etc.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3139
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3140 Note (*): Although these designations are not allowed in ISO2022,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3141 Emacs accepts them on decoding, and produces them on encoding
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3142 TYPE96 or TYPE96x96 character set in a coding system which is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3143 characterized as 7-bit environment, non-locking-shift, and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3144 non-single-shift.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3145
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3146 Note (**): If <F> is '@', 'A', or 'B', the intermediate character
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3147 '(' can be omitted. We call this as "short-form" here after.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3148
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3149 Now you may notice that there are a lot of ways for encoding the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3150 same multilingual text in ISO2022. Actually, there exist many
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3151 coding systems such as Compound Text (used in X's inter client
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3152 communication, ISO-2022-JP (used in Japanese internet), ISO-2022-KR
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3153 (used in Korean internet), EUC (Extended UNIX Code, used in Asian
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3154 localized platforms), and all of these are variants of ISO2022.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3155
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3156 In addition to the above, Emacs handles two more kinds of escape
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3157 sequences: ISO6429's direction specification and Emacs' private
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3158 sequence for specifying character composition.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3159
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3160 ISO6429's direction specification takes the following format:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3161 o CSI ']' -- end of the current direction
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3162 o CSI '0' ']' -- end of the current direction
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3163 o CSI '1' ']' -- start of left-to-right text
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3164 o CSI '2' ']' -- start of right-to-left text
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3165 The control character CSI (0x9B: control sequence introducer) is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3166 abbreviated to the escape sequence ESC '[' in 7-bit environment.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3167
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3168 Character composition specification takes the following format:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3169 o ESC '0' -- start character composition
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3170 o ESC '1' -- end character composition
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3171 Since these are not standard escape sequences of any ISO, the use
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3172 of them for these meanings is restricted to Emacs only. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3173
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3174 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3175 reset_iso2022 (Lisp_Object coding_system, struct iso2022_decoder *iso)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3176 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3177 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3178
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3179 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3180 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3181 if (!NILP (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3182 iso->charset[i] =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3183 XCODING_SYSTEM_ISO2022_INITIAL_CHARSET (coding_system, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3184 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3185 iso->charset[i] = Qt;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3186 iso->invalid_designated[i] = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3187 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3188 iso->esc = ISO_ESC_NOTHING;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3189 iso->esc_bytes_index = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3190 iso->register_left = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3191 iso->register_right = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3192 iso->switched_dir_and_no_valid_charset_yet = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3193 iso->invalid_switch_dir = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3194 iso->output_direction_sequence = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3195 iso->output_literally = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3196 if (iso->composite_chars)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3197 Dynarr_reset (iso->composite_chars);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3198 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3199
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3200 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3201 fit_to_be_escape_quoted (unsigned char c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3202 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3203 switch (c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3204 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3205 case ISO_CODE_ESC:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3206 case ISO_CODE_CSI:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3207 case ISO_CODE_SS2:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3208 case ISO_CODE_SS3:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3209 case ISO_CODE_SO:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3210 case ISO_CODE_SI:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3211 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3212
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3213 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3214 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3215 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3216 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3217
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3218 /* Parse one byte of an ISO2022 escape sequence.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3219 If the result is an invalid escape sequence, return 0 and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3220 do not change anything in STR. Otherwise, if the result is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3221 an incomplete escape sequence, update ISO2022.ESC and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3222 ISO2022.ESC_BYTES and return -1. Otherwise, update
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3223 all the state variables (but not ISO2022.ESC_BYTES) and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3224 return 1.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3225
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3226 If CHECK_INVALID_CHARSETS is non-zero, check for designation
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3227 or invocation of an invalid character set and treat that as
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3228 an unrecognized escape sequence. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3229
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3230 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3231 parse_iso2022_esc (Lisp_Object codesys, struct iso2022_decoder *iso,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3232 unsigned char c, unsigned int *flags,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3233 int check_invalid_charsets)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3234 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3235 /* (1) If we're at the end of a designation sequence, CS is the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3236 charset being designated and REG is the register to designate
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3237 it to.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3238
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3239 (2) If we're at the end of a locking-shift sequence, REG is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3240 the register to invoke and HALF (0 == left, 1 == right) is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3241 the half to invoke it into.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3242
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3243 (3) If we're at the end of a single-shift sequence, REG is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3244 the register to invoke. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3245 Lisp_Object cs = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3246 int reg, half;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3247
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3248 /* NOTE: This code does goto's all over the fucking place.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3249 The reason for this is that we're basically implementing
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3250 a state machine here, and hierarchical languages like C
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3251 don't really provide a clean way of doing this. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3252
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3253 if (! (*flags & CODING_STATE_ESCAPE))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3254 /* At beginning of escape sequence; we need to reset our
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3255 escape-state variables. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3256 iso->esc = ISO_ESC_NOTHING;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3257
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3258 iso->output_literally = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3259 iso->output_direction_sequence = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3260
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3261 switch (iso->esc)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3262 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3263 case ISO_ESC_NOTHING:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3264 iso->esc_bytes_index = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3265 switch (c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3266 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3267 case ISO_CODE_ESC: /* Start escape sequence */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3268 *flags |= CODING_STATE_ESCAPE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3269 iso->esc = ISO_ESC;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3270 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3271
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3272 case ISO_CODE_CSI: /* ISO6429 (specifying directionality) */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3273 *flags |= CODING_STATE_ESCAPE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3274 iso->esc = ISO_ESC_5_11;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3275 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3276
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3277 case ISO_CODE_SO: /* locking shift 1 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3278 reg = 1; half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3279 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3280 case ISO_CODE_SI: /* locking shift 0 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3281 reg = 0; half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3282 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3283
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3284 case ISO_CODE_SS2: /* single shift */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3285 reg = 2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3286 goto single_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3287 case ISO_CODE_SS3: /* single shift */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3288 reg = 3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3289 goto single_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3290
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3291 default: /* Other control characters */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3292 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3293 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3294
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3295 case ISO_ESC:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3296 switch (c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3297 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3298 /**** single shift ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3299
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3300 case 'N': /* single shift 2 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3301 reg = 2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3302 goto single_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3303 case 'O': /* single shift 3 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3304 reg = 3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3305 goto single_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3306
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3307 /**** locking shift ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3308
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3309 case '~': /* locking shift 1 right */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3310 reg = 1; half = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3311 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3312 case 'n': /* locking shift 2 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3313 reg = 2; half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3314 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3315 case '}': /* locking shift 2 right */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3316 reg = 2; half = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3317 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3318 case 'o': /* locking shift 3 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3319 reg = 3; half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3320 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3321 case '|': /* locking shift 3 right */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3322 reg = 3; half = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3323 goto locking_shift;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3324
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3325 /**** composite ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3326
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3327 case '0':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3328 iso->esc = ISO_ESC_START_COMPOSITE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3329 *flags = (*flags & CODING_STATE_ISO2022_LOCK) |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3330 CODING_STATE_COMPOSITE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3331 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3332
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3333 case '1':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3334 iso->esc = ISO_ESC_END_COMPOSITE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3335 *flags = (*flags & CODING_STATE_ISO2022_LOCK) &
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3336 ~CODING_STATE_COMPOSITE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3337 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3338
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3339 /**** directionality ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3340
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3341 case '[':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3342 iso->esc = ISO_ESC_5_11;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3343 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3344
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3345 /**** designation ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3346
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3347 case '$': /* multibyte charset prefix */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3348 iso->esc = ISO_ESC_2_4;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3349 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3350
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3351 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3352 if (0x28 <= c && c <= 0x2F)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3353 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3354 iso->esc = (enum iso_esc_flag) (c - 0x28 + ISO_ESC_2_8);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3355 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3356 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3357
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3358 /* This function is called with CODESYS equal to nil when
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3359 doing coding-system detection. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3360 if (!NILP (codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3361 && XCODING_SYSTEM_ISO2022_ESCAPE_QUOTED (codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3362 && fit_to_be_escape_quoted (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3363 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3364 iso->esc = ISO_ESC_LITERAL;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3365 *flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3366 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3367 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3368
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3369 /* bzzzt! */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3370 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3371 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3372
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3373
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3374
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3375 /**** directionality ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3376
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3377 case ISO_ESC_5_11: /* ISO6429 direction control */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3378 if (c == ']')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3379 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3380 *flags &= (CODING_STATE_ISO2022_LOCK & ~CODING_STATE_R2L);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3381 goto directionality;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3382 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3383 if (c == '0') iso->esc = ISO_ESC_5_11_0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3384 else if (c == '1') iso->esc = ISO_ESC_5_11_1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3385 else if (c == '2') iso->esc = ISO_ESC_5_11_2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3386 else return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3387 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3388
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3389 case ISO_ESC_5_11_0:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3390 if (c == ']')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3391 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3392 *flags &= (CODING_STATE_ISO2022_LOCK & ~CODING_STATE_R2L);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3393 goto directionality;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3394 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3395 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3396
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3397 case ISO_ESC_5_11_1:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3398 if (c == ']')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3399 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3400 *flags = (CODING_STATE_ISO2022_LOCK & ~CODING_STATE_R2L);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3401 goto directionality;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3402 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3403 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3404
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3405 case ISO_ESC_5_11_2:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3406 if (c == ']')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3407 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3408 *flags = (*flags & CODING_STATE_ISO2022_LOCK) | CODING_STATE_R2L;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3409 goto directionality;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3410 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3411 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3412
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3413 directionality:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3414 iso->esc = ISO_ESC_DIRECTIONALITY;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3415 /* Various junk here to attempt to preserve the direction sequences
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3416 literally in the text if they would otherwise be swallowed due
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3417 to invalid designations that don't show up as actual charset
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3418 changes in the text. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3419 if (iso->invalid_switch_dir)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3420 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3421 /* We already inserted a direction switch literally into the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3422 text. We assume (#### this may not be right) that the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3423 next direction switch is the one going the other way,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3424 and we need to output that literally as well. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3425 iso->output_literally = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3426 iso->invalid_switch_dir = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3427 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3428 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3429 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3430 int jj;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3431
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3432 /* If we are in the thrall of an invalid designation,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3433 then stick the directionality sequence literally into the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3434 output stream so it ends up in the original text again. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3435 for (jj = 0; jj < 4; jj++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3436 if (iso->invalid_designated[jj])
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3437 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3438 if (jj < 4)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3439 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3440 iso->output_literally = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3441 iso->invalid_switch_dir = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3442 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3443 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3444 /* Indicate that we haven't yet seen a valid designation,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3445 so that if a switch-dir is directly followed by an
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3446 invalid designation, both get inserted literally. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3447 iso->switched_dir_and_no_valid_charset_yet = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3448 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3449 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3450
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3451
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3452 /**** designation ****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3453
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3454 case ISO_ESC_2_4:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3455 if (0x28 <= c && c <= 0x2F)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3456 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3457 iso->esc = (enum iso_esc_flag) (c - 0x28 + ISO_ESC_2_4_8);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3458 goto not_done;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3459 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3460 if (0x40 <= c && c <= 0x42)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3461 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3462 cs = CHARSET_BY_ATTRIBUTES (CHARSET_TYPE_94X94, c,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3463 *flags & CODING_STATE_R2L ?
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3464 CHARSET_RIGHT_TO_LEFT :
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3465 CHARSET_LEFT_TO_RIGHT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3466 reg = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3467 goto designated;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3468 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3469 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3470
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3471 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3472 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3473 int type =-1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3474
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3475 if (c < '0' || c > '~')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3476 return 0; /* bad final byte */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3477
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3478 if (iso->esc >= ISO_ESC_2_8 &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3479 iso->esc <= ISO_ESC_2_15)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3480 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3481 type = ((iso->esc >= ISO_ESC_2_12) ?
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3482 CHARSET_TYPE_96 : CHARSET_TYPE_94);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3483 reg = (iso->esc - ISO_ESC_2_8) & 3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3484 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3485 else if (iso->esc >= ISO_ESC_2_4_8 &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3486 iso->esc <= ISO_ESC_2_4_15)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3487 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3488 type = ((iso->esc >= ISO_ESC_2_4_12) ?
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3489 CHARSET_TYPE_96X96 : CHARSET_TYPE_94X94);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3490 reg = (iso->esc - ISO_ESC_2_4_8) & 3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3491 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3492 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3493 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3494 /* Can this ever be reached? -slb */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3495 abort();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3496 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3497
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3498 cs = CHARSET_BY_ATTRIBUTES (type, c,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3499 *flags & CODING_STATE_R2L ?
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3500 CHARSET_RIGHT_TO_LEFT :
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3501 CHARSET_LEFT_TO_RIGHT);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3502 goto designated;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3503 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3504 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3505
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3506 not_done:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3507 iso->esc_bytes[iso->esc_bytes_index++] = (unsigned char) c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3508 return -1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3509
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3510 single_shift:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3511 if (check_invalid_charsets && !CHARSETP (iso->charset[reg]))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3512 /* can't invoke something that ain't there. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3513 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3514 iso->esc = ISO_ESC_SINGLE_SHIFT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3515 *flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3516 if (reg == 2)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3517 *flags |= CODING_STATE_SS2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3518 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3519 *flags |= CODING_STATE_SS3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3520 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3521
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3522 locking_shift:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3523 if (check_invalid_charsets &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3524 !CHARSETP (iso->charset[reg]))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3525 /* can't invoke something that ain't there. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3526 return 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3527 if (half)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3528 iso->register_right = reg;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3529 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3530 iso->register_left = reg;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3531 *flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3532 iso->esc = ISO_ESC_LOCKING_SHIFT;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3533 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3534
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3535 designated:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3536 if (NILP (cs) && check_invalid_charsets)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3537 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3538 iso->invalid_designated[reg] = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3539 iso->charset[reg] = Vcharset_ascii;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3540 iso->esc = ISO_ESC_DESIGNATE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3541 *flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3542 iso->output_literally = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3543 if (iso->switched_dir_and_no_valid_charset_yet)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3544 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3545 /* We encountered a switch-direction followed by an
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3546 invalid designation. Ensure that the switch-direction
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3547 gets outputted; otherwise it will probably get eaten
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3548 when the text is written out again. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3549 iso->switched_dir_and_no_valid_charset_yet = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3550 iso->output_direction_sequence = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3551 /* And make sure that the switch-dir going the other
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3552 way gets outputted, as well. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3553 iso->invalid_switch_dir = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3554 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3555 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3556 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3557 /* This function is called with CODESYS equal to nil when
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3558 doing coding-system detection. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3559 if (!NILP (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3560 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3561 charset_conversion_spec_dynarr *dyn =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3562 XCODING_SYSTEM (codesys)->iso2022.input_conv;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3563
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3564 if (dyn)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3565 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3566 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3567
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3568 for (i = 0; i < Dynarr_length (dyn); i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3569 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3570 struct charset_conversion_spec *spec = Dynarr_atp (dyn, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3571 if (EQ (cs, spec->from_charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3572 cs = spec->to_charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3573 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3574 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3575 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3576
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3577 iso->charset[reg] = cs;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3578 iso->esc = ISO_ESC_DESIGNATE;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3579 *flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3580 if (iso->invalid_designated[reg])
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3581 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3582 iso->invalid_designated[reg] = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3583 iso->output_literally = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3584 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3585 if (iso->switched_dir_and_no_valid_charset_yet)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3586 iso->switched_dir_and_no_valid_charset_yet = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3587 return 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3588 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3589
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3590 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3591 detect_coding_iso2022 (struct detection_state *st, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3592 unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3593 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3594 int c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3595 int mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3596
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3597 /* #### There are serious deficiencies in the recognition mechanism
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3598 here. This needs to be much smarter if it's going to cut it. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3599
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3600 if (!st->iso2022.initted)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3601 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3602 reset_iso2022 (Qnil, &st->iso2022.iso);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3603 st->iso2022.mask = (CODING_CATEGORY_ISO_7_MASK |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3604 CODING_CATEGORY_ISO_8_DESIGNATE_MASK |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3605 CODING_CATEGORY_ISO_8_1_MASK |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3606 CODING_CATEGORY_ISO_8_2_MASK |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3607 CODING_CATEGORY_ISO_LOCK_SHIFT_MASK);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3608 st->iso2022.flags = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3609 st->iso2022.high_byte_count = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3610 st->iso2022.saw_single_shift = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3611 st->iso2022.initted = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3612 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3613
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3614 mask = st->iso2022.mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3615
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3616 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3617 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3618 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3619 if (c >= 0xA0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3620 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3621 mask &= ~CODING_CATEGORY_ISO_7_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3622 st->iso2022.high_byte_count++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3623 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3624 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3625 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3626 if (st->iso2022.high_byte_count && !st->iso2022.saw_single_shift)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3627 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3628 if (st->iso2022.high_byte_count & 1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3629 /* odd number of high bytes; assume not iso-8-2 */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3630 mask &= ~CODING_CATEGORY_ISO_8_2_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3631 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3632 st->iso2022.high_byte_count = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3633 st->iso2022.saw_single_shift = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3634 if (c > 0x80)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3635 mask &= ~CODING_CATEGORY_ISO_7_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3636 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3637 if (!(st->iso2022.flags & CODING_STATE_ESCAPE)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3638 && (BYTE_C0_P (c) || BYTE_C1_P (c)))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3639 { /* control chars */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3640 switch (c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3641 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3642 /* Allow and ignore control characters that you might
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3643 reasonably see in a text file */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3644 case '\r':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3645 case '\n':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3646 case '\t':
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3647 case 7: /* bell */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3648 case 8: /* backspace */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3649 case 11: /* vertical tab */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3650 case 12: /* form feed */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3651 case 26: /* MS-DOS C-z junk */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3652 case 31: /* '^_' -- for info */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3653 goto label_continue_loop;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3654
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3655 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3656 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3657 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3658 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3659
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3660 if ((st->iso2022.flags & CODING_STATE_ESCAPE) || BYTE_C0_P (c)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3661 || BYTE_C1_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3662 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3663 if (parse_iso2022_esc (Qnil, &st->iso2022.iso, c,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3664 &st->iso2022.flags, 0))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3665 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3666 switch (st->iso2022.iso.esc)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3667 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3668 case ISO_ESC_DESIGNATE:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3669 mask &= ~CODING_CATEGORY_ISO_8_1_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3670 mask &= ~CODING_CATEGORY_ISO_8_2_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3671 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3672 case ISO_ESC_LOCKING_SHIFT:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3673 mask = CODING_CATEGORY_ISO_LOCK_SHIFT_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3674 goto ran_out_of_chars;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3675 case ISO_ESC_SINGLE_SHIFT:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3676 mask &= ~CODING_CATEGORY_ISO_8_DESIGNATE_MASK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3677 st->iso2022.saw_single_shift = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3678 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3679 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3680 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3681 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3682 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3683 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3684 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3685 mask = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3686 goto ran_out_of_chars;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3687 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3688 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3689 label_continue_loop:;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3690 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3691
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3692 ran_out_of_chars:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3693
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3694 return mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3695 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3696
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3697 static int
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3698 postprocess_iso2022_mask (int mask)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3699 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3700 /* #### kind of cheesy */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3701 /* If seven-bit ISO is allowed, then assume that the encoding is
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3702 entirely seven-bit and turn off the eight-bit ones. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3703 if (mask & CODING_CATEGORY_ISO_7_MASK)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3704 mask &= ~ (CODING_CATEGORY_ISO_8_DESIGNATE_MASK |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3705 CODING_CATEGORY_ISO_8_1_MASK |
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3706 CODING_CATEGORY_ISO_8_2_MASK);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3707 return mask;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3708 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3709
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3710 /* If FLAGS is a null pointer or specifies right-to-left motion,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3711 output a switch-dir-to-left-to-right sequence to DST.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3712 Also update FLAGS if it is not a null pointer.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3713 If INTERNAL_P is set, we are outputting in internal format and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3714 need to handle the CSI differently. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3715
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3716 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3717 restore_left_to_right_direction (struct Lisp_Coding_System *codesys,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3718 unsigned_char_dynarr *dst,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3719 unsigned int *flags,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3720 int internal_p)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3721 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3722 if (!flags || (*flags & CODING_STATE_R2L))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3723 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3724 if (CODING_SYSTEM_ISO2022_SEVEN (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3725 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3726 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3727 Dynarr_add (dst, '[');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3728 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3729 else if (internal_p)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3730 DECODE_ADD_BINARY_CHAR (ISO_CODE_CSI, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3731 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3732 Dynarr_add (dst, ISO_CODE_CSI);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3733 Dynarr_add (dst, '0');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3734 Dynarr_add (dst, ']');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3735 if (flags)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3736 *flags &= ~CODING_STATE_R2L;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3737 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3738 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3739
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3740 /* If FLAGS is a null pointer or specifies a direction different from
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3741 DIRECTION (which should be either CHARSET_RIGHT_TO_LEFT or
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3742 CHARSET_LEFT_TO_RIGHT), output the appropriate switch-dir escape
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3743 sequence to DST. Also update FLAGS if it is not a null pointer.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3744 If INTERNAL_P is set, we are outputting in internal format and
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3745 need to handle the CSI differently. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3746
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3747 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3748 ensure_correct_direction (int direction, struct Lisp_Coding_System *codesys,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3749 unsigned_char_dynarr *dst, unsigned int *flags,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3750 int internal_p)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3751 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3752 if ((!flags || (*flags & CODING_STATE_R2L)) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3753 direction == CHARSET_LEFT_TO_RIGHT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3754 restore_left_to_right_direction (codesys, dst, flags, internal_p);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3755 else if (!CODING_SYSTEM_ISO2022_NO_ISO6429 (codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3756 && (!flags || !(*flags & CODING_STATE_R2L)) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3757 direction == CHARSET_RIGHT_TO_LEFT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3758 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3759 if (CODING_SYSTEM_ISO2022_SEVEN (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3760 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3761 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3762 Dynarr_add (dst, '[');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3763 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3764 else if (internal_p)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3765 DECODE_ADD_BINARY_CHAR (ISO_CODE_CSI, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3766 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3767 Dynarr_add (dst, ISO_CODE_CSI);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3768 Dynarr_add (dst, '2');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3769 Dynarr_add (dst, ']');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3770 if (flags)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3771 *flags |= CODING_STATE_R2L;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3772 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3773 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3774
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3775 /* Convert ISO2022-format data to internal format. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3776
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3777 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3778 decode_coding_iso2022 (Lstream *decoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3779 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3780 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3781 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3782 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3783 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3784 struct decoding_stream *str = DECODING_STREAM_DATA (decoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3785 Lisp_Object coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3786 unsigned_char_dynarr *real_dst = dst;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3787
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3788 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3789 eol_type = str->eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3790 XSETCODING_SYSTEM (coding_system, str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3791
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3792 if (flags & CODING_STATE_COMPOSITE)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3793 dst = str->iso2022.composite_chars;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3794
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3795 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3796 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3797 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3798 if (flags & CODING_STATE_ESCAPE)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3799 { /* Within ESC sequence */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3800 int retval = parse_iso2022_esc (coding_system, &str->iso2022,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3801 c, &flags, 1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3802
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3803 if (retval)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3804 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3805 switch (str->iso2022.esc)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3806 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3807 case ISO_ESC_START_COMPOSITE:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3808 if (str->iso2022.composite_chars)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3809 Dynarr_reset (str->iso2022.composite_chars);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3810 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3811 str->iso2022.composite_chars = Dynarr_new (unsigned_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3812 dst = str->iso2022.composite_chars;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3813 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3814 case ISO_ESC_END_COMPOSITE:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3815 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3816 Bufbyte comstr[MAX_EMCHAR_LEN];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3817 Bytecount len;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3818 Emchar emch = lookup_composite_char (Dynarr_atp (dst, 0),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3819 Dynarr_length (dst));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3820 dst = real_dst;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3821 len = set_charptr_emchar (comstr, emch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3822 Dynarr_add_many (dst, comstr, len);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3823 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3824 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3825
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3826 case ISO_ESC_LITERAL:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3827 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3828 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3829
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3830 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3831 /* Everything else handled already */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3832 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3833 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3834 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3835
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3836 /* Attempted error recovery. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3837 if (str->iso2022.output_direction_sequence)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3838 ensure_correct_direction (flags & CODING_STATE_R2L ?
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3839 CHARSET_RIGHT_TO_LEFT :
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3840 CHARSET_LEFT_TO_RIGHT,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3841 str->codesys, dst, 0, 1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3842 /* More error recovery. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3843 if (!retval || str->iso2022.output_literally)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3844 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3845 /* Output the (possibly invalid) sequence */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3846 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3847 for (i = 0; i < str->iso2022.esc_bytes_index; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3848 DECODE_ADD_BINARY_CHAR (str->iso2022.esc_bytes[i], dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3849 flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3850 if (!retval)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3851 n++, src--;/* Repeat the loop with the same character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3852 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3853 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3854 /* No sense in reprocessing the final byte of the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3855 escape sequence; it could mess things up anyway.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3856 Just add it now. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3857 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3858 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3859 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3860 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3861 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3862 else if (BYTE_C0_P (c) || BYTE_C1_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3863 { /* Control characters */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3864
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3865 /***** Error-handling *****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3866
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3867 /* If we were in the middle of a character, dump out the
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3868 partial character. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3869 DECODE_OUTPUT_PARTIAL_CHAR (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3870
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3871 /* If we just saw a single-shift character, dump it out.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3872 This may dump out the wrong sort of single-shift character,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3873 but least it will give an indication that something went
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3874 wrong. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3875 if (flags & CODING_STATE_SS2)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3876 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3877 DECODE_ADD_BINARY_CHAR (ISO_CODE_SS2, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3878 flags &= ~CODING_STATE_SS2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3879 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3880 if (flags & CODING_STATE_SS3)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3881 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3882 DECODE_ADD_BINARY_CHAR (ISO_CODE_SS3, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3883 flags &= ~CODING_STATE_SS3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3884 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3885
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3886 /***** Now handle the control characters. *****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3887
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3888 /* Handle CR/LF */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3889 DECODE_HANDLE_EOL_TYPE (eol_type, c, flags, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3890
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3891 flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3892
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3893 if (!parse_iso2022_esc (coding_system, &str->iso2022, c, &flags, 1))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3894 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3895 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3896 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3897 { /* Graphic characters */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3898 Lisp_Object charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3899 int lb;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3900 int reg;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3901
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3902 DECODE_HANDLE_EOL_TYPE (eol_type, c, flags, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3903
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3904 /* Now determine the charset. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3905 reg = ((flags & CODING_STATE_SS2) ? 2
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3906 : (flags & CODING_STATE_SS3) ? 3
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3907 : !BYTE_ASCII_P (c) ? str->iso2022.register_right
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3908 : str->iso2022.register_left);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3909 charset = str->iso2022.charset[reg];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3910
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3911 /* Error checking: */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3912 if (NILP (charset) || str->iso2022.invalid_designated[reg]
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3913 || (((c & 0x7F) == ' ' || (c & 0x7F) == ISO_CODE_DEL)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3914 && XCHARSET_CHARS (charset) == 94))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3915 /* Mrmph. We are trying to invoke a register that has no
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3916 or an invalid charset in it, or trying to add a character
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3917 outside the range of the charset. Insert that char literally
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3918 to preserve it for the output. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3919 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3920 DECODE_OUTPUT_PARTIAL_CHAR (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3921 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3922 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3923
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3924 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3925 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3926 /* Things are probably hunky-dorey. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3927
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3928 /* Fetch reverse charset, maybe. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3929 if (((flags & CODING_STATE_R2L) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3930 XCHARSET_DIRECTION (charset) == CHARSET_LEFT_TO_RIGHT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3931 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3932 (!(flags & CODING_STATE_R2L) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3933 XCHARSET_DIRECTION (charset) == CHARSET_RIGHT_TO_LEFT))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3934 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3935 Lisp_Object new_charset =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3936 XCHARSET_REVERSE_DIRECTION_CHARSET (charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3937 if (!NILP (new_charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3938 charset = new_charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3939 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3940
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3941 lb = XCHARSET_LEADING_BYTE (charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3942 switch (XCHARSET_REP_BYTES (charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3943 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3944 case 1: /* ASCII */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3945 DECODE_OUTPUT_PARTIAL_CHAR (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3946 Dynarr_add (dst, c & 0x7F);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3947 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3948
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3949 case 2: /* one-byte official */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3950 DECODE_OUTPUT_PARTIAL_CHAR (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3951 Dynarr_add (dst, lb);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3952 Dynarr_add (dst, c | 0x80);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3953 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3954
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3955 case 3: /* one-byte private or two-byte official */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3956 if (XCHARSET_PRIVATE_P (charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3957 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3958 DECODE_OUTPUT_PARTIAL_CHAR (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3959 Dynarr_add (dst, PRE_LEADING_BYTE_PRIVATE_1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3960 Dynarr_add (dst, lb);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3961 Dynarr_add (dst, c | 0x80);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3962 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3963 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3964 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3965 if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3966 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3967 Dynarr_add (dst, lb);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3968 Dynarr_add (dst, ch | 0x80);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3969 Dynarr_add (dst, c | 0x80);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3970 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3971 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3972 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3973 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3974 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3975 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3976
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3977 default: /* two-byte private */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3978 if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3979 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3980 Dynarr_add (dst, PRE_LEADING_BYTE_PRIVATE_2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3981 Dynarr_add (dst, lb);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3982 Dynarr_add (dst, ch | 0x80);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3983 Dynarr_add (dst, c | 0x80);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3984 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3985 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3986 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3987 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3988 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3989 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3990
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3991 if (!ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3992 flags &= CODING_STATE_ISO2022_LOCK;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3993 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3994
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3995 label_continue_loop:;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3996 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3997
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3998 if (flags & CODING_STATE_END)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
3999 DECODE_OUTPUT_PARTIAL_CHAR (ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4000
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4001 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4002 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4003
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4004
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4005 /***** ISO2022 encoder *****/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4006
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4007 /* Designate CHARSET into register REG. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4008
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4009 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4010 iso2022_designate (Lisp_Object charset, unsigned char reg,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4011 struct encoding_stream *str, unsigned_char_dynarr *dst)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4012 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4013 CONST char *inter94 = "()*+", *inter96= ",-./";
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4014 int type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4015 unsigned char final;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4016 Lisp_Object old_charset = str->iso2022.charset[reg];
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4017
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4018 str->iso2022.charset[reg] = charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4019 if (!CHARSETP (charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4020 /* charset might be an initial nil or t. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4021 return;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4022 type = XCHARSET_TYPE (charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4023 final = XCHARSET_FINAL (charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4024 if (!str->iso2022.force_charset_on_output[reg] &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4025 CHARSETP (old_charset) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4026 XCHARSET_TYPE (old_charset) == type &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4027 XCHARSET_FINAL (old_charset) == final)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4028 return;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4029
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4030 str->iso2022.force_charset_on_output[reg] = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4031
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4032 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4033 charset_conversion_spec_dynarr *dyn =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4034 str->codesys->iso2022.output_conv;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4035
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4036 if (dyn)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4037 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4038 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4039
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4040 for (i = 0; i < Dynarr_length (dyn); i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4041 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4042 struct charset_conversion_spec *spec = Dynarr_atp (dyn, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4043 if (EQ (charset, spec->from_charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4044 charset = spec->to_charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4045 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4046 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4047 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4048
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4049 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4050 switch (type)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4051 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4052 case CHARSET_TYPE_94:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4053 Dynarr_add (dst, inter94[reg]);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4054 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4055 case CHARSET_TYPE_96:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4056 Dynarr_add (dst, inter96[reg]);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4057 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4058 case CHARSET_TYPE_94X94:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4059 Dynarr_add (dst, '$');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4060 if (reg != 0
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4061 || !(CODING_SYSTEM_ISO2022_SHORT (str->codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4062 || final < '@'
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4063 || final > 'B')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4064 Dynarr_add (dst, inter94[reg]);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4065 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4066 case CHARSET_TYPE_96X96:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4067 Dynarr_add (dst, '$');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4068 Dynarr_add (dst, inter96[reg]);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4069 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4070 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4071 Dynarr_add (dst, final);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4072 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4073
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4074 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4075 ensure_normal_shift (struct encoding_stream *str, unsigned_char_dynarr *dst)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4076 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4077 if (str->iso2022.register_left != 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4078 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4079 Dynarr_add (dst, ISO_CODE_SI);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4080 str->iso2022.register_left = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4081 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4082 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4083
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4084 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4085 ensure_shift_out (struct encoding_stream *str, unsigned_char_dynarr *dst)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4086 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4087 if (str->iso2022.register_left != 1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4088 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4089 Dynarr_add (dst, ISO_CODE_SO);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4090 str->iso2022.register_left = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4091 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4092 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4093
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4094 /* Convert internally-formatted data to ISO2022 format. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4095
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4096 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4097 encode_coding_iso2022 (Lstream *encoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4098 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4099 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4100 unsigned char charmask, c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4101 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4102 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4103 unsigned char char_boundary;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4104 struct encoding_stream *str = ENCODING_STREAM_DATA (encoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4105 struct Lisp_Coding_System *codesys = str->codesys;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4106 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4107 Lisp_Object charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4108 int half;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4109
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4110 /* flags for handling composite chars. We do a little switcharoo
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4111 on the source while we're outputting the composite char. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4112 unsigned int saved_n = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4113 CONST unsigned char *saved_src = NULL;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4114 int in_composite = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4115
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4116 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4117 eol_type = CODING_SYSTEM_EOL_TYPE (str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4118 char_boundary = str->iso2022.current_char_boundary;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4119 charset = str->iso2022.current_charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4120 half = str->iso2022.current_half;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4121
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4122 back_to_square_n:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4123 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4124 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4125 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4126
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4127 if (BYTE_ASCII_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4128 { /* Processing ASCII character */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4129 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4130
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4131 restore_left_to_right_direction (codesys, dst, &flags, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4132
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4133 /* Make sure G0 contains ASCII */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4134 if ((c > ' ' && c < ISO_CODE_DEL) ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4135 !CODING_SYSTEM_ISO2022_NO_ASCII_CNTL (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4136 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4137 ensure_normal_shift (str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4138 iso2022_designate (Vcharset_ascii, 0, str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4139 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4140
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4141 /* If necessary, restore everything to the default state
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4142 at end-of-line */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4143 if (c == '\n' &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4144 !(CODING_SYSTEM_ISO2022_NO_ASCII_EOL (codesys)))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4145 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4146 restore_left_to_right_direction (codesys, dst, &flags, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4147
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4148 ensure_normal_shift (str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4149
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4150 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4151 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4152 Lisp_Object initial_charset =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4153 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (codesys, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4154 iso2022_designate (initial_charset, i, str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4155 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4156 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4157 if (c == '\n')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4158 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4159 if (eol_type != EOL_LF && eol_type != EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4160 Dynarr_add (dst, '\r');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4161 if (eol_type != EOL_CR)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4162 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4163 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4164 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4165 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4166 if (CODING_SYSTEM_ISO2022_ESCAPE_QUOTED (codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4167 && fit_to_be_escape_quoted (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4168 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4169 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4170 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4171 char_boundary = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4172 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4173
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4174 else if (BUFBYTE_LEADING_BYTE_P (c) || BUFBYTE_LEADING_BYTE_P (ch))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4175 { /* Processing Leading Byte */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4176 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4177 charset = CHARSET_BY_LEADING_BYTE (c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4178 if (LEADING_BYTE_PREFIX_P(c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4179 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4180 else if (!EQ (charset, Vcharset_control_1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4181 && !EQ (charset, Vcharset_composite))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4182 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4183 int reg;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4184
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4185 ensure_correct_direction (XCHARSET_DIRECTION (charset),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4186 codesys, dst, &flags, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4187
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4188 /* Now determine which register to use. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4189 reg = -1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4190 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4191 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4192 if (EQ (charset, str->iso2022.charset[i]) ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4193 EQ (charset,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4194 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (codesys, i)))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4195 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4196 reg = i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4197 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4198 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4199 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4200
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4201 if (reg == -1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4202 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4203 if (XCHARSET_GRAPHIC (charset) != 0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4204 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4205 if (!NILP (str->iso2022.charset[1]) &&
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4206 (!CODING_SYSTEM_ISO2022_SEVEN (codesys) ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4207 CODING_SYSTEM_ISO2022_LOCK_SHIFT (codesys)))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4208 reg = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4209 else if (!NILP (str->iso2022.charset[2]))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4210 reg = 2;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4211 else if (!NILP (str->iso2022.charset[3]))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4212 reg = 3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4213 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4214 reg = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4215 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4216 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4217 reg = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4218 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4219
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4220 iso2022_designate (charset, reg, str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4221
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4222 /* Now invoke that register. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4223 switch (reg)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4224 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4225 case 0:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4226 ensure_normal_shift (str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4227 half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4228 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4229
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4230 case 1:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4231 if (CODING_SYSTEM_ISO2022_SEVEN (codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4232 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4233 ensure_shift_out (str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4234 half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4235 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4236 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4237 half = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4238 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4239
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4240 case 2:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4241 if (CODING_SYSTEM_ISO2022_SEVEN (str->codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4242 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4243 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4244 Dynarr_add (dst, 'N');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4245 half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4246 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4247 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4248 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4249 Dynarr_add (dst, ISO_CODE_SS2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4250 half = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4251 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4252 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4253
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4254 case 3:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4255 if (CODING_SYSTEM_ISO2022_SEVEN (str->codesys))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4256 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4257 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4258 Dynarr_add (dst, 'O');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4259 half = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4260 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4261 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4262 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4263 Dynarr_add (dst, ISO_CODE_SS3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4264 half = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4265 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4266 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4267
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4268 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4269 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4270 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4271 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4272 char_boundary = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4273 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4274 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4275 { /* Processing Non-ASCII character */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4276 charmask = (half == 0 ? 0x7F : 0xFF);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4277 char_boundary = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4278 if (EQ (charset, Vcharset_control_1))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4279 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4280 if (CODING_SYSTEM_ISO2022_ESCAPE_QUOTED (codesys)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4281 && fit_to_be_escape_quoted (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4282 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4283 /* you asked for it ... */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4284 Dynarr_add (dst, c - 0x20);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4285 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4286 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4287 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4288 switch (XCHARSET_REP_BYTES (charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4289 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4290 case 2:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4291 Dynarr_add (dst, c & charmask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4292 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4293 case 3:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4294 if (XCHARSET_PRIVATE_P (charset))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4295 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4296 Dynarr_add (dst, c & charmask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4297 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4298 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4299 else if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4300 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4301 if (EQ (charset, Vcharset_composite))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4302 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4303 if (in_composite)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4304 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4305 /* #### Bother! We don't know how to
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4306 handle this yet. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4307 Dynarr_add (dst, '~');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4308 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4309 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4310 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4311 Emchar emch = MAKE_CHAR (Vcharset_composite,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4312 ch & 0x7F, c & 0x7F);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4313 Lisp_Object lstr = composite_char_string (emch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4314 saved_n = n;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4315 saved_src = src;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4316 in_composite = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4317 src = XSTRING_DATA (lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4318 n = XSTRING_LENGTH (lstr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4319 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4320 Dynarr_add (dst, '0'); /* start composing */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4321 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4322 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4323 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4324 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4325 Dynarr_add (dst, ch & charmask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4326 Dynarr_add (dst, c & charmask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4327 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4328 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4329 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4330 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4331 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4332 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4333 char_boundary = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4334 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4335 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4336 case 4:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4337 if (ch)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4338 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4339 Dynarr_add (dst, ch & charmask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4340 Dynarr_add (dst, c & charmask);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4341 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4342 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4343 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4344 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4345 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4346 char_boundary = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4347 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4348 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4349 default:
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4350 abort ();
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4351 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4352 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4353 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4354 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4355
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4356 if (in_composite)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4357 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4358 n = saved_n;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4359 src = saved_src;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4360 in_composite = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4361 Dynarr_add (dst, ISO_CODE_ESC);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4362 Dynarr_add (dst, '1'); /* end composing */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4363 goto back_to_square_n; /* Wheeeeeeeee ..... */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4364 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4365
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4366 if (char_boundary && flags & CODING_STATE_END)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4367 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4368 restore_left_to_right_direction (codesys, dst, &flags, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4369 ensure_normal_shift (str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4370 for (i = 0; i < 4; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4371 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4372 Lisp_Object initial_charset =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4373 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (codesys, i);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4374 iso2022_designate (initial_charset, i, str, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4375 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4376 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4377
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4378 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4379 str->iso2022.current_char_boundary = char_boundary;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4380 str->iso2022.current_charset = charset;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4381 str->iso2022.current_half = half;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4382
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4383 /* Verbum caro factum est! */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4384 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4385 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4386
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4387 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4388 /* No-conversion methods */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4389 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4390
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4391 /* This is used when reading in "binary" files -- i.e. files that may
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4392 contain all 256 possible byte values and that are not to be
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4393 interpreted as being in any particular decoding. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4394 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4395 decode_coding_no_conversion (Lstream *decoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4396 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4397 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4398 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4399 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4400 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4401 struct decoding_stream *str = DECODING_STREAM_DATA (decoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4402
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4403 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4404 eol_type = str->eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4405
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4406 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4407 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4408 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4409
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4410 DECODE_HANDLE_EOL_TYPE (eol_type, c, flags, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4411 DECODE_ADD_BINARY_CHAR (c, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4412 label_continue_loop:;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4413 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4414
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4415 DECODE_HANDLE_END_OF_CONVERSION (flags, ch, dst);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4416
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4417 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4418 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4419
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4420 static void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4421 encode_coding_no_conversion (Lstream *encoding, CONST unsigned char *src,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4422 unsigned_char_dynarr *dst, unsigned int n)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4423 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4424 unsigned char c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4425 struct encoding_stream *str = ENCODING_STREAM_DATA (encoding);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4426 unsigned int flags, ch;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4427 enum eol_type eol_type;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4428
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4429 CODING_STREAM_DECOMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4430 eol_type = CODING_SYSTEM_EOL_TYPE (str->codesys);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4431
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4432 while (n--)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4433 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4434 c = *src++;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4435 if (c == '\n')
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4436 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4437 if (eol_type != EOL_LF && eol_type != EOL_AUTODETECT)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4438 Dynarr_add (dst, '\r');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4439 if (eol_type != EOL_CR)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4440 Dynarr_add (dst, '\n');
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4441 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4442 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4443 else if (BYTE_ASCII_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4444 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4445 assert (ch == 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4446 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4447 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4448 else if (BUFBYTE_LEADING_BYTE_P (c))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4449 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4450 assert (ch == 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4451 if (c == LEADING_BYTE_LATIN_ISO8859_1 ||
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4452 c == LEADING_BYTE_CONTROL_1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4453 ch = c;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4454 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4455 Dynarr_add (dst, '~'); /* untranslatable character */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4456 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4457 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4458 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4459 if (ch == LEADING_BYTE_LATIN_ISO8859_1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4460 Dynarr_add (dst, c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4461 else if (ch == LEADING_BYTE_CONTROL_1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4462 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4463 assert (c < 0xC0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4464 Dynarr_add (dst, c - 0x20);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4465 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4466 /* else it should be the second or third byte of an
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4467 untranslatable character, so ignore it */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4468 ch = 0;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4469 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4470 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4471
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4472 CODING_STREAM_COMPOSE (str, flags, ch);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4473 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4474
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4475
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4476 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4477 /* Simple internal/external functions */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4478 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4479
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4480 static Extbyte_dynarr *conversion_out_dynarr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4481 static Bufbyte_dynarr *conversion_in_dynarr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4482
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4483 /* Determine coding system from coding format */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4484
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4485 #define FILE_NAME_CODING_SYSTEM \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4486 ((NILP (Vfile_name_coding_system) || \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4487 (EQ ((Vfile_name_coding_system), Qbinary))) ? \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4488 Qnil : Fget_coding_system (Vfile_name_coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4489
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4490 /* #### not correct for all values of `fmt'! */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4491 #define FMT_CODING_SYSTEM(fmt) \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4492 (((fmt) == FORMAT_FILENAME) ? FILE_NAME_CODING_SYSTEM : \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4493 ((fmt) == FORMAT_CTEXT ) ? Fget_coding_system (Qctext) : \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4494 ((fmt) == FORMAT_TERMINAL) ? FILE_NAME_CODING_SYSTEM : \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4495 Qnil)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4496
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4497 extern CONST Extbyte *
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4498 convert_to_external_format (CONST Bufbyte *ptr,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4499 Bytecount len,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4500 Extcount *len_out,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4501 enum external_data_format fmt)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4502 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4503 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4504 Lisp_Object coding_system = FMT_CODING_SYSTEM (fmt);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4505 #else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4506 Lisp_Object coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4507 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4508
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4509 if (!conversion_out_dynarr)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4510 conversion_out_dynarr = Dynarr_new (Extbyte);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4511 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4512 Dynarr_reset (conversion_out_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4513
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4514 if (NILP (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4515 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4516 CONST Bufbyte *end = ptr + len;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4517
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4518 for (; ptr < end;)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4519 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4520 Bufbyte c =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4521 (BYTE_ASCII_P (*ptr)) ? *ptr :
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4522 (*ptr == LEADING_BYTE_CONTROL_1) ? (*(ptr+1) - 0x20) :
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4523 (*ptr == LEADING_BYTE_LATIN_ISO8859_1) ? (*(ptr+1)) :
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4524 '~';
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4525
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4526 Dynarr_add (conversion_out_dynarr, (Extbyte) c);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4527 INC_CHARPTR (ptr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4528 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4529
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4530 #ifdef ERROR_CHECK_BUFPOS
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4531 assert (ptr == end);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4532 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4533 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4534 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4535 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4536 Lisp_Object instream, outstream, da_outstream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4537 Lstream *istr, *ostr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4538 struct gcpro gcpro1, gcpro2, gcpro3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4539 char tempbuf[1024]; /* some random amount */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4540
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4541 instream = make_fixed_buffer_input_stream ((unsigned char *) ptr, len);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4542 da_outstream = make_dynarr_output_stream
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4543 ((unsigned_char_dynarr *) conversion_out_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4544 outstream =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4545 make_encoding_output_stream (XLSTREAM (da_outstream), coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4546 istr = XLSTREAM (instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4547 ostr = XLSTREAM (outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4548 GCPRO3 (instream, outstream, da_outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4549 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4550 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4551 int size_in_bytes = Lstream_read (istr, tempbuf, sizeof (tempbuf));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4552 if (!size_in_bytes)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4553 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4554 Lstream_write (ostr, tempbuf, size_in_bytes);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4555 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4556 Lstream_close (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4557 Lstream_close (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4558 UNGCPRO;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4559 Lstream_delete (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4560 Lstream_delete (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4561 Lstream_delete (XLSTREAM (da_outstream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4562 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4563
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4564 *len_out = Dynarr_length (conversion_out_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4565 Dynarr_add (conversion_out_dynarr, 0); /* remember to zero-terminate! */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4566 return Dynarr_atp (conversion_out_dynarr, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4567 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4568
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4569 extern CONST Bufbyte *
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4570 convert_from_external_format (CONST Extbyte *ptr,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4571 Extcount len,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4572 Bytecount *len_out,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4573 enum external_data_format fmt)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4574 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4575 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4576 Lisp_Object coding_system = FMT_CODING_SYSTEM (fmt);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4577 #else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4578 Lisp_Object coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4579 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4580
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4581 if (!conversion_in_dynarr)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4582 conversion_in_dynarr = Dynarr_new (Bufbyte);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4583 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4584 Dynarr_reset (conversion_in_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4585
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4586 if (NILP (coding_system))
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4587 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4588 CONST Extbyte *end = ptr + len;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4589 for (; ptr < end; ptr++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4590 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4591 Extbyte c = *ptr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4592 DECODE_ADD_BINARY_CHAR (c, conversion_in_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4593 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4594 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4595 else
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4596 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4597 Lisp_Object instream, outstream, da_outstream;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4598 Lstream *istr, *ostr;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4599 struct gcpro gcpro1, gcpro2, gcpro3;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4600 char tempbuf[1024]; /* some random amount */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4601
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4602 instream = make_fixed_buffer_input_stream ((unsigned char *) ptr, len);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4603 da_outstream = make_dynarr_output_stream
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4604 ((unsigned_char_dynarr *) conversion_in_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4605 outstream =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4606 make_decoding_output_stream (XLSTREAM (da_outstream), coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4607 istr = XLSTREAM (instream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4608 ostr = XLSTREAM (outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4609 GCPRO3 (instream, outstream, da_outstream);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4610 while (1)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4611 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4612 int size_in_bytes = Lstream_read (istr, tempbuf, sizeof (tempbuf));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4613 if (!size_in_bytes)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4614 break;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4615 Lstream_write (ostr, tempbuf, size_in_bytes);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4616 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4617 Lstream_close (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4618 Lstream_close (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4619 UNGCPRO;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4620 Lstream_delete (istr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4621 Lstream_delete (ostr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4622 Lstream_delete (XLSTREAM (da_outstream));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4623 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4624
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4625 *len_out = Dynarr_length (conversion_in_dynarr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4626 Dynarr_add (conversion_in_dynarr, 0); /* remember to zero-terminate! */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4627 return Dynarr_atp (conversion_in_dynarr, 0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4628 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4629
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4630
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4631 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4632 /* Initialization */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4633 /************************************************************************/
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4634
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4635 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4636 syms_of_mule_coding (void)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4637 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4638 defsymbol (&Qbuffer_file_coding_system, "buffer-file-coding-system");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4639 deferror (&Qcoding_system_error, "coding-system-error",
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4640 "Coding-system error", Qio_error);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4641
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4642 DEFSUBR (Fcoding_system_p);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4643 DEFSUBR (Ffind_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4644 DEFSUBR (Fget_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4645 DEFSUBR (Fcoding_system_list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4646 DEFSUBR (Fcoding_system_name);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4647 DEFSUBR (Fmake_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4648 DEFSUBR (Fcopy_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4649 DEFSUBR (Fsubsidiary_coding_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4650
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4651 DEFSUBR (Fcoding_system_type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4652 DEFSUBR (Fcoding_system_doc_string);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4653 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4654 DEFSUBR (Fcoding_system_charset);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4655 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4656 DEFSUBR (Fcoding_system_property);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4657
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4658 DEFSUBR (Fcoding_category_list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4659 DEFSUBR (Fset_coding_priority_list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4660 DEFSUBR (Fcoding_priority_list);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4661 DEFSUBR (Fset_coding_category_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4662 DEFSUBR (Fcoding_category_system);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4663
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4664 DEFSUBR (Fdetect_coding_region);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4665 DEFSUBR (Fdecode_coding_region);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4666 DEFSUBR (Fencode_coding_region);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4667 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4668 DEFSUBR (Fdecode_shift_jis_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4669 DEFSUBR (Fencode_shift_jis_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4670 DEFSUBR (Fdecode_big5_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4671 DEFSUBR (Fencode_big5_char);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4672 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4673 defsymbol (&Qcoding_system_p, "coding-system-p");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4674 defsymbol (&Qno_conversion, "no-conversion");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4675 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4676 defsymbol (&Qbig5, "big5");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4677 defsymbol (&Qshift_jis, "shift-jis");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4678 defsymbol (&Qccl, "ccl");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4679 defsymbol (&Qiso2022, "iso2022");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4680 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4681 defsymbol (&Qmnemonic, "mnemonic");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4682 defsymbol (&Qeol_type, "eol-type");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4683 defsymbol (&Qpost_read_conversion, "post-read-conversion");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4684 defsymbol (&Qpre_write_conversion, "pre-write-conversion");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4685
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4686 defsymbol (&Qcr, "cr");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4687 defsymbol (&Qlf, "lf");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4688 defsymbol (&Qcrlf, "crlf");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4689 defsymbol (&Qeol_cr, "eol-cr");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4690 defsymbol (&Qeol_lf, "eol-lf");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4691 defsymbol (&Qeol_crlf, "eol-crlf");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4692 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4693 defsymbol (&Qcharset_g0, "charset-g0");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4694 defsymbol (&Qcharset_g1, "charset-g1");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4695 defsymbol (&Qcharset_g2, "charset-g2");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4696 defsymbol (&Qcharset_g3, "charset-g3");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4697 defsymbol (&Qforce_g0_on_output, "force-g0-on-output");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4698 defsymbol (&Qforce_g1_on_output, "force-g1-on-output");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4699 defsymbol (&Qforce_g2_on_output, "force-g2-on-output");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4700 defsymbol (&Qforce_g3_on_output, "force-g3-on-output");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4701 defsymbol (&Qno_iso6429, "no-iso6429");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4702 defsymbol (&Qinput_charset_conversion, "input-charset-conversion");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4703 defsymbol (&Qoutput_charset_conversion, "output-charset-conversion");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4704 #endif
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4705 defsymbol (&Qshort, "short");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4706 defsymbol (&Qno_ascii_eol, "no-ascii-eol");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4707 defsymbol (&Qno_ascii_cntl, "no-ascii-cntl");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4708 defsymbol (&Qseven, "seven");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4709 defsymbol (&Qlock_shift, "lock-shift");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4710 defsymbol (&Qescape_quoted, "escape-quoted");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4711
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4712 defsymbol (&Qencode, "encode");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4713 defsymbol (&Qdecode, "decode");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4714
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4715 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4716 defsymbol (&Qctext, "ctext");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4717 defsymbol (&coding_category_symbol[CODING_CATEGORY_SHIFT_JIS],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4718 "shift-jis");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4719 defsymbol (&coding_category_symbol[CODING_CATEGORY_BIG5],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4720 "big5");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4721 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4722 defsymbol (&coding_category_symbol[CODING_CATEGORY_ISO_7],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4723 "iso-7");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4724 defsymbol (&coding_category_symbol[CODING_CATEGORY_ISO_8_DESIGNATE],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4725 "iso-8-designate");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4726 defsymbol (&coding_category_symbol[CODING_CATEGORY_ISO_8_1],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4727 "iso-8-1");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4728 defsymbol (&coding_category_symbol[CODING_CATEGORY_ISO_8_2],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4729 "iso-8-2");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4730 defsymbol (&coding_category_symbol[CODING_CATEGORY_ISO_LOCK_SHIFT],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4731 "iso-lock-shift");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4732 defsymbol (&coding_category_symbol[CODING_CATEGORY_NO_CONVERSION],
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4733 "no-conversion");
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4734 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4735
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4736 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4737 lstream_type_create_mule_coding (void)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4738 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4739 LSTREAM_HAS_METHOD (decoding, reader);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4740 LSTREAM_HAS_METHOD (decoding, writer);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4741 LSTREAM_HAS_METHOD (decoding, rewinder);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4742 LSTREAM_HAS_METHOD (decoding, seekable_p);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4743 LSTREAM_HAS_METHOD (decoding, flusher);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4744 LSTREAM_HAS_METHOD (decoding, closer);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4745 LSTREAM_HAS_METHOD (decoding, marker);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4746
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4747 LSTREAM_HAS_METHOD (encoding, reader);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4748 LSTREAM_HAS_METHOD (encoding, writer);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4749 LSTREAM_HAS_METHOD (encoding, rewinder);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4750 LSTREAM_HAS_METHOD (encoding, seekable_p);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4751 LSTREAM_HAS_METHOD (encoding, flusher);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4752 LSTREAM_HAS_METHOD (encoding, closer);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4753 LSTREAM_HAS_METHOD (encoding, marker);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4754 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4755
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4756 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4757 vars_of_mule_coding (void)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4758 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4759 int i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4760
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4761 /* Initialize to something reasonable ... */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4762 for (i = 0; i <= CODING_CATEGORY_LAST; i++)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4763 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4764 coding_category_system[i] = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4765 coding_category_by_priority[i] = i;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4766 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4767
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4768 Fprovide (intern ("file-coding"));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4769
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4770 DEFVAR_LISP ("keyboard-coding-system", &Vkeyboard_coding_system /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4771 Coding system used for TTY keyboard input.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4772 Not used under a windowing system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4773 */ );
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4774 Vkeyboard_coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4775
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4776 DEFVAR_LISP ("terminal-coding-system", &Vterminal_coding_system /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4777 Coding system used for TTY display output.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4778 Not used under a windowing system.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4779 */ );
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4780 Vterminal_coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4781
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4782 DEFVAR_LISP ("coding-system-for-read", &Vcoding_system_for_read /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4783 Overriding coding system used when writing a file or process.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4784 You should *bind* this, not set it. If this is non-nil, it specifies
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4785 the coding system that will be used when a file or process is read
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4786 in, and overrides `buffer-file-coding-system-for-read',
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4787 `insert-file-contents-pre-hook', etc. Use those variables instead of
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4788 this one for permanent changes to the environment.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4789 */ );
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4790 Vcoding_system_for_read = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4791
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4792 DEFVAR_LISP ("coding-system-for-write",
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4793 &Vcoding_system_for_write /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4794 Overriding coding system used when writing a file or process.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4795 You should *bind* this, not set it. If this is non-nil, it specifies
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4796 the coding system that will be used when a file or process is wrote
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4797 in, and overrides `buffer-file-coding-system',
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4798 `write-region-pre-hook', etc. Use those variables instead of this one
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4799 for permanent changes to the environment.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4800 */ );
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4801 Vcoding_system_for_write = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4802
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4803 DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4804 Coding system used to convert pathnames when accessing files.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4805 */ );
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4806 Vfile_name_coding_system = Qnil;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4807
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4808 DEFVAR_BOOL ("enable-multibyte-characters", &enable_multibyte_characters /*
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4809 Non-nil means the buffer contents are regarded as multi-byte form
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4810 of characters, not a binary code. This affects the display, file I/O,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4811 and behaviors of various editing commands.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4812
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4813 Setting this to nil does not do anything.
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4814 */ );
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4815 enable_multibyte_characters = 1;
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4816 }
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4817
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4818 void
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4819 complex_vars_of_mule_coding (void)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4820 {
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4821 staticpro (&Vcoding_system_hashtable);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4822 Vcoding_system_hashtable = make_lisp_hashtable (50, HASHTABLE_NONWEAK,
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4823 HASHTABLE_EQ);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4824
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4825 the_codesys_prop_dynarr = Dynarr_new (codesys_prop);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4826
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4827 #define DEFINE_CODESYS_PROP(Prop_Type, Sym) do \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4828 { \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4829 struct codesys_prop csp; \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4830 csp.sym = (Sym); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4831 csp.prop_type = (Prop_Type); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4832 Dynarr_add (the_codesys_prop_dynarr, csp); \
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4833 } while (0)
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4834
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4835 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qmnemonic);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4836 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qeol_type);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4837 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qeol_cr);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4838 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qeol_crlf);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4839 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qeol_lf);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4840 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qpost_read_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4841 DEFINE_CODESYS_PROP (CODESYS_PROP_ALL_OK, Qpre_write_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4842 #ifdef MULE
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4843 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qcharset_g0);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4844 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qcharset_g1);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4845 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qcharset_g2);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4846 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qcharset_g3);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4847 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qforce_g0_on_output);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4848 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qforce_g1_on_output);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4849 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qforce_g2_on_output);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4850 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qforce_g3_on_output);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4851 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qshort);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4852 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qno_ascii_eol);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4853 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qno_ascii_cntl);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4854 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qseven);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4855 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qlock_shift);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4856 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qno_iso6429);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4857 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qescape_quoted);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4858 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qinput_charset_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4859 DEFINE_CODESYS_PROP (CODESYS_PROP_ISO2022, Qoutput_charset_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4860
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4861 DEFINE_CODESYS_PROP (CODESYS_PROP_CCL, Qencode);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4862 DEFINE_CODESYS_PROP (CODESYS_PROP_CCL, Qdecode);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4863 #endif /* MULE */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4864 /* Need to create this here or we're really screwed. */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4865 Fmake_coding_system (Qno_conversion, Qno_conversion, build_string ("No conversion"),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4866 list2 (Qmnemonic, build_string ("Noconv")));
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4867
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4868 Fcopy_coding_system (Fcoding_system_property (Qno_conversion, Qeol_lf),
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4869 Qbinary);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4870
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4871 /* Need this for bootstrapping */
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4872 coding_category_system[CODING_CATEGORY_NO_CONVERSION] =
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4873 Fget_coding_system (Qno_conversion);
11cf20601dec Import from CVS: tag r20-5b28
cvs
parents:
diff changeset
4874 }