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70
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1 /* Functions to handle multilingual characters.
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2 Copyright (C) 1992, 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
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29 #include "buffer.h"
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30 #include "chartab.h"
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31 #include "elhash.h"
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32 #include "lstream.h"
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33 #include "device.h"
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34 #include "faces.h"
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35
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36 /* The various pre-defined charsets. */
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37
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38 Lisp_Object Vcharset_ascii;
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39 Lisp_Object Vcharset_control_1;
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40 Lisp_Object Vcharset_latin_1;
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41 Lisp_Object Vcharset_latin_2;
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42 Lisp_Object Vcharset_latin_3;
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43 Lisp_Object Vcharset_latin_4;
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44 Lisp_Object Vcharset_cyrillic;
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45 Lisp_Object Vcharset_arabic;
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46 Lisp_Object Vcharset_greek;
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47 Lisp_Object Vcharset_hebrew;
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48 Lisp_Object Vcharset_latin_5;
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49 Lisp_Object Vcharset_thai;
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50 Lisp_Object Vcharset_japanese_jisx0201_kana;
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51 Lisp_Object Vcharset_japanese_jisx0201_roman;
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52 Lisp_Object Vcharset_japanese_jisx0208_1978;
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53 Lisp_Object Vcharset_japanese_jisx0208;
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54 Lisp_Object Vcharset_japanese_jisx0212;
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55 Lisp_Object Vcharset_chinese_gb;
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56 Lisp_Object Vcharset_chinese_big5_1;
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57 Lisp_Object Vcharset_chinese_big5_2;
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58 Lisp_Object Vcharset_chinese_cns11643_1;
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59 Lisp_Object Vcharset_chinese_cns11643_2;
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60 Lisp_Object Vcharset_korean_ksc5601;
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61 Lisp_Object Vcharset_composite;
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62
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63 /* Hashtables for composite chars. One maps string representing
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64 composed chars to their equivalent chars; one goes the
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65 other way. */
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66 Lisp_Object Vcomposite_char_char2string_hashtable;
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67 Lisp_Object Vcomposite_char_string2char_hashtable;
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68
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69 /* Table of charsets indexed by leading byte. */
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70 Lisp_Object charset_by_leading_byte[128];
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71
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72 /* Table of charsets indexed by type/final-byte/direction. */
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73 Lisp_Object charset_by_attributes[4][128][2];
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74
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75 static int composite_char_row_next;
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76 static int composite_char_col_next;
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77
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78 /* Table of number of bytes in the string representation of a character
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79 indexed by the first byte of that representation.
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80
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81 This value can be derived other ways -- e.g. something like
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82
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83 (BYTE_ASCII_P (first_byte) ? 1 :
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84 XCHARSET_REP_BYTES (CHARSET_BY_LEADING_BYTE (first_byte)))
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85
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86 but it's faster this way. */
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87
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88 Bytecount rep_bytes_by_first_byte[0xA0] =
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89 { /* 16 x 8 ones for ASCII */
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90 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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91 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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92 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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93 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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94 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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95 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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96 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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97 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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98 /* 1 x 8 for Dimension-1 official Mule charsets */
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99 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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100 /* 0x90 - 0x9d are Dimension-2 official */
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101 /* 0x9e is Dimension-1 private */
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102 /* 0x9f is Dimension-2 private */
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103 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4
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104 };
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105
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106 Lisp_Object Qcharsetp;
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107
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108 /* Qdoc_string, Qdimension, Qchars defined in general.c */
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109 Lisp_Object Qregistry, Qfinal, Qgraphic;
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110 Lisp_Object Qdirection;
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111 Lisp_Object Qreverse_direction_charset;
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112 Lisp_Object Qccl_program;
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113
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114 Lisp_Object Qascii, Qcontrol_1, Qlatin_1, Qlatin_2, Qlatin_3, Qlatin_4, Qlatin_5,
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115 Qthai, Qarabic, Qhebrew, Qgreek, Qcyrillic,
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116
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117 Qjapanese_jisx0201_kana,
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118 Qjapanese_jisx0201_roman,
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119 Qjapanese_jisx0208_1978,
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120 Qjapanese_jisx0208,
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121 Qjapanese_jisx0212,
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122
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123 Qchinese_gb, Qchinese_big5_1, Qchinese_big5_2,
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124 Qchinese_cns11643_1, Qchinese_cns11643_2,
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125
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126 Qkorean_ksc5601, Qcomposite;
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127
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128 Lisp_Object Ql2r, Qr2l;
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129
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130 Lisp_Object Vcharset_hashtable;
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131
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132 static Bufbyte next_allocated_1_byte_leading_byte;
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133 static Bufbyte next_allocated_2_byte_leading_byte;
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134
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135 /* Composite characters are characters constructed by overstriking two
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136 or more regular characters.
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137
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138 1) The old Mule implementation involves storing composite characters
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139 in a buffer as a tag followed by all of the actual characters
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140 used to make up the composite character. I think this is a bad
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141 idea; it greatly complicates code that wants to handle strings
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142 one character at a time because it has to deal with the possibility
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143 of great big ungainly characters. It's much more reasonable to
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144 simply store an index into a table of composite characters.
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145
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146 2) The current implementation only allows for 16,384 separate
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147 composite characters over the lifetime of the XEmacs process.
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148 This could become a potential problem if the user
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149 edited lots of different files that use composite characters.
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150 Due to FSF bogosity, increasing the number of allowable
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151 composite characters under Mule would decrease the number
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152 of possible faces that can exist. Mule already has shrunk
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153 this to 2048, and further shrinkage would become uncomfortable.
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154 No such problems exist in XEmacs.
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155
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156 Composite characters could be represented as 0x80 C1 C2 C3,
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157 where each C[1-3] is in the range 0xA0 - 0xFF. This allows
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158 for slightly under 2^20 (one million) composite characters
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159 over the XEmacs process lifetime, and you only need to
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160 increase the size of a Mule character from 19 to 21 bits.
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161 Or you could use 0x80 C1 C2 C3 C4, allowing for about
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162 85 million (slightly over 2^26) composite characters. */
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163
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164
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165 /************************************************************************/
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166 /* Basic Emchar functions */
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167 /************************************************************************/
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168
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169 /* Convert a non-ASCII Mule character C into a one-character Mule-encoded
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170 string in STR. Returns the number of bytes stored.
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171 Do not call this directly. Use the macro set_charptr_emchar() instead.
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172 */
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173
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174 Bytecount
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175 non_ascii_set_charptr_emchar (Bufbyte *str, Emchar c)
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176 {
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177 Bufbyte *p;
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178 Bufbyte lb;
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179 int c1, c2;
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180 Lisp_Object charset;
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181
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182 p = str;
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183 BREAKUP_CHAR (c, charset, c1, c2);
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184 lb = CHAR_LEADING_BYTE (c);
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185 if (LEADING_BYTE_PRIVATE_P (lb))
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186 *p++ = PRIVATE_LEADING_BYTE_PREFIX (lb);
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187 *p++ = lb;
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188 if (EQ (charset, Vcharset_control_1))
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189 c1 += 0x20;
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190 *p++ = c1 | 0x80;
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191 if (c2)
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192 *p++ = c2 | 0x80;
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193
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194 return (p - str);
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195 }
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196
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197 /* Return the first character from a Mule-encoded string in STR,
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198 assuming it's non-ASCII. Do not call this directly.
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199 Use the macro charptr_emchar() instead. */
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200
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201 Emchar
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202 non_ascii_charptr_emchar (CONST Bufbyte *str)
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203 {
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204 Bufbyte i0 = *str, i1, i2 = 0;
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205 Lisp_Object charset;
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206
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207 if (i0 == LEADING_BYTE_CONTROL_1)
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208 return (Emchar) (*++str - 0x20);
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209
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210 if (LEADING_BYTE_PREFIX_P (i0))
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211 i0 = *++str;
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212
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213 i1 = *++str & 0x7F;
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214
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215 charset = CHARSET_BY_LEADING_BYTE (i0);
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216 if (XCHARSET_DIMENSION (charset) == 2)
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217 i2 = *++str & 0x7F;
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218
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219 return MAKE_CHAR (charset, i1, i2);
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220 }
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221
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222 /* Return whether CH is a valid Emchar, assuming it's non-ASCII.
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223 Do not call this directly. Use the macro valid_char_p() instead. */
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224
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225 int
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226 non_ascii_valid_char_p (Emchar ch)
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227 {
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228 int f1, f2, f3;
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229
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230 /* Must have only lowest 19 bits set */
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231 if (ch & ~0x7FFFF)
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232 return 0;
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233
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234 f1 = CHAR_FIELD1 (ch);
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235 f2 = CHAR_FIELD2 (ch);
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236 f3 = CHAR_FIELD3 (ch);
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237
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238 if (f1 == 0)
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239 {
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240 Lisp_Object charset;
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241
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242 if (f2 < MIN_CHAR_FIELD2_OFFICIAL ||
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243 (f2 > MAX_CHAR_FIELD2_OFFICIAL && f2 < MIN_CHAR_FIELD2_PRIVATE) ||
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244 f2 > MAX_CHAR_FIELD2_PRIVATE)
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245 return 0;
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246 if (f3 < 0x20)
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247 return 0;
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248
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249 if (f3 != 0x20 && f3 != 0x7F)
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250 return 1;
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251
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252 /*
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253 NOTE: This takes advantage of the fact that
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254 FIELD2_TO_OFFICIAL_LEADING_BYTE and
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255 FIELD2_TO_PRIVATE_LEADING_BYTE are the same.
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256 */
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257 charset = CHARSET_BY_LEADING_BYTE (f2 + FIELD2_TO_OFFICIAL_LEADING_BYTE);
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258 return (XCHARSET_CHARS (charset) == 96);
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259 }
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260 else
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261 {
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262 Lisp_Object charset;
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263
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264 if (f1 < MIN_CHAR_FIELD1_OFFICIAL ||
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265 (f1 > MAX_CHAR_FIELD1_OFFICIAL && f1 < MIN_CHAR_FIELD1_PRIVATE) ||
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266 f1 > MAX_CHAR_FIELD1_PRIVATE)
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267 return 0;
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268 if (f2 < 0x20 || f3 < 0x20)
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269 return 0;
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270
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271 if (f1 + FIELD1_TO_OFFICIAL_LEADING_BYTE == LEADING_BYTE_COMPOSITE)
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272 {
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273 if (UNBOUNDP (Fgethash (make_int (ch),
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274 Vcomposite_char_char2string_hashtable,
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275 Qunbound)))
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276 return 0;
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277 return 1;
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278 }
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279
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280 if (f2 != 0x20 && f2 != 0x7F && f3 != 0x20 && f3 != 0x7F)
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281 return 1;
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282
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283 if (f1 <= MAX_CHAR_FIELD1_OFFICIAL)
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284 charset =
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285 CHARSET_BY_LEADING_BYTE (f1 + FIELD1_TO_OFFICIAL_LEADING_BYTE);
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286 else
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287 charset =
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288 CHARSET_BY_LEADING_BYTE (f1 + FIELD1_TO_PRIVATE_LEADING_BYTE);
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289
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290 return (XCHARSET_CHARS (charset) == 96);
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291 }
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292 }
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293
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294
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295 /************************************************************************/
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296 /* Basic string functions */
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297 /************************************************************************/
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298
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299 /* Copy the character pointed to by PTR into STR, assuming it's
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300 non-ASCII. Do not call this directly. Use the macro
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301 charptr_copy_char() instead. */
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302
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303 Bytecount
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304 non_ascii_charptr_copy_char (CONST Bufbyte *ptr, Bufbyte *str)
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305 {
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306 Bufbyte *strptr = str;
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307 *strptr = *ptr++;
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308 switch (REP_BYTES_BY_FIRST_BYTE (*strptr))
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309 {
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310 /* Notice fallthrough. */
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311 case 4: *++strptr = *ptr++;
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312 case 3: *++strptr = *ptr++;
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313 case 2: *++strptr = *ptr;
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314 break;
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315 default:
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316 abort ();
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317 }
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318 return strptr + 1 - str;
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319 }
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320
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321
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322 /************************************************************************/
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323 /* streams of Emchars */
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324 /************************************************************************/
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325
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326 /* Treat a stream as a stream of Emchar's rather than a stream of bytes.
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327 The functions below are not meant to be called directly; use
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328 the macros in insdel.h. */
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329
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330 Emchar
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331 Lstream_get_emchar_1 (Lstream *stream, int ch)
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332 {
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333 Bufbyte str[MAX_EMCHAR_LEN];
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334 Bufbyte *strptr = str;
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335
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336 str[0] = (Bufbyte) ch;
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337 switch (REP_BYTES_BY_FIRST_BYTE (ch))
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338 {
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339 /* Notice fallthrough. */
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340 case 4:
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341 ch = Lstream_getc (stream);
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342 assert (ch >= 0);
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343 *++strptr = (Bufbyte) ch;
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344 case 3:
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345 ch = Lstream_getc (stream);
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346 assert (ch >= 0);
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347 *++strptr = (Bufbyte) ch;
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348 case 2:
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349 ch = Lstream_getc (stream);
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350 assert (ch >= 0);
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351 *++strptr = (Bufbyte) ch;
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352 break;
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353 default:
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354 abort ();
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355 }
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356 return charptr_emchar (str);
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357 }
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358
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359 int
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360 Lstream_fput_emchar (Lstream *stream, Emchar ch)
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361 {
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362 Bufbyte str[MAX_EMCHAR_LEN];
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363 Bytecount len = set_charptr_emchar (str, ch);
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364 return Lstream_write (stream, str, len);
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365 }
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366
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367 void
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368 Lstream_funget_emchar (Lstream *stream, Emchar ch)
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369 {
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370 Bufbyte str[MAX_EMCHAR_LEN];
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371 Bytecount len = set_charptr_emchar (str, ch);
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372 Lstream_unread (stream, str, len);
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373 }
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374
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375
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376 /************************************************************************/
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377 /* charset object */
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378 /************************************************************************/
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379
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380 static Lisp_Object mark_charset (Lisp_Object, void (*) (Lisp_Object));
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381 static void print_charset (Lisp_Object, Lisp_Object, int);
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382 DEFINE_LRECORD_IMPLEMENTATION ("charset", charset,
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383 mark_charset, print_charset, 0, 0, 0,
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384 struct Lisp_Charset);
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385
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386 static Lisp_Object
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387 mark_charset (Lisp_Object obj, void (*markobj) (Lisp_Object))
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|
388 {
|
|
|
389 struct Lisp_Charset *cs = XCHARSET (obj);
|
|
|
390
|
|
|
391 (markobj) (cs->doc_string);
|
|
|
392 (markobj) (cs->registry);
|
|
|
393 (markobj) (cs->ccl_program);
|
|
|
394 return cs->name;
|
|
|
395 }
|
|
|
396
|
|
|
397 static void
|
|
|
398 print_charset (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
399 {
|
|
|
400 struct Lisp_Charset *cs = XCHARSET (obj);
|
|
|
401 char buf[200];
|
|
|
402
|
|
|
403 if (print_readably)
|
|
|
404 error ("printing unreadable object #<charset %s 0x%x>",
|
|
|
405 string_data (XSYMBOL (CHARSET_NAME (cs))->name),
|
|
|
406 cs->header.uid);
|
|
|
407
|
|
|
408 write_c_string ("#<charset ", printcharfun);
|
|
|
409 print_internal (CHARSET_NAME (cs), printcharfun, 0);
|
|
|
410 write_c_string (" ", printcharfun);
|
|
|
411 print_internal (CHARSET_DOC_STRING (cs), printcharfun, 1);
|
|
|
412 sprintf (buf, " %s %s cols=%d g%d final='%c' reg=",
|
|
|
413 CHARSET_TYPE (cs) == CHARSET_TYPE_94 ? "94" :
|
|
|
414 CHARSET_TYPE (cs) == CHARSET_TYPE_96 ? "96" :
|
|
|
415 CHARSET_TYPE (cs) == CHARSET_TYPE_94X94 ? "94x94" :
|
|
|
416 "96x96",
|
|
|
417 CHARSET_DIRECTION (cs) == CHARSET_LEFT_TO_RIGHT ? "l2r" : "r2l",
|
|
|
418 CHARSET_COLUMNS (cs),
|
|
|
419 CHARSET_GRAPHIC (cs),
|
|
|
420 CHARSET_FINAL (cs));
|
|
|
421 write_c_string (buf, printcharfun);
|
|
|
422 print_internal (CHARSET_REGISTRY (cs), printcharfun, 0);
|
|
|
423 sprintf (buf, " 0x%x>", cs->header.uid);
|
|
|
424 write_c_string (buf, printcharfun);
|
|
|
425 }
|
|
|
426
|
|
|
427 /* Make a new charset. */
|
|
|
428
|
|
|
429 static Lisp_Object
|
|
|
430 make_charset (Lisp_Object name, Bufbyte leading_byte, unsigned char rep_bytes,
|
|
|
431 unsigned char type, unsigned char columns, unsigned char graphic,
|
|
|
432 Bufbyte final, unsigned char direction, Lisp_Object doc,
|
|
|
433 Lisp_Object reg)
|
|
|
434 {
|
|
|
435 struct Lisp_Charset *cs;
|
|
|
436 Lisp_Object obj = Qnil;
|
|
|
437
|
|
|
438 cs = (struct Lisp_Charset *) alloc_lcrecord (sizeof (struct Lisp_Charset),
|
|
|
439 lrecord_charset);
|
|
|
440 XSETCHARSET (obj, cs);
|
|
|
441
|
|
|
442 CHARSET_NAME (cs) = name;
|
|
|
443 CHARSET_LEADING_BYTE (cs) = leading_byte;
|
|
|
444 CHARSET_REP_BYTES (cs) = rep_bytes;
|
|
|
445 CHARSET_DIRECTION (cs) = direction;
|
|
|
446 CHARSET_TYPE (cs) = type;
|
|
|
447 CHARSET_COLUMNS (cs) = columns;
|
|
|
448 CHARSET_GRAPHIC (cs) = graphic;
|
|
|
449 CHARSET_FINAL (cs) = final;
|
|
|
450 CHARSET_DOC_STRING (cs) = doc;
|
|
|
451 CHARSET_REGISTRY (cs) = reg;
|
|
|
452 CHARSET_CCL_PROGRAM (cs) = Qnil;
|
|
|
453 CHARSET_REVERSE_DIRECTION_CHARSET (cs) = Qnil;
|
|
|
454
|
|
|
455 if (final)
|
|
|
456 {
|
|
|
457 /* some charsets do not have final characters. This includes
|
|
|
458 ASCII, Control-1, Composite, and the two faux private
|
|
|
459 charsets. */
|
|
|
460 assert (NILP (charset_by_attributes[type][final][direction]));
|
|
|
461 charset_by_attributes[type][final][direction] = obj;
|
|
|
462 }
|
|
|
463
|
|
|
464 assert (NILP (charset_by_leading_byte[leading_byte - 128]));
|
|
|
465 charset_by_leading_byte[leading_byte - 128] = obj;
|
|
|
466 if (leading_byte < 0xA0)
|
|
|
467 /* official leading byte */
|
|
|
468 rep_bytes_by_first_byte[leading_byte] = rep_bytes;
|
|
|
469
|
|
|
470 /* Some charsets are "faux" and don't have names or really exist at
|
|
|
471 all except in the leading-byte table. */
|
|
|
472 if (!NILP (name))
|
|
|
473 Fputhash (name, obj, Vcharset_hashtable);
|
|
|
474 return obj;
|
|
|
475 }
|
|
|
476
|
|
|
477 static int
|
|
|
478 get_unallocated_leading_byte (int dimension)
|
|
|
479 {
|
|
|
480 int lb;
|
|
|
481
|
|
|
482 if (dimension == 1)
|
|
|
483 {
|
|
|
484 if (next_allocated_1_byte_leading_byte > MAX_LEADING_BYTE_PRIVATE_1)
|
|
|
485 lb = 0;
|
|
|
486 else
|
|
|
487 lb = next_allocated_1_byte_leading_byte++;
|
|
|
488 }
|
|
|
489 else
|
|
|
490 {
|
|
|
491 if (next_allocated_2_byte_leading_byte > MAX_LEADING_BYTE_PRIVATE_2)
|
|
|
492 lb = 0;
|
|
|
493 else
|
|
|
494 lb = next_allocated_2_byte_leading_byte++;
|
|
|
495 }
|
|
|
496
|
|
|
497 if (!lb)
|
|
|
498 signal_simple_error
|
|
|
499 ("No more character sets free for this dimension",
|
|
|
500 make_int (dimension));
|
|
|
501
|
|
|
502 return lb;
|
|
|
503 }
|
|
|
504
|
|
|
505
|
|
|
506 /************************************************************************/
|
|
|
507 /* Basic charset Lisp functions */
|
|
|
508 /************************************************************************/
|
|
|
509
|
|
|
510 DEFUN ("charsetp", Fcharsetp, 1, 1, 0, /*
|
|
|
511 Return non-nil if OBJECT is a charset.
|
|
|
512 */
|
|
|
513 (object))
|
|
|
514 {
|
|
|
515 return (CHARSETP (object) ? Qt : Qnil);
|
|
|
516 }
|
|
|
517
|
|
|
518 DEFUN ("find-charset", Ffind_charset, 1, 1, 0, /*
|
|
|
519 Retrieve the charset of the given name.
|
|
|
520 If CHARSET-OR-NAME is a charset object, it is simply returned.
|
|
|
521 Otherwise, CHARSET-OR-NAME should be a symbol. If there is no such charset,
|
|
|
522 nil is returned. Otherwise the associated charset object is returned.
|
|
|
523 */
|
|
|
524 (charset_or_name))
|
|
|
525 {
|
|
|
526 if (CHARSETP (charset_or_name))
|
|
|
527 return charset_or_name;
|
|
|
528 CHECK_SYMBOL (charset_or_name);
|
|
|
529
|
|
|
530 return Fgethash (charset_or_name, Vcharset_hashtable, Qnil);
|
|
|
531 }
|
|
|
532
|
|
|
533 DEFUN ("get-charset", Fget_charset, 1, 1, 0, /*
|
|
|
534 Retrieve the charset of the given name.
|
|
|
535 Same as `find-charset' except an error is signalled if there is no such
|
|
|
536 charset instead of returning nil.
|
|
|
537 */
|
|
|
538 (name))
|
|
|
539 {
|
|
|
540 Lisp_Object charset = Ffind_charset (name);
|
|
|
541
|
|
|
542 if (NILP (charset))
|
|
|
543 signal_simple_error ("No such charset", name);
|
|
|
544 return charset;
|
|
|
545 }
|
|
|
546
|
|
|
547 /* We store the charsets in hash tables with the names as the key and the
|
|
|
548 actual charset object as the value. Occasionally we need to use them
|
|
|
549 in a list format. These routines provide us with that. */
|
|
|
550 struct charset_list_closure
|
|
|
551 {
|
|
|
552 Lisp_Object *charset_list;
|
|
|
553 };
|
|
|
554
|
|
|
555 static void
|
|
|
556 add_charset_to_list_mapper (CONST void *hash_key, void *hash_contents,
|
|
|
557 void *charset_list_closure)
|
|
|
558 {
|
|
|
559 /* This function can GC */
|
|
|
560 Lisp_Object key, contents;
|
|
|
561 Lisp_Object *charset_list;
|
|
|
562 struct charset_list_closure *chcl = charset_list_closure;
|
|
|
563 CVOID_TO_LISP (key, hash_key);
|
|
|
564 VOID_TO_LISP (contents, hash_contents);
|
|
|
565 charset_list = chcl->charset_list;
|
|
|
566
|
|
|
567 *charset_list = Fcons (XCHARSET_NAME (contents), *charset_list);
|
|
|
568 }
|
|
|
569
|
|
|
570 DEFUN ("charset-list", Fcharset_list, 0, 0, 0, /*
|
|
|
571 Return a list of the names of all defined charsets.
|
|
|
572 */
|
|
|
573 ())
|
|
|
574 {
|
|
|
575 Lisp_Object charset_list = Qnil;
|
|
|
576 struct gcpro gcpro1;
|
|
|
577 struct charset_list_closure charset_list_closure;
|
|
|
578
|
|
|
579 GCPRO1 (charset_list);
|
|
|
580 charset_list_closure.charset_list = &charset_list;
|
|
|
581 elisp_maphash (add_charset_to_list_mapper, Vcharset_hashtable,
|
|
|
582 &charset_list_closure);
|
|
|
583 UNGCPRO;
|
|
|
584
|
|
|
585 return charset_list;
|
|
|
586 }
|
|
|
587
|
|
|
588 DEFUN ("charset-name", Fcharset_name, 1, 1, 0, /*
|
|
|
589 Return the name of the given charset.
|
|
|
590 */
|
|
|
591 (charset))
|
|
|
592 {
|
|
|
593 return (XCHARSET_NAME (Fget_charset (charset)));
|
|
|
594 }
|
|
|
595
|
|
|
596 DEFUN ("make-charset", Fmake_charset, 3, 3, 0, /*
|
|
|
597 Define a new character set.
|
|
|
598 This function is for use with Mule support.
|
|
|
599 NAME is a symbol, the name by which the character set is normally referred.
|
|
|
600 DOC-STRING is a string describing the character set.
|
|
|
601 PROPS is a property list, describing the specific nature of the
|
|
|
602 character set. Recognized properties are:
|
|
|
603
|
|
|
604 'registry A regular expression matching the font registry field for
|
|
|
605 this character set.
|
|
|
606 'dimension Number of octets used to index a character in this charset.
|
|
|
607 Either 1 or 2. Defaults to 1.
|
|
|
608 'columns Number of columns used to display a character in this charset.
|
|
|
609 Only used in TTY mode. (Under X, the actual width of a
|
|
|
610 character can be derived from the font used to display the
|
|
|
611 characters.) If unspecified, defaults to the dimension
|
|
|
612 (this is almost always the correct value).
|
|
|
613 'chars Number of characters in each dimension (94 or 96).
|
|
|
614 Defaults to 94. Note that if the dimension is 2, the
|
|
|
615 character set thus described is 94x94 or 96x96.
|
|
|
616 'final Final byte of ISO 2022 escape sequence. Must be
|
|
|
617 supplied. Each combination of (DIMENSION, CHARS) defines a
|
|
|
618 separate namespace for final bytes. Note that ISO
|
|
|
619 2022 restricts the final byte to the range
|
|
|
620 0x30 - 0x7E if dimension == 1, and 0x30 - 0x5F if
|
|
|
621 dimension == 2. Note also that final bytes in the range
|
|
|
622 0x30 - 0x3F are reserved for user-defined (not official)
|
|
|
623 character sets.
|
|
|
624 'graphic 0 (use left half of font on output) or 1 (use right half
|
|
|
625 of font on output). Defaults to 0. For example, for
|
|
|
626 a font whose registry is ISO8859-1, the left half
|
|
|
627 (octets 0x20 - 0x7F) is the `ascii' character set, while
|
|
|
628 the right half (octets 0xA0 - 0xFF) is the `latin-1'
|
|
|
629 character set. With 'graphic set to 0, the octets
|
|
|
630 will have their high bit cleared; with it set to 1,
|
|
|
631 the octets will have their high bit set.
|
|
|
632 'direction 'l2r (left-to-right) or 'r2l (right-to-left).
|
|
|
633 Defaults to 'l2r.
|
|
|
634 'ccl-program A compiled CCL program used to convert a character in
|
|
|
635 this charset into an index into the font. This is in
|
|
|
636 addition to the 'graphic property. The CCL program
|
|
|
637 is passed the octets of the character, with the high
|
|
|
638 bit cleared and set depending upon whether the value
|
|
|
639 of the 'graphic property is 0 or 1.
|
|
|
640 */
|
|
|
641 (name, doc_string, props))
|
|
|
642 {
|
|
|
643 int lb, dimension = 1, chars = 94, graphic = 0, final = 0, columns = -1;
|
|
|
644 int direction = CHARSET_LEFT_TO_RIGHT;
|
|
|
645 int type;
|
|
|
646 Lisp_Object registry = Qnil;
|
|
|
647 Lisp_Object charset;
|
|
|
648 Lisp_Object rest, keyword, value;
|
|
|
649 Lisp_Object ccl_program = Qnil;
|
|
|
650
|
|
|
651 CHECK_SYMBOL (name);
|
|
|
652 if (!NILP (doc_string))
|
|
|
653 CHECK_STRING (doc_string);
|
|
|
654
|
|
|
655 charset = Ffind_charset (name);
|
|
|
656 if (!NILP (charset))
|
|
|
657 signal_simple_error ("Cannot redefine existing charset", name);
|
|
|
658
|
|
|
659 EXTERNAL_PROPERTY_LIST_LOOP (rest, keyword, value, props)
|
|
|
660 {
|
|
|
661 if (EQ (keyword, Qdimension))
|
|
|
662 {
|
|
|
663 CHECK_INT (value);
|
|
|
664 dimension = XINT (value);
|
|
|
665 if (dimension < 1 || dimension > 2)
|
|
|
666 signal_simple_error ("Invalid value for 'dimension", value);
|
|
|
667 }
|
|
|
668
|
|
|
669 else if (EQ (keyword, Qchars))
|
|
|
670 {
|
|
|
671 CHECK_INT (value);
|
|
|
672 chars = XINT (value);
|
|
|
673 if (chars != 94 && chars != 96)
|
|
|
674 signal_simple_error ("Invalid value for 'chars", value);
|
|
|
675 }
|
|
|
676
|
|
|
677 else if (EQ (keyword, Qcolumns))
|
|
|
678 {
|
|
|
679 CHECK_INT (value);
|
|
|
680 columns = XINT (value);
|
|
|
681 if (columns != 1 && columns != 2)
|
|
|
682 signal_simple_error ("Invalid value for 'columns", value);
|
|
|
683 }
|
|
|
684
|
|
|
685 else if (EQ (keyword, Qgraphic))
|
|
|
686 {
|
|
|
687 CHECK_INT (value);
|
|
|
688 graphic = XINT (value);
|
|
|
689 if (graphic < 0 || graphic > 1)
|
|
|
690 signal_simple_error ("Invalid value for 'graphic", value);
|
|
|
691 }
|
|
|
692
|
|
|
693 else if (EQ (keyword, Qregistry))
|
|
|
694 {
|
|
|
695 CHECK_STRING (value);
|
|
|
696 registry = value;
|
|
|
697 }
|
|
|
698
|
|
|
699 else if (EQ (keyword, Qdirection))
|
|
|
700 {
|
|
|
701 if (EQ (value, Ql2r))
|
|
|
702 direction = CHARSET_LEFT_TO_RIGHT;
|
|
|
703 else if (EQ (value, Qr2l))
|
|
|
704 direction = CHARSET_RIGHT_TO_LEFT;
|
|
|
705 else
|
|
|
706 signal_simple_error ("Invalid value for 'direction", value);
|
|
|
707 }
|
|
|
708
|
|
|
709 else if (EQ (keyword, Qfinal))
|
|
|
710 {
|
|
|
711 CHECK_CHAR_COERCE_INT (value);
|
|
|
712 final = XCHAR (value);
|
|
|
713 if (final < '0' || final > '~')
|
|
|
714 signal_simple_error ("Invalid value for 'final", value);
|
|
|
715 }
|
|
|
716
|
|
|
717 else if (EQ (keyword, Qccl_program))
|
|
|
718 {
|
|
|
719 CHECK_VECTOR (value);
|
|
|
720 ccl_program = value;
|
|
|
721 }
|
|
|
722
|
|
|
723 else
|
|
|
724 signal_simple_error ("Unrecognized property", keyword);
|
|
|
725 }
|
|
|
726
|
|
|
727 if (!final)
|
|
|
728 error ("'final must be specified");
|
|
|
729 if (dimension == 2 && final > 0x5F)
|
|
|
730 signal_simple_error
|
|
|
731 ("Final must be in the range 0x30 - 0x5F for dimension == 2",
|
|
|
732 make_char (final));
|
|
|
733
|
|
|
734 if (dimension == 1)
|
|
|
735 type = (chars == 94) ? CHARSET_TYPE_94 : CHARSET_TYPE_96;
|
|
|
736 else
|
|
|
737 type = (chars == 94) ? CHARSET_TYPE_94X94 : CHARSET_TYPE_96X96;
|
|
|
738
|
|
|
739 if (!NILP (CHARSET_BY_ATTRIBUTES (type, final, CHARSET_LEFT_TO_RIGHT)) ||
|
|
|
740 !NILP (CHARSET_BY_ATTRIBUTES (type, final, CHARSET_RIGHT_TO_LEFT)))
|
|
|
741 error
|
|
|
742 ("Character set already defined for this DIMENSION/CHARS/FINAL combo");
|
|
|
743
|
|
|
744 lb = get_unallocated_leading_byte (dimension);
|
|
|
745
|
|
|
746 if (NILP (doc_string))
|
|
|
747 doc_string = build_string ("");
|
|
|
748
|
|
|
749 if (NILP (registry))
|
|
|
750 registry = build_string ("");
|
|
|
751
|
|
|
752 if (columns == -1)
|
|
|
753 columns = dimension;
|
|
|
754 charset = make_charset (name, lb, dimension + 2, type, columns, graphic,
|
|
|
755 final, direction, doc_string, registry);
|
|
|
756 if (!NILP (ccl_program))
|
|
|
757 XCHARSET_CCL_PROGRAM (charset) = ccl_program;
|
|
|
758 return charset;
|
|
|
759 }
|
|
|
760
|
|
|
761 DEFUN ("make-reverse-direction-charset",
|
|
|
762 Fmake_reverse_direction_charset, 2, 2, 0, /*
|
|
|
763 Make a charset equivalent to CHARSET but which goes in the opposite direction.
|
|
|
764 NEW-NAME is the name of the new charset. Return the new charset.
|
|
|
765 */
|
|
|
766 (charset, new_name))
|
|
|
767 {
|
|
|
768 Lisp_Object new_charset = Qnil;
|
|
|
769 int lb, dimension, columns, graphic, final;
|
|
|
770 int direction, type;
|
|
|
771 Lisp_Object registry, doc_string;
|
|
|
772 struct Lisp_Charset *cs;
|
|
|
773
|
|
|
774 charset = Fget_charset (charset);
|
|
|
775 if (!NILP (XCHARSET_REVERSE_DIRECTION_CHARSET (charset)))
|
|
|
776 signal_simple_error ("Charset already has reverse-direction charset",
|
|
|
777 charset);
|
|
|
778
|
|
|
779 CHECK_SYMBOL (new_name);
|
|
|
780 if (!NILP (Ffind_charset (new_name)))
|
|
|
781 signal_simple_error ("Cannot redefine existing charset", new_name);
|
|
|
782
|
|
|
783 cs = XCHARSET (charset);
|
|
|
784
|
|
|
785 type = CHARSET_TYPE (cs);
|
|
|
786 columns = CHARSET_COLUMNS (cs);
|
|
|
787 dimension = CHARSET_DIMENSION (cs);
|
|
|
788 lb = get_unallocated_leading_byte (dimension);
|
|
|
789
|
|
|
790 graphic = CHARSET_GRAPHIC (cs);
|
|
|
791 final = CHARSET_FINAL (cs);
|
|
|
792 direction = CHARSET_RIGHT_TO_LEFT;
|
|
|
793 if (CHARSET_DIRECTION (cs) == CHARSET_RIGHT_TO_LEFT)
|
|
|
794 direction = CHARSET_LEFT_TO_RIGHT;
|
|
|
795 doc_string = CHARSET_DOC_STRING (cs);
|
|
|
796 registry = CHARSET_REGISTRY (cs);
|
|
|
797
|
|
|
798 new_charset = make_charset (new_name, lb, dimension + 2, type, columns,
|
|
|
799 graphic, final, direction, doc_string, registry);
|
|
|
800
|
|
|
801 CHARSET_REVERSE_DIRECTION_CHARSET (cs) = new_charset;
|
|
|
802 XCHARSET_REVERSE_DIRECTION_CHARSET (new_charset) = charset;
|
|
|
803
|
|
|
804 return new_charset;
|
|
|
805 }
|
|
|
806
|
|
|
807 /* #### The defsubr for this is commented out at the moment but no
|
|
|
808 reason why is given. */
|
|
|
809 #if 0
|
|
|
810 DEFUN ("charset-reverse-direction-charset",
|
|
|
811 Fcharset_reverse_direction_charset, 1, 1, 0, /*
|
|
|
812 Return the reverse-direction charset parallel to CHARSET, if any.
|
|
|
813 This is the charset with the same properties (in particular, the same
|
|
|
814 dimension, number of characters per dimension, and final byte) as
|
|
|
815 CHARSET but whose characters are displayed in the opposite direction.
|
|
|
816 */
|
|
|
817 (charset))
|
|
|
818 {
|
|
|
819 charset = Fget_charset (charset);
|
|
|
820 return XCHARSET_REVERSE_DIRECTION_CHARSET (charset);
|
|
|
821 }
|
|
|
822 #endif
|
|
|
823
|
|
|
824 DEFUN ("charset-from-attributes", Fcharset_from_attributes, 3, 4, 0, /*
|
|
|
825 Return a charset with the given DIMENSION, CHARS, FINAL, and DIRECTION.
|
|
|
826 If DIRECTION is omitted, both directions will be checked (left-to-right
|
|
|
827 will be returned if character sets exist for both directions).
|
|
|
828 */
|
|
|
829 (dimension, chars, final, direction))
|
|
|
830 {
|
|
|
831 int dm, ch, fi, di = -1;
|
|
|
832 int type;
|
|
|
833 Lisp_Object obj = Qnil;
|
|
|
834
|
|
|
835 CHECK_INT (dimension);
|
|
|
836 dm = XINT (dimension);
|
|
|
837 if (dm < 1 || dm > 2)
|
|
|
838 signal_simple_error ("Invalid value for DIMENSION", dimension);
|
|
|
839
|
|
|
840 CHECK_INT (chars);
|
|
|
841 ch = XINT (chars);
|
|
|
842 if (ch != 94 && ch != 96)
|
|
|
843 signal_simple_error ("Invalid value for CHARS", chars);
|
|
|
844
|
|
|
845 CHECK_CHAR_COERCE_INT (final);
|
|
|
846 fi = XCHAR (final);
|
|
|
847 if (fi < '0' || fi > '~')
|
|
|
848 signal_simple_error ("Invalid value for FINAL", final);
|
|
|
849
|
|
|
850 if (EQ (direction, Ql2r))
|
|
|
851 di = CHARSET_LEFT_TO_RIGHT;
|
|
|
852 else if (EQ (direction, Qr2l))
|
|
|
853 di = CHARSET_RIGHT_TO_LEFT;
|
|
|
854 else if (!NILP (direction))
|
|
|
855 signal_simple_error ("Invalid value for DIRECTION", direction);
|
|
|
856
|
|
|
857 if (dm == 2 && fi > 0x5F)
|
|
|
858 signal_simple_error
|
|
|
859 ("Final must be in the range 0x30 - 0x5F for dimension == 2", final);
|
|
|
860
|
|
|
861 if (dm == 1)
|
|
|
862 type = (ch == 94) ? CHARSET_TYPE_94 : CHARSET_TYPE_96;
|
|
|
863 else
|
|
|
864 type = (ch == 94) ? CHARSET_TYPE_94X94 : CHARSET_TYPE_96X96;
|
|
|
865
|
|
|
866 if (di == -1)
|
|
|
867 {
|
|
|
868 obj = CHARSET_BY_ATTRIBUTES (type, fi, CHARSET_LEFT_TO_RIGHT);
|
|
|
869 if (NILP (obj))
|
|
|
870 obj = CHARSET_BY_ATTRIBUTES (type, fi, CHARSET_RIGHT_TO_LEFT);
|
|
|
871 }
|
|
|
872 else
|
|
|
873 obj = CHARSET_BY_ATTRIBUTES (type, fi, di);
|
|
|
874
|
|
|
875 if (CHARSETP (obj))
|
|
|
876 return XCHARSET_NAME (obj);
|
|
|
877 return obj;
|
|
|
878 }
|
|
|
879
|
|
|
880 DEFUN ("charset-doc-string", Fcharset_doc_string, 1, 1, 0, /*
|
|
|
881 Return doc string of CHARSET.
|
|
|
882 */
|
|
|
883 (charset))
|
|
|
884 {
|
|
|
885 return XCHARSET_DOC_STRING (Fget_charset (charset));
|
|
|
886 }
|
|
|
887
|
|
|
888 DEFUN ("charset-dimension", Fcharset_dimension, 1, 1, 0, /*
|
|
|
889 Return dimension of CHARSET.
|
|
|
890 */
|
|
|
891 (charset))
|
|
|
892 {
|
|
|
893 return make_int (XCHARSET_DIMENSION (Fget_charset (charset)));
|
|
|
894 }
|
|
|
895
|
|
|
896 DEFUN ("charset-property", Fcharset_property, 2, 2, 0, /*
|
|
|
897 Return property PROP of CHARSET.
|
|
|
898 Recognized properties are those listed in `make-charset', as well as
|
|
|
899 'name and 'doc-string.
|
|
|
900 */
|
|
|
901 (charset, prop))
|
|
|
902 {
|
|
|
903 struct Lisp_Charset *cs;
|
|
|
904
|
|
|
905 charset = Fget_charset (charset);
|
|
|
906 cs = XCHARSET (charset);
|
|
|
907
|
|
|
908 CHECK_SYMBOL (prop);
|
|
|
909 if (EQ (prop, Qname)) return CHARSET_NAME (cs);
|
|
|
910 if (EQ (prop, Qdoc_string)) return CHARSET_DOC_STRING (cs);
|
|
|
911 if (EQ (prop, Qdimension)) return make_int (CHARSET_DIMENSION (cs));
|
|
|
912 if (EQ (prop, Qcolumns)) return make_int (CHARSET_COLUMNS (cs));
|
|
|
913 if (EQ (prop, Qgraphic)) return make_int (CHARSET_GRAPHIC (cs));
|
|
|
914 if (EQ (prop, Qfinal)) return make_char (CHARSET_FINAL (cs));
|
|
|
915 if (EQ (prop, Qchars)) return make_int (CHARSET_CHARS (cs));
|
|
|
916 if (EQ (prop, Qregistry)) return CHARSET_REGISTRY (cs);
|
|
|
917 if (EQ (prop, Qccl_program)) return CHARSET_CCL_PROGRAM (cs);
|
|
|
918 if (EQ (prop, Qdirection))
|
|
|
919 return (CHARSET_DIRECTION (cs) == CHARSET_LEFT_TO_RIGHT ? Ql2r : Qr2l);
|
|
|
920 if (EQ (prop, Qreverse_direction_charset))
|
|
|
921 {
|
|
|
922 Lisp_Object obj = CHARSET_REVERSE_DIRECTION_CHARSET (cs);
|
|
|
923 if (NILP (obj))
|
|
|
924 return Qnil;
|
|
|
925 else
|
|
|
926 return XCHARSET_NAME (obj);
|
|
|
927 }
|
|
|
928 signal_simple_error ("Unrecognized charset property name", prop);
|
|
|
929 return Qnil; /* not reached */
|
|
|
930 }
|
|
|
931
|
|
|
932 /* #### We need to figure out which properties we really want to
|
|
|
933 allow to be set. */
|
|
|
934
|
|
|
935 DEFUN ("set-charset-ccl-program", Fset_charset_ccl_program, 2, 2, 0, /*
|
|
|
936 Set the 'ccl-program property of CHARSET to CCL-PROGRAM.
|
|
|
937 */
|
|
|
938 (charset, ccl_program))
|
|
|
939 {
|
|
|
940 charset = Fget_charset (charset);
|
|
|
941 CHECK_VECTOR (ccl_program);
|
|
|
942 XCHARSET_CCL_PROGRAM (charset) = ccl_program;
|
|
|
943 return Qnil;
|
|
|
944 }
|
|
|
945
|
|
|
946 static void
|
|
|
947 invalidate_charset_font_caches (Lisp_Object charset)
|
|
|
948 {
|
|
|
949 /* Invalidate font cache entries for charset on all devices. */
|
|
|
950 Lisp_Object devcons, concons, hashtab;
|
|
|
951 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
952 {
|
|
|
953 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
954 hashtab = Fgethash (charset, d->charset_font_cache, Qunbound);
|
|
|
955 if (!UNBOUNDP (hashtab))
|
|
|
956 Fclrhash (hashtab);
|
|
|
957 }
|
|
|
958 }
|
|
|
959
|
|
|
960 /* Japanese folks may want to (set-charset-registry 'ascii "jisx0201") */
|
|
|
961 DEFUN ("set-charset-registry", Fset_charset_registry, 2, 2, 0, /*
|
|
|
962 Set the 'registry property of CHARSET to REGISTRY.
|
|
|
963 */
|
|
|
964 (charset, registry))
|
|
|
965 {
|
|
|
966 charset = Fget_charset (charset);
|
|
|
967 CHECK_STRING (registry);
|
|
|
968 XCHARSET_REGISTRY (charset) = registry;
|
|
|
969 invalidate_charset_font_caches (charset);
|
|
|
970 face_property_was_changed (Vdefault_face, Qfont, Qglobal);
|
|
|
971 return Qnil;
|
|
|
972 }
|
|
|
973
|
|
|
974
|
|
|
975 /************************************************************************/
|
|
|
976 /* Lisp primitives for working with characters */
|
|
|
977 /************************************************************************/
|
|
|
978
|
|
|
979 DEFUN ("make-char", Fmake_char, 2, 3, 0, /*
|
|
|
980 Make a multi-byte character from CHARSET and octets ARG1 and ARG2.
|
|
|
981 */
|
|
|
982 (charset, arg1, arg2))
|
|
|
983 {
|
|
|
984 struct Lisp_Charset *cs;
|
|
|
985 int a1, a2;
|
|
|
986 int lowlim, highlim;
|
|
|
987
|
|
|
988 charset = Fget_charset (charset);
|
|
|
989 cs = XCHARSET (charset);
|
|
|
990
|
|
|
991 if (EQ (charset, Vcharset_ascii)) lowlim = 0, highlim = 127;
|
|
|
992 else if (EQ (charset, Vcharset_control_1)) lowlim = 0, highlim = 31;
|
|
|
993 else if (CHARSET_CHARS (cs) == 94) lowlim = 33, highlim = 126;
|
|
|
994 else /* CHARSET_CHARS (cs) == 96) */ lowlim = 32, highlim = 127;
|
|
|
995
|
|
|
996 CHECK_INT (arg1);
|
|
|
997 a1 = XINT (arg1);
|
|
|
998 if (a1 < lowlim || a1 > highlim)
|
|
|
999 args_out_of_range_3 (arg1, make_int (lowlim), make_int (highlim));
|
|
|
1000
|
|
|
1001 if (CHARSET_DIMENSION (cs) == 1)
|
|
|
1002 {
|
|
|
1003 if (!NILP (arg2))
|
|
|
1004 signal_simple_error
|
|
|
1005 ("Charset is of dimension one; second octet must be nil", arg2);
|
|
|
1006 return make_char (MAKE_CHAR (charset, a1, 0));
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 CHECK_INT (arg2);
|
|
|
1010 a2 = XINT (arg2);
|
|
|
1011 if (a2 < lowlim || a2 > highlim)
|
|
|
1012 args_out_of_range_3 (arg2, make_int (lowlim), make_int (highlim));
|
|
|
1013
|
|
|
1014 return make_char (MAKE_CHAR (charset, a1, a2));
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 DEFUN ("char-charset", Fchar_charset, 1, 1, 0, /*
|
|
|
1018 Return the character set of char CH.
|
|
|
1019 */
|
|
|
1020 (ch))
|
|
|
1021 {
|
|
|
1022 CHECK_CHAR_COERCE_INT (ch);
|
|
|
1023
|
|
|
1024 return XCHARSET_NAME (CHARSET_BY_LEADING_BYTE
|
|
|
1025 (CHAR_LEADING_BYTE (XCHAR (ch))));
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 DEFUN ("char-octet", Fchar_octet, 1, 2, 0, /*
|
|
|
1029 Return the octet numbered N (should be 0 or 1) of char CH.
|
|
|
1030 N defaults to 0 if omitted.
|
|
|
1031 */
|
|
|
1032 (ch, n))
|
|
|
1033 {
|
|
|
1034 Lisp_Object charset;
|
|
|
1035 int c1, c2;
|
|
|
1036
|
|
|
1037 CHECK_CHAR_COERCE_INT (ch);
|
|
|
1038 if (NILP (n))
|
|
|
1039 n = Qzero;
|
|
|
1040 else
|
|
|
1041 {
|
|
|
1042 CHECK_INT (n);
|
|
|
1043 if (XINT (n) != 0 && XINT (n) != 1)
|
|
|
1044 signal_simple_error ("Octet number must be 0 or 1", n);
|
|
|
1045 }
|
|
|
1046 BREAKUP_CHAR (XCHAR (ch), charset, c1, c2);
|
|
|
1047 if (XINT (n) == 0)
|
|
|
1048 return make_int (c1);
|
|
|
1049 else
|
|
|
1050 return make_int (c2);
|
|
|
1051 }
|
|
|
1052
|
|
|
1053
|
|
|
1054 /************************************************************************/
|
|
|
1055 /* composite character functions */
|
|
|
1056 /************************************************************************/
|
|
|
1057
|
|
|
1058 Emchar
|
|
|
1059 lookup_composite_char (Bufbyte *str, int len)
|
|
|
1060 {
|
|
|
1061 Lisp_Object lispstr = make_string (str, len);
|
|
|
1062 Lisp_Object ch = Fgethash (lispstr,
|
|
|
1063 Vcomposite_char_string2char_hashtable,
|
|
|
1064 Qunbound);
|
|
|
1065 Emchar emch;
|
|
|
1066
|
|
|
1067 if (UNBOUNDP (ch))
|
|
|
1068 {
|
|
|
1069 if (composite_char_row_next >= 128)
|
|
|
1070 signal_simple_error ("No more composite chars available", lispstr);
|
|
|
1071 emch = MAKE_CHAR (Vcharset_composite, composite_char_row_next,
|
|
|
1072 composite_char_col_next);
|
|
|
1073 Fputhash (make_char (emch), lispstr,
|
|
|
1074 Vcomposite_char_char2string_hashtable);
|
|
|
1075 Fputhash (lispstr, make_char (emch),
|
|
|
1076 Vcomposite_char_string2char_hashtable);
|
|
|
1077 composite_char_col_next++;
|
|
|
1078 if (composite_char_col_next >= 128)
|
|
|
1079 {
|
|
|
1080 composite_char_col_next = 32;
|
|
|
1081 composite_char_row_next++;
|
|
|
1082 }
|
|
|
1083 }
|
|
|
1084 else
|
|
|
1085 emch = XCHAR (ch);
|
|
|
1086 return emch;
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 Lisp_Object
|
|
|
1090 composite_char_string (Emchar ch)
|
|
|
1091 {
|
|
|
1092 Lisp_Object str = Fgethash (make_char (ch),
|
|
|
1093 Vcomposite_char_char2string_hashtable,
|
|
|
1094 Qunbound);
|
|
|
1095 assert (!UNBOUNDP (str));
|
|
|
1096 return str;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099 DEFUN ("make-composite-char", Fmake_composite_char, 1, 1, 0, /*
|
|
|
1100 Convert a string into a single composite character.
|
|
|
1101 The character is the result of overstriking all the characters in
|
|
|
1102 the string.
|
|
|
1103 */
|
|
|
1104 (string))
|
|
|
1105 {
|
|
|
1106 CHECK_STRING (string);
|
|
|
1107 return make_char (lookup_composite_char (XSTRING_DATA (string),
|
|
|
1108 XSTRING_LENGTH (string)));
|
|
|
1109 }
|
|
|
1110
|
|
|
1111 DEFUN ("composite-char-string", Fcomposite_char_string, 1, 1, 0, /*
|
|
|
1112 Return a string of the characters comprising a composite character.
|
|
|
1113 */
|
|
|
1114 (ch))
|
|
|
1115 {
|
|
|
1116 Emchar emch;
|
|
|
1117
|
|
|
1118 CHECK_CHAR (ch);
|
|
|
1119 emch = XCHAR (ch);
|
|
|
1120 if (CHAR_LEADING_BYTE (emch) != LEADING_BYTE_COMPOSITE)
|
|
|
1121 signal_simple_error ("Must be composite char", ch);
|
|
|
1122 return composite_char_string (emch);
|
|
|
1123 }
|
|
|
1124
|
|
|
1125
|
|
|
1126 /************************************************************************/
|
|
|
1127 /* initialization */
|
|
|
1128 /************************************************************************/
|
|
|
1129
|
|
|
1130 void
|
|
|
1131 syms_of_mule_charset (void)
|
|
|
1132 {
|
|
|
1133 DEFSUBR (Fcharsetp);
|
|
|
1134 DEFSUBR (Ffind_charset);
|
|
|
1135 DEFSUBR (Fget_charset);
|
|
|
1136 DEFSUBR (Fcharset_list);
|
|
|
1137 DEFSUBR (Fcharset_name);
|
|
|
1138 DEFSUBR (Fmake_charset);
|
|
|
1139 DEFSUBR (Fmake_reverse_direction_charset);
|
|
|
1140 /* DEFSUBR (Freverse_direction_charset); */
|
|
|
1141 DEFSUBR (Fcharset_from_attributes);
|
|
|
1142 DEFSUBR (Fcharset_doc_string);
|
|
|
1143 DEFSUBR (Fcharset_dimension);
|
|
|
1144 DEFSUBR (Fcharset_property);
|
|
|
1145 DEFSUBR (Fset_charset_ccl_program);
|
|
|
1146 DEFSUBR (Fset_charset_registry);
|
|
|
1147
|
|
|
1148 DEFSUBR (Fmake_char);
|
|
|
1149 DEFSUBR (Fchar_charset);
|
|
|
1150 DEFSUBR (Fchar_octet);
|
|
|
1151
|
|
|
1152 DEFSUBR (Fmake_composite_char);
|
|
|
1153 DEFSUBR (Fcomposite_char_string);
|
|
|
1154
|
|
|
1155 defsymbol (&Qcharsetp, "charsetp");
|
|
|
1156 defsymbol (&Qregistry, "registry");
|
|
|
1157 defsymbol (&Qfinal, "final");
|
|
|
1158 defsymbol (&Qgraphic, "graphic");
|
|
|
1159 defsymbol (&Qdirection, "direction");
|
|
|
1160 defsymbol (&Qreverse_direction_charset, "reverse-direction-charset");
|
|
|
1161 defsymbol (&Qccl_program, "ccl-program");
|
|
|
1162
|
|
|
1163 defsymbol (&Ql2r, "l2r");
|
|
|
1164 defsymbol (&Qr2l, "r2l");
|
|
|
1165
|
|
|
1166 /* Charsets */
|
|
|
1167 defsymbol (&Qascii, "ascii");
|
|
|
1168 defsymbol (&Qcontrol_1, "control-1");
|
|
|
1169 defsymbol (&Qlatin_1, "latin-1");
|
|
|
1170 defsymbol (&Qlatin_2, "latin-2");
|
|
|
1171 defsymbol (&Qlatin_3, "latin-3");
|
|
|
1172 defsymbol (&Qlatin_4, "latin-4");
|
|
|
1173 defsymbol (&Qcyrillic, "cyrillic");
|
|
|
1174 defsymbol (&Qarabic, "arabic");
|
|
|
1175 defsymbol (&Qgreek, "greek");
|
|
|
1176 defsymbol (&Qhebrew, "hebrew");
|
|
|
1177 defsymbol (&Qlatin_5, "latin-5");
|
|
|
1178 defsymbol (&Qthai, "thai");
|
|
|
1179
|
|
|
1180 defsymbol (&Qjapanese_jisx0201_kana, "japanese-jisx0201-kana");
|
|
|
1181 defsymbol (&Qjapanese_jisx0201_roman, "japanese-jisx0201-roman");
|
|
|
1182 defsymbol (&Qjapanese_jisx0208_1978, "japanese-jisx0208-1978");
|
|
|
1183 defsymbol (&Qjapanese_jisx0208, "japanese-jisx0208");
|
|
|
1184 defsymbol (&Qjapanese_jisx0212, "japanese-jisx0212");
|
|
|
1185
|
|
|
1186 defsymbol (&Qchinese_gb, "chinese-gb");
|
|
|
1187 defsymbol (&Qchinese_big5_1, "chinese-big5-1");
|
|
|
1188 defsymbol (&Qchinese_big5_2, "chinese-big5-2");
|
|
|
1189 defsymbol (&Qchinese_cns11643_1, "chinese-cns11643-1");
|
|
|
1190 defsymbol (&Qchinese_cns11643_2, "chinese-cns11643-2");
|
|
|
1191
|
|
|
1192 defsymbol (&Qkorean_ksc5601, "korean-ksc5601");
|
|
|
1193 defsymbol (&Qcomposite, "composite");
|
|
|
1194 }
|
|
|
1195
|
|
|
1196 void
|
|
|
1197 vars_of_mule_charset (void)
|
|
|
1198 {
|
|
|
1199 int i, j, k;
|
|
|
1200
|
|
|
1201 for (i = 0; i < 128; i++)
|
|
|
1202 charset_by_leading_byte[i] = Qnil;
|
|
|
1203
|
|
|
1204 for (i = 0; i < 4; i++)
|
|
|
1205 for (j = 0; j < 128; j++)
|
|
|
1206 for (k = 0; k < 2; k ++)
|
|
|
1207 charset_by_attributes[i][j][k] = Qnil;
|
|
|
1208
|
|
|
1209 /* Now done at compile time
|
|
|
1210 for (i = 0; i < 128; i++)
|
|
|
1211 rep_bytes_by_first_byte[i] = 1;
|
|
|
1212 */
|
|
|
1213
|
|
|
1214 next_allocated_1_byte_leading_byte = MIN_LEADING_BYTE_PRIVATE_1;
|
|
|
1215 next_allocated_2_byte_leading_byte = MIN_LEADING_BYTE_PRIVATE_2;
|
|
|
1216 }
|
|
|
1217
|
|
|
1218 void
|
|
|
1219 complex_vars_of_mule_charset (void)
|
|
|
1220 {
|
|
|
1221 staticpro (&Vcharset_hashtable);
|
|
|
1222 Vcharset_hashtable = make_lisp_hashtable (50, HASHTABLE_NONWEAK,
|
|
|
1223 HASHTABLE_EQ);
|
|
|
1224
|
|
|
1225 /* Predefined character sets. We store them into variables for
|
|
|
1226 ease of access. */
|
|
|
1227
|
|
|
1228 Vcharset_ascii =
|
|
|
1229 make_charset (Qascii, LEADING_BYTE_ASCII, 1,
|
|
|
1230 CHARSET_TYPE_94, 1, 0, 'B',
|
|
|
1231 CHARSET_LEFT_TO_RIGHT,
|
|
|
1232 build_string ("ASCII"),
|
|
|
1233 build_string ("ISO8859-1"));
|
|
|
1234 Vcharset_control_1 =
|
|
|
1235 make_charset (Qcontrol_1, LEADING_BYTE_CONTROL_1, 2,
|
|
|
1236 CHARSET_TYPE_94, 1, 0, 0,
|
|
|
1237 CHARSET_LEFT_TO_RIGHT,
|
|
|
1238 build_string ("Control characters"),
|
|
|
1239 build_string (""));
|
|
|
1240 Vcharset_latin_1 =
|
|
|
1241 make_charset (Qlatin_1, LEADING_BYTE_LATIN_1, 2,
|
|
|
1242 CHARSET_TYPE_96, 1, 1, 'A',
|
|
|
1243 CHARSET_LEFT_TO_RIGHT,
|
|
|
1244 build_string ("Latin-1"),
|
|
|
1245 build_string ("ISO8859-1"));
|
|
|
1246 Vcharset_latin_2 =
|
|
|
1247 make_charset (Qlatin_2, LEADING_BYTE_LATIN_2, 2,
|
|
|
1248 CHARSET_TYPE_96, 1, 1, 'B',
|
|
|
1249 CHARSET_LEFT_TO_RIGHT,
|
|
|
1250 build_string ("Latin-2"),
|
|
|
1251 build_string ("ISO8859-2"));
|
|
|
1252 Vcharset_latin_3 =
|
|
|
1253 make_charset (Qlatin_3, LEADING_BYTE_LATIN_3, 2,
|
|
|
1254 CHARSET_TYPE_96, 1, 1, 'C',
|
|
|
1255 CHARSET_LEFT_TO_RIGHT,
|
|
|
1256 build_string ("Latin-3"),
|
|
|
1257 build_string ("ISO8859-3"));
|
|
|
1258 Vcharset_latin_4 =
|
|
|
1259 make_charset (Qlatin_4, LEADING_BYTE_LATIN_4, 2,
|
|
|
1260 CHARSET_TYPE_96, 1, 1, 'D',
|
|
|
1261 CHARSET_LEFT_TO_RIGHT,
|
|
|
1262 build_string ("Latin-4"),
|
|
|
1263 build_string ("ISO8859-4"));
|
|
|
1264 Vcharset_cyrillic =
|
|
|
1265 make_charset (Qcyrillic, LEADING_BYTE_CYRILLIC, 2,
|
|
|
1266 CHARSET_TYPE_96, 1, 1, 'L',
|
|
|
1267 CHARSET_LEFT_TO_RIGHT,
|
|
|
1268 build_string ("Cyrillic"),
|
|
|
1269 build_string ("ISO8859-5"));
|
|
|
1270 Vcharset_arabic =
|
|
|
1271 make_charset (Qarabic, LEADING_BYTE_ARABIC, 2,
|
|
|
1272 CHARSET_TYPE_96, 1, 1, 'G',
|
|
|
1273 CHARSET_RIGHT_TO_LEFT,
|
|
|
1274 build_string ("Arabic"),
|
|
|
1275 build_string ("ISO8859-6"));
|
|
|
1276 Vcharset_greek =
|
|
|
1277 make_charset (Qgreek, LEADING_BYTE_GREEK, 2,
|
|
|
1278 CHARSET_TYPE_96, 1, 1, 'F',
|
|
|
1279 CHARSET_LEFT_TO_RIGHT,
|
|
|
1280 build_string ("Greek"),
|
|
|
1281 build_string ("ISO8859-7"));
|
|
|
1282 Vcharset_hebrew =
|
|
|
1283 make_charset (Qhebrew, LEADING_BYTE_HEBREW, 2,
|
|
|
1284 CHARSET_TYPE_96, 1, 1, 'H',
|
|
|
1285 CHARSET_RIGHT_TO_LEFT,
|
|
|
1286 build_string ("Hebrew"),
|
|
|
1287 build_string ("ISO8859-8"));
|
|
|
1288 Vcharset_latin_5 =
|
|
|
1289 make_charset (Qlatin_5, LEADING_BYTE_LATIN_5, 2,
|
|
|
1290 CHARSET_TYPE_96, 1, 1, 'M',
|
|
|
1291 CHARSET_LEFT_TO_RIGHT,
|
|
|
1292 build_string ("Latin-5"),
|
|
|
1293 build_string ("ISO8859-9"));
|
|
|
1294 Vcharset_thai =
|
|
|
1295 make_charset (Qthai, LEADING_BYTE_THAI, 2,
|
|
|
1296 CHARSET_TYPE_96, 1, 1, 'T',
|
|
|
1297 CHARSET_LEFT_TO_RIGHT,
|
|
|
1298 build_string ("Thai"),
|
|
|
1299 build_string ("TIS620"));
|
|
|
1300
|
|
|
1301 /* Japanese */
|
|
|
1302 Vcharset_japanese_jisx0201_kana =
|
|
|
1303 make_charset (Qjapanese_jisx0201_kana,
|
|
|
1304 LEADING_BYTE_JAPANESE_JISX0201_KANA, 2,
|
|
|
1305 CHARSET_TYPE_94, 1, 1, 'I',
|
|
|
1306 CHARSET_LEFT_TO_RIGHT,
|
|
|
1307 build_string ("Japanese Katakana"),
|
|
|
1308 build_string ("JISX0201.1976"));
|
|
|
1309 Vcharset_japanese_jisx0201_roman =
|
|
|
1310 make_charset (Qjapanese_jisx0201_roman,
|
|
|
1311 LEADING_BYTE_JAPANESE_JISX0201_ROMAN, 2,
|
|
|
1312 CHARSET_TYPE_94, 1, 0, 'J',
|
|
|
1313 CHARSET_LEFT_TO_RIGHT,
|
|
|
1314 build_string ("Japanese Roman"),
|
|
|
1315 build_string ("JISX0201.1976"));
|
|
|
1316 Vcharset_japanese_jisx0208_1978 =
|
|
|
1317 make_charset (Qjapanese_jisx0208_1978,
|
|
|
1318 LEADING_BYTE_JAPANESE_JISX0208_1978, 3,
|
|
|
1319 CHARSET_TYPE_94X94, 2, 0, '@',
|
|
|
1320 CHARSET_LEFT_TO_RIGHT,
|
|
|
1321 build_string ("Japanese Old"),
|
|
|
1322 build_string ("\\(JISX0208\\|jisc6226\\).1978"));
|
|
|
1323 Vcharset_japanese_jisx0208 =
|
|
|
1324 make_charset (Qjapanese_jisx0208,
|
|
|
1325 LEADING_BYTE_JAPANESE_JISX0208, 3,
|
|
|
1326 CHARSET_TYPE_94X94, 2, 0, 'B',
|
|
|
1327 CHARSET_LEFT_TO_RIGHT,
|
|
|
1328 build_string ("Japanese"),
|
|
|
1329 build_string ("JISX0208.\\(1983\\|1990\\)"));
|
|
|
1330 Vcharset_japanese_jisx0212 =
|
|
|
1331 make_charset (Qjapanese_jisx0212,
|
|
|
1332 LEADING_BYTE_JAPANESE_JISX0212, 3,
|
|
|
1333 CHARSET_TYPE_94X94, 2, 0, 'D',
|
|
|
1334 CHARSET_LEFT_TO_RIGHT,
|
|
|
1335 build_string ("Japanese Supplement"),
|
|
|
1336 build_string ("JISX0212"));
|
|
|
1337
|
|
|
1338 /* Chinese */
|
|
|
1339 Vcharset_chinese_gb =
|
|
|
1340 make_charset (Qchinese_gb, LEADING_BYTE_CHINESE_GB, 3,
|
|
|
1341 CHARSET_TYPE_94X94, 2, 0, 'A',
|
|
|
1342 CHARSET_LEFT_TO_RIGHT,
|
|
|
1343 build_string ("Chinese GB"),
|
|
|
1344 build_string ("GB2312"));
|
|
|
1345 #define CHINESE_CNS_PLANE_RE(n) "CNS11643[.-]\\(.*[.-]\\)?" n "$"
|
|
|
1346 Vcharset_chinese_cns11643_1 =
|
|
|
1347 make_charset (Qchinese_cns11643_1,
|
|
|
1348 LEADING_BYTE_CHINESE_CNS11643_1, 3,
|
|
|
1349 CHARSET_TYPE_94X94, 2, 0, 'G',
|
|
|
1350 CHARSET_LEFT_TO_RIGHT,
|
|
|
1351 build_string ("Chinese CNS Plane 1"),
|
|
|
1352 build_string (CHINESE_CNS_PLANE_RE("1")));
|
|
|
1353 Vcharset_chinese_cns11643_2 =
|
|
|
1354 make_charset (Qchinese_cns11643_2,
|
|
|
1355 LEADING_BYTE_CHINESE_CNS11643_2, 3,
|
|
|
1356 CHARSET_TYPE_94X94, 2, 0, 'H',
|
|
|
1357 CHARSET_LEFT_TO_RIGHT,
|
|
|
1358 build_string ("Chinese CNS Plane 2"),
|
|
|
1359 build_string (CHINESE_CNS_PLANE_RE("2")));
|
|
|
1360 Vcharset_chinese_big5_1 =
|
|
|
1361 make_charset (Qchinese_big5_1, LEADING_BYTE_CHINESE_BIG5_1, 3,
|
|
|
1362 CHARSET_TYPE_94X94, 2, 0, '0',
|
|
|
1363 CHARSET_LEFT_TO_RIGHT,
|
|
|
1364 build_string ("Chinese Big5 Level 1"),
|
|
|
1365 build_string ("Big5"));
|
|
|
1366 Vcharset_chinese_big5_2 =
|
|
|
1367 make_charset (Qchinese_big5_2, LEADING_BYTE_CHINESE_BIG5_2, 3,
|
|
|
1368 CHARSET_TYPE_94X94, 2, 0, '1',
|
|
|
1369 CHARSET_LEFT_TO_RIGHT,
|
|
|
1370 build_string ("Chinese Big5 Level 2"),
|
|
|
1371 build_string ("Big5"));
|
|
|
1372
|
|
|
1373 Vcharset_korean_ksc5601 =
|
|
|
1374 make_charset (Qkorean_ksc5601, LEADING_BYTE_KOREAN_KSC5601, 3,
|
|
|
1375 CHARSET_TYPE_94X94, 2, 0, 'C',
|
|
|
1376 CHARSET_LEFT_TO_RIGHT,
|
|
|
1377 build_string ("Korean"),
|
|
|
1378 build_string ("KSC5601"));
|
|
|
1379 /* #### For simplicity, we put composite chars into a 96x96 charset.
|
|
|
1380 This is going to lead to problems because you can run out of
|
|
|
1381 room, esp. as we don't yet recycle numbers. */
|
|
|
1382 Vcharset_composite =
|
|
|
1383 make_charset (Qcomposite, LEADING_BYTE_COMPOSITE, 3,
|
|
|
1384 CHARSET_TYPE_96X96, 2, 0, 0,
|
|
|
1385 CHARSET_LEFT_TO_RIGHT,
|
|
|
1386 build_string ("Composite characters"),
|
|
|
1387 build_string (""));
|
|
|
1388
|
|
|
1389 composite_char_row_next = 32;
|
|
|
1390 composite_char_col_next = 32;
|
|
|
1391
|
|
|
1392 Vcomposite_char_string2char_hashtable =
|
|
|
1393 make_lisp_hashtable (500, HASHTABLE_NONWEAK,
|
|
|
1394 HASHTABLE_EQUAL);
|
|
|
1395 Vcomposite_char_char2string_hashtable =
|
|
|
1396 make_lisp_hashtable (500, HASHTABLE_NONWEAK,
|
|
|
1397 HASHTABLE_EQ);
|
|
|
1398 staticpro (&Vcomposite_char_string2char_hashtable);
|
|
|
1399 staticpro (&Vcomposite_char_char2string_hashtable);
|
|
|
1400
|
|
|
1401 /* Faux charsets used only for convenience in retrieving the
|
|
|
1402 number of rep bytes associated with a leading byte. */
|
|
|
1403
|
|
|
1404 make_charset (Qnil, PRE_LEADING_BYTE_PRIVATE_1, 3, 0, 0, 0, 0,
|
|
|
1405 0, Qnil, Qnil);
|
|
|
1406 make_charset (Qnil, PRE_LEADING_BYTE_PRIVATE_2, 4, 0, 0, 0, 0,
|
|
|
1407 0, Qnil, Qnil);
|
|
|
1408 }
|
