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771
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1 /* Header file for text manipulation primitives and macros.
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2 Copyright (C) 1985-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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788
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4 Copyright (C) 2000, 2001, 2002 Ben Wing.
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771
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: FSF 19.30. */
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24
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25 /* Authorship:
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26
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27 Mostly written by Ben Wing, starting around 1995.
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28 Current TO_IN/EXTERNAL_FORMAT macros written by Martin Buchholz,
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29 designed by Ben Wing based on earlier macros by Ben Wing.
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30 Separated out June 18, 2000 from buffer.h into text.h.
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31 */
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32
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33 #ifndef INCLUDED_text_h_
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34 #define INCLUDED_text_h_
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35
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36 #include <wchar.h>
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37
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38 /* ---------------------------------------------------------------------- */
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39 /* Super-basic character properties */
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40 /* ---------------------------------------------------------------------- */
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41
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42 /* These properties define the specifics of how our current encoding fits
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43 in the basic model used for the encoding. Because this model is the same
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44 as is used for UTF-8, all these properties could be defined for it, too.
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45 This would instantly make the rest of this file work with UTF-8 (with
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46 the exception of a few called functions that would need to be redefined).
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47
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48 (UTF-2000 implementers, take note!)
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49 */
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50
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51 /* If you want more than this, you need to include charset.h */
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52
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53 #ifndef MULE
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54
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55 #define REP_BYTES_BY_FIRST_BYTE(fb) 1
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56 #define BYTE_ASCII_P(byte) 1
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57 # define MAX_EMCHAR_LEN 1
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58
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59 #else /* MULE */
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60
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61 /* These are carefully designed to work if BYTE is signed or unsigned. */
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62 /* Note that SPC and DEL are considered ASCII, not control. */
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63
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64 #define BYTE_ASCII_P(byte) (((byte) & ~0x7f) == 0)
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65 #define BYTE_C0_P(byte) (((byte) & ~0x1f) == 0)
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66 #define BYTE_C1_P(byte) (((byte) & ~0x1f) == 0x80)
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67
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68 /* Does BYTE represent the first byte of a character? */
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69
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70 #define INTBYTE_FIRST_BYTE_P(byte) ((byte) < 0xA0)
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71
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72 /* Does BYTE represent the first byte of a multi-byte character? */
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73
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74 #define INTBYTE_LEADING_BYTE_P(byte) BYTE_C1_P (byte)
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75
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76 /* Table of number of bytes in the string representation of a character
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77 indexed by the first byte of that representation.
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78
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79 This value can be derived in other ways -- e.g. something like
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80 XCHARSET_REP_BYTES (CHARSET_BY_LEADING_BYTE (first_byte))
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81 but it's faster this way. */
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82 extern const Bytecount rep_bytes_by_first_byte[0xA0];
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83
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84 /* Number of bytes in the string representation of a character. */
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85
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800
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86 #ifdef ERROR_CHECK_TEXT
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788
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87
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88 INLINE_HEADER int REP_BYTES_BY_FIRST_BYTE_1 (int fb, const char *file,
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89 int line);
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90 INLINE_HEADER int
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91 REP_BYTES_BY_FIRST_BYTE_1 (int fb, const char *file, int line)
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771
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92 {
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93 assert_at_line (fb < 0xA0, file, line);
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94 return rep_bytes_by_first_byte[fb];
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95 }
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96
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97 #define REP_BYTES_BY_FIRST_BYTE(fb) \
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98 REP_BYTES_BY_FIRST_BYTE_1 (fb, __FILE__, __LINE__)
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99
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800
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100 #else /* ERROR_CHECK_TEXT */
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101
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102 #define REP_BYTES_BY_FIRST_BYTE(fb) (rep_bytes_by_first_byte[fb])
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103
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800
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104 #endif /* ERROR_CHECK_TEXT */
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788
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105
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771
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106 /* Is this character represented by more than one byte in a string? */
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107
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108 #define CHAR_MULTIBYTE_P(c) ((c) >= 0x80)
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109
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110 #define CHAR_ASCII_P(c) (!CHAR_MULTIBYTE_P (c))
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111
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112 #define MAX_EMCHAR_LEN 4
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113
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114 #endif /* MULE */
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115
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116 int dfc_coding_system_is_unicode (Lisp_Object coding_system);
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117
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118 DECLARE_INLINE_HEADER (
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119 Bytecount dfc_external_data_len (const void *ptr, Lisp_Object codesys)
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120 )
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121 {
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122 if (dfc_coding_system_is_unicode (codesys))
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123 return sizeof (wchar_t) * wcslen ((wchar_t *) ptr);
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124 else
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125 return strlen ((char *) ptr);
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126 }
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127
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128
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129 /************************************************************************/
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130 /* */
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131 /* working with raw internal-format data */
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132 /* */
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133 /************************************************************************/
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134
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135 /* NOTE: In all the following macros, we follow these rules concerning
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136 multiple evaluation of the arguments:
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137
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138 1) Anything that's an lvalue can be evaluated more than once.
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139 2) Anything that's a Lisp Object can be evaluated more than once.
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140 This should probably be changed, but this follows the way
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141 that all the macros in lisp.h do things.
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142 3) 'struct buffer *' arguments can be evaluated more than once.
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143 4) Nothing else can be evaluated more than once. Use inline
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144 functions, if necessary, to prevent multiple evaluation.
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145 5) An exception to (4) is that there are some macros below that
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146 may evaluate their arguments more than once. They are all
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147 denoted with the word "unsafe" in their name and are generally
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148 meant to be called only by other macros that have already
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149 stored the calling values in temporary variables.
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150
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151
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152 Use the following functions/macros on contiguous strings of data.
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153 If the text you're operating on is known to come from a buffer, use
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154 the buffer-level functions below -- they know about the gap and may
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155 be more efficient.
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156
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157
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158 ----------------------------------------------------------------------------
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159 (A) For working with charptr's (pointers to internally-formatted text):
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160 ----------------------------------------------------------------------------
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161
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162 VALID_CHARPTR_P (ptr):
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163 Given a charptr, does it point to the beginning of a character?
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164
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165 ASSERT_VALID_CHARPTR (ptr):
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166 If error-checking is enabled, assert that the given charptr
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167 points to the beginning of a character. Otherwise, do nothing.
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168
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169 INC_CHARPTR (ptr):
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170 Given a charptr (assumed to point at the beginning of a character),
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171 modify that pointer so it points to the beginning of the next
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172 character.
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173
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174 DEC_CHARPTR (ptr):
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175 Given a charptr (assumed to point at the beginning of a
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176 character or at the very end of the text), modify that pointer
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177 so it points to the beginning of the previous character.
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178
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179 VALIDATE_CHARPTR_BACKWARD (ptr):
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180 Make sure that PTR is pointing to the beginning of a character.
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181 If not, back up until this is the case. Note that there are not
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182 too many places where it is legitimate to do this sort of thing.
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183 It's an error if you're passed an "invalid" char * pointer.
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184 NOTE: PTR *must* be pointing to a valid part of the string (i.e.
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185 not the very end, unless the string is zero-terminated or
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186 something) in order for this function to not cause crashes.
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187
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188 VALIDATE_CHARPTR_FORWARD (ptr):
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189 Make sure that PTR is pointing to the beginning of a character.
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190 If not, move forward until this is the case. Note that there
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191 are not too many places where it is legitimate to do this sort
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192 of thing. It's an error if you're passed an "invalid" char *
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193 pointer.
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194
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195 ---------------------------------------------------------------------
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196 (B) For working with the length (in bytes and characters) of a
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197 section of internally-formatted text:
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198 ---------------------------------------------------------------------
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199
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200 bytecount_to_charcount (ptr, nbi):
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201 Given a pointer to a text string and a length in bytes,
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202 return the equivalent length in characters.
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203
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204 charcount_to_bytecount (ptr, nch):
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205 Given a pointer to a text string and a length in characters,
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206 return the equivalent length in bytes.
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207
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208 charptr_n_addr (ptr, n):
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209 Return a pointer to the beginning of the character offset N
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210 (in characters) from PTR.
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211
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212 -------------------------------------------------------------------------
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213 (C) For retrieving or changing the character pointed to by a charptr:
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214 -------------------------------------------------------------------------
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215
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216 charptr_emchar (ptr):
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217 Retrieve the character pointed to by PTR as an Emchar.
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218
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219 charptr_emchar_n (ptr, n):
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220 Retrieve the character at offset N (in characters) from PTR,
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221 as an Emchar.
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222
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223 set_charptr_emchar (ptr, ch):
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224 Store the character CH (an Emchar) as internally-formatted
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225 text starting at PTR. Return the number of bytes stored.
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226
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227 charptr_copy_char (src, dst):
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228 Retrieve the character pointed to by SRC and store it as
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229 internally-formatted text in DST.
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230
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231 ----------------------------------
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232 (D) For working with Emchars:
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233 ----------------------------------
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234
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235 [Note that there are other functions/macros for working with Emchars
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236 in charset.h, for retrieving the charset of an Emchar and such.]
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237
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238 valid_char_p (ch):
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239 Return whether the given Emchar is valid.
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240
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241 CHARP (ch):
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242 Return whether the given Lisp_Object is a character.
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243
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244 CHECK_CHAR_COERCE_INT (ch):
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245 Signal an error if CH is not a valid character or integer Lisp_Object.
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246 If CH is an integer Lisp_Object, convert it to a character Lisp_Object,
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247 but merely by repackaging, without performing tests for char validity.
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248
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249 MAX_EMCHAR_LEN:
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250 Maximum number of buffer bytes per Emacs character.
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251 */
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252
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253 /* ---------------------------------------------------------------------- */
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254 /* (A) For working with charptr's (pointers to internally-formatted text) */
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255 /* ---------------------------------------------------------------------- */
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256
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257 #ifdef MULE
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258 # define VALID_CHARPTR_P(ptr) INTBYTE_FIRST_BYTE_P (* (unsigned char *) ptr)
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259 #else
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260 # define VALID_CHARPTR_P(ptr) 1
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261 #endif
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262
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800
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263 #ifdef ERROR_CHECK_TEXT
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771
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264 # define ASSERT_VALID_CHARPTR(ptr) assert (VALID_CHARPTR_P (ptr))
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265 #else
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266 # define ASSERT_VALID_CHARPTR(ptr)
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267 #endif
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268
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269 /* Note that INC_CHARPTR() and DEC_CHARPTR() have to be written in
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270 completely separate ways. INC_CHARPTR() cannot use the DEC_CHARPTR()
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271 trick of looking for a valid first byte because it might run off
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272 the end of the string. DEC_CHARPTR() can't use the INC_CHARPTR()
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273 method because it doesn't have easy access to the first byte of
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274 the character it's moving over. */
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275
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276 #define REAL_INC_CHARPTR(ptr) \
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277 ((void) ((ptr) += REP_BYTES_BY_FIRST_BYTE (* (unsigned char *) (ptr))))
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278
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279 #define REAL_INC_CHARBYTEBPOS(ptr, pos) \
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280 (pos += REP_BYTES_BY_FIRST_BYTE (* (unsigned char *) (ptr)))
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281
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282 #define REAL_DEC_CHARPTR(ptr) do { \
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283 (ptr)--; \
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284 } while (!VALID_CHARPTR_P (ptr))
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285
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800
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286 #ifdef ERROR_CHECK_TEXT
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771
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287 #define INC_CHARPTR(ptr) do { \
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288 ASSERT_VALID_CHARPTR (ptr); \
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289 REAL_INC_CHARPTR (ptr); \
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290 } while (0)
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291
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292 #define INC_CHARBYTEBPOS(ptr, pos) do { \
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293 ASSERT_VALID_CHARPTR (ptr); \
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294 REAL_INC_CHARBYTEBPOS (ptr, pos); \
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295 } while (0)
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296
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297 #define DEC_CHARPTR(ptr) do { \
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298 const Intbyte *dc_ptr1 = (ptr); \
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299 const Intbyte *dc_ptr2 = dc_ptr1; \
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300 REAL_DEC_CHARPTR (dc_ptr2); \
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301 assert (dc_ptr1 - dc_ptr2 == \
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302 REP_BYTES_BY_FIRST_BYTE (*dc_ptr2)); \
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303 (ptr) = (Intbyte *) dc_ptr2; \
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304 } while (0)
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305
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800
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306 #else /* ! ERROR_CHECK_TEXT */
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771
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307 #define INC_CHARBYTEBPOS(ptr, pos) REAL_INC_CHARBYTEBPOS (ptr, pos)
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308 #define INC_CHARPTR(ptr) REAL_INC_CHARPTR (ptr)
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309 #define DEC_CHARPTR(ptr) REAL_DEC_CHARPTR (ptr)
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800
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310 #endif /* ! ERROR_CHECK_TEXT */
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771
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311
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312 #ifdef MULE
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313
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314 /* Note that this reads the byte at *PTR! */
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315
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316 #define VALIDATE_CHARPTR_BACKWARD(ptr) do { \
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317 while (!VALID_CHARPTR_P (ptr)) ptr--; \
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318 } while (0)
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319
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320 /* Given a Intbyte string at PTR of size N, possibly with a partial
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321 character at the end, return the size of the longest substring of
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322 complete characters. Does not assume that the byte at *(PTR + N) is
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323 readable. */
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324 DECLARE_INLINE_HEADER (
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325 Bytecount
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326 validate_intbyte_string_backward (Intbyte *ptr, Bytecount n)
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327 )
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328 {
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329 Intbyte *ptr2;
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330
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331 if (n == 0)
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332 return n;
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333 ptr2 = ptr + n - 1;
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334 VALIDATE_CHARPTR_BACKWARD (ptr2);
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335 if (ptr2 + REP_BYTES_BY_FIRST_BYTE (*ptr2) != ptr + n)
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336 return ptr2 - ptr;
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337 return n;
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338 }
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339
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340 /* This needs to be trickier than VALIDATE_CHARPTR_BACKWARD() to avoid the
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341 possibility of running off the end of the string. */
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342
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343 #define VALIDATE_CHARPTR_FORWARD(ptr) do { \
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344 Intbyte *vcf_ptr = (ptr); \
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345 VALIDATE_CHARPTR_BACKWARD (vcf_ptr); \
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346 if (vcf_ptr != (ptr)) \
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347 { \
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348 (ptr) = vcf_ptr; \
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349 INC_CHARPTR (ptr); \
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350 } \
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351 } while (0)
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352
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353 #else /* not MULE */
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354 #define VALIDATE_CHARPTR_BACKWARD(ptr)
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355 #define VALIDATE_CHARPTR_FORWARD(ptr)
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356 #define validate_intbyte_string_backward(ptr, n) (n)
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357 #endif /* not MULE */
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358
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359 /* -------------------------------------------------------------- */
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360 /* (B) For working with the length (in bytes and characters) of a */
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361 /* section of internally-formatted text */
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362 /* -------------------------------------------------------------- */
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363
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364 INLINE_HEADER const Intbyte *
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365 charptr_n_addr (const Intbyte *ptr, Charcount offset);
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366 INLINE_HEADER const Intbyte *
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367 charptr_n_addr (const Intbyte *ptr, Charcount offset)
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368 {
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369 return ptr + charcount_to_bytecount (ptr, offset);
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370 }
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371
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372 /* -------------------------------------------------------------------- */
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373 /* (C) For retrieving or changing the character pointed to by a charptr */
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374 /* -------------------------------------------------------------------- */
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375
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376 #define simple_charptr_emchar(ptr) ((Emchar) (ptr)[0])
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377 #define simple_set_charptr_emchar(ptr, x) ((ptr)[0] = (Intbyte) (x), 1)
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378 #define simple_charptr_copy_char(src, dst) ((dst)[0] = *(src), 1)
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379
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380 #ifdef MULE
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381
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382 Emchar non_ascii_charptr_emchar (const Intbyte *ptr);
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383 Bytecount non_ascii_set_charptr_emchar (Intbyte *ptr, Emchar c);
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384 Bytecount non_ascii_charptr_copy_char (const Intbyte *src, Intbyte *dst);
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385
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386 INLINE_HEADER Emchar charptr_emchar (const Intbyte *ptr);
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387 INLINE_HEADER Emchar
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388 charptr_emchar (const Intbyte *ptr)
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389 {
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|
|
390 return BYTE_ASCII_P (*ptr) ?
|
|
|
391 simple_charptr_emchar (ptr) :
|
|
|
392 non_ascii_charptr_emchar (ptr);
|
|
|
393 }
|
|
|
394
|
|
|
395 INLINE_HEADER Bytecount set_charptr_emchar (Intbyte *ptr, Emchar x);
|
|
|
396 INLINE_HEADER Bytecount
|
|
|
397 set_charptr_emchar (Intbyte *ptr, Emchar x)
|
|
|
398 {
|
|
|
399 return !CHAR_MULTIBYTE_P (x) ?
|
|
|
400 simple_set_charptr_emchar (ptr, x) :
|
|
|
401 non_ascii_set_charptr_emchar (ptr, x);
|
|
|
402 }
|
|
|
403
|
|
|
404 INLINE_HEADER Bytecount
|
|
|
405 charptr_copy_char (const Intbyte *src, Intbyte *dst);
|
|
|
406 INLINE_HEADER Bytecount
|
|
|
407 charptr_copy_char (const Intbyte *src, Intbyte *dst)
|
|
|
408 {
|
|
|
409 return BYTE_ASCII_P (*src) ?
|
|
|
410 simple_charptr_copy_char (src, dst) :
|
|
|
411 non_ascii_charptr_copy_char (src, dst);
|
|
|
412 }
|
|
|
413
|
|
|
414 #else /* not MULE */
|
|
|
415
|
|
|
416 # define charptr_emchar(ptr) simple_charptr_emchar (ptr)
|
|
|
417 # define set_charptr_emchar(ptr, x) simple_set_charptr_emchar (ptr, x)
|
|
|
418 # define charptr_copy_char(src, dst) simple_charptr_copy_char (src, dst)
|
|
|
419
|
|
|
420 #endif /* not MULE */
|
|
|
421
|
|
|
422 #define charptr_emchar_n(ptr, offset) \
|
|
|
423 charptr_emchar (charptr_n_addr (ptr, offset))
|
|
|
424
|
|
|
425
|
|
|
426 /* ---------------------------- */
|
|
|
427 /* (D) For working with Emchars */
|
|
|
428 /* ---------------------------- */
|
|
|
429
|
|
|
430 #ifdef MULE
|
|
|
431
|
|
|
432 int non_ascii_valid_char_p (Emchar ch);
|
|
|
433
|
|
|
434 INLINE_HEADER int valid_char_p (Emchar ch);
|
|
|
435 INLINE_HEADER int
|
|
|
436 valid_char_p (Emchar ch)
|
|
|
437 {
|
|
|
438 return (! (ch & ~0xFF)) || non_ascii_valid_char_p (ch);
|
|
|
439 }
|
|
|
440
|
|
|
441 #else /* not MULE */
|
|
|
442
|
|
|
443 #define valid_char_p(ch) (! (ch & ~0xFF))
|
|
|
444
|
|
|
445 #endif /* not MULE */
|
|
|
446
|
|
|
447 #define CHAR_INTP(x) (INTP (x) && valid_char_p (XINT (x)))
|
|
|
448
|
|
|
449 #define CHAR_OR_CHAR_INTP(x) (CHARP (x) || CHAR_INTP (x))
|
|
|
450
|
|
|
451 INLINE_HEADER Emchar XCHAR_OR_CHAR_INT (Lisp_Object obj);
|
|
|
452 INLINE_HEADER Emchar
|
|
|
453 XCHAR_OR_CHAR_INT (Lisp_Object obj)
|
|
|
454 {
|
|
|
455 return CHARP (obj) ? XCHAR (obj) : XINT (obj);
|
|
|
456 }
|
|
|
457
|
|
|
458 #define CHECK_CHAR_COERCE_INT(x) do { \
|
|
|
459 if (CHARP (x)) \
|
|
|
460 ; \
|
|
|
461 else if (CHAR_INTP (x)) \
|
|
|
462 x = make_char (XINT (x)); \
|
|
|
463 else \
|
|
|
464 x = wrong_type_argument (Qcharacterp, x); \
|
|
|
465 } while (0)
|
|
|
466
|
|
|
467
|
|
|
468
|
|
|
469 /************************************************************************/
|
|
|
470 /* */
|
|
|
471 /* working with Eistrings */
|
|
|
472 /* */
|
|
|
473 /************************************************************************/
|
|
|
474
|
|
|
475 /*
|
|
|
476 #### NOTE: This is a work in progress. Neither the API nor especially
|
|
|
477 the implementation is finished.
|
|
|
478
|
|
|
479 NOTE: An Eistring is a structure that makes it easy to work with
|
|
|
480 internally-formatted strings of data. It provides operations similar
|
|
|
481 in feel to the standard strcpy(), strcat(), strlen(), etc., but
|
|
|
482
|
|
|
483 (a) it is Mule-correct
|
|
|
484 (b) it does dynamic allocation so you never have to worry about size
|
|
793
|
485 restrictions
|
|
|
486 (c) it comes in an alloca() variety (all allocation is stack-local,
|
|
|
487 so there is no need to explicitly clean up) as well as a malloc()
|
|
|
488 variety
|
|
|
489 (d) it knows its own length, so it does not suffer from standard null
|
|
|
490 byte brain-damage -- but it null-terminates the data anyway, so
|
|
|
491 it can be passed to standard routines
|
|
|
492 (e) it provides a much more powerful set of operations and knows about
|
|
771
|
493 all the standard places where string data might reside: Lisp_Objects,
|
|
|
494 other Eistrings, Intbyte * data with or without an explicit length,
|
|
|
495 ASCII strings, Emchars, etc.
|
|
793
|
496 (f) it provides easy operations to convert to/from externally-formatted
|
|
|
497 data, and is easier to use than the standard TO_INTERNAL_FORMAT
|
|
771
|
498 and TO_EXTERNAL_FORMAT macros. (An Eistring can store both the internal
|
|
|
499 and external version of its data, but the external version is only
|
|
|
500 initialized or changed when you call eito_external().)
|
|
|
501
|
|
793
|
502 The idea is to make it as easy to write Mule-correct string manipulation
|
|
|
503 code as it is to write normal string manipulation code. We also make
|
|
|
504 the API sufficiently general that it can handle multiple internal data
|
|
|
505 formats (e.g. some fixed-width optimizing formats and a default variable
|
|
|
506 width format) and allows for *ANY* data format we might choose in the
|
|
|
507 future for the default format, including UCS2. (In other words, we can't
|
|
|
508 assume that the internal format is ASCII-compatible and we can't assume
|
|
|
509 it doesn't have embedded null bytes. We do assume, however, that any
|
|
|
510 chosen format will have the concept of null-termination.) All of this is
|
|
|
511 hidden from the user.
|
|
771
|
512
|
|
|
513 #### It is really too bad that we don't have a real object-oriented
|
|
|
514 language, or at least a language with polymorphism!
|
|
|
515
|
|
|
516
|
|
|
517 **********************************************
|
|
|
518 * Declaration *
|
|
|
519 **********************************************
|
|
|
520
|
|
|
521 To declare an Eistring, either put one of the following in the local
|
|
|
522 variable section:
|
|
|
523
|
|
|
524 DECLARE_EISTRING (name);
|
|
|
525 Declare a new Eistring. This is a standard local variable declaration
|
|
|
526 and can go anywhere in the variable declaration section. NAME itself
|
|
|
527 is declared as an Eistring *, and its storage declared on the stack.
|
|
|
528
|
|
|
529 DECLARE_EISTRING_MALLOC (name);
|
|
|
530 Declare a new Eistring, which uses malloc()ed instead of alloca()ed
|
|
|
531 data. This is a standard local variable declaration and can go
|
|
|
532 anywhere in the variable declaration section. Once you initialize
|
|
|
533 the Eistring, you will have to free it using eifree() to avoid
|
|
793
|
534 memory leaks. You will need to use this form if you are passing
|
|
|
535 an Eistring to any function that modifies it (otherwise, the
|
|
|
536 modified data may be in stack space and get overwritten when the
|
|
|
537 function returns).
|
|
771
|
538
|
|
|
539 or use
|
|
|
540
|
|
793
|
541 Eistring ei;
|
|
|
542 void eiinit (Eistring *ei);
|
|
|
543 void eiinit_malloc (Eistring *einame);
|
|
771
|
544 If you need to put an Eistring elsewhere than in a local variable
|
|
|
545 declaration (e.g. in a structure), declare it as shown and then
|
|
|
546 call one of the init macros.
|
|
|
547
|
|
|
548 Also note:
|
|
|
549
|
|
793
|
550 void eifree (Eistring *ei);
|
|
771
|
551 If you declared an Eistring to use malloc() to hold its data,
|
|
|
552 or converted it to the heap using eito_malloc(), then this
|
|
|
553 releases any data in it and afterwards resets the Eistring
|
|
|
554 using eiinit_malloc(). Otherwise, it just resets the Eistring
|
|
|
555 using eiinit().
|
|
|
556
|
|
|
557
|
|
|
558 **********************************************
|
|
|
559 * Conventions *
|
|
|
560 **********************************************
|
|
|
561
|
|
|
562 - The names of the functions have been chosen, where possible, to
|
|
|
563 match the names of str*() functions in the standard C API.
|
|
|
564 -
|
|
|
565
|
|
|
566
|
|
|
567 **********************************************
|
|
|
568 * Initialization *
|
|
|
569 **********************************************
|
|
|
570
|
|
|
571 void eireset (Eistring *eistr);
|
|
|
572 Initialize the Eistring to the empty string.
|
|
|
573
|
|
|
574 void eicpy_* (Eistring *eistr, ...);
|
|
|
575 Initialize the Eistring from somewhere:
|
|
|
576
|
|
|
577 void eicpy_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
578 ... from another Eistring.
|
|
|
579 void eicpy_lstr (Eistring *eistr, Lisp_Object lisp_string);
|
|
|
580 ... from a Lisp_Object string.
|
|
|
581 void eicpy_ch (Eistring *eistr, Emchar ch);
|
|
793
|
582 ... from an Emchar (this can be a conventional C character).
|
|
771
|
583
|
|
|
584 void eicpy_lstr_off (Eistring *eistr, Lisp_Object lisp_string,
|
|
|
585 Bytecount off, Charcount charoff,
|
|
|
586 Bytecount len, Charcount charlen);
|
|
|
587 ... from a section of a Lisp_Object string.
|
|
|
588 void eicpy_lbuf (Eistring *eistr, Lisp_Object lisp_buf,
|
|
|
589 Bytecount off, Charcount charoff,
|
|
|
590 Bytecount len, Charcount charlen);
|
|
|
591 ... from a section of a Lisp_Object buffer.
|
|
|
592 void eicpy_raw (Eistring *eistr, const Intbyte *data, Bytecount len);
|
|
|
593 ... from raw internal-format data in the default internal format.
|
|
|
594 void eicpy_rawz (Eistring *eistr, const Intbyte *data);
|
|
|
595 ... from raw internal-format data in the default internal format
|
|
|
596 that is "null-terminated" (the meaning of this depends on the nature
|
|
|
597 of the default internal format).
|
|
|
598 void eicpy_raw_fmt (Eistring *eistr, const Intbyte *data, Bytecount len,
|
|
|
599 Internal_Format intfmt);
|
|
|
600 ... from raw internal-format data in the specified format.
|
|
|
601 void eicpy_rawz_fmt (Eistring *eistr, const Intbyte *data,
|
|
|
602 Internal_Format intfmt);
|
|
|
603 ... from raw internal-format data in the specified format that is
|
|
|
604 "null-terminated" (the meaning of this depends on the nature of
|
|
|
605 the specific format).
|
|
|
606 void eicpy_c (Eistring *eistr, const Char_ASCII *c_string);
|
|
|
607 ... from an ASCII null-terminated string. Non-ASCII characters in
|
|
|
608 the string are *ILLEGAL* (read abort() with error-checking defined).
|
|
|
609 void eicpy_c_len (Eistring *eistr, const Char_ASCII *c_string, len);
|
|
|
610 ... from an ASCII string, with length specified. Non-ASCII characters
|
|
|
611 in the string are *ILLEGAL* (read abort() with error-checking defined).
|
|
|
612 void eicpy_ext (Eistring *eistr, const Extbyte *extdata,
|
|
|
613 Lisp_Object coding_system);
|
|
|
614 ... from external null-terminated data, with coding system specified.
|
|
|
615 void eicpy_ext_len (Eistring *eistr, const Extbyte *extdata,
|
|
|
616 Bytecount extlen, Lisp_Object coding_system);
|
|
|
617 ... from external data, with length and coding system specified.
|
|
|
618 void eicpy_lstream (Eistring *eistr, Lisp_Object lstream);
|
|
|
619 ... from an lstream; reads data till eof. Data must be in default
|
|
|
620 internal format; otherwise, interpose a decoding lstream.
|
|
|
621
|
|
|
622
|
|
|
623 **********************************************
|
|
|
624 * Getting the data out of the Eistring *
|
|
|
625 **********************************************
|
|
|
626
|
|
|
627 Intbyte *eidata (Eistring *eistr);
|
|
|
628 Return a pointer to the raw data in an Eistring. This is NOT
|
|
|
629 a copy.
|
|
|
630
|
|
|
631 Lisp_Object eimake_string (Eistring *eistr);
|
|
|
632 Make a Lisp string out of the Eistring.
|
|
|
633
|
|
|
634 Lisp_Object eimake_string_off (Eistring *eistr,
|
|
|
635 Bytecount off, Charcount charoff,
|
|
|
636 Bytecount len, Charcount charlen);
|
|
|
637 Make a Lisp string out of a section of the Eistring.
|
|
|
638
|
|
|
639 void eicpyout_alloca (Eistring *eistr, LVALUE: Intbyte *ptr_out,
|
|
|
640 LVALUE: Bytecount len_out);
|
|
|
641 Make an alloca() copy of the data in the Eistring, using the
|
|
|
642 default internal format. Due to the nature of alloca(), this
|
|
|
643 must be a macro, with all lvalues passed in as parameters.
|
|
793
|
644 (More specifically, not all compilers correctly handle using
|
|
|
645 alloca() as the argument to a function call -- GCC on x86
|
|
|
646 didn't used to, for example.) A pointer to the alloca()ed data
|
|
|
647 is stored in PTR_OUT, and the length of the data (not including
|
|
|
648 the terminating zero) is stored in LEN_OUT.
|
|
771
|
649
|
|
|
650 void eicpyout_alloca_fmt (Eistring *eistr, LVALUE: Intbyte *ptr_out,
|
|
|
651 LVALUE: Bytecount len_out,
|
|
|
652 Internal_Format intfmt);
|
|
|
653 Like eicpyout_alloca(), but converts to the specified internal
|
|
|
654 format. (No formats other than FORMAT_DEFAULT are currently
|
|
|
655 implemented, and you get an assertion failure if you try.)
|
|
|
656
|
|
|
657 Intbyte *eicpyout_malloc (Eistring *eistr, Bytecount *intlen_out);
|
|
|
658 Make a malloc() copy of the data in the Eistring, using the
|
|
|
659 default internal format. This is a real function. No lvalues
|
|
|
660 passed in. Returns the new data, and stores the length (not
|
|
|
661 including the terminating zero) using INTLEN_OUT, unless it's
|
|
|
662 a NULL pointer.
|
|
|
663
|
|
|
664 Intbyte *eicpyout_malloc_fmt (Eistring *eistr, Internal_Format intfmt,
|
|
|
665 Bytecount *intlen_out);
|
|
|
666 Like eicpyout_malloc(), but converts to the specified internal
|
|
|
667 format. (No formats other than FORMAT_DEFAULT are currently
|
|
|
668 implemented, and you get an assertion failure if you try.)
|
|
|
669
|
|
|
670
|
|
|
671 **********************************************
|
|
|
672 * Moving to the heap *
|
|
|
673 **********************************************
|
|
|
674
|
|
|
675 void eito_malloc (Eistring *eistr);
|
|
|
676 Move this Eistring to the heap. Its data will be stored in a
|
|
|
677 malloc()ed block rather than the stack. Subsequent changes to
|
|
|
678 this Eistring will realloc() the block as necessary. Use this
|
|
|
679 when you want the Eistring to remain in scope past the end of
|
|
|
680 this function call. You will have to manually free the data
|
|
|
681 in the Eistring using eifree().
|
|
|
682
|
|
|
683 void eito_alloca (Eistring *eistr);
|
|
|
684 Move this Eistring back to the stack, if it was moved to the
|
|
|
685 heap with eito_malloc(). This will automatically free any
|
|
|
686 heap-allocated data.
|
|
|
687
|
|
|
688
|
|
|
689
|
|
|
690 **********************************************
|
|
|
691 * Retrieving the length *
|
|
|
692 **********************************************
|
|
|
693
|
|
|
694 Bytecount eilen (Eistring *eistr);
|
|
|
695 Return the length of the internal data, in bytes. See also
|
|
|
696 eiextlen(), below.
|
|
|
697 Charcount eicharlen (Eistring *eistr);
|
|
|
698 Return the length of the internal data, in characters.
|
|
|
699
|
|
|
700
|
|
|
701 **********************************************
|
|
|
702 * Working with positions *
|
|
|
703 **********************************************
|
|
|
704
|
|
|
705 Bytecount eicharpos_to_bytepos (Eistring *eistr, Charcount charpos);
|
|
|
706 Convert a char offset to a byte offset.
|
|
|
707 Charcount eibytepos_to_charpos (Eistring *eistr, Bytecount bytepos);
|
|
|
708 Convert a byte offset to a char offset.
|
|
|
709 Bytecount eiincpos (Eistring *eistr, Bytecount bytepos);
|
|
|
710 Increment the given position by one character.
|
|
|
711 Bytecount eiincpos_n (Eistring *eistr, Bytecount bytepos, Charcount n);
|
|
|
712 Increment the given position by N characters.
|
|
|
713 Bytecount eidecpos (Eistring *eistr, Bytecount bytepos);
|
|
|
714 Decrement the given position by one character.
|
|
|
715 Bytecount eidecpos_n (Eistring *eistr, Bytecount bytepos, Charcount n);
|
|
|
716 Deccrement the given position by N characters.
|
|
|
717
|
|
|
718
|
|
|
719 **********************************************
|
|
|
720 * Getting the character at a position *
|
|
|
721 **********************************************
|
|
|
722
|
|
|
723 Emchar eigetch (Eistring *eistr, Bytecount bytepos);
|
|
|
724 Return the character at a particular byte offset.
|
|
|
725 Emchar eigetch_char (Eistring *eistr, Charcount charpos);
|
|
|
726 Return the character at a particular character offset.
|
|
|
727
|
|
|
728
|
|
|
729 **********************************************
|
|
|
730 * Setting the character at a position *
|
|
|
731 **********************************************
|
|
|
732
|
|
|
733 Emchar eisetch (Eistring *eistr, Bytecount bytepos, Emchar chr);
|
|
|
734 Set the character at a particular byte offset.
|
|
|
735 Emchar eisetch_char (Eistring *eistr, Charcount charpos, Emchar chr);
|
|
|
736 Set the character at a particular character offset.
|
|
|
737
|
|
|
738
|
|
|
739 **********************************************
|
|
|
740 * Concatenation *
|
|
|
741 **********************************************
|
|
|
742
|
|
|
743 void eicat_* (Eistring *eistr, ...);
|
|
|
744 Concatenate onto the end of the Eistring, with data coming from the
|
|
|
745 same places as above:
|
|
|
746
|
|
|
747 void eicat_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
748 ... from another Eistring.
|
|
|
749 void eicat_c (Eistring *eistr, Char_ASCII *c_string);
|
|
|
750 ... from an ASCII null-terminated string. Non-ASCII characters in
|
|
|
751 the string are *ILLEGAL* (read abort() with error-checking defined).
|
|
|
752 void eicat_raw (ei, const Intbyte *data, Bytecount len);
|
|
|
753 ... from raw internal-format data in the default internal format.
|
|
|
754 void eicat_rawz (ei, const Intbyte *data);
|
|
|
755 ... from raw internal-format data in the default internal format
|
|
|
756 that is "null-terminated" (the meaning of this depends on the nature
|
|
|
757 of the default internal format).
|
|
|
758 void eicat_lstr (ei, Lisp_Object lisp_string);
|
|
|
759 ... from a Lisp_Object string.
|
|
|
760 void eicat_ch (ei, Emchar ch);
|
|
|
761 ... from an Emchar.
|
|
|
762
|
|
|
763 (All except the first variety are convenience functions.
|
|
|
764 In the general case, create another Eistring from the source.)
|
|
|
765
|
|
|
766
|
|
|
767 **********************************************
|
|
|
768 * Replacement *
|
|
|
769 **********************************************
|
|
|
770
|
|
|
771 void eisub_* (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
772 Bytecount len, Charcount charlen, ...);
|
|
|
773 Replace a section of the Eistring, specifically:
|
|
|
774
|
|
|
775 void eisub_ei (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
776 Bytecount len, Charcount charlen, Eistring *eistr2);
|
|
|
777 ... with another Eistring.
|
|
|
778 void eisub_c (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
779 Bytecount len, Charcount charlen, Char_ASCII *c_string);
|
|
|
780 ... with an ASCII null-terminated string. Non-ASCII characters in
|
|
|
781 the string are *ILLEGAL* (read abort() with error-checking defined).
|
|
|
782 void eisub_ch (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
783 Bytecount len, Charcount charlen, Emchar ch);
|
|
|
784 ... with an Emchar.
|
|
|
785
|
|
|
786 void eidel (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
787 Bytecount len, Charcount charlen);
|
|
|
788 Delete a section of the Eistring.
|
|
|
789
|
|
|
790
|
|
|
791 **********************************************
|
|
|
792 * Converting to an external format *
|
|
|
793 **********************************************
|
|
|
794
|
|
|
795 void eito_external (Eistring *eistr, Lisp_Object coding_system);
|
|
|
796 Convert the Eistring to an external format and store the result
|
|
|
797 in the string. NOTE: Further changes to the Eistring will *NOT*
|
|
|
798 change the external data stored in the string. You will have to
|
|
|
799 call eito_external() again in such a case if you want the external
|
|
|
800 data.
|
|
|
801
|
|
|
802 Extbyte *eiextdata (Eistring *eistr);
|
|
|
803 Return a pointer to the external data stored in the Eistring as
|
|
|
804 a result of a prior call to eito_external().
|
|
|
805
|
|
|
806 Bytecount eiextlen (Eistring *eistr);
|
|
|
807 Return the length in bytes of the external data stored in the
|
|
|
808 Eistring as a result of a prior call to eito_external().
|
|
|
809
|
|
|
810
|
|
|
811 **********************************************
|
|
|
812 * Searching in the Eistring for a character *
|
|
|
813 **********************************************
|
|
|
814
|
|
|
815 Bytecount eichr (Eistring *eistr, Emchar chr);
|
|
|
816 Charcount eichr_char (Eistring *eistr, Emchar chr);
|
|
|
817 Bytecount eichr_off (Eistring *eistr, Emchar chr, Bytecount off,
|
|
|
818 Charcount charoff);
|
|
|
819 Charcount eichr_off_char (Eistring *eistr, Emchar chr, Bytecount off,
|
|
|
820 Charcount charoff);
|
|
|
821 Bytecount eirchr (Eistring *eistr, Emchar chr);
|
|
|
822 Charcount eirchr_char (Eistring *eistr, Emchar chr);
|
|
|
823 Bytecount eirchr_off (Eistring *eistr, Emchar chr, Bytecount off,
|
|
|
824 Charcount charoff);
|
|
|
825 Charcount eirchr_off_char (Eistring *eistr, Emchar chr, Bytecount off,
|
|
|
826 Charcount charoff);
|
|
|
827
|
|
|
828
|
|
|
829 **********************************************
|
|
|
830 * Searching in the Eistring for a string *
|
|
|
831 **********************************************
|
|
|
832
|
|
|
833 Bytecount eistr_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
834 Charcount eistr_ei_char (Eistring *eistr, Eistring *eistr2);
|
|
|
835 Bytecount eistr_ei_off (Eistring *eistr, Eistring *eistr2, Bytecount off,
|
|
|
836 Charcount charoff);
|
|
|
837 Charcount eistr_ei_off_char (Eistring *eistr, Eistring *eistr2,
|
|
|
838 Bytecount off, Charcount charoff);
|
|
|
839 Bytecount eirstr_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
840 Charcount eirstr_ei_char (Eistring *eistr, Eistring *eistr2);
|
|
|
841 Bytecount eirstr_ei_off (Eistring *eistr, Eistring *eistr2, Bytecount off,
|
|
|
842 Charcount charoff);
|
|
|
843 Charcount eirstr_ei_off_char (Eistring *eistr, Eistring *eistr2,
|
|
|
844 Bytecount off, Charcount charoff);
|
|
|
845
|
|
|
846 Bytecount eistr_c (Eistring *eistr, Char_ASCII *c_string);
|
|
|
847 Charcount eistr_c_char (Eistring *eistr, Char_ASCII *c_string);
|
|
|
848 Bytecount eistr_c_off (Eistring *eistr, Char_ASCII *c_string, Bytecount off,
|
|
|
849 Charcount charoff);
|
|
|
850 Charcount eistr_c_off_char (Eistring *eistr, Char_ASCII *c_string,
|
|
|
851 Bytecount off, Charcount charoff);
|
|
|
852 Bytecount eirstr_c (Eistring *eistr, Char_ASCII *c_string);
|
|
|
853 Charcount eirstr_c_char (Eistring *eistr, Char_ASCII *c_string);
|
|
|
854 Bytecount eirstr_c_off (Eistring *eistr, Char_ASCII *c_string,
|
|
|
855 Bytecount off, Charcount charoff);
|
|
|
856 Charcount eirstr_c_off_char (Eistring *eistr, Char_ASCII *c_string,
|
|
|
857 Bytecount off, Charcount charoff);
|
|
|
858
|
|
|
859
|
|
|
860 **********************************************
|
|
|
861 * Comparison *
|
|
|
862 **********************************************
|
|
|
863
|
|
|
864 int eicmp_* (Eistring *eistr, ...);
|
|
|
865 int eicmp_off_* (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
866 Bytecount len, Charcount charlen, ...);
|
|
|
867 int eicasecmp_* (Eistring *eistr, ...);
|
|
|
868 int eicasecmp_off_* (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
869 Bytecount len, Charcount charlen, ...);
|
|
|
870 int eicasecmp_i18n_* (Eistring *eistr, ...);
|
|
|
871 int eicasecmp_i18n_off_* (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
872 Bytecount len, Charcount charlen, ...);
|
|
|
873
|
|
|
874 Compare the Eistring with the other data. Return value same as
|
|
|
875 from strcmp. The `*' is either `ei' for another Eistring (in
|
|
|
876 which case `...' is an Eistring), or `c' for a pure-ASCII string
|
|
|
877 (in which case `...' is a pointer to that string). For anything
|
|
|
878 more complex, first create an Eistring out of the source.
|
|
|
879 Comparison is either simple (`eicmp_...'), ASCII case-folding
|
|
|
880 (`eicasecmp_...'), or multilingual case-folding
|
|
|
881 (`eicasecmp_i18n_...).
|
|
|
882
|
|
|
883
|
|
|
884 More specifically, the prototypes are:
|
|
|
885
|
|
|
886 int eicmp_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
887 int eicmp_off_ei (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
888 Bytecount len, Charcount charlen, Eistring *eistr2);
|
|
|
889 int eicasecmp_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
890 int eicasecmp_off_ei (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
891 Bytecount len, Charcount charlen, Eistring *eistr2);
|
|
|
892 int eicasecmp_i18n_ei (Eistring *eistr, Eistring *eistr2);
|
|
|
893 int eicasecmp_i18n_off_ei (Eistring *eistr, Bytecount off,
|
|
|
894 Charcount charoff, Bytecount len,
|
|
|
895 Charcount charlen, Eistring *eistr2);
|
|
|
896
|
|
|
897 int eicmp_c (Eistring *eistr, Char_ASCII *c_string);
|
|
|
898 int eicmp_off_c (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
899 Bytecount len, Charcount charlen, Char_ASCII *c_string);
|
|
|
900 int eicasecmp_c (Eistring *eistr, Char_ASCII *c_string);
|
|
|
901 int eicasecmp_off_c (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
902 Bytecount len, Charcount charlen,
|
|
|
903 Char_ASCII *c_string);
|
|
|
904 int eicasecmp_i18n_c (Eistring *eistr, Char_ASCII *c_string);
|
|
|
905 int eicasecmp_i18n_off_c (Eistring *eistr, Bytecount off, Charcount charoff,
|
|
|
906 Bytecount len, Charcount charlen,
|
|
|
907 Char_ASCII *c_string);
|
|
|
908
|
|
|
909
|
|
|
910 **********************************************
|
|
|
911 * Case-changing the Eistring *
|
|
|
912 **********************************************
|
|
|
913
|
|
|
914 void eilwr (Eistring *eistr);
|
|
|
915 Convert all characters in the Eistring to lowercase.
|
|
|
916 void eiupr (Eistring *eistr);
|
|
|
917 Convert all characters in the Eistring to uppercase.
|
|
|
918 */
|
|
|
919
|
|
|
920
|
|
|
921 /* Principles for writing Eistring functions:
|
|
|
922
|
|
|
923 (1) Unfortunately, we have to write most of the Eistring functions
|
|
|
924 as macros, because of the use of alloca(). The principle used
|
|
|
925 below to assure no conflict in local variables is to prefix all
|
|
|
926 local variables with "ei" plus a number, which should be unique
|
|
|
927 among macros. In practice, when finding a new number, find the
|
|
|
928 highest so far used, and add 1.
|
|
|
929
|
|
|
930 (2) We also suffix the Eistring fields with an _ to avoid problems
|
|
|
931 with macro parameters of the same name. (And as the standard
|
|
|
932 signal not to access these fields directly.)
|
|
|
933
|
|
|
934 (3) We maintain both the length in bytes and chars of the data in
|
|
|
935 the Eistring at all times, for convenient retrieval by outside
|
|
|
936 functions. That means when writing functions that manipulate
|
|
|
937 Eistrings, you too need to keep both lengths up to date for all
|
|
|
938 data that you work with.
|
|
|
939
|
|
|
940 (4) When writing a new type of operation (e.g. substitution), you
|
|
|
941 will often find yourself working with outside data, and thus
|
|
|
942 have a series of related API's, for different forms that the
|
|
|
943 outside data is in. Generally, you will want to choose a
|
|
|
944 subset of the forms supported by eicpy_*, which has to be
|
|
|
945 totally general because that's the fundamental way to get data
|
|
|
946 into an Eistring, and once the data is into the string, it
|
|
|
947 would be to create a whole series of Ei operations that work on
|
|
|
948 nothing but Eistrings. Although theoretically nice, in
|
|
|
949 practice it's a hassle, so we suggest that you provide
|
|
|
950 convenience functions. In particular, there are two paths you
|
|
|
951 can take. One is minimalist -- it only allows other Eistrings
|
|
|
952 and ASCII data, and Emchars if the particular operation makes
|
|
|
953 sense with a character. The other provides interfaces for the
|
|
|
954 most commonly-used forms -- Eistring, ASCII data, Lisp string,
|
|
|
955 raw internal-format string with length, raw internal-format
|
|
|
956 string without, and possibly Emchar. (In the function names,
|
|
|
957 these are designated `ei', `c', `lstr', `raw', `rawz', and
|
|
|
958 `ch', respectively.)
|
|
|
959
|
|
|
960 (5) When coding a new type of operation, such as was discussed in
|
|
|
961 previous section, the correct approach is to declare an worker
|
|
|
962 function that does the work of everything, and is called by the
|
|
|
963 other "container" macros that handle the different outside data
|
|
|
964 forms. The data coming into the worker function, which
|
|
|
965 typically ends in `_1', is in the form of three parameters:
|
|
|
966 DATA, LEN, CHARLEN. (See point [3] about having two lengths and
|
|
|
967 keeping them in sync.)
|
|
|
968
|
|
|
969 (6) Handling argument evaluation in macros: We take great care
|
|
|
970 never to evaluate any argument more than once in any macro,
|
|
|
971 except the initial Eistring parameter. This can and will be
|
|
|
972 evaluated multiple times, but it should pretty much always just
|
|
|
973 be a simple variable. This means, for example, that if an
|
|
|
974 Eistring is the second (not first) argument of a macro, it
|
|
|
975 doesn't fall under the "initial Eistring" exemption, so it
|
|
|
976 needs protection against multi-evaluation. (Take the address of
|
|
|
977 the Eistring structure, store in a temporary variable, and use
|
|
|
978 temporary variable for all access to the Eistring.
|
|
|
979 Essentially, we want it to appear as if these Eistring macros
|
|
|
980 are functions -- we would like to declare them as functions but
|
|
|
981 they use alloca(), so we can't (and we can't make them inline
|
|
|
982 functions either -- alloca() is explicitly disallowed in inline
|
|
|
983 functions.)
|
|
|
984
|
|
|
985 (7) Note that our rules regarding multiple evaluation are *more*
|
|
|
986 strict than the rules listed above under the heading "working
|
|
|
987 with raw internal-format data".
|
|
|
988 */
|
|
|
989
|
|
|
990
|
|
|
991 /* ----- Declaration ----- */
|
|
|
992
|
|
|
993 typedef struct
|
|
|
994 {
|
|
|
995 /* Data for the Eistring, stored in the default internal format.
|
|
|
996 Always includes terminating null. */
|
|
|
997 Intbyte *data_;
|
|
|
998 /* Total number of bytes allocated in DATA (including null). */
|
|
|
999 Bytecount max_size_allocated_;
|
|
|
1000 Bytecount bytelen_;
|
|
|
1001 Charcount charlen_;
|
|
|
1002 int mallocp_;
|
|
|
1003
|
|
|
1004 Extbyte *extdata_;
|
|
|
1005 Bytecount extlen_;
|
|
|
1006 } Eistring;
|
|
|
1007
|
|
|
1008 typedef enum internal_format
|
|
|
1009 {
|
|
|
1010 FORMAT_DEFAULT,
|
|
|
1011 FORMAT_FIXED_8,
|
|
|
1012 FORMAT_FIXED_16,
|
|
|
1013 FORMAT_FIXED_32
|
|
|
1014 } Internal_Format;
|
|
|
1015
|
|
|
1016 extern Eistring the_eistring_zero_init, the_eistring_malloc_zero_init;
|
|
|
1017
|
|
|
1018 #define DECLARE_EISTRING(name) \
|
|
|
1019 Eistring __ ## name ## __storage__ = the_eistring_zero_init; \
|
|
|
1020 Eistring *name = & __ ## name ## __storage__
|
|
|
1021 #define DECLARE_EISTRING_MALLOC(name) \
|
|
|
1022 Eistring __ ## name ## __storage__ = the_eistring_malloc_zero_init; \
|
|
|
1023 Eistring *name = & __ ## name ## __storage__
|
|
|
1024
|
|
|
1025 #define eiinit(ei) \
|
|
|
1026 do { \
|
|
793
|
1027 *(ei) = the_eistring_zero_init; \
|
|
771
|
1028 } while (0)
|
|
|
1029
|
|
|
1030 #define eiinit_malloc(ei) \
|
|
|
1031 do { \
|
|
793
|
1032 *(ei) = the_eistring_malloc_zero_init; \
|
|
771
|
1033 } while (0)
|
|
|
1034
|
|
|
1035
|
|
|
1036 /* ----- Utility ----- */
|
|
|
1037
|
|
|
1038 /* Make sure both LEN and CHARLEN are specified, in case one is given
|
|
|
1039 as -1. PTR evaluated at most once, others multiply. */
|
|
|
1040 #define eifixup_bytechar(ptr, len, charlen) \
|
|
|
1041 do { \
|
|
|
1042 if ((len) == -1) \
|
|
|
1043 (len) = charcount_to_bytecount (ptr, charlen); \
|
|
|
1044 else if ((charlen) == -1) \
|
|
|
1045 (charlen) = bytecount_to_charcount (ptr, len); \
|
|
|
1046 } while (0)
|
|
|
1047
|
|
|
1048 /* Make sure LEN is specified, in case it's is given as -1. PTR
|
|
|
1049 evaluated at most once, others multiply. */
|
|
|
1050 #define eifixup_byte(ptr, len, charlen) \
|
|
|
1051 do { \
|
|
|
1052 if ((len) == -1) \
|
|
|
1053 (len) = charcount_to_bytecount (ptr, charlen); \
|
|
|
1054 } while (0)
|
|
|
1055
|
|
|
1056 /* Make sure CHARLEN is specified, in case it's is given as -1. PTR
|
|
|
1057 evaluated at most once, others multiply. */
|
|
|
1058 #define eifixup_char(ptr, len, charlen) \
|
|
|
1059 do { \
|
|
|
1060 if ((charlen) == -1) \
|
|
|
1061 (charlen) = bytecount_to_charcount (ptr, len); \
|
|
|
1062 } while (0)
|
|
|
1063
|
|
|
1064
|
|
|
1065
|
|
|
1066 /* Make sure we can hold NEWBYTELEN bytes (which is NEWCHARLEN chars)
|
|
|
1067 plus a zero terminator. Preserve existing data as much as possible,
|
|
|
1068 including existing zero terminator. Put a new zero terminator where it
|
|
|
1069 should go if NEWZ if non-zero. All args but EI are evalled only once. */
|
|
|
1070
|
|
|
1071 #define EI_ALLOC(ei, newbytelen, newcharlen, newz) \
|
|
|
1072 do { \
|
|
|
1073 int ei1oldeibytelen = (ei)->bytelen_; \
|
|
|
1074 \
|
|
|
1075 (ei)->charlen_ = (newcharlen); \
|
|
|
1076 (ei)->bytelen_ = (newbytelen); \
|
|
|
1077 \
|
|
|
1078 if (ei1oldeibytelen != (ei)->bytelen_) \
|
|
|
1079 { \
|
|
|
1080 int ei1newsize = (ei)->max_size_allocated_; \
|
|
|
1081 while (ei1newsize < (ei)->bytelen_ + 1) \
|
|
|
1082 { \
|
|
|
1083 ei1newsize = (int) (ei1newsize * 1.5); \
|
|
|
1084 if (ei1newsize < 32) \
|
|
|
1085 ei1newsize = 32; \
|
|
|
1086 } \
|
|
|
1087 if (ei1newsize != (ei)->max_size_allocated_) \
|
|
|
1088 { \
|
|
|
1089 if ((ei)->mallocp_) \
|
|
|
1090 /* xrealloc always preserves existing data as much as possible */ \
|
|
|
1091 (ei)->data_ = (Intbyte *) xrealloc ((ei)->data_, ei1newsize); \
|
|
|
1092 else \
|
|
|
1093 { \
|
|
|
1094 /* We don't have realloc, so alloca() more space and copy the \
|
|
|
1095 data into it. */ \
|
|
|
1096 Intbyte *ei1oldeidata = (ei)->data_; \
|
|
|
1097 (ei)->data_ = (Intbyte *) alloca (ei1newsize); \
|
|
|
1098 if (ei1oldeidata) \
|
|
|
1099 memcpy ((ei)->data_, ei1oldeidata, ei1oldeibytelen + 1); \
|
|
|
1100 } \
|
|
|
1101 (ei)->max_size_allocated_ = ei1newsize; \
|
|
|
1102 } \
|
|
|
1103 if (newz) \
|
|
|
1104 (ei)->data_[(ei)->bytelen_] = '\0'; \
|
|
|
1105 } \
|
|
|
1106 } while (0)
|
|
|
1107
|
|
|
1108 #define EI_ALLOC_AND_COPY(ei, data, bytelen, charlen) \
|
|
|
1109 do { \
|
|
|
1110 EI_ALLOC (ei, bytelen, charlen, 1); \
|
|
|
1111 memcpy ((ei)->data_, data, (ei)->bytelen_); \
|
|
|
1112 } while (0)
|
|
|
1113
|
|
800
|
1114 #ifdef ERROR_CHECK_TEXT
|
|
771
|
1115 #define EI_ASSERT_ASCII(ptr, len) \
|
|
|
1116 do { \
|
|
|
1117 int ei5; \
|
|
|
1118 const Char_ASCII *ei5ptr = (ptr); \
|
|
|
1119 int ei5len = (len); \
|
|
|
1120 \
|
|
|
1121 for (ei5 = 0; ei5 < ei5len; ei5++) \
|
|
|
1122 assert (ei5ptr[ei5] >= 0x00 && ei5ptr[ei5] < 0x7F); \
|
|
|
1123 } while (0)
|
|
|
1124 #define EI_ASSERT_ASCIIZ(ptr) \
|
|
|
1125 do { \
|
|
|
1126 const Char_ASCII *ei5p1 = (ptr); \
|
|
|
1127 EI_ASSERT_ASCII (ei5p1, strlen (ei5p1)); \
|
|
|
1128 } while (0)
|
|
|
1129 #else
|
|
|
1130 #define EI_ASSERT_ASCII(ptr, len)
|
|
|
1131 #define EI_ASSERT_ASCIIZ(ptr)
|
|
|
1132 #endif
|
|
|
1133
|
|
|
1134
|
|
|
1135 /* ----- Initialization ----- */
|
|
|
1136
|
|
|
1137 #define eicpy_ei(ei, eicpy) \
|
|
|
1138 do { \
|
|
|
1139 const Eistring *ei2 = (eicpy); \
|
|
|
1140 EI_ALLOC_AND_COPY (ei, ei2->data_, ei2->bytelen_, ei2->charlen_); \
|
|
|
1141 } while (0)
|
|
|
1142
|
|
|
1143 #define eicpy_lstr(ei, lisp_string) \
|
|
|
1144 do { \
|
|
|
1145 Lisp_Object ei3 = (lisp_string); \
|
|
|
1146 EI_ALLOC_AND_COPY (ei, XSTRING_DATA (ei3), XSTRING_LENGTH (ei3), \
|
|
|
1147 XSTRING_CHAR_LENGTH (ei3)); \
|
|
|
1148 } while (0)
|
|
|
1149
|
|
|
1150 #define eicpy_lstr_off(ei, lisp_string, off, charoff, len, charlen) \
|
|
|
1151 do { \
|
|
|
1152 Lisp_Object ei23lstr = (lisp_string); \
|
|
|
1153 int ei23off = (off); \
|
|
|
1154 int ei23charoff = (charoff); \
|
|
|
1155 int ei23len = (len); \
|
|
|
1156 int ei23charlen = (charlen); \
|
|
|
1157 const Intbyte *ei23data = XSTRING_DATA (ei23lstr); \
|
|
|
1158 \
|
|
|
1159 int ei23oldbytelen = (ei)->bytelen_; \
|
|
|
1160 \
|
|
|
1161 eifixup_byte (ei23data, ei23off, ei23charoff); \
|
|
|
1162 eifixup_bytechar (ei23data + ei23off, ei23len, ei23charlen); \
|
|
|
1163 \
|
|
|
1164 EI_ALLOC_AND_COPY (ei, ei23data + ei23off, ei23len, ei23charlen); \
|
|
|
1165 } while (0)
|
|
|
1166
|
|
|
1167 #define eicpy_raw_fmt(ei, ptr, len, fmt) \
|
|
|
1168 do { \
|
|
|
1169 const Intbyte *ei12ptr = (ptr); \
|
|
|
1170 Internal_Format ei12fmt = (fmt); \
|
|
|
1171 int ei12len = (len); \
|
|
|
1172 assert (ei12fmt == FORMAT_DEFAULT); \
|
|
|
1173 EI_ALLOC_AND_COPY (ei, ei12ptr, ei12len, \
|
|
|
1174 bytecount_to_charcount (ei12ptr, ei12len)); \
|
|
|
1175 } while (0)
|
|
|
1176
|
|
|
1177 #define eicpy_raw(ei, ptr, len) eicpy_raw_fmt (ei, ptr, len, FORMAT_DEFAULT)
|
|
|
1178
|
|
|
1179 #define eicpy_rawz_fmt(ei, ptr, fmt) \
|
|
|
1180 do { \
|
|
|
1181 const Intbyte *ei12p1ptr = (ptr); \
|
|
|
1182 Internal_Format ei12p1fmt = (fmt); \
|
|
|
1183 assert (ei12p1fmt == FORMAT_DEFAULT); \
|
|
|
1184 eicpy_raw_fmt (ei, ei12p1ptr, qxestrlen (ei12p1ptr), fmt); \
|
|
|
1185 } while (0)
|
|
|
1186
|
|
|
1187 #define eicpy_rawz(ei, ptr) eicpy_rawz_fmt (ei, ptr, FORMAT_DEFAULT)
|
|
|
1188
|
|
|
1189 #define eicpy_ch(ei, ch) \
|
|
|
1190 do { \
|
|
|
1191 Intbyte ei12p2[MAX_EMCHAR_LEN]; \
|
|
|
1192 Bytecount ei12p2len = set_charptr_emchar (ei12p2, ch); \
|
|
|
1193 EI_ALLOC_AND_COPY (ei, ei12p2, ei12p2len, 1); \
|
|
|
1194 } while (0)
|
|
|
1195
|
|
|
1196 #define eicpy_c(ei, c_string) \
|
|
|
1197 do { \
|
|
|
1198 const Char_ASCII *ei4 = (c_string); \
|
|
|
1199 \
|
|
|
1200 EI_ASSERT_ASCIIZ (ei4); \
|
|
|
1201 eicpy_ext (ei, ei4, Qbinary); \
|
|
|
1202 } while (0)
|
|
|
1203
|
|
|
1204 #define eicpy_c_len(ei, c_string, c_len) \
|
|
|
1205 do { \
|
|
|
1206 const Char_ASCII *ei6 = (c_string); \
|
|
|
1207 int ei6len = (c_len); \
|
|
|
1208 \
|
|
|
1209 EI_ASSERT_ASCII (ei6, ei6len); \
|
|
|
1210 eicpy_ext_len (ei, ei6, ei6len, Qbinary); \
|
|
|
1211 } while (0)
|
|
|
1212
|
|
|
1213 #define eicpy_ext_len(ei, extdata, extlen, coding_system) \
|
|
|
1214 do { \
|
|
|
1215 const Extbyte *ei7 = (extdata); \
|
|
|
1216 int ei7len = (extlen); \
|
|
|
1217 \
|
|
|
1218 TO_INTERNAL_FORMAT (DATA, (ei7, ei7len), \
|
|
|
1219 ALLOCA, ((ei)->data_, (ei)->bytelen_), \
|
|
|
1220 coding_system); \
|
|
|
1221 (ei)->max_size_allocated_ = (ei)->bytelen_ + 1; \
|
|
|
1222 (ei)->charlen_ = bytecount_to_charcount ((ei)->data_, (ei)->bytelen_); \
|
|
|
1223 } while (0)
|
|
|
1224
|
|
|
1225 #define eicpy_ext(ei, extdata, coding_system) \
|
|
|
1226 do { \
|
|
|
1227 const Extbyte *ei8 = (extdata); \
|
|
|
1228 \
|
|
|
1229 eicpy_ext_len (ei, ei8, dfc_external_data_len (ei8, coding_system), \
|
|
|
1230 coding_system); \
|
|
|
1231 } while (0)
|
|
|
1232
|
|
|
1233 #define eicpy_lbuf(eistr, lisp_buf, off, charoff, len, charlen) \
|
|
|
1234 NOT YET IMPLEMENTED
|
|
|
1235
|
|
|
1236 #define eicpy_lstream(eistr, lstream) \
|
|
|
1237 NOT YET IMPLEMENTED
|
|
|
1238
|
|
|
1239 #define eireset(eistr) eicpy_rawz (eistr, (Intbyte *) "")
|
|
|
1240
|
|
|
1241 /* ----- Getting the data out of the Eistring ----- */
|
|
|
1242
|
|
|
1243 #define eidata(ei) ((ei)->data_)
|
|
|
1244
|
|
|
1245 #define eimake_string(ei) make_string (eidata (ei), eilen (ei))
|
|
|
1246
|
|
|
1247 #define eimake_string_off(eistr, off, charoff, len, charlen) \
|
|
|
1248 do { \
|
|
|
1249 Lisp_Object ei24lstr; \
|
|
|
1250 int ei24off = (off); \
|
|
|
1251 int ei24charoff = (charoff); \
|
|
|
1252 int ei24len = (len); \
|
|
|
1253 int ei24charlen = (charlen); \
|
|
|
1254 \
|
|
|
1255 eifixup_byte ((eistr)->data_, ei24off, ei24charoff); \
|
|
|
1256 eifixup_byte ((eistr)->data_ + ei24off, ei24len, ei24charlen); \
|
|
|
1257 \
|
|
|
1258 return make_string ((eistr)->data_ + ei24off, ei24len); \
|
|
|
1259 } while (0)
|
|
|
1260
|
|
|
1261 #define eicpyout_alloca(eistr, ptrout, lenout) \
|
|
|
1262 eicpyout_alloca_fmt (eistr, ptrout, lenout, FORMAT_DEFAULT)
|
|
|
1263 #define eicpyout_malloc(eistr, lenout) \
|
|
|
1264 eicpyout_malloc_fmt (eistr, lenout, FORMAT_DEFAULT)
|
|
|
1265 Intbyte *eicpyout_malloc_fmt (Eistring *eistr, Bytecount *len_out,
|
|
|
1266 Internal_Format fmt);
|
|
|
1267 #define eicpyout_alloca_fmt(eistr, ptrout, lenout, fmt) \
|
|
|
1268 do { \
|
|
|
1269 Internal_Format ei23fmt = (fmt); \
|
|
|
1270 Intbyte *ei23ptrout = &(ptrout); \
|
|
|
1271 Bytecount *ei23lenout = &(lenout); \
|
|
|
1272 \
|
|
|
1273 assert (ei23fmt == FORMAT_DEFAULT); \
|
|
|
1274 \
|
|
|
1275 *ei23lenout = (eistr)->bytelen_; \
|
|
|
1276 *ei23ptrout = alloca_array (Intbyte, (eistr)->bytelen_ + 1); \
|
|
|
1277 memcpy (*ei23ptrout, (eistr)->data_, (eistr)->bytelen_ + 1); \
|
|
|
1278 } while (0)
|
|
|
1279
|
|
|
1280 /* ----- Moving to the heap ----- */
|
|
|
1281
|
|
|
1282 #define eifree(ei) \
|
|
|
1283 do { \
|
|
|
1284 if ((ei)->mallocp_) \
|
|
|
1285 { \
|
|
|
1286 if ((ei)->data_) \
|
|
|
1287 xfree ((ei)->data_); \
|
|
|
1288 if ((ei)->extdata_) \
|
|
|
1289 xfree ((ei)->extdata_); \
|
|
|
1290 eiinit_malloc (ei); \
|
|
|
1291 } \
|
|
|
1292 else \
|
|
|
1293 eiinit (ei); \
|
|
|
1294 } while (0)
|
|
|
1295
|
|
|
1296 int eifind_large_enough_buffer (int oldbufsize, int needed_size);
|
|
|
1297 void eito_malloc_1 (Eistring *ei);
|
|
|
1298
|
|
|
1299 #define eito_malloc(ei) eito_malloc_1 (ei)
|
|
|
1300
|
|
|
1301 #define eito_alloca(ei) \
|
|
|
1302 do { \
|
|
|
1303 if (!(ei)->mallocp_) \
|
|
|
1304 return; \
|
|
|
1305 (ei)->mallocp_ = 0; \
|
|
|
1306 if ((ei)->data_) \
|
|
|
1307 { \
|
|
|
1308 Intbyte *ei13newdata; \
|
|
|
1309 \
|
|
|
1310 (ei)->max_size_allocated_ = \
|
|
|
1311 eifind_large_enough_buffer (0, (ei)->bytelen_ + 1); \
|
|
|
1312 ei13newdata = (Intbyte *) alloca ((ei)->max_size_allocated_); \
|
|
|
1313 memcpy (ei13newdata, (ei)->data_, (ei)->bytelen_ + 1); \
|
|
|
1314 xfree ((ei)->data_); \
|
|
|
1315 (ei)->data_ = ei13newdata; \
|
|
|
1316 } \
|
|
|
1317 \
|
|
|
1318 if ((ei)->extdata_) \
|
|
|
1319 { \
|
|
|
1320 Extbyte *ei13newdata = (Extbyte *) alloca ((ei)->extlen_ + 2); \
|
|
|
1321 \
|
|
|
1322 memcpy (ei13newdata, (ei)->extdata_, (ei)->extlen_); \
|
|
|
1323 /* Double null-terminate in case of Unicode data */ \
|
|
|
1324 ei13newdata[(ei)->extlen_] = '\0'; \
|
|
|
1325 ei13newdata[(ei)->extlen_ + 1] = '\0'; \
|
|
|
1326 xfree ((ei)->extdata_); \
|
|
|
1327 (ei)->extdata_ = ei13newdata; \
|
|
|
1328 } \
|
|
|
1329 } while (0)
|
|
|
1330
|
|
|
1331
|
|
|
1332 /* ----- Retrieving the length ----- */
|
|
|
1333
|
|
|
1334 #define eilen(ei) ((ei)->bytelen_)
|
|
|
1335 #define eicharlen(ei) ((ei)->charlen_)
|
|
|
1336
|
|
|
1337
|
|
|
1338 /* ----- Working with positions ----- */
|
|
|
1339
|
|
|
1340 #define eicharpos_to_bytepos(ei, charpos) \
|
|
|
1341 charcount_to_bytecount ((ei)->data_, charpos)
|
|
|
1342 #define eibytepos_to_charpos(ei, bytepos) \
|
|
|
1343 bytecount_to_charcount ((ei)->data_, bytepos)
|
|
|
1344
|
|
|
1345 DECLARE_INLINE_HEADER (Bytecount eiincpos_1 (Eistring *eistr,
|
|
|
1346 Bytecount bytepos,
|
|
|
1347 Charcount n))
|
|
|
1348 {
|
|
|
1349 Intbyte *pos = eistr->data_ + bytepos;
|
|
|
1350 int i;
|
|
|
1351
|
|
800
|
1352 text_checking_assert (bytepos >= 0 && bytepos <= eistr->bytelen_);
|
|
|
1353 text_checking_assert (n >= 0 && n <= eistr->charlen_);
|
|
771
|
1354 /* We could check N more correctly now, but that would require a
|
|
|
1355 call to bytecount_to_charcount(), which would be needlessly
|
|
|
1356 expensive (it would convert O(N) algorithms into O(N^2) algorithms
|
|
800
|
1357 with ERROR_CHECK_TEXT, which would be bad). If N is bad, we are
|
|
771
|
1358 guaranteed to catch it either inside INC_CHARPTR() or in the check
|
|
|
1359 below. */
|
|
|
1360 for (i = 0; i < n; i++)
|
|
|
1361 INC_CHARPTR (pos);
|
|
800
|
1362 text_checking_assert (pos - eistr->data_ <= eistr->bytelen_);
|
|
771
|
1363 return pos - eistr->data_;
|
|
|
1364 }
|
|
|
1365
|
|
|
1366 #define eiincpos (ei, bytepos) eiincpos_1 (ei, bytepos, 1)
|
|
|
1367 #define eiincpos_n (ei, bytepos, n) eiincpos_1 (ei, bytepos, n)
|
|
|
1368
|
|
|
1369 DECLARE_INLINE_HEADER (Bytecount eidecpos_1 (Eistring *eistr,
|
|
|
1370 Bytecount bytepos,
|
|
|
1371 Charcount n))
|
|
|
1372 {
|
|
|
1373 Intbyte *pos = eistr->data_ + bytepos;
|
|
|
1374 int i;
|
|
|
1375
|
|
800
|
1376 text_checking_assert (bytepos >= 0 && bytepos <= eistr->bytelen_);
|
|
|
1377 text_checking_assert (n >= 0 && n <= eistr->charlen_);
|
|
771
|
1378 /* We could check N more correctly now, but ... see above. */
|
|
|
1379 for (i = 0; i < n; i++)
|
|
|
1380 DEC_CHARPTR (pos);
|
|
800
|
1381 text_checking_assert (pos - eistr->data_ <= eistr->bytelen_);
|
|
771
|
1382 return pos - eistr->data_;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385 #define eidecpos (ei, bytepos) eidecpos_1 (ei, bytepos, 1)
|
|
|
1386 #define eidecpos_n (ei, bytepos, n) eidecpos_1 (ei, bytepos, n)
|
|
|
1387
|
|
|
1388
|
|
|
1389 /* ----- Getting the character at a position ----- */
|
|
|
1390
|
|
|
1391 #define eigetch(ei, bytepos) \
|
|
|
1392 charptr_emchar ((ei)->data_ + (bytepos))
|
|
|
1393 #define eigetch_char(ei, charpos) charptr_emchar_n ((ei)->data_, charpos)
|
|
|
1394
|
|
|
1395
|
|
|
1396 /* ----- Setting the character at a position ----- */
|
|
|
1397
|
|
|
1398 #define eisetch(ei, bytepos, chr) \
|
|
|
1399 eisub_ch (ei, bytepos, -1, -1, 1, chr)
|
|
|
1400 #define eisetch_char(ei, charpos, chr) \
|
|
|
1401 eisub_ch (ei, -1, charpos, -1, 1, chr)
|
|
|
1402
|
|
|
1403
|
|
|
1404 /* ----- Concatenation ----- */
|
|
|
1405
|
|
|
1406 #define eicat_1(ei, data, bytelen, charlen) \
|
|
|
1407 do { \
|
|
|
1408 int ei14oldeibytelen = (ei)->bytelen_; \
|
|
|
1409 int ei14bytelen = (bytelen); \
|
|
|
1410 EI_ALLOC (ei, (ei)->bytelen_ + ei14bytelen, \
|
|
|
1411 (ei)->charlen_ + (charlen), 1); \
|
|
|
1412 memcpy ((ei)->data_ + ei14oldeibytelen, (data), \
|
|
|
1413 ei14bytelen); \
|
|
|
1414 } while (0)
|
|
|
1415
|
|
|
1416 #define eicat_ei(ei, ei2) \
|
|
|
1417 do { \
|
|
|
1418 const Eistring *ei9 = (ei2); \
|
|
|
1419 eicat_1 (ei, ei9->data_, ei9->bytelen_, ei9->charlen_); \
|
|
|
1420 } while (0)
|
|
|
1421
|
|
|
1422 #define eicat_c(ei, c_string) \
|
|
|
1423 do { \
|
|
|
1424 const Char_ASCII *ei15 = (c_string); \
|
|
|
1425 int ei15len = strlen (ei15); \
|
|
|
1426 \
|
|
|
1427 EI_ASSERT_ASCII (ei15, ei15len); \
|
|
|
1428 eicat_1 (ei, ei15, ei15len, \
|
|
|
1429 bytecount_to_charcount ((Intbyte *) ei15, ei15len)); \
|
|
|
1430 } while (0)
|
|
|
1431
|
|
|
1432 #define eicat_raw(ei, data, len) \
|
|
|
1433 do { \
|
|
|
1434 int ei16len = (len); \
|
|
|
1435 const Intbyte *ei16data = (data); \
|
|
|
1436 eicat_1 (ei, ei16data, ei16len, \
|
|
|
1437 bytecount_to_charcount (ei16data, ei16len)); \
|
|
|
1438 } while (0)
|
|
|
1439
|
|
|
1440 #define eicat_rawz(ei, ptr) \
|
|
|
1441 do { \
|
|
|
1442 const Intbyte *ei16p5ptr = (ptr); \
|
|
|
1443 eicat_raw (ei, ei16p5ptr, qxestrlen (ei16p5ptr)); \
|
|
|
1444 } while (0)
|
|
|
1445
|
|
|
1446 #define eicat_lstr(ei, lisp_string) \
|
|
|
1447 do { \
|
|
|
1448 Lisp_Object ei17 = (lisp_string); \
|
|
|
1449 eicat_1 (ei, XSTRING_DATA (ei17), XSTRING_LENGTH (ei17), \
|
|
|
1450 XSTRING_CHAR_LENGTH (ei17)); \
|
|
|
1451 } while (0)
|
|
|
1452
|
|
|
1453 #define eicat_ch(ei, ch) \
|
|
|
1454 do { \
|
|
|
1455 Intbyte ei22ch[MAX_EMCHAR_LEN]; \
|
|
|
1456 Bytecount ei22len = set_charptr_emchar (ei22ch, ch); \
|
|
|
1457 eicat_1 (ei, ei22ch, ei22len, 1); \
|
|
|
1458 } while (0)
|
|
|
1459
|
|
|
1460
|
|
|
1461 /* ----- Replacement ----- */
|
|
|
1462
|
|
|
1463 /* Replace the section of an Eistring at (OFF, LEN) with the data at
|
|
|
1464 SRC of length LEN. All positions have corresponding character values,
|
|
|
1465 and either can be -1 -- it will be computed from the other. */
|
|
|
1466
|
|
|
1467 #define eisub_1(ei, off, charoff, len, charlen, src, srclen, srccharlen) \
|
|
|
1468 do { \
|
|
|
1469 int ei18off = (off); \
|
|
|
1470 int ei18charoff = (charoff); \
|
|
|
1471 int ei18len = (len); \
|
|
|
1472 int ei18charlen = (charlen); \
|
|
|
1473 Intbyte *ei18src = (Intbyte *) (src); \
|
|
|
1474 int ei18srclen = (srclen); \
|
|
|
1475 int ei18srccharlen = (srccharlen); \
|
|
|
1476 \
|
|
|
1477 int ei18oldeibytelen = (ei)->bytelen_; \
|
|
|
1478 \
|
|
|
1479 eifixup_bytechar ((ei)->data_, ei18off, ei18charoff); \
|
|
|
1480 eifixup_bytechar ((ei)->data_ + ei18off, ei18len, ei18charlen); \
|
|
|
1481 eifixup_bytechar (ei18src, ei18srclen, ei18srccharlen); \
|
|
|
1482 \
|
|
|
1483 EI_ALLOC (ei, (ei)->bytelen_ + ei18srclen - ei18len, \
|
|
|
1484 (ei)->charlen_ + ei18srccharlen - ei18charlen, 0); \
|
|
|
1485 if (ei18len != ei18srclen) \
|
|
|
1486 memmove ((ei)->data_ + ei18off + ei18srclen, \
|
|
|
1487 (ei)->data_ + ei18off + ei18len, \
|
|
|
1488 /* include zero terminator. */ \
|
|
|
1489 ei18oldeibytelen - (ei18off + ei18len) + 1); \
|
|
|
1490 if (ei18srclen > 0) \
|
|
|
1491 memcpy ((ei)->data_ + ei18off, ei18src, ei18srclen); \
|
|
|
1492 } while (0)
|
|
|
1493
|
|
|
1494 #define eisub_ei(ei, off, charoff, len, charlen, ei2) \
|
|
|
1495 do { \
|
|
|
1496 const Eistring *ei19 = (ei2); \
|
|
|
1497 eisub_1 (ei, off, charoff, len, charlen, ei19->data_, ei19->bytelen_, \
|
|
|
1498 ei19->charlen_); \
|
|
|
1499 } while (0)
|
|
|
1500
|
|
|
1501 #define eisub_c(ei, off, charoff, len, charlen, c_string) \
|
|
|
1502 do { \
|
|
|
1503 const Char_ASCII *ei20 = (c_string); \
|
|
|
1504 int ei20len = strlen (ei20); \
|
|
|
1505 EI_ASSERT_ASCII (ei20, ei20len); \
|
|
|
1506 eisub_1 (ei, off, charoff, len, charlen, ei20, ei20len, -1); \
|
|
|
1507 } while (0)
|
|
|
1508
|
|
|
1509 #define eisub_ch(ei, off, charoff, len, charlen, ch) \
|
|
|
1510 do { \
|
|
|
1511 Intbyte ei21ch[MAX_EMCHAR_LEN]; \
|
|
|
1512 Bytecount ei21len = set_charptr_emchar (ei21ch, ch); \
|
|
|
1513 eisub_1 (ei, off, charoff, len, charlen, ei21ch, ei21len, 1); \
|
|
|
1514 } while (0)
|
|
|
1515
|
|
|
1516 #define eidel(ei, off, charoff, len, charlen) \
|
|
|
1517 eisub_1(ei, off, charoff, len, charlen, NULL, 0, 0)
|
|
|
1518
|
|
|
1519
|
|
|
1520 /* ----- Converting to an external format ----- */
|
|
|
1521
|
|
|
1522 #define eito_external(ei, coding_system) \
|
|
|
1523 do { \
|
|
|
1524 if ((ei)->mallocp_) \
|
|
|
1525 { \
|
|
|
1526 if ((ei)->extdata_) \
|
|
|
1527 { \
|
|
|
1528 xfree ((ei)->extdata_); \
|
|
|
1529 (ei)->extdata_ = 0; \
|
|
|
1530 } \
|
|
|
1531 TO_EXTERNAL_FORMAT (DATA, ((ei)->data_, (ei)->bytelen_), \
|
|
|
1532 MALLOC, ((ei)->extdata_, (ei)->extlen_), \
|
|
|
1533 coding_system); \
|
|
|
1534 } \
|
|
|
1535 else \
|
|
|
1536 TO_EXTERNAL_FORMAT (DATA, ((ei)->data_, (ei)->bytelen_), \
|
|
|
1537 ALLOCA, ((ei)->extdata_, (ei)->extlen_), \
|
|
|
1538 coding_system); \
|
|
|
1539 } while (0)
|
|
|
1540
|
|
|
1541 #define eiextdata(ei) ((ei)->extdata_)
|
|
|
1542 #define eiextlen(ei) ((ei)->extlen_)
|
|
|
1543
|
|
|
1544
|
|
|
1545 /* ----- Searching in the Eistring for a character ----- */
|
|
|
1546
|
|
|
1547 #define eichr(eistr, chr) \
|
|
|
1548 NOT YET IMPLEMENTED
|
|
|
1549 #define eichr_char(eistr, chr) \
|
|
|
1550 NOT YET IMPLEMENTED
|
|
|
1551 #define eichr_off(eistr, chr, off, charoff) \
|
|
|
1552 NOT YET IMPLEMENTED
|
|
|
1553 #define eichr_off_char(eistr, chr, off, charoff) \
|
|
|
1554 NOT YET IMPLEMENTED
|
|
|
1555 #define eirchr(eistr, chr) \
|
|
|
1556 NOT YET IMPLEMENTED
|
|
|
1557 #define eirchr_char(eistr, chr) \
|
|
|
1558 NOT YET IMPLEMENTED
|
|
|
1559 #define eirchr_off(eistr, chr, off, charoff) \
|
|
|
1560 NOT YET IMPLEMENTED
|
|
|
1561 #define eirchr_off_char(eistr, chr, off, charoff) \
|
|
|
1562 NOT YET IMPLEMENTED
|
|
|
1563
|
|
|
1564
|
|
|
1565 /* ----- Searching in the Eistring for a string ----- */
|
|
|
1566
|
|
|
1567 #define eistr_ei(eistr, eistr2) \
|
|
|
1568 NOT YET IMPLEMENTED
|
|
|
1569 #define eistr_ei_char(eistr, eistr2) \
|
|
|
1570 NOT YET IMPLEMENTED
|
|
|
1571 #define eistr_ei_off(eistr, eistr2, off, charoff) \
|
|
|
1572 NOT YET IMPLEMENTED
|
|
|
1573 #define eistr_ei_off_char(eistr, eistr2, off, charoff) \
|
|
|
1574 NOT YET IMPLEMENTED
|
|
|
1575 #define eirstr_ei(eistr, eistr2) \
|
|
|
1576 NOT YET IMPLEMENTED
|
|
|
1577 #define eirstr_ei_char(eistr, eistr2) \
|
|
|
1578 NOT YET IMPLEMENTED
|
|
|
1579 #define eirstr_ei_off(eistr, eistr2, off, charoff) \
|
|
|
1580 NOT YET IMPLEMENTED
|
|
|
1581 #define eirstr_ei_off_char(eistr, eistr2, off, charoff) \
|
|
|
1582 NOT YET IMPLEMENTED
|
|
|
1583
|
|
|
1584 #define eistr_c(eistr, c_string) \
|
|
|
1585 NOT YET IMPLEMENTED
|
|
|
1586 #define eistr_c_char(eistr, c_string) \
|
|
|
1587 NOT YET IMPLEMENTED
|
|
|
1588 #define eistr_c_off(eistr, c_string, off, charoff) \
|
|
|
1589 NOT YET IMPLEMENTED
|
|
|
1590 #define eistr_c_off_char(eistr, c_string, off, charoff) \
|
|
|
1591 NOT YET IMPLEMENTED
|
|
|
1592 #define eirstr_c(eistr, c_string) \
|
|
|
1593 NOT YET IMPLEMENTED
|
|
|
1594 #define eirstr_c_char(eistr, c_string) \
|
|
|
1595 NOT YET IMPLEMENTED
|
|
|
1596 #define eirstr_c_off(eistr, c_string, off, charoff) \
|
|
|
1597 NOT YET IMPLEMENTED
|
|
|
1598 #define eirstr_c_off_char(eistr, c_string, off, charoff) \
|
|
|
1599 NOT YET IMPLEMENTED
|
|
|
1600
|
|
|
1601
|
|
|
1602 /* ----- Comparison ----- */
|
|
|
1603
|
|
|
1604 int eicmp_1 (Eistring *ei, Bytecount off, Charcount charoff,
|
|
|
1605 Bytecount len, Charcount charlen, const Intbyte *data,
|
|
|
1606 const Eistring *ei2, int is_c, int fold_case);
|
|
|
1607
|
|
|
1608 #define eicmp_ei(eistr, eistr2) \
|
|
|
1609 eicmp_1 (eistr, 0, -1, -1, -1, 0, eistr2, 0, 0)
|
|
|
1610 #define eicmp_off_ei(eistr, off, charoff, len, charlen, eistr2) \
|
|
|
1611 eicmp_1 (eistr, off, charoff, len, charlen, 0, eistr2, 0, 0)
|
|
|
1612 #define eicasecmp_ei(eistr, eistr2) \
|
|
|
1613 eicmp_1 (eistr, 0, -1, -1, -1, 0, eistr2, 0, 1)
|
|
|
1614 #define eicasecmp_off_ei(eistr, off, charoff, len, charlen, eistr2) \
|
|
|
1615 eicmp_1 (eistr, off, charoff, len, charlen, 0, eistr2, 0, 1)
|
|
|
1616 #define eicasecmp_i18n_ei(eistr, eistr2) \
|
|
|
1617 eicmp_1 (eistr, 0, -1, -1, -1, 0, eistr2, 0, 2)
|
|
|
1618 #define eicasecmp_i18n_off_ei(eistr, off, charoff, len, charlen, eistr2) \
|
|
|
1619 eicmp_1 (eistr, off, charoff, len, charlen, 0, eistr2, 0, 2)
|
|
|
1620
|
|
|
1621 #define eicmp_c(eistr, c_string) \
|
|
|
1622 eicmp_1 (eistr, 0, -1, -1, -1, c_string, 0, 1, 0)
|
|
|
1623 #define eicmp_off_c(eistr, off, charoff, len, charlen, c_string) \
|
|
|
1624 eicmp_1 (eistr, off, charoff, len, charlen, c_string, 0, 1, 0)
|
|
|
1625 #define eicasecmp_c(eistr, c_string) \
|
|
|
1626 eicmp_1 (eistr, 0, -1, -1, -1, c_string, 0, 1, 1)
|
|
|
1627 #define eicasecmp_off_c(eistr, off, charoff, len, charlen, c_string) \
|
|
|
1628 eicmp_1 (eistr, off, charoff, len, charlen, c_string, 0, 1, 1)
|
|
|
1629 #define eicasecmp_i18n_c(eistr, c_string) \
|
|
|
1630 eicmp_1 (eistr, 0, -1, -1, -1, c_string, 0, 1, 2)
|
|
|
1631 #define eicasecmp_i18n_off_c(eistr, off, charoff, len, charlen, c_string) \
|
|
|
1632 eicmp_1 (eistr, off, charoff, len, charlen, c_string, 0, 1, 2)
|
|
|
1633
|
|
|
1634
|
|
|
1635 /* ----- Case-changing the Eistring ----- */
|
|
|
1636
|
|
|
1637 int eistr_casefiddle_1 (Intbyte *olddata, Bytecount len, Intbyte *newdata,
|
|
|
1638 int downp);
|
|
|
1639
|
|
|
1640 #define EI_CASECHANGE(ei, downp) \
|
|
|
1641 do { \
|
|
|
1642 int ei11new_allocmax = (ei)->charlen_ * MAX_EMCHAR_LEN + 1; \
|
|
|
1643 Intbyte *ei11storage = (Intbyte *) alloca_array (Intbyte, \
|
|
|
1644 ei11new_allocmax); \
|
|
|
1645 int ei11newlen = eistr_casefiddle_1 ((ei)->data_, (ei)->bytelen_, \
|
|
|
1646 ei11storage, downp); \
|
|
|
1647 \
|
|
|
1648 if (ei11newlen) \
|
|
|
1649 { \
|
|
|
1650 (ei)->max_size_allocated_ = ei11new_allocmax; \
|
|
|
1651 (ei)->data_ = ei11storage; \
|
|
|
1652 (ei)->bytelen_ = ei11newlen; \
|
|
|
1653 /* charlen is the same. */ \
|
|
|
1654 } \
|
|
|
1655 } while (0)
|
|
|
1656
|
|
|
1657 #define eilwr(ei) EI_CASECHANGE (ei, 1)
|
|
|
1658 #define eiupr(ei) EI_CASECHANGE (ei, 0)
|
|
|
1659
|
|
|
1660
|
|
|
1661 /************************************************************************/
|
|
|
1662 /* */
|
|
|
1663 /* Converting between internal and external format */
|
|
|
1664 /* */
|
|
|
1665 /************************************************************************/
|
|
|
1666 /*
|
|
|
1667 All client code should use only the two macros
|
|
|
1668
|
|
|
1669 TO_EXTERNAL_FORMAT (source_type, source, sink_type, sink, coding_system)
|
|
|
1670 TO_INTERNAL_FORMAT (source_type, source, sink_type, sink, coding_system)
|
|
|
1671
|
|
|
1672 Typical use is
|
|
|
1673
|
|
|
1674 TO_EXTERNAL_FORMAT (DATA, (ptr, len),
|
|
|
1675 LISP_BUFFER, buffer,
|
|
|
1676 Qfile_name);
|
|
|
1677
|
|
|
1678 NOTE: GC is inhibited during the entire operation of these macros. This
|
|
|
1679 is because frequently the data to be converted comes from strings but
|
|
|
1680 gets passed in as just DATA, and GC may move around the string data. If
|
|
|
1681 we didn't inhibit GC, there'd have to be a lot of messy recoding,
|
|
|
1682 alloca-copying of strings and other annoying stuff.
|
|
|
1683
|
|
|
1684 The source or sink can be specified in one of these ways:
|
|
|
1685
|
|
|
1686 DATA, (ptr, len), // input data is a fixed buffer of size len
|
|
|
1687 ALLOCA, (ptr, len), // output data is in a alloca()ed buffer of size len
|
|
|
1688 MALLOC, (ptr, len), // output data is in a malloc()ed buffer of size len
|
|
|
1689 C_STRING_ALLOCA, ptr, // equivalent to ALLOCA (ptr, len_ignored) on output
|
|
|
1690 C_STRING_MALLOC, ptr, // equivalent to MALLOC (ptr, len_ignored) on output
|
|
|
1691 C_STRING, ptr, // equivalent to DATA, (ptr, strlen/wcslen (ptr))
|
|
|
1692 // on input (the Unicode version is used when correct)
|
|
|
1693 LISP_STRING, string, // input or output is a Lisp_Object of type string
|
|
|
1694 LISP_BUFFER, buffer, // output is written to (point) in lisp buffer
|
|
|
1695 LISP_LSTREAM, lstream, // input or output is a Lisp_Object of type lstream
|
|
|
1696 LISP_OPAQUE, object, // input or output is a Lisp_Object of type opaque
|
|
|
1697
|
|
|
1698 When specifying the sink, use lvalues, since the macro will assign to them,
|
|
|
1699 except when the sink is an lstream or a lisp buffer.
|
|
|
1700
|
|
|
1701 The macros accept the kinds of sources and sinks appropriate for
|
|
|
1702 internal and external data representation. See the type_checking_assert
|
|
|
1703 macros below for the actual allowed types.
|
|
|
1704
|
|
|
1705 Since some sources and sinks use one argument (a Lisp_Object) to
|
|
|
1706 specify them, while others take a (pointer, length) pair, we use
|
|
|
1707 some C preprocessor trickery to allow pair arguments to be specified
|
|
|
1708 by parenthesizing them, as in the examples above.
|
|
|
1709
|
|
|
1710 Anything prefixed by dfc_ (`data format conversion') is private.
|
|
|
1711 They are only used to implement these macros.
|
|
|
1712
|
|
|
1713 [[Using C_STRING* is appropriate for using with external APIs that
|
|
|
1714 take null-terminated strings. For internal data, we should try to
|
|
|
1715 be '\0'-clean - i.e. allow arbitrary data to contain embedded '\0'.
|
|
|
1716
|
|
|
1717 Sometime in the future we might allow output to C_STRING_ALLOCA or
|
|
|
1718 C_STRING_MALLOC _only_ with TO_EXTERNAL_FORMAT(), not
|
|
|
1719 TO_INTERNAL_FORMAT().]]
|
|
|
1720
|
|
|
1721 The above comments are not true. Frequently (most of the time, in
|
|
|
1722 fact), external strings come as zero-terminated entities, where the
|
|
|
1723 zero-termination is the only way to find out the length. Even in
|
|
|
1724 cases where you can get the length, most of the time the system will
|
|
|
1725 still use the null to signal the end of the string, and there will
|
|
|
1726 still be no way to either send in or receive a string with embedded
|
|
|
1727 nulls. In such situations, it's pointless to track the length
|
|
|
1728 because null bytes can never be in the string. We have a lot of
|
|
|
1729 operations that make it easy to operate on zero-terminated strings,
|
|
|
1730 and forcing the user the deal with the length everywhere would only
|
|
|
1731 make the code uglier and more complicated, for no gain. --ben
|
|
|
1732
|
|
|
1733 There is no problem using the same lvalue for source and sink.
|
|
|
1734
|
|
|
1735 Also, when pointers are required, the code (currently at least) is
|
|
|
1736 lax and allows any pointer types, either in the source or the sink.
|
|
|
1737 This makes it possible, e.g., to deal with internal format data held
|
|
|
1738 in char *'s or external format data held in WCHAR * (i.e. Unicode).
|
|
|
1739
|
|
|
1740 Finally, whenever storage allocation is called for, extra space is
|
|
|
1741 allocated for a terminating zero, and such a zero is stored in the
|
|
|
1742 appropriate place, regardless of whether the source data was
|
|
|
1743 specified using a length or was specified as zero-terminated. This
|
|
|
1744 allows you to freely pass the resulting data, no matter how
|
|
|
1745 obtained, to a routine that expects zero termination (modulo, of
|
|
|
1746 course, that any embedded zeros in the resulting text will cause
|
|
|
1747 truncation). In fact, currently two embedded zeros are allocated
|
|
|
1748 and stored after the data result. This is to allow for the
|
|
|
1749 possibility of storing a Unicode value on output, which needs the
|
|
|
1750 two zeros. Currently, however, the two zeros are stored regardless
|
|
|
1751 of whether the conversion is internal or external and regardless of
|
|
|
1752 whether the external coding system is in fact Unicode. This
|
|
|
1753 behavior may change in the future, and you cannot rely on this --
|
|
|
1754 the most you can rely on is that sink data in Unicode format will
|
|
|
1755 have two terminating nulls, which combine to form one Unicode null
|
|
|
1756 character. */
|
|
|
1757
|
|
|
1758 #define TO_EXTERNAL_FORMAT(source_type, source, sink_type, sink, codesys) \
|
|
|
1759 do { \
|
|
|
1760 dfc_conversion_type dfc_simplified_source_type; \
|
|
|
1761 dfc_conversion_type dfc_simplified_sink_type; \
|
|
|
1762 dfc_conversion_data dfc_source; \
|
|
|
1763 dfc_conversion_data dfc_sink; \
|
|
|
1764 Lisp_Object dfc_codesys = (codesys); \
|
|
|
1765 \
|
|
|
1766 type_checking_assert \
|
|
|
1767 ((DFC_TYPE_##source_type == DFC_TYPE_DATA || \
|
|
|
1768 DFC_TYPE_##source_type == DFC_TYPE_C_STRING || \
|
|
|
1769 DFC_TYPE_##source_type == DFC_TYPE_LISP_STRING || \
|
|
|
1770 DFC_TYPE_##source_type == DFC_TYPE_LISP_OPAQUE || \
|
|
|
1771 DFC_TYPE_##source_type == DFC_TYPE_LISP_LSTREAM) \
|
|
|
1772 && \
|
|
|
1773 (DFC_TYPE_##sink_type == DFC_TYPE_ALLOCA || \
|
|
|
1774 DFC_TYPE_##sink_type == DFC_TYPE_MALLOC || \
|
|
|
1775 DFC_TYPE_##sink_type == DFC_TYPE_C_STRING_ALLOCA || \
|
|
|
1776 DFC_TYPE_##sink_type == DFC_TYPE_C_STRING_MALLOC || \
|
|
|
1777 DFC_TYPE_##sink_type == DFC_TYPE_LISP_LSTREAM || \
|
|
|
1778 DFC_TYPE_##sink_type == DFC_TYPE_LISP_OPAQUE)); \
|
|
|
1779 \
|
|
|
1780 DFC_EXT_SOURCE_##source_type##_TO_ARGS (source, dfc_codesys); \
|
|
|
1781 DFC_SINK_##sink_type##_TO_ARGS (sink); \
|
|
|
1782 \
|
|
|
1783 dfc_convert_to_external_format (dfc_simplified_source_type, &dfc_source, \
|
|
|
1784 dfc_codesys, \
|
|
|
1785 dfc_simplified_sink_type, &dfc_sink); \
|
|
|
1786 \
|
|
|
1787 DFC_##sink_type##_USE_CONVERTED_DATA (sink); \
|
|
|
1788 } while (0)
|
|
|
1789
|
|
|
1790 #define TO_INTERNAL_FORMAT(source_type, source, sink_type, sink, codesys) \
|
|
|
1791 do { \
|
|
|
1792 dfc_conversion_type dfc_simplified_source_type; \
|
|
|
1793 dfc_conversion_type dfc_simplified_sink_type; \
|
|
|
1794 dfc_conversion_data dfc_source; \
|
|
|
1795 dfc_conversion_data dfc_sink; \
|
|
|
1796 Lisp_Object dfc_codesys = (codesys); \
|
|
|
1797 \
|
|
|
1798 type_checking_assert \
|
|
|
1799 ((DFC_TYPE_##source_type == DFC_TYPE_DATA || \
|
|
|
1800 DFC_TYPE_##source_type == DFC_TYPE_C_STRING || \
|
|
|
1801 DFC_TYPE_##source_type == DFC_TYPE_LISP_OPAQUE || \
|
|
|
1802 DFC_TYPE_##source_type == DFC_TYPE_LISP_LSTREAM) \
|
|
|
1803 && \
|
|
|
1804 (DFC_TYPE_##sink_type == DFC_TYPE_ALLOCA || \
|
|
|
1805 DFC_TYPE_##sink_type == DFC_TYPE_MALLOC || \
|
|
|
1806 DFC_TYPE_##sink_type == DFC_TYPE_C_STRING_ALLOCA || \
|
|
|
1807 DFC_TYPE_##sink_type == DFC_TYPE_C_STRING_MALLOC || \
|
|
|
1808 DFC_TYPE_##sink_type == DFC_TYPE_LISP_STRING || \
|
|
|
1809 DFC_TYPE_##sink_type == DFC_TYPE_LISP_LSTREAM || \
|
|
|
1810 DFC_TYPE_##sink_type == DFC_TYPE_LISP_BUFFER)); \
|
|
|
1811 \
|
|
|
1812 DFC_INT_SOURCE_##source_type##_TO_ARGS (source, dfc_codesys); \
|
|
|
1813 DFC_SINK_##sink_type##_TO_ARGS (sink); \
|
|
|
1814 \
|
|
|
1815 dfc_convert_to_internal_format (dfc_simplified_source_type, &dfc_source, \
|
|
|
1816 dfc_codesys, \
|
|
|
1817 dfc_simplified_sink_type, &dfc_sink); \
|
|
|
1818 \
|
|
|
1819 DFC_##sink_type##_USE_CONVERTED_DATA (sink); \
|
|
|
1820 } while (0)
|
|
|
1821
|
|
|
1822
|
|
|
1823 typedef union
|
|
|
1824 {
|
|
|
1825 struct { const void *ptr; Bytecount len; } data;
|
|
|
1826 Lisp_Object lisp_object;
|
|
|
1827 } dfc_conversion_data;
|
|
|
1828
|
|
|
1829 enum dfc_conversion_type
|
|
|
1830 {
|
|
|
1831 DFC_TYPE_DATA,
|
|
|
1832 DFC_TYPE_ALLOCA,
|
|
|
1833 DFC_TYPE_MALLOC,
|
|
|
1834 DFC_TYPE_C_STRING,
|
|
|
1835 DFC_TYPE_C_STRING_ALLOCA,
|
|
|
1836 DFC_TYPE_C_STRING_MALLOC,
|
|
|
1837 DFC_TYPE_LISP_STRING,
|
|
|
1838 DFC_TYPE_LISP_LSTREAM,
|
|
|
1839 DFC_TYPE_LISP_OPAQUE,
|
|
|
1840 DFC_TYPE_LISP_BUFFER
|
|
|
1841 };
|
|
|
1842 typedef enum dfc_conversion_type dfc_conversion_type;
|
|
|
1843
|
|
|
1844 /* WARNING: These use a static buffer. This can lead to disaster if
|
|
|
1845 these functions are not used *very* carefully. Another reason to only use
|
|
|
1846 TO_EXTERNAL_FORMAT() and TO_INTERNAL_FORMAT(). */
|
|
|
1847 void
|
|
|
1848 dfc_convert_to_external_format (dfc_conversion_type source_type,
|
|
|
1849 dfc_conversion_data *source,
|
|
|
1850 Lisp_Object coding_system,
|
|
|
1851 dfc_conversion_type sink_type,
|
|
|
1852 dfc_conversion_data *sink);
|
|
|
1853 void
|
|
|
1854 dfc_convert_to_internal_format (dfc_conversion_type source_type,
|
|
|
1855 dfc_conversion_data *source,
|
|
|
1856 Lisp_Object coding_system,
|
|
|
1857 dfc_conversion_type sink_type,
|
|
|
1858 dfc_conversion_data *sink);
|
|
|
1859 /* CPP Trickery */
|
|
|
1860 #define DFC_CPP_CAR(x,y) (x)
|
|
|
1861 #define DFC_CPP_CDR(x,y) (y)
|
|
|
1862
|
|
|
1863 /* Convert `source' to args for dfc_convert_to_external_format() */
|
|
|
1864 #define DFC_EXT_SOURCE_DATA_TO_ARGS(val, codesys) do { \
|
|
|
1865 dfc_source.data.ptr = DFC_CPP_CAR val; \
|
|
|
1866 dfc_source.data.len = DFC_CPP_CDR val; \
|
|
|
1867 dfc_simplified_source_type = DFC_TYPE_DATA; \
|
|
|
1868 } while (0)
|
|
|
1869 #define DFC_EXT_SOURCE_C_STRING_TO_ARGS(val, codesys) do { \
|
|
|
1870 dfc_source.data.len = \
|
|
|
1871 strlen ((char *) (dfc_source.data.ptr = (val))); \
|
|
|
1872 dfc_simplified_source_type = DFC_TYPE_DATA; \
|
|
|
1873 } while (0)
|
|
|
1874 #define DFC_EXT_SOURCE_LISP_STRING_TO_ARGS(val, codesys) do { \
|
|
|
1875 Lisp_Object dfc_slsta = (val); \
|
|
|
1876 type_checking_assert (STRINGP (dfc_slsta)); \
|
|
|
1877 dfc_source.lisp_object = dfc_slsta; \
|
|
|
1878 dfc_simplified_source_type = DFC_TYPE_LISP_STRING; \
|
|
|
1879 } while (0)
|
|
|
1880 #define DFC_EXT_SOURCE_LISP_LSTREAM_TO_ARGS(val, codesys) do { \
|
|
|
1881 Lisp_Object dfc_sllta = (val); \
|
|
|
1882 type_checking_assert (LSTREAMP (dfc_sllta)); \
|
|
|
1883 dfc_source.lisp_object = dfc_sllta; \
|
|
|
1884 dfc_simplified_source_type = DFC_TYPE_LISP_LSTREAM; \
|
|
|
1885 } while (0)
|
|
|
1886 #define DFC_EXT_SOURCE_LISP_OPAQUE_TO_ARGS(val, codesys) do { \
|
|
|
1887 Lisp_Opaque *dfc_slota = XOPAQUE (val); \
|
|
|
1888 dfc_source.data.ptr = OPAQUE_DATA (dfc_slota); \
|
|
|
1889 dfc_source.data.len = OPAQUE_SIZE (dfc_slota); \
|
|
|
1890 dfc_simplified_source_type = DFC_TYPE_DATA; \
|
|
|
1891 } while (0)
|
|
|
1892
|
|
|
1893 /* Convert `source' to args for dfc_convert_to_internal_format() */
|
|
|
1894 #define DFC_INT_SOURCE_DATA_TO_ARGS(val, codesys) \
|
|
|
1895 DFC_EXT_SOURCE_DATA_TO_ARGS (val, codesys)
|
|
|
1896 #define DFC_INT_SOURCE_C_STRING_TO_ARGS(val, codesys) do { \
|
|
|
1897 dfc_source.data.len = dfc_external_data_len (dfc_source.data.ptr = (val), \
|
|
|
1898 codesys); \
|
|
|
1899 dfc_simplified_source_type = DFC_TYPE_DATA; \
|
|
|
1900 } while (0)
|
|
|
1901 #define DFC_INT_SOURCE_LISP_STRING_TO_ARGS(val, codesys) \
|
|
|
1902 DFC_EXT_SOURCE_LISP_STRING_TO_ARGS (val, codesys)
|
|
|
1903 #define DFC_INT_SOURCE_LISP_LSTREAM_TO_ARGS(val, codesys) \
|
|
|
1904 DFC_EXT_SOURCE_LISP_LSTREAM_TO_ARGS (val, codesys)
|
|
|
1905 #define DFC_INT_SOURCE_LISP_OPAQUE_TO_ARGS(val, codesys) \
|
|
|
1906 DFC_EXT_SOURCE_LISP_OPAQUE_TO_ARGS (val, codesys)
|
|
|
1907
|
|
|
1908 /* Convert `sink' to args for dfc_convert_to_*_format() */
|
|
|
1909 #define DFC_SINK_ALLOCA_TO_ARGS(val) \
|
|
|
1910 dfc_simplified_sink_type = DFC_TYPE_DATA
|
|
|
1911 #define DFC_SINK_C_STRING_ALLOCA_TO_ARGS(val) \
|
|
|
1912 dfc_simplified_sink_type = DFC_TYPE_DATA
|
|
|
1913 #define DFC_SINK_MALLOC_TO_ARGS(val) \
|
|
|
1914 dfc_simplified_sink_type = DFC_TYPE_DATA
|
|
|
1915 #define DFC_SINK_C_STRING_MALLOC_TO_ARGS(val) \
|
|
|
1916 dfc_simplified_sink_type = DFC_TYPE_DATA
|
|
|
1917 #define DFC_SINK_LISP_STRING_TO_ARGS(val) \
|
|
|
1918 dfc_simplified_sink_type = DFC_TYPE_DATA
|
|
|
1919 #define DFC_SINK_LISP_OPAQUE_TO_ARGS(val) \
|
|
|
1920 dfc_simplified_sink_type = DFC_TYPE_DATA
|
|
|
1921 #define DFC_SINK_LISP_LSTREAM_TO_ARGS(val) do { \
|
|
|
1922 Lisp_Object dfc_sllta = (val); \
|
|
|
1923 type_checking_assert (LSTREAMP (dfc_sllta)); \
|
|
|
1924 dfc_sink.lisp_object = dfc_sllta; \
|
|
|
1925 dfc_simplified_sink_type = DFC_TYPE_LISP_LSTREAM; \
|
|
|
1926 } while (0)
|
|
|
1927 #define DFC_SINK_LISP_BUFFER_TO_ARGS(val) do { \
|
|
|
1928 struct buffer *dfc_slbta = XBUFFER (val); \
|
|
|
1929 dfc_sink.lisp_object = \
|
|
|
1930 make_lisp_buffer_output_stream \
|
|
|
1931 (dfc_slbta, BUF_PT (dfc_slbta), 0); \
|
|
|
1932 dfc_simplified_sink_type = DFC_TYPE_LISP_LSTREAM; \
|
|
|
1933 } while (0)
|
|
|
1934
|
|
|
1935 /* Assign to the `sink' lvalue(s) using the converted data. */
|
|
|
1936 /* + 2 because we double zero-extended to account for Unicode conversion */
|
|
|
1937 typedef union { char c; void *p; } *dfc_aliasing_voidpp;
|
|
|
1938 #define DFC_ALLOCA_USE_CONVERTED_DATA(sink) do { \
|
|
|
1939 void * dfc_sink_ret = alloca (dfc_sink.data.len + 2); \
|
|
|
1940 memcpy (dfc_sink_ret, dfc_sink.data.ptr, dfc_sink.data.len + 2); \
|
|
|
1941 ((dfc_aliasing_voidpp) &(DFC_CPP_CAR sink))->p = dfc_sink_ret; \
|
|
|
1942 (DFC_CPP_CDR sink) = dfc_sink.data.len; \
|
|
|
1943 } while (0)
|
|
|
1944 #define DFC_MALLOC_USE_CONVERTED_DATA(sink) do { \
|
|
|
1945 void * dfc_sink_ret = xmalloc (dfc_sink.data.len + 2); \
|
|
|
1946 memcpy (dfc_sink_ret, dfc_sink.data.ptr, dfc_sink.data.len + 2); \
|
|
|
1947 ((dfc_aliasing_voidpp) &(DFC_CPP_CAR sink))->p = dfc_sink_ret; \
|
|
|
1948 (DFC_CPP_CDR sink) = dfc_sink.data.len; \
|
|
|
1949 } while (0)
|
|
|
1950 #define DFC_C_STRING_ALLOCA_USE_CONVERTED_DATA(sink) do { \
|
|
|
1951 void * dfc_sink_ret = alloca (dfc_sink.data.len + 2); \
|
|
|
1952 memcpy (dfc_sink_ret, dfc_sink.data.ptr, dfc_sink.data.len + 2); \
|
|
|
1953 ((dfc_aliasing_voidpp) &(sink))->p = dfc_sink_ret; \
|
|
|
1954 } while (0)
|
|
|
1955 #define DFC_C_STRING_MALLOC_USE_CONVERTED_DATA(sink) do { \
|
|
|
1956 void * dfc_sink_ret = xmalloc (dfc_sink.data.len + 2); \
|
|
|
1957 memcpy (dfc_sink_ret, dfc_sink.data.ptr, dfc_sink.data.len + 2); \
|
|
|
1958 ((dfc_aliasing_voidpp) &(sink))->p = dfc_sink_ret; \
|
|
|
1959 } while (0)
|
|
|
1960 #define DFC_LISP_STRING_USE_CONVERTED_DATA(sink) \
|
|
|
1961 sink = make_string ((Intbyte *) dfc_sink.data.ptr, dfc_sink.data.len)
|
|
|
1962 #define DFC_LISP_OPAQUE_USE_CONVERTED_DATA(sink) \
|
|
|
1963 sink = make_opaque (dfc_sink.data.ptr, dfc_sink.data.len)
|
|
|
1964 #define DFC_LISP_LSTREAM_USE_CONVERTED_DATA(sink) /* data already used */
|
|
|
1965 #define DFC_LISP_BUFFER_USE_CONVERTED_DATA(sink) \
|
|
|
1966 Lstream_delete (XLSTREAM (dfc_sink.lisp_object))
|
|
|
1967
|
|
|
1968 /* Convenience macros for extremely common invocations */
|
|
|
1969 #define C_STRING_TO_EXTERNAL(in, out, coding_system) \
|
|
|
1970 TO_EXTERNAL_FORMAT (C_STRING, in, C_STRING_ALLOCA, out, coding_system)
|
|
|
1971 #define C_STRING_TO_EXTERNAL_MALLOC(in, out, coding_system) \
|
|
|
1972 TO_EXTERNAL_FORMAT (C_STRING, in, C_STRING_MALLOC, out, coding_system)
|
|
|
1973 #define EXTERNAL_TO_C_STRING(in, out, coding_system) \
|
|
|
1974 TO_INTERNAL_FORMAT (C_STRING, in, C_STRING_ALLOCA, out, coding_system)
|
|
|
1975 #define EXTERNAL_TO_C_STRING_MALLOC(in, out, coding_system) \
|
|
|
1976 TO_INTERNAL_FORMAT (C_STRING, in, C_STRING_MALLOC, out, coding_system)
|
|
|
1977 #define LISP_STRING_TO_EXTERNAL(in, out, coding_system) \
|
|
|
1978 TO_EXTERNAL_FORMAT (LISP_STRING, in, C_STRING_ALLOCA, out, coding_system)
|
|
|
1979 #define LISP_STRING_TO_EXTERNAL_MALLOC(in, out, coding_system) \
|
|
|
1980 TO_EXTERNAL_FORMAT (LISP_STRING, in, C_STRING_MALLOC, out, coding_system)
|
|
|
1981
|
|
|
1982 /* Standins for various encodings, until we know them better */
|
|
|
1983 #define Qcommand_argument_encoding Qnative
|
|
|
1984 #define Qenvironment_variable_encoding Qnative
|
|
|
1985 #define Qunix_host_name_encoding Qnative
|
|
|
1986 #define Qunix_service_name_encoding Qnative
|
|
|
1987 #define Qmswindows_host_name_encoding Qmswindows_multibyte
|
|
|
1988 #define Qmswindows_service_name_encoding Qmswindows_multibyte
|
|
|
1989
|
|
|
1990 /* Standins for various X encodings, until we know them better */
|
|
|
1991
|
|
|
1992 /* !!#### Need to verify the encoding used in lwlib -- Qnative or Qctext?
|
|
|
1993 Almost certainly the former. Use a standin for now. */
|
|
|
1994 #define Qlwlib_encoding Qnative
|
|
|
1995
|
|
|
1996 #define Qx_atom_name_encoding Qctext
|
|
|
1997 /* font names are often stored in atoms, so it gets sticky if we set this
|
|
|
1998 to something different from atom-name encoding */
|
|
|
1999 #define Qx_font_name_encoding Qctext
|
|
|
2000
|
|
|
2001 #define Qx_color_name_encoding Qctext
|
|
|
2002
|
|
|
2003 /* the following probably must agree with Qcommand_argument_encoding and
|
|
|
2004 Qenvironment_variable_encoding */
|
|
|
2005 #define Qx_display_name_encoding Qnative
|
|
|
2006
|
|
|
2007 #define Qstrerror_encoding Qnative
|
|
|
2008
|
|
|
2009 #define GET_STRERROR(var, num) \
|
|
|
2010 do { \
|
|
|
2011 int __gsnum__ = (num); \
|
|
|
2012 Extbyte * __gserr__ = strerror (__gsnum__); \
|
|
|
2013 \
|
|
|
2014 if (!__gserr__) \
|
|
|
2015 { \
|
|
|
2016 var = alloca_intbytes (99); \
|
|
|
2017 qxesprintf (var, "Unknown error %d", __gsnum__); \
|
|
|
2018 } \
|
|
|
2019 else \
|
|
|
2020 EXTERNAL_TO_C_STRING (__gserr__, var, Qstrerror_encoding); \
|
|
|
2021 } while (0)
|
|
|
2022
|
|
|
2023 /************************************************************************/
|
|
|
2024 /* Lisp string representation convenience functions */
|
|
|
2025 /************************************************************************/
|
|
|
2026
|
|
|
2027 /* Because the representation of internally formatted data is subject
|
|
|
2028 to change, it's bad style to do something like
|
|
|
2029
|
|
|
2030 strcmp (XSTRING_DATA (s), "foo")
|
|
|
2031
|
|
|
2032 Instead, use the portable:
|
|
|
2033
|
|
|
2034 intbyte_strcmp (XSTRING_DATA (s), "foo") or
|
|
|
2035 intbyte_memcmp (XSTRING_DATA (s), "foo", 3)
|
|
|
2036
|
|
|
2037 */
|
|
|
2038
|
|
|
2039 /* Like strcmp, except first arg points at internally formatted data,
|
|
|
2040 while the second points at a string of only ASCII chars. */
|
|
|
2041 DECLARE_INLINE_HEADER (
|
|
|
2042 int
|
|
|
2043 intbyte_strcmp (const Intbyte *bp, const char *ascii_string)
|
|
|
2044 )
|
|
|
2045 {
|
|
|
2046 #ifdef MULE
|
|
|
2047 while (1)
|
|
|
2048 {
|
|
|
2049 int diff;
|
|
|
2050 type_checking_assert (BYTE_ASCII_P (*ascii_string));
|
|
|
2051 if ((diff = charptr_emchar (bp) - *(Intbyte *) ascii_string) != 0)
|
|
|
2052 return diff;
|
|
|
2053 if (*ascii_string == '\0')
|
|
|
2054 return 0;
|
|
|
2055 ascii_string++;
|
|
|
2056 INC_CHARPTR (bp);
|
|
|
2057 }
|
|
|
2058 #else
|
|
|
2059 return strcmp ((char *)bp, ascii_string);
|
|
|
2060 #endif
|
|
|
2061 }
|
|
|
2062
|
|
|
2063 /* Like memcmp, except first arg points at internally formatted data,
|
|
|
2064 while the second points at a string of only ASCII chars. */
|
|
|
2065
|
|
|
2066 DECLARE_INLINE_HEADER (
|
|
|
2067 int
|
|
|
2068 intbyte_memcmp (const Intbyte *bp, const char *ascii_string, Bytecount len)
|
|
|
2069 )
|
|
|
2070 {
|
|
|
2071 #ifdef MULE
|
|
|
2072 while (len--)
|
|
|
2073 {
|
|
|
2074 int diff = charptr_emchar (bp) - *(Intbyte *) ascii_string;
|
|
|
2075 type_checking_assert (BYTE_ASCII_P (*ascii_string));
|
|
|
2076 if (diff != 0)
|
|
|
2077 return diff;
|
|
|
2078 ascii_string++;
|
|
|
2079 INC_CHARPTR (bp);
|
|
|
2080 }
|
|
|
2081 return 0;
|
|
|
2082 #else
|
|
|
2083 return memcmp (bp, ascii_string, len);
|
|
|
2084 #endif
|
|
|
2085 }
|
|
|
2086
|
|
|
2087 #endif /* INCLUDED_text_h_ */
|
