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428
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1 /* String search routines for XEmacs.
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2 Copyright (C) 1985, 1986, 1987, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: FSF 19.29, except for region-cache stuff. */
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23
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24 /* Hacked on for Mule by Ben Wing, December 1994 and August 1995. */
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25
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26 /* This file has been Mule-ized except for the TRT stuff. */
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27
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28 #include <config.h>
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29 #include "lisp.h"
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30
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31 #include "buffer.h"
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32 #include "insdel.h"
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33 #include "opaque.h"
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34 #ifdef REGION_CACHE_NEEDS_WORK
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35 #include "region-cache.h"
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36 #endif
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37 #include "syntax.h"
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38
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39 #include <sys/types.h>
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40 #include "regex.h"
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41
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42
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43 #define REGEXP_CACHE_SIZE 20
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44
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45 /* If the regexp is non-nil, then the buffer contains the compiled form
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46 of that regexp, suitable for searching. */
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47 struct regexp_cache {
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48 struct regexp_cache *next;
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49 Lisp_Object regexp;
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50 struct re_pattern_buffer buf;
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51 char fastmap[0400];
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52 /* Nonzero means regexp was compiled to do full POSIX backtracking. */
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53 char posix;
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54 };
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55
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56 /* The instances of that struct. */
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57 static struct regexp_cache searchbufs[REGEXP_CACHE_SIZE];
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58
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59 /* The head of the linked list; points to the most recently used buffer. */
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60 static struct regexp_cache *searchbuf_head;
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61
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62
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63 /* Every call to re_match, etc., must pass &search_regs as the regs
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64 argument unless you can show it is unnecessary (i.e., if re_match
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65 is certainly going to be called again before region-around-match
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66 can be called).
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67
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68 Since the registers are now dynamically allocated, we need to make
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69 sure not to refer to the Nth register before checking that it has
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70 been allocated by checking search_regs.num_regs.
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71
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72 The regex code keeps track of whether it has allocated the search
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73 buffer using bits in the re_pattern_buffer. This means that whenever
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74 you compile a new pattern, it completely forgets whether it has
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75 allocated any registers, and will allocate new registers the next
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76 time you call a searching or matching function. Therefore, we need
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77 to call re_set_registers after compiling a new pattern or after
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78 setting the match registers, so that the regex functions will be
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79 able to free or re-allocate it properly. */
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80
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81 /* Note: things get trickier under Mule because the values returned from
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82 the regexp routines are in Bytinds but we need them to be in Bufpos's.
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83 We take the easy way out for the moment and just convert them immediately.
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84 We could be more clever by not converting them until necessary, but
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85 that gets real ugly real fast since the buffer might have changed and
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86 the positions might be out of sync or out of range.
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87 */
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88 static struct re_registers search_regs;
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89
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90 /* The buffer in which the last search was performed, or
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91 Qt if the last search was done in a string;
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92 Qnil if no searching has been done yet. */
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93 static Lisp_Object last_thing_searched;
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94
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95 /* error condition signalled when regexp compile_pattern fails */
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96
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97 Lisp_Object Qinvalid_regexp;
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98
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99 /* Regular expressions used in forward/backward-word */
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100 Lisp_Object Vforward_word_regexp, Vbackward_word_regexp;
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101
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102 /* range table for use with skip_chars. Only needed for Mule. */
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103 Lisp_Object Vskip_chars_range_table;
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104
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105 static void set_search_regs (struct buffer *buf, Bufpos beg, Charcount len);
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106 static void save_search_regs (void);
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107 static Bufpos search_buffer (struct buffer *buf, Lisp_Object str,
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108 Bufpos bufpos, Bufpos buflim, EMACS_INT n, int RE,
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109 unsigned char *trt, unsigned char *inverse_trt,
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110 int posix);
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111
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112 static void
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113 matcher_overflow (void)
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114 {
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115 error ("Stack overflow in regexp matcher");
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116 }
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117
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118 /* Compile a regexp and signal a Lisp error if anything goes wrong.
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119 PATTERN is the pattern to compile.
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120 CP is the place to put the result.
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121 TRANSLATE is a translation table for ignoring case, or NULL for none.
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122 REGP is the structure that says where to store the "register"
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123 values that will result from matching this pattern.
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124 If it is 0, we should compile the pattern not to record any
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125 subexpression bounds.
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126 POSIX is nonzero if we want full backtracking (POSIX style)
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127 for this pattern. 0 means backtrack only enough to get a valid match. */
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128
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129 static int
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130 compile_pattern_1 (struct regexp_cache *cp, Lisp_Object pattern,
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131 char *translate, struct re_registers *regp, int posix,
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132 Error_behavior errb)
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133 {
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134 CONST char *val;
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135 reg_syntax_t old;
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136
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137 cp->regexp = Qnil;
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138 cp->buf.translate = translate;
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139 cp->posix = posix;
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140 old = re_set_syntax (RE_SYNTAX_EMACS
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141 | (posix ? 0 : RE_NO_POSIX_BACKTRACKING));
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142 val = (CONST char *)
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143 re_compile_pattern ((char *) XSTRING_DATA (pattern),
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144 XSTRING_LENGTH (pattern), &cp->buf);
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145 re_set_syntax (old);
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146 if (val)
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147 {
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148 maybe_signal_error (Qinvalid_regexp, list1 (build_string (val)),
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149 Qsearch, errb);
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150 return 0;
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151 }
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152
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153 cp->regexp = Fcopy_sequence (pattern);
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154 return 1;
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155 }
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156
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157 /* Compile a regexp if necessary, but first check to see if there's one in
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158 the cache.
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159 PATTERN is the pattern to compile.
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160 TRANSLATE is a translation table for ignoring case, or NULL for none.
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161 REGP is the structure that says where to store the "register"
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162 values that will result from matching this pattern.
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163 If it is 0, we should compile the pattern not to record any
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164 subexpression bounds.
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165 POSIX is nonzero if we want full backtracking (POSIX style)
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166 for this pattern. 0 means backtrack only enough to get a valid match. */
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167
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168 struct re_pattern_buffer *
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169 compile_pattern (Lisp_Object pattern, struct re_registers *regp,
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170 char *translate, int posix, Error_behavior errb)
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171 {
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172 struct regexp_cache *cp, **cpp;
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173
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174 for (cpp = &searchbuf_head; ; cpp = &cp->next)
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175 {
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176 cp = *cpp;
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177 if (!NILP (Fstring_equal (cp->regexp, pattern))
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178 && cp->buf.translate == translate
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179 && cp->posix == posix)
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180 break;
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181
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182 /* If we're at the end of the cache, compile into the last cell. */
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183 if (cp->next == 0)
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184 {
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185 if (!compile_pattern_1 (cp, pattern, translate, regp, posix,
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186 errb))
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187 return 0;
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188 break;
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189 }
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190 }
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191
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192 /* When we get here, cp (aka *cpp) contains the compiled pattern,
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193 either because we found it in the cache or because we just compiled it.
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194 Move it to the front of the queue to mark it as most recently used. */
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195 *cpp = cp->next;
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196 cp->next = searchbuf_head;
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197 searchbuf_head = cp;
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198
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199 /* Advise the searching functions about the space we have allocated
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200 for register data. */
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201 if (regp)
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202 re_set_registers (&cp->buf, regp, regp->num_regs, regp->start, regp->end);
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203
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204 return &cp->buf;
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205 }
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206
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207 /* Error condition used for failing searches */
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208 Lisp_Object Qsearch_failed;
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209
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210 static Lisp_Object
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211 signal_failure (Lisp_Object arg)
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212 {
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213 Fsignal (Qsearch_failed, list1 (arg));
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214 return Qnil;
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215 }
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216
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217 /* Convert the search registers from Bytinds to Bufpos's. Needs to be
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218 done after each regexp match that uses the search regs.
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219
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220 We could get a potential speedup by not converting the search registers
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221 until it's really necessary, e.g. when match-data or replace-match is
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222 called. However, this complexifies the code a lot (e.g. the buffer
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223 could have changed and the Bytinds stored might be invalid) and is
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224 probably not a great time-saver. */
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225
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226 static void
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227 fixup_search_regs_for_buffer (struct buffer *buf)
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228 {
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229 int i;
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230 int num_regs = search_regs.num_regs;
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231
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232 for (i = 0; i < num_regs; i++)
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233 {
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234 if (search_regs.start[i] >= 0)
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235 search_regs.start[i] = bytind_to_bufpos (buf, search_regs.start[i]);
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236 if (search_regs.end[i] >= 0)
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237 search_regs.end[i] = bytind_to_bufpos (buf, search_regs.end[i]);
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238 }
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239 }
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240
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241 /* Similar but for strings. */
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242 static void
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243 fixup_search_regs_for_string (Lisp_Object string)
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244 {
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245 int i;
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246 int num_regs = search_regs.num_regs;
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247
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248 /* #### bytecount_to_charcount() is not that efficient. This function
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249 could be faster if it did its own conversion (using INC_CHARPTR()
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250 and such), because the register ends are likely to be somewhat ordered.
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251 (Even if not, you could sort them.)
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252
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253 Think about this if this function is a time hog, which it's probably
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254 not. */
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255 for (i = 0; i < num_regs; i++)
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256 {
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257 if (search_regs.start[i] > 0)
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258 {
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259 search_regs.start[i] =
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260 bytecount_to_charcount (XSTRING_DATA (string),
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261 search_regs.start[i]);
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262 }
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263 if (search_regs.end[i] > 0)
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264 {
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265 search_regs.end[i] =
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266 bytecount_to_charcount (XSTRING_DATA (string),
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267 search_regs.end[i]);
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268 }
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269 }
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270 }
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271
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272
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273 static Lisp_Object
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274 looking_at_1 (Lisp_Object string, struct buffer *buf, int posix)
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275 {
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276 /* This function has been Mule-ized, except for the trt table handling. */
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277 Lisp_Object val;
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278 Bytind p1, p2;
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279 Bytecount s1, s2;
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280 REGISTER int i;
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281 struct re_pattern_buffer *bufp;
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282
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283 if (running_asynch_code)
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284 save_search_regs ();
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285
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286 CHECK_STRING (string);
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287 bufp = compile_pattern (string, &search_regs,
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288 (!NILP (buf->case_fold_search)
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289 ? (char *) MIRROR_DOWNCASE_TABLE_AS_STRING (buf)
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290 : 0),
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291 posix, ERROR_ME);
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292
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293 QUIT;
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294
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295 /* Get pointers and sizes of the two strings
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296 that make up the visible portion of the buffer. */
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297
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298 p1 = BI_BUF_BEGV (buf);
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299 p2 = BI_BUF_CEILING_OF (buf, p1);
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300 s1 = p2 - p1;
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301 s2 = BI_BUF_ZV (buf) - p2;
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302
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303 regex_emacs_buffer = buf;
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304 i = re_match_2 (bufp, (char *) BI_BUF_BYTE_ADDRESS (buf, p1),
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305 s1, (char *) BI_BUF_BYTE_ADDRESS (buf, p2), s2,
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306 BI_BUF_PT (buf) - BI_BUF_BEGV (buf), &search_regs,
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307 BI_BUF_ZV (buf) - BI_BUF_BEGV (buf));
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308
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309 if (i == -2)
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310 matcher_overflow ();
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311
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312 val = (0 <= i ? Qt : Qnil);
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313 if (NILP (val))
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314 return Qnil;
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315 {
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316 int num_regs = search_regs.num_regs;
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317 for (i = 0; i < num_regs; i++)
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318 if (search_regs.start[i] >= 0)
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319 {
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320 search_regs.start[i] += BI_BUF_BEGV (buf);
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321 search_regs.end[i] += BI_BUF_BEGV (buf);
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322 }
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323 }
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324 XSETBUFFER (last_thing_searched, buf);
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325 fixup_search_regs_for_buffer (buf);
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326 return val;
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327 }
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328
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329 DEFUN ("looking-at", Flooking_at, 1, 2, 0, /*
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330 Return t if text after point matches regular expression REGEXP.
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331 This function modifies the match data that `match-beginning',
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332 `match-end' and `match-data' access; save and restore the match
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333 data if you want to preserve them.
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334
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335 Optional argument BUFFER defaults to the current buffer.
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336 */
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337 (regexp, buffer))
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338 {
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339 return looking_at_1 (regexp, decode_buffer (buffer, 0), 0);
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340 }
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341
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342 DEFUN ("posix-looking-at", Fposix_looking_at, 1, 2, 0, /*
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343 Return t if text after point matches regular expression REGEXP.
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344 Find the longest match, in accord with Posix regular expression rules.
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345 This function modifies the match data that `match-beginning',
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346 `match-end' and `match-data' access; save and restore the match
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347 data if you want to preserve them.
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348
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349 Optional argument BUFFER defaults to the current buffer.
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350 */
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351 (regexp, buffer))
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352 {
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353 return looking_at_1 (regexp, decode_buffer (buffer, 0), 1);
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354 }
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355
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356 static Lisp_Object
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357 string_match_1 (Lisp_Object regexp, Lisp_Object string, Lisp_Object start,
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358 struct buffer *buf, int posix)
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359 {
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360 /* This function has been Mule-ized, except for the trt table handling. */
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361 Bytecount val;
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362 Charcount s;
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363 struct re_pattern_buffer *bufp;
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364
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365 if (running_asynch_code)
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366 save_search_regs ();
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367
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368 CHECK_STRING (regexp);
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369 CHECK_STRING (string);
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370
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371 if (NILP (start))
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372 s = 0;
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373 else
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374 {
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375 Charcount len = XSTRING_CHAR_LENGTH (string);
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376
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377 CHECK_INT (start);
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378 s = XINT (start);
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379 if (s < 0 && -s <= len)
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380 s = len + s;
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381 else if (0 > s || s > len)
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382 args_out_of_range (string, start);
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383 }
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384
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385
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386 bufp = compile_pattern (regexp, &search_regs,
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387 (!NILP (buf->case_fold_search)
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388 ? (char *) MIRROR_DOWNCASE_TABLE_AS_STRING (buf)
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389 : 0), 0, ERROR_ME);
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390 QUIT;
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391 {
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392 Bytecount bis = charcount_to_bytecount (XSTRING_DATA (string), s);
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393 regex_emacs_buffer = buf;
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394 val = re_search (bufp, (char *) XSTRING_DATA (string),
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395 XSTRING_LENGTH (string), bis,
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396 XSTRING_LENGTH (string) - bis,
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397 &search_regs);
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398 }
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399 if (val == -2)
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400 matcher_overflow ();
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|
401 if (val < 0) return Qnil;
|
|
|
402 last_thing_searched = Qt;
|
|
|
403 fixup_search_regs_for_string (string);
|
|
|
404 return make_int (bytecount_to_charcount (XSTRING_DATA (string), val));
|
|
|
405 }
|
|
|
406
|
|
|
407 DEFUN ("string-match", Fstring_match, 2, 4, 0, /*
|
|
|
408 Return index of start of first match for REGEXP in STRING, or nil.
|
|
|
409 If third arg START is non-nil, start search at that index in STRING.
|
|
|
410 For index of first char beyond the match, do (match-end 0).
|
|
|
411 `match-end' and `match-beginning' also give indices of substrings
|
|
|
412 matched by parenthesis constructs in the pattern.
|
|
|
413
|
|
|
414 Optional arg BUFFER controls how case folding is done (according to
|
|
|
415 the value of `case-fold-search' in that buffer and that buffer's case
|
|
|
416 tables) and defaults to the current buffer.
|
|
|
417 */
|
|
|
418 (regexp, string, start, buffer))
|
|
|
419 {
|
|
|
420 return string_match_1 (regexp, string, start, decode_buffer (buffer, 0), 0);
|
|
|
421 }
|
|
|
422
|
|
|
423 DEFUN ("posix-string-match", Fposix_string_match, 2, 4, 0, /*
|
|
|
424 Return index of start of first match for REGEXP in STRING, or nil.
|
|
|
425 Find the longest match, in accord with Posix regular expression rules.
|
|
|
426 If third arg START is non-nil, start search at that index in STRING.
|
|
|
427 For index of first char beyond the match, do (match-end 0).
|
|
|
428 `match-end' and `match-beginning' also give indices of substrings
|
|
|
429 matched by parenthesis constructs in the pattern.
|
|
|
430
|
|
|
431 Optional arg BUFFER controls how case folding is done (according to
|
|
|
432 the value of `case-fold-search' in that buffer and that buffer's case
|
|
|
433 tables) and defaults to the current buffer.
|
|
|
434 */
|
|
|
435 (regexp, string, start, buffer))
|
|
|
436 {
|
|
|
437 return string_match_1 (regexp, string, start, decode_buffer (buffer, 0), 1);
|
|
|
438 }
|
|
|
439
|
|
|
440 /* Match REGEXP against STRING, searching all of STRING,
|
|
|
441 and return the index of the match, or negative on failure.
|
|
|
442 This does not clobber the match data. */
|
|
|
443
|
|
|
444 Bytecount
|
|
|
445 fast_string_match (Lisp_Object regexp, CONST Bufbyte *nonreloc,
|
|
|
446 Lisp_Object reloc, Bytecount offset,
|
|
|
447 Bytecount length, int case_fold_search,
|
|
|
448 Error_behavior errb, int no_quit)
|
|
|
449 {
|
|
|
450 /* This function has been Mule-ized, except for the trt table handling. */
|
|
|
451 Bytecount val;
|
|
|
452 Bufbyte *newnonreloc = (Bufbyte *) nonreloc;
|
|
|
453 struct re_pattern_buffer *bufp;
|
|
|
454
|
|
|
455 bufp = compile_pattern (regexp, 0,
|
|
|
456 (case_fold_search
|
|
|
457 ? (char *)
|
|
|
458 /* #### evil current-buffer dependency */
|
|
|
459 MIRROR_DOWNCASE_TABLE_AS_STRING (current_buffer)
|
|
|
460 : 0),
|
|
|
461 0, errb);
|
|
|
462 if (!bufp)
|
|
|
463 return -1; /* will only do this when errb != ERROR_ME */
|
|
|
464 if (!no_quit)
|
|
|
465 QUIT;
|
|
|
466 else
|
|
|
467 no_quit_in_re_search = 1;
|
|
|
468
|
|
|
469 fixup_internal_substring (nonreloc, reloc, offset, &length);
|
|
|
470
|
|
|
471 if (!NILP (reloc))
|
|
|
472 {
|
|
|
473 if (no_quit)
|
|
|
474 newnonreloc = XSTRING_DATA (reloc);
|
|
|
475 else
|
|
|
476 {
|
|
|
477 /* QUIT could relocate RELOC. Therefore we must alloca()
|
|
|
478 and copy. No way around this except some serious
|
|
|
479 rewriting of re_search(). */
|
|
|
480 newnonreloc = (Bufbyte *) alloca (length);
|
|
|
481 memcpy (newnonreloc, XSTRING_DATA (reloc), length);
|
|
|
482 }
|
|
|
483 }
|
|
|
484
|
|
|
485 /* #### evil current-buffer dependency */
|
|
|
486 regex_emacs_buffer = current_buffer;
|
|
|
487 val = re_search (bufp, (char *) newnonreloc + offset, length, 0,
|
|
|
488 length, 0);
|
|
|
489
|
|
|
490 no_quit_in_re_search = 0;
|
|
|
491 return val;
|
|
|
492 }
|
|
|
493
|
|
|
494 Bytecount
|
|
|
495 fast_lisp_string_match (Lisp_Object regex, Lisp_Object string)
|
|
|
496 {
|
|
|
497 return fast_string_match (regex, 0, string, 0, -1, 0, ERROR_ME, 0);
|
|
|
498 }
|
|
|
499
|
|
|
500
|
|
|
501 #ifdef REGION_CACHE_NEEDS_WORK
|
|
|
502 /* The newline cache: remembering which sections of text have no newlines. */
|
|
|
503
|
|
|
504 /* If the user has requested newline caching, make sure it's on.
|
|
|
505 Otherwise, make sure it's off.
|
|
|
506 This is our cheezy way of associating an action with the change of
|
|
|
507 state of a buffer-local variable. */
|
|
|
508 static void
|
|
|
509 newline_cache_on_off (struct buffer *buf)
|
|
|
510 {
|
|
|
511 if (NILP (buf->cache_long_line_scans))
|
|
|
512 {
|
|
|
513 /* It should be off. */
|
|
|
514 if (buf->newline_cache)
|
|
|
515 {
|
|
|
516 free_region_cache (buf->newline_cache);
|
|
|
517 buf->newline_cache = 0;
|
|
|
518 }
|
|
|
519 }
|
|
|
520 else
|
|
|
521 {
|
|
|
522 /* It should be on. */
|
|
|
523 if (buf->newline_cache == 0)
|
|
|
524 buf->newline_cache = new_region_cache ();
|
|
|
525 }
|
|
|
526 }
|
|
|
527 #endif
|
|
|
528
|
|
|
529 /* Search in BUF for COUNT instances of the character TARGET between
|
|
|
530 START and END.
|
|
|
531
|
|
|
532 If COUNT is positive, search forwards; END must be >= START.
|
|
|
533 If COUNT is negative, search backwards for the -COUNTth instance;
|
|
|
534 END must be <= START.
|
|
|
535 If COUNT is zero, do anything you please; run rogue, for all I care.
|
|
|
536
|
|
|
537 If END is zero, use BEGV or ZV instead, as appropriate for the
|
|
|
538 direction indicated by COUNT.
|
|
|
539
|
|
|
540 If we find COUNT instances, set *SHORTAGE to zero, and return the
|
|
|
541 position after the COUNTth match. Note that for reverse motion
|
|
|
542 this is not the same as the usual convention for Emacs motion commands.
|
|
|
543
|
|
|
544 If we don't find COUNT instances before reaching END, set *SHORTAGE
|
|
|
545 to the number of TARGETs left unfound, and return END.
|
|
|
546
|
|
|
547 If ALLOW_QUIT is non-zero, call QUIT periodically. */
|
|
|
548
|
|
|
549 static Bytind
|
|
|
550 bi_scan_buffer (struct buffer *buf, Emchar target, Bytind st, Bytind en,
|
|
|
551 EMACS_INT count, EMACS_INT *shortage, int allow_quit)
|
|
|
552 {
|
|
|
553 /* This function has been Mule-ized. */
|
|
|
554 Bytind lim = en > 0 ? en :
|
|
|
555 ((count > 0) ? BI_BUF_ZV (buf) : BI_BUF_BEGV (buf));
|
|
|
556
|
|
|
557 /* #### newline cache stuff in this function not yet ported */
|
|
|
558
|
|
|
559 assert (count != 0);
|
|
|
560
|
|
|
561 if (shortage)
|
|
|
562 *shortage = 0;
|
|
|
563
|
|
|
564 if (count > 0)
|
|
|
565 {
|
|
|
566 #ifdef MULE
|
|
|
567 /* Due to the Mule representation of characters in a buffer,
|
|
|
568 we can simply search for characters in the range 0 - 127
|
|
|
569 directly. For other characters, we do it the "hard" way.
|
|
|
570 Note that this way works for all characters but the other
|
|
|
571 way is faster. */
|
|
|
572 if (target >= 0200)
|
|
|
573 {
|
|
|
574 while (st < lim && count > 0)
|
|
|
575 {
|
|
|
576 if (BI_BUF_FETCH_CHAR (buf, st) == target)
|
|
|
577 count--;
|
|
|
578 INC_BYTIND (buf, st);
|
|
|
579 }
|
|
|
580 }
|
|
|
581 else
|
|
|
582 #endif
|
|
|
583 {
|
|
|
584 while (st < lim && count > 0)
|
|
|
585 {
|
|
|
586 Bytind ceil;
|
|
|
587 Bufbyte *bufptr;
|
|
|
588
|
|
|
589 ceil = BI_BUF_CEILING_OF (buf, st);
|
|
|
590 ceil = min (lim, ceil);
|
|
|
591 bufptr = (Bufbyte *) memchr (BI_BUF_BYTE_ADDRESS (buf, st),
|
|
|
592 (int) target, ceil - st);
|
|
|
593 if (bufptr)
|
|
|
594 {
|
|
|
595 count--;
|
|
|
596 st = BI_BUF_PTR_BYTE_POS (buf, bufptr) + 1;
|
|
|
597 }
|
|
|
598 else
|
|
|
599 st = ceil;
|
|
|
600 }
|
|
|
601 }
|
|
|
602
|
|
|
603 if (shortage)
|
|
|
604 *shortage = count;
|
|
|
605 if (allow_quit)
|
|
|
606 QUIT;
|
|
|
607 return st;
|
|
|
608 }
|
|
|
609 else
|
|
|
610 {
|
|
|
611 #ifdef MULE
|
|
|
612 if (target >= 0200)
|
|
|
613 {
|
|
|
614 while (st > lim && count < 0)
|
|
|
615 {
|
|
|
616 DEC_BYTIND (buf, st);
|
|
|
617 if (BI_BUF_FETCH_CHAR (buf, st) == target)
|
|
|
618 count++;
|
|
|
619 }
|
|
|
620 }
|
|
|
621 else
|
|
|
622 #endif
|
|
|
623 {
|
|
|
624 while (st > lim && count < 0)
|
|
|
625 {
|
|
|
626 Bytind floor;
|
|
|
627 Bufbyte *bufptr;
|
|
|
628 Bufbyte *floorptr;
|
|
|
629
|
|
|
630 floor = BI_BUF_FLOOR_OF (buf, st);
|
|
|
631 floor = max (lim, floor);
|
|
|
632 /* No memrchr() ... */
|
|
|
633 bufptr = BI_BUF_BYTE_ADDRESS_BEFORE (buf, st);
|
|
|
634 floorptr = BI_BUF_BYTE_ADDRESS (buf, floor);
|
|
|
635 while (bufptr >= floorptr)
|
|
|
636 {
|
|
|
637 st--;
|
|
|
638 /* At this point, both ST and BUFPTR refer to the same
|
|
|
639 character. When the loop terminates, ST will
|
|
|
640 always point to the last character we tried. */
|
|
|
641 if (* (unsigned char *) bufptr == (unsigned char) target)
|
|
|
642 {
|
|
|
643 count++;
|
|
|
644 break;
|
|
|
645 }
|
|
|
646 bufptr--;
|
|
|
647 }
|
|
|
648 }
|
|
|
649 }
|
|
|
650
|
|
|
651 if (shortage)
|
|
|
652 *shortage = -count;
|
|
|
653 if (allow_quit)
|
|
|
654 QUIT;
|
|
|
655 if (count)
|
|
|
656 return st;
|
|
|
657 else
|
|
|
658 {
|
|
|
659 /* We found the character we were looking for; we have to return
|
|
|
660 the position *after* it due to the strange way that the return
|
|
|
661 value is defined. */
|
|
|
662 INC_BYTIND (buf, st);
|
|
|
663 return st;
|
|
|
664 }
|
|
|
665 }
|
|
|
666 }
|
|
|
667
|
|
|
668 Bufpos
|
|
|
669 scan_buffer (struct buffer *buf, Emchar target, Bufpos start, Bufpos end,
|
|
|
670 EMACS_INT count, EMACS_INT *shortage, int allow_quit)
|
|
|
671 {
|
|
|
672 Bytind bi_retval;
|
|
|
673 Bytind bi_start, bi_end;
|
|
|
674
|
|
|
675 bi_start = bufpos_to_bytind (buf, start);
|
|
|
676 if (end)
|
|
|
677 bi_end = bufpos_to_bytind (buf, end);
|
|
|
678 else
|
|
|
679 bi_end = 0;
|
|
|
680 bi_retval = bi_scan_buffer (buf, target, bi_start, bi_end, count,
|
|
|
681 shortage, allow_quit);
|
|
|
682 return bytind_to_bufpos (buf, bi_retval);
|
|
|
683 }
|
|
|
684
|
|
|
685 Bytind
|
|
|
686 bi_find_next_newline_no_quit (struct buffer *buf, Bytind from, int count)
|
|
|
687 {
|
|
|
688 return bi_scan_buffer (buf, '\n', from, 0, count, 0, 0);
|
|
|
689 }
|
|
|
690
|
|
|
691 Bufpos
|
|
|
692 find_next_newline_no_quit (struct buffer *buf, Bufpos from, int count)
|
|
|
693 {
|
|
|
694 return scan_buffer (buf, '\n', from, 0, count, 0, 0);
|
|
|
695 }
|
|
|
696
|
|
|
697 Bufpos
|
|
|
698 find_next_newline (struct buffer *buf, Bufpos from, int count)
|
|
|
699 {
|
|
|
700 return scan_buffer (buf, '\n', from, 0, count, 0, 1);
|
|
|
701 }
|
|
|
702
|
|
|
703 Bytind
|
|
440
|
704 bi_find_next_emchar_in_string (Lisp_String* str, Emchar target, Bytind st,
|
|
428
|
705 EMACS_INT count)
|
|
|
706 {
|
|
|
707 /* This function has been Mule-ized. */
|
|
|
708 Bytind lim = string_length (str) -1;
|
|
|
709 Bufbyte* s = string_data (str);
|
|
|
710
|
|
|
711 assert (count >= 0);
|
|
|
712
|
|
|
713 #ifdef MULE
|
|
|
714 /* Due to the Mule representation of characters in a buffer,
|
|
|
715 we can simply search for characters in the range 0 - 127
|
|
|
716 directly. For other characters, we do it the "hard" way.
|
|
|
717 Note that this way works for all characters but the other
|
|
|
718 way is faster. */
|
|
|
719 if (target >= 0200)
|
|
|
720 {
|
|
|
721 while (st < lim && count > 0)
|
|
|
722 {
|
|
|
723 if (string_char (str, st) == target)
|
|
|
724 count--;
|
|
|
725 INC_CHARBYTIND (s, st);
|
|
|
726 }
|
|
|
727 }
|
|
|
728 else
|
|
|
729 #endif
|
|
|
730 {
|
|
|
731 while (st < lim && count > 0)
|
|
|
732 {
|
|
|
733 Bufbyte *bufptr = (Bufbyte *) memchr (charptr_n_addr (s, st),
|
|
|
734 (int) target, lim - st);
|
|
|
735 if (bufptr)
|
|
|
736 {
|
|
|
737 count--;
|
|
|
738 st = (Bytind)(bufptr - s) + 1;
|
|
|
739 }
|
|
|
740 else
|
|
|
741 st = lim;
|
|
|
742 }
|
|
|
743 }
|
|
|
744 return st;
|
|
|
745 }
|
|
|
746
|
|
|
747 /* Like find_next_newline, but returns position before the newline,
|
|
|
748 not after, and only search up to TO. This isn't just
|
|
|
749 find_next_newline (...)-1, because you might hit TO. */
|
|
|
750 Bufpos
|
|
|
751 find_before_next_newline (struct buffer *buf, Bufpos from, Bufpos to, int count)
|
|
|
752 {
|
|
|
753 EMACS_INT shortage;
|
|
|
754 Bufpos pos = scan_buffer (buf, '\n', from, to, count, &shortage, 1);
|
|
|
755
|
|
|
756 if (shortage == 0)
|
|
|
757 pos--;
|
|
|
758
|
|
|
759 return pos;
|
|
|
760 }
|
|
|
761
|
|
|
762 static Lisp_Object
|
|
|
763 skip_chars (struct buffer *buf, int forwardp, int syntaxp,
|
|
|
764 Lisp_Object string, Lisp_Object lim)
|
|
|
765 {
|
|
|
766 /* This function has been Mule-ized. */
|
|
|
767 REGISTER Bufbyte *p, *pend;
|
|
|
768 REGISTER Emchar c;
|
|
|
769 /* We store the first 256 chars in an array here and the rest in
|
|
|
770 a range table. */
|
|
|
771 unsigned char fastmap[0400];
|
|
|
772 int negate = 0;
|
|
|
773 REGISTER int i;
|
|
440
|
774 Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
|
|
428
|
775 Bufpos limit;
|
|
|
776
|
|
|
777 if (NILP (lim))
|
|
|
778 limit = forwardp ? BUF_ZV (buf) : BUF_BEGV (buf);
|
|
|
779 else
|
|
|
780 {
|
|
|
781 CHECK_INT_COERCE_MARKER (lim);
|
|
|
782 limit = XINT (lim);
|
|
|
783
|
|
|
784 /* In any case, don't allow scan outside bounds of buffer. */
|
|
|
785 if (limit > BUF_ZV (buf)) limit = BUF_ZV (buf);
|
|
|
786 if (limit < BUF_BEGV (buf)) limit = BUF_BEGV (buf);
|
|
|
787 }
|
|
|
788
|
|
|
789 CHECK_STRING (string);
|
|
|
790 p = XSTRING_DATA (string);
|
|
|
791 pend = p + XSTRING_LENGTH (string);
|
|
|
792 memset (fastmap, 0, sizeof (fastmap));
|
|
|
793
|
|
|
794 Fclear_range_table (Vskip_chars_range_table);
|
|
|
795
|
|
|
796 if (p != pend && *p == '^')
|
|
|
797 {
|
|
|
798 negate = 1;
|
|
|
799 p++;
|
|
|
800 }
|
|
|
801
|
|
|
802 /* Find the characters specified and set their elements of fastmap.
|
|
|
803 If syntaxp, each character counts as itself.
|
|
|
804 Otherwise, handle backslashes and ranges specially */
|
|
|
805
|
|
|
806 while (p != pend)
|
|
|
807 {
|
|
|
808 c = charptr_emchar (p);
|
|
|
809 INC_CHARPTR (p);
|
|
|
810 if (syntaxp)
|
|
|
811 {
|
|
|
812 if (c < 0400 && syntax_spec_code[c] < (unsigned char) Smax)
|
|
|
813 fastmap[c] = 1;
|
|
|
814 else
|
|
|
815 signal_simple_error ("Invalid syntax designator",
|
|
|
816 make_char (c));
|
|
|
817 }
|
|
|
818 else
|
|
|
819 {
|
|
|
820 if (c == '\\')
|
|
|
821 {
|
|
|
822 if (p == pend) break;
|
|
|
823 c = charptr_emchar (p);
|
|
|
824 INC_CHARPTR (p);
|
|
|
825 }
|
|
|
826 if (p != pend && *p == '-')
|
|
|
827 {
|
|
|
828 Emchar cend;
|
|
|
829
|
|
|
830 p++;
|
|
|
831 if (p == pend) break;
|
|
|
832 cend = charptr_emchar (p);
|
|
|
833 while (c <= cend && c < 0400)
|
|
|
834 {
|
|
|
835 fastmap[c] = 1;
|
|
|
836 c++;
|
|
|
837 }
|
|
|
838 if (c <= cend)
|
|
|
839 Fput_range_table (make_int (c), make_int (cend), Qt,
|
|
|
840 Vskip_chars_range_table);
|
|
|
841 INC_CHARPTR (p);
|
|
|
842 }
|
|
|
843 else
|
|
|
844 {
|
|
|
845 if (c < 0400)
|
|
|
846 fastmap[c] = 1;
|
|
|
847 else
|
|
|
848 Fput_range_table (make_int (c), make_int (c), Qt,
|
|
|
849 Vskip_chars_range_table);
|
|
|
850 }
|
|
|
851 }
|
|
|
852 }
|
|
|
853
|
|
|
854 if (syntaxp && fastmap['-'] != 0)
|
|
|
855 fastmap[' '] = 1;
|
|
|
856
|
|
|
857 /* If ^ was the first character, complement the fastmap.
|
|
|
858 We don't complement the range table, however; we just use negate
|
|
|
859 in the comparisons below. */
|
|
|
860
|
|
|
861 if (negate)
|
|
|
862 for (i = 0; i < (int) (sizeof fastmap); i++)
|
|
|
863 fastmap[i] ^= 1;
|
|
|
864
|
|
|
865 {
|
|
|
866 Bufpos start_point = BUF_PT (buf);
|
|
|
867
|
|
|
868 if (syntaxp)
|
|
|
869 {
|
|
|
870 /* All syntax designators are normal chars so nothing strange
|
|
|
871 to worry about */
|
|
|
872 if (forwardp)
|
|
|
873 {
|
|
|
874 while (BUF_PT (buf) < limit
|
|
|
875 && fastmap[(unsigned char)
|
|
|
876 syntax_code_spec
|
|
|
877 [(int) SYNTAX (syntax_table,
|
|
|
878 BUF_FETCH_CHAR
|
|
|
879 (buf, BUF_PT (buf)))]])
|
|
|
880 BUF_SET_PT (buf, BUF_PT (buf) + 1);
|
|
|
881 }
|
|
|
882 else
|
|
|
883 {
|
|
|
884 while (BUF_PT (buf) > limit
|
|
|
885 && fastmap[(unsigned char)
|
|
|
886 syntax_code_spec
|
|
|
887 [(int) SYNTAX (syntax_table,
|
|
|
888 BUF_FETCH_CHAR
|
|
|
889 (buf, BUF_PT (buf) - 1))]])
|
|
|
890 BUF_SET_PT (buf, BUF_PT (buf) - 1);
|
|
|
891 }
|
|
|
892 }
|
|
|
893 else
|
|
|
894 {
|
|
|
895 if (forwardp)
|
|
|
896 {
|
|
|
897 while (BUF_PT (buf) < limit)
|
|
|
898 {
|
|
|
899 Emchar ch = BUF_FETCH_CHAR (buf, BUF_PT (buf));
|
|
|
900 if ((ch < 0400) ? fastmap[ch] :
|
|
|
901 (NILP (Fget_range_table (make_int (ch),
|
|
|
902 Vskip_chars_range_table,
|
|
|
903 Qnil))
|
|
|
904 == negate))
|
|
|
905 BUF_SET_PT (buf, BUF_PT (buf) + 1);
|
|
|
906 else
|
|
|
907 break;
|
|
|
908 }
|
|
|
909 }
|
|
|
910 else
|
|
|
911 {
|
|
|
912 while (BUF_PT (buf) > limit)
|
|
|
913 {
|
|
|
914 Emchar ch = BUF_FETCH_CHAR (buf, BUF_PT (buf) - 1);
|
|
|
915 if ((ch < 0400) ? fastmap[ch] :
|
|
|
916 (NILP (Fget_range_table (make_int (ch),
|
|
|
917 Vskip_chars_range_table,
|
|
|
918 Qnil))
|
|
|
919 == negate))
|
|
|
920 BUF_SET_PT (buf, BUF_PT (buf) - 1);
|
|
|
921 else
|
|
|
922 break;
|
|
|
923 }
|
|
|
924 }
|
|
|
925 }
|
|
|
926 QUIT;
|
|
|
927 return make_int (BUF_PT (buf) - start_point);
|
|
|
928 }
|
|
|
929 }
|
|
|
930
|
|
|
931 DEFUN ("skip-chars-forward", Fskip_chars_forward, 1, 3, 0, /*
|
|
|
932 Move point forward, stopping before a char not in STRING, or at pos LIM.
|
|
|
933 STRING is like the inside of a `[...]' in a regular expression
|
|
|
934 except that `]' is never special and `\\' quotes `^', `-' or `\\'.
|
|
|
935 Thus, with arg "a-zA-Z", this skips letters stopping before first nonletter.
|
|
|
936 With arg "^a-zA-Z", skips nonletters stopping before first letter.
|
|
|
937 Returns the distance traveled, either zero or positive.
|
|
|
938
|
|
|
939 Optional argument BUFFER defaults to the current buffer.
|
|
|
940 */
|
|
|
941 (string, lim, buffer))
|
|
|
942 {
|
|
|
943 return skip_chars (decode_buffer (buffer, 0), 1, 0, string, lim);
|
|
|
944 }
|
|
|
945
|
|
|
946 DEFUN ("skip-chars-backward", Fskip_chars_backward, 1, 3, 0, /*
|
|
|
947 Move point backward, stopping after a char not in STRING, or at pos LIM.
|
|
|
948 See `skip-chars-forward' for details.
|
|
|
949 Returns the distance traveled, either zero or negative.
|
|
|
950
|
|
|
951 Optional argument BUFFER defaults to the current buffer.
|
|
|
952 */
|
|
|
953 (string, lim, buffer))
|
|
|
954 {
|
|
|
955 return skip_chars (decode_buffer (buffer, 0), 0, 0, string, lim);
|
|
|
956 }
|
|
|
957
|
|
|
958
|
|
|
959 DEFUN ("skip-syntax-forward", Fskip_syntax_forward, 1, 3, 0, /*
|
|
|
960 Move point forward across chars in specified syntax classes.
|
|
|
961 SYNTAX is a string of syntax code characters.
|
|
|
962 Stop before a char whose syntax is not in SYNTAX, or at position LIM.
|
|
|
963 If SYNTAX starts with ^, skip characters whose syntax is NOT in SYNTAX.
|
|
|
964 This function returns the distance traveled, either zero or positive.
|
|
|
965
|
|
|
966 Optional argument BUFFER defaults to the current buffer.
|
|
|
967 */
|
|
|
968 (syntax, lim, buffer))
|
|
|
969 {
|
|
|
970 return skip_chars (decode_buffer (buffer, 0), 1, 1, syntax, lim);
|
|
|
971 }
|
|
|
972
|
|
|
973 DEFUN ("skip-syntax-backward", Fskip_syntax_backward, 1, 3, 0, /*
|
|
|
974 Move point backward across chars in specified syntax classes.
|
|
|
975 SYNTAX is a string of syntax code characters.
|
|
|
976 Stop on reaching a char whose syntax is not in SYNTAX, or at position LIM.
|
|
|
977 If SYNTAX starts with ^, skip characters whose syntax is NOT in SYNTAX.
|
|
|
978 This function returns the distance traveled, either zero or negative.
|
|
|
979
|
|
|
980 Optional argument BUFFER defaults to the current buffer.
|
|
|
981 */
|
|
|
982 (syntax, lim, buffer))
|
|
|
983 {
|
|
|
984 return skip_chars (decode_buffer (buffer, 0), 0, 1, syntax, lim);
|
|
|
985 }
|
|
|
986
|
|
|
987
|
|
|
988 /* Subroutines of Lisp buffer search functions. */
|
|
|
989
|
|
|
990 static Lisp_Object
|
|
|
991 search_command (Lisp_Object string, Lisp_Object bound, Lisp_Object no_error,
|
|
|
992 Lisp_Object count, Lisp_Object buffer, int direction,
|
|
|
993 int RE, int posix)
|
|
|
994 {
|
|
|
995 /* This function has been Mule-ized, except for the trt table handling. */
|
|
|
996 REGISTER Bufpos np;
|
|
|
997 Bufpos lim;
|
|
|
998 EMACS_INT n = direction;
|
|
|
999 struct buffer *buf;
|
|
|
1000
|
|
|
1001 if (!NILP (count))
|
|
|
1002 {
|
|
|
1003 CHECK_INT (count);
|
|
|
1004 n *= XINT (count);
|
|
|
1005 }
|
|
|
1006
|
|
|
1007 buf = decode_buffer (buffer, 0);
|
|
|
1008 CHECK_STRING (string);
|
|
|
1009 if (NILP (bound))
|
|
|
1010 lim = n > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
|
|
|
1011 else
|
|
|
1012 {
|
|
|
1013 CHECK_INT_COERCE_MARKER (bound);
|
|
|
1014 lim = XINT (bound);
|
|
|
1015 if (n > 0 ? lim < BUF_PT (buf) : lim > BUF_PT (buf))
|
|
|
1016 error ("Invalid search bound (wrong side of point)");
|
|
|
1017 if (lim > BUF_ZV (buf))
|
|
|
1018 lim = BUF_ZV (buf);
|
|
|
1019 if (lim < BUF_BEGV (buf))
|
|
|
1020 lim = BUF_BEGV (buf);
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 np = search_buffer (buf, string, BUF_PT (buf), lim, n, RE,
|
|
|
1024 (!NILP (buf->case_fold_search)
|
|
|
1025 ? MIRROR_CANON_TABLE_AS_STRING (buf)
|
|
|
1026 : 0),
|
|
|
1027 (!NILP (buf->case_fold_search)
|
|
|
1028 ? MIRROR_EQV_TABLE_AS_STRING (buf)
|
|
|
1029 : 0), posix);
|
|
|
1030
|
|
|
1031 if (np <= 0)
|
|
|
1032 {
|
|
|
1033 if (NILP (no_error))
|
|
|
1034 return signal_failure (string);
|
|
|
1035 if (!EQ (no_error, Qt))
|
|
|
1036 {
|
|
|
1037 if (lim < BUF_BEGV (buf) || lim > BUF_ZV (buf))
|
|
|
1038 abort ();
|
|
|
1039 BUF_SET_PT (buf, lim);
|
|
|
1040 return Qnil;
|
|
|
1041 #if 0 /* This would be clean, but maybe programs depend on
|
|
|
1042 a value of nil here. */
|
|
|
1043 np = lim;
|
|
|
1044 #endif
|
|
|
1045 }
|
|
|
1046 else
|
|
|
1047 return Qnil;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050 if (np < BUF_BEGV (buf) || np > BUF_ZV (buf))
|
|
|
1051 abort ();
|
|
|
1052
|
|
|
1053 BUF_SET_PT (buf, np);
|
|
|
1054
|
|
|
1055 return make_int (np);
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 static int
|
|
|
1059 trivial_regexp_p (Lisp_Object regexp)
|
|
|
1060 {
|
|
|
1061 /* This function has been Mule-ized. */
|
|
|
1062 Bytecount len = XSTRING_LENGTH (regexp);
|
|
|
1063 Bufbyte *s = XSTRING_DATA (regexp);
|
|
|
1064 while (--len >= 0)
|
|
|
1065 {
|
|
|
1066 switch (*s++)
|
|
|
1067 {
|
|
|
1068 case '.': case '*': case '+': case '?': case '[': case '^': case '$':
|
|
|
1069 return 0;
|
|
|
1070 case '\\':
|
|
|
1071 if (--len < 0)
|
|
|
1072 return 0;
|
|
|
1073 switch (*s++)
|
|
|
1074 {
|
|
|
1075 case '|': case '(': case ')': case '`': case '\'': case 'b':
|
|
|
1076 case 'B': case '<': case '>': case 'w': case 'W': case 's':
|
|
|
1077 case 'S': case '=':
|
|
|
1078 #ifdef MULE
|
|
|
1079 /* 97/2/25 jhod Added for category matches */
|
|
|
1080 case 'c': case 'C':
|
|
|
1081 #endif /* MULE */
|
|
|
1082 case '1': case '2': case '3': case '4': case '5':
|
|
|
1083 case '6': case '7': case '8': case '9':
|
|
|
1084 return 0;
|
|
|
1085 }
|
|
|
1086 }
|
|
|
1087 }
|
|
|
1088 return 1;
|
|
|
1089 }
|
|
|
1090
|
|
|
1091 /* Search for the n'th occurrence of STRING in BUF,
|
|
|
1092 starting at position BUFPOS and stopping at position BUFLIM,
|
|
|
1093 treating PAT as a literal string if RE is false or as
|
|
|
1094 a regular expression if RE is true.
|
|
|
1095
|
|
|
1096 If N is positive, searching is forward and BUFLIM must be greater
|
|
|
1097 than BUFPOS.
|
|
|
1098 If N is negative, searching is backward and BUFLIM must be less
|
|
|
1099 than BUFPOS.
|
|
|
1100
|
|
|
1101 Returns -x if only N-x occurrences found (x > 0),
|
|
|
1102 or else the position at the beginning of the Nth occurrence
|
|
|
1103 (if searching backward) or the end (if searching forward).
|
|
|
1104
|
|
|
1105 POSIX is nonzero if we want full backtracking (POSIX style)
|
|
|
1106 for this pattern. 0 means backtrack only enough to get a valid match. */
|
|
|
1107
|
|
|
1108 static Bufpos
|
|
|
1109 search_buffer (struct buffer *buf, Lisp_Object string, Bufpos bufpos,
|
|
|
1110 Bufpos buflim, EMACS_INT n, int RE, unsigned char *trt,
|
|
|
1111 unsigned char *inverse_trt, int posix)
|
|
|
1112 {
|
|
|
1113 /* This function has been Mule-ized, except for the trt table handling. */
|
|
|
1114 Bytecount len = XSTRING_LENGTH (string);
|
|
|
1115 Bufbyte *base_pat = XSTRING_DATA (string);
|
|
|
1116 REGISTER EMACS_INT *BM_tab;
|
|
|
1117 EMACS_INT *BM_tab_base;
|
|
|
1118 REGISTER int direction = ((n > 0) ? 1 : -1);
|
|
|
1119 REGISTER Bytecount dirlen;
|
|
|
1120 EMACS_INT infinity;
|
|
|
1121 Bytind limit;
|
|
|
1122 EMACS_INT k;
|
|
|
1123 Bytecount stride_for_teases = 0;
|
|
|
1124 REGISTER Bufbyte *pat = 0;
|
|
|
1125 REGISTER Bufbyte *cursor, *p_limit, *ptr2;
|
|
|
1126 REGISTER EMACS_INT i, j;
|
|
|
1127 Bytind p1, p2;
|
|
|
1128 Bytecount s1, s2;
|
|
|
1129 Bytind pos, lim;
|
|
|
1130
|
|
|
1131 if (running_asynch_code)
|
|
|
1132 save_search_regs ();
|
|
|
1133
|
|
|
1134 /* Null string is found at starting position. */
|
|
|
1135 if (len == 0)
|
|
|
1136 {
|
|
|
1137 set_search_regs (buf, bufpos, 0);
|
|
|
1138 return bufpos;
|
|
|
1139 }
|
|
|
1140
|
|
|
1141 /* Searching 0 times means don't move. */
|
|
|
1142 if (n == 0)
|
|
|
1143 return bufpos;
|
|
|
1144
|
|
|
1145 pos = bufpos_to_bytind (buf, bufpos);
|
|
|
1146 lim = bufpos_to_bytind (buf, buflim);
|
|
|
1147 if (RE && !trivial_regexp_p (string))
|
|
|
1148 {
|
|
|
1149 struct re_pattern_buffer *bufp;
|
|
|
1150
|
|
|
1151 bufp = compile_pattern (string, &search_regs, (char *) trt, posix,
|
|
|
1152 ERROR_ME);
|
|
|
1153
|
|
|
1154 /* Get pointers and sizes of the two strings
|
|
|
1155 that make up the visible portion of the buffer. */
|
|
|
1156
|
|
|
1157 p1 = BI_BUF_BEGV (buf);
|
|
|
1158 p2 = BI_BUF_CEILING_OF (buf, p1);
|
|
|
1159 s1 = p2 - p1;
|
|
|
1160 s2 = BI_BUF_ZV (buf) - p2;
|
|
|
1161
|
|
|
1162 while (n < 0)
|
|
|
1163 {
|
|
|
1164 Bytecount val;
|
|
|
1165 QUIT;
|
|
|
1166 regex_emacs_buffer = buf;
|
|
|
1167 val = re_search_2 (bufp,
|
|
|
1168 (char *) BI_BUF_BYTE_ADDRESS (buf, p1), s1,
|
|
|
1169 (char *) BI_BUF_BYTE_ADDRESS (buf, p2), s2,
|
|
|
1170 pos - BI_BUF_BEGV (buf), lim - pos, &search_regs,
|
|
|
1171 pos - BI_BUF_BEGV (buf));
|
|
|
1172
|
|
|
1173 if (val == -2)
|
|
|
1174 {
|
|
|
1175 matcher_overflow ();
|
|
|
1176 }
|
|
|
1177 if (val >= 0)
|
|
|
1178 {
|
|
|
1179 int num_regs = search_regs.num_regs;
|
|
|
1180 j = BI_BUF_BEGV (buf);
|
|
|
1181 for (i = 0; i < num_regs; i++)
|
|
|
1182 if (search_regs.start[i] >= 0)
|
|
|
1183 {
|
|
|
1184 search_regs.start[i] += j;
|
|
|
1185 search_regs.end[i] += j;
|
|
|
1186 }
|
|
|
1187 XSETBUFFER (last_thing_searched, buf);
|
|
|
1188 /* Set pos to the new position. */
|
|
|
1189 pos = search_regs.start[0];
|
|
|
1190 fixup_search_regs_for_buffer (buf);
|
|
|
1191 /* And bufpos too. */
|
|
|
1192 bufpos = search_regs.start[0];
|
|
|
1193 }
|
|
|
1194 else
|
|
|
1195 {
|
|
|
1196 return n;
|
|
|
1197 }
|
|
|
1198 n++;
|
|
|
1199 }
|
|
|
1200 while (n > 0)
|
|
|
1201 {
|
|
|
1202 Bytecount val;
|
|
|
1203 QUIT;
|
|
|
1204 regex_emacs_buffer = buf;
|
|
|
1205 val = re_search_2 (bufp,
|
|
|
1206 (char *) BI_BUF_BYTE_ADDRESS (buf, p1), s1,
|
|
|
1207 (char *) BI_BUF_BYTE_ADDRESS (buf, p2), s2,
|
|
|
1208 pos - BI_BUF_BEGV (buf), lim - pos, &search_regs,
|
|
|
1209 lim - BI_BUF_BEGV (buf));
|
|
|
1210 if (val == -2)
|
|
|
1211 {
|
|
|
1212 matcher_overflow ();
|
|
|
1213 }
|
|
|
1214 if (val >= 0)
|
|
|
1215 {
|
|
|
1216 int num_regs = search_regs.num_regs;
|
|
|
1217 j = BI_BUF_BEGV (buf);
|
|
|
1218 for (i = 0; i < num_regs; i++)
|
|
|
1219 if (search_regs.start[i] >= 0)
|
|
|
1220 {
|
|
|
1221 search_regs.start[i] += j;
|
|
|
1222 search_regs.end[i] += j;
|
|
|
1223 }
|
|
|
1224 XSETBUFFER (last_thing_searched, buf);
|
|
|
1225 /* Set pos to the new position. */
|
|
|
1226 pos = search_regs.end[0];
|
|
|
1227 fixup_search_regs_for_buffer (buf);
|
|
|
1228 /* And bufpos too. */
|
|
|
1229 bufpos = search_regs.end[0];
|
|
|
1230 }
|
|
|
1231 else
|
|
|
1232 {
|
|
|
1233 return 0 - n;
|
|
|
1234 }
|
|
|
1235 n--;
|
|
|
1236 }
|
|
|
1237 return bufpos;
|
|
|
1238 }
|
|
|
1239 else /* non-RE case */
|
|
|
1240 /* #### Someone really really really needs to comment the workings
|
|
|
1241 of this junk somewhat better.
|
|
|
1242
|
|
|
1243 BTW "BM" stands for Boyer-Moore, which is one of the standard
|
|
|
1244 string-searching algorithms. It's the best string-searching
|
|
|
1245 algorithm out there provided
|
|
|
1246
|
|
|
1247 a) You're not fazed by algorithm complexity. (Rabin-Karp, which
|
|
|
1248 uses hashing, is much much easier to code but not as fast.)
|
|
|
1249 b) You can freely move backwards in the string that you're
|
|
|
1250 searching through.
|
|
|
1251
|
|
|
1252 As the comment below tries to explain (but garbles in typical
|
|
|
1253 programmer-ese), the idea is that you don't have to do a
|
|
|
1254 string match at every successive position in the text. For
|
|
|
1255 example, let's say the pattern is "a very long string". We
|
|
|
1256 compare the last character in the string (`g') with the
|
|
|
1257 corresponding character in the text. If it mismatches, and
|
|
|
1258 it is, say, `z', then we can skip forward by the entire
|
|
|
1259 length of the pattern because `z' does not occur anywhere
|
|
|
1260 in the pattern. If the mismatching character does occur
|
|
|
1261 in the pattern, we can usually still skip forward by more
|
|
|
1262 than one: e.g. if it is `l', then we can skip forward
|
|
|
1263 by the length of the substring "ong string" -- i.e. the
|
|
|
1264 largest end section of the pattern that does not contain
|
|
|
1265 the mismatched character. So what we do is compute, for
|
|
|
1266 each possible character, the distance we can skip forward
|
|
|
1267 (the "stride") and use it in the string matching. This
|
|
|
1268 is what the BM_tab holds. */
|
|
|
1269 {
|
|
|
1270 #ifdef C_ALLOCA
|
|
|
1271 EMACS_INT BM_tab_space[0400];
|
|
|
1272 BM_tab = &BM_tab_space[0];
|
|
|
1273 #else
|
|
|
1274 BM_tab = alloca_array (EMACS_INT, 256);
|
|
|
1275 #endif
|
|
|
1276 {
|
|
|
1277 Bufbyte *patbuf = alloca_array (Bufbyte, len);
|
|
|
1278 pat = patbuf;
|
|
|
1279 while (--len >= 0)
|
|
|
1280 {
|
|
|
1281 /* If we got here and the RE flag is set, it's because we're
|
|
|
1282 dealing with a regexp known to be trivial, so the backslash
|
|
|
1283 just quotes the next character. */
|
|
|
1284 if (RE && *base_pat == '\\')
|
|
|
1285 {
|
|
|
1286 len--;
|
|
|
1287 base_pat++;
|
|
|
1288 }
|
|
|
1289 *pat++ = (trt ? trt[*base_pat++] : *base_pat++);
|
|
|
1290 }
|
|
|
1291 len = pat - patbuf;
|
|
|
1292 pat = base_pat = patbuf;
|
|
|
1293 }
|
|
|
1294 /* The general approach is that we are going to maintain that we know */
|
|
|
1295 /* the first (closest to the present position, in whatever direction */
|
|
|
1296 /* we're searching) character that could possibly be the last */
|
|
|
1297 /* (furthest from present position) character of a valid match. We */
|
|
|
1298 /* advance the state of our knowledge by looking at that character */
|
|
|
1299 /* and seeing whether it indeed matches the last character of the */
|
|
|
1300 /* pattern. If it does, we take a closer look. If it does not, we */
|
|
|
1301 /* move our pointer (to putative last characters) as far as is */
|
|
|
1302 /* logically possible. This amount of movement, which I call a */
|
|
|
1303 /* stride, will be the length of the pattern if the actual character */
|
|
|
1304 /* appears nowhere in the pattern, otherwise it will be the distance */
|
|
|
1305 /* from the last occurrence of that character to the end of the */
|
|
|
1306 /* pattern. */
|
|
|
1307 /* As a coding trick, an enormous stride is coded into the table for */
|
|
|
1308 /* characters that match the last character. This allows use of only */
|
|
|
1309 /* a single test, a test for having gone past the end of the */
|
|
|
1310 /* permissible match region, to test for both possible matches (when */
|
|
|
1311 /* the stride goes past the end immediately) and failure to */
|
|
|
1312 /* match (where you get nudged past the end one stride at a time). */
|
|
|
1313
|
|
|
1314 /* Here we make a "mickey mouse" BM table. The stride of the search */
|
|
|
1315 /* is determined only by the last character of the putative match. */
|
|
|
1316 /* If that character does not match, we will stride the proper */
|
|
|
1317 /* distance to propose a match that superimposes it on the last */
|
|
|
1318 /* instance of a character that matches it (per trt), or misses */
|
|
|
1319 /* it entirely if there is none. */
|
|
|
1320
|
|
|
1321 dirlen = len * direction;
|
|
|
1322 infinity = dirlen - (lim + pos + len + len) * direction;
|
|
|
1323 if (direction < 0)
|
|
|
1324 pat = (base_pat += len - 1);
|
|
|
1325 BM_tab_base = BM_tab;
|
|
|
1326 BM_tab += 0400;
|
|
|
1327 j = dirlen; /* to get it in a register */
|
|
|
1328 /* A character that does not appear in the pattern induces a */
|
|
|
1329 /* stride equal to the pattern length. */
|
|
|
1330 while (BM_tab_base != BM_tab)
|
|
|
1331 {
|
|
|
1332 *--BM_tab = j;
|
|
|
1333 *--BM_tab = j;
|
|
|
1334 *--BM_tab = j;
|
|
|
1335 *--BM_tab = j;
|
|
|
1336 }
|
|
|
1337 i = 0;
|
|
|
1338 while (i != infinity)
|
|
|
1339 {
|
|
|
1340 j = pat[i]; i += direction;
|
|
|
1341 if (i == dirlen) i = infinity;
|
|
|
1342 if (trt != 0)
|
|
|
1343 {
|
|
|
1344 k = (j = trt[j]);
|
|
|
1345 if (i == infinity)
|
|
|
1346 stride_for_teases = BM_tab[j];
|
|
|
1347 BM_tab[j] = dirlen - i;
|
|
|
1348 /* A translation table is accompanied by its inverse -- see */
|
|
|
1349 /* comment following downcase_table for details */
|
|
|
1350
|
|
|
1351 while ((j = inverse_trt[j]) != k)
|
|
|
1352 BM_tab[j] = dirlen - i;
|
|
|
1353 }
|
|
|
1354 else
|
|
|
1355 {
|
|
|
1356 if (i == infinity)
|
|
|
1357 stride_for_teases = BM_tab[j];
|
|
|
1358 BM_tab[j] = dirlen - i;
|
|
|
1359 }
|
|
|
1360 /* stride_for_teases tells how much to stride if we get a */
|
|
|
1361 /* match on the far character but are subsequently */
|
|
|
1362 /* disappointed, by recording what the stride would have been */
|
|
|
1363 /* for that character if the last character had been */
|
|
|
1364 /* different. */
|
|
|
1365 }
|
|
|
1366 infinity = dirlen - infinity;
|
|
|
1367 pos += dirlen - ((direction > 0) ? direction : 0);
|
|
|
1368 /* loop invariant - pos points at where last char (first char if reverse)
|
|
|
1369 of pattern would align in a possible match. */
|
|
|
1370 while (n != 0)
|
|
|
1371 {
|
|
|
1372 /* It's been reported that some (broken) compiler thinks that
|
|
|
1373 Boolean expressions in an arithmetic context are unsigned.
|
|
|
1374 Using an explicit ?1:0 prevents this. */
|
|
|
1375 if ((lim - pos - ((direction > 0) ? 1 : 0)) * direction < 0)
|
|
|
1376 return n * (0 - direction);
|
|
|
1377 /* First we do the part we can by pointers (maybe nothing) */
|
|
|
1378 QUIT;
|
|
|
1379 pat = base_pat;
|
|
|
1380 limit = pos - dirlen + direction;
|
|
|
1381 /* XEmacs change: definitions of CEILING_OF and FLOOR_OF
|
|
|
1382 have changed. See buffer.h. */
|
|
|
1383 limit = ((direction > 0)
|
|
|
1384 ? BI_BUF_CEILING_OF (buf, limit) - 1
|
|
|
1385 : BI_BUF_FLOOR_OF (buf, limit + 1));
|
|
|
1386 /* LIMIT is now the last (not beyond-last!) value
|
|
|
1387 POS can take on without hitting edge of buffer or the gap. */
|
|
|
1388 limit = ((direction > 0)
|
|
|
1389 ? min (lim - 1, min (limit, pos + 20000))
|
|
|
1390 : max (lim, max (limit, pos - 20000)));
|
|
|
1391 if ((limit - pos) * direction > 20)
|
|
|
1392 {
|
|
|
1393 p_limit = BI_BUF_BYTE_ADDRESS (buf, limit);
|
|
|
1394 ptr2 = (cursor = BI_BUF_BYTE_ADDRESS (buf, pos));
|
|
|
1395 /* In this loop, pos + cursor - ptr2 is the surrogate for pos */
|
|
|
1396 while (1) /* use one cursor setting as long as i can */
|
|
|
1397 {
|
|
|
1398 if (direction > 0) /* worth duplicating */
|
|
|
1399 {
|
|
|
1400 /* Use signed comparison if appropriate
|
|
|
1401 to make cursor+infinity sure to be > p_limit.
|
|
|
1402 Assuming that the buffer lies in a range of addresses
|
|
|
1403 that are all "positive" (as ints) or all "negative",
|
|
|
1404 either kind of comparison will work as long
|
|
|
1405 as we don't step by infinity. So pick the kind
|
|
|
1406 that works when we do step by infinity. */
|
|
|
1407 if ((EMACS_INT) (p_limit + infinity) >
|
|
|
1408 (EMACS_INT) p_limit)
|
|
|
1409 while ((EMACS_INT) cursor <=
|
|
|
1410 (EMACS_INT) p_limit)
|
|
|
1411 cursor += BM_tab[*cursor];
|
|
|
1412 else
|
|
|
1413 while ((EMACS_UINT) cursor <=
|
|
|
1414 (EMACS_UINT) p_limit)
|
|
|
1415 cursor += BM_tab[*cursor];
|
|
|
1416 }
|
|
|
1417 else
|
|
|
1418 {
|
|
|
1419 if ((EMACS_INT) (p_limit + infinity) <
|
|
|
1420 (EMACS_INT) p_limit)
|
|
|
1421 while ((EMACS_INT) cursor >=
|
|
|
1422 (EMACS_INT) p_limit)
|
|
|
1423 cursor += BM_tab[*cursor];
|
|
|
1424 else
|
|
|
1425 while ((EMACS_UINT) cursor >=
|
|
|
1426 (EMACS_UINT) p_limit)
|
|
|
1427 cursor += BM_tab[*cursor];
|
|
|
1428 }
|
|
|
1429 /* If you are here, cursor is beyond the end of the searched region. */
|
|
|
1430 /* This can happen if you match on the far character of the pattern, */
|
|
|
1431 /* because the "stride" of that character is infinity, a number able */
|
|
|
1432 /* to throw you well beyond the end of the search. It can also */
|
|
|
1433 /* happen if you fail to match within the permitted region and would */
|
|
|
1434 /* otherwise try a character beyond that region */
|
|
|
1435 if ((cursor - p_limit) * direction <= len)
|
|
|
1436 break; /* a small overrun is genuine */
|
|
|
1437 cursor -= infinity; /* large overrun = hit */
|
|
|
1438 i = dirlen - direction;
|
|
|
1439 if (trt != 0)
|
|
|
1440 {
|
|
|
1441 while ((i -= direction) + direction != 0)
|
|
|
1442 if (pat[i] != trt[*(cursor -= direction)])
|
|
|
1443 break;
|
|
|
1444 }
|
|
|
1445 else
|
|
|
1446 {
|
|
|
1447 while ((i -= direction) + direction != 0)
|
|
|
1448 if (pat[i] != *(cursor -= direction))
|
|
|
1449 break;
|
|
|
1450 }
|
|
|
1451 cursor += dirlen - i - direction; /* fix cursor */
|
|
|
1452 if (i + direction == 0)
|
|
|
1453 {
|
|
|
1454 cursor -= direction;
|
|
|
1455
|
|
|
1456 {
|
|
|
1457 Bytind bytstart = (pos + cursor - ptr2 +
|
|
|
1458 ((direction > 0)
|
|
|
1459 ? 1 - len : 0));
|
|
|
1460 Bufpos bufstart = bytind_to_bufpos (buf, bytstart);
|
|
|
1461 Bufpos bufend = bytind_to_bufpos (buf, bytstart + len);
|
|
|
1462
|
|
|
1463 set_search_regs (buf, bufstart, bufend - bufstart);
|
|
|
1464 }
|
|
|
1465
|
|
|
1466 if ((n -= direction) != 0)
|
|
|
1467 cursor += dirlen; /* to resume search */
|
|
|
1468 else
|
|
|
1469 return ((direction > 0)
|
|
|
1470 ? search_regs.end[0] : search_regs.start[0]);
|
|
|
1471 }
|
|
|
1472 else
|
|
|
1473 cursor += stride_for_teases; /* <sigh> we lose - */
|
|
|
1474 }
|
|
|
1475 pos += cursor - ptr2;
|
|
|
1476 }
|
|
|
1477 else
|
|
|
1478 /* Now we'll pick up a clump that has to be done the hard */
|
|
|
1479 /* way because it covers a discontinuity */
|
|
|
1480 {
|
|
|
1481 /* XEmacs change: definitions of CEILING_OF and FLOOR_OF
|
|
|
1482 have changed. See buffer.h. */
|
|
|
1483 limit = ((direction > 0)
|
|
|
1484 ? BI_BUF_CEILING_OF (buf, pos - dirlen + 1) - 1
|
|
|
1485 : BI_BUF_FLOOR_OF (buf, pos - dirlen));
|
|
|
1486 limit = ((direction > 0)
|
|
|
1487 ? min (limit + len, lim - 1)
|
|
|
1488 : max (limit - len, lim));
|
|
|
1489 /* LIMIT is now the last value POS can have
|
|
|
1490 and still be valid for a possible match. */
|
|
|
1491 while (1)
|
|
|
1492 {
|
|
|
1493 /* This loop can be coded for space rather than */
|
|
|
1494 /* speed because it will usually run only once. */
|
|
|
1495 /* (the reach is at most len + 21, and typically */
|
|
|
1496 /* does not exceed len) */
|
|
|
1497 while ((limit - pos) * direction >= 0)
|
|
|
1498 /* *not* BI_BUF_FETCH_CHAR. We are working here
|
|
|
1499 with bytes, not characters. */
|
|
|
1500 pos += BM_tab[*BI_BUF_BYTE_ADDRESS (buf, pos)];
|
|
|
1501 /* now run the same tests to distinguish going off the */
|
|
|
1502 /* end, a match or a phony match. */
|
|
|
1503 if ((pos - limit) * direction <= len)
|
|
|
1504 break; /* ran off the end */
|
|
|
1505 /* Found what might be a match.
|
|
|
1506 Set POS back to last (first if reverse) char pos. */
|
|
|
1507 pos -= infinity;
|
|
|
1508 i = dirlen - direction;
|
|
|
1509 while ((i -= direction) + direction != 0)
|
|
|
1510 {
|
|
|
1511 pos -= direction;
|
|
|
1512 if (pat[i] != (((Bufbyte *) trt)
|
|
|
1513 /* #### Does not handle TRT right */
|
|
|
1514 ? trt[*BI_BUF_BYTE_ADDRESS (buf, pos)]
|
|
|
1515 : *BI_BUF_BYTE_ADDRESS (buf, pos)))
|
|
|
1516 break;
|
|
|
1517 }
|
|
|
1518 /* Above loop has moved POS part or all the way
|
|
|
1519 back to the first char pos (last char pos if reverse).
|
|
|
1520 Set it once again at the last (first if reverse) char. */
|
|
|
1521 pos += dirlen - i- direction;
|
|
|
1522 if (i + direction == 0)
|
|
|
1523 {
|
|
|
1524 pos -= direction;
|
|
|
1525
|
|
|
1526 {
|
|
|
1527 Bytind bytstart = (pos +
|
|
|
1528 ((direction > 0)
|
|
|
1529 ? 1 - len : 0));
|
|
|
1530 Bufpos bufstart = bytind_to_bufpos (buf, bytstart);
|
|
|
1531 Bufpos bufend = bytind_to_bufpos (buf, bytstart + len);
|
|
|
1532
|
|
|
1533 set_search_regs (buf, bufstart, bufend - bufstart);
|
|
|
1534 }
|
|
|
1535
|
|
|
1536 if ((n -= direction) != 0)
|
|
|
1537 pos += dirlen; /* to resume search */
|
|
|
1538 else
|
|
|
1539 return ((direction > 0)
|
|
|
1540 ? search_regs.end[0] : search_regs.start[0]);
|
|
|
1541 }
|
|
|
1542 else
|
|
|
1543 pos += stride_for_teases;
|
|
|
1544 }
|
|
|
1545 }
|
|
|
1546 /* We have done one clump. Can we continue? */
|
|
|
1547 if ((lim - pos) * direction < 0)
|
|
|
1548 return (0 - n) * direction;
|
|
|
1549 }
|
|
|
1550 return bytind_to_bufpos (buf, pos);
|
|
|
1551 }
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 /* Record beginning BEG and end BEG + LEN
|
|
|
1555 for a match just found in the current buffer. */
|
|
|
1556
|
|
|
1557 static void
|
|
|
1558 set_search_regs (struct buffer *buf, Bufpos beg, Charcount len)
|
|
|
1559 {
|
|
|
1560 /* This function has been Mule-ized. */
|
|
|
1561 /* Make sure we have registers in which to store
|
|
|
1562 the match position. */
|
|
|
1563 if (search_regs.num_regs == 0)
|
|
|
1564 {
|
|
|
1565 search_regs.start = xnew (regoff_t);
|
|
|
1566 search_regs.end = xnew (regoff_t);
|
|
|
1567 search_regs.num_regs = 1;
|
|
|
1568 }
|
|
|
1569
|
|
|
1570 search_regs.start[0] = beg;
|
|
|
1571 search_regs.end[0] = beg + len;
|
|
|
1572 XSETBUFFER (last_thing_searched, buf);
|
|
|
1573 }
|
|
|
1574
|
|
|
1575
|
|
|
1576 /* Given a string of words separated by word delimiters,
|
|
|
1577 compute a regexp that matches those exact words
|
|
|
1578 separated by arbitrary punctuation. */
|
|
|
1579
|
|
|
1580 static Lisp_Object
|
|
|
1581 wordify (Lisp_Object buffer, Lisp_Object string)
|
|
|
1582 {
|
|
|
1583 Charcount i, len;
|
|
|
1584 EMACS_INT punct_count = 0, word_count = 0;
|
|
|
1585 struct buffer *buf = decode_buffer (buffer, 0);
|
|
440
|
1586 Lisp_Char_Table *syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
|
|
428
|
1587
|
|
|
1588 CHECK_STRING (string);
|
|
|
1589 len = XSTRING_CHAR_LENGTH (string);
|
|
|
1590
|
|
|
1591 for (i = 0; i < len; i++)
|
|
|
1592 if (!WORD_SYNTAX_P (syntax_table, string_char (XSTRING (string), i)))
|
|
|
1593 {
|
|
|
1594 punct_count++;
|
|
|
1595 if (i > 0 && WORD_SYNTAX_P (syntax_table,
|
|
|
1596 string_char (XSTRING (string), i - 1)))
|
|
|
1597 word_count++;
|
|
|
1598 }
|
|
|
1599 if (WORD_SYNTAX_P (syntax_table, string_char (XSTRING (string), len - 1)))
|
|
|
1600 word_count++;
|
|
|
1601 if (!word_count) return build_string ("");
|
|
|
1602
|
|
|
1603 {
|
|
|
1604 /* The following value is an upper bound on the amount of storage we
|
|
|
1605 need. In non-Mule, it is exact. */
|
|
|
1606 Bufbyte *storage =
|
|
|
1607 (Bufbyte *) alloca (XSTRING_LENGTH (string) - punct_count +
|
|
|
1608 5 * (word_count - 1) + 4);
|
|
|
1609 Bufbyte *o = storage;
|
|
|
1610
|
|
|
1611 *o++ = '\\';
|
|
|
1612 *o++ = 'b';
|
|
|
1613
|
|
|
1614 for (i = 0; i < len; i++)
|
|
|
1615 {
|
|
|
1616 Emchar ch = string_char (XSTRING (string), i);
|
|
|
1617
|
|
|
1618 if (WORD_SYNTAX_P (syntax_table, ch))
|
|
|
1619 o += set_charptr_emchar (o, ch);
|
|
|
1620 else if (i > 0
|
|
|
1621 && WORD_SYNTAX_P (syntax_table,
|
|
|
1622 string_char (XSTRING (string), i - 1))
|
|
|
1623 && --word_count)
|
|
|
1624 {
|
|
|
1625 *o++ = '\\';
|
|
|
1626 *o++ = 'W';
|
|
|
1627 *o++ = '\\';
|
|
|
1628 *o++ = 'W';
|
|
|
1629 *o++ = '*';
|
|
|
1630 }
|
|
|
1631 }
|
|
|
1632
|
|
|
1633 *o++ = '\\';
|
|
|
1634 *o++ = 'b';
|
|
|
1635
|
|
|
1636 return make_string (storage, o - storage);
|
|
|
1637 }
|
|
|
1638 }
|
|
|
1639
|
|
|
1640 DEFUN ("search-backward", Fsearch_backward, 1, 5, "sSearch backward: ", /*
|
|
|
1641 Search backward from point for STRING.
|
|
|
1642 Set point to the beginning of the occurrence found, and return point.
|
|
|
1643 An optional second argument bounds the search; it is a buffer position.
|
|
|
1644 The match found must not extend before that position.
|
|
|
1645 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1646 If not nil and not t, position at limit of search and return nil.
|
|
|
1647 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1648 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1649 defaults to the current buffer.
|
|
|
1650 See also the functions `match-beginning', `match-end' and `replace-match'.
|
|
|
1651 */
|
|
|
1652 (string, bound, no_error, count, buffer))
|
|
|
1653 {
|
|
|
1654 return search_command (string, bound, no_error, count, buffer, -1, 0, 0);
|
|
|
1655 }
|
|
|
1656
|
|
|
1657 DEFUN ("search-forward", Fsearch_forward, 1, 5, "sSearch: ", /*
|
|
|
1658 Search forward from point for STRING.
|
|
|
1659 Set point to the end of the occurrence found, and return point.
|
|
|
1660 An optional second argument bounds the search; it is a buffer position.
|
|
|
1661 The match found must not extend after that position. nil is equivalent
|
|
|
1662 to (point-max).
|
|
|
1663 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1664 If not nil and not t, move to limit of search and return nil.
|
|
|
1665 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1666 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1667 defaults to the current buffer.
|
|
|
1668 See also the functions `match-beginning', `match-end' and `replace-match'.
|
|
|
1669 */
|
|
|
1670 (string, bound, no_error, count, buffer))
|
|
|
1671 {
|
|
|
1672 return search_command (string, bound, no_error, count, buffer, 1, 0, 0);
|
|
|
1673 }
|
|
|
1674
|
|
|
1675 DEFUN ("word-search-backward", Fword_search_backward, 1, 5,
|
|
|
1676 "sWord search backward: ", /*
|
|
|
1677 Search backward from point for STRING, ignoring differences in punctuation.
|
|
|
1678 Set point to the beginning of the occurrence found, and return point.
|
|
|
1679 An optional second argument bounds the search; it is a buffer position.
|
|
|
1680 The match found must not extend before that position.
|
|
|
1681 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1682 If not nil and not t, move to limit of search and return nil.
|
|
|
1683 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1684 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1685 defaults to the current buffer.
|
|
|
1686 */
|
|
|
1687 (string, bound, no_error, count, buffer))
|
|
|
1688 {
|
|
|
1689 return search_command (wordify (buffer, string), bound, no_error, count,
|
|
|
1690 buffer, -1, 1, 0);
|
|
|
1691 }
|
|
|
1692
|
|
|
1693 DEFUN ("word-search-forward", Fword_search_forward, 1, 5, "sWord search: ", /*
|
|
|
1694 Search forward from point for STRING, ignoring differences in punctuation.
|
|
|
1695 Set point to the end of the occurrence found, and return point.
|
|
|
1696 An optional second argument bounds the search; it is a buffer position.
|
|
|
1697 The match found must not extend after that position.
|
|
|
1698 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1699 If not nil and not t, move to limit of search and return nil.
|
|
|
1700 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1701 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1702 defaults to the current buffer.
|
|
|
1703 */
|
|
|
1704 (string, bound, no_error, count, buffer))
|
|
|
1705 {
|
|
|
1706 return search_command (wordify (buffer, string), bound, no_error, count,
|
|
|
1707 buffer, 1, 1, 0);
|
|
|
1708 }
|
|
|
1709
|
|
|
1710 DEFUN ("re-search-backward", Fre_search_backward, 1, 5,
|
|
|
1711 "sRE search backward: ", /*
|
|
|
1712 Search backward from point for match for regular expression REGEXP.
|
|
|
1713 Set point to the beginning of the match, and return point.
|
|
|
1714 The match found is the one starting last in the buffer
|
|
|
1715 and yet ending before the origin of the search.
|
|
|
1716 An optional second argument bounds the search; it is a buffer position.
|
|
|
1717 The match found must start at or after that position.
|
|
|
1718 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1719 If not nil and not t, move to limit of search and return nil.
|
|
|
1720 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1721 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1722 defaults to the current buffer.
|
|
|
1723 See also the functions `match-beginning', `match-end' and `replace-match'.
|
|
|
1724 */
|
|
|
1725 (regexp, bound, no_error, count, buffer))
|
|
|
1726 {
|
|
|
1727 return search_command (regexp, bound, no_error, count, buffer, -1, 1, 0);
|
|
|
1728 }
|
|
|
1729
|
|
|
1730 DEFUN ("re-search-forward", Fre_search_forward, 1, 5, "sRE search: ", /*
|
|
|
1731 Search forward from point for regular expression REGEXP.
|
|
|
1732 Set point to the end of the occurrence found, and return point.
|
|
|
1733 An optional second argument bounds the search; it is a buffer position.
|
|
|
1734 The match found must not extend after that position.
|
|
|
1735 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1736 If not nil and not t, move to limit of search and return nil.
|
|
|
1737 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1738 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1739 defaults to the current buffer.
|
|
|
1740 See also the functions `match-beginning', `match-end' and `replace-match'.
|
|
|
1741 */
|
|
|
1742 (regexp, bound, no_error, count, buffer))
|
|
|
1743 {
|
|
|
1744 return search_command (regexp, bound, no_error, count, buffer, 1, 1, 0);
|
|
|
1745 }
|
|
|
1746
|
|
|
1747 DEFUN ("posix-search-backward", Fposix_search_backward, 1, 5,
|
|
|
1748 "sPosix search backward: ", /*
|
|
|
1749 Search backward from point for match for regular expression REGEXP.
|
|
|
1750 Find the longest match in accord with Posix regular expression rules.
|
|
|
1751 Set point to the beginning of the match, and return point.
|
|
|
1752 The match found is the one starting last in the buffer
|
|
|
1753 and yet ending before the origin of the search.
|
|
|
1754 An optional second argument bounds the search; it is a buffer position.
|
|
|
1755 The match found must start at or after that position.
|
|
|
1756 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1757 If not nil and not t, move to limit of search and return nil.
|
|
|
1758 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1759 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1760 defaults to the current buffer.
|
|
|
1761 See also the functions `match-beginning', `match-end' and `replace-match'.
|
|
|
1762 */
|
|
|
1763 (regexp, bound, no_error, count, buffer))
|
|
|
1764 {
|
|
|
1765 return search_command (regexp, bound, no_error, count, buffer, -1, 1, 1);
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 DEFUN ("posix-search-forward", Fposix_search_forward, 1, 5, "sPosix search: ", /*
|
|
|
1769 Search forward from point for regular expression REGEXP.
|
|
|
1770 Find the longest match in accord with Posix regular expression rules.
|
|
|
1771 Set point to the end of the occurrence found, and return point.
|
|
|
1772 An optional second argument bounds the search; it is a buffer position.
|
|
|
1773 The match found must not extend after that position.
|
|
|
1774 Optional third argument, if t, means if fail just return nil (no error).
|
|
|
1775 If not nil and not t, move to limit of search and return nil.
|
|
|
1776 Optional fourth argument is repeat count--search for successive occurrences.
|
|
|
1777 Optional fifth argument BUFFER specifies the buffer to search in and
|
|
|
1778 defaults to the current buffer.
|
|
|
1779 See also the functions `match-beginning', `match-end' and `replace-match'.
|
|
|
1780 */
|
|
|
1781 (regexp, bound, no_error, count, buffer))
|
|
|
1782 {
|
|
|
1783 return search_command (regexp, bound, no_error, count, buffer, 1, 1, 1);
|
|
|
1784 }
|
|
|
1785
|
|
|
1786
|
|
|
1787 static Lisp_Object
|
|
|
1788 free_created_dynarrs (Lisp_Object cons)
|
|
|
1789 {
|
|
|
1790 Dynarr_free (get_opaque_ptr (XCAR (cons)));
|
|
|
1791 Dynarr_free (get_opaque_ptr (XCDR (cons)));
|
|
|
1792 free_opaque_ptr (XCAR (cons));
|
|
|
1793 free_opaque_ptr (XCDR (cons));
|
|
|
1794 free_cons (XCONS (cons));
|
|
|
1795 return Qnil;
|
|
|
1796 }
|
|
|
1797
|
|
|
1798 DEFUN ("replace-match", Freplace_match, 1, 5, 0, /*
|
|
|
1799 Replace text matched by last search with NEWTEXT.
|
|
|
1800 If second arg FIXEDCASE is non-nil, do not alter case of replacement text.
|
|
|
1801 Otherwise maybe capitalize the whole text, or maybe just word initials,
|
|
|
1802 based on the replaced text.
|
|
|
1803 If the replaced text has only capital letters
|
|
|
1804 and has at least one multiletter word, convert NEWTEXT to all caps.
|
|
|
1805 If the replaced text has at least one word starting with a capital letter,
|
|
|
1806 then capitalize each word in NEWTEXT.
|
|
|
1807
|
|
|
1808 If third arg LITERAL is non-nil, insert NEWTEXT literally.
|
|
|
1809 Otherwise treat `\\' as special:
|
|
|
1810 `\\&' in NEWTEXT means substitute original matched text.
|
|
|
1811 `\\N' means substitute what matched the Nth `\\(...\\)'.
|
|
|
1812 If Nth parens didn't match, substitute nothing.
|
|
|
1813 `\\\\' means insert one `\\'.
|
|
|
1814 `\\u' means upcase the next character.
|
|
|
1815 `\\l' means downcase the next character.
|
|
|
1816 `\\U' means begin upcasing all following characters.
|
|
|
1817 `\\L' means begin downcasing all following characters.
|
|
|
1818 `\\E' means terminate the effect of any `\\U' or `\\L'.
|
|
|
1819 Case changes made with `\\u', `\\l', `\\U', and `\\L' override
|
|
|
1820 all other case changes that may be made in the replaced text.
|
|
|
1821 FIXEDCASE and LITERAL are optional arguments.
|
|
|
1822 Leaves point at end of replacement text.
|
|
|
1823
|
|
|
1824 The optional fourth argument STRING can be a string to modify.
|
|
|
1825 In that case, this function creates and returns a new string
|
|
|
1826 which is made by replacing the part of STRING that was matched.
|
|
|
1827 When fourth argument is a string, fifth argument STRBUFFER specifies
|
|
|
1828 the buffer to be used for syntax-table and case-table lookup and
|
|
|
1829 defaults to the current buffer. (When fourth argument is not a string,
|
|
|
1830 the buffer that the match occurred in has automatically been remembered
|
|
|
1831 and you do not need to specify it.)
|
|
|
1832 */
|
|
|
1833 (newtext, fixedcase, literal, string, strbuffer))
|
|
|
1834 {
|
|
|
1835 /* This function has been Mule-ized. */
|
|
|
1836 /* This function can GC */
|
|
|
1837 enum { nochange, all_caps, cap_initial } case_action;
|
|
|
1838 Bufpos pos, last;
|
|
|
1839 int some_multiletter_word;
|
|
|
1840 int some_lowercase;
|
|
|
1841 int some_uppercase;
|
|
|
1842 int some_nonuppercase_initial;
|
|
|
1843 Emchar c, prevc;
|
|
|
1844 Charcount inslen;
|
|
|
1845 struct buffer *buf;
|
|
440
|
1846 Lisp_Char_Table *syntax_table;
|
|
428
|
1847 int mc_count;
|
|
|
1848 Lisp_Object buffer;
|
|
|
1849 int_dynarr *ul_action_dynarr = 0;
|
|
|
1850 int_dynarr *ul_pos_dynarr = 0;
|
|
|
1851 int speccount;
|
|
|
1852
|
|
|
1853 CHECK_STRING (newtext);
|
|
|
1854
|
|
|
1855 if (! NILP (string))
|
|
|
1856 {
|
|
|
1857 CHECK_STRING (string);
|
|
|
1858 if (!EQ (last_thing_searched, Qt))
|
|
|
1859 error ("last thing matched was not a string");
|
|
|
1860 /* If the match data
|
|
|
1861 were abstracted into a special "match data" type instead
|
|
|
1862 of the typical half-assed "let the implementation be
|
|
|
1863 visible" form it's in, we could extend it to include
|
|
|
1864 the last string matched and the buffer used for that
|
|
|
1865 matching. But of course we can't change it as it is. */
|
|
|
1866 buf = decode_buffer (strbuffer, 0);
|
|
|
1867 XSETBUFFER (buffer, buf);
|
|
|
1868 }
|
|
|
1869 else
|
|
|
1870 {
|
|
|
1871 if (!BUFFERP (last_thing_searched))
|
|
|
1872 error ("last thing matched was not a buffer");
|
|
|
1873 buffer = last_thing_searched;
|
|
|
1874 buf = XBUFFER (buffer);
|
|
|
1875 }
|
|
|
1876
|
|
|
1877 syntax_table = XCHAR_TABLE (buf->mirror_syntax_table);
|
|
|
1878
|
|
|
1879 case_action = nochange; /* We tried an initialization */
|
|
|
1880 /* but some C compilers blew it */
|
|
|
1881
|
|
|
1882 if (search_regs.num_regs == 0)
|
|
|
1883 error ("replace-match called before any match found");
|
|
|
1884
|
|
|
1885 if (NILP (string))
|
|
|
1886 {
|
|
|
1887 if (search_regs.start[0] < BUF_BEGV (buf)
|
|
|
1888 || search_regs.start[0] > search_regs.end[0]
|
|
|
1889 || search_regs.end[0] > BUF_ZV (buf))
|
|
|
1890 args_out_of_range (make_int (search_regs.start[0]),
|
|
|
1891 make_int (search_regs.end[0]));
|
|
|
1892 }
|
|
|
1893 else
|
|
|
1894 {
|
|
|
1895 if (search_regs.start[0] < 0
|
|
|
1896 || search_regs.start[0] > search_regs.end[0]
|
|
|
1897 || search_regs.end[0] > XSTRING_CHAR_LENGTH (string))
|
|
|
1898 args_out_of_range (make_int (search_regs.start[0]),
|
|
|
1899 make_int (search_regs.end[0]));
|
|
|
1900 }
|
|
|
1901
|
|
|
1902 if (NILP (fixedcase))
|
|
|
1903 {
|
|
|
1904 /* Decide how to casify by examining the matched text. */
|
|
|
1905
|
|
|
1906 last = search_regs.end[0];
|
|
|
1907 prevc = '\n';
|
|
|
1908 case_action = all_caps;
|
|
|
1909
|
|
|
1910 /* some_multiletter_word is set nonzero if any original word
|
|
|
1911 is more than one letter long. */
|
|
|
1912 some_multiletter_word = 0;
|
|
|
1913 some_lowercase = 0;
|
|
|
1914 some_nonuppercase_initial = 0;
|
|
|
1915 some_uppercase = 0;
|
|
|
1916
|
|
|
1917 for (pos = search_regs.start[0]; pos < last; pos++)
|
|
|
1918 {
|
|
|
1919 if (NILP (string))
|
|
|
1920 c = BUF_FETCH_CHAR (buf, pos);
|
|
|
1921 else
|
|
|
1922 c = string_char (XSTRING (string), pos);
|
|
|
1923
|
|
|
1924 if (LOWERCASEP (buf, c))
|
|
|
1925 {
|
|
|
1926 /* Cannot be all caps if any original char is lower case */
|
|
|
1927
|
|
|
1928 some_lowercase = 1;
|
|
|
1929 if (!WORD_SYNTAX_P (syntax_table, prevc))
|
|
|
1930 some_nonuppercase_initial = 1;
|
|
|
1931 else
|
|
|
1932 some_multiletter_word = 1;
|
|
|
1933 }
|
|
|
1934 else if (!NOCASEP (buf, c))
|
|
|
1935 {
|
|
|
1936 some_uppercase = 1;
|
|
|
1937 if (!WORD_SYNTAX_P (syntax_table, prevc))
|
|
|
1938 ;
|
|
|
1939 else
|
|
|
1940 some_multiletter_word = 1;
|
|
|
1941 }
|
|
|
1942 else
|
|
|
1943 {
|
|
|
1944 /* If the initial is a caseless word constituent,
|
|
|
1945 treat that like a lowercase initial. */
|
|
|
1946 if (!WORD_SYNTAX_P (syntax_table, prevc))
|
|
|
1947 some_nonuppercase_initial = 1;
|
|
|
1948 }
|
|
|
1949
|
|
|
1950 prevc = c;
|
|
|
1951 }
|
|
|
1952
|
|
|
1953 /* Convert to all caps if the old text is all caps
|
|
|
1954 and has at least one multiletter word. */
|
|
|
1955 if (! some_lowercase && some_multiletter_word)
|
|
|
1956 case_action = all_caps;
|
|
|
1957 /* Capitalize each word, if the old text has all capitalized words. */
|
|
|
1958 else if (!some_nonuppercase_initial && some_multiletter_word)
|
|
|
1959 case_action = cap_initial;
|
|
|
1960 else if (!some_nonuppercase_initial && some_uppercase)
|
|
|
1961 /* Should x -> yz, operating on X, give Yz or YZ?
|
|
|
1962 We'll assume the latter. */
|
|
|
1963 case_action = all_caps;
|
|
|
1964 else
|
|
|
1965 case_action = nochange;
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 /* Do replacement in a string. */
|
|
|
1969 if (!NILP (string))
|
|
|
1970 {
|
|
|
1971 Lisp_Object before, after;
|
|
|
1972
|
|
|
1973 speccount = specpdl_depth ();
|
|
|
1974 before = Fsubstring (string, Qzero, make_int (search_regs.start[0]));
|
|
|
1975 after = Fsubstring (string, make_int (search_regs.end[0]), Qnil);
|
|
|
1976
|
|
|
1977 /* Do case substitution into NEWTEXT if desired. */
|
|
|
1978 if (NILP (literal))
|
|
|
1979 {
|
|
|
1980 Charcount stlen = XSTRING_CHAR_LENGTH (newtext);
|
|
|
1981 Charcount strpos;
|
|
|
1982 /* XEmacs change: rewrote this loop somewhat to make it
|
|
|
1983 cleaner. Also added \U, \E, etc. */
|
|
|
1984 Charcount literal_start = 0;
|
|
|
1985 /* We build up the substituted string in ACCUM. */
|
|
|
1986 Lisp_Object accum;
|
|
|
1987
|
|
|
1988 accum = Qnil;
|
|
|
1989
|
|
|
1990 /* OK, the basic idea here is that we scan through the
|
|
|
1991 replacement string until we find a backslash, which
|
|
|
1992 represents a substring of the original string to be
|
|
|
1993 substituted. We then append onto ACCUM the literal
|
|
|
1994 text before the backslash (LASTPOS marks the
|
|
|
1995 beginning of this) followed by the substring of the
|
|
|
1996 original string that needs to be inserted. */
|
|
|
1997 for (strpos = 0; strpos < stlen; strpos++)
|
|
|
1998 {
|
|
|
1999 /* If LITERAL_END is set, we've encountered a backslash
|
|
|
2000 (the end of literal text to be inserted). */
|
|
|
2001 Charcount literal_end = -1;
|
|
|
2002 /* If SUBSTART is set, we need to also insert the
|
|
|
2003 text from SUBSTART to SUBEND in the original string. */
|
|
|
2004 Charcount substart = -1;
|
|
|
2005 Charcount subend = -1;
|
|
|
2006
|
|
|
2007 c = string_char (XSTRING (newtext), strpos);
|
|
|
2008 if (c == '\\' && strpos < stlen - 1)
|
|
|
2009 {
|
|
|
2010 c = string_char (XSTRING (newtext), ++strpos);
|
|
|
2011 if (c == '&')
|
|
|
2012 {
|
|
|
2013 literal_end = strpos - 1;
|
|
|
2014 substart = search_regs.start[0];
|
|
|
2015 subend = search_regs.end[0];
|
|
|
2016 }
|
|
|
2017 else if (c >= '1' && c <= '9' &&
|
|
|
2018 c <= search_regs.num_regs + '0')
|
|
|
2019 {
|
|
|
2020 if (search_regs.start[c - '0'] >= 0)
|
|
|
2021 {
|
|
|
2022 literal_end = strpos - 1;
|
|
|
2023 substart = search_regs.start[c - '0'];
|
|
|
2024 subend = search_regs.end[c - '0'];
|
|
|
2025 }
|
|
|
2026 }
|
|
|
2027 else if (c == 'U' || c == 'u' || c == 'L' || c == 'l' ||
|
|
|
2028 c == 'E')
|
|
|
2029 {
|
|
|
2030 /* Keep track of all case changes requested, but don't
|
|
|
2031 make them now. Do them later so we override
|
|
|
2032 everything else. */
|
|
|
2033 if (!ul_pos_dynarr)
|
|
|
2034 {
|
|
|
2035 ul_pos_dynarr = Dynarr_new (int);
|
|
|
2036 ul_action_dynarr = Dynarr_new (int);
|
|
|
2037 record_unwind_protect
|
|
|
2038 (free_created_dynarrs,
|
|
|
2039 noseeum_cons
|
|
|
2040 (make_opaque_ptr (ul_pos_dynarr),
|
|
|
2041 make_opaque_ptr (ul_action_dynarr)));
|
|
|
2042 }
|
|
|
2043 literal_end = strpos - 1;
|
|
|
2044 Dynarr_add (ul_pos_dynarr,
|
|
|
2045 (!NILP (accum)
|
|
|
2046 ? XSTRING_CHAR_LENGTH (accum)
|
|
|
2047 : 0) + (literal_end - literal_start));
|
|
|
2048 Dynarr_add (ul_action_dynarr, c);
|
|
|
2049 }
|
|
|
2050 else if (c == '\\')
|
|
|
2051 /* So we get just one backslash. */
|
|
|
2052 literal_end = strpos;
|
|
|
2053 }
|
|
|
2054 if (literal_end >= 0)
|
|
|
2055 {
|
|
|
2056 Lisp_Object literal_text = Qnil;
|
|
|
2057 Lisp_Object substring = Qnil;
|
|
|
2058 if (literal_end != literal_start)
|
|
|
2059 literal_text = Fsubstring (newtext,
|
|
|
2060 make_int (literal_start),
|
|
|
2061 make_int (literal_end));
|
|
|
2062 if (substart >= 0 && subend != substart)
|
|
|
2063 substring = Fsubstring (string,
|
|
|
2064 make_int (substart),
|
|
|
2065 make_int (subend));
|
|
|
2066 if (!NILP (literal_text) || !NILP (substring))
|
|
|
2067 accum = concat3 (accum, literal_text, substring);
|
|
|
2068 literal_start = strpos + 1;
|
|
|
2069 }
|
|
|
2070 }
|
|
|
2071
|
|
|
2072 if (strpos != literal_start)
|
|
|
2073 /* some literal text at end to be inserted */
|
|
|
2074 newtext = concat2 (accum, Fsubstring (newtext,
|
|
|
2075 make_int (literal_start),
|
|
|
2076 make_int (strpos)));
|
|
|
2077 else
|
|
|
2078 newtext = accum;
|
|
|
2079 }
|
|
|
2080
|
|
|
2081 if (case_action == all_caps)
|
|
|
2082 newtext = Fupcase (newtext, buffer);
|
|
|
2083 else if (case_action == cap_initial)
|
|
|
2084 newtext = Fupcase_initials (newtext, buffer);
|
|
|
2085
|
|
|
2086 /* Now finally, we need to process the \U's, \E's, etc. */
|
|
|
2087 if (ul_pos_dynarr)
|
|
|
2088 {
|
|
|
2089 int i = 0;
|
|
|
2090 int cur_action = 'E';
|
|
|
2091 Charcount stlen = XSTRING_CHAR_LENGTH (newtext);
|
|
|
2092 Charcount strpos;
|
|
|
2093
|
|
|
2094 for (strpos = 0; strpos < stlen; strpos++)
|
|
|
2095 {
|
|
|
2096 Emchar curchar = string_char (XSTRING (newtext), strpos);
|
|
|
2097 Emchar newchar = -1;
|
|
|
2098 if (i < Dynarr_length (ul_pos_dynarr) &&
|
|
|
2099 strpos == Dynarr_at (ul_pos_dynarr, i))
|
|
|
2100 {
|
|
|
2101 int new_action = Dynarr_at (ul_action_dynarr, i);
|
|
|
2102 i++;
|
|
|
2103 if (new_action == 'u')
|
|
|
2104 newchar = UPCASE (buf, curchar);
|
|
|
2105 else if (new_action == 'l')
|
|
|
2106 newchar = DOWNCASE (buf, curchar);
|
|
|
2107 else
|
|
|
2108 cur_action = new_action;
|
|
|
2109 }
|
|
|
2110 if (newchar == -1)
|
|
|
2111 {
|
|
|
2112 if (cur_action == 'U')
|
|
|
2113 newchar = UPCASE (buf, curchar);
|
|
|
2114 else if (cur_action == 'L')
|
|
|
2115 newchar = DOWNCASE (buf, curchar);
|
|
|
2116 else
|
|
|
2117 newchar = curchar;
|
|
|
2118 }
|
|
|
2119 if (newchar != curchar)
|
|
|
2120 set_string_char (XSTRING (newtext), strpos, newchar);
|
|
|
2121 }
|
|
|
2122 }
|
|
|
2123
|
|
|
2124 /* frees the Dynarrs if necessary. */
|
|
|
2125 unbind_to (speccount, Qnil);
|
|
|
2126 return concat3 (before, newtext, after);
|
|
|
2127 }
|
|
|
2128
|
|
|
2129 mc_count = begin_multiple_change (buf, search_regs.start[0],
|
|
|
2130 search_regs.end[0]);
|
|
|
2131
|
|
|
2132 /* begin_multiple_change() records an unwind-protect, so we need to
|
|
|
2133 record this value now. */
|
|
|
2134 speccount = specpdl_depth ();
|
|
|
2135
|
|
|
2136 /* We insert the replacement text before the old text, and then
|
|
|
2137 delete the original text. This means that markers at the
|
|
|
2138 beginning or end of the original will float to the corresponding
|
|
|
2139 position in the replacement. */
|
|
|
2140 BUF_SET_PT (buf, search_regs.start[0]);
|
|
|
2141 if (!NILP (literal))
|
|
|
2142 Finsert (1, &newtext);
|
|
|
2143 else
|
|
|
2144 {
|
|
|
2145 Charcount stlen = XSTRING_CHAR_LENGTH (newtext);
|
|
|
2146 Charcount strpos;
|
|
|
2147 struct gcpro gcpro1;
|
|
|
2148 GCPRO1 (newtext);
|
|
|
2149 for (strpos = 0; strpos < stlen; strpos++)
|
|
|
2150 {
|
|
|
2151 Charcount offset = BUF_PT (buf) - search_regs.start[0];
|
|
|
2152
|
|
|
2153 c = string_char (XSTRING (newtext), strpos);
|
|
|
2154 if (c == '\\' && strpos < stlen - 1)
|
|
|
2155 {
|
|
|
2156 c = string_char (XSTRING (newtext), ++strpos);
|
|
|
2157 if (c == '&')
|
|
|
2158 Finsert_buffer_substring
|
|
|
2159 (buffer,
|
|
|
2160 make_int (search_regs.start[0] + offset),
|
|
|
2161 make_int (search_regs.end[0] + offset));
|
|
|
2162 else if (c >= '1' && c <= '9' &&
|
|
|
2163 c <= search_regs.num_regs + '0')
|
|
|
2164 {
|
|
|
2165 if (search_regs.start[c - '0'] >= 1)
|
|
|
2166 Finsert_buffer_substring
|
|
|
2167 (buffer,
|
|
|
2168 make_int (search_regs.start[c - '0'] + offset),
|
|
|
2169 make_int (search_regs.end[c - '0'] + offset));
|
|
|
2170 }
|
|
|
2171 else if (c == 'U' || c == 'u' || c == 'L' || c == 'l' ||
|
|
|
2172 c == 'E')
|
|
|
2173 {
|
|
|
2174 /* Keep track of all case changes requested, but don't
|
|
|
2175 make them now. Do them later so we override
|
|
|
2176 everything else. */
|
|
|
2177 if (!ul_pos_dynarr)
|
|
|
2178 {
|
|
|
2179 ul_pos_dynarr = Dynarr_new (int);
|
|
|
2180 ul_action_dynarr = Dynarr_new (int);
|
|
|
2181 record_unwind_protect
|
|
|
2182 (free_created_dynarrs,
|
|
|
2183 Fcons (make_opaque_ptr (ul_pos_dynarr),
|
|
|
2184 make_opaque_ptr (ul_action_dynarr)));
|
|
|
2185 }
|
|
|
2186 Dynarr_add (ul_pos_dynarr, BUF_PT (buf));
|
|
|
2187 Dynarr_add (ul_action_dynarr, c);
|
|
|
2188 }
|
|
|
2189 else
|
|
|
2190 buffer_insert_emacs_char (buf, c);
|
|
|
2191 }
|
|
|
2192 else
|
|
|
2193 buffer_insert_emacs_char (buf, c);
|
|
|
2194 }
|
|
|
2195 UNGCPRO;
|
|
|
2196 }
|
|
|
2197
|
|
|
2198 inslen = BUF_PT (buf) - (search_regs.start[0]);
|
|
|
2199 buffer_delete_range (buf, search_regs.start[0] + inslen, search_regs.end[0] +
|
|
|
2200 inslen, 0);
|
|
|
2201
|
|
|
2202 if (case_action == all_caps)
|
|
|
2203 Fupcase_region (make_int (BUF_PT (buf) - inslen),
|
|
|
2204 make_int (BUF_PT (buf)), buffer);
|
|
|
2205 else if (case_action == cap_initial)
|
|
|
2206 Fupcase_initials_region (make_int (BUF_PT (buf) - inslen),
|
|
|
2207 make_int (BUF_PT (buf)), buffer);
|
|
|
2208
|
|
|
2209 /* Now go through and make all the case changes that were requested
|
|
|
2210 in the replacement string. */
|
|
|
2211 if (ul_pos_dynarr)
|
|
|
2212 {
|
|
|
2213 Bufpos eend = BUF_PT (buf);
|
|
|
2214 int i = 0;
|
|
|
2215 int cur_action = 'E';
|
|
|
2216
|
|
|
2217 for (pos = BUF_PT (buf) - inslen; pos < eend; pos++)
|
|
|
2218 {
|
|
|
2219 Emchar curchar = BUF_FETCH_CHAR (buf, pos);
|
|
|
2220 Emchar newchar = -1;
|
|
|
2221 if (i < Dynarr_length (ul_pos_dynarr) &&
|
|
|
2222 pos == Dynarr_at (ul_pos_dynarr, i))
|
|
|
2223 {
|
|
|
2224 int new_action = Dynarr_at (ul_action_dynarr, i);
|
|
|
2225 i++;
|
|
|
2226 if (new_action == 'u')
|
|
|
2227 newchar = UPCASE (buf, curchar);
|
|
|
2228 else if (new_action == 'l')
|
|
|
2229 newchar = DOWNCASE (buf, curchar);
|
|
|
2230 else
|
|
|
2231 cur_action = new_action;
|
|
|
2232 }
|
|
|
2233 if (newchar == -1)
|
|
|
2234 {
|
|
|
2235 if (cur_action == 'U')
|
|
|
2236 newchar = UPCASE (buf, curchar);
|
|
|
2237 else if (cur_action == 'L')
|
|
|
2238 newchar = DOWNCASE (buf, curchar);
|
|
|
2239 else
|
|
|
2240 newchar = curchar;
|
|
|
2241 }
|
|
|
2242 if (newchar != curchar)
|
|
|
2243 buffer_replace_char (buf, pos, newchar, 0, 0);
|
|
|
2244 }
|
|
|
2245 }
|
|
|
2246
|
|
|
2247 /* frees the Dynarrs if necessary. */
|
|
|
2248 unbind_to (speccount, Qnil);
|
|
|
2249 end_multiple_change (buf, mc_count);
|
|
|
2250
|
|
|
2251 return Qnil;
|
|
|
2252 }
|
|
|
2253
|
|
|
2254 static Lisp_Object
|
|
|
2255 match_limit (Lisp_Object num, int beginningp)
|
|
|
2256 {
|
|
|
2257 /* This function has been Mule-ized. */
|
|
|
2258 int n;
|
|
|
2259
|
|
|
2260 CHECK_INT (num);
|
|
|
2261 n = XINT (num);
|
|
|
2262 if (n < 0 || n >= search_regs.num_regs)
|
|
|
2263 args_out_of_range (num, make_int (search_regs.num_regs));
|
|
|
2264 if (search_regs.num_regs == 0 ||
|
|
|
2265 search_regs.start[n] < 0)
|
|
|
2266 return Qnil;
|
|
|
2267 return make_int (beginningp ? search_regs.start[n] : search_regs.end[n]);
|
|
|
2268 }
|
|
|
2269
|
|
|
2270 DEFUN ("match-beginning", Fmatch_beginning, 1, 1, 0, /*
|
|
|
2271 Return position of start of text matched by last regexp search.
|
|
|
2272 NUM, specifies which parenthesized expression in the last regexp.
|
|
|
2273 Value is nil if NUMth pair didn't match, or there were less than NUM pairs.
|
|
|
2274 Zero means the entire text matched by the whole regexp or whole string.
|
|
|
2275 */
|
|
|
2276 (num))
|
|
|
2277 {
|
|
|
2278 return match_limit (num, 1);
|
|
|
2279 }
|
|
|
2280
|
|
|
2281 DEFUN ("match-end", Fmatch_end, 1, 1, 0, /*
|
|
|
2282 Return position of end of text matched by last regexp search.
|
|
|
2283 NUM specifies which parenthesized expression in the last regexp.
|
|
|
2284 Value is nil if NUMth pair didn't match, or there were less than NUM pairs.
|
|
|
2285 Zero means the entire text matched by the whole regexp or whole string.
|
|
|
2286 */
|
|
|
2287 (num))
|
|
|
2288 {
|
|
|
2289 return match_limit (num, 0);
|
|
|
2290 }
|
|
|
2291
|
|
|
2292 DEFUN ("match-data", Fmatch_data, 0, 2, 0, /*
|
|
|
2293 Return a list containing all info on what the last regexp search matched.
|
|
|
2294 Element 2N is `(match-beginning N)'; element 2N + 1 is `(match-end N)'.
|
|
|
2295 All the elements are markers or nil (nil if the Nth pair didn't match)
|
|
|
2296 if the last match was on a buffer; integers or nil if a string was matched.
|
|
|
2297 Use `store-match-data' to reinstate the data in this list.
|
|
|
2298
|
|
|
2299 If INTEGERS (the optional first argument) is non-nil, always use integers
|
|
|
2300 \(rather than markers) to represent buffer positions.
|
|
|
2301 If REUSE is a list, reuse it as part of the value. If REUSE is long enough
|
|
|
2302 to hold all the values, and if INTEGERS is non-nil, no consing is done.
|
|
|
2303 */
|
|
|
2304 (integers, reuse))
|
|
|
2305 {
|
|
|
2306 /* This function has been Mule-ized. */
|
|
|
2307 Lisp_Object tail, prev;
|
|
|
2308 Lisp_Object *data;
|
|
|
2309 int i;
|
|
|
2310 Charcount len;
|
|
|
2311
|
|
|
2312 if (NILP (last_thing_searched))
|
|
|
2313 /*error ("match-data called before any match found");*/
|
|
|
2314 return Qnil;
|
|
|
2315
|
|
|
2316 data = alloca_array (Lisp_Object, 2 * search_regs.num_regs);
|
|
|
2317
|
|
|
2318 len = -1;
|
|
|
2319 for (i = 0; i < search_regs.num_regs; i++)
|
|
|
2320 {
|
|
|
2321 Bufpos start = search_regs.start[i];
|
|
|
2322 if (start >= 0)
|
|
|
2323 {
|
|
|
2324 if (EQ (last_thing_searched, Qt)
|
|
|
2325 || !NILP (integers))
|
|
|
2326 {
|
|
|
2327 data[2 * i] = make_int (start);
|
|
|
2328 data[2 * i + 1] = make_int (search_regs.end[i]);
|
|
|
2329 }
|
|
|
2330 else if (BUFFERP (last_thing_searched))
|
|
|
2331 {
|
|
|
2332 data[2 * i] = Fmake_marker ();
|
|
|
2333 Fset_marker (data[2 * i],
|
|
|
2334 make_int (start),
|
|
|
2335 last_thing_searched);
|
|
|
2336 data[2 * i + 1] = Fmake_marker ();
|
|
|
2337 Fset_marker (data[2 * i + 1],
|
|
|
2338 make_int (search_regs.end[i]),
|
|
|
2339 last_thing_searched);
|
|
|
2340 }
|
|
|
2341 else
|
|
|
2342 /* last_thing_searched must always be Qt, a buffer, or Qnil. */
|
|
|
2343 abort ();
|
|
|
2344
|
|
|
2345 len = i;
|
|
|
2346 }
|
|
|
2347 else
|
|
|
2348 data[2 * i] = data [2 * i + 1] = Qnil;
|
|
|
2349 }
|
|
|
2350 if (!CONSP (reuse))
|
|
|
2351 return Flist (2 * len + 2, data);
|
|
|
2352
|
|
|
2353 /* If REUSE is a list, store as many value elements as will fit
|
|
|
2354 into the elements of REUSE. */
|
|
|
2355 for (prev = Qnil, i = 0, tail = reuse; CONSP (tail); i++, tail = XCDR (tail))
|
|
|
2356 {
|
|
|
2357 if (i < 2 * len + 2)
|
|
|
2358 XCAR (tail) = data[i];
|
|
|
2359 else
|
|
|
2360 XCAR (tail) = Qnil;
|
|
|
2361 prev = tail;
|
|
|
2362 }
|
|
|
2363
|
|
|
2364 /* If we couldn't fit all value elements into REUSE,
|
|
|
2365 cons up the rest of them and add them to the end of REUSE. */
|
|
|
2366 if (i < 2 * len + 2)
|
|
|
2367 XCDR (prev) = Flist (2 * len + 2 - i, data + i);
|
|
|
2368
|
|
|
2369 return reuse;
|
|
|
2370 }
|
|
|
2371
|
|
|
2372
|
|
|
2373 DEFUN ("store-match-data", Fstore_match_data, 1, 1, 0, /*
|
|
|
2374 Set internal data on last search match from elements of LIST.
|
|
|
2375 LIST should have been created by calling `match-data' previously.
|
|
|
2376 */
|
|
|
2377 (list))
|
|
|
2378 {
|
|
|
2379 /* This function has been Mule-ized. */
|
|
|
2380 REGISTER int i;
|
|
|
2381 REGISTER Lisp_Object marker;
|
|
|
2382 int num_regs;
|
|
|
2383 int length;
|
|
|
2384
|
|
|
2385 if (running_asynch_code)
|
|
|
2386 save_search_regs ();
|
|
|
2387
|
|
|
2388 CONCHECK_LIST (list);
|
|
|
2389
|
|
|
2390 /* Unless we find a marker with a buffer in LIST, assume that this
|
|
|
2391 match data came from a string. */
|
|
|
2392 last_thing_searched = Qt;
|
|
|
2393
|
|
|
2394 /* Allocate registers if they don't already exist. */
|
|
|
2395 length = XINT (Flength (list)) / 2;
|
|
|
2396 num_regs = search_regs.num_regs;
|
|
|
2397
|
|
|
2398 if (length > num_regs)
|
|
|
2399 {
|
|
|
2400 if (search_regs.num_regs == 0)
|
|
|
2401 {
|
|
|
2402 search_regs.start = xnew_array (regoff_t, length);
|
|
|
2403 search_regs.end = xnew_array (regoff_t, length);
|
|
|
2404 }
|
|
|
2405 else
|
|
|
2406 {
|
|
|
2407 XREALLOC_ARRAY (search_regs.start, regoff_t, length);
|
|
|
2408 XREALLOC_ARRAY (search_regs.end, regoff_t, length);
|
|
|
2409 }
|
|
|
2410
|
|
|
2411 search_regs.num_regs = length;
|
|
|
2412 }
|
|
|
2413
|
|
|
2414 for (i = 0; i < num_regs; i++)
|
|
|
2415 {
|
|
|
2416 marker = Fcar (list);
|
|
|
2417 if (NILP (marker))
|
|
|
2418 {
|
|
|
2419 search_regs.start[i] = -1;
|
|
|
2420 list = Fcdr (list);
|
|
|
2421 }
|
|
|
2422 else
|
|
|
2423 {
|
|
|
2424 if (MARKERP (marker))
|
|
|
2425 {
|
|
|
2426 if (XMARKER (marker)->buffer == 0)
|
|
|
2427 marker = Qzero;
|
|
|
2428 else
|
|
|
2429 XSETBUFFER (last_thing_searched, XMARKER (marker)->buffer);
|
|
|
2430 }
|
|
|
2431
|
|
|
2432 CHECK_INT_COERCE_MARKER (marker);
|
|
|
2433 search_regs.start[i] = XINT (marker);
|
|
|
2434 list = Fcdr (list);
|
|
|
2435
|
|
|
2436 marker = Fcar (list);
|
|
|
2437 if (MARKERP (marker) && XMARKER (marker)->buffer == 0)
|
|
|
2438 marker = Qzero;
|
|
|
2439
|
|
|
2440 CHECK_INT_COERCE_MARKER (marker);
|
|
|
2441 search_regs.end[i] = XINT (marker);
|
|
|
2442 }
|
|
|
2443 list = Fcdr (list);
|
|
|
2444 }
|
|
|
2445
|
|
|
2446 return Qnil;
|
|
|
2447 }
|
|
|
2448
|
|
|
2449 /* If non-zero the match data have been saved in saved_search_regs
|
|
|
2450 during the execution of a sentinel or filter. */
|
|
|
2451 static int search_regs_saved;
|
|
|
2452 static struct re_registers saved_search_regs;
|
|
|
2453
|
|
|
2454 /* Called from Flooking_at, Fstring_match, search_buffer, Fstore_match_data
|
|
|
2455 if asynchronous code (filter or sentinel) is running. */
|
|
|
2456 static void
|
|
|
2457 save_search_regs (void)
|
|
|
2458 {
|
|
|
2459 if (!search_regs_saved)
|
|
|
2460 {
|
|
|
2461 saved_search_regs.num_regs = search_regs.num_regs;
|
|
|
2462 saved_search_regs.start = search_regs.start;
|
|
|
2463 saved_search_regs.end = search_regs.end;
|
|
|
2464 search_regs.num_regs = 0;
|
|
|
2465 search_regs.start = 0;
|
|
|
2466 search_regs.end = 0;
|
|
|
2467
|
|
|
2468 search_regs_saved = 1;
|
|
|
2469 }
|
|
|
2470 }
|
|
|
2471
|
|
|
2472 /* Called upon exit from filters and sentinels. */
|
|
|
2473 void
|
|
|
2474 restore_match_data (void)
|
|
|
2475 {
|
|
|
2476 if (search_regs_saved)
|
|
|
2477 {
|
|
|
2478 if (search_regs.num_regs > 0)
|
|
|
2479 {
|
|
|
2480 xfree (search_regs.start);
|
|
|
2481 xfree (search_regs.end);
|
|
|
2482 }
|
|
|
2483 search_regs.num_regs = saved_search_regs.num_regs;
|
|
|
2484 search_regs.start = saved_search_regs.start;
|
|
|
2485 search_regs.end = saved_search_regs.end;
|
|
|
2486
|
|
|
2487 search_regs_saved = 0;
|
|
|
2488 }
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 /* Quote a string to inactivate reg-expr chars */
|
|
|
2492
|
|
|
2493 DEFUN ("regexp-quote", Fregexp_quote, 1, 1, 0, /*
|
|
|
2494 Return a regexp string which matches exactly STRING and nothing else.
|
|
|
2495 */
|
|
|
2496 (str))
|
|
|
2497 {
|
|
|
2498 REGISTER Bufbyte *in, *out, *end;
|
|
|
2499 REGISTER Bufbyte *temp;
|
|
|
2500
|
|
|
2501 CHECK_STRING (str);
|
|
|
2502
|
|
|
2503 temp = (Bufbyte *) alloca (XSTRING_LENGTH (str) * 2);
|
|
|
2504
|
|
|
2505 /* Now copy the data into the new string, inserting escapes. */
|
|
|
2506
|
|
|
2507 in = XSTRING_DATA (str);
|
|
|
2508 end = in + XSTRING_LENGTH (str);
|
|
|
2509 out = temp;
|
|
|
2510
|
|
|
2511 while (in < end)
|
|
|
2512 {
|
|
|
2513 Emchar c = charptr_emchar (in);
|
|
|
2514
|
|
|
2515 if (c == '[' || c == ']'
|
|
|
2516 || c == '*' || c == '.' || c == '\\'
|
|
|
2517 || c == '?' || c == '+'
|
|
|
2518 || c == '^' || c == '$')
|
|
|
2519 *out++ = '\\';
|
|
|
2520 out += set_charptr_emchar (out, c);
|
|
|
2521 INC_CHARPTR (in);
|
|
|
2522 }
|
|
|
2523
|
|
|
2524 return make_string (temp, out - temp);
|
|
|
2525 }
|
|
|
2526
|
|
|
2527 DEFUN ("set-word-regexp", Fset_word_regexp, 1, 1, 0, /*
|
|
|
2528 Set the regexp to be used to match a word in regular-expression searching.
|
|
|
2529 #### Not yet implemented. Currently does nothing.
|
|
|
2530 #### Do not use this yet. Its calling interface is likely to change.
|
|
|
2531 */
|
|
|
2532 (regexp))
|
|
|
2533 {
|
|
|
2534 return Qnil;
|
|
|
2535 }
|
|
|
2536
|
|
|
2537
|
|
|
2538 /************************************************************************/
|
|
|
2539 /* initialization */
|
|
|
2540 /************************************************************************/
|
|
|
2541
|
|
|
2542 void
|
|
|
2543 syms_of_search (void)
|
|
|
2544 {
|
|
|
2545
|
|
|
2546 deferror (&Qsearch_failed, "search-failed", "Search failed", Qerror);
|
|
|
2547 deferror (&Qinvalid_regexp, "invalid-regexp", "Invalid regexp", Qerror);
|
|
|
2548
|
|
|
2549 DEFSUBR (Flooking_at);
|
|
|
2550 DEFSUBR (Fposix_looking_at);
|
|
|
2551 DEFSUBR (Fstring_match);
|
|
|
2552 DEFSUBR (Fposix_string_match);
|
|
|
2553 DEFSUBR (Fskip_chars_forward);
|
|
|
2554 DEFSUBR (Fskip_chars_backward);
|
|
|
2555 DEFSUBR (Fskip_syntax_forward);
|
|
|
2556 DEFSUBR (Fskip_syntax_backward);
|
|
|
2557 DEFSUBR (Fsearch_forward);
|
|
|
2558 DEFSUBR (Fsearch_backward);
|
|
|
2559 DEFSUBR (Fword_search_forward);
|
|
|
2560 DEFSUBR (Fword_search_backward);
|
|
|
2561 DEFSUBR (Fre_search_forward);
|
|
|
2562 DEFSUBR (Fre_search_backward);
|
|
|
2563 DEFSUBR (Fposix_search_forward);
|
|
|
2564 DEFSUBR (Fposix_search_backward);
|
|
|
2565 DEFSUBR (Freplace_match);
|
|
|
2566 DEFSUBR (Fmatch_beginning);
|
|
|
2567 DEFSUBR (Fmatch_end);
|
|
|
2568 DEFSUBR (Fmatch_data);
|
|
|
2569 DEFSUBR (Fstore_match_data);
|
|
|
2570 DEFSUBR (Fregexp_quote);
|
|
|
2571 DEFSUBR (Fset_word_regexp);
|
|
|
2572 }
|
|
|
2573
|
|
|
2574 void
|
|
|
2575 reinit_vars_of_search (void)
|
|
|
2576 {
|
|
|
2577 int i;
|
|
|
2578
|
|
|
2579 last_thing_searched = Qnil;
|
|
|
2580 staticpro_nodump (&last_thing_searched);
|
|
|
2581
|
|
|
2582 for (i = 0; i < REGEXP_CACHE_SIZE; ++i)
|
|
|
2583 {
|
|
|
2584 searchbufs[i].buf.allocated = 100;
|
|
|
2585 searchbufs[i].buf.buffer = (unsigned char *) xmalloc (100);
|
|
|
2586 searchbufs[i].buf.fastmap = searchbufs[i].fastmap;
|
|
|
2587 searchbufs[i].regexp = Qnil;
|
|
|
2588 staticpro_nodump (&searchbufs[i].regexp);
|
|
|
2589 searchbufs[i].next = (i == REGEXP_CACHE_SIZE-1 ? 0 : &searchbufs[i+1]);
|
|
|
2590 }
|
|
|
2591 searchbuf_head = &searchbufs[0];
|
|
|
2592 }
|
|
|
2593
|
|
|
2594 void
|
|
|
2595 vars_of_search (void)
|
|
|
2596 {
|
|
|
2597 reinit_vars_of_search ();
|
|
|
2598
|
|
|
2599 DEFVAR_LISP ("forward-word-regexp", &Vforward_word_regexp /*
|
|
|
2600 *Regular expression to be used in `forward-word'.
|
|
|
2601 #### Not yet implemented.
|
|
|
2602 */ );
|
|
|
2603 Vforward_word_regexp = Qnil;
|
|
|
2604
|
|
|
2605 DEFVAR_LISP ("backward-word-regexp", &Vbackward_word_regexp /*
|
|
|
2606 *Regular expression to be used in `backward-word'.
|
|
|
2607 #### Not yet implemented.
|
|
|
2608 */ );
|
|
|
2609 Vbackward_word_regexp = Qnil;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 void
|
|
|
2613 complex_vars_of_search (void)
|
|
|
2614 {
|
|
|
2615 Vskip_chars_range_table = Fmake_range_table ();
|
|
|
2616 staticpro (&Vskip_chars_range_table);
|
|
|
2617 }
|
