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ccc6cda3 JA |
1 | /* pathexp.c -- The shell interface to the globbing library. */ |
2 | ||
ac50fbac | 3 | /* Copyright (C) 1995-2014 Free Software Foundation, Inc. |
ccc6cda3 JA |
4 | |
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
3185942a JA |
7 | Bash is free software: you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation, either version 3 of the License, or | |
10 | (at your option) any later version. | |
ccc6cda3 | 11 | |
3185942a JA |
12 | Bash is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
ccc6cda3 | 16 | |
3185942a JA |
17 | You should have received a copy of the GNU General Public License |
18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
ccc6cda3 JA |
20 | |
21 | #include "config.h" | |
22 | ||
23 | #include "bashtypes.h" | |
24 | #include <stdio.h> | |
25 | ||
26 | #if defined (HAVE_UNISTD_H) | |
27 | # include <unistd.h> | |
28 | #endif | |
29 | ||
30 | #include "bashansi.h" | |
31 | ||
32 | #include "shell.h" | |
33 | #include "pathexp.h" | |
34 | #include "flags.h" | |
35 | ||
7117c2d2 | 36 | #include "shmbutil.h" |
3185942a | 37 | #include "bashintl.h" |
7117c2d2 | 38 | |
f73dda09 | 39 | #include <glob/strmatch.h> |
b72432fd | 40 | |
7117c2d2 JA |
41 | static int glob_name_is_acceptable __P((const char *)); |
42 | static void ignore_globbed_names __P((char **, sh_ignore_func_t *)); | |
495aee44 | 43 | static char *split_ignorespec __P((char *, int *)); |
ac50fbac | 44 | |
b72432fd JA |
45 | #if defined (USE_POSIX_GLOB_LIBRARY) |
46 | # include <glob.h> | |
f73dda09 | 47 | typedef int posix_glob_errfunc_t __P((const char *, int)); |
b72432fd JA |
48 | #else |
49 | # include <glob/glob.h> | |
50 | #endif | |
ccc6cda3 JA |
51 | |
52 | /* Control whether * matches .files in globbing. */ | |
53 | int glob_dot_filenames; | |
54 | ||
cce855bc | 55 | /* Control whether the extended globbing features are enabled. */ |
0001803f | 56 | int extended_glob = EXTGLOB_DEFAULT; |
cce855bc | 57 | |
3185942a JA |
58 | /* Control enabling special handling of `**' */ |
59 | int glob_star = 0; | |
60 | ||
ccc6cda3 JA |
61 | /* Return nonzero if STRING has any unquoted special globbing chars in it. */ |
62 | int | |
63 | unquoted_glob_pattern_p (string) | |
64 | register char *string; | |
65 | { | |
66 | register int c; | |
7117c2d2 | 67 | char *send; |
fcf6ae7d | 68 | int open, bsquote; |
ccc6cda3 | 69 | |
7117c2d2 JA |
70 | DECLARE_MBSTATE; |
71 | ||
fcf6ae7d | 72 | open = bsquote = 0; |
7117c2d2 JA |
73 | send = string + strlen (string); |
74 | ||
ccc6cda3 JA |
75 | while (c = *string++) |
76 | { | |
77 | switch (c) | |
78 | { | |
79 | case '?': | |
80 | case '*': | |
81 | return (1); | |
82 | ||
83 | case '[': | |
84 | open++; | |
85 | continue; | |
86 | ||
87 | case ']': | |
88 | if (open) | |
89 | return (1); | |
90 | continue; | |
91 | ||
cce855bc JA |
92 | case '+': |
93 | case '@': | |
94 | case '!': | |
95 | if (*string == '(') /*)*/ | |
96 | return (1); | |
97 | continue; | |
98 | ||
d233b485 CR |
99 | /* A pattern can't end with a backslash, but a backslash in the pattern |
100 | can be removed by the matching engine, so we have to run it through | |
101 | globbing. */ | |
ccc6cda3 | 102 | case '\\': |
fcf6ae7d CR |
103 | if (*string != '\0' && *string != '/') |
104 | { | |
105 | bsquote = 1; | |
106 | string++; | |
107 | continue; | |
108 | } | |
109 | else if (*string == 0) | |
110 | return (0); | |
d233b485 CR |
111 | |
112 | case CTLESC: | |
ccc6cda3 JA |
113 | if (*string++ == '\0') |
114 | return (0); | |
115 | } | |
7117c2d2 JA |
116 | |
117 | /* Advance one fewer byte than an entire multibyte character to | |
118 | account for the auto-increment in the loop above. */ | |
119 | #ifdef HANDLE_MULTIBYTE | |
120 | string--; | |
121 | ADVANCE_CHAR_P (string, send - string); | |
122 | string++; | |
123 | #else | |
124 | ADVANCE_CHAR_P (string, send - string); | |
125 | #endif | |
ccc6cda3 | 126 | } |
fcf6ae7d CR |
127 | |
128 | return (bsquote ? 2 : 0); | |
ccc6cda3 JA |
129 | } |
130 | ||
f1be666c JA |
131 | /* Return 1 if C is a character that is `special' in a POSIX ERE and needs to |
132 | be quoted to match itself. */ | |
133 | static inline int | |
134 | ere_char (c) | |
135 | int c; | |
136 | { | |
137 | switch (c) | |
138 | { | |
139 | case '.': | |
140 | case '[': | |
141 | case '\\': | |
142 | case '(': | |
143 | case ')': | |
144 | case '*': | |
145 | case '+': | |
146 | case '?': | |
147 | case '{': | |
148 | case '|': | |
149 | case '^': | |
150 | case '$': | |
151 | return 1; | |
152 | default: | |
153 | return 0; | |
154 | } | |
155 | return (0); | |
156 | } | |
157 | ||
3185942a JA |
158 | int |
159 | glob_char_p (s) | |
160 | const char *s; | |
161 | { | |
162 | switch (*s) | |
163 | { | |
164 | case '*': | |
165 | case '[': | |
166 | case ']': | |
167 | case '?': | |
168 | case '\\': | |
169 | return 1; | |
170 | case '+': | |
171 | case '@': | |
172 | case '!': | |
ac50fbac | 173 | if (s[1] == '(') /*(*/ |
3185942a JA |
174 | return 1; |
175 | break; | |
176 | } | |
177 | return 0; | |
178 | } | |
179 | ||
ccc6cda3 JA |
180 | /* PATHNAME can contain characters prefixed by CTLESC; this indicates |
181 | that the character is to be quoted. We quote it here in the style | |
cce855bc | 182 | that the glob library recognizes. If flags includes QGLOB_CVTNULL, |
ccc6cda3 JA |
183 | we change quoted null strings (pathname[0] == CTLNUL) into empty |
184 | strings (pathname[0] == 0). If this is called after quote removal | |
cce855bc | 185 | is performed, (flags & QGLOB_CVTNULL) should be 0; if called when quote |
ccc6cda3 | 186 | removal has not been done (for example, before attempting to match a |
cce855bc | 187 | pattern while executing a case statement), flags should include |
d233b485 CR |
188 | QGLOB_CVTNULL. If flags includes QGLOB_CTLESC, we need to remove CTLESC |
189 | quoting CTLESC or CTLNUL (as if dequote_string were called). If flags | |
190 | includes QGLOB_FILENAME, appropriate quoting to match a filename should be | |
191 | performed. QGLOB_REGEXP means we're quoting for a Posix ERE (for | |
192 | [[ string =~ pat ]]) and that requires some special handling. */ | |
ccc6cda3 | 193 | char * |
cce855bc | 194 | quote_string_for_globbing (pathname, qflags) |
28ef6c31 | 195 | const char *pathname; |
cce855bc | 196 | int qflags; |
ccc6cda3 JA |
197 | { |
198 | char *temp; | |
cce855bc | 199 | register int i, j; |
d233b485 | 200 | int cclass, collsym, equiv, c, last_was_backslash; |
a0c0a00f | 201 | int savei, savej; |
ccc6cda3 | 202 | |
ac50fbac | 203 | temp = (char *)xmalloc (2 * strlen (pathname) + 1); |
ccc6cda3 | 204 | |
cce855bc | 205 | if ((qflags & QGLOB_CVTNULL) && QUOTED_NULL (pathname)) |
ccc6cda3 JA |
206 | { |
207 | temp[0] = '\0'; | |
208 | return temp; | |
209 | } | |
210 | ||
d233b485 | 211 | cclass = collsym = equiv = last_was_backslash = 0; |
cce855bc | 212 | for (i = j = 0; pathname[i]; i++) |
ccc6cda3 | 213 | { |
ac50fbac CR |
214 | /* Fix for CTLESC at the end of the string? */ |
215 | if (pathname[i] == CTLESC && pathname[i+1] == '\0') | |
216 | { | |
217 | temp[j++] = pathname[i++]; | |
218 | break; | |
219 | } | |
220 | /* If we are parsing regexp, turn CTLESC CTLESC into CTLESC. It's not an | |
221 | ERE special character, so we should just be able to pass it through. */ | |
d233b485 | 222 | else if ((qflags & (QGLOB_REGEXP|QGLOB_CTLESC)) && pathname[i] == CTLESC && (pathname[i+1] == CTLESC || pathname[i+1] == CTLNUL)) |
ac50fbac CR |
223 | { |
224 | i++; | |
225 | temp[j++] = pathname[i]; | |
226 | continue; | |
227 | } | |
228 | else if (pathname[i] == CTLESC) | |
28ef6c31 JA |
229 | { |
230 | if ((qflags & QGLOB_FILENAME) && pathname[i+1] == '/') | |
231 | continue; | |
ac50fbac | 232 | /* What to do if preceding char is backslash? */ |
25db9a70 | 233 | if (pathname[i+1] != CTLESC && (qflags & QGLOB_REGEXP) && ere_char (pathname[i+1]) == 0) |
f1be666c | 234 | continue; |
cce855bc | 235 | temp[j++] = '\\'; |
7117c2d2 JA |
236 | i++; |
237 | if (pathname[i] == '\0') | |
238 | break; | |
28ef6c31 | 239 | } |
ac50fbac CR |
240 | else if ((qflags & QGLOB_REGEXP) && (i == 0 || pathname[i-1] != CTLESC) && pathname[i] == '[') /*]*/ |
241 | { | |
ac50fbac | 242 | temp[j++] = pathname[i++]; /* open bracket */ |
a0c0a00f CR |
243 | savej = j; |
244 | savei = i; | |
ac50fbac | 245 | c = pathname[i++]; /* c == char after open bracket */ |
d233b485 CR |
246 | if (c == '^') /* ignore pattern negation */ |
247 | { | |
248 | temp[j++] = c; | |
249 | c = pathname[i++]; | |
250 | } | |
251 | if (c == ']') /* ignore right bracket if first char */ | |
252 | { | |
253 | temp[j++] = c; | |
254 | c = pathname[i++]; | |
255 | } | |
ac50fbac CR |
256 | do |
257 | { | |
258 | if (c == 0) | |
259 | goto endpat; | |
260 | else if (c == CTLESC) | |
261 | { | |
262 | /* skip c, check for EOS, let assignment at end of loop */ | |
263 | /* pathname[i] == backslash-escaped character */ | |
264 | if (pathname[i] == 0) | |
265 | goto endpat; | |
266 | temp[j++] = pathname[i++]; | |
267 | } | |
268 | else if (c == '[' && pathname[i] == ':') | |
269 | { | |
270 | temp[j++] = c; | |
271 | temp[j++] = pathname[i++]; | |
272 | cclass = 1; | |
273 | } | |
274 | else if (cclass && c == ':' && pathname[i] == ']') | |
275 | { | |
276 | temp[j++] = c; | |
277 | temp[j++] = pathname[i++]; | |
278 | cclass = 0; | |
279 | } | |
280 | else if (c == '[' && pathname[i] == '=') | |
281 | { | |
282 | temp[j++] = c; | |
283 | temp[j++] = pathname[i++]; | |
284 | if (pathname[i] == ']') | |
285 | temp[j++] = pathname[i++]; /* right brack can be in equiv */ | |
286 | equiv = 1; | |
287 | } | |
288 | else if (equiv && c == '=' && pathname[i] == ']') | |
289 | { | |
290 | temp[j++] = c; | |
291 | temp[j++] = pathname[i++]; | |
292 | equiv = 0; | |
293 | } | |
294 | else if (c == '[' && pathname[i] == '.') | |
295 | { | |
296 | temp[j++] = c; | |
297 | temp[j++] = pathname[i++]; | |
298 | if (pathname[i] == ']') | |
299 | temp[j++] = pathname[i++]; /* right brack can be in collsym */ | |
300 | collsym = 1; | |
301 | } | |
302 | else if (collsym && c == '.' && pathname[i] == ']') | |
303 | { | |
304 | temp[j++] = c; | |
305 | temp[j++] = pathname[i++]; | |
306 | collsym = 0; | |
307 | } | |
308 | else | |
309 | temp[j++] = c; | |
310 | } | |
a0c0a00f CR |
311 | while (((c = pathname[i++]) != ']') && c != 0); |
312 | ||
313 | /* If we don't find the closing bracket before we hit the end of | |
314 | the string, rescan string without treating it as a bracket | |
315 | expression (has implications for backslash and special ERE | |
316 | chars) */ | |
317 | if (c == 0) | |
318 | { | |
319 | i = savei - 1; /* -1 for autoincrement above */ | |
320 | j = savej; | |
321 | continue; | |
322 | } | |
323 | ||
ac50fbac CR |
324 | temp[j++] = c; /* closing right bracket */ |
325 | i--; /* increment will happen above in loop */ | |
326 | continue; /* skip double assignment below */ | |
327 | } | |
328 | else if (pathname[i] == '\\' && (qflags & QGLOB_REGEXP) == 0) | |
3185942a | 329 | { |
ac50fbac CR |
330 | /* XXX - if not quoting regexp, use backslash as quote char. Should |
331 | we just pass it through without treating it as special? That is | |
332 | what ksh93 seems to do. */ | |
333 | ||
334 | /* If we want to pass through backslash unaltered, comment out these | |
335 | lines. */ | |
3185942a | 336 | temp[j++] = '\\'; |
ac50fbac | 337 | |
3185942a JA |
338 | i++; |
339 | if (pathname[i] == '\0') | |
340 | break; | |
d233b485 CR |
341 | /* If we are turning CTLESC CTLESC into CTLESC, we need to do that |
342 | even when the first CTLESC is preceded by a backslash. */ | |
343 | if ((qflags & QGLOB_CTLESC) && pathname[i] == CTLESC && (pathname[i+1] == CTLESC || pathname[i+1] == CTLNUL)) | |
344 | i++; /* skip over the CTLESC */ | |
3185942a | 345 | } |
ac50fbac CR |
346 | else if (pathname[i] == '\\' && (qflags & QGLOB_REGEXP)) |
347 | last_was_backslash = 1; | |
7117c2d2 | 348 | temp[j++] = pathname[i]; |
ccc6cda3 | 349 | } |
ac50fbac | 350 | endpat: |
cce855bc | 351 | temp[j] = '\0'; |
ccc6cda3 JA |
352 | |
353 | return (temp); | |
354 | } | |
355 | ||
356 | char * | |
357 | quote_globbing_chars (string) | |
a0c0a00f | 358 | const char *string; |
ccc6cda3 | 359 | { |
7117c2d2 | 360 | size_t slen; |
a0c0a00f CR |
361 | char *temp, *t; |
362 | const char *s, *send; | |
7117c2d2 JA |
363 | DECLARE_MBSTATE; |
364 | ||
365 | slen = strlen (string); | |
366 | send = string + slen; | |
ccc6cda3 | 367 | |
7117c2d2 | 368 | temp = (char *)xmalloc (slen * 2 + 1); |
ccc6cda3 JA |
369 | for (t = temp, s = string; *s; ) |
370 | { | |
3185942a JA |
371 | if (glob_char_p (s)) |
372 | *t++ = '\\'; | |
7117c2d2 JA |
373 | |
374 | /* Copy a single (possibly multibyte) character from s to t, | |
ac50fbac | 375 | incrementing both. */ |
7117c2d2 | 376 | COPY_CHAR_P (t, s, send); |
ccc6cda3 JA |
377 | } |
378 | *t = '\0'; | |
379 | return temp; | |
380 | } | |
381 | ||
382 | /* Call the glob library to do globbing on PATHNAME. */ | |
383 | char ** | |
384 | shell_glob_filename (pathname) | |
28ef6c31 | 385 | const char *pathname; |
ccc6cda3 JA |
386 | { |
387 | #if defined (USE_POSIX_GLOB_LIBRARY) | |
388 | register int i; | |
28ef6c31 | 389 | char *temp, **results; |
ccc6cda3 JA |
390 | glob_t filenames; |
391 | int glob_flags; | |
392 | ||
cce855bc | 393 | temp = quote_string_for_globbing (pathname, QGLOB_FILENAME); |
ccc6cda3 JA |
394 | |
395 | filenames.gl_offs = 0; | |
396 | ||
b72432fd | 397 | # if defined (GLOB_PERIOD) |
ccc6cda3 | 398 | glob_flags = glob_dot_filenames ? GLOB_PERIOD : 0; |
b72432fd JA |
399 | # else |
400 | glob_flags = 0; | |
401 | # endif /* !GLOB_PERIOD */ | |
402 | ||
ccc6cda3 JA |
403 | glob_flags |= (GLOB_ERR | GLOB_DOOFFS); |
404 | ||
f73dda09 | 405 | i = glob (temp, glob_flags, (posix_glob_errfunc_t *)NULL, &filenames); |
ccc6cda3 JA |
406 | |
407 | free (temp); | |
408 | ||
28ef6c31 | 409 | if (i == GLOB_NOSPACE || i == GLOB_ABORTED) |
ccc6cda3 | 410 | return ((char **)NULL); |
b72432fd JA |
411 | else if (i == GLOB_NOMATCH) |
412 | filenames.gl_pathv = (char **)NULL; | |
413 | else if (i != 0) /* other error codes not in POSIX.2 */ | |
cce855bc | 414 | filenames.gl_pathv = (char **)NULL; |
ccc6cda3 | 415 | |
bb70624e JA |
416 | results = filenames.gl_pathv; |
417 | ||
418 | if (results && ((GLOB_FAILED (results)) == 0)) | |
419 | { | |
420 | if (should_ignore_glob_matches ()) | |
421 | ignore_glob_matches (results); | |
422 | if (results && results[0]) | |
7117c2d2 | 423 | strvec_sort (results); |
bb70624e JA |
424 | else |
425 | { | |
426 | FREE (results); | |
427 | results = (char **)NULL; | |
428 | } | |
429 | } | |
430 | ||
431 | return (results); | |
ccc6cda3 JA |
432 | |
433 | #else /* !USE_POSIX_GLOB_LIBRARY */ | |
434 | ||
435 | char *temp, **results; | |
d233b485 | 436 | int gflags; |
ccc6cda3 JA |
437 | |
438 | noglob_dot_filenames = glob_dot_filenames == 0; | |
439 | ||
cce855bc | 440 | temp = quote_string_for_globbing (pathname, QGLOB_FILENAME); |
d233b485 CR |
441 | gflags = glob_star ? GX_GLOBSTAR : 0; |
442 | results = glob_filename (temp, gflags); | |
ccc6cda3 JA |
443 | free (temp); |
444 | ||
445 | if (results && ((GLOB_FAILED (results)) == 0)) | |
446 | { | |
447 | if (should_ignore_glob_matches ()) | |
448 | ignore_glob_matches (results); | |
449 | if (results && results[0]) | |
7117c2d2 | 450 | strvec_sort (results); |
ccc6cda3 JA |
451 | else |
452 | { | |
453 | FREE (results); | |
454 | results = (char **)&glob_error_return; | |
455 | } | |
456 | } | |
457 | ||
458 | return (results); | |
459 | #endif /* !USE_POSIX_GLOB_LIBRARY */ | |
460 | } | |
461 | ||
462 | /* Stuff for GLOBIGNORE. */ | |
463 | ||
464 | static struct ignorevar globignore = | |
465 | { | |
466 | "GLOBIGNORE", | |
467 | (struct ign *)0, | |
468 | 0, | |
469 | (char *)0, | |
f73dda09 | 470 | (sh_iv_item_func_t *)0, |
ccc6cda3 JA |
471 | }; |
472 | ||
473 | /* Set up to ignore some glob matches because the value of GLOBIGNORE | |
474 | has changed. If GLOBIGNORE is being unset, we also need to disable | |
475 | the globbing of filenames beginning with a `.'. */ | |
476 | void | |
477 | setup_glob_ignore (name) | |
478 | char *name; | |
479 | { | |
480 | char *v; | |
481 | ||
482 | v = get_string_value (name); | |
483 | setup_ignore_patterns (&globignore); | |
484 | ||
485 | if (globignore.num_ignores) | |
486 | glob_dot_filenames = 1; | |
487 | else if (v == 0) | |
488 | glob_dot_filenames = 0; | |
489 | } | |
490 | ||
491 | int | |
492 | should_ignore_glob_matches () | |
493 | { | |
494 | return globignore.num_ignores; | |
495 | } | |
496 | ||
497 | /* Return 0 if NAME matches a pattern in the globignore.ignores list. */ | |
498 | static int | |
499 | glob_name_is_acceptable (name) | |
f73dda09 | 500 | const char *name; |
ccc6cda3 JA |
501 | { |
502 | struct ign *p; | |
cce855bc | 503 | int flags; |
ccc6cda3 JA |
504 | |
505 | /* . and .. are never matched */ | |
506 | if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' && name[2] == '\0'))) | |
507 | return (0); | |
508 | ||
a0c0a00f | 509 | flags = FNM_PATHNAME | FNMATCH_EXTFLAG | FNMATCH_NOCASEGLOB; |
ccc6cda3 JA |
510 | for (p = globignore.ignores; p->val; p++) |
511 | { | |
f73dda09 | 512 | if (strmatch (p->val, (char *)name, flags) != FNM_NOMATCH) |
28ef6c31 | 513 | return (0); |
ccc6cda3 JA |
514 | } |
515 | return (1); | |
516 | } | |
517 | ||
518 | /* Internal function to test whether filenames in NAMES should be | |
519 | ignored. NAME_FUNC is a pointer to a function to call with each | |
520 | name. It returns non-zero if the name is acceptable to the particular | |
521 | ignore function which called _ignore_names; zero if the name should | |
522 | be removed from NAMES. */ | |
523 | ||
524 | static void | |
525 | ignore_globbed_names (names, name_func) | |
526 | char **names; | |
f73dda09 | 527 | sh_ignore_func_t *name_func; |
ccc6cda3 JA |
528 | { |
529 | char **newnames; | |
530 | int n, i; | |
531 | ||
532 | for (i = 0; names[i]; i++) | |
533 | ; | |
7117c2d2 | 534 | newnames = strvec_create (i + 1); |
ccc6cda3 JA |
535 | |
536 | for (n = i = 0; names[i]; i++) | |
537 | { | |
538 | if ((*name_func) (names[i])) | |
28ef6c31 | 539 | newnames[n++] = names[i]; |
ccc6cda3 JA |
540 | else |
541 | free (names[i]); | |
542 | } | |
543 | ||
544 | newnames[n] = (char *)NULL; | |
545 | ||
546 | if (n == 0) | |
547 | { | |
548 | names[0] = (char *)NULL; | |
549 | free (newnames); | |
550 | return; | |
551 | } | |
552 | ||
553 | /* Copy the acceptable names from NEWNAMES back to NAMES and set the | |
554 | new array end. */ | |
555 | for (n = 0; newnames[n]; n++) | |
556 | names[n] = newnames[n]; | |
557 | names[n] = (char *)NULL; | |
d166f048 | 558 | free (newnames); |
ccc6cda3 JA |
559 | } |
560 | ||
561 | void | |
562 | ignore_glob_matches (names) | |
563 | char **names; | |
564 | { | |
565 | if (globignore.num_ignores == 0) | |
566 | return; | |
567 | ||
568 | ignore_globbed_names (names, glob_name_is_acceptable); | |
569 | } | |
570 | ||
495aee44 CR |
571 | static char * |
572 | split_ignorespec (s, ip) | |
573 | char *s; | |
574 | int *ip; | |
575 | { | |
576 | char *t; | |
577 | int n, i; | |
578 | ||
579 | if (s == 0) | |
580 | return 0; | |
581 | ||
582 | i = *ip; | |
583 | if (s[i] == 0) | |
584 | return 0; | |
585 | ||
a0c0a00f | 586 | n = skip_to_delim (s, i, ":", SD_NOJMP|SD_EXTGLOB|SD_GLOB); |
495aee44 CR |
587 | t = substring (s, i, n); |
588 | ||
589 | if (s[n] == ':') | |
590 | n++; | |
591 | *ip = n; | |
592 | return t; | |
593 | } | |
594 | ||
ccc6cda3 JA |
595 | void |
596 | setup_ignore_patterns (ivp) | |
597 | struct ignorevar *ivp; | |
598 | { | |
599 | int numitems, maxitems, ptr; | |
600 | char *colon_bit, *this_ignoreval; | |
601 | struct ign *p; | |
602 | ||
603 | this_ignoreval = get_string_value (ivp->varname); | |
604 | ||
605 | /* If nothing has changed then just exit now. */ | |
606 | if ((this_ignoreval && ivp->last_ignoreval && STREQ (this_ignoreval, ivp->last_ignoreval)) || | |
607 | (!this_ignoreval && !ivp->last_ignoreval)) | |
608 | return; | |
609 | ||
610 | /* Oops. The ignore variable has changed. Re-parse it. */ | |
611 | ivp->num_ignores = 0; | |
612 | ||
613 | if (ivp->ignores) | |
614 | { | |
615 | for (p = ivp->ignores; p->val; p++) | |
616 | free(p->val); | |
617 | free (ivp->ignores); | |
618 | ivp->ignores = (struct ign *)NULL; | |
619 | } | |
620 | ||
621 | if (ivp->last_ignoreval) | |
622 | { | |
623 | free (ivp->last_ignoreval); | |
624 | ivp->last_ignoreval = (char *)NULL; | |
625 | } | |
626 | ||
627 | if (this_ignoreval == 0 || *this_ignoreval == '\0') | |
628 | return; | |
629 | ||
630 | ivp->last_ignoreval = savestring (this_ignoreval); | |
631 | ||
632 | numitems = maxitems = ptr = 0; | |
633 | ||
495aee44 | 634 | #if 0 |
ccc6cda3 | 635 | while (colon_bit = extract_colon_unit (this_ignoreval, &ptr)) |
495aee44 CR |
636 | #else |
637 | while (colon_bit = split_ignorespec (this_ignoreval, &ptr)) | |
638 | #endif | |
ccc6cda3 JA |
639 | { |
640 | if (numitems + 1 >= maxitems) | |
641 | { | |
642 | maxitems += 10; | |
643 | ivp->ignores = (struct ign *)xrealloc (ivp->ignores, maxitems * sizeof (struct ign)); | |
644 | } | |
645 | ivp->ignores[numitems].val = colon_bit; | |
646 | ivp->ignores[numitems].len = strlen (colon_bit); | |
647 | ivp->ignores[numitems].flags = 0; | |
648 | if (ivp->item_func) | |
28ef6c31 | 649 | (*ivp->item_func) (&ivp->ignores[numitems]); |
ccc6cda3 JA |
650 | numitems++; |
651 | } | |
652 | ivp->ignores[numitems].val = (char *)NULL; | |
653 | ivp->num_ignores = numitems; | |
654 | } |