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Commit | Line | Data |
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83b5d2f5 | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
83b5d2f5 | 3 | #include "grep.h" |
cbd53a21 | 4 | #include "object-store.h" |
60ecac98 | 5 | #include "userdiff.h" |
6bfce93e | 6 | #include "xdiff-interface.h" |
335ec3bf JK |
7 | #include "diff.h" |
8 | #include "diffcore.h" | |
5c1ebcca | 9 | #include "commit.h" |
793dc676 | 10 | #include "quote.h" |
83b5d2f5 | 11 | |
07a7d656 JH |
12 | static int grep_source_load(struct grep_source *gs); |
13 | static int grep_source_is_binary(struct grep_source *gs); | |
14 | ||
7687a054 JH |
15 | static struct grep_opt grep_defaults; |
16 | ||
379642bc BW |
17 | static void std_output(struct grep_opt *opt, const void *buf, size_t size) |
18 | { | |
19 | fwrite(buf, size, 1, stdout); | |
20 | } | |
21 | ||
75e5e9c3 SB |
22 | static void color_set(char *dst, const char *color_bytes) |
23 | { | |
24 | xsnprintf(dst, COLOR_MAXLEN, "%s", color_bytes); | |
25 | } | |
26 | ||
7687a054 JH |
27 | /* |
28 | * Initialize the grep_defaults template with hardcoded defaults. | |
29 | * We could let the compiler do this, but without C99 initializers | |
30 | * the code gets unwieldy and unreadable, so... | |
31 | */ | |
32 | void init_grep_defaults(void) | |
33 | { | |
34 | struct grep_opt *opt = &grep_defaults; | |
918d4e1c JH |
35 | static int run_once; |
36 | ||
37 | if (run_once) | |
38 | return; | |
39 | run_once++; | |
7687a054 JH |
40 | |
41 | memset(opt, 0, sizeof(*opt)); | |
42 | opt->relative = 1; | |
43 | opt->pathname = 1; | |
7687a054 JH |
44 | opt->max_depth = -1; |
45 | opt->pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED; | |
7ce4fb94 JK |
46 | color_set(opt->color_context, ""); |
47 | color_set(opt->color_filename, ""); | |
48 | color_set(opt->color_function, ""); | |
49 | color_set(opt->color_lineno, ""); | |
50 | color_set(opt->color_match_context, GIT_COLOR_BOLD_RED); | |
51 | color_set(opt->color_match_selected, GIT_COLOR_BOLD_RED); | |
52 | color_set(opt->color_selected, ""); | |
53 | color_set(opt->color_sep, GIT_COLOR_CYAN); | |
7687a054 | 54 | opt->color = -1; |
379642bc | 55 | opt->output = std_output; |
7687a054 JH |
56 | } |
57 | ||
58 | static int parse_pattern_type_arg(const char *opt, const char *arg) | |
59 | { | |
60 | if (!strcmp(arg, "default")) | |
61 | return GREP_PATTERN_TYPE_UNSPECIFIED; | |
62 | else if (!strcmp(arg, "basic")) | |
63 | return GREP_PATTERN_TYPE_BRE; | |
64 | else if (!strcmp(arg, "extended")) | |
65 | return GREP_PATTERN_TYPE_ERE; | |
66 | else if (!strcmp(arg, "fixed")) | |
67 | return GREP_PATTERN_TYPE_FIXED; | |
68 | else if (!strcmp(arg, "perl")) | |
69 | return GREP_PATTERN_TYPE_PCRE; | |
70 | die("bad %s argument: %s", opt, arg); | |
71 | } | |
72 | ||
73 | /* | |
74 | * Read the configuration file once and store it in | |
75 | * the grep_defaults template. | |
76 | */ | |
77 | int grep_config(const char *var, const char *value, void *cb) | |
78 | { | |
79 | struct grep_opt *opt = &grep_defaults; | |
80 | char *color = NULL; | |
81 | ||
82 | if (userdiff_config(var, value) < 0) | |
83 | return -1; | |
84 | ||
85 | if (!strcmp(var, "grep.extendedregexp")) { | |
c7e38551 | 86 | opt->extended_regexp_option = git_config_bool(var, value); |
7687a054 JH |
87 | return 0; |
88 | } | |
89 | ||
90 | if (!strcmp(var, "grep.patterntype")) { | |
91 | opt->pattern_type_option = parse_pattern_type_arg(var, value); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | if (!strcmp(var, "grep.linenumber")) { | |
96 | opt->linenum = git_config_bool(var, value); | |
97 | return 0; | |
98 | } | |
99 | ||
6453f7b3 AS |
100 | if (!strcmp(var, "grep.fullname")) { |
101 | opt->relative = !git_config_bool(var, value); | |
102 | return 0; | |
103 | } | |
104 | ||
7687a054 JH |
105 | if (!strcmp(var, "color.grep")) |
106 | opt->color = git_config_colorbool(var, value); | |
107 | else if (!strcmp(var, "color.grep.context")) | |
108 | color = opt->color_context; | |
109 | else if (!strcmp(var, "color.grep.filename")) | |
110 | color = opt->color_filename; | |
111 | else if (!strcmp(var, "color.grep.function")) | |
112 | color = opt->color_function; | |
113 | else if (!strcmp(var, "color.grep.linenumber")) | |
114 | color = opt->color_lineno; | |
79a77109 RS |
115 | else if (!strcmp(var, "color.grep.matchcontext")) |
116 | color = opt->color_match_context; | |
117 | else if (!strcmp(var, "color.grep.matchselected")) | |
118 | color = opt->color_match_selected; | |
7687a054 JH |
119 | else if (!strcmp(var, "color.grep.selected")) |
120 | color = opt->color_selected; | |
121 | else if (!strcmp(var, "color.grep.separator")) | |
122 | color = opt->color_sep; | |
79a77109 RS |
123 | else if (!strcmp(var, "color.grep.match")) { |
124 | int rc = 0; | |
125 | if (!value) | |
126 | return config_error_nonbool(var); | |
bf1f639e JH |
127 | rc |= color_parse(value, opt->color_match_context); |
128 | rc |= color_parse(value, opt->color_match_selected); | |
79a77109 RS |
129 | return rc; |
130 | } | |
7687a054 JH |
131 | |
132 | if (color) { | |
133 | if (!value) | |
134 | return config_error_nonbool(var); | |
f6c5a296 | 135 | return color_parse(value, color); |
7687a054 JH |
136 | } |
137 | return 0; | |
138 | } | |
139 | ||
140 | /* | |
141 | * Initialize one instance of grep_opt and copy the | |
142 | * default values from the template we read the configuration | |
143 | * information in an earlier call to git_config(grep_config). | |
144 | */ | |
145 | void grep_init(struct grep_opt *opt, const char *prefix) | |
146 | { | |
147 | struct grep_opt *def = &grep_defaults; | |
148 | ||
149 | memset(opt, 0, sizeof(*opt)); | |
150 | opt->prefix = prefix; | |
151 | opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; | |
152 | opt->pattern_tail = &opt->pattern_list; | |
153 | opt->header_tail = &opt->header_list; | |
154 | ||
155 | opt->color = def->color; | |
156 | opt->extended_regexp_option = def->extended_regexp_option; | |
157 | opt->pattern_type_option = def->pattern_type_option; | |
158 | opt->linenum = def->linenum; | |
159 | opt->max_depth = def->max_depth; | |
160 | opt->pathname = def->pathname; | |
7687a054 | 161 | opt->relative = def->relative; |
379642bc | 162 | opt->output = def->output; |
7687a054 | 163 | |
7ce4fb94 JK |
164 | color_set(opt->color_context, def->color_context); |
165 | color_set(opt->color_filename, def->color_filename); | |
166 | color_set(opt->color_function, def->color_function); | |
167 | color_set(opt->color_lineno, def->color_lineno); | |
168 | color_set(opt->color_match_context, def->color_match_context); | |
169 | color_set(opt->color_match_selected, def->color_match_selected); | |
170 | color_set(opt->color_selected, def->color_selected); | |
171 | color_set(opt->color_sep, def->color_sep); | |
7687a054 | 172 | } |
07a7d656 | 173 | |
8465541e | 174 | static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
c5c31d33 | 175 | { |
07a3d411 ÆAB |
176 | /* |
177 | * When committing to the pattern type by setting the relevant | |
178 | * fields in grep_opt it's generally not necessary to zero out | |
179 | * the fields we're not choosing, since they won't have been | |
180 | * set by anything. The extended_regexp_option field is the | |
181 | * only exception to this. | |
182 | * | |
183 | * This is because in the process of parsing grep.patternType | |
184 | * & grep.extendedRegexp we set opt->pattern_type_option and | |
185 | * opt->extended_regexp_option, respectively. We then | |
186 | * internally use opt->extended_regexp_option to see if we're | |
187 | * compiling an ERE. It must be unset if that's not actually | |
188 | * the case. | |
189 | */ | |
190 | if (pattern_type != GREP_PATTERN_TYPE_ERE && | |
191 | opt->extended_regexp_option) | |
192 | opt->extended_regexp_option = 0; | |
193 | ||
c5c31d33 JH |
194 | switch (pattern_type) { |
195 | case GREP_PATTERN_TYPE_UNSPECIFIED: | |
196 | /* fall through */ | |
197 | ||
198 | case GREP_PATTERN_TYPE_BRE: | |
c5c31d33 JH |
199 | break; |
200 | ||
201 | case GREP_PATTERN_TYPE_ERE: | |
07a3d411 | 202 | opt->extended_regexp_option = 1; |
c5c31d33 JH |
203 | break; |
204 | ||
205 | case GREP_PATTERN_TYPE_FIXED: | |
206 | opt->fixed = 1; | |
c5c31d33 JH |
207 | break; |
208 | ||
209 | case GREP_PATTERN_TYPE_PCRE: | |
94da9193 | 210 | #ifdef USE_LIBPCRE2 |
94da9193 ÆAB |
211 | opt->pcre2 = 1; |
212 | #else | |
213 | /* | |
214 | * It's important that pcre1 always be assigned to | |
215 | * even when there's no USE_LIBPCRE* defined. We still | |
216 | * call the PCRE stub function, it just dies with | |
217 | * "cannot use Perl-compatible regexes[...]". | |
218 | */ | |
6d4b5747 | 219 | opt->pcre1 = 1; |
94da9193 | 220 | #endif |
c5c31d33 JH |
221 | break; |
222 | } | |
223 | } | |
224 | ||
8465541e JH |
225 | void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
226 | { | |
227 | if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) | |
228 | grep_set_pattern_type_option(pattern_type, opt); | |
229 | else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) | |
230 | grep_set_pattern_type_option(opt->pattern_type_option, opt); | |
231 | else if (opt->extended_regexp_option) | |
07a3d411 ÆAB |
232 | /* |
233 | * This branch *must* happen after setting from the | |
234 | * opt->pattern_type_option above, we don't want | |
235 | * grep.extendedRegexp to override grep.patternType! | |
236 | */ | |
8465541e JH |
237 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); |
238 | } | |
239 | ||
fc456751 RS |
240 | static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, |
241 | const char *origin, int no, | |
242 | enum grep_pat_token t, | |
243 | enum grep_header_field field) | |
a4d7d2c6 JH |
244 | { |
245 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
526a858a | 246 | p->pattern = xmemdupz(pat, patlen); |
fc456751 RS |
247 | p->patternlen = patlen; |
248 | p->origin = origin; | |
249 | p->no = no; | |
250 | p->token = t; | |
a4d7d2c6 | 251 | p->field = field; |
fc456751 RS |
252 | return p; |
253 | } | |
254 | ||
2b3873ff RS |
255 | static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p) |
256 | { | |
257 | **tail = p; | |
258 | *tail = &p->next; | |
a4d7d2c6 | 259 | p->next = NULL; |
526a858a RS |
260 | |
261 | switch (p->token) { | |
262 | case GREP_PATTERN: /* atom */ | |
263 | case GREP_PATTERN_HEAD: | |
264 | case GREP_PATTERN_BODY: | |
265 | for (;;) { | |
266 | struct grep_pat *new_pat; | |
267 | size_t len = 0; | |
268 | char *cp = p->pattern + p->patternlen, *nl = NULL; | |
269 | while (++len <= p->patternlen) { | |
270 | if (*(--cp) == '\n') { | |
271 | nl = cp; | |
272 | break; | |
273 | } | |
274 | } | |
275 | if (!nl) | |
276 | break; | |
277 | new_pat = create_grep_pat(nl + 1, len - 1, p->origin, | |
278 | p->no, p->token, p->field); | |
279 | new_pat->next = p->next; | |
280 | if (!p->next) | |
281 | *tail = &new_pat->next; | |
282 | p->next = new_pat; | |
283 | *nl = '\0'; | |
284 | p->patternlen -= len; | |
285 | } | |
286 | break; | |
287 | default: | |
288 | break; | |
289 | } | |
2b3873ff RS |
290 | } |
291 | ||
fc456751 RS |
292 | void append_header_grep_pattern(struct grep_opt *opt, |
293 | enum grep_header_field field, const char *pat) | |
294 | { | |
295 | struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, | |
296 | GREP_PATTERN_HEAD, field); | |
baa6378f JH |
297 | if (field == GREP_HEADER_REFLOG) |
298 | opt->use_reflog_filter = 1; | |
2b3873ff | 299 | do_append_grep_pat(&opt->header_tail, p); |
a4d7d2c6 JH |
300 | } |
301 | ||
83b5d2f5 JH |
302 | void append_grep_pattern(struct grep_opt *opt, const char *pat, |
303 | const char *origin, int no, enum grep_pat_token t) | |
ed40a095 RS |
304 | { |
305 | append_grep_pat(opt, pat, strlen(pat), origin, no, t); | |
306 | } | |
307 | ||
308 | void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, | |
309 | const char *origin, int no, enum grep_pat_token t) | |
83b5d2f5 | 310 | { |
fc456751 | 311 | struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0); |
2b3873ff | 312 | do_append_grep_pat(&opt->pattern_tail, p); |
83b5d2f5 JH |
313 | } |
314 | ||
5b594f45 FK |
315 | struct grep_opt *grep_opt_dup(const struct grep_opt *opt) |
316 | { | |
317 | struct grep_pat *pat; | |
318 | struct grep_opt *ret = xmalloc(sizeof(struct grep_opt)); | |
319 | *ret = *opt; | |
320 | ||
321 | ret->pattern_list = NULL; | |
322 | ret->pattern_tail = &ret->pattern_list; | |
323 | ||
324 | for(pat = opt->pattern_list; pat != NULL; pat = pat->next) | |
325 | { | |
326 | if(pat->token == GREP_PATTERN_HEAD) | |
327 | append_header_grep_pattern(ret, pat->field, | |
328 | pat->pattern); | |
329 | else | |
ed40a095 RS |
330 | append_grep_pat(ret, pat->pattern, pat->patternlen, |
331 | pat->origin, pat->no, pat->token); | |
5b594f45 FK |
332 | } |
333 | ||
334 | return ret; | |
335 | } | |
336 | ||
a30c148a MK |
337 | static NORETURN void compile_regexp_failed(const struct grep_pat *p, |
338 | const char *error) | |
339 | { | |
340 | char where[1024]; | |
341 | ||
342 | if (p->no) | |
19bdd3e7 | 343 | xsnprintf(where, sizeof(where), "In '%s' at %d, ", p->origin, p->no); |
a30c148a | 344 | else if (p->origin) |
19bdd3e7 | 345 | xsnprintf(where, sizeof(where), "%s, ", p->origin); |
a30c148a MK |
346 | else |
347 | where[0] = 0; | |
348 | ||
349 | die("%s'%s': %s", where, p->pattern, error); | |
350 | } | |
351 | ||
543f1c0c ÆAB |
352 | static int is_fixed(const char *s, size_t len) |
353 | { | |
354 | size_t i; | |
355 | ||
356 | for (i = 0; i < len; i++) { | |
357 | if (is_regex_special(s[i])) | |
358 | return 0; | |
359 | } | |
360 | ||
361 | return 1; | |
362 | } | |
363 | ||
219e65b6 ÆAB |
364 | static int has_null(const char *s, size_t len) |
365 | { | |
366 | /* | |
367 | * regcomp cannot accept patterns with NULs so when using it | |
368 | * we consider any pattern containing a NUL fixed. | |
369 | */ | |
370 | if (memchr(s, 0, len)) | |
371 | return 1; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
3485bea1 | 376 | #ifdef USE_LIBPCRE1 |
6d4b5747 | 377 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
378 | { |
379 | const char *error; | |
380 | int erroffset; | |
fba4f125 | 381 | int options = PCRE_MULTILINE; |
63e7e9d8 | 382 | |
9d9babb8 NTND |
383 | if (opt->ignore_case) { |
384 | if (has_non_ascii(p->pattern)) | |
6d4b5747 | 385 | p->pcre1_tables = pcre_maketables(); |
63e7e9d8 | 386 | options |= PCRE_CASELESS; |
9d9babb8 | 387 | } |
18547aac NTND |
388 | if (is_utf8_locale() && has_non_ascii(p->pattern)) |
389 | options |= PCRE_UTF8; | |
63e7e9d8 | 390 | |
6d4b5747 ÆAB |
391 | p->pcre1_regexp = pcre_compile(p->pattern, options, &error, &erroffset, |
392 | p->pcre1_tables); | |
393 | if (!p->pcre1_regexp) | |
63e7e9d8 MK |
394 | compile_regexp_failed(p, error); |
395 | ||
2fff1e19 | 396 | p->pcre1_extra_info = pcre_study(p->pcre1_regexp, GIT_PCRE_STUDY_JIT_COMPILE, &error); |
6d4b5747 | 397 | if (!p->pcre1_extra_info && error) |
63e7e9d8 | 398 | die("%s", error); |
fbaceaac | 399 | |
e87de7ca | 400 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
401 | pcre_config(PCRE_CONFIG_JIT, &p->pcre1_jit_on); |
402 | if (p->pcre1_jit_on == 1) { | |
403 | p->pcre1_jit_stack = pcre_jit_stack_alloc(1, 1024 * 1024); | |
404 | if (!p->pcre1_jit_stack) | |
405 | die("Couldn't allocate PCRE JIT stack"); | |
406 | pcre_assign_jit_stack(p->pcre1_extra_info, NULL, p->pcre1_jit_stack); | |
407 | } else if (p->pcre1_jit_on != 0) { | |
408 | die("BUG: The pcre1_jit_on variable should be 0 or 1, not %d", | |
409 | p->pcre1_jit_on); | |
410 | } | |
411 | #endif | |
63e7e9d8 MK |
412 | } |
413 | ||
6d4b5747 | 414 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
415 | regmatch_t *match, int eflags) |
416 | { | |
417 | int ovector[30], ret, flags = 0; | |
418 | ||
419 | if (eflags & REG_NOTBOL) | |
420 | flags |= PCRE_NOTBOL; | |
421 | ||
e87de7ca | 422 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
423 | if (p->pcre1_jit_on) { |
424 | ret = pcre_jit_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
425 | eol - line, 0, flags, ovector, | |
426 | ARRAY_SIZE(ovector), p->pcre1_jit_stack); | |
427 | } else | |
428 | #endif | |
429 | { | |
430 | ret = pcre_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
431 | eol - line, 0, flags, ovector, | |
432 | ARRAY_SIZE(ovector)); | |
433 | } | |
434 | ||
63e7e9d8 MK |
435 | if (ret < 0 && ret != PCRE_ERROR_NOMATCH) |
436 | die("pcre_exec failed with error code %d", ret); | |
437 | if (ret > 0) { | |
438 | ret = 0; | |
439 | match->rm_so = ovector[0]; | |
440 | match->rm_eo = ovector[1]; | |
441 | } | |
442 | ||
443 | return ret; | |
444 | } | |
445 | ||
6d4b5747 | 446 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 | 447 | { |
6d4b5747 | 448 | pcre_free(p->pcre1_regexp); |
e87de7ca | 449 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
450 | if (p->pcre1_jit_on) { |
451 | pcre_free_study(p->pcre1_extra_info); | |
452 | pcre_jit_stack_free(p->pcre1_jit_stack); | |
453 | } else | |
454 | #endif | |
455 | { | |
456 | pcre_free(p->pcre1_extra_info); | |
457 | } | |
6d4b5747 | 458 | pcre_free((void *)p->pcre1_tables); |
63e7e9d8 | 459 | } |
3485bea1 | 460 | #else /* !USE_LIBPCRE1 */ |
6d4b5747 | 461 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
462 | { |
463 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
464 | } | |
465 | ||
6d4b5747 | 466 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
467 | regmatch_t *match, int eflags) |
468 | { | |
469 | return 1; | |
470 | } | |
471 | ||
6d4b5747 | 472 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 MK |
473 | { |
474 | } | |
3485bea1 | 475 | #endif /* !USE_LIBPCRE1 */ |
63e7e9d8 | 476 | |
94da9193 ÆAB |
477 | #ifdef USE_LIBPCRE2 |
478 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
479 | { | |
480 | int error; | |
481 | PCRE2_UCHAR errbuf[256]; | |
482 | PCRE2_SIZE erroffset; | |
483 | int options = PCRE2_MULTILINE; | |
484 | const uint8_t *character_tables = NULL; | |
485 | int jitret; | |
a25b9085 ÆAB |
486 | int patinforet; |
487 | size_t jitsizearg; | |
94da9193 ÆAB |
488 | |
489 | assert(opt->pcre2); | |
490 | ||
491 | p->pcre2_compile_context = NULL; | |
492 | ||
493 | if (opt->ignore_case) { | |
494 | if (has_non_ascii(p->pattern)) { | |
495 | character_tables = pcre2_maketables(NULL); | |
496 | p->pcre2_compile_context = pcre2_compile_context_create(NULL); | |
497 | pcre2_set_character_tables(p->pcre2_compile_context, character_tables); | |
498 | } | |
499 | options |= PCRE2_CASELESS; | |
500 | } | |
501 | if (is_utf8_locale() && has_non_ascii(p->pattern)) | |
502 | options |= PCRE2_UTF; | |
503 | ||
504 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
505 | p->patternlen, options, &error, &erroffset, | |
506 | p->pcre2_compile_context); | |
507 | ||
508 | if (p->pcre2_pattern) { | |
509 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL); | |
510 | if (!p->pcre2_match_data) | |
511 | die("Couldn't allocate PCRE2 match data"); | |
512 | } else { | |
513 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
514 | compile_regexp_failed(p, (const char *)&errbuf); | |
515 | } | |
516 | ||
517 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
518 | if (p->pcre2_jit_on == 1) { | |
519 | jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE); | |
520 | if (jitret) | |
521 | die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret); | |
a25b9085 ÆAB |
522 | |
523 | /* | |
524 | * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just | |
525 | * tells us whether the library itself supports JIT, | |
526 | * but to see whether we're going to be actually using | |
527 | * JIT we need to extract PCRE2_INFO_JITSIZE from the | |
528 | * pattern *after* we do pcre2_jit_compile() above. | |
529 | * | |
530 | * This is because if the pattern contains the | |
531 | * (*NO_JIT) verb (see pcre2syntax(3)) | |
532 | * pcre2_jit_compile() will exit early with 0. If we | |
533 | * then proceed to call pcre2_jit_match() further down | |
534 | * the line instead of pcre2_match() we'll either | |
535 | * segfault (pre PCRE 10.31) or run into a fatal error | |
536 | * (post PCRE2 10.31) | |
537 | */ | |
538 | patinforet = pcre2_pattern_info(p->pcre2_pattern, PCRE2_INFO_JITSIZE, &jitsizearg); | |
539 | if (patinforet) | |
540 | BUG("pcre2_pattern_info() failed: %d", patinforet); | |
541 | if (jitsizearg == 0) { | |
542 | p->pcre2_jit_on = 0; | |
543 | return; | |
544 | } | |
545 | ||
94da9193 ÆAB |
546 | p->pcre2_jit_stack = pcre2_jit_stack_create(1, 1024 * 1024, NULL); |
547 | if (!p->pcre2_jit_stack) | |
548 | die("Couldn't allocate PCRE2 JIT stack"); | |
549 | p->pcre2_match_context = pcre2_match_context_create(NULL); | |
674ad936 | 550 | if (!p->pcre2_match_context) |
94da9193 ÆAB |
551 | die("Couldn't allocate PCRE2 match context"); |
552 | pcre2_jit_stack_assign(p->pcre2_match_context, NULL, p->pcre2_jit_stack); | |
553 | } else if (p->pcre2_jit_on != 0) { | |
554 | die("BUG: The pcre2_jit_on variable should be 0 or 1, not %d", | |
555 | p->pcre1_jit_on); | |
556 | } | |
557 | } | |
558 | ||
559 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
560 | regmatch_t *match, int eflags) | |
561 | { | |
562 | int ret, flags = 0; | |
563 | PCRE2_SIZE *ovector; | |
564 | PCRE2_UCHAR errbuf[256]; | |
565 | ||
566 | if (eflags & REG_NOTBOL) | |
567 | flags |= PCRE2_NOTBOL; | |
568 | ||
569 | if (p->pcre2_jit_on) | |
570 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
571 | eol - line, 0, flags, p->pcre2_match_data, | |
572 | NULL); | |
573 | else | |
574 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
575 | eol - line, 0, flags, p->pcre2_match_data, | |
576 | NULL); | |
577 | ||
578 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
579 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
580 | die("%s failed with error code %d: %s", | |
581 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
582 | errbuf); | |
583 | } | |
584 | if (ret > 0) { | |
585 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
586 | ret = 0; | |
587 | match->rm_so = (int)ovector[0]; | |
588 | match->rm_eo = (int)ovector[1]; | |
589 | } | |
590 | ||
591 | return ret; | |
592 | } | |
593 | ||
594 | static void free_pcre2_pattern(struct grep_pat *p) | |
595 | { | |
596 | pcre2_compile_context_free(p->pcre2_compile_context); | |
597 | pcre2_code_free(p->pcre2_pattern); | |
598 | pcre2_match_data_free(p->pcre2_match_data); | |
599 | pcre2_jit_stack_free(p->pcre2_jit_stack); | |
600 | pcre2_match_context_free(p->pcre2_match_context); | |
601 | } | |
602 | #else /* !USE_LIBPCRE2 */ | |
603 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
604 | { | |
605 | /* | |
606 | * Unreachable until USE_LIBPCRE2 becomes synonymous with | |
607 | * USE_LIBPCRE. See the sibling comment in | |
608 | * grep_set_pattern_type_option(). | |
609 | */ | |
610 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
611 | } | |
612 | ||
613 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
614 | regmatch_t *match, int eflags) | |
615 | { | |
616 | return 1; | |
617 | } | |
618 | ||
619 | static void free_pcre2_pattern(struct grep_pat *p) | |
620 | { | |
621 | } | |
622 | #endif /* !USE_LIBPCRE2 */ | |
623 | ||
793dc676 NTND |
624 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
625 | { | |
626 | struct strbuf sb = STRBUF_INIT; | |
627 | int err; | |
1ceababc | 628 | int regflags = 0; |
793dc676 NTND |
629 | |
630 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
631 | if (opt->ignore_case) |
632 | regflags |= REG_ICASE; | |
633 | err = regcomp(&p->regexp, sb.buf, regflags); | |
634 | if (opt->debug) | |
635 | fprintf(stderr, "fixed %s\n", sb.buf); | |
636 | strbuf_release(&sb); | |
637 | if (err) { | |
638 | char errbuf[1024]; | |
639 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
640 | regfree(&p->regexp); | |
641 | compile_regexp_failed(p, errbuf); | |
642 | } | |
643 | } | |
644 | ||
83b5d2f5 JH |
645 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
646 | { | |
07a3d411 | 647 | int ascii_only; |
c822255c | 648 | int err; |
07a3d411 | 649 | int regflags = REG_NEWLINE; |
c822255c | 650 | |
d7eb527d | 651 | p->word_regexp = opt->word_regexp; |
5183bf67 | 652 | p->ignore_case = opt->ignore_case; |
5c1ebcca | 653 | ascii_only = !has_non_ascii(p->pattern); |
d7eb527d | 654 | |
793dc676 NTND |
655 | /* |
656 | * Even when -F (fixed) asks us to do a non-regexp search, we | |
657 | * may not be able to correctly case-fold when -i | |
658 | * (ignore-case) is asked (in which case, we'll synthesize a | |
659 | * regexp to match the pattern that matches regexp special | |
660 | * characters literally, while ignoring case differences). On | |
661 | * the other hand, even without -F, if the pattern does not | |
662 | * have any regexp special characters and there is no need for | |
663 | * case-folding search, we can internally turn it into a | |
664 | * simple string match using kws. p->fixed tells us if we | |
665 | * want to use kws. | |
666 | */ | |
219e65b6 ÆAB |
667 | if (opt->fixed || |
668 | has_null(p->pattern, p->patternlen) || | |
669 | is_fixed(p->pattern, p->patternlen)) | |
07a3d411 | 670 | p->fixed = !p->ignore_case || ascii_only; |
9eceddee FK |
671 | |
672 | if (p->fixed) { | |
07a3d411 | 673 | p->kws = kwsalloc(p->ignore_case ? tolower_trans_tbl : NULL); |
9eceddee FK |
674 | kwsincr(p->kws, p->pattern, p->patternlen); |
675 | kwsprep(p->kws); | |
c822255c | 676 | return; |
793dc676 NTND |
677 | } else if (opt->fixed) { |
678 | /* | |
679 | * We come here when the pattern has the non-ascii | |
680 | * characters we cannot case-fold, and asked to | |
681 | * ignore-case. | |
682 | */ | |
683 | compile_fixed_regexp(p, opt); | |
684 | return; | |
9eceddee | 685 | } |
c822255c | 686 | |
94da9193 ÆAB |
687 | if (opt->pcre2) { |
688 | compile_pcre2_pattern(p, opt); | |
689 | return; | |
690 | } | |
691 | ||
6d4b5747 ÆAB |
692 | if (opt->pcre1) { |
693 | compile_pcre1_regexp(p, opt); | |
63e7e9d8 MK |
694 | return; |
695 | } | |
696 | ||
07a3d411 ÆAB |
697 | if (p->ignore_case) |
698 | regflags |= REG_ICASE; | |
699 | if (opt->extended_regexp_option) | |
700 | regflags |= REG_EXTENDED; | |
701 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
702 | if (err) { |
703 | char errbuf[1024]; | |
83b5d2f5 JH |
704 | regerror(err, &p->regexp, errbuf, 1024); |
705 | regfree(&p->regexp); | |
a30c148a | 706 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
707 | } |
708 | } | |
709 | ||
0ab7befa | 710 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
711 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
712 | { | |
713 | struct grep_pat *p; | |
714 | struct grep_expr *x; | |
715 | ||
716 | p = *list; | |
c922b01f LT |
717 | if (!p) |
718 | return NULL; | |
83b5d2f5 JH |
719 | switch (p->token) { |
720 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
721 | case GREP_PATTERN_HEAD: |
722 | case GREP_PATTERN_BODY: | |
83b5d2f5 JH |
723 | x = xcalloc(1, sizeof (struct grep_expr)); |
724 | x->node = GREP_NODE_ATOM; | |
725 | x->u.atom = p; | |
726 | *list = p->next; | |
727 | return x; | |
728 | case GREP_OPEN_PAREN: | |
729 | *list = p->next; | |
0ab7befa | 730 | x = compile_pattern_or(list); |
83b5d2f5 JH |
731 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
732 | die("unmatched parenthesis"); | |
733 | *list = (*list)->next; | |
734 | return x; | |
735 | default: | |
736 | return NULL; | |
737 | } | |
738 | } | |
739 | ||
740 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
741 | { | |
742 | struct grep_pat *p; | |
743 | struct grep_expr *x; | |
744 | ||
745 | p = *list; | |
c922b01f LT |
746 | if (!p) |
747 | return NULL; | |
83b5d2f5 JH |
748 | switch (p->token) { |
749 | case GREP_NOT: | |
750 | if (!p->next) | |
751 | die("--not not followed by pattern expression"); | |
752 | *list = p->next; | |
753 | x = xcalloc(1, sizeof (struct grep_expr)); | |
754 | x->node = GREP_NODE_NOT; | |
755 | x->u.unary = compile_pattern_not(list); | |
756 | if (!x->u.unary) | |
757 | die("--not followed by non pattern expression"); | |
758 | return x; | |
759 | default: | |
760 | return compile_pattern_atom(list); | |
761 | } | |
762 | } | |
763 | ||
764 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
765 | { | |
766 | struct grep_pat *p; | |
767 | struct grep_expr *x, *y, *z; | |
768 | ||
769 | x = compile_pattern_not(list); | |
770 | p = *list; | |
771 | if (p && p->token == GREP_AND) { | |
772 | if (!p->next) | |
773 | die("--and not followed by pattern expression"); | |
774 | *list = p->next; | |
775 | y = compile_pattern_and(list); | |
776 | if (!y) | |
777 | die("--and not followed by pattern expression"); | |
778 | z = xcalloc(1, sizeof (struct grep_expr)); | |
779 | z->node = GREP_NODE_AND; | |
780 | z->u.binary.left = x; | |
781 | z->u.binary.right = y; | |
782 | return z; | |
783 | } | |
784 | return x; | |
785 | } | |
786 | ||
787 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
788 | { | |
789 | struct grep_pat *p; | |
790 | struct grep_expr *x, *y, *z; | |
791 | ||
792 | x = compile_pattern_and(list); | |
793 | p = *list; | |
794 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
795 | y = compile_pattern_or(list); | |
796 | if (!y) | |
797 | die("not a pattern expression %s", p->pattern); | |
798 | z = xcalloc(1, sizeof (struct grep_expr)); | |
799 | z->node = GREP_NODE_OR; | |
800 | z->u.binary.left = x; | |
801 | z->u.binary.right = y; | |
802 | return z; | |
803 | } | |
804 | return x; | |
805 | } | |
806 | ||
807 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
808 | { | |
809 | return compile_pattern_or(list); | |
810 | } | |
811 | ||
17bf35a3 JH |
812 | static void indent(int in) |
813 | { | |
814 | while (in-- > 0) | |
815 | fputc(' ', stderr); | |
816 | } | |
817 | ||
818 | static void dump_grep_pat(struct grep_pat *p) | |
819 | { | |
820 | switch (p->token) { | |
821 | case GREP_AND: fprintf(stderr, "*and*"); break; | |
822 | case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; | |
823 | case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; | |
824 | case GREP_NOT: fprintf(stderr, "*not*"); break; | |
825 | case GREP_OR: fprintf(stderr, "*or*"); break; | |
826 | ||
827 | case GREP_PATTERN: fprintf(stderr, "pattern"); break; | |
828 | case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; | |
829 | case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; | |
830 | } | |
831 | ||
832 | switch (p->token) { | |
833 | default: break; | |
834 | case GREP_PATTERN_HEAD: | |
835 | fprintf(stderr, "<head %d>", p->field); break; | |
836 | case GREP_PATTERN_BODY: | |
837 | fprintf(stderr, "<body>"); break; | |
838 | } | |
839 | switch (p->token) { | |
840 | default: break; | |
841 | case GREP_PATTERN_HEAD: | |
842 | case GREP_PATTERN_BODY: | |
843 | case GREP_PATTERN: | |
844 | fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); | |
845 | break; | |
846 | } | |
847 | fputc('\n', stderr); | |
848 | } | |
849 | ||
850 | static void dump_grep_expression_1(struct grep_expr *x, int in) | |
851 | { | |
852 | indent(in); | |
853 | switch (x->node) { | |
854 | case GREP_NODE_TRUE: | |
855 | fprintf(stderr, "true\n"); | |
856 | break; | |
857 | case GREP_NODE_ATOM: | |
858 | dump_grep_pat(x->u.atom); | |
859 | break; | |
860 | case GREP_NODE_NOT: | |
861 | fprintf(stderr, "(not\n"); | |
862 | dump_grep_expression_1(x->u.unary, in+1); | |
863 | indent(in); | |
864 | fprintf(stderr, ")\n"); | |
865 | break; | |
866 | case GREP_NODE_AND: | |
867 | fprintf(stderr, "(and\n"); | |
868 | dump_grep_expression_1(x->u.binary.left, in+1); | |
869 | dump_grep_expression_1(x->u.binary.right, in+1); | |
870 | indent(in); | |
871 | fprintf(stderr, ")\n"); | |
872 | break; | |
873 | case GREP_NODE_OR: | |
874 | fprintf(stderr, "(or\n"); | |
875 | dump_grep_expression_1(x->u.binary.left, in+1); | |
876 | dump_grep_expression_1(x->u.binary.right, in+1); | |
877 | indent(in); | |
878 | fprintf(stderr, ")\n"); | |
879 | break; | |
880 | } | |
881 | } | |
882 | ||
07a7d656 | 883 | static void dump_grep_expression(struct grep_opt *opt) |
17bf35a3 JH |
884 | { |
885 | struct grep_expr *x = opt->pattern_expression; | |
886 | ||
887 | if (opt->all_match) | |
888 | fprintf(stderr, "[all-match]\n"); | |
889 | dump_grep_expression_1(x, 0); | |
890 | fflush(NULL); | |
891 | } | |
892 | ||
5aaeb733 JH |
893 | static struct grep_expr *grep_true_expr(void) |
894 | { | |
895 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
896 | z->node = GREP_NODE_TRUE; | |
897 | return z; | |
898 | } | |
899 | ||
900 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) | |
901 | { | |
902 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
903 | z->node = GREP_NODE_OR; | |
904 | z->u.binary.left = left; | |
905 | z->u.binary.right = right; | |
906 | return z; | |
907 | } | |
908 | ||
95ce9ce2 | 909 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
910 | { |
911 | struct grep_pat *p; | |
95ce9ce2 | 912 | struct grep_expr *header_expr; |
5aaeb733 JH |
913 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
914 | enum grep_header_field fld; | |
83b5d2f5 | 915 | |
95ce9ce2 JH |
916 | if (!opt->header_list) |
917 | return NULL; | |
2385f246 | 918 | |
95ce9ce2 JH |
919 | for (p = opt->header_list; p; p = p->next) { |
920 | if (p->token != GREP_PATTERN_HEAD) | |
ef1177d1 | 921 | die("BUG: a non-header pattern in grep header list."); |
3ce3ffb8 AP |
922 | if (p->field < GREP_HEADER_FIELD_MIN || |
923 | GREP_HEADER_FIELD_MAX <= p->field) | |
ef1177d1 | 924 | die("BUG: unknown header field %d", p->field); |
95ce9ce2 | 925 | compile_regexp(p, opt); |
80235ba7 | 926 | } |
5aaeb733 JH |
927 | |
928 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
929 | header_group[fld] = NULL; | |
930 | ||
931 | for (p = opt->header_list; p; p = p->next) { | |
932 | struct grep_expr *h; | |
933 | struct grep_pat *pp = p; | |
934 | ||
935 | h = compile_pattern_atom(&pp); | |
936 | if (!h || pp != p->next) | |
ef1177d1 | 937 | die("BUG: malformed header expr"); |
5aaeb733 JH |
938 | if (!header_group[p->field]) { |
939 | header_group[p->field] = h; | |
940 | continue; | |
941 | } | |
942 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
943 | } | |
944 | ||
945 | header_expr = NULL; | |
946 | ||
947 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
948 | if (!header_group[fld]) | |
949 | continue; | |
950 | if (!header_expr) | |
951 | header_expr = grep_true_expr(); | |
952 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
953 | } | |
95ce9ce2 JH |
954 | return header_expr; |
955 | } | |
956 | ||
13e4fc7e JH |
957 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
958 | { | |
959 | struct grep_expr *z = x; | |
960 | ||
961 | while (x) { | |
962 | assert(x->node == GREP_NODE_OR); | |
963 | if (x->u.binary.right && | |
964 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
965 | x->u.binary.right = y; | |
966 | break; | |
967 | } | |
968 | x = x->u.binary.right; | |
969 | } | |
970 | return z; | |
971 | } | |
972 | ||
17bf35a3 | 973 | static void compile_grep_patterns_real(struct grep_opt *opt) |
95ce9ce2 JH |
974 | { |
975 | struct grep_pat *p; | |
976 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 977 | |
83b5d2f5 | 978 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
979 | switch (p->token) { |
980 | case GREP_PATTERN: /* atom */ | |
981 | case GREP_PATTERN_HEAD: | |
982 | case GREP_PATTERN_BODY: | |
c822255c | 983 | compile_regexp(p, opt); |
480c1ca6 JH |
984 | break; |
985 | default: | |
83b5d2f5 | 986 | opt->extended = 1; |
480c1ca6 JH |
987 | break; |
988 | } | |
83b5d2f5 JH |
989 | } |
990 | ||
80235ba7 JH |
991 | if (opt->all_match || header_expr) |
992 | opt->extended = 1; | |
17bf35a3 | 993 | else if (!opt->extended && !opt->debug) |
83b5d2f5 JH |
994 | return; |
995 | ||
83b5d2f5 | 996 | p = opt->pattern_list; |
ba150a3f MB |
997 | if (p) |
998 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
999 | if (p) |
1000 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 JH |
1001 | |
1002 | if (!header_expr) | |
1003 | return; | |
1004 | ||
5aaeb733 | 1005 | if (!opt->pattern_expression) |
80235ba7 | 1006 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
1007 | else if (opt->all_match) |
1008 | opt->pattern_expression = grep_splice_or(header_expr, | |
1009 | opt->pattern_expression); | |
5aaeb733 JH |
1010 | else |
1011 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
1012 | header_expr); | |
80235ba7 | 1013 | opt->all_match = 1; |
83b5d2f5 JH |
1014 | } |
1015 | ||
17bf35a3 JH |
1016 | void compile_grep_patterns(struct grep_opt *opt) |
1017 | { | |
1018 | compile_grep_patterns_real(opt); | |
1019 | if (opt->debug) | |
1020 | dump_grep_expression(opt); | |
1021 | } | |
1022 | ||
b48fb5b6 JH |
1023 | static void free_pattern_expr(struct grep_expr *x) |
1024 | { | |
1025 | switch (x->node) { | |
5aaeb733 | 1026 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
1027 | case GREP_NODE_ATOM: |
1028 | break; | |
1029 | case GREP_NODE_NOT: | |
1030 | free_pattern_expr(x->u.unary); | |
1031 | break; | |
1032 | case GREP_NODE_AND: | |
1033 | case GREP_NODE_OR: | |
1034 | free_pattern_expr(x->u.binary.left); | |
1035 | free_pattern_expr(x->u.binary.right); | |
1036 | break; | |
1037 | } | |
1038 | free(x); | |
1039 | } | |
1040 | ||
1041 | void free_grep_patterns(struct grep_opt *opt) | |
1042 | { | |
1043 | struct grep_pat *p, *n; | |
1044 | ||
1045 | for (p = opt->pattern_list; p; p = n) { | |
1046 | n = p->next; | |
1047 | switch (p->token) { | |
1048 | case GREP_PATTERN: /* atom */ | |
1049 | case GREP_PATTERN_HEAD: | |
1050 | case GREP_PATTERN_BODY: | |
9eceddee FK |
1051 | if (p->kws) |
1052 | kwsfree(p->kws); | |
6d4b5747 ÆAB |
1053 | else if (p->pcre1_regexp) |
1054 | free_pcre1_regexp(p); | |
94da9193 ÆAB |
1055 | else if (p->pcre2_pattern) |
1056 | free_pcre2_pattern(p); | |
63e7e9d8 MK |
1057 | else |
1058 | regfree(&p->regexp); | |
526a858a | 1059 | free(p->pattern); |
b48fb5b6 JH |
1060 | break; |
1061 | default: | |
1062 | break; | |
1063 | } | |
1064 | free(p); | |
1065 | } | |
1066 | ||
1067 | if (!opt->extended) | |
1068 | return; | |
1069 | free_pattern_expr(opt->pattern_expression); | |
1070 | } | |
1071 | ||
83b5d2f5 JH |
1072 | static char *end_of_line(char *cp, unsigned long *left) |
1073 | { | |
1074 | unsigned long l = *left; | |
1075 | while (l && *cp != '\n') { | |
1076 | l--; | |
1077 | cp++; | |
1078 | } | |
1079 | *left = l; | |
1080 | return cp; | |
1081 | } | |
1082 | ||
1083 | static int word_char(char ch) | |
1084 | { | |
1085 | return isalnum(ch) || ch == '_'; | |
1086 | } | |
1087 | ||
55f638bd ML |
1088 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
1089 | const char *color) | |
1090 | { | |
daa0c3d9 | 1091 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
1092 | opt->output(opt, color, strlen(color)); |
1093 | opt->output(opt, data, size); | |
1094 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
1095 | } else | |
1096 | opt->output(opt, data, size); | |
1097 | } | |
1098 | ||
1099 | static void output_sep(struct grep_opt *opt, char sign) | |
1100 | { | |
1101 | if (opt->null_following_name) | |
1102 | opt->output(opt, "\0", 1); | |
1103 | else | |
1104 | output_color(opt, &sign, 1, opt->color_sep); | |
1105 | } | |
1106 | ||
83caecca RZ |
1107 | static void show_name(struct grep_opt *opt, const char *name) |
1108 | { | |
55f638bd | 1109 | output_color(opt, name, strlen(name), opt->color_filename); |
5b594f45 | 1110 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
1111 | } |
1112 | ||
ed40a095 RS |
1113 | static int fixmatch(struct grep_pat *p, char *line, char *eol, |
1114 | regmatch_t *match) | |
83b5d2f5 | 1115 | { |
9eceddee FK |
1116 | struct kwsmatch kwsm; |
1117 | size_t offset = kwsexec(p->kws, line, eol - line, &kwsm); | |
1118 | if (offset == -1) { | |
83b5d2f5 JH |
1119 | match->rm_so = match->rm_eo = -1; |
1120 | return REG_NOMATCH; | |
9eceddee FK |
1121 | } else { |
1122 | match->rm_so = offset; | |
1123 | match->rm_eo = match->rm_so + kwsm.size[0]; | |
83b5d2f5 JH |
1124 | return 0; |
1125 | } | |
1126 | } | |
1127 | ||
97e77784 MK |
1128 | static int patmatch(struct grep_pat *p, char *line, char *eol, |
1129 | regmatch_t *match, int eflags) | |
1130 | { | |
1131 | int hit; | |
1132 | ||
1133 | if (p->fixed) | |
1134 | hit = !fixmatch(p, line, eol, match); | |
6d4b5747 ÆAB |
1135 | else if (p->pcre1_regexp) |
1136 | hit = !pcre1match(p, line, eol, match, eflags); | |
94da9193 ÆAB |
1137 | else if (p->pcre2_pattern) |
1138 | hit = !pcre2match(p, line, eol, match, eflags); | |
97e77784 | 1139 | else |
b7d36ffc JS |
1140 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
1141 | eflags); | |
97e77784 MK |
1142 | |
1143 | return hit; | |
1144 | } | |
1145 | ||
a4d7d2c6 JH |
1146 | static int strip_timestamp(char *bol, char **eol_p) |
1147 | { | |
1148 | char *eol = *eol_p; | |
1149 | int ch; | |
1150 | ||
1151 | while (bol < --eol) { | |
1152 | if (*eol != '>') | |
1153 | continue; | |
1154 | *eol_p = ++eol; | |
1155 | ch = *eol; | |
1156 | *eol = '\0'; | |
1157 | return ch; | |
1158 | } | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | static struct { | |
1163 | const char *field; | |
1164 | size_t len; | |
1165 | } header_field[] = { | |
1166 | { "author ", 7 }, | |
1167 | { "committer ", 10 }, | |
72fd13f7 | 1168 | { "reflog ", 7 }, |
a4d7d2c6 JH |
1169 | }; |
1170 | ||
d7eb527d | 1171 | static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, |
79212772 RS |
1172 | enum grep_context ctx, |
1173 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
1174 | { |
1175 | int hit = 0; | |
a4d7d2c6 | 1176 | int saved_ch = 0; |
e701fadb | 1177 | const char *start = bol; |
83b5d2f5 | 1178 | |
480c1ca6 JH |
1179 | if ((p->token != GREP_PATTERN) && |
1180 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
1181 | return 0; | |
1182 | ||
a4d7d2c6 JH |
1183 | if (p->token == GREP_PATTERN_HEAD) { |
1184 | const char *field; | |
1185 | size_t len; | |
1186 | assert(p->field < ARRAY_SIZE(header_field)); | |
1187 | field = header_field[p->field].field; | |
1188 | len = header_field[p->field].len; | |
1189 | if (strncmp(bol, field, len)) | |
1190 | return 0; | |
1191 | bol += len; | |
ad4813b3 NTND |
1192 | switch (p->field) { |
1193 | case GREP_HEADER_AUTHOR: | |
1194 | case GREP_HEADER_COMMITTER: | |
1195 | saved_ch = strip_timestamp(bol, &eol); | |
1196 | break; | |
1197 | default: | |
1198 | break; | |
1199 | } | |
a4d7d2c6 JH |
1200 | } |
1201 | ||
83b5d2f5 | 1202 | again: |
97e77784 | 1203 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 1204 | |
d7eb527d | 1205 | if (hit && p->word_regexp) { |
83b5d2f5 | 1206 | if ((pmatch[0].rm_so < 0) || |
84201eae | 1207 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
1208 | (pmatch[0].rm_eo < 0) || |
1209 | (eol - bol) < pmatch[0].rm_eo) | |
1210 | die("regexp returned nonsense"); | |
1211 | ||
1212 | /* Match beginning must be either beginning of the | |
1213 | * line, or at word boundary (i.e. the last char must | |
1214 | * not be a word char). Similarly, match end must be | |
1215 | * either end of the line, or at word boundary | |
1216 | * (i.e. the next char must not be a word char). | |
1217 | */ | |
fb62eb7f | 1218 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
1219 | !word_char(bol[pmatch[0].rm_so-1])) && |
1220 | ((pmatch[0].rm_eo == (eol-bol)) || | |
1221 | !word_char(bol[pmatch[0].rm_eo])) ) | |
1222 | ; | |
1223 | else | |
1224 | hit = 0; | |
1225 | ||
84201eae RS |
1226 | /* Words consist of at least one character. */ |
1227 | if (pmatch->rm_so == pmatch->rm_eo) | |
1228 | hit = 0; | |
1229 | ||
83b5d2f5 JH |
1230 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
1231 | /* There could be more than one match on the | |
1232 | * line, and the first match might not be | |
1233 | * strict word match. But later ones could be! | |
fb62eb7f RS |
1234 | * Forward to the next possible start, i.e. the |
1235 | * next position following a non-word char. | |
83b5d2f5 JH |
1236 | */ |
1237 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
1238 | while (word_char(bol[-1]) && bol < eol) |
1239 | bol++; | |
dbb6a4ad | 1240 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
1241 | if (bol < eol) |
1242 | goto again; | |
83b5d2f5 JH |
1243 | } |
1244 | } | |
a4d7d2c6 JH |
1245 | if (p->token == GREP_PATTERN_HEAD && saved_ch) |
1246 | *eol = saved_ch; | |
e701fadb RS |
1247 | if (hit) { |
1248 | pmatch[0].rm_so += bol - start; | |
1249 | pmatch[0].rm_eo += bol - start; | |
1250 | } | |
83b5d2f5 JH |
1251 | return hit; |
1252 | } | |
1253 | ||
d7eb527d RS |
1254 | static int match_expr_eval(struct grep_expr *x, char *bol, char *eol, |
1255 | enum grep_context ctx, int collect_hits) | |
83b5d2f5 | 1256 | { |
0ab7befa | 1257 | int h = 0; |
79212772 | 1258 | regmatch_t match; |
0ab7befa | 1259 | |
c922b01f LT |
1260 | if (!x) |
1261 | die("Not a valid grep expression"); | |
83b5d2f5 | 1262 | switch (x->node) { |
5aaeb733 JH |
1263 | case GREP_NODE_TRUE: |
1264 | h = 1; | |
1265 | break; | |
83b5d2f5 | 1266 | case GREP_NODE_ATOM: |
79212772 | 1267 | h = match_one_pattern(x->u.atom, bol, eol, ctx, &match, 0); |
83b5d2f5 JH |
1268 | break; |
1269 | case GREP_NODE_NOT: | |
d7eb527d | 1270 | h = !match_expr_eval(x->u.unary, bol, eol, ctx, 0); |
0ab7befa | 1271 | break; |
83b5d2f5 | 1272 | case GREP_NODE_AND: |
d7eb527d | 1273 | if (!match_expr_eval(x->u.binary.left, bol, eol, ctx, 0)) |
252d560d | 1274 | return 0; |
d7eb527d | 1275 | h = match_expr_eval(x->u.binary.right, bol, eol, ctx, 0); |
0ab7befa | 1276 | break; |
83b5d2f5 | 1277 | case GREP_NODE_OR: |
0ab7befa | 1278 | if (!collect_hits) |
d7eb527d | 1279 | return (match_expr_eval(x->u.binary.left, |
0ab7befa | 1280 | bol, eol, ctx, 0) || |
d7eb527d | 1281 | match_expr_eval(x->u.binary.right, |
0ab7befa | 1282 | bol, eol, ctx, 0)); |
d7eb527d | 1283 | h = match_expr_eval(x->u.binary.left, bol, eol, ctx, 0); |
0ab7befa | 1284 | x->u.binary.left->hit |= h; |
d7eb527d | 1285 | h |= match_expr_eval(x->u.binary.right, bol, eol, ctx, 1); |
0ab7befa JH |
1286 | break; |
1287 | default: | |
d7530708 | 1288 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1289 | } |
0ab7befa JH |
1290 | if (collect_hits) |
1291 | x->hit |= h; | |
1292 | return h; | |
83b5d2f5 JH |
1293 | } |
1294 | ||
480c1ca6 | 1295 | static int match_expr(struct grep_opt *opt, char *bol, char *eol, |
0ab7befa | 1296 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1297 | { |
1298 | struct grep_expr *x = opt->pattern_expression; | |
d7eb527d | 1299 | return match_expr_eval(x, bol, eol, ctx, collect_hits); |
83b5d2f5 JH |
1300 | } |
1301 | ||
480c1ca6 | 1302 | static int match_line(struct grep_opt *opt, char *bol, char *eol, |
0ab7befa | 1303 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1304 | { |
1305 | struct grep_pat *p; | |
79212772 RS |
1306 | regmatch_t match; |
1307 | ||
83b5d2f5 | 1308 | if (opt->extended) |
0ab7befa JH |
1309 | return match_expr(opt, bol, eol, ctx, collect_hits); |
1310 | ||
1311 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1312 | for (p = opt->pattern_list; p; p = p->next) { |
79212772 | 1313 | if (match_one_pattern(p, bol, eol, ctx, &match, 0)) |
83b5d2f5 JH |
1314 | return 1; |
1315 | } | |
1316 | return 0; | |
1317 | } | |
1318 | ||
7e8f59d5 RS |
1319 | static int match_next_pattern(struct grep_pat *p, char *bol, char *eol, |
1320 | enum grep_context ctx, | |
1321 | regmatch_t *pmatch, int eflags) | |
1322 | { | |
1323 | regmatch_t match; | |
1324 | ||
1325 | if (!match_one_pattern(p, bol, eol, ctx, &match, eflags)) | |
1326 | return 0; | |
1327 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1328 | return 0; | |
1329 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1330 | if (match.rm_so > pmatch->rm_so) | |
1331 | return 1; | |
1332 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1333 | return 1; | |
1334 | } | |
1335 | pmatch->rm_so = match.rm_so; | |
1336 | pmatch->rm_eo = match.rm_eo; | |
1337 | return 1; | |
1338 | } | |
1339 | ||
1340 | static int next_match(struct grep_opt *opt, char *bol, char *eol, | |
1341 | enum grep_context ctx, regmatch_t *pmatch, int eflags) | |
1342 | { | |
1343 | struct grep_pat *p; | |
1344 | int hit = 0; | |
1345 | ||
1346 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1347 | if (bol < eol) { | |
1348 | for (p = opt->pattern_list; p; p = p->next) { | |
1349 | switch (p->token) { | |
1350 | case GREP_PATTERN: /* atom */ | |
1351 | case GREP_PATTERN_HEAD: | |
1352 | case GREP_PATTERN_BODY: | |
1353 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1354 | pmatch, eflags); | |
1355 | break; | |
1356 | default: | |
1357 | break; | |
1358 | } | |
1359 | } | |
1360 | } | |
1361 | return hit; | |
1362 | } | |
1363 | ||
1364 | static void show_line(struct grep_opt *opt, char *bol, char *eol, | |
1365 | const char *name, unsigned lno, char sign) | |
1366 | { | |
1367 | int rest = eol - bol; | |
79a77109 | 1368 | const char *match_color, *line_color = NULL; |
7e8f59d5 | 1369 | |
a8f0e764 RS |
1370 | if (opt->file_break && opt->last_shown == 0) { |
1371 | if (opt->show_hunk_mark) | |
1372 | opt->output(opt, "\n", 1); | |
ba8ea749 | 1373 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { |
046802d0 | 1374 | if (opt->last_shown == 0) { |
55f638bd ML |
1375 | if (opt->show_hunk_mark) { |
1376 | output_color(opt, "--", 2, opt->color_sep); | |
1377 | opt->output(opt, "\n", 1); | |
07b838f0 | 1378 | } |
55f638bd ML |
1379 | } else if (lno > opt->last_shown + 1) { |
1380 | output_color(opt, "--", 2, opt->color_sep); | |
1381 | opt->output(opt, "\n", 1); | |
1382 | } | |
5dd06d38 | 1383 | } |
1d84f72e RS |
1384 | if (opt->heading && opt->last_shown == 0) { |
1385 | output_color(opt, name, strlen(name), opt->color_filename); | |
1386 | opt->output(opt, "\n", 1); | |
1387 | } | |
5dd06d38 RS |
1388 | opt->last_shown = lno; |
1389 | ||
1d84f72e | 1390 | if (!opt->heading && opt->pathname) { |
55f638bd ML |
1391 | output_color(opt, name, strlen(name), opt->color_filename); |
1392 | output_sep(opt, sign); | |
5b594f45 FK |
1393 | } |
1394 | if (opt->linenum) { | |
1395 | char buf[32]; | |
1a168e5c | 1396 | xsnprintf(buf, sizeof(buf), "%d", lno); |
55f638bd ML |
1397 | output_color(opt, buf, strlen(buf), opt->color_lineno); |
1398 | output_sep(opt, sign); | |
5b594f45 | 1399 | } |
7e8f59d5 RS |
1400 | if (opt->color) { |
1401 | regmatch_t match; | |
1402 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
1403 | int ch = *eol; | |
1404 | int eflags = 0; | |
1405 | ||
79a77109 RS |
1406 | if (sign == ':') |
1407 | match_color = opt->color_match_selected; | |
1408 | else | |
1409 | match_color = opt->color_match_context; | |
00588bb5 ML |
1410 | if (sign == ':') |
1411 | line_color = opt->color_selected; | |
1412 | else if (sign == '-') | |
1413 | line_color = opt->color_context; | |
1414 | else if (sign == '=') | |
1415 | line_color = opt->color_function; | |
7e8f59d5 RS |
1416 | *eol = '\0'; |
1417 | while (next_match(opt, bol, eol, ctx, &match, eflags)) { | |
1f5b9cc4 RS |
1418 | if (match.rm_so == match.rm_eo) |
1419 | break; | |
5b594f45 | 1420 | |
00588bb5 | 1421 | output_color(opt, bol, match.rm_so, line_color); |
55f638bd | 1422 | output_color(opt, bol + match.rm_so, |
79a77109 | 1423 | match.rm_eo - match.rm_so, match_color); |
7e8f59d5 RS |
1424 | bol += match.rm_eo; |
1425 | rest -= match.rm_eo; | |
1426 | eflags = REG_NOTBOL; | |
1427 | } | |
1428 | *eol = ch; | |
1429 | } | |
00588bb5 | 1430 | output_color(opt, bol, rest, line_color); |
5b594f45 | 1431 | opt->output(opt, "\n", 1); |
7e8f59d5 RS |
1432 | } |
1433 | ||
0579f91d | 1434 | #ifndef NO_PTHREADS |
78db6ea9 JK |
1435 | int grep_use_locks; |
1436 | ||
0579f91d TR |
1437 | /* |
1438 | * This lock protects access to the gitattributes machinery, which is | |
1439 | * not thread-safe. | |
1440 | */ | |
1441 | pthread_mutex_t grep_attr_mutex; | |
1442 | ||
78db6ea9 | 1443 | static inline void grep_attr_lock(void) |
0579f91d | 1444 | { |
78db6ea9 | 1445 | if (grep_use_locks) |
0579f91d TR |
1446 | pthread_mutex_lock(&grep_attr_mutex); |
1447 | } | |
1448 | ||
78db6ea9 | 1449 | static inline void grep_attr_unlock(void) |
0579f91d | 1450 | { |
78db6ea9 | 1451 | if (grep_use_locks) |
0579f91d TR |
1452 | pthread_mutex_unlock(&grep_attr_mutex); |
1453 | } | |
b3aeb285 JK |
1454 | |
1455 | /* | |
1456 | * Same as git_attr_mutex, but protecting the thread-unsafe object db access. | |
1457 | */ | |
1458 | pthread_mutex_t grep_read_mutex; | |
1459 | ||
0579f91d | 1460 | #else |
78db6ea9 JK |
1461 | #define grep_attr_lock() |
1462 | #define grep_attr_unlock() | |
0579f91d TR |
1463 | #endif |
1464 | ||
e1327023 | 1465 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, char *bol, char *eol) |
2944e4e6 | 1466 | { |
60ecac98 | 1467 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1468 | if (xecfg && !xecfg->find_func) { |
94ad9d9e JK |
1469 | grep_source_load_driver(gs); |
1470 | if (gs->driver->funcname.pattern) { | |
1471 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1472 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1473 | } else { | |
1474 | xecfg = opt->priv = NULL; | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | if (xecfg) { | |
60ecac98 RS |
1479 | char buf[1]; |
1480 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1481 | xecfg->find_func_priv) >= 0; | |
1482 | } | |
1483 | ||
2944e4e6 RS |
1484 | if (bol == eol) |
1485 | return 0; | |
1486 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1487 | return 1; | |
1488 | return 0; | |
1489 | } | |
1490 | ||
e1327023 JK |
1491 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1492 | char *bol, unsigned lno) | |
2944e4e6 | 1493 | { |
e1327023 | 1494 | while (bol > gs->buf) { |
2944e4e6 RS |
1495 | char *eol = --bol; |
1496 | ||
e1327023 | 1497 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1498 | bol--; |
1499 | lno--; | |
1500 | ||
1501 | if (lno <= opt->last_shown) | |
1502 | break; | |
1503 | ||
e1327023 JK |
1504 | if (match_funcname(opt, gs, bol, eol)) { |
1505 | show_line(opt, bol, eol, gs->name, lno, '='); | |
2944e4e6 RS |
1506 | break; |
1507 | } | |
1508 | } | |
1509 | } | |
1510 | ||
a5dc20b0 RS |
1511 | static int is_empty_line(const char *bol, const char *eol); |
1512 | ||
e1327023 | 1513 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
ba8ea749 | 1514 | char *bol, char *end, unsigned lno) |
49de3216 | 1515 | { |
6653a01b | 1516 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1517 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1518 | |
49de3216 RS |
1519 | if (opt->pre_context < lno) |
1520 | from = lno - opt->pre_context; | |
1521 | if (from <= opt->last_shown) | |
1522 | from = opt->last_shown + 1; | |
6653a01b | 1523 | orig_from = from; |
a5dc20b0 RS |
1524 | if (opt->funcbody) { |
1525 | if (match_funcname(opt, gs, bol, end)) | |
1526 | comment_needed = 1; | |
1527 | else | |
1528 | funcname_needed = 1; | |
6653a01b RS |
1529 | from = opt->last_shown + 1; |
1530 | } | |
49de3216 RS |
1531 | |
1532 | /* Rewind. */ | |
6653a01b | 1533 | while (bol > gs->buf && cur > from) { |
a5dc20b0 | 1534 | char *next_bol = bol; |
2944e4e6 RS |
1535 | char *eol = --bol; |
1536 | ||
e1327023 | 1537 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1538 | bol--; |
1539 | cur--; | |
a5dc20b0 RS |
1540 | if (comment_needed && (is_empty_line(bol, eol) || |
1541 | match_funcname(opt, gs, bol, eol))) { | |
1542 | comment_needed = 0; | |
1543 | from = orig_from; | |
1544 | if (cur < from) { | |
1545 | cur++; | |
1546 | bol = next_bol; | |
1547 | break; | |
1548 | } | |
1549 | } | |
e1327023 | 1550 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1551 | funcname_lno = cur; |
1552 | funcname_needed = 0; | |
a5dc20b0 RS |
1553 | if (opt->funcbody) |
1554 | comment_needed = 1; | |
1555 | else | |
1556 | from = orig_from; | |
2944e4e6 | 1557 | } |
49de3216 RS |
1558 | } |
1559 | ||
2944e4e6 RS |
1560 | /* We need to look even further back to find a function signature. */ |
1561 | if (opt->funcname && funcname_needed) | |
e1327023 | 1562 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1563 | |
49de3216 RS |
1564 | /* Back forward. */ |
1565 | while (cur < lno) { | |
2944e4e6 | 1566 | char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1567 | |
1568 | while (*eol != '\n') | |
1569 | eol++; | |
e1327023 | 1570 | show_line(opt, bol, eol, gs->name, cur, sign); |
49de3216 RS |
1571 | bol = eol + 1; |
1572 | cur++; | |
1573 | } | |
1574 | } | |
1575 | ||
a26345b6 JH |
1576 | static int should_lookahead(struct grep_opt *opt) |
1577 | { | |
1578 | struct grep_pat *p; | |
1579 | ||
1580 | if (opt->extended) | |
1581 | return 0; /* punt for too complex stuff */ | |
1582 | if (opt->invert) | |
1583 | return 0; | |
1584 | for (p = opt->pattern_list; p; p = p->next) { | |
1585 | if (p->token != GREP_PATTERN) | |
1586 | return 0; /* punt for "header only" and stuff */ | |
1587 | } | |
1588 | return 1; | |
1589 | } | |
1590 | ||
1591 | static int look_ahead(struct grep_opt *opt, | |
1592 | unsigned long *left_p, | |
1593 | unsigned *lno_p, | |
1594 | char **bol_p) | |
1595 | { | |
1596 | unsigned lno = *lno_p; | |
1597 | char *bol = *bol_p; | |
1598 | struct grep_pat *p; | |
1599 | char *sp, *last_bol; | |
1600 | regoff_t earliest = -1; | |
1601 | ||
1602 | for (p = opt->pattern_list; p; p = p->next) { | |
1603 | int hit; | |
1604 | regmatch_t m; | |
1605 | ||
97e77784 | 1606 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1607 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1608 | continue; | |
1609 | if (earliest < 0 || m.rm_so < earliest) | |
1610 | earliest = m.rm_so; | |
1611 | } | |
1612 | ||
1613 | if (earliest < 0) { | |
1614 | *bol_p = bol + *left_p; | |
1615 | *left_p = 0; | |
1616 | return 1; | |
1617 | } | |
1618 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1619 | ; /* find the beginning of the line */ | |
1620 | last_bol = sp; | |
1621 | ||
1622 | for (sp = bol; sp < last_bol; sp++) { | |
1623 | if (*sp == '\n') | |
1624 | lno++; | |
1625 | } | |
1626 | *left_p -= last_bol - bol; | |
1627 | *bol_p = last_bol; | |
1628 | *lno_p = lno; | |
1629 | return 0; | |
1630 | } | |
1631 | ||
335ec3bf JK |
1632 | static int fill_textconv_grep(struct userdiff_driver *driver, |
1633 | struct grep_source *gs) | |
1634 | { | |
1635 | struct diff_filespec *df; | |
1636 | char *buf; | |
1637 | size_t size; | |
1638 | ||
1639 | if (!driver || !driver->textconv) | |
1640 | return grep_source_load(gs); | |
1641 | ||
1642 | /* | |
1643 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1644 | * have to pretend to be one. If we could unify the grep_source | |
1645 | * and diff_filespec structs, this mess could just go away. | |
1646 | */ | |
1647 | df = alloc_filespec(gs->path); | |
1648 | switch (gs->type) { | |
1c41c82b | 1649 | case GREP_SOURCE_OID: |
335ec3bf JK |
1650 | fill_filespec(df, gs->identifier, 1, 0100644); |
1651 | break; | |
1652 | case GREP_SOURCE_FILE: | |
f9704c2d | 1653 | fill_filespec(df, &null_oid, 0, 0100644); |
335ec3bf JK |
1654 | break; |
1655 | default: | |
1656 | die("BUG: attempt to textconv something without a path?"); | |
1657 | } | |
1658 | ||
1659 | /* | |
1660 | * fill_textconv is not remotely thread-safe; it may load objects | |
1661 | * behind the scenes, and it modifies the global diff tempfile | |
1662 | * structure. | |
1663 | */ | |
1664 | grep_read_lock(); | |
1665 | size = fill_textconv(driver, df, &buf); | |
1666 | grep_read_unlock(); | |
1667 | free_filespec(df); | |
1668 | ||
1669 | /* | |
1670 | * The normal fill_textconv usage by the diff machinery would just keep | |
1671 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1672 | * grep code passes around a grep_source and assumes that its "buf" | |
1673 | * pointer is the beginning of the thing we are searching. So let's | |
1674 | * install our textconv'd version into the grep_source, taking care not | |
1675 | * to leak any existing buffer. | |
1676 | */ | |
1677 | grep_source_clear_data(gs); | |
1678 | gs->buf = buf; | |
1679 | gs->size = size; | |
1680 | ||
1681 | return 0; | |
1682 | } | |
1683 | ||
4aa2c475 RS |
1684 | static int is_empty_line(const char *bol, const char *eol) |
1685 | { | |
1686 | while (bol < eol && isspace(*bol)) | |
1687 | bol++; | |
1688 | return bol == eol; | |
1689 | } | |
1690 | ||
e1327023 | 1691 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1692 | { |
e1327023 | 1693 | char *bol; |
4aa2c475 | 1694 | char *peek_bol = NULL; |
e1327023 | 1695 | unsigned long left; |
83b5d2f5 | 1696 | unsigned lno = 1; |
83b5d2f5 | 1697 | unsigned last_hit = 0; |
83b5d2f5 | 1698 | int binary_match_only = 0; |
83b5d2f5 | 1699 | unsigned count = 0; |
a26345b6 | 1700 | int try_lookahead = 0; |
ba8ea749 | 1701 | int show_function = 0; |
335ec3bf | 1702 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1703 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1704 | xdemitconf_t xecfg; |
83b5d2f5 | 1705 | |
5b594f45 FK |
1706 | if (!opt->output) |
1707 | opt->output = std_output; | |
1708 | ||
ba8ea749 RS |
1709 | if (opt->pre_context || opt->post_context || opt->file_break || |
1710 | opt->funcbody) { | |
08303c36 RS |
1711 | /* Show hunk marks, except for the first file. */ |
1712 | if (opt->last_shown) | |
1713 | opt->show_hunk_mark = 1; | |
1714 | /* | |
1715 | * If we're using threads then we can't easily identify | |
1716 | * the first file. Always put hunk marks in that case | |
1717 | * and skip the very first one later in work_done(). | |
1718 | */ | |
1719 | if (opt->output != std_output) | |
1720 | opt->show_hunk_mark = 1; | |
1721 | } | |
431d6e7b RS |
1722 | opt->last_shown = 0; |
1723 | ||
335ec3bf JK |
1724 | if (opt->allow_textconv) { |
1725 | grep_source_load_driver(gs); | |
1726 | /* | |
1727 | * We might set up the shared textconv cache data here, which | |
1728 | * is not thread-safe. | |
1729 | */ | |
1730 | grep_attr_lock(); | |
1731 | textconv = userdiff_get_textconv(gs->driver); | |
1732 | grep_attr_unlock(); | |
1733 | } | |
1734 | ||
1735 | /* | |
1736 | * We know the result of a textconv is text, so we only have to care | |
1737 | * about binary handling if we are not using it. | |
1738 | */ | |
1739 | if (!textconv) { | |
1740 | switch (opt->binary) { | |
1741 | case GREP_BINARY_DEFAULT: | |
1742 | if (grep_source_is_binary(gs)) | |
1743 | binary_match_only = 1; | |
1744 | break; | |
1745 | case GREP_BINARY_NOMATCH: | |
1746 | if (grep_source_is_binary(gs)) | |
1747 | return 0; /* Assume unmatch */ | |
1748 | break; | |
1749 | case GREP_BINARY_TEXT: | |
1750 | break; | |
1751 | default: | |
ef1177d1 | 1752 | die("BUG: unknown binary handling mode"); |
335ec3bf | 1753 | } |
83b5d2f5 JH |
1754 | } |
1755 | ||
60ecac98 | 1756 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1757 | opt->priv = &xecfg; |
1758 | ||
a26345b6 | 1759 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1760 | |
335ec3bf | 1761 | if (fill_textconv_grep(textconv, gs) < 0) |
08265798 JK |
1762 | return 0; |
1763 | ||
e1327023 JK |
1764 | bol = gs->buf; |
1765 | left = gs->size; | |
83b5d2f5 JH |
1766 | while (left) { |
1767 | char *eol, ch; | |
0ab7befa | 1768 | int hit; |
83b5d2f5 | 1769 | |
a26345b6 | 1770 | /* |
8997da38 | 1771 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1772 | * has the next hit; don't call it if we need to do |
1773 | * something more than just skipping the current line | |
1774 | * in response to an unmatch for the current line. E.g. | |
1775 | * inside a post-context window, we will show the current | |
1776 | * line as a context around the previous hit when it | |
1777 | * doesn't hit. | |
1778 | */ | |
1779 | if (try_lookahead | |
1780 | && !(last_hit | |
ba8ea749 RS |
1781 | && (show_function || |
1782 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1783 | && look_ahead(opt, &left, &lno, &bol)) |
1784 | break; | |
83b5d2f5 JH |
1785 | eol = end_of_line(bol, &left); |
1786 | ch = *eol; | |
1787 | *eol = 0; | |
1788 | ||
480c1ca6 JH |
1789 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1790 | ctx = GREP_CONTEXT_BODY; | |
1791 | ||
0ab7befa | 1792 | hit = match_line(opt, bol, eol, ctx, collect_hits); |
83b5d2f5 JH |
1793 | *eol = ch; |
1794 | ||
0ab7befa JH |
1795 | if (collect_hits) |
1796 | goto next_line; | |
1797 | ||
83b5d2f5 JH |
1798 | /* "grep -v -e foo -e bla" should list lines |
1799 | * that do not have either, so inversion should | |
1800 | * be done outside. | |
1801 | */ | |
1802 | if (opt->invert) | |
1803 | hit = !hit; | |
1804 | if (opt->unmatch_name_only) { | |
1805 | if (hit) | |
1806 | return 0; | |
1807 | goto next_line; | |
1808 | } | |
1809 | if (hit) { | |
1810 | count++; | |
1811 | if (opt->status_only) | |
1812 | return 1; | |
321ffcc0 | 1813 | if (opt->name_only) { |
e1327023 | 1814 | show_name(opt, gs->name); |
321ffcc0 RS |
1815 | return 1; |
1816 | } | |
c30c10cf RS |
1817 | if (opt->count) |
1818 | goto next_line; | |
83b5d2f5 | 1819 | if (binary_match_only) { |
5b594f45 | 1820 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1821 | output_color(opt, gs->name, strlen(gs->name), |
55f638bd | 1822 | opt->color_filename); |
5b594f45 | 1823 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1824 | return 1; |
1825 | } | |
83b5d2f5 JH |
1826 | /* Hit at this line. If we haven't shown the |
1827 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1828 | */ |
ba8ea749 | 1829 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1830 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1831 | else if (opt->funcname) |
e1327023 JK |
1832 | show_funcname_line(opt, gs, bol, lno); |
1833 | show_line(opt, bol, eol, gs->name, lno, ':'); | |
5dd06d38 | 1834 | last_hit = lno; |
ba8ea749 RS |
1835 | if (opt->funcbody) |
1836 | show_function = 1; | |
1837 | goto next_line; | |
83b5d2f5 | 1838 | } |
4aa2c475 RS |
1839 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1840 | unsigned long peek_left = left; | |
1841 | char *peek_eol = eol; | |
1842 | ||
1843 | /* | |
1844 | * Trailing empty lines are not interesting. | |
1845 | * Peek past them to see if they belong to the | |
1846 | * body of the current function. | |
1847 | */ | |
1848 | peek_bol = bol; | |
1849 | while (is_empty_line(peek_bol, peek_eol)) { | |
1850 | peek_bol = peek_eol + 1; | |
1851 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1852 | } | |
1853 | ||
1854 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1855 | show_function = 0; | |
1856 | } | |
ba8ea749 RS |
1857 | if (show_function || |
1858 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1859 | /* If the last hit is within the post context, |
1860 | * we need to show this line. | |
1861 | */ | |
e1327023 | 1862 | show_line(opt, bol, eol, gs->name, lno, '-'); |
83b5d2f5 | 1863 | } |
83b5d2f5 JH |
1864 | |
1865 | next_line: | |
1866 | bol = eol + 1; | |
1867 | if (!left) | |
1868 | break; | |
1869 | left--; | |
1870 | lno++; | |
1871 | } | |
1872 | ||
0ab7befa JH |
1873 | if (collect_hits) |
1874 | return 0; | |
b48fb5b6 | 1875 | |
83b5d2f5 | 1876 | if (opt->status_only) |
e1f68c66 | 1877 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1878 | if (opt->unmatch_name_only) { |
1879 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1880 | show_name(opt, gs->name); |
83b5d2f5 JH |
1881 | return 1; |
1882 | } | |
1883 | ||
60ecac98 RS |
1884 | xdiff_clear_find_func(&xecfg); |
1885 | opt->priv = NULL; | |
1886 | ||
83b5d2f5 JH |
1887 | /* NEEDSWORK: |
1888 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1889 | * which feels mostly useless but sometimes useful. Maybe | |
1890 | * make it another option? For now suppress them. | |
1891 | */ | |
5b594f45 FK |
1892 | if (opt->count && count) { |
1893 | char buf[32]; | |
f76d947a RS |
1894 | if (opt->pathname) { |
1895 | output_color(opt, gs->name, strlen(gs->name), | |
1896 | opt->color_filename); | |
1897 | output_sep(opt, ':'); | |
1898 | } | |
1a168e5c | 1899 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 1900 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 1901 | return 1; |
5b594f45 | 1902 | } |
83b5d2f5 JH |
1903 | return !!last_hit; |
1904 | } | |
1905 | ||
0ab7befa JH |
1906 | static void clr_hit_marker(struct grep_expr *x) |
1907 | { | |
1908 | /* All-hit markers are meaningful only at the very top level | |
1909 | * OR node. | |
1910 | */ | |
1911 | while (1) { | |
1912 | x->hit = 0; | |
1913 | if (x->node != GREP_NODE_OR) | |
1914 | return; | |
1915 | x->u.binary.left->hit = 0; | |
1916 | x = x->u.binary.right; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | static int chk_hit_marker(struct grep_expr *x) | |
1921 | { | |
1922 | /* Top level nodes have hit markers. See if they all are hits */ | |
1923 | while (1) { | |
1924 | if (x->node != GREP_NODE_OR) | |
1925 | return x->hit; | |
1926 | if (!x->u.binary.left->hit) | |
1927 | return 0; | |
1928 | x = x->u.binary.right; | |
1929 | } | |
1930 | } | |
1931 | ||
e1327023 | 1932 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
1933 | { |
1934 | /* | |
1935 | * we do not have to do the two-pass grep when we do not check | |
1936 | * buffer-wide "all-match". | |
1937 | */ | |
1938 | if (!opt->all_match) | |
e1327023 | 1939 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
1940 | |
1941 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
1942 | * We first clear hit markers from them. | |
1943 | */ | |
1944 | clr_hit_marker(opt->pattern_expression); | |
e1327023 | 1945 | grep_source_1(opt, gs, 1); |
0ab7befa JH |
1946 | |
1947 | if (!chk_hit_marker(opt->pattern_expression)) | |
1948 | return 0; | |
1949 | ||
e1327023 JK |
1950 | return grep_source_1(opt, gs, 0); |
1951 | } | |
1952 | ||
c876d6da | 1953 | int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) |
e1327023 JK |
1954 | { |
1955 | struct grep_source gs; | |
1956 | int r; | |
1957 | ||
55c61688 | 1958 | grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); |
e1327023 JK |
1959 | gs.buf = buf; |
1960 | gs.size = size; | |
1961 | ||
1962 | r = grep_source(opt, &gs); | |
1963 | ||
1964 | grep_source_clear(&gs); | |
1965 | return r; | |
1966 | } | |
1967 | ||
1968 | void grep_source_init(struct grep_source *gs, enum grep_source_type type, | |
55c61688 NTND |
1969 | const char *name, const char *path, |
1970 | const void *identifier) | |
e1327023 JK |
1971 | { |
1972 | gs->type = type; | |
8c53f071 JK |
1973 | gs->name = xstrdup_or_null(name); |
1974 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
1975 | gs->buf = NULL; |
1976 | gs->size = 0; | |
94ad9d9e | 1977 | gs->driver = NULL; |
e1327023 JK |
1978 | |
1979 | switch (type) { | |
1980 | case GREP_SOURCE_FILE: | |
1981 | gs->identifier = xstrdup(identifier); | |
1982 | break; | |
1c41c82b BW |
1983 | case GREP_SOURCE_OID: |
1984 | gs->identifier = oiddup(identifier); | |
e1327023 JK |
1985 | break; |
1986 | case GREP_SOURCE_BUF: | |
1987 | gs->identifier = NULL; | |
4538eef5 | 1988 | break; |
e1327023 JK |
1989 | } |
1990 | } | |
1991 | ||
1992 | void grep_source_clear(struct grep_source *gs) | |
1993 | { | |
88ce3ef6 ÆAB |
1994 | FREE_AND_NULL(gs->name); |
1995 | FREE_AND_NULL(gs->path); | |
1996 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
1997 | grep_source_clear_data(gs); |
1998 | } | |
1999 | ||
2000 | void grep_source_clear_data(struct grep_source *gs) | |
2001 | { | |
2002 | switch (gs->type) { | |
2003 | case GREP_SOURCE_FILE: | |
1c41c82b | 2004 | case GREP_SOURCE_OID: |
6a83d902 | 2005 | FREE_AND_NULL(gs->buf); |
e1327023 JK |
2006 | gs->size = 0; |
2007 | break; | |
2008 | case GREP_SOURCE_BUF: | |
2009 | /* leave user-provided buf intact */ | |
2010 | break; | |
2011 | } | |
2012 | } | |
2013 | ||
1c41c82b | 2014 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
2015 | { |
2016 | enum object_type type; | |
2017 | ||
2018 | grep_read_lock(); | |
b4f5aca4 | 2019 | gs->buf = read_object_file(gs->identifier, &type, &gs->size); |
e1327023 JK |
2020 | grep_read_unlock(); |
2021 | ||
2022 | if (!gs->buf) | |
2023 | return error(_("'%s': unable to read %s"), | |
2024 | gs->name, | |
1c41c82b | 2025 | oid_to_hex(gs->identifier)); |
e1327023 JK |
2026 | return 0; |
2027 | } | |
2028 | ||
2029 | static int grep_source_load_file(struct grep_source *gs) | |
2030 | { | |
2031 | const char *filename = gs->identifier; | |
2032 | struct stat st; | |
2033 | char *data; | |
2034 | size_t size; | |
2035 | int i; | |
2036 | ||
2037 | if (lstat(filename, &st) < 0) { | |
2038 | err_ret: | |
2039 | if (errno != ENOENT) | |
7645d8f1 | 2040 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
2041 | return -1; |
2042 | } | |
2043 | if (!S_ISREG(st.st_mode)) | |
2044 | return -1; | |
2045 | size = xsize_t(st.st_size); | |
2046 | i = open(filename, O_RDONLY); | |
2047 | if (i < 0) | |
2048 | goto err_ret; | |
3733e694 | 2049 | data = xmallocz(size); |
e1327023 | 2050 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 2051 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
2052 | close(i); |
2053 | free(data); | |
2054 | return -1; | |
2055 | } | |
2056 | close(i); | |
e1327023 JK |
2057 | |
2058 | gs->buf = data; | |
2059 | gs->size = size; | |
2060 | return 0; | |
2061 | } | |
2062 | ||
3083301e | 2063 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
2064 | { |
2065 | if (gs->buf) | |
2066 | return 0; | |
2067 | ||
2068 | switch (gs->type) { | |
2069 | case GREP_SOURCE_FILE: | |
2070 | return grep_source_load_file(gs); | |
1c41c82b BW |
2071 | case GREP_SOURCE_OID: |
2072 | return grep_source_load_oid(gs); | |
e1327023 JK |
2073 | case GREP_SOURCE_BUF: |
2074 | return gs->buf ? 0 : -1; | |
2075 | } | |
4538eef5 | 2076 | die("BUG: invalid grep_source type to load"); |
0ab7befa | 2077 | } |
94ad9d9e JK |
2078 | |
2079 | void grep_source_load_driver(struct grep_source *gs) | |
2080 | { | |
2081 | if (gs->driver) | |
2082 | return; | |
2083 | ||
2084 | grep_attr_lock(); | |
55c61688 NTND |
2085 | if (gs->path) |
2086 | gs->driver = userdiff_find_by_path(gs->path); | |
94ad9d9e JK |
2087 | if (!gs->driver) |
2088 | gs->driver = userdiff_find_by_name("default"); | |
2089 | grep_attr_unlock(); | |
2090 | } | |
41b59bfc | 2091 | |
3083301e | 2092 | static int grep_source_is_binary(struct grep_source *gs) |
41b59bfc JK |
2093 | { |
2094 | grep_source_load_driver(gs); | |
2095 | if (gs->driver->binary != -1) | |
2096 | return gs->driver->binary; | |
2097 | ||
2098 | if (!grep_source_load(gs)) | |
2099 | return buffer_is_binary(gs->buf, gs->size); | |
2100 | ||
2101 | return 0; | |
2102 | } |