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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" |
3ac68a93 | 11 | #include "help.h" |
83b5d2f5 | 12 | |
07a7d656 JH |
13 | static int grep_source_load(struct grep_source *gs); |
14 | static int grep_source_is_binary(struct grep_source *gs); | |
15 | ||
7687a054 JH |
16 | static struct grep_opt grep_defaults; |
17 | ||
fa151dc5 NTND |
18 | static const char *color_grep_slots[] = { |
19 | [GREP_COLOR_CONTEXT] = "context", | |
20 | [GREP_COLOR_FILENAME] = "filename", | |
21 | [GREP_COLOR_FUNCTION] = "function", | |
22 | [GREP_COLOR_LINENO] = "lineNumber", | |
23 | [GREP_COLOR_MATCH_CONTEXT] = "matchContext", | |
24 | [GREP_COLOR_MATCH_SELECTED] = "matchSelected", | |
25 | [GREP_COLOR_SELECTED] = "selected", | |
26 | [GREP_COLOR_SEP] = "separator", | |
27 | }; | |
28 | ||
379642bc BW |
29 | static void std_output(struct grep_opt *opt, const void *buf, size_t size) |
30 | { | |
31 | fwrite(buf, size, 1, stdout); | |
32 | } | |
33 | ||
75e5e9c3 SB |
34 | static void color_set(char *dst, const char *color_bytes) |
35 | { | |
36 | xsnprintf(dst, COLOR_MAXLEN, "%s", color_bytes); | |
37 | } | |
38 | ||
7687a054 JH |
39 | /* |
40 | * Initialize the grep_defaults template with hardcoded defaults. | |
41 | * We could let the compiler do this, but without C99 initializers | |
42 | * the code gets unwieldy and unreadable, so... | |
43 | */ | |
44 | void init_grep_defaults(void) | |
45 | { | |
46 | struct grep_opt *opt = &grep_defaults; | |
918d4e1c JH |
47 | static int run_once; |
48 | ||
49 | if (run_once) | |
50 | return; | |
51 | run_once++; | |
7687a054 JH |
52 | |
53 | memset(opt, 0, sizeof(*opt)); | |
54 | opt->relative = 1; | |
55 | opt->pathname = 1; | |
7687a054 JH |
56 | opt->max_depth = -1; |
57 | opt->pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED; | |
fa151dc5 NTND |
58 | color_set(opt->colors[GREP_COLOR_CONTEXT], ""); |
59 | color_set(opt->colors[GREP_COLOR_FILENAME], ""); | |
60 | color_set(opt->colors[GREP_COLOR_FUNCTION], ""); | |
61 | color_set(opt->colors[GREP_COLOR_LINENO], ""); | |
62 | color_set(opt->colors[GREP_COLOR_MATCH_CONTEXT], GIT_COLOR_BOLD_RED); | |
63 | color_set(opt->colors[GREP_COLOR_MATCH_SELECTED], GIT_COLOR_BOLD_RED); | |
64 | color_set(opt->colors[GREP_COLOR_SELECTED], ""); | |
65 | color_set(opt->colors[GREP_COLOR_SEP], GIT_COLOR_CYAN); | |
7687a054 | 66 | opt->color = -1; |
379642bc | 67 | opt->output = std_output; |
7687a054 JH |
68 | } |
69 | ||
70 | static int parse_pattern_type_arg(const char *opt, const char *arg) | |
71 | { | |
72 | if (!strcmp(arg, "default")) | |
73 | return GREP_PATTERN_TYPE_UNSPECIFIED; | |
74 | else if (!strcmp(arg, "basic")) | |
75 | return GREP_PATTERN_TYPE_BRE; | |
76 | else if (!strcmp(arg, "extended")) | |
77 | return GREP_PATTERN_TYPE_ERE; | |
78 | else if (!strcmp(arg, "fixed")) | |
79 | return GREP_PATTERN_TYPE_FIXED; | |
80 | else if (!strcmp(arg, "perl")) | |
81 | return GREP_PATTERN_TYPE_PCRE; | |
82 | die("bad %s argument: %s", opt, arg); | |
83 | } | |
84 | ||
3ac68a93 NTND |
85 | define_list_config_array_extra(color_grep_slots, {"match"}); |
86 | ||
7687a054 JH |
87 | /* |
88 | * Read the configuration file once and store it in | |
89 | * the grep_defaults template. | |
90 | */ | |
91 | int grep_config(const char *var, const char *value, void *cb) | |
92 | { | |
93 | struct grep_opt *opt = &grep_defaults; | |
fa151dc5 | 94 | const char *slot; |
7687a054 JH |
95 | |
96 | if (userdiff_config(var, value) < 0) | |
97 | return -1; | |
98 | ||
99 | if (!strcmp(var, "grep.extendedregexp")) { | |
c7e38551 | 100 | opt->extended_regexp_option = git_config_bool(var, value); |
7687a054 JH |
101 | return 0; |
102 | } | |
103 | ||
104 | if (!strcmp(var, "grep.patterntype")) { | |
105 | opt->pattern_type_option = parse_pattern_type_arg(var, value); | |
106 | return 0; | |
107 | } | |
108 | ||
109 | if (!strcmp(var, "grep.linenumber")) { | |
110 | opt->linenum = git_config_bool(var, value); | |
111 | return 0; | |
112 | } | |
113 | ||
6453f7b3 AS |
114 | if (!strcmp(var, "grep.fullname")) { |
115 | opt->relative = !git_config_bool(var, value); | |
116 | return 0; | |
117 | } | |
118 | ||
7687a054 JH |
119 | if (!strcmp(var, "color.grep")) |
120 | opt->color = git_config_colorbool(var, value); | |
fa151dc5 NTND |
121 | if (!strcmp(var, "color.grep.match")) { |
122 | if (grep_config("color.grep.matchcontext", value, cb) < 0) | |
123 | return -1; | |
124 | if (grep_config("color.grep.matchselected", value, cb) < 0) | |
125 | return -1; | |
126 | } else if (skip_prefix(var, "color.grep.", &slot)) { | |
127 | int i = LOOKUP_CONFIG(color_grep_slots, slot); | |
128 | char *color; | |
129 | ||
130 | if (i < 0) | |
131 | return -1; | |
132 | color = opt->colors[i]; | |
7687a054 JH |
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; | |
fa151dc5 | 148 | int i; |
7687a054 JH |
149 | |
150 | memset(opt, 0, sizeof(*opt)); | |
151 | opt->prefix = prefix; | |
152 | opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; | |
153 | opt->pattern_tail = &opt->pattern_list; | |
154 | opt->header_tail = &opt->header_list; | |
155 | ||
156 | opt->color = def->color; | |
157 | opt->extended_regexp_option = def->extended_regexp_option; | |
158 | opt->pattern_type_option = def->pattern_type_option; | |
159 | opt->linenum = def->linenum; | |
160 | opt->max_depth = def->max_depth; | |
161 | opt->pathname = def->pathname; | |
7687a054 | 162 | opt->relative = def->relative; |
379642bc | 163 | opt->output = def->output; |
7687a054 | 164 | |
fa151dc5 NTND |
165 | for (i = 0; i < NR_GREP_COLORS; i++) |
166 | color_set(opt->colors[i], def->colors[i]); | |
7687a054 | 167 | } |
07a7d656 | 168 | |
8465541e | 169 | static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
c5c31d33 | 170 | { |
07a3d411 ÆAB |
171 | /* |
172 | * When committing to the pattern type by setting the relevant | |
173 | * fields in grep_opt it's generally not necessary to zero out | |
174 | * the fields we're not choosing, since they won't have been | |
175 | * set by anything. The extended_regexp_option field is the | |
176 | * only exception to this. | |
177 | * | |
178 | * This is because in the process of parsing grep.patternType | |
179 | * & grep.extendedRegexp we set opt->pattern_type_option and | |
180 | * opt->extended_regexp_option, respectively. We then | |
181 | * internally use opt->extended_regexp_option to see if we're | |
182 | * compiling an ERE. It must be unset if that's not actually | |
183 | * the case. | |
184 | */ | |
185 | if (pattern_type != GREP_PATTERN_TYPE_ERE && | |
186 | opt->extended_regexp_option) | |
187 | opt->extended_regexp_option = 0; | |
188 | ||
c5c31d33 JH |
189 | switch (pattern_type) { |
190 | case GREP_PATTERN_TYPE_UNSPECIFIED: | |
191 | /* fall through */ | |
192 | ||
193 | case GREP_PATTERN_TYPE_BRE: | |
c5c31d33 JH |
194 | break; |
195 | ||
196 | case GREP_PATTERN_TYPE_ERE: | |
07a3d411 | 197 | opt->extended_regexp_option = 1; |
c5c31d33 JH |
198 | break; |
199 | ||
200 | case GREP_PATTERN_TYPE_FIXED: | |
201 | opt->fixed = 1; | |
c5c31d33 JH |
202 | break; |
203 | ||
204 | case GREP_PATTERN_TYPE_PCRE: | |
94da9193 | 205 | #ifdef USE_LIBPCRE2 |
94da9193 ÆAB |
206 | opt->pcre2 = 1; |
207 | #else | |
208 | /* | |
209 | * It's important that pcre1 always be assigned to | |
210 | * even when there's no USE_LIBPCRE* defined. We still | |
211 | * call the PCRE stub function, it just dies with | |
212 | * "cannot use Perl-compatible regexes[...]". | |
213 | */ | |
6d4b5747 | 214 | opt->pcre1 = 1; |
94da9193 | 215 | #endif |
c5c31d33 JH |
216 | break; |
217 | } | |
218 | } | |
219 | ||
8465541e JH |
220 | void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
221 | { | |
222 | if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) | |
223 | grep_set_pattern_type_option(pattern_type, opt); | |
224 | else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) | |
225 | grep_set_pattern_type_option(opt->pattern_type_option, opt); | |
226 | else if (opt->extended_regexp_option) | |
07a3d411 ÆAB |
227 | /* |
228 | * This branch *must* happen after setting from the | |
229 | * opt->pattern_type_option above, we don't want | |
230 | * grep.extendedRegexp to override grep.patternType! | |
231 | */ | |
8465541e JH |
232 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); |
233 | } | |
234 | ||
fc456751 RS |
235 | static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, |
236 | const char *origin, int no, | |
237 | enum grep_pat_token t, | |
238 | enum grep_header_field field) | |
a4d7d2c6 JH |
239 | { |
240 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
526a858a | 241 | p->pattern = xmemdupz(pat, patlen); |
fc456751 RS |
242 | p->patternlen = patlen; |
243 | p->origin = origin; | |
244 | p->no = no; | |
245 | p->token = t; | |
a4d7d2c6 | 246 | p->field = field; |
fc456751 RS |
247 | return p; |
248 | } | |
249 | ||
2b3873ff RS |
250 | static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p) |
251 | { | |
252 | **tail = p; | |
253 | *tail = &p->next; | |
a4d7d2c6 | 254 | p->next = NULL; |
526a858a RS |
255 | |
256 | switch (p->token) { | |
257 | case GREP_PATTERN: /* atom */ | |
258 | case GREP_PATTERN_HEAD: | |
259 | case GREP_PATTERN_BODY: | |
260 | for (;;) { | |
261 | struct grep_pat *new_pat; | |
262 | size_t len = 0; | |
263 | char *cp = p->pattern + p->patternlen, *nl = NULL; | |
264 | while (++len <= p->patternlen) { | |
265 | if (*(--cp) == '\n') { | |
266 | nl = cp; | |
267 | break; | |
268 | } | |
269 | } | |
270 | if (!nl) | |
271 | break; | |
272 | new_pat = create_grep_pat(nl + 1, len - 1, p->origin, | |
273 | p->no, p->token, p->field); | |
274 | new_pat->next = p->next; | |
275 | if (!p->next) | |
276 | *tail = &new_pat->next; | |
277 | p->next = new_pat; | |
278 | *nl = '\0'; | |
279 | p->patternlen -= len; | |
280 | } | |
281 | break; | |
282 | default: | |
283 | break; | |
284 | } | |
2b3873ff RS |
285 | } |
286 | ||
fc456751 RS |
287 | void append_header_grep_pattern(struct grep_opt *opt, |
288 | enum grep_header_field field, const char *pat) | |
289 | { | |
290 | struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, | |
291 | GREP_PATTERN_HEAD, field); | |
baa6378f JH |
292 | if (field == GREP_HEADER_REFLOG) |
293 | opt->use_reflog_filter = 1; | |
2b3873ff | 294 | do_append_grep_pat(&opt->header_tail, p); |
a4d7d2c6 JH |
295 | } |
296 | ||
83b5d2f5 JH |
297 | void append_grep_pattern(struct grep_opt *opt, const char *pat, |
298 | const char *origin, int no, enum grep_pat_token t) | |
ed40a095 RS |
299 | { |
300 | append_grep_pat(opt, pat, strlen(pat), origin, no, t); | |
301 | } | |
302 | ||
303 | void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, | |
304 | const char *origin, int no, enum grep_pat_token t) | |
83b5d2f5 | 305 | { |
fc456751 | 306 | struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0); |
2b3873ff | 307 | do_append_grep_pat(&opt->pattern_tail, p); |
83b5d2f5 JH |
308 | } |
309 | ||
5b594f45 FK |
310 | struct grep_opt *grep_opt_dup(const struct grep_opt *opt) |
311 | { | |
312 | struct grep_pat *pat; | |
313 | struct grep_opt *ret = xmalloc(sizeof(struct grep_opt)); | |
314 | *ret = *opt; | |
315 | ||
316 | ret->pattern_list = NULL; | |
317 | ret->pattern_tail = &ret->pattern_list; | |
318 | ||
319 | for(pat = opt->pattern_list; pat != NULL; pat = pat->next) | |
320 | { | |
321 | if(pat->token == GREP_PATTERN_HEAD) | |
322 | append_header_grep_pattern(ret, pat->field, | |
323 | pat->pattern); | |
324 | else | |
ed40a095 RS |
325 | append_grep_pat(ret, pat->pattern, pat->patternlen, |
326 | pat->origin, pat->no, pat->token); | |
5b594f45 FK |
327 | } |
328 | ||
329 | return ret; | |
330 | } | |
331 | ||
a30c148a MK |
332 | static NORETURN void compile_regexp_failed(const struct grep_pat *p, |
333 | const char *error) | |
334 | { | |
335 | char where[1024]; | |
336 | ||
337 | if (p->no) | |
19bdd3e7 | 338 | xsnprintf(where, sizeof(where), "In '%s' at %d, ", p->origin, p->no); |
a30c148a | 339 | else if (p->origin) |
19bdd3e7 | 340 | xsnprintf(where, sizeof(where), "%s, ", p->origin); |
a30c148a MK |
341 | else |
342 | where[0] = 0; | |
343 | ||
344 | die("%s'%s': %s", where, p->pattern, error); | |
345 | } | |
346 | ||
543f1c0c ÆAB |
347 | static int is_fixed(const char *s, size_t len) |
348 | { | |
349 | size_t i; | |
350 | ||
351 | for (i = 0; i < len; i++) { | |
352 | if (is_regex_special(s[i])) | |
353 | return 0; | |
354 | } | |
355 | ||
356 | return 1; | |
357 | } | |
358 | ||
219e65b6 ÆAB |
359 | static int has_null(const char *s, size_t len) |
360 | { | |
361 | /* | |
362 | * regcomp cannot accept patterns with NULs so when using it | |
363 | * we consider any pattern containing a NUL fixed. | |
364 | */ | |
365 | if (memchr(s, 0, len)) | |
366 | return 1; | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
3485bea1 | 371 | #ifdef USE_LIBPCRE1 |
6d4b5747 | 372 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
373 | { |
374 | const char *error; | |
375 | int erroffset; | |
fba4f125 | 376 | int options = PCRE_MULTILINE; |
63e7e9d8 | 377 | |
9d9babb8 NTND |
378 | if (opt->ignore_case) { |
379 | if (has_non_ascii(p->pattern)) | |
6d4b5747 | 380 | p->pcre1_tables = pcre_maketables(); |
63e7e9d8 | 381 | options |= PCRE_CASELESS; |
9d9babb8 | 382 | } |
18547aac NTND |
383 | if (is_utf8_locale() && has_non_ascii(p->pattern)) |
384 | options |= PCRE_UTF8; | |
63e7e9d8 | 385 | |
6d4b5747 ÆAB |
386 | p->pcre1_regexp = pcre_compile(p->pattern, options, &error, &erroffset, |
387 | p->pcre1_tables); | |
388 | if (!p->pcre1_regexp) | |
63e7e9d8 MK |
389 | compile_regexp_failed(p, error); |
390 | ||
2fff1e19 | 391 | p->pcre1_extra_info = pcre_study(p->pcre1_regexp, GIT_PCRE_STUDY_JIT_COMPILE, &error); |
6d4b5747 | 392 | if (!p->pcre1_extra_info && error) |
63e7e9d8 | 393 | die("%s", error); |
fbaceaac | 394 | |
e87de7ca | 395 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
396 | pcre_config(PCRE_CONFIG_JIT, &p->pcre1_jit_on); |
397 | if (p->pcre1_jit_on == 1) { | |
398 | p->pcre1_jit_stack = pcre_jit_stack_alloc(1, 1024 * 1024); | |
399 | if (!p->pcre1_jit_stack) | |
400 | die("Couldn't allocate PCRE JIT stack"); | |
401 | pcre_assign_jit_stack(p->pcre1_extra_info, NULL, p->pcre1_jit_stack); | |
402 | } else if (p->pcre1_jit_on != 0) { | |
033abf97 | 403 | BUG("The pcre1_jit_on variable should be 0 or 1, not %d", |
fbaceaac ÆAB |
404 | p->pcre1_jit_on); |
405 | } | |
406 | #endif | |
63e7e9d8 MK |
407 | } |
408 | ||
6d4b5747 | 409 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
410 | regmatch_t *match, int eflags) |
411 | { | |
412 | int ovector[30], ret, flags = 0; | |
413 | ||
414 | if (eflags & REG_NOTBOL) | |
415 | flags |= PCRE_NOTBOL; | |
416 | ||
e87de7ca | 417 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
418 | if (p->pcre1_jit_on) { |
419 | ret = pcre_jit_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
420 | eol - line, 0, flags, ovector, | |
421 | ARRAY_SIZE(ovector), p->pcre1_jit_stack); | |
422 | } else | |
423 | #endif | |
424 | { | |
425 | ret = pcre_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
426 | eol - line, 0, flags, ovector, | |
427 | ARRAY_SIZE(ovector)); | |
428 | } | |
429 | ||
63e7e9d8 MK |
430 | if (ret < 0 && ret != PCRE_ERROR_NOMATCH) |
431 | die("pcre_exec failed with error code %d", ret); | |
432 | if (ret > 0) { | |
433 | ret = 0; | |
434 | match->rm_so = ovector[0]; | |
435 | match->rm_eo = ovector[1]; | |
436 | } | |
437 | ||
438 | return ret; | |
439 | } | |
440 | ||
6d4b5747 | 441 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 | 442 | { |
6d4b5747 | 443 | pcre_free(p->pcre1_regexp); |
e87de7ca | 444 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
445 | if (p->pcre1_jit_on) { |
446 | pcre_free_study(p->pcre1_extra_info); | |
447 | pcre_jit_stack_free(p->pcre1_jit_stack); | |
448 | } else | |
449 | #endif | |
450 | { | |
451 | pcre_free(p->pcre1_extra_info); | |
452 | } | |
6d4b5747 | 453 | pcre_free((void *)p->pcre1_tables); |
63e7e9d8 | 454 | } |
3485bea1 | 455 | #else /* !USE_LIBPCRE1 */ |
6d4b5747 | 456 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
457 | { |
458 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
459 | } | |
460 | ||
6d4b5747 | 461 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
462 | regmatch_t *match, int eflags) |
463 | { | |
464 | return 1; | |
465 | } | |
466 | ||
6d4b5747 | 467 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 MK |
468 | { |
469 | } | |
3485bea1 | 470 | #endif /* !USE_LIBPCRE1 */ |
63e7e9d8 | 471 | |
94da9193 ÆAB |
472 | #ifdef USE_LIBPCRE2 |
473 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
474 | { | |
475 | int error; | |
476 | PCRE2_UCHAR errbuf[256]; | |
477 | PCRE2_SIZE erroffset; | |
478 | int options = PCRE2_MULTILINE; | |
479 | const uint8_t *character_tables = NULL; | |
480 | int jitret; | |
a25b9085 ÆAB |
481 | int patinforet; |
482 | size_t jitsizearg; | |
94da9193 ÆAB |
483 | |
484 | assert(opt->pcre2); | |
485 | ||
486 | p->pcre2_compile_context = NULL; | |
487 | ||
488 | if (opt->ignore_case) { | |
489 | if (has_non_ascii(p->pattern)) { | |
490 | character_tables = pcre2_maketables(NULL); | |
491 | p->pcre2_compile_context = pcre2_compile_context_create(NULL); | |
492 | pcre2_set_character_tables(p->pcre2_compile_context, character_tables); | |
493 | } | |
494 | options |= PCRE2_CASELESS; | |
495 | } | |
496 | if (is_utf8_locale() && has_non_ascii(p->pattern)) | |
497 | options |= PCRE2_UTF; | |
498 | ||
499 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
500 | p->patternlen, options, &error, &erroffset, | |
501 | p->pcre2_compile_context); | |
502 | ||
503 | if (p->pcre2_pattern) { | |
504 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL); | |
505 | if (!p->pcre2_match_data) | |
506 | die("Couldn't allocate PCRE2 match data"); | |
507 | } else { | |
508 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
509 | compile_regexp_failed(p, (const char *)&errbuf); | |
510 | } | |
511 | ||
512 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
513 | if (p->pcre2_jit_on == 1) { | |
514 | jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE); | |
515 | if (jitret) | |
516 | die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret); | |
a25b9085 ÆAB |
517 | |
518 | /* | |
519 | * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just | |
520 | * tells us whether the library itself supports JIT, | |
521 | * but to see whether we're going to be actually using | |
522 | * JIT we need to extract PCRE2_INFO_JITSIZE from the | |
523 | * pattern *after* we do pcre2_jit_compile() above. | |
524 | * | |
525 | * This is because if the pattern contains the | |
526 | * (*NO_JIT) verb (see pcre2syntax(3)) | |
527 | * pcre2_jit_compile() will exit early with 0. If we | |
528 | * then proceed to call pcre2_jit_match() further down | |
529 | * the line instead of pcre2_match() we'll either | |
530 | * segfault (pre PCRE 10.31) or run into a fatal error | |
531 | * (post PCRE2 10.31) | |
532 | */ | |
533 | patinforet = pcre2_pattern_info(p->pcre2_pattern, PCRE2_INFO_JITSIZE, &jitsizearg); | |
534 | if (patinforet) | |
535 | BUG("pcre2_pattern_info() failed: %d", patinforet); | |
536 | if (jitsizearg == 0) { | |
537 | p->pcre2_jit_on = 0; | |
538 | return; | |
539 | } | |
540 | ||
94da9193 ÆAB |
541 | p->pcre2_jit_stack = pcre2_jit_stack_create(1, 1024 * 1024, NULL); |
542 | if (!p->pcre2_jit_stack) | |
543 | die("Couldn't allocate PCRE2 JIT stack"); | |
544 | p->pcre2_match_context = pcre2_match_context_create(NULL); | |
674ad936 | 545 | if (!p->pcre2_match_context) |
94da9193 ÆAB |
546 | die("Couldn't allocate PCRE2 match context"); |
547 | pcre2_jit_stack_assign(p->pcre2_match_context, NULL, p->pcre2_jit_stack); | |
548 | } else if (p->pcre2_jit_on != 0) { | |
033abf97 | 549 | BUG("The pcre2_jit_on variable should be 0 or 1, not %d", |
94da9193 ÆAB |
550 | p->pcre1_jit_on); |
551 | } | |
552 | } | |
553 | ||
554 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
555 | regmatch_t *match, int eflags) | |
556 | { | |
557 | int ret, flags = 0; | |
558 | PCRE2_SIZE *ovector; | |
559 | PCRE2_UCHAR errbuf[256]; | |
560 | ||
561 | if (eflags & REG_NOTBOL) | |
562 | flags |= PCRE2_NOTBOL; | |
563 | ||
564 | if (p->pcre2_jit_on) | |
565 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
566 | eol - line, 0, flags, p->pcre2_match_data, | |
567 | NULL); | |
568 | else | |
569 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
570 | eol - line, 0, flags, p->pcre2_match_data, | |
571 | NULL); | |
572 | ||
573 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
574 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
575 | die("%s failed with error code %d: %s", | |
576 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
577 | errbuf); | |
578 | } | |
579 | if (ret > 0) { | |
580 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
581 | ret = 0; | |
582 | match->rm_so = (int)ovector[0]; | |
583 | match->rm_eo = (int)ovector[1]; | |
584 | } | |
585 | ||
586 | return ret; | |
587 | } | |
588 | ||
589 | static void free_pcre2_pattern(struct grep_pat *p) | |
590 | { | |
591 | pcre2_compile_context_free(p->pcre2_compile_context); | |
592 | pcre2_code_free(p->pcre2_pattern); | |
593 | pcre2_match_data_free(p->pcre2_match_data); | |
594 | pcre2_jit_stack_free(p->pcre2_jit_stack); | |
595 | pcre2_match_context_free(p->pcre2_match_context); | |
596 | } | |
597 | #else /* !USE_LIBPCRE2 */ | |
598 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
599 | { | |
600 | /* | |
601 | * Unreachable until USE_LIBPCRE2 becomes synonymous with | |
602 | * USE_LIBPCRE. See the sibling comment in | |
603 | * grep_set_pattern_type_option(). | |
604 | */ | |
605 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
606 | } | |
607 | ||
608 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
609 | regmatch_t *match, int eflags) | |
610 | { | |
611 | return 1; | |
612 | } | |
613 | ||
614 | static void free_pcre2_pattern(struct grep_pat *p) | |
615 | { | |
616 | } | |
617 | #endif /* !USE_LIBPCRE2 */ | |
618 | ||
793dc676 NTND |
619 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
620 | { | |
621 | struct strbuf sb = STRBUF_INIT; | |
622 | int err; | |
1ceababc | 623 | int regflags = 0; |
793dc676 NTND |
624 | |
625 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
626 | if (opt->ignore_case) |
627 | regflags |= REG_ICASE; | |
628 | err = regcomp(&p->regexp, sb.buf, regflags); | |
629 | if (opt->debug) | |
630 | fprintf(stderr, "fixed %s\n", sb.buf); | |
631 | strbuf_release(&sb); | |
632 | if (err) { | |
633 | char errbuf[1024]; | |
634 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
793dc676 NTND |
635 | compile_regexp_failed(p, errbuf); |
636 | } | |
637 | } | |
638 | ||
83b5d2f5 JH |
639 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
640 | { | |
07a3d411 | 641 | int ascii_only; |
c822255c | 642 | int err; |
07a3d411 | 643 | int regflags = REG_NEWLINE; |
c822255c | 644 | |
d7eb527d | 645 | p->word_regexp = opt->word_regexp; |
5183bf67 | 646 | p->ignore_case = opt->ignore_case; |
5c1ebcca | 647 | ascii_only = !has_non_ascii(p->pattern); |
d7eb527d | 648 | |
793dc676 NTND |
649 | /* |
650 | * Even when -F (fixed) asks us to do a non-regexp search, we | |
651 | * may not be able to correctly case-fold when -i | |
652 | * (ignore-case) is asked (in which case, we'll synthesize a | |
653 | * regexp to match the pattern that matches regexp special | |
654 | * characters literally, while ignoring case differences). On | |
655 | * the other hand, even without -F, if the pattern does not | |
656 | * have any regexp special characters and there is no need for | |
657 | * case-folding search, we can internally turn it into a | |
658 | * simple string match using kws. p->fixed tells us if we | |
659 | * want to use kws. | |
660 | */ | |
219e65b6 ÆAB |
661 | if (opt->fixed || |
662 | has_null(p->pattern, p->patternlen) || | |
663 | is_fixed(p->pattern, p->patternlen)) | |
07a3d411 | 664 | p->fixed = !p->ignore_case || ascii_only; |
9eceddee FK |
665 | |
666 | if (p->fixed) { | |
07a3d411 | 667 | p->kws = kwsalloc(p->ignore_case ? tolower_trans_tbl : NULL); |
9eceddee FK |
668 | kwsincr(p->kws, p->pattern, p->patternlen); |
669 | kwsprep(p->kws); | |
c822255c | 670 | return; |
793dc676 NTND |
671 | } else if (opt->fixed) { |
672 | /* | |
673 | * We come here when the pattern has the non-ascii | |
674 | * characters we cannot case-fold, and asked to | |
675 | * ignore-case. | |
676 | */ | |
677 | compile_fixed_regexp(p, opt); | |
678 | return; | |
9eceddee | 679 | } |
c822255c | 680 | |
94da9193 ÆAB |
681 | if (opt->pcre2) { |
682 | compile_pcre2_pattern(p, opt); | |
683 | return; | |
684 | } | |
685 | ||
6d4b5747 ÆAB |
686 | if (opt->pcre1) { |
687 | compile_pcre1_regexp(p, opt); | |
63e7e9d8 MK |
688 | return; |
689 | } | |
690 | ||
07a3d411 ÆAB |
691 | if (p->ignore_case) |
692 | regflags |= REG_ICASE; | |
693 | if (opt->extended_regexp_option) | |
694 | regflags |= REG_EXTENDED; | |
695 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
696 | if (err) { |
697 | char errbuf[1024]; | |
83b5d2f5 | 698 | regerror(err, &p->regexp, errbuf, 1024); |
a30c148a | 699 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
700 | } |
701 | } | |
702 | ||
0ab7befa | 703 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
704 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
705 | { | |
706 | struct grep_pat *p; | |
707 | struct grep_expr *x; | |
708 | ||
709 | p = *list; | |
c922b01f LT |
710 | if (!p) |
711 | return NULL; | |
83b5d2f5 JH |
712 | switch (p->token) { |
713 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
714 | case GREP_PATTERN_HEAD: |
715 | case GREP_PATTERN_BODY: | |
83b5d2f5 JH |
716 | x = xcalloc(1, sizeof (struct grep_expr)); |
717 | x->node = GREP_NODE_ATOM; | |
718 | x->u.atom = p; | |
719 | *list = p->next; | |
720 | return x; | |
721 | case GREP_OPEN_PAREN: | |
722 | *list = p->next; | |
0ab7befa | 723 | x = compile_pattern_or(list); |
83b5d2f5 JH |
724 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
725 | die("unmatched parenthesis"); | |
726 | *list = (*list)->next; | |
727 | return x; | |
728 | default: | |
729 | return NULL; | |
730 | } | |
731 | } | |
732 | ||
733 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
734 | { | |
735 | struct grep_pat *p; | |
736 | struct grep_expr *x; | |
737 | ||
738 | p = *list; | |
c922b01f LT |
739 | if (!p) |
740 | return NULL; | |
83b5d2f5 JH |
741 | switch (p->token) { |
742 | case GREP_NOT: | |
743 | if (!p->next) | |
744 | die("--not not followed by pattern expression"); | |
745 | *list = p->next; | |
746 | x = xcalloc(1, sizeof (struct grep_expr)); | |
747 | x->node = GREP_NODE_NOT; | |
748 | x->u.unary = compile_pattern_not(list); | |
749 | if (!x->u.unary) | |
750 | die("--not followed by non pattern expression"); | |
751 | return x; | |
752 | default: | |
753 | return compile_pattern_atom(list); | |
754 | } | |
755 | } | |
756 | ||
757 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
758 | { | |
759 | struct grep_pat *p; | |
760 | struct grep_expr *x, *y, *z; | |
761 | ||
762 | x = compile_pattern_not(list); | |
763 | p = *list; | |
764 | if (p && p->token == GREP_AND) { | |
765 | if (!p->next) | |
766 | die("--and not followed by pattern expression"); | |
767 | *list = p->next; | |
768 | y = compile_pattern_and(list); | |
769 | if (!y) | |
770 | die("--and not followed by pattern expression"); | |
771 | z = xcalloc(1, sizeof (struct grep_expr)); | |
772 | z->node = GREP_NODE_AND; | |
773 | z->u.binary.left = x; | |
774 | z->u.binary.right = y; | |
775 | return z; | |
776 | } | |
777 | return x; | |
778 | } | |
779 | ||
780 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
781 | { | |
782 | struct grep_pat *p; | |
783 | struct grep_expr *x, *y, *z; | |
784 | ||
785 | x = compile_pattern_and(list); | |
786 | p = *list; | |
787 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
788 | y = compile_pattern_or(list); | |
789 | if (!y) | |
790 | die("not a pattern expression %s", p->pattern); | |
791 | z = xcalloc(1, sizeof (struct grep_expr)); | |
792 | z->node = GREP_NODE_OR; | |
793 | z->u.binary.left = x; | |
794 | z->u.binary.right = y; | |
795 | return z; | |
796 | } | |
797 | return x; | |
798 | } | |
799 | ||
800 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
801 | { | |
802 | return compile_pattern_or(list); | |
803 | } | |
804 | ||
17bf35a3 JH |
805 | static void indent(int in) |
806 | { | |
807 | while (in-- > 0) | |
808 | fputc(' ', stderr); | |
809 | } | |
810 | ||
811 | static void dump_grep_pat(struct grep_pat *p) | |
812 | { | |
813 | switch (p->token) { | |
814 | case GREP_AND: fprintf(stderr, "*and*"); break; | |
815 | case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; | |
816 | case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; | |
817 | case GREP_NOT: fprintf(stderr, "*not*"); break; | |
818 | case GREP_OR: fprintf(stderr, "*or*"); break; | |
819 | ||
820 | case GREP_PATTERN: fprintf(stderr, "pattern"); break; | |
821 | case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; | |
822 | case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; | |
823 | } | |
824 | ||
825 | switch (p->token) { | |
826 | default: break; | |
827 | case GREP_PATTERN_HEAD: | |
828 | fprintf(stderr, "<head %d>", p->field); break; | |
829 | case GREP_PATTERN_BODY: | |
830 | fprintf(stderr, "<body>"); break; | |
831 | } | |
832 | switch (p->token) { | |
833 | default: break; | |
834 | case GREP_PATTERN_HEAD: | |
835 | case GREP_PATTERN_BODY: | |
836 | case GREP_PATTERN: | |
837 | fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); | |
838 | break; | |
839 | } | |
840 | fputc('\n', stderr); | |
841 | } | |
842 | ||
843 | static void dump_grep_expression_1(struct grep_expr *x, int in) | |
844 | { | |
845 | indent(in); | |
846 | switch (x->node) { | |
847 | case GREP_NODE_TRUE: | |
848 | fprintf(stderr, "true\n"); | |
849 | break; | |
850 | case GREP_NODE_ATOM: | |
851 | dump_grep_pat(x->u.atom); | |
852 | break; | |
853 | case GREP_NODE_NOT: | |
854 | fprintf(stderr, "(not\n"); | |
855 | dump_grep_expression_1(x->u.unary, in+1); | |
856 | indent(in); | |
857 | fprintf(stderr, ")\n"); | |
858 | break; | |
859 | case GREP_NODE_AND: | |
860 | fprintf(stderr, "(and\n"); | |
861 | dump_grep_expression_1(x->u.binary.left, in+1); | |
862 | dump_grep_expression_1(x->u.binary.right, in+1); | |
863 | indent(in); | |
864 | fprintf(stderr, ")\n"); | |
865 | break; | |
866 | case GREP_NODE_OR: | |
867 | fprintf(stderr, "(or\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 | } | |
874 | } | |
875 | ||
07a7d656 | 876 | static void dump_grep_expression(struct grep_opt *opt) |
17bf35a3 JH |
877 | { |
878 | struct grep_expr *x = opt->pattern_expression; | |
879 | ||
880 | if (opt->all_match) | |
881 | fprintf(stderr, "[all-match]\n"); | |
882 | dump_grep_expression_1(x, 0); | |
883 | fflush(NULL); | |
884 | } | |
885 | ||
5aaeb733 JH |
886 | static struct grep_expr *grep_true_expr(void) |
887 | { | |
888 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
889 | z->node = GREP_NODE_TRUE; | |
890 | return z; | |
891 | } | |
892 | ||
893 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) | |
894 | { | |
895 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
896 | z->node = GREP_NODE_OR; | |
897 | z->u.binary.left = left; | |
898 | z->u.binary.right = right; | |
899 | return z; | |
900 | } | |
901 | ||
95ce9ce2 | 902 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
903 | { |
904 | struct grep_pat *p; | |
95ce9ce2 | 905 | struct grep_expr *header_expr; |
5aaeb733 JH |
906 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
907 | enum grep_header_field fld; | |
83b5d2f5 | 908 | |
95ce9ce2 JH |
909 | if (!opt->header_list) |
910 | return NULL; | |
2385f246 | 911 | |
95ce9ce2 JH |
912 | for (p = opt->header_list; p; p = p->next) { |
913 | if (p->token != GREP_PATTERN_HEAD) | |
033abf97 | 914 | BUG("a non-header pattern in grep header list."); |
3ce3ffb8 AP |
915 | if (p->field < GREP_HEADER_FIELD_MIN || |
916 | GREP_HEADER_FIELD_MAX <= p->field) | |
033abf97 | 917 | BUG("unknown header field %d", p->field); |
95ce9ce2 | 918 | compile_regexp(p, opt); |
80235ba7 | 919 | } |
5aaeb733 JH |
920 | |
921 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
922 | header_group[fld] = NULL; | |
923 | ||
924 | for (p = opt->header_list; p; p = p->next) { | |
925 | struct grep_expr *h; | |
926 | struct grep_pat *pp = p; | |
927 | ||
928 | h = compile_pattern_atom(&pp); | |
929 | if (!h || pp != p->next) | |
033abf97 | 930 | BUG("malformed header expr"); |
5aaeb733 JH |
931 | if (!header_group[p->field]) { |
932 | header_group[p->field] = h; | |
933 | continue; | |
934 | } | |
935 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
936 | } | |
937 | ||
938 | header_expr = NULL; | |
939 | ||
940 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
941 | if (!header_group[fld]) | |
942 | continue; | |
943 | if (!header_expr) | |
944 | header_expr = grep_true_expr(); | |
945 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
946 | } | |
95ce9ce2 JH |
947 | return header_expr; |
948 | } | |
949 | ||
13e4fc7e JH |
950 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
951 | { | |
952 | struct grep_expr *z = x; | |
953 | ||
954 | while (x) { | |
955 | assert(x->node == GREP_NODE_OR); | |
956 | if (x->u.binary.right && | |
957 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
958 | x->u.binary.right = y; | |
959 | break; | |
960 | } | |
961 | x = x->u.binary.right; | |
962 | } | |
963 | return z; | |
964 | } | |
965 | ||
17bf35a3 | 966 | static void compile_grep_patterns_real(struct grep_opt *opt) |
95ce9ce2 JH |
967 | { |
968 | struct grep_pat *p; | |
969 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 970 | |
83b5d2f5 | 971 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
972 | switch (p->token) { |
973 | case GREP_PATTERN: /* atom */ | |
974 | case GREP_PATTERN_HEAD: | |
975 | case GREP_PATTERN_BODY: | |
c822255c | 976 | compile_regexp(p, opt); |
480c1ca6 JH |
977 | break; |
978 | default: | |
83b5d2f5 | 979 | opt->extended = 1; |
480c1ca6 JH |
980 | break; |
981 | } | |
83b5d2f5 JH |
982 | } |
983 | ||
80235ba7 JH |
984 | if (opt->all_match || header_expr) |
985 | opt->extended = 1; | |
17bf35a3 | 986 | else if (!opt->extended && !opt->debug) |
83b5d2f5 JH |
987 | return; |
988 | ||
83b5d2f5 | 989 | p = opt->pattern_list; |
ba150a3f MB |
990 | if (p) |
991 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
992 | if (p) |
993 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 JH |
994 | |
995 | if (!header_expr) | |
996 | return; | |
997 | ||
5aaeb733 | 998 | if (!opt->pattern_expression) |
80235ba7 | 999 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
1000 | else if (opt->all_match) |
1001 | opt->pattern_expression = grep_splice_or(header_expr, | |
1002 | opt->pattern_expression); | |
5aaeb733 JH |
1003 | else |
1004 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
1005 | header_expr); | |
80235ba7 | 1006 | opt->all_match = 1; |
83b5d2f5 JH |
1007 | } |
1008 | ||
17bf35a3 JH |
1009 | void compile_grep_patterns(struct grep_opt *opt) |
1010 | { | |
1011 | compile_grep_patterns_real(opt); | |
1012 | if (opt->debug) | |
1013 | dump_grep_expression(opt); | |
1014 | } | |
1015 | ||
b48fb5b6 JH |
1016 | static void free_pattern_expr(struct grep_expr *x) |
1017 | { | |
1018 | switch (x->node) { | |
5aaeb733 | 1019 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
1020 | case GREP_NODE_ATOM: |
1021 | break; | |
1022 | case GREP_NODE_NOT: | |
1023 | free_pattern_expr(x->u.unary); | |
1024 | break; | |
1025 | case GREP_NODE_AND: | |
1026 | case GREP_NODE_OR: | |
1027 | free_pattern_expr(x->u.binary.left); | |
1028 | free_pattern_expr(x->u.binary.right); | |
1029 | break; | |
1030 | } | |
1031 | free(x); | |
1032 | } | |
1033 | ||
1034 | void free_grep_patterns(struct grep_opt *opt) | |
1035 | { | |
1036 | struct grep_pat *p, *n; | |
1037 | ||
1038 | for (p = opt->pattern_list; p; p = n) { | |
1039 | n = p->next; | |
1040 | switch (p->token) { | |
1041 | case GREP_PATTERN: /* atom */ | |
1042 | case GREP_PATTERN_HEAD: | |
1043 | case GREP_PATTERN_BODY: | |
9eceddee FK |
1044 | if (p->kws) |
1045 | kwsfree(p->kws); | |
6d4b5747 ÆAB |
1046 | else if (p->pcre1_regexp) |
1047 | free_pcre1_regexp(p); | |
94da9193 ÆAB |
1048 | else if (p->pcre2_pattern) |
1049 | free_pcre2_pattern(p); | |
63e7e9d8 MK |
1050 | else |
1051 | regfree(&p->regexp); | |
526a858a | 1052 | free(p->pattern); |
b48fb5b6 JH |
1053 | break; |
1054 | default: | |
1055 | break; | |
1056 | } | |
1057 | free(p); | |
1058 | } | |
1059 | ||
1060 | if (!opt->extended) | |
1061 | return; | |
1062 | free_pattern_expr(opt->pattern_expression); | |
1063 | } | |
1064 | ||
83b5d2f5 JH |
1065 | static char *end_of_line(char *cp, unsigned long *left) |
1066 | { | |
1067 | unsigned long l = *left; | |
1068 | while (l && *cp != '\n') { | |
1069 | l--; | |
1070 | cp++; | |
1071 | } | |
1072 | *left = l; | |
1073 | return cp; | |
1074 | } | |
1075 | ||
1076 | static int word_char(char ch) | |
1077 | { | |
1078 | return isalnum(ch) || ch == '_'; | |
1079 | } | |
1080 | ||
55f638bd ML |
1081 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
1082 | const char *color) | |
1083 | { | |
daa0c3d9 | 1084 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
1085 | opt->output(opt, color, strlen(color)); |
1086 | opt->output(opt, data, size); | |
1087 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
1088 | } else | |
1089 | opt->output(opt, data, size); | |
1090 | } | |
1091 | ||
1092 | static void output_sep(struct grep_opt *opt, char sign) | |
1093 | { | |
1094 | if (opt->null_following_name) | |
1095 | opt->output(opt, "\0", 1); | |
1096 | else | |
fa151dc5 | 1097 | output_color(opt, &sign, 1, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
1098 | } |
1099 | ||
83caecca RZ |
1100 | static void show_name(struct grep_opt *opt, const char *name) |
1101 | { | |
fa151dc5 | 1102 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1103 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
1104 | } |
1105 | ||
ed40a095 RS |
1106 | static int fixmatch(struct grep_pat *p, char *line, char *eol, |
1107 | regmatch_t *match) | |
83b5d2f5 | 1108 | { |
9eceddee FK |
1109 | struct kwsmatch kwsm; |
1110 | size_t offset = kwsexec(p->kws, line, eol - line, &kwsm); | |
1111 | if (offset == -1) { | |
83b5d2f5 JH |
1112 | match->rm_so = match->rm_eo = -1; |
1113 | return REG_NOMATCH; | |
9eceddee FK |
1114 | } else { |
1115 | match->rm_so = offset; | |
1116 | match->rm_eo = match->rm_so + kwsm.size[0]; | |
83b5d2f5 JH |
1117 | return 0; |
1118 | } | |
1119 | } | |
1120 | ||
97e77784 MK |
1121 | static int patmatch(struct grep_pat *p, char *line, char *eol, |
1122 | regmatch_t *match, int eflags) | |
1123 | { | |
1124 | int hit; | |
1125 | ||
1126 | if (p->fixed) | |
1127 | hit = !fixmatch(p, line, eol, match); | |
6d4b5747 ÆAB |
1128 | else if (p->pcre1_regexp) |
1129 | hit = !pcre1match(p, line, eol, match, eflags); | |
94da9193 ÆAB |
1130 | else if (p->pcre2_pattern) |
1131 | hit = !pcre2match(p, line, eol, match, eflags); | |
97e77784 | 1132 | else |
b7d36ffc JS |
1133 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
1134 | eflags); | |
97e77784 MK |
1135 | |
1136 | return hit; | |
1137 | } | |
1138 | ||
a4d7d2c6 JH |
1139 | static int strip_timestamp(char *bol, char **eol_p) |
1140 | { | |
1141 | char *eol = *eol_p; | |
1142 | int ch; | |
1143 | ||
1144 | while (bol < --eol) { | |
1145 | if (*eol != '>') | |
1146 | continue; | |
1147 | *eol_p = ++eol; | |
1148 | ch = *eol; | |
1149 | *eol = '\0'; | |
1150 | return ch; | |
1151 | } | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | static struct { | |
1156 | const char *field; | |
1157 | size_t len; | |
1158 | } header_field[] = { | |
1159 | { "author ", 7 }, | |
1160 | { "committer ", 10 }, | |
72fd13f7 | 1161 | { "reflog ", 7 }, |
a4d7d2c6 JH |
1162 | }; |
1163 | ||
d7eb527d | 1164 | static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, |
79212772 RS |
1165 | enum grep_context ctx, |
1166 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
1167 | { |
1168 | int hit = 0; | |
a4d7d2c6 | 1169 | int saved_ch = 0; |
e701fadb | 1170 | const char *start = bol; |
83b5d2f5 | 1171 | |
480c1ca6 JH |
1172 | if ((p->token != GREP_PATTERN) && |
1173 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
1174 | return 0; | |
1175 | ||
a4d7d2c6 JH |
1176 | if (p->token == GREP_PATTERN_HEAD) { |
1177 | const char *field; | |
1178 | size_t len; | |
1179 | assert(p->field < ARRAY_SIZE(header_field)); | |
1180 | field = header_field[p->field].field; | |
1181 | len = header_field[p->field].len; | |
1182 | if (strncmp(bol, field, len)) | |
1183 | return 0; | |
1184 | bol += len; | |
ad4813b3 NTND |
1185 | switch (p->field) { |
1186 | case GREP_HEADER_AUTHOR: | |
1187 | case GREP_HEADER_COMMITTER: | |
1188 | saved_ch = strip_timestamp(bol, &eol); | |
1189 | break; | |
1190 | default: | |
1191 | break; | |
1192 | } | |
a4d7d2c6 JH |
1193 | } |
1194 | ||
83b5d2f5 | 1195 | again: |
97e77784 | 1196 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 1197 | |
d7eb527d | 1198 | if (hit && p->word_regexp) { |
83b5d2f5 | 1199 | if ((pmatch[0].rm_so < 0) || |
84201eae | 1200 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
1201 | (pmatch[0].rm_eo < 0) || |
1202 | (eol - bol) < pmatch[0].rm_eo) | |
1203 | die("regexp returned nonsense"); | |
1204 | ||
1205 | /* Match beginning must be either beginning of the | |
1206 | * line, or at word boundary (i.e. the last char must | |
1207 | * not be a word char). Similarly, match end must be | |
1208 | * either end of the line, or at word boundary | |
1209 | * (i.e. the next char must not be a word char). | |
1210 | */ | |
fb62eb7f | 1211 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
1212 | !word_char(bol[pmatch[0].rm_so-1])) && |
1213 | ((pmatch[0].rm_eo == (eol-bol)) || | |
1214 | !word_char(bol[pmatch[0].rm_eo])) ) | |
1215 | ; | |
1216 | else | |
1217 | hit = 0; | |
1218 | ||
84201eae RS |
1219 | /* Words consist of at least one character. */ |
1220 | if (pmatch->rm_so == pmatch->rm_eo) | |
1221 | hit = 0; | |
1222 | ||
83b5d2f5 JH |
1223 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
1224 | /* There could be more than one match on the | |
1225 | * line, and the first match might not be | |
1226 | * strict word match. But later ones could be! | |
fb62eb7f RS |
1227 | * Forward to the next possible start, i.e. the |
1228 | * next position following a non-word char. | |
83b5d2f5 JH |
1229 | */ |
1230 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
1231 | while (word_char(bol[-1]) && bol < eol) |
1232 | bol++; | |
dbb6a4ad | 1233 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
1234 | if (bol < eol) |
1235 | goto again; | |
83b5d2f5 JH |
1236 | } |
1237 | } | |
a4d7d2c6 JH |
1238 | if (p->token == GREP_PATTERN_HEAD && saved_ch) |
1239 | *eol = saved_ch; | |
e701fadb RS |
1240 | if (hit) { |
1241 | pmatch[0].rm_so += bol - start; | |
1242 | pmatch[0].rm_eo += bol - start; | |
1243 | } | |
83b5d2f5 JH |
1244 | return hit; |
1245 | } | |
1246 | ||
d7eb527d RS |
1247 | static int match_expr_eval(struct grep_expr *x, char *bol, char *eol, |
1248 | enum grep_context ctx, int collect_hits) | |
83b5d2f5 | 1249 | { |
0ab7befa | 1250 | int h = 0; |
79212772 | 1251 | regmatch_t match; |
0ab7befa | 1252 | |
c922b01f LT |
1253 | if (!x) |
1254 | die("Not a valid grep expression"); | |
83b5d2f5 | 1255 | switch (x->node) { |
5aaeb733 JH |
1256 | case GREP_NODE_TRUE: |
1257 | h = 1; | |
1258 | break; | |
83b5d2f5 | 1259 | case GREP_NODE_ATOM: |
79212772 | 1260 | h = match_one_pattern(x->u.atom, bol, eol, ctx, &match, 0); |
83b5d2f5 JH |
1261 | break; |
1262 | case GREP_NODE_NOT: | |
d7eb527d | 1263 | h = !match_expr_eval(x->u.unary, bol, eol, ctx, 0); |
0ab7befa | 1264 | break; |
83b5d2f5 | 1265 | case GREP_NODE_AND: |
d7eb527d | 1266 | if (!match_expr_eval(x->u.binary.left, bol, eol, ctx, 0)) |
252d560d | 1267 | return 0; |
d7eb527d | 1268 | h = match_expr_eval(x->u.binary.right, bol, eol, ctx, 0); |
0ab7befa | 1269 | break; |
83b5d2f5 | 1270 | case GREP_NODE_OR: |
0ab7befa | 1271 | if (!collect_hits) |
d7eb527d | 1272 | return (match_expr_eval(x->u.binary.left, |
0ab7befa | 1273 | bol, eol, ctx, 0) || |
d7eb527d | 1274 | match_expr_eval(x->u.binary.right, |
0ab7befa | 1275 | bol, eol, ctx, 0)); |
d7eb527d | 1276 | h = match_expr_eval(x->u.binary.left, bol, eol, ctx, 0); |
0ab7befa | 1277 | x->u.binary.left->hit |= h; |
d7eb527d | 1278 | h |= match_expr_eval(x->u.binary.right, bol, eol, ctx, 1); |
0ab7befa JH |
1279 | break; |
1280 | default: | |
d7530708 | 1281 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1282 | } |
0ab7befa JH |
1283 | if (collect_hits) |
1284 | x->hit |= h; | |
1285 | return h; | |
83b5d2f5 JH |
1286 | } |
1287 | ||
480c1ca6 | 1288 | static int match_expr(struct grep_opt *opt, char *bol, char *eol, |
0ab7befa | 1289 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1290 | { |
1291 | struct grep_expr *x = opt->pattern_expression; | |
d7eb527d | 1292 | return match_expr_eval(x, bol, eol, ctx, collect_hits); |
83b5d2f5 JH |
1293 | } |
1294 | ||
480c1ca6 | 1295 | static int match_line(struct grep_opt *opt, char *bol, char *eol, |
0ab7befa | 1296 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1297 | { |
1298 | struct grep_pat *p; | |
79212772 RS |
1299 | regmatch_t match; |
1300 | ||
83b5d2f5 | 1301 | if (opt->extended) |
0ab7befa JH |
1302 | return match_expr(opt, bol, eol, ctx, collect_hits); |
1303 | ||
1304 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1305 | for (p = opt->pattern_list; p; p = p->next) { |
79212772 | 1306 | if (match_one_pattern(p, bol, eol, ctx, &match, 0)) |
83b5d2f5 JH |
1307 | return 1; |
1308 | } | |
1309 | return 0; | |
1310 | } | |
1311 | ||
7e8f59d5 RS |
1312 | static int match_next_pattern(struct grep_pat *p, char *bol, char *eol, |
1313 | enum grep_context ctx, | |
1314 | regmatch_t *pmatch, int eflags) | |
1315 | { | |
1316 | regmatch_t match; | |
1317 | ||
1318 | if (!match_one_pattern(p, bol, eol, ctx, &match, eflags)) | |
1319 | return 0; | |
1320 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1321 | return 0; | |
1322 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1323 | if (match.rm_so > pmatch->rm_so) | |
1324 | return 1; | |
1325 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1326 | return 1; | |
1327 | } | |
1328 | pmatch->rm_so = match.rm_so; | |
1329 | pmatch->rm_eo = match.rm_eo; | |
1330 | return 1; | |
1331 | } | |
1332 | ||
1333 | static int next_match(struct grep_opt *opt, char *bol, char *eol, | |
1334 | enum grep_context ctx, regmatch_t *pmatch, int eflags) | |
1335 | { | |
1336 | struct grep_pat *p; | |
1337 | int hit = 0; | |
1338 | ||
1339 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1340 | if (bol < eol) { | |
1341 | for (p = opt->pattern_list; p; p = p->next) { | |
1342 | switch (p->token) { | |
1343 | case GREP_PATTERN: /* atom */ | |
1344 | case GREP_PATTERN_HEAD: | |
1345 | case GREP_PATTERN_BODY: | |
1346 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1347 | pmatch, eflags); | |
1348 | break; | |
1349 | default: | |
1350 | break; | |
1351 | } | |
1352 | } | |
1353 | } | |
1354 | return hit; | |
1355 | } | |
1356 | ||
1357 | static void show_line(struct grep_opt *opt, char *bol, char *eol, | |
1358 | const char *name, unsigned lno, char sign) | |
1359 | { | |
1360 | int rest = eol - bol; | |
79a77109 | 1361 | const char *match_color, *line_color = NULL; |
7e8f59d5 | 1362 | |
a8f0e764 RS |
1363 | if (opt->file_break && opt->last_shown == 0) { |
1364 | if (opt->show_hunk_mark) | |
1365 | opt->output(opt, "\n", 1); | |
ba8ea749 | 1366 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { |
046802d0 | 1367 | if (opt->last_shown == 0) { |
55f638bd | 1368 | if (opt->show_hunk_mark) { |
fa151dc5 | 1369 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
55f638bd | 1370 | opt->output(opt, "\n", 1); |
07b838f0 | 1371 | } |
55f638bd | 1372 | } else if (lno > opt->last_shown + 1) { |
fa151dc5 | 1373 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
1374 | opt->output(opt, "\n", 1); |
1375 | } | |
5dd06d38 | 1376 | } |
1d84f72e | 1377 | if (opt->heading && opt->last_shown == 0) { |
fa151dc5 | 1378 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
1d84f72e RS |
1379 | opt->output(opt, "\n", 1); |
1380 | } | |
5dd06d38 RS |
1381 | opt->last_shown = lno; |
1382 | ||
1d84f72e | 1383 | if (!opt->heading && opt->pathname) { |
fa151dc5 | 1384 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
55f638bd | 1385 | output_sep(opt, sign); |
5b594f45 FK |
1386 | } |
1387 | if (opt->linenum) { | |
1388 | char buf[32]; | |
1a168e5c | 1389 | xsnprintf(buf, sizeof(buf), "%d", lno); |
fa151dc5 | 1390 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]); |
55f638bd | 1391 | output_sep(opt, sign); |
5b594f45 | 1392 | } |
7e8f59d5 RS |
1393 | if (opt->color) { |
1394 | regmatch_t match; | |
1395 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
1396 | int ch = *eol; | |
1397 | int eflags = 0; | |
1398 | ||
79a77109 | 1399 | if (sign == ':') |
fa151dc5 | 1400 | match_color = opt->colors[GREP_COLOR_MATCH_SELECTED]; |
79a77109 | 1401 | else |
fa151dc5 | 1402 | match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT]; |
00588bb5 | 1403 | if (sign == ':') |
fa151dc5 | 1404 | line_color = opt->colors[GREP_COLOR_SELECTED]; |
00588bb5 | 1405 | else if (sign == '-') |
fa151dc5 | 1406 | line_color = opt->colors[GREP_COLOR_CONTEXT]; |
00588bb5 | 1407 | else if (sign == '=') |
fa151dc5 | 1408 | line_color = opt->colors[GREP_COLOR_FUNCTION]; |
7e8f59d5 RS |
1409 | *eol = '\0'; |
1410 | while (next_match(opt, bol, eol, ctx, &match, eflags)) { | |
1f5b9cc4 RS |
1411 | if (match.rm_so == match.rm_eo) |
1412 | break; | |
5b594f45 | 1413 | |
00588bb5 | 1414 | output_color(opt, bol, match.rm_so, line_color); |
55f638bd | 1415 | output_color(opt, bol + match.rm_so, |
79a77109 | 1416 | match.rm_eo - match.rm_so, match_color); |
7e8f59d5 RS |
1417 | bol += match.rm_eo; |
1418 | rest -= match.rm_eo; | |
1419 | eflags = REG_NOTBOL; | |
1420 | } | |
1421 | *eol = ch; | |
1422 | } | |
00588bb5 | 1423 | output_color(opt, bol, rest, line_color); |
5b594f45 | 1424 | opt->output(opt, "\n", 1); |
7e8f59d5 RS |
1425 | } |
1426 | ||
0579f91d | 1427 | #ifndef NO_PTHREADS |
78db6ea9 JK |
1428 | int grep_use_locks; |
1429 | ||
0579f91d TR |
1430 | /* |
1431 | * This lock protects access to the gitattributes machinery, which is | |
1432 | * not thread-safe. | |
1433 | */ | |
1434 | pthread_mutex_t grep_attr_mutex; | |
1435 | ||
78db6ea9 | 1436 | static inline void grep_attr_lock(void) |
0579f91d | 1437 | { |
78db6ea9 | 1438 | if (grep_use_locks) |
0579f91d TR |
1439 | pthread_mutex_lock(&grep_attr_mutex); |
1440 | } | |
1441 | ||
78db6ea9 | 1442 | static inline void grep_attr_unlock(void) |
0579f91d | 1443 | { |
78db6ea9 | 1444 | if (grep_use_locks) |
0579f91d TR |
1445 | pthread_mutex_unlock(&grep_attr_mutex); |
1446 | } | |
b3aeb285 JK |
1447 | |
1448 | /* | |
1449 | * Same as git_attr_mutex, but protecting the thread-unsafe object db access. | |
1450 | */ | |
1451 | pthread_mutex_t grep_read_mutex; | |
1452 | ||
0579f91d | 1453 | #else |
78db6ea9 JK |
1454 | #define grep_attr_lock() |
1455 | #define grep_attr_unlock() | |
0579f91d TR |
1456 | #endif |
1457 | ||
e1327023 | 1458 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, char *bol, char *eol) |
2944e4e6 | 1459 | { |
60ecac98 | 1460 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1461 | if (xecfg && !xecfg->find_func) { |
94ad9d9e JK |
1462 | grep_source_load_driver(gs); |
1463 | if (gs->driver->funcname.pattern) { | |
1464 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1465 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1466 | } else { | |
1467 | xecfg = opt->priv = NULL; | |
1468 | } | |
1469 | } | |
1470 | ||
1471 | if (xecfg) { | |
60ecac98 RS |
1472 | char buf[1]; |
1473 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1474 | xecfg->find_func_priv) >= 0; | |
1475 | } | |
1476 | ||
2944e4e6 RS |
1477 | if (bol == eol) |
1478 | return 0; | |
1479 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1480 | return 1; | |
1481 | return 0; | |
1482 | } | |
1483 | ||
e1327023 JK |
1484 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1485 | char *bol, unsigned lno) | |
2944e4e6 | 1486 | { |
e1327023 | 1487 | while (bol > gs->buf) { |
2944e4e6 RS |
1488 | char *eol = --bol; |
1489 | ||
e1327023 | 1490 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1491 | bol--; |
1492 | lno--; | |
1493 | ||
1494 | if (lno <= opt->last_shown) | |
1495 | break; | |
1496 | ||
e1327023 JK |
1497 | if (match_funcname(opt, gs, bol, eol)) { |
1498 | show_line(opt, bol, eol, gs->name, lno, '='); | |
2944e4e6 RS |
1499 | break; |
1500 | } | |
1501 | } | |
1502 | } | |
1503 | ||
a5dc20b0 RS |
1504 | static int is_empty_line(const char *bol, const char *eol); |
1505 | ||
e1327023 | 1506 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
ba8ea749 | 1507 | char *bol, char *end, unsigned lno) |
49de3216 | 1508 | { |
6653a01b | 1509 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1510 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1511 | |
49de3216 RS |
1512 | if (opt->pre_context < lno) |
1513 | from = lno - opt->pre_context; | |
1514 | if (from <= opt->last_shown) | |
1515 | from = opt->last_shown + 1; | |
6653a01b | 1516 | orig_from = from; |
a5dc20b0 RS |
1517 | if (opt->funcbody) { |
1518 | if (match_funcname(opt, gs, bol, end)) | |
1519 | comment_needed = 1; | |
1520 | else | |
1521 | funcname_needed = 1; | |
6653a01b RS |
1522 | from = opt->last_shown + 1; |
1523 | } | |
49de3216 RS |
1524 | |
1525 | /* Rewind. */ | |
6653a01b | 1526 | while (bol > gs->buf && cur > from) { |
a5dc20b0 | 1527 | char *next_bol = bol; |
2944e4e6 RS |
1528 | char *eol = --bol; |
1529 | ||
e1327023 | 1530 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1531 | bol--; |
1532 | cur--; | |
a5dc20b0 RS |
1533 | if (comment_needed && (is_empty_line(bol, eol) || |
1534 | match_funcname(opt, gs, bol, eol))) { | |
1535 | comment_needed = 0; | |
1536 | from = orig_from; | |
1537 | if (cur < from) { | |
1538 | cur++; | |
1539 | bol = next_bol; | |
1540 | break; | |
1541 | } | |
1542 | } | |
e1327023 | 1543 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1544 | funcname_lno = cur; |
1545 | funcname_needed = 0; | |
a5dc20b0 RS |
1546 | if (opt->funcbody) |
1547 | comment_needed = 1; | |
1548 | else | |
1549 | from = orig_from; | |
2944e4e6 | 1550 | } |
49de3216 RS |
1551 | } |
1552 | ||
2944e4e6 RS |
1553 | /* We need to look even further back to find a function signature. */ |
1554 | if (opt->funcname && funcname_needed) | |
e1327023 | 1555 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1556 | |
49de3216 RS |
1557 | /* Back forward. */ |
1558 | while (cur < lno) { | |
2944e4e6 | 1559 | char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1560 | |
1561 | while (*eol != '\n') | |
1562 | eol++; | |
e1327023 | 1563 | show_line(opt, bol, eol, gs->name, cur, sign); |
49de3216 RS |
1564 | bol = eol + 1; |
1565 | cur++; | |
1566 | } | |
1567 | } | |
1568 | ||
a26345b6 JH |
1569 | static int should_lookahead(struct grep_opt *opt) |
1570 | { | |
1571 | struct grep_pat *p; | |
1572 | ||
1573 | if (opt->extended) | |
1574 | return 0; /* punt for too complex stuff */ | |
1575 | if (opt->invert) | |
1576 | return 0; | |
1577 | for (p = opt->pattern_list; p; p = p->next) { | |
1578 | if (p->token != GREP_PATTERN) | |
1579 | return 0; /* punt for "header only" and stuff */ | |
1580 | } | |
1581 | return 1; | |
1582 | } | |
1583 | ||
1584 | static int look_ahead(struct grep_opt *opt, | |
1585 | unsigned long *left_p, | |
1586 | unsigned *lno_p, | |
1587 | char **bol_p) | |
1588 | { | |
1589 | unsigned lno = *lno_p; | |
1590 | char *bol = *bol_p; | |
1591 | struct grep_pat *p; | |
1592 | char *sp, *last_bol; | |
1593 | regoff_t earliest = -1; | |
1594 | ||
1595 | for (p = opt->pattern_list; p; p = p->next) { | |
1596 | int hit; | |
1597 | regmatch_t m; | |
1598 | ||
97e77784 | 1599 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1600 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1601 | continue; | |
1602 | if (earliest < 0 || m.rm_so < earliest) | |
1603 | earliest = m.rm_so; | |
1604 | } | |
1605 | ||
1606 | if (earliest < 0) { | |
1607 | *bol_p = bol + *left_p; | |
1608 | *left_p = 0; | |
1609 | return 1; | |
1610 | } | |
1611 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1612 | ; /* find the beginning of the line */ | |
1613 | last_bol = sp; | |
1614 | ||
1615 | for (sp = bol; sp < last_bol; sp++) { | |
1616 | if (*sp == '\n') | |
1617 | lno++; | |
1618 | } | |
1619 | *left_p -= last_bol - bol; | |
1620 | *bol_p = last_bol; | |
1621 | *lno_p = lno; | |
1622 | return 0; | |
1623 | } | |
1624 | ||
335ec3bf JK |
1625 | static int fill_textconv_grep(struct userdiff_driver *driver, |
1626 | struct grep_source *gs) | |
1627 | { | |
1628 | struct diff_filespec *df; | |
1629 | char *buf; | |
1630 | size_t size; | |
1631 | ||
1632 | if (!driver || !driver->textconv) | |
1633 | return grep_source_load(gs); | |
1634 | ||
1635 | /* | |
1636 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1637 | * have to pretend to be one. If we could unify the grep_source | |
1638 | * and diff_filespec structs, this mess could just go away. | |
1639 | */ | |
1640 | df = alloc_filespec(gs->path); | |
1641 | switch (gs->type) { | |
1c41c82b | 1642 | case GREP_SOURCE_OID: |
335ec3bf JK |
1643 | fill_filespec(df, gs->identifier, 1, 0100644); |
1644 | break; | |
1645 | case GREP_SOURCE_FILE: | |
f9704c2d | 1646 | fill_filespec(df, &null_oid, 0, 0100644); |
335ec3bf JK |
1647 | break; |
1648 | default: | |
033abf97 | 1649 | BUG("attempt to textconv something without a path?"); |
335ec3bf JK |
1650 | } |
1651 | ||
1652 | /* | |
1653 | * fill_textconv is not remotely thread-safe; it may load objects | |
1654 | * behind the scenes, and it modifies the global diff tempfile | |
1655 | * structure. | |
1656 | */ | |
1657 | grep_read_lock(); | |
1658 | size = fill_textconv(driver, df, &buf); | |
1659 | grep_read_unlock(); | |
1660 | free_filespec(df); | |
1661 | ||
1662 | /* | |
1663 | * The normal fill_textconv usage by the diff machinery would just keep | |
1664 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1665 | * grep code passes around a grep_source and assumes that its "buf" | |
1666 | * pointer is the beginning of the thing we are searching. So let's | |
1667 | * install our textconv'd version into the grep_source, taking care not | |
1668 | * to leak any existing buffer. | |
1669 | */ | |
1670 | grep_source_clear_data(gs); | |
1671 | gs->buf = buf; | |
1672 | gs->size = size; | |
1673 | ||
1674 | return 0; | |
1675 | } | |
1676 | ||
4aa2c475 RS |
1677 | static int is_empty_line(const char *bol, const char *eol) |
1678 | { | |
1679 | while (bol < eol && isspace(*bol)) | |
1680 | bol++; | |
1681 | return bol == eol; | |
1682 | } | |
1683 | ||
e1327023 | 1684 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1685 | { |
e1327023 | 1686 | char *bol; |
4aa2c475 | 1687 | char *peek_bol = NULL; |
e1327023 | 1688 | unsigned long left; |
83b5d2f5 | 1689 | unsigned lno = 1; |
83b5d2f5 | 1690 | unsigned last_hit = 0; |
83b5d2f5 | 1691 | int binary_match_only = 0; |
83b5d2f5 | 1692 | unsigned count = 0; |
a26345b6 | 1693 | int try_lookahead = 0; |
ba8ea749 | 1694 | int show_function = 0; |
335ec3bf | 1695 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1696 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1697 | xdemitconf_t xecfg; |
83b5d2f5 | 1698 | |
5b594f45 FK |
1699 | if (!opt->output) |
1700 | opt->output = std_output; | |
1701 | ||
ba8ea749 RS |
1702 | if (opt->pre_context || opt->post_context || opt->file_break || |
1703 | opt->funcbody) { | |
08303c36 RS |
1704 | /* Show hunk marks, except for the first file. */ |
1705 | if (opt->last_shown) | |
1706 | opt->show_hunk_mark = 1; | |
1707 | /* | |
1708 | * If we're using threads then we can't easily identify | |
1709 | * the first file. Always put hunk marks in that case | |
1710 | * and skip the very first one later in work_done(). | |
1711 | */ | |
1712 | if (opt->output != std_output) | |
1713 | opt->show_hunk_mark = 1; | |
1714 | } | |
431d6e7b RS |
1715 | opt->last_shown = 0; |
1716 | ||
335ec3bf JK |
1717 | if (opt->allow_textconv) { |
1718 | grep_source_load_driver(gs); | |
1719 | /* | |
1720 | * We might set up the shared textconv cache data here, which | |
1721 | * is not thread-safe. | |
1722 | */ | |
1723 | grep_attr_lock(); | |
1724 | textconv = userdiff_get_textconv(gs->driver); | |
1725 | grep_attr_unlock(); | |
1726 | } | |
1727 | ||
1728 | /* | |
1729 | * We know the result of a textconv is text, so we only have to care | |
1730 | * about binary handling if we are not using it. | |
1731 | */ | |
1732 | if (!textconv) { | |
1733 | switch (opt->binary) { | |
1734 | case GREP_BINARY_DEFAULT: | |
1735 | if (grep_source_is_binary(gs)) | |
1736 | binary_match_only = 1; | |
1737 | break; | |
1738 | case GREP_BINARY_NOMATCH: | |
1739 | if (grep_source_is_binary(gs)) | |
1740 | return 0; /* Assume unmatch */ | |
1741 | break; | |
1742 | case GREP_BINARY_TEXT: | |
1743 | break; | |
1744 | default: | |
033abf97 | 1745 | BUG("unknown binary handling mode"); |
335ec3bf | 1746 | } |
83b5d2f5 JH |
1747 | } |
1748 | ||
60ecac98 | 1749 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1750 | opt->priv = &xecfg; |
1751 | ||
a26345b6 | 1752 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1753 | |
335ec3bf | 1754 | if (fill_textconv_grep(textconv, gs) < 0) |
08265798 JK |
1755 | return 0; |
1756 | ||
e1327023 JK |
1757 | bol = gs->buf; |
1758 | left = gs->size; | |
83b5d2f5 JH |
1759 | while (left) { |
1760 | char *eol, ch; | |
0ab7befa | 1761 | int hit; |
83b5d2f5 | 1762 | |
a26345b6 | 1763 | /* |
8997da38 | 1764 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1765 | * has the next hit; don't call it if we need to do |
1766 | * something more than just skipping the current line | |
1767 | * in response to an unmatch for the current line. E.g. | |
1768 | * inside a post-context window, we will show the current | |
1769 | * line as a context around the previous hit when it | |
1770 | * doesn't hit. | |
1771 | */ | |
1772 | if (try_lookahead | |
1773 | && !(last_hit | |
ba8ea749 RS |
1774 | && (show_function || |
1775 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1776 | && look_ahead(opt, &left, &lno, &bol)) |
1777 | break; | |
83b5d2f5 JH |
1778 | eol = end_of_line(bol, &left); |
1779 | ch = *eol; | |
1780 | *eol = 0; | |
1781 | ||
480c1ca6 JH |
1782 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1783 | ctx = GREP_CONTEXT_BODY; | |
1784 | ||
0ab7befa | 1785 | hit = match_line(opt, bol, eol, ctx, collect_hits); |
83b5d2f5 JH |
1786 | *eol = ch; |
1787 | ||
0ab7befa JH |
1788 | if (collect_hits) |
1789 | goto next_line; | |
1790 | ||
83b5d2f5 JH |
1791 | /* "grep -v -e foo -e bla" should list lines |
1792 | * that do not have either, so inversion should | |
1793 | * be done outside. | |
1794 | */ | |
1795 | if (opt->invert) | |
1796 | hit = !hit; | |
1797 | if (opt->unmatch_name_only) { | |
1798 | if (hit) | |
1799 | return 0; | |
1800 | goto next_line; | |
1801 | } | |
1802 | if (hit) { | |
1803 | count++; | |
1804 | if (opt->status_only) | |
1805 | return 1; | |
321ffcc0 | 1806 | if (opt->name_only) { |
e1327023 | 1807 | show_name(opt, gs->name); |
321ffcc0 RS |
1808 | return 1; |
1809 | } | |
c30c10cf RS |
1810 | if (opt->count) |
1811 | goto next_line; | |
83b5d2f5 | 1812 | if (binary_match_only) { |
5b594f45 | 1813 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1814 | output_color(opt, gs->name, strlen(gs->name), |
fa151dc5 | 1815 | opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1816 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1817 | return 1; |
1818 | } | |
83b5d2f5 JH |
1819 | /* Hit at this line. If we haven't shown the |
1820 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1821 | */ |
ba8ea749 | 1822 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1823 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1824 | else if (opt->funcname) |
e1327023 JK |
1825 | show_funcname_line(opt, gs, bol, lno); |
1826 | show_line(opt, bol, eol, gs->name, lno, ':'); | |
5dd06d38 | 1827 | last_hit = lno; |
ba8ea749 RS |
1828 | if (opt->funcbody) |
1829 | show_function = 1; | |
1830 | goto next_line; | |
83b5d2f5 | 1831 | } |
4aa2c475 RS |
1832 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1833 | unsigned long peek_left = left; | |
1834 | char *peek_eol = eol; | |
1835 | ||
1836 | /* | |
1837 | * Trailing empty lines are not interesting. | |
1838 | * Peek past them to see if they belong to the | |
1839 | * body of the current function. | |
1840 | */ | |
1841 | peek_bol = bol; | |
1842 | while (is_empty_line(peek_bol, peek_eol)) { | |
1843 | peek_bol = peek_eol + 1; | |
1844 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1845 | } | |
1846 | ||
1847 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1848 | show_function = 0; | |
1849 | } | |
ba8ea749 RS |
1850 | if (show_function || |
1851 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1852 | /* If the last hit is within the post context, |
1853 | * we need to show this line. | |
1854 | */ | |
e1327023 | 1855 | show_line(opt, bol, eol, gs->name, lno, '-'); |
83b5d2f5 | 1856 | } |
83b5d2f5 JH |
1857 | |
1858 | next_line: | |
1859 | bol = eol + 1; | |
1860 | if (!left) | |
1861 | break; | |
1862 | left--; | |
1863 | lno++; | |
1864 | } | |
1865 | ||
0ab7befa JH |
1866 | if (collect_hits) |
1867 | return 0; | |
b48fb5b6 | 1868 | |
83b5d2f5 | 1869 | if (opt->status_only) |
e1f68c66 | 1870 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1871 | if (opt->unmatch_name_only) { |
1872 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1873 | show_name(opt, gs->name); |
83b5d2f5 JH |
1874 | return 1; |
1875 | } | |
1876 | ||
60ecac98 RS |
1877 | xdiff_clear_find_func(&xecfg); |
1878 | opt->priv = NULL; | |
1879 | ||
83b5d2f5 JH |
1880 | /* NEEDSWORK: |
1881 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1882 | * which feels mostly useless but sometimes useful. Maybe | |
1883 | * make it another option? For now suppress them. | |
1884 | */ | |
5b594f45 FK |
1885 | if (opt->count && count) { |
1886 | char buf[32]; | |
f76d947a RS |
1887 | if (opt->pathname) { |
1888 | output_color(opt, gs->name, strlen(gs->name), | |
fa151dc5 | 1889 | opt->colors[GREP_COLOR_FILENAME]); |
f76d947a RS |
1890 | output_sep(opt, ':'); |
1891 | } | |
1a168e5c | 1892 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 1893 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 1894 | return 1; |
5b594f45 | 1895 | } |
83b5d2f5 JH |
1896 | return !!last_hit; |
1897 | } | |
1898 | ||
0ab7befa JH |
1899 | static void clr_hit_marker(struct grep_expr *x) |
1900 | { | |
1901 | /* All-hit markers are meaningful only at the very top level | |
1902 | * OR node. | |
1903 | */ | |
1904 | while (1) { | |
1905 | x->hit = 0; | |
1906 | if (x->node != GREP_NODE_OR) | |
1907 | return; | |
1908 | x->u.binary.left->hit = 0; | |
1909 | x = x->u.binary.right; | |
1910 | } | |
1911 | } | |
1912 | ||
1913 | static int chk_hit_marker(struct grep_expr *x) | |
1914 | { | |
1915 | /* Top level nodes have hit markers. See if they all are hits */ | |
1916 | while (1) { | |
1917 | if (x->node != GREP_NODE_OR) | |
1918 | return x->hit; | |
1919 | if (!x->u.binary.left->hit) | |
1920 | return 0; | |
1921 | x = x->u.binary.right; | |
1922 | } | |
1923 | } | |
1924 | ||
e1327023 | 1925 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
1926 | { |
1927 | /* | |
1928 | * we do not have to do the two-pass grep when we do not check | |
1929 | * buffer-wide "all-match". | |
1930 | */ | |
1931 | if (!opt->all_match) | |
e1327023 | 1932 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
1933 | |
1934 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
1935 | * We first clear hit markers from them. | |
1936 | */ | |
1937 | clr_hit_marker(opt->pattern_expression); | |
e1327023 | 1938 | grep_source_1(opt, gs, 1); |
0ab7befa JH |
1939 | |
1940 | if (!chk_hit_marker(opt->pattern_expression)) | |
1941 | return 0; | |
1942 | ||
e1327023 JK |
1943 | return grep_source_1(opt, gs, 0); |
1944 | } | |
1945 | ||
c876d6da | 1946 | int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) |
e1327023 JK |
1947 | { |
1948 | struct grep_source gs; | |
1949 | int r; | |
1950 | ||
55c61688 | 1951 | grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); |
e1327023 JK |
1952 | gs.buf = buf; |
1953 | gs.size = size; | |
1954 | ||
1955 | r = grep_source(opt, &gs); | |
1956 | ||
1957 | grep_source_clear(&gs); | |
1958 | return r; | |
1959 | } | |
1960 | ||
1961 | void grep_source_init(struct grep_source *gs, enum grep_source_type type, | |
55c61688 NTND |
1962 | const char *name, const char *path, |
1963 | const void *identifier) | |
e1327023 JK |
1964 | { |
1965 | gs->type = type; | |
8c53f071 JK |
1966 | gs->name = xstrdup_or_null(name); |
1967 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
1968 | gs->buf = NULL; |
1969 | gs->size = 0; | |
94ad9d9e | 1970 | gs->driver = NULL; |
e1327023 JK |
1971 | |
1972 | switch (type) { | |
1973 | case GREP_SOURCE_FILE: | |
1974 | gs->identifier = xstrdup(identifier); | |
1975 | break; | |
1c41c82b BW |
1976 | case GREP_SOURCE_OID: |
1977 | gs->identifier = oiddup(identifier); | |
e1327023 JK |
1978 | break; |
1979 | case GREP_SOURCE_BUF: | |
1980 | gs->identifier = NULL; | |
4538eef5 | 1981 | break; |
e1327023 JK |
1982 | } |
1983 | } | |
1984 | ||
1985 | void grep_source_clear(struct grep_source *gs) | |
1986 | { | |
88ce3ef6 ÆAB |
1987 | FREE_AND_NULL(gs->name); |
1988 | FREE_AND_NULL(gs->path); | |
1989 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
1990 | grep_source_clear_data(gs); |
1991 | } | |
1992 | ||
1993 | void grep_source_clear_data(struct grep_source *gs) | |
1994 | { | |
1995 | switch (gs->type) { | |
1996 | case GREP_SOURCE_FILE: | |
1c41c82b | 1997 | case GREP_SOURCE_OID: |
6a83d902 | 1998 | FREE_AND_NULL(gs->buf); |
e1327023 JK |
1999 | gs->size = 0; |
2000 | break; | |
2001 | case GREP_SOURCE_BUF: | |
2002 | /* leave user-provided buf intact */ | |
2003 | break; | |
2004 | } | |
2005 | } | |
2006 | ||
1c41c82b | 2007 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
2008 | { |
2009 | enum object_type type; | |
2010 | ||
2011 | grep_read_lock(); | |
b4f5aca4 | 2012 | gs->buf = read_object_file(gs->identifier, &type, &gs->size); |
e1327023 JK |
2013 | grep_read_unlock(); |
2014 | ||
2015 | if (!gs->buf) | |
2016 | return error(_("'%s': unable to read %s"), | |
2017 | gs->name, | |
1c41c82b | 2018 | oid_to_hex(gs->identifier)); |
e1327023 JK |
2019 | return 0; |
2020 | } | |
2021 | ||
2022 | static int grep_source_load_file(struct grep_source *gs) | |
2023 | { | |
2024 | const char *filename = gs->identifier; | |
2025 | struct stat st; | |
2026 | char *data; | |
2027 | size_t size; | |
2028 | int i; | |
2029 | ||
2030 | if (lstat(filename, &st) < 0) { | |
2031 | err_ret: | |
2032 | if (errno != ENOENT) | |
7645d8f1 | 2033 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
2034 | return -1; |
2035 | } | |
2036 | if (!S_ISREG(st.st_mode)) | |
2037 | return -1; | |
2038 | size = xsize_t(st.st_size); | |
2039 | i = open(filename, O_RDONLY); | |
2040 | if (i < 0) | |
2041 | goto err_ret; | |
3733e694 | 2042 | data = xmallocz(size); |
e1327023 | 2043 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 2044 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
2045 | close(i); |
2046 | free(data); | |
2047 | return -1; | |
2048 | } | |
2049 | close(i); | |
e1327023 JK |
2050 | |
2051 | gs->buf = data; | |
2052 | gs->size = size; | |
2053 | return 0; | |
2054 | } | |
2055 | ||
3083301e | 2056 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
2057 | { |
2058 | if (gs->buf) | |
2059 | return 0; | |
2060 | ||
2061 | switch (gs->type) { | |
2062 | case GREP_SOURCE_FILE: | |
2063 | return grep_source_load_file(gs); | |
1c41c82b BW |
2064 | case GREP_SOURCE_OID: |
2065 | return grep_source_load_oid(gs); | |
e1327023 JK |
2066 | case GREP_SOURCE_BUF: |
2067 | return gs->buf ? 0 : -1; | |
2068 | } | |
033abf97 | 2069 | BUG("invalid grep_source type to load"); |
0ab7befa | 2070 | } |
94ad9d9e JK |
2071 | |
2072 | void grep_source_load_driver(struct grep_source *gs) | |
2073 | { | |
2074 | if (gs->driver) | |
2075 | return; | |
2076 | ||
2077 | grep_attr_lock(); | |
55c61688 NTND |
2078 | if (gs->path) |
2079 | gs->driver = userdiff_find_by_path(gs->path); | |
94ad9d9e JK |
2080 | if (!gs->driver) |
2081 | gs->driver = userdiff_find_by_name("default"); | |
2082 | grep_attr_unlock(); | |
2083 | } | |
41b59bfc | 2084 | |
3083301e | 2085 | static int grep_source_is_binary(struct grep_source *gs) |
41b59bfc JK |
2086 | { |
2087 | grep_source_load_driver(gs); | |
2088 | if (gs->driver->binary != -1) | |
2089 | return gs->driver->binary; | |
2090 | ||
2091 | if (!grep_source_load(gs)) | |
2092 | return buffer_is_binary(gs->buf, gs->size); | |
2093 | ||
2094 | return 0; | |
2095 | } |