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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 | 13 | static int grep_source_load(struct grep_source *gs); |
acd00ea0 NTND |
14 | static int grep_source_is_binary(struct grep_source *gs, |
15 | struct index_state *istate); | |
07a7d656 | 16 | |
96313423 MÅ |
17 | static void std_output(struct grep_opt *opt, const void *buf, size_t size) |
18 | { | |
19 | fwrite(buf, size, 1, stdout); | |
20 | } | |
21 | ||
22 | static struct grep_opt grep_defaults = { | |
23 | .relative = 1, | |
24 | .pathname = 1, | |
25 | .max_depth = -1, | |
26 | .pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED, | |
27 | .colors = { | |
28 | [GREP_COLOR_CONTEXT] = "", | |
29 | [GREP_COLOR_FILENAME] = "", | |
30 | [GREP_COLOR_FUNCTION] = "", | |
31 | [GREP_COLOR_LINENO] = "", | |
32 | [GREP_COLOR_COLUMNNO] = "", | |
33 | [GREP_COLOR_MATCH_CONTEXT] = GIT_COLOR_BOLD_RED, | |
34 | [GREP_COLOR_MATCH_SELECTED] = GIT_COLOR_BOLD_RED, | |
35 | [GREP_COLOR_SELECTED] = "", | |
36 | [GREP_COLOR_SEP] = GIT_COLOR_CYAN, | |
37 | }, | |
38 | .only_matching = 0, | |
39 | .color = -1, | |
40 | .output = std_output, | |
41 | }; | |
7687a054 | 42 | |
513f2b0b CMAB |
43 | #ifdef USE_LIBPCRE2 |
44 | static pcre2_general_context *pcre2_global_context; | |
45 | ||
46 | static void *pcre2_malloc(PCRE2_SIZE size, MAYBE_UNUSED void *memory_data) | |
47 | { | |
48 | return malloc(size); | |
49 | } | |
50 | ||
51 | static void pcre2_free(void *pointer, MAYBE_UNUSED void *memory_data) | |
52 | { | |
867fc7f3 | 53 | free(pointer); |
513f2b0b CMAB |
54 | } |
55 | #endif | |
56 | ||
fa151dc5 NTND |
57 | static const char *color_grep_slots[] = { |
58 | [GREP_COLOR_CONTEXT] = "context", | |
59 | [GREP_COLOR_FILENAME] = "filename", | |
60 | [GREP_COLOR_FUNCTION] = "function", | |
61 | [GREP_COLOR_LINENO] = "lineNumber", | |
d036d667 | 62 | [GREP_COLOR_COLUMNNO] = "column", |
fa151dc5 NTND |
63 | [GREP_COLOR_MATCH_CONTEXT] = "matchContext", |
64 | [GREP_COLOR_MATCH_SELECTED] = "matchSelected", | |
65 | [GREP_COLOR_SELECTED] = "selected", | |
66 | [GREP_COLOR_SEP] = "separator", | |
67 | }; | |
68 | ||
7687a054 JH |
69 | static int parse_pattern_type_arg(const char *opt, const char *arg) |
70 | { | |
71 | if (!strcmp(arg, "default")) | |
72 | return GREP_PATTERN_TYPE_UNSPECIFIED; | |
73 | else if (!strcmp(arg, "basic")) | |
74 | return GREP_PATTERN_TYPE_BRE; | |
75 | else if (!strcmp(arg, "extended")) | |
76 | return GREP_PATTERN_TYPE_ERE; | |
77 | else if (!strcmp(arg, "fixed")) | |
78 | return GREP_PATTERN_TYPE_FIXED; | |
79 | else if (!strcmp(arg, "perl")) | |
80 | return GREP_PATTERN_TYPE_PCRE; | |
81 | die("bad %s argument: %s", opt, arg); | |
82 | } | |
83 | ||
3ac68a93 NTND |
84 | define_list_config_array_extra(color_grep_slots, {"match"}); |
85 | ||
7687a054 JH |
86 | /* |
87 | * Read the configuration file once and store it in | |
88 | * the grep_defaults template. | |
89 | */ | |
90 | int grep_config(const char *var, const char *value, void *cb) | |
91 | { | |
92 | struct grep_opt *opt = &grep_defaults; | |
fa151dc5 | 93 | const char *slot; |
7687a054 JH |
94 | |
95 | if (userdiff_config(var, value) < 0) | |
96 | return -1; | |
97 | ||
6ba9bb76 MÅ |
98 | /* |
99 | * The instance of grep_opt that we set up here is copied by | |
100 | * grep_init() to be used by each individual invocation. | |
101 | * When populating a new field of this structure here, be | |
102 | * sure to think about ownership -- e.g., you might need to | |
103 | * override the shallow copy in grep_init() with a deep copy. | |
104 | */ | |
105 | ||
7687a054 | 106 | if (!strcmp(var, "grep.extendedregexp")) { |
c7e38551 | 107 | opt->extended_regexp_option = git_config_bool(var, value); |
7687a054 JH |
108 | return 0; |
109 | } | |
110 | ||
111 | if (!strcmp(var, "grep.patterntype")) { | |
112 | opt->pattern_type_option = parse_pattern_type_arg(var, value); | |
113 | return 0; | |
114 | } | |
115 | ||
116 | if (!strcmp(var, "grep.linenumber")) { | |
117 | opt->linenum = git_config_bool(var, value); | |
118 | return 0; | |
119 | } | |
6653fec3 TB |
120 | if (!strcmp(var, "grep.column")) { |
121 | opt->columnnum = git_config_bool(var, value); | |
122 | return 0; | |
123 | } | |
7687a054 | 124 | |
6453f7b3 AS |
125 | if (!strcmp(var, "grep.fullname")) { |
126 | opt->relative = !git_config_bool(var, value); | |
127 | return 0; | |
128 | } | |
129 | ||
7687a054 JH |
130 | if (!strcmp(var, "color.grep")) |
131 | opt->color = git_config_colorbool(var, value); | |
fa151dc5 NTND |
132 | if (!strcmp(var, "color.grep.match")) { |
133 | if (grep_config("color.grep.matchcontext", value, cb) < 0) | |
134 | return -1; | |
135 | if (grep_config("color.grep.matchselected", value, cb) < 0) | |
136 | return -1; | |
137 | } else if (skip_prefix(var, "color.grep.", &slot)) { | |
138 | int i = LOOKUP_CONFIG(color_grep_slots, slot); | |
139 | char *color; | |
140 | ||
141 | if (i < 0) | |
142 | return -1; | |
143 | color = opt->colors[i]; | |
7687a054 JH |
144 | if (!value) |
145 | return config_error_nonbool(var); | |
f6c5a296 | 146 | return color_parse(value, color); |
7687a054 JH |
147 | } |
148 | return 0; | |
149 | } | |
150 | ||
151 | /* | |
152 | * Initialize one instance of grep_opt and copy the | |
153 | * default values from the template we read the configuration | |
154 | * information in an earlier call to git_config(grep_config). | |
57d46604 CMAB |
155 | * |
156 | * If using PCRE, make sure that the library is configured | |
157 | * to use the same allocator as Git (e.g. nedmalloc on Windows). | |
513f2b0b CMAB |
158 | * |
159 | * Any allocated memory needs to be released in grep_destroy(). | |
7687a054 | 160 | */ |
38bbc2ea | 161 | void grep_init(struct grep_opt *opt, struct repository *repo, const char *prefix) |
7687a054 | 162 | { |
513f2b0b CMAB |
163 | #if defined(USE_LIBPCRE2) |
164 | if (!pcre2_global_context) | |
165 | pcre2_global_context = pcre2_general_context_create( | |
166 | pcre2_malloc, pcre2_free, NULL); | |
167 | #endif | |
168 | ||
57d46604 CMAB |
169 | #ifdef USE_LIBPCRE1 |
170 | pcre_malloc = malloc; | |
171 | pcre_free = free; | |
172 | #endif | |
173 | ||
6ba9bb76 MÅ |
174 | *opt = grep_defaults; |
175 | ||
38bbc2ea | 176 | opt->repo = repo; |
7687a054 JH |
177 | opt->prefix = prefix; |
178 | opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; | |
179 | opt->pattern_tail = &opt->pattern_list; | |
180 | opt->header_tail = &opt->header_list; | |
7687a054 | 181 | } |
07a7d656 | 182 | |
513f2b0b CMAB |
183 | void grep_destroy(void) |
184 | { | |
185 | #ifdef USE_LIBPCRE2 | |
186 | pcre2_general_context_free(pcre2_global_context); | |
187 | #endif | |
188 | } | |
189 | ||
8465541e | 190 | static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
c5c31d33 | 191 | { |
07a3d411 ÆAB |
192 | /* |
193 | * When committing to the pattern type by setting the relevant | |
194 | * fields in grep_opt it's generally not necessary to zero out | |
195 | * the fields we're not choosing, since they won't have been | |
196 | * set by anything. The extended_regexp_option field is the | |
197 | * only exception to this. | |
198 | * | |
199 | * This is because in the process of parsing grep.patternType | |
200 | * & grep.extendedRegexp we set opt->pattern_type_option and | |
201 | * opt->extended_regexp_option, respectively. We then | |
202 | * internally use opt->extended_regexp_option to see if we're | |
203 | * compiling an ERE. It must be unset if that's not actually | |
204 | * the case. | |
205 | */ | |
206 | if (pattern_type != GREP_PATTERN_TYPE_ERE && | |
207 | opt->extended_regexp_option) | |
208 | opt->extended_regexp_option = 0; | |
209 | ||
c5c31d33 JH |
210 | switch (pattern_type) { |
211 | case GREP_PATTERN_TYPE_UNSPECIFIED: | |
212 | /* fall through */ | |
213 | ||
214 | case GREP_PATTERN_TYPE_BRE: | |
c5c31d33 JH |
215 | break; |
216 | ||
217 | case GREP_PATTERN_TYPE_ERE: | |
07a3d411 | 218 | opt->extended_regexp_option = 1; |
c5c31d33 JH |
219 | break; |
220 | ||
221 | case GREP_PATTERN_TYPE_FIXED: | |
222 | opt->fixed = 1; | |
c5c31d33 JH |
223 | break; |
224 | ||
225 | case GREP_PATTERN_TYPE_PCRE: | |
94da9193 | 226 | #ifdef USE_LIBPCRE2 |
94da9193 ÆAB |
227 | opt->pcre2 = 1; |
228 | #else | |
229 | /* | |
230 | * It's important that pcre1 always be assigned to | |
231 | * even when there's no USE_LIBPCRE* defined. We still | |
232 | * call the PCRE stub function, it just dies with | |
233 | * "cannot use Perl-compatible regexes[...]". | |
234 | */ | |
6d4b5747 | 235 | opt->pcre1 = 1; |
94da9193 | 236 | #endif |
c5c31d33 JH |
237 | break; |
238 | } | |
239 | } | |
240 | ||
8465541e JH |
241 | void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
242 | { | |
243 | if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) | |
244 | grep_set_pattern_type_option(pattern_type, opt); | |
245 | else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) | |
246 | grep_set_pattern_type_option(opt->pattern_type_option, opt); | |
247 | else if (opt->extended_regexp_option) | |
07a3d411 ÆAB |
248 | /* |
249 | * This branch *must* happen after setting from the | |
250 | * opt->pattern_type_option above, we don't want | |
251 | * grep.extendedRegexp to override grep.patternType! | |
252 | */ | |
8465541e JH |
253 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); |
254 | } | |
255 | ||
fc456751 RS |
256 | static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, |
257 | const char *origin, int no, | |
258 | enum grep_pat_token t, | |
259 | enum grep_header_field field) | |
a4d7d2c6 JH |
260 | { |
261 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
526a858a | 262 | p->pattern = xmemdupz(pat, patlen); |
fc456751 RS |
263 | p->patternlen = patlen; |
264 | p->origin = origin; | |
265 | p->no = no; | |
266 | p->token = t; | |
a4d7d2c6 | 267 | p->field = field; |
fc456751 RS |
268 | return p; |
269 | } | |
270 | ||
2b3873ff RS |
271 | static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p) |
272 | { | |
273 | **tail = p; | |
274 | *tail = &p->next; | |
a4d7d2c6 | 275 | p->next = NULL; |
526a858a RS |
276 | |
277 | switch (p->token) { | |
278 | case GREP_PATTERN: /* atom */ | |
279 | case GREP_PATTERN_HEAD: | |
280 | case GREP_PATTERN_BODY: | |
281 | for (;;) { | |
282 | struct grep_pat *new_pat; | |
283 | size_t len = 0; | |
284 | char *cp = p->pattern + p->patternlen, *nl = NULL; | |
285 | while (++len <= p->patternlen) { | |
286 | if (*(--cp) == '\n') { | |
287 | nl = cp; | |
288 | break; | |
289 | } | |
290 | } | |
291 | if (!nl) | |
292 | break; | |
293 | new_pat = create_grep_pat(nl + 1, len - 1, p->origin, | |
294 | p->no, p->token, p->field); | |
295 | new_pat->next = p->next; | |
296 | if (!p->next) | |
297 | *tail = &new_pat->next; | |
298 | p->next = new_pat; | |
299 | *nl = '\0'; | |
300 | p->patternlen -= len; | |
301 | } | |
302 | break; | |
303 | default: | |
304 | break; | |
305 | } | |
2b3873ff RS |
306 | } |
307 | ||
fc456751 RS |
308 | void append_header_grep_pattern(struct grep_opt *opt, |
309 | enum grep_header_field field, const char *pat) | |
310 | { | |
311 | struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, | |
312 | GREP_PATTERN_HEAD, field); | |
baa6378f JH |
313 | if (field == GREP_HEADER_REFLOG) |
314 | opt->use_reflog_filter = 1; | |
2b3873ff | 315 | do_append_grep_pat(&opt->header_tail, p); |
a4d7d2c6 JH |
316 | } |
317 | ||
83b5d2f5 JH |
318 | void append_grep_pattern(struct grep_opt *opt, const char *pat, |
319 | const char *origin, int no, enum grep_pat_token t) | |
ed40a095 RS |
320 | { |
321 | append_grep_pat(opt, pat, strlen(pat), origin, no, t); | |
322 | } | |
323 | ||
324 | void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, | |
325 | const char *origin, int no, enum grep_pat_token t) | |
83b5d2f5 | 326 | { |
fc456751 | 327 | struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0); |
2b3873ff | 328 | do_append_grep_pat(&opt->pattern_tail, p); |
83b5d2f5 JH |
329 | } |
330 | ||
5b594f45 FK |
331 | struct grep_opt *grep_opt_dup(const struct grep_opt *opt) |
332 | { | |
333 | struct grep_pat *pat; | |
334 | struct grep_opt *ret = xmalloc(sizeof(struct grep_opt)); | |
335 | *ret = *opt; | |
336 | ||
337 | ret->pattern_list = NULL; | |
338 | ret->pattern_tail = &ret->pattern_list; | |
339 | ||
340 | for(pat = opt->pattern_list; pat != NULL; pat = pat->next) | |
341 | { | |
342 | if(pat->token == GREP_PATTERN_HEAD) | |
343 | append_header_grep_pattern(ret, pat->field, | |
344 | pat->pattern); | |
345 | else | |
ed40a095 RS |
346 | append_grep_pat(ret, pat->pattern, pat->patternlen, |
347 | pat->origin, pat->no, pat->token); | |
5b594f45 FK |
348 | } |
349 | ||
350 | return ret; | |
351 | } | |
352 | ||
a30c148a MK |
353 | static NORETURN void compile_regexp_failed(const struct grep_pat *p, |
354 | const char *error) | |
355 | { | |
356 | char where[1024]; | |
357 | ||
358 | if (p->no) | |
19bdd3e7 | 359 | xsnprintf(where, sizeof(where), "In '%s' at %d, ", p->origin, p->no); |
a30c148a | 360 | else if (p->origin) |
19bdd3e7 | 361 | xsnprintf(where, sizeof(where), "%s, ", p->origin); |
a30c148a MK |
362 | else |
363 | where[0] = 0; | |
364 | ||
365 | die("%s'%s': %s", where, p->pattern, error); | |
366 | } | |
367 | ||
543f1c0c ÆAB |
368 | static int is_fixed(const char *s, size_t len) |
369 | { | |
370 | size_t i; | |
371 | ||
372 | for (i = 0; i < len; i++) { | |
373 | if (is_regex_special(s[i])) | |
374 | return 0; | |
375 | } | |
376 | ||
377 | return 1; | |
378 | } | |
379 | ||
3485bea1 | 380 | #ifdef USE_LIBPCRE1 |
6d4b5747 | 381 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
382 | { |
383 | const char *error; | |
384 | int erroffset; | |
fba4f125 | 385 | int options = PCRE_MULTILINE; |
ff61681b | 386 | int study_options = 0; |
63e7e9d8 | 387 | |
9d9babb8 | 388 | if (opt->ignore_case) { |
44570188 | 389 | if (!opt->ignore_locale && has_non_ascii(p->pattern)) |
6d4b5747 | 390 | p->pcre1_tables = pcre_maketables(); |
63e7e9d8 | 391 | options |= PCRE_CASELESS; |
9d9babb8 | 392 | } |
44570188 | 393 | if (!opt->ignore_locale && is_utf8_locale() && has_non_ascii(p->pattern)) |
18547aac | 394 | options |= PCRE_UTF8; |
63e7e9d8 | 395 | |
6d4b5747 ÆAB |
396 | p->pcre1_regexp = pcre_compile(p->pattern, options, &error, &erroffset, |
397 | p->pcre1_tables); | |
398 | if (!p->pcre1_regexp) | |
63e7e9d8 MK |
399 | compile_regexp_failed(p, error); |
400 | ||
ff61681b | 401 | #if defined(PCRE_CONFIG_JIT) && !defined(NO_LIBPCRE1_JIT) |
fbaceaac | 402 | pcre_config(PCRE_CONFIG_JIT, &p->pcre1_jit_on); |
c581e4a7 BB |
403 | if (opt->debug) |
404 | fprintf(stderr, "pcre1_jit_on=%d\n", p->pcre1_jit_on); | |
ff61681b CMAB |
405 | |
406 | if (p->pcre1_jit_on) | |
407 | study_options = PCRE_STUDY_JIT_COMPILE; | |
fbaceaac | 408 | #endif |
ff61681b CMAB |
409 | |
410 | p->pcre1_extra_info = pcre_study(p->pcre1_regexp, study_options, &error); | |
411 | if (!p->pcre1_extra_info && error) | |
412 | die("%s", error); | |
63e7e9d8 MK |
413 | } |
414 | ||
6d4b5747 | 415 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
416 | regmatch_t *match, int eflags) |
417 | { | |
ad7c543e | 418 | int ovector[30], ret, flags = PCRE_NO_UTF8_CHECK; |
63e7e9d8 MK |
419 | |
420 | if (eflags & REG_NOTBOL) | |
421 | flags |= PCRE_NOTBOL; | |
422 | ||
685668fa ÆAB |
423 | ret = pcre_exec(p->pcre1_regexp, p->pcre1_extra_info, line, |
424 | eol - line, 0, flags, ovector, | |
425 | ARRAY_SIZE(ovector)); | |
fbaceaac | 426 | |
63e7e9d8 MK |
427 | if (ret < 0 && ret != PCRE_ERROR_NOMATCH) |
428 | die("pcre_exec failed with error code %d", ret); | |
429 | if (ret > 0) { | |
430 | ret = 0; | |
431 | match->rm_so = ovector[0]; | |
432 | match->rm_eo = ovector[1]; | |
433 | } | |
434 | ||
435 | return ret; | |
436 | } | |
437 | ||
6d4b5747 | 438 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 | 439 | { |
6d4b5747 | 440 | pcre_free(p->pcre1_regexp); |
ff61681b | 441 | #ifdef PCRE_CONFIG_JIT |
685668fa | 442 | if (p->pcre1_jit_on) |
fbaceaac | 443 | pcre_free_study(p->pcre1_extra_info); |
685668fa | 444 | else |
fbaceaac | 445 | #endif |
fbaceaac | 446 | pcre_free(p->pcre1_extra_info); |
6d4b5747 | 447 | pcre_free((void *)p->pcre1_tables); |
63e7e9d8 | 448 | } |
3485bea1 | 449 | #else /* !USE_LIBPCRE1 */ |
6d4b5747 | 450 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
451 | { |
452 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
453 | } | |
454 | ||
6d4b5747 | 455 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
456 | regmatch_t *match, int eflags) |
457 | { | |
458 | return 1; | |
459 | } | |
460 | ||
6d4b5747 | 461 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 MK |
462 | { |
463 | } | |
3485bea1 | 464 | #endif /* !USE_LIBPCRE1 */ |
63e7e9d8 | 465 | |
94da9193 ÆAB |
466 | #ifdef USE_LIBPCRE2 |
467 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
468 | { | |
469 | int error; | |
470 | PCRE2_UCHAR errbuf[256]; | |
471 | PCRE2_SIZE erroffset; | |
472 | int options = PCRE2_MULTILINE; | |
94da9193 | 473 | int jitret; |
a25b9085 ÆAB |
474 | int patinforet; |
475 | size_t jitsizearg; | |
94da9193 ÆAB |
476 | |
477 | assert(opt->pcre2); | |
478 | ||
479 | p->pcre2_compile_context = NULL; | |
480 | ||
513f2b0b | 481 | /* pcre2_global_context is initialized in append_grep_pattern */ |
94da9193 | 482 | if (opt->ignore_case) { |
44570188 | 483 | if (!opt->ignore_locale && has_non_ascii(p->pattern)) { |
513f2b0b CMAB |
484 | if (!pcre2_global_context) |
485 | BUG("pcre2_global_context uninitialized"); | |
10da030a | 486 | p->pcre2_tables = pcre2_maketables(pcre2_global_context); |
94da9193 | 487 | p->pcre2_compile_context = pcre2_compile_context_create(NULL); |
10da030a CMAB |
488 | pcre2_set_character_tables(p->pcre2_compile_context, |
489 | p->pcre2_tables); | |
94da9193 ÆAB |
490 | } |
491 | options |= PCRE2_CASELESS; | |
492 | } | |
870eea81 ÆAB |
493 | if (!opt->ignore_locale && is_utf8_locale() && has_non_ascii(p->pattern) && |
494 | !(!opt->ignore_case && (p->fixed || p->is_fixed))) | |
94da9193 ÆAB |
495 | options |= PCRE2_UTF; |
496 | ||
497 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
498 | p->patternlen, options, &error, &erroffset, | |
499 | p->pcre2_compile_context); | |
500 | ||
501 | if (p->pcre2_pattern) { | |
502 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL); | |
503 | if (!p->pcre2_match_data) | |
504 | die("Couldn't allocate PCRE2 match data"); | |
505 | } else { | |
506 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
507 | compile_regexp_failed(p, (const char *)&errbuf); | |
508 | } | |
509 | ||
510 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
c581e4a7 BB |
511 | if (opt->debug) |
512 | fprintf(stderr, "pcre2_jit_on=%d\n", p->pcre2_jit_on); | |
04bef50c | 513 | if (p->pcre2_jit_on) { |
94da9193 ÆAB |
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; | |
c581e4a7 BB |
538 | if (opt->debug) |
539 | fprintf(stderr, "pcre2_jit_on=%d: (*NO_JIT) in regex\n", | |
540 | p->pcre2_jit_on); | |
a25b9085 ÆAB |
541 | return; |
542 | } | |
94da9193 ÆAB |
543 | } |
544 | } | |
545 | ||
546 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
547 | regmatch_t *match, int eflags) | |
548 | { | |
549 | int ret, flags = 0; | |
550 | PCRE2_SIZE *ovector; | |
551 | PCRE2_UCHAR errbuf[256]; | |
552 | ||
553 | if (eflags & REG_NOTBOL) | |
554 | flags |= PCRE2_NOTBOL; | |
555 | ||
556 | if (p->pcre2_jit_on) | |
557 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
558 | eol - line, 0, flags, p->pcre2_match_data, | |
559 | NULL); | |
560 | else | |
561 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
562 | eol - line, 0, flags, p->pcre2_match_data, | |
563 | NULL); | |
564 | ||
565 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
566 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
567 | die("%s failed with error code %d: %s", | |
568 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
569 | errbuf); | |
570 | } | |
571 | if (ret > 0) { | |
572 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
573 | ret = 0; | |
574 | match->rm_so = (int)ovector[0]; | |
575 | match->rm_eo = (int)ovector[1]; | |
576 | } | |
577 | ||
578 | return ret; | |
579 | } | |
580 | ||
581 | static void free_pcre2_pattern(struct grep_pat *p) | |
582 | { | |
583 | pcre2_compile_context_free(p->pcre2_compile_context); | |
584 | pcre2_code_free(p->pcre2_pattern); | |
585 | pcre2_match_data_free(p->pcre2_match_data); | |
10da030a | 586 | free((void *)p->pcre2_tables); |
94da9193 ÆAB |
587 | } |
588 | #else /* !USE_LIBPCRE2 */ | |
589 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
590 | { | |
591 | /* | |
592 | * Unreachable until USE_LIBPCRE2 becomes synonymous with | |
593 | * USE_LIBPCRE. See the sibling comment in | |
594 | * grep_set_pattern_type_option(). | |
595 | */ | |
596 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
597 | } | |
598 | ||
599 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
600 | regmatch_t *match, int eflags) | |
601 | { | |
602 | return 1; | |
603 | } | |
604 | ||
605 | static void free_pcre2_pattern(struct grep_pat *p) | |
606 | { | |
607 | } | |
94da9193 | 608 | |
793dc676 NTND |
609 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
610 | { | |
611 | struct strbuf sb = STRBUF_INIT; | |
612 | int err; | |
1ceababc | 613 | int regflags = 0; |
793dc676 NTND |
614 | |
615 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
616 | if (opt->ignore_case) |
617 | regflags |= REG_ICASE; | |
618 | err = regcomp(&p->regexp, sb.buf, regflags); | |
619 | if (opt->debug) | |
620 | fprintf(stderr, "fixed %s\n", sb.buf); | |
621 | strbuf_release(&sb); | |
622 | if (err) { | |
623 | char errbuf[1024]; | |
624 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
793dc676 NTND |
625 | compile_regexp_failed(p, errbuf); |
626 | } | |
627 | } | |
b65abcaf | 628 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 629 | |
83b5d2f5 JH |
630 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
631 | { | |
c822255c | 632 | int err; |
07a3d411 | 633 | int regflags = REG_NEWLINE; |
c822255c | 634 | |
d7eb527d | 635 | p->word_regexp = opt->word_regexp; |
5183bf67 | 636 | p->ignore_case = opt->ignore_case; |
48de2a76 | 637 | p->fixed = opt->fixed; |
d7eb527d | 638 | |
45d1f37c ÆAB |
639 | if (memchr(p->pattern, 0, p->patternlen) && !opt->pcre2) |
640 | die(_("given pattern contains NULL byte (via -f <file>). This is only supported with -P under PCRE v2")); | |
641 | ||
09872f64 | 642 | p->is_fixed = is_fixed(p->pattern, p->patternlen); |
8a599983 ÆAB |
643 | #ifdef USE_LIBPCRE2 |
644 | if (!p->fixed && !p->is_fixed) { | |
645 | const char *no_jit = "(*NO_JIT)"; | |
646 | const int no_jit_len = strlen(no_jit); | |
647 | if (starts_with(p->pattern, no_jit) && | |
648 | is_fixed(p->pattern + no_jit_len, | |
649 | p->patternlen - no_jit_len)) | |
650 | p->is_fixed = 1; | |
651 | } | |
652 | #endif | |
09872f64 | 653 | if (p->fixed || p->is_fixed) { |
b65abcaf ÆAB |
654 | #ifdef USE_LIBPCRE2 |
655 | opt->pcre2 = 1; | |
09872f64 | 656 | if (p->is_fixed) { |
b65abcaf ÆAB |
657 | compile_pcre2_pattern(p, opt); |
658 | } else { | |
659 | /* | |
660 | * E.g. t7811-grep-open.sh relies on the | |
661 | * pattern being restored. | |
662 | */ | |
663 | char *old_pattern = p->pattern; | |
664 | size_t old_patternlen = p->patternlen; | |
665 | struct strbuf sb = STRBUF_INIT; | |
666 | ||
667 | /* | |
668 | * There is the PCRE2_LITERAL flag, but it's | |
669 | * only in PCRE v2 10.30 and later. Needing to | |
670 | * ifdef our way around that and dealing with | |
671 | * it + PCRE2_MULTILINE being an error is more | |
672 | * complex than just quoting this ourselves. | |
673 | */ | |
674 | strbuf_add(&sb, "\\Q", 2); | |
675 | strbuf_add(&sb, p->pattern, p->patternlen); | |
676 | strbuf_add(&sb, "\\E", 2); | |
677 | ||
678 | p->pattern = sb.buf; | |
679 | p->patternlen = sb.len; | |
680 | compile_pcre2_pattern(p, opt); | |
681 | p->pattern = old_pattern; | |
682 | p->patternlen = old_patternlen; | |
683 | strbuf_release(&sb); | |
684 | } | |
685 | #else /* !USE_LIBPCRE2 */ | |
793dc676 | 686 | compile_fixed_regexp(p, opt); |
b65abcaf | 687 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 688 | return; |
9eceddee | 689 | } |
c822255c | 690 | |
94da9193 ÆAB |
691 | if (opt->pcre2) { |
692 | compile_pcre2_pattern(p, opt); | |
693 | return; | |
694 | } | |
695 | ||
6d4b5747 ÆAB |
696 | if (opt->pcre1) { |
697 | compile_pcre1_regexp(p, opt); | |
63e7e9d8 MK |
698 | return; |
699 | } | |
700 | ||
07a3d411 ÆAB |
701 | if (p->ignore_case) |
702 | regflags |= REG_ICASE; | |
703 | if (opt->extended_regexp_option) | |
704 | regflags |= REG_EXTENDED; | |
705 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
706 | if (err) { |
707 | char errbuf[1024]; | |
83b5d2f5 | 708 | regerror(err, &p->regexp, errbuf, 1024); |
a30c148a | 709 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
710 | } |
711 | } | |
712 | ||
0ab7befa | 713 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
714 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
715 | { | |
716 | struct grep_pat *p; | |
717 | struct grep_expr *x; | |
718 | ||
719 | p = *list; | |
c922b01f LT |
720 | if (!p) |
721 | return NULL; | |
83b5d2f5 JH |
722 | switch (p->token) { |
723 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
724 | case GREP_PATTERN_HEAD: |
725 | case GREP_PATTERN_BODY: | |
83b5d2f5 JH |
726 | x = xcalloc(1, sizeof (struct grep_expr)); |
727 | x->node = GREP_NODE_ATOM; | |
728 | x->u.atom = p; | |
729 | *list = p->next; | |
730 | return x; | |
731 | case GREP_OPEN_PAREN: | |
732 | *list = p->next; | |
0ab7befa | 733 | x = compile_pattern_or(list); |
83b5d2f5 JH |
734 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
735 | die("unmatched parenthesis"); | |
736 | *list = (*list)->next; | |
737 | return x; | |
738 | default: | |
739 | return NULL; | |
740 | } | |
741 | } | |
742 | ||
743 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
744 | { | |
745 | struct grep_pat *p; | |
746 | struct grep_expr *x; | |
747 | ||
748 | p = *list; | |
c922b01f LT |
749 | if (!p) |
750 | return NULL; | |
83b5d2f5 JH |
751 | switch (p->token) { |
752 | case GREP_NOT: | |
753 | if (!p->next) | |
754 | die("--not not followed by pattern expression"); | |
755 | *list = p->next; | |
756 | x = xcalloc(1, sizeof (struct grep_expr)); | |
757 | x->node = GREP_NODE_NOT; | |
758 | x->u.unary = compile_pattern_not(list); | |
759 | if (!x->u.unary) | |
760 | die("--not followed by non pattern expression"); | |
761 | return x; | |
762 | default: | |
763 | return compile_pattern_atom(list); | |
764 | } | |
765 | } | |
766 | ||
767 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
768 | { | |
769 | struct grep_pat *p; | |
770 | struct grep_expr *x, *y, *z; | |
771 | ||
772 | x = compile_pattern_not(list); | |
773 | p = *list; | |
774 | if (p && p->token == GREP_AND) { | |
775 | if (!p->next) | |
776 | die("--and not followed by pattern expression"); | |
777 | *list = p->next; | |
778 | y = compile_pattern_and(list); | |
779 | if (!y) | |
780 | die("--and not followed by pattern expression"); | |
781 | z = xcalloc(1, sizeof (struct grep_expr)); | |
782 | z->node = GREP_NODE_AND; | |
783 | z->u.binary.left = x; | |
784 | z->u.binary.right = y; | |
785 | return z; | |
786 | } | |
787 | return x; | |
788 | } | |
789 | ||
790 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
791 | { | |
792 | struct grep_pat *p; | |
793 | struct grep_expr *x, *y, *z; | |
794 | ||
795 | x = compile_pattern_and(list); | |
796 | p = *list; | |
797 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
798 | y = compile_pattern_or(list); | |
799 | if (!y) | |
800 | die("not a pattern expression %s", p->pattern); | |
801 | z = xcalloc(1, sizeof (struct grep_expr)); | |
802 | z->node = GREP_NODE_OR; | |
803 | z->u.binary.left = x; | |
804 | z->u.binary.right = y; | |
805 | return z; | |
806 | } | |
807 | return x; | |
808 | } | |
809 | ||
810 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
811 | { | |
812 | return compile_pattern_or(list); | |
813 | } | |
814 | ||
17bf35a3 JH |
815 | static void indent(int in) |
816 | { | |
817 | while (in-- > 0) | |
818 | fputc(' ', stderr); | |
819 | } | |
820 | ||
821 | static void dump_grep_pat(struct grep_pat *p) | |
822 | { | |
823 | switch (p->token) { | |
824 | case GREP_AND: fprintf(stderr, "*and*"); break; | |
825 | case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; | |
826 | case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; | |
827 | case GREP_NOT: fprintf(stderr, "*not*"); break; | |
828 | case GREP_OR: fprintf(stderr, "*or*"); break; | |
829 | ||
830 | case GREP_PATTERN: fprintf(stderr, "pattern"); break; | |
831 | case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; | |
832 | case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; | |
833 | } | |
834 | ||
835 | switch (p->token) { | |
836 | default: break; | |
837 | case GREP_PATTERN_HEAD: | |
838 | fprintf(stderr, "<head %d>", p->field); break; | |
839 | case GREP_PATTERN_BODY: | |
840 | fprintf(stderr, "<body>"); break; | |
841 | } | |
842 | switch (p->token) { | |
843 | default: break; | |
844 | case GREP_PATTERN_HEAD: | |
845 | case GREP_PATTERN_BODY: | |
846 | case GREP_PATTERN: | |
847 | fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); | |
848 | break; | |
849 | } | |
850 | fputc('\n', stderr); | |
851 | } | |
852 | ||
853 | static void dump_grep_expression_1(struct grep_expr *x, int in) | |
854 | { | |
855 | indent(in); | |
856 | switch (x->node) { | |
857 | case GREP_NODE_TRUE: | |
858 | fprintf(stderr, "true\n"); | |
859 | break; | |
860 | case GREP_NODE_ATOM: | |
861 | dump_grep_pat(x->u.atom); | |
862 | break; | |
863 | case GREP_NODE_NOT: | |
864 | fprintf(stderr, "(not\n"); | |
865 | dump_grep_expression_1(x->u.unary, in+1); | |
866 | indent(in); | |
867 | fprintf(stderr, ")\n"); | |
868 | break; | |
869 | case GREP_NODE_AND: | |
870 | fprintf(stderr, "(and\n"); | |
871 | dump_grep_expression_1(x->u.binary.left, in+1); | |
872 | dump_grep_expression_1(x->u.binary.right, in+1); | |
873 | indent(in); | |
874 | fprintf(stderr, ")\n"); | |
875 | break; | |
876 | case GREP_NODE_OR: | |
877 | fprintf(stderr, "(or\n"); | |
878 | dump_grep_expression_1(x->u.binary.left, in+1); | |
879 | dump_grep_expression_1(x->u.binary.right, in+1); | |
880 | indent(in); | |
881 | fprintf(stderr, ")\n"); | |
882 | break; | |
883 | } | |
884 | } | |
885 | ||
07a7d656 | 886 | static void dump_grep_expression(struct grep_opt *opt) |
17bf35a3 JH |
887 | { |
888 | struct grep_expr *x = opt->pattern_expression; | |
889 | ||
890 | if (opt->all_match) | |
891 | fprintf(stderr, "[all-match]\n"); | |
892 | dump_grep_expression_1(x, 0); | |
893 | fflush(NULL); | |
894 | } | |
895 | ||
5aaeb733 JH |
896 | static struct grep_expr *grep_true_expr(void) |
897 | { | |
898 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
899 | z->node = GREP_NODE_TRUE; | |
900 | return z; | |
901 | } | |
902 | ||
903 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) | |
904 | { | |
905 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
906 | z->node = GREP_NODE_OR; | |
907 | z->u.binary.left = left; | |
908 | z->u.binary.right = right; | |
909 | return z; | |
910 | } | |
911 | ||
95ce9ce2 | 912 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
913 | { |
914 | struct grep_pat *p; | |
95ce9ce2 | 915 | struct grep_expr *header_expr; |
5aaeb733 JH |
916 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
917 | enum grep_header_field fld; | |
83b5d2f5 | 918 | |
95ce9ce2 JH |
919 | if (!opt->header_list) |
920 | return NULL; | |
2385f246 | 921 | |
95ce9ce2 JH |
922 | for (p = opt->header_list; p; p = p->next) { |
923 | if (p->token != GREP_PATTERN_HEAD) | |
033abf97 | 924 | BUG("a non-header pattern in grep header list."); |
3ce3ffb8 AP |
925 | if (p->field < GREP_HEADER_FIELD_MIN || |
926 | GREP_HEADER_FIELD_MAX <= p->field) | |
033abf97 | 927 | BUG("unknown header field %d", p->field); |
95ce9ce2 | 928 | compile_regexp(p, opt); |
80235ba7 | 929 | } |
5aaeb733 JH |
930 | |
931 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
932 | header_group[fld] = NULL; | |
933 | ||
934 | for (p = opt->header_list; p; p = p->next) { | |
935 | struct grep_expr *h; | |
936 | struct grep_pat *pp = p; | |
937 | ||
938 | h = compile_pattern_atom(&pp); | |
939 | if (!h || pp != p->next) | |
033abf97 | 940 | BUG("malformed header expr"); |
5aaeb733 JH |
941 | if (!header_group[p->field]) { |
942 | header_group[p->field] = h; | |
943 | continue; | |
944 | } | |
945 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
946 | } | |
947 | ||
948 | header_expr = NULL; | |
949 | ||
950 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
951 | if (!header_group[fld]) | |
952 | continue; | |
953 | if (!header_expr) | |
954 | header_expr = grep_true_expr(); | |
955 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
956 | } | |
95ce9ce2 JH |
957 | return header_expr; |
958 | } | |
959 | ||
13e4fc7e JH |
960 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
961 | { | |
962 | struct grep_expr *z = x; | |
963 | ||
964 | while (x) { | |
965 | assert(x->node == GREP_NODE_OR); | |
966 | if (x->u.binary.right && | |
967 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
968 | x->u.binary.right = y; | |
969 | break; | |
970 | } | |
971 | x = x->u.binary.right; | |
972 | } | |
973 | return z; | |
974 | } | |
975 | ||
17bf35a3 | 976 | static void compile_grep_patterns_real(struct grep_opt *opt) |
95ce9ce2 JH |
977 | { |
978 | struct grep_pat *p; | |
979 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 980 | |
83b5d2f5 | 981 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
982 | switch (p->token) { |
983 | case GREP_PATTERN: /* atom */ | |
984 | case GREP_PATTERN_HEAD: | |
985 | case GREP_PATTERN_BODY: | |
c822255c | 986 | compile_regexp(p, opt); |
480c1ca6 JH |
987 | break; |
988 | default: | |
83b5d2f5 | 989 | opt->extended = 1; |
480c1ca6 JH |
990 | break; |
991 | } | |
83b5d2f5 JH |
992 | } |
993 | ||
80235ba7 JH |
994 | if (opt->all_match || header_expr) |
995 | opt->extended = 1; | |
17bf35a3 | 996 | else if (!opt->extended && !opt->debug) |
83b5d2f5 JH |
997 | return; |
998 | ||
83b5d2f5 | 999 | p = opt->pattern_list; |
ba150a3f MB |
1000 | if (p) |
1001 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
1002 | if (p) |
1003 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 JH |
1004 | |
1005 | if (!header_expr) | |
1006 | return; | |
1007 | ||
5aaeb733 | 1008 | if (!opt->pattern_expression) |
80235ba7 | 1009 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
1010 | else if (opt->all_match) |
1011 | opt->pattern_expression = grep_splice_or(header_expr, | |
1012 | opt->pattern_expression); | |
5aaeb733 JH |
1013 | else |
1014 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
1015 | header_expr); | |
80235ba7 | 1016 | opt->all_match = 1; |
83b5d2f5 JH |
1017 | } |
1018 | ||
17bf35a3 JH |
1019 | void compile_grep_patterns(struct grep_opt *opt) |
1020 | { | |
1021 | compile_grep_patterns_real(opt); | |
1022 | if (opt->debug) | |
1023 | dump_grep_expression(opt); | |
1024 | } | |
1025 | ||
b48fb5b6 JH |
1026 | static void free_pattern_expr(struct grep_expr *x) |
1027 | { | |
1028 | switch (x->node) { | |
5aaeb733 | 1029 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
1030 | case GREP_NODE_ATOM: |
1031 | break; | |
1032 | case GREP_NODE_NOT: | |
1033 | free_pattern_expr(x->u.unary); | |
1034 | break; | |
1035 | case GREP_NODE_AND: | |
1036 | case GREP_NODE_OR: | |
1037 | free_pattern_expr(x->u.binary.left); | |
1038 | free_pattern_expr(x->u.binary.right); | |
1039 | break; | |
1040 | } | |
1041 | free(x); | |
1042 | } | |
1043 | ||
1044 | void free_grep_patterns(struct grep_opt *opt) | |
1045 | { | |
1046 | struct grep_pat *p, *n; | |
1047 | ||
1048 | for (p = opt->pattern_list; p; p = n) { | |
1049 | n = p->next; | |
1050 | switch (p->token) { | |
1051 | case GREP_PATTERN: /* atom */ | |
1052 | case GREP_PATTERN_HEAD: | |
1053 | case GREP_PATTERN_BODY: | |
48de2a76 | 1054 | if (p->pcre1_regexp) |
6d4b5747 | 1055 | free_pcre1_regexp(p); |
94da9193 ÆAB |
1056 | else if (p->pcre2_pattern) |
1057 | free_pcre2_pattern(p); | |
63e7e9d8 MK |
1058 | else |
1059 | regfree(&p->regexp); | |
526a858a | 1060 | free(p->pattern); |
b48fb5b6 JH |
1061 | break; |
1062 | default: | |
1063 | break; | |
1064 | } | |
1065 | free(p); | |
1066 | } | |
1067 | ||
1068 | if (!opt->extended) | |
1069 | return; | |
1070 | free_pattern_expr(opt->pattern_expression); | |
1071 | } | |
1072 | ||
83b5d2f5 JH |
1073 | static char *end_of_line(char *cp, unsigned long *left) |
1074 | { | |
1075 | unsigned long l = *left; | |
1076 | while (l && *cp != '\n') { | |
1077 | l--; | |
1078 | cp++; | |
1079 | } | |
1080 | *left = l; | |
1081 | return cp; | |
1082 | } | |
1083 | ||
1084 | static int word_char(char ch) | |
1085 | { | |
1086 | return isalnum(ch) || ch == '_'; | |
1087 | } | |
1088 | ||
55f638bd ML |
1089 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
1090 | const char *color) | |
1091 | { | |
daa0c3d9 | 1092 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
1093 | opt->output(opt, color, strlen(color)); |
1094 | opt->output(opt, data, size); | |
1095 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
1096 | } else | |
1097 | opt->output(opt, data, size); | |
1098 | } | |
1099 | ||
1100 | static void output_sep(struct grep_opt *opt, char sign) | |
1101 | { | |
1102 | if (opt->null_following_name) | |
1103 | opt->output(opt, "\0", 1); | |
1104 | else | |
fa151dc5 | 1105 | output_color(opt, &sign, 1, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
1106 | } |
1107 | ||
83caecca RZ |
1108 | static void show_name(struct grep_opt *opt, const char *name) |
1109 | { | |
fa151dc5 | 1110 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1111 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
1112 | } |
1113 | ||
97e77784 MK |
1114 | static int patmatch(struct grep_pat *p, char *line, char *eol, |
1115 | regmatch_t *match, int eflags) | |
1116 | { | |
1117 | int hit; | |
1118 | ||
48de2a76 | 1119 | if (p->pcre1_regexp) |
6d4b5747 | 1120 | hit = !pcre1match(p, line, eol, match, eflags); |
94da9193 ÆAB |
1121 | else if (p->pcre2_pattern) |
1122 | hit = !pcre2match(p, line, eol, match, eflags); | |
97e77784 | 1123 | else |
b7d36ffc JS |
1124 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
1125 | eflags); | |
97e77784 MK |
1126 | |
1127 | return hit; | |
1128 | } | |
1129 | ||
a4d7d2c6 JH |
1130 | static int strip_timestamp(char *bol, char **eol_p) |
1131 | { | |
1132 | char *eol = *eol_p; | |
1133 | int ch; | |
1134 | ||
1135 | while (bol < --eol) { | |
1136 | if (*eol != '>') | |
1137 | continue; | |
1138 | *eol_p = ++eol; | |
1139 | ch = *eol; | |
1140 | *eol = '\0'; | |
1141 | return ch; | |
1142 | } | |
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | static struct { | |
1147 | const char *field; | |
1148 | size_t len; | |
1149 | } header_field[] = { | |
1150 | { "author ", 7 }, | |
1151 | { "committer ", 10 }, | |
72fd13f7 | 1152 | { "reflog ", 7 }, |
a4d7d2c6 JH |
1153 | }; |
1154 | ||
d7eb527d | 1155 | static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, |
79212772 RS |
1156 | enum grep_context ctx, |
1157 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
1158 | { |
1159 | int hit = 0; | |
a4d7d2c6 | 1160 | int saved_ch = 0; |
e701fadb | 1161 | const char *start = bol; |
83b5d2f5 | 1162 | |
480c1ca6 JH |
1163 | if ((p->token != GREP_PATTERN) && |
1164 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
1165 | return 0; | |
1166 | ||
a4d7d2c6 JH |
1167 | if (p->token == GREP_PATTERN_HEAD) { |
1168 | const char *field; | |
1169 | size_t len; | |
1170 | assert(p->field < ARRAY_SIZE(header_field)); | |
1171 | field = header_field[p->field].field; | |
1172 | len = header_field[p->field].len; | |
1173 | if (strncmp(bol, field, len)) | |
1174 | return 0; | |
1175 | bol += len; | |
ad4813b3 NTND |
1176 | switch (p->field) { |
1177 | case GREP_HEADER_AUTHOR: | |
1178 | case GREP_HEADER_COMMITTER: | |
1179 | saved_ch = strip_timestamp(bol, &eol); | |
1180 | break; | |
1181 | default: | |
1182 | break; | |
1183 | } | |
a4d7d2c6 JH |
1184 | } |
1185 | ||
83b5d2f5 | 1186 | again: |
97e77784 | 1187 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 1188 | |
d7eb527d | 1189 | if (hit && p->word_regexp) { |
83b5d2f5 | 1190 | if ((pmatch[0].rm_so < 0) || |
84201eae | 1191 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
1192 | (pmatch[0].rm_eo < 0) || |
1193 | (eol - bol) < pmatch[0].rm_eo) | |
1194 | die("regexp returned nonsense"); | |
1195 | ||
1196 | /* Match beginning must be either beginning of the | |
1197 | * line, or at word boundary (i.e. the last char must | |
1198 | * not be a word char). Similarly, match end must be | |
1199 | * either end of the line, or at word boundary | |
1200 | * (i.e. the next char must not be a word char). | |
1201 | */ | |
fb62eb7f | 1202 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
1203 | !word_char(bol[pmatch[0].rm_so-1])) && |
1204 | ((pmatch[0].rm_eo == (eol-bol)) || | |
1205 | !word_char(bol[pmatch[0].rm_eo])) ) | |
1206 | ; | |
1207 | else | |
1208 | hit = 0; | |
1209 | ||
84201eae RS |
1210 | /* Words consist of at least one character. */ |
1211 | if (pmatch->rm_so == pmatch->rm_eo) | |
1212 | hit = 0; | |
1213 | ||
83b5d2f5 JH |
1214 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
1215 | /* There could be more than one match on the | |
1216 | * line, and the first match might not be | |
1217 | * strict word match. But later ones could be! | |
fb62eb7f RS |
1218 | * Forward to the next possible start, i.e. the |
1219 | * next position following a non-word char. | |
83b5d2f5 JH |
1220 | */ |
1221 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
1222 | while (word_char(bol[-1]) && bol < eol) |
1223 | bol++; | |
dbb6a4ad | 1224 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
1225 | if (bol < eol) |
1226 | goto again; | |
83b5d2f5 JH |
1227 | } |
1228 | } | |
a4d7d2c6 JH |
1229 | if (p->token == GREP_PATTERN_HEAD && saved_ch) |
1230 | *eol = saved_ch; | |
e701fadb RS |
1231 | if (hit) { |
1232 | pmatch[0].rm_so += bol - start; | |
1233 | pmatch[0].rm_eo += bol - start; | |
1234 | } | |
83b5d2f5 JH |
1235 | return hit; |
1236 | } | |
1237 | ||
68d686e6 TB |
1238 | static int match_expr_eval(struct grep_opt *opt, struct grep_expr *x, char *bol, |
1239 | char *eol, enum grep_context ctx, ssize_t *col, | |
1240 | ssize_t *icol, int collect_hits) | |
83b5d2f5 | 1241 | { |
0ab7befa JH |
1242 | int h = 0; |
1243 | ||
c922b01f LT |
1244 | if (!x) |
1245 | die("Not a valid grep expression"); | |
83b5d2f5 | 1246 | switch (x->node) { |
5aaeb733 JH |
1247 | case GREP_NODE_TRUE: |
1248 | h = 1; | |
1249 | break; | |
83b5d2f5 | 1250 | case GREP_NODE_ATOM: |
68d686e6 TB |
1251 | { |
1252 | regmatch_t tmp; | |
1253 | h = match_one_pattern(x->u.atom, bol, eol, ctx, | |
1254 | &tmp, 0); | |
1255 | if (h && (*col < 0 || tmp.rm_so < *col)) | |
1256 | *col = tmp.rm_so; | |
1257 | } | |
83b5d2f5 JH |
1258 | break; |
1259 | case GREP_NODE_NOT: | |
68d686e6 TB |
1260 | /* |
1261 | * Upon visiting a GREP_NODE_NOT, col and icol become swapped. | |
1262 | */ | |
1263 | h = !match_expr_eval(opt, x->u.unary, bol, eol, ctx, icol, col, | |
1264 | 0); | |
0ab7befa | 1265 | break; |
83b5d2f5 | 1266 | case GREP_NODE_AND: |
017c0fcf | 1267 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
68d686e6 | 1268 | icol, 0); |
017c0fcf TB |
1269 | if (h || opt->columnnum) { |
1270 | /* | |
1271 | * Don't short-circuit AND when given --column, since a | |
1272 | * NOT earlier in the tree may turn this into an OR. In | |
1273 | * this case, see the below comment. | |
1274 | */ | |
1275 | h &= match_expr_eval(opt, x->u.binary.right, bol, eol, | |
1276 | ctx, col, icol, 0); | |
1277 | } | |
0ab7befa | 1278 | break; |
83b5d2f5 | 1279 | case GREP_NODE_OR: |
017c0fcf TB |
1280 | if (!(collect_hits || opt->columnnum)) { |
1281 | /* | |
1282 | * Don't short-circuit OR when given --column (or | |
1283 | * collecting hits) to ensure we don't skip a later | |
1284 | * child that would produce an earlier match. | |
1285 | */ | |
68d686e6 TB |
1286 | return (match_expr_eval(opt, x->u.binary.left, bol, eol, |
1287 | ctx, col, icol, 0) || | |
1288 | match_expr_eval(opt, x->u.binary.right, bol, | |
1289 | eol, ctx, col, icol, 0)); | |
017c0fcf | 1290 | } |
68d686e6 TB |
1291 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
1292 | icol, 0); | |
017c0fcf TB |
1293 | if (collect_hits) |
1294 | x->u.binary.left->hit |= h; | |
68d686e6 | 1295 | h |= match_expr_eval(opt, x->u.binary.right, bol, eol, ctx, col, |
017c0fcf | 1296 | icol, collect_hits); |
0ab7befa JH |
1297 | break; |
1298 | default: | |
d7530708 | 1299 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1300 | } |
0ab7befa JH |
1301 | if (collect_hits) |
1302 | x->hit |= h; | |
1303 | return h; | |
83b5d2f5 JH |
1304 | } |
1305 | ||
480c1ca6 | 1306 | static int match_expr(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 TB |
1307 | enum grep_context ctx, ssize_t *col, |
1308 | ssize_t *icol, int collect_hits) | |
83b5d2f5 JH |
1309 | { |
1310 | struct grep_expr *x = opt->pattern_expression; | |
68d686e6 | 1311 | return match_expr_eval(opt, x, bol, eol, ctx, col, icol, collect_hits); |
83b5d2f5 JH |
1312 | } |
1313 | ||
480c1ca6 | 1314 | static int match_line(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 | 1315 | ssize_t *col, ssize_t *icol, |
0ab7befa | 1316 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1317 | { |
1318 | struct grep_pat *p; | |
017c0fcf | 1319 | int hit = 0; |
79212772 | 1320 | |
83b5d2f5 | 1321 | if (opt->extended) |
68d686e6 TB |
1322 | return match_expr(opt, bol, eol, ctx, col, icol, |
1323 | collect_hits); | |
0ab7befa JH |
1324 | |
1325 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1326 | for (p = opt->pattern_list; p; p = p->next) { |
68d686e6 TB |
1327 | regmatch_t tmp; |
1328 | if (match_one_pattern(p, bol, eol, ctx, &tmp, 0)) { | |
017c0fcf TB |
1329 | hit |= 1; |
1330 | if (!opt->columnnum) { | |
1331 | /* | |
1332 | * Without --column, any single match on a line | |
1333 | * is enough to know that it needs to be | |
1334 | * printed. With --column, scan _all_ patterns | |
1335 | * to find the earliest. | |
1336 | */ | |
1337 | break; | |
1338 | } | |
1339 | if (*col < 0 || tmp.rm_so < *col) | |
1340 | *col = tmp.rm_so; | |
68d686e6 | 1341 | } |
83b5d2f5 | 1342 | } |
017c0fcf | 1343 | return hit; |
83b5d2f5 JH |
1344 | } |
1345 | ||
7e8f59d5 RS |
1346 | static int match_next_pattern(struct grep_pat *p, char *bol, char *eol, |
1347 | enum grep_context ctx, | |
1348 | regmatch_t *pmatch, int eflags) | |
1349 | { | |
1350 | regmatch_t match; | |
1351 | ||
1352 | if (!match_one_pattern(p, bol, eol, ctx, &match, eflags)) | |
1353 | return 0; | |
1354 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1355 | return 0; | |
1356 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1357 | if (match.rm_so > pmatch->rm_so) | |
1358 | return 1; | |
1359 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1360 | return 1; | |
1361 | } | |
1362 | pmatch->rm_so = match.rm_so; | |
1363 | pmatch->rm_eo = match.rm_eo; | |
1364 | return 1; | |
1365 | } | |
1366 | ||
1367 | static int next_match(struct grep_opt *opt, char *bol, char *eol, | |
1368 | enum grep_context ctx, regmatch_t *pmatch, int eflags) | |
1369 | { | |
1370 | struct grep_pat *p; | |
1371 | int hit = 0; | |
1372 | ||
1373 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1374 | if (bol < eol) { | |
1375 | for (p = opt->pattern_list; p; p = p->next) { | |
1376 | switch (p->token) { | |
1377 | case GREP_PATTERN: /* atom */ | |
1378 | case GREP_PATTERN_HEAD: | |
1379 | case GREP_PATTERN_BODY: | |
1380 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1381 | pmatch, eflags); | |
1382 | break; | |
1383 | default: | |
1384 | break; | |
1385 | } | |
1386 | } | |
1387 | } | |
1388 | return hit; | |
1389 | } | |
1390 | ||
c707ded3 TB |
1391 | static void show_line_header(struct grep_opt *opt, const char *name, |
1392 | unsigned lno, ssize_t cno, char sign) | |
7e8f59d5 | 1393 | { |
1d84f72e | 1394 | if (opt->heading && opt->last_shown == 0) { |
fa151dc5 | 1395 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
1d84f72e RS |
1396 | opt->output(opt, "\n", 1); |
1397 | } | |
5dd06d38 RS |
1398 | opt->last_shown = lno; |
1399 | ||
1d84f72e | 1400 | if (!opt->heading && opt->pathname) { |
fa151dc5 | 1401 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
55f638bd | 1402 | output_sep(opt, sign); |
5b594f45 FK |
1403 | } |
1404 | if (opt->linenum) { | |
1405 | char buf[32]; | |
1a168e5c | 1406 | xsnprintf(buf, sizeof(buf), "%d", lno); |
fa151dc5 | 1407 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]); |
55f638bd | 1408 | output_sep(opt, sign); |
5b594f45 | 1409 | } |
89252cd0 TB |
1410 | /* |
1411 | * Treat 'cno' as the 1-indexed offset from the start of a non-context | |
1412 | * line to its first match. Otherwise, 'cno' is 0 indicating that we are | |
1413 | * being called with a context line. | |
1414 | */ | |
1415 | if (opt->columnnum && cno) { | |
1416 | char buf[32]; | |
1417 | xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno); | |
d036d667 | 1418 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]); |
89252cd0 TB |
1419 | output_sep(opt, sign); |
1420 | } | |
c707ded3 TB |
1421 | } |
1422 | ||
1423 | static void show_line(struct grep_opt *opt, char *bol, char *eol, | |
1424 | const char *name, unsigned lno, ssize_t cno, char sign) | |
1425 | { | |
1426 | int rest = eol - bol; | |
9d8db06e TB |
1427 | const char *match_color = NULL; |
1428 | const char *line_color = NULL; | |
c707ded3 TB |
1429 | |
1430 | if (opt->file_break && opt->last_shown == 0) { | |
1431 | if (opt->show_hunk_mark) | |
1432 | opt->output(opt, "\n", 1); | |
1433 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { | |
1434 | if (opt->last_shown == 0) { | |
1435 | if (opt->show_hunk_mark) { | |
87ece7ce | 1436 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1437 | opt->output(opt, "\n", 1); |
1438 | } | |
1439 | } else if (lno > opt->last_shown + 1) { | |
87ece7ce | 1440 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1441 | opt->output(opt, "\n", 1); |
1442 | } | |
1443 | } | |
9d8db06e TB |
1444 | if (!opt->only_matching) { |
1445 | /* | |
1446 | * In case the line we're being called with contains more than | |
1447 | * one match, leave printing each header to the loop below. | |
1448 | */ | |
1449 | show_line_header(opt, name, lno, cno, sign); | |
1450 | } | |
1451 | if (opt->color || opt->only_matching) { | |
7e8f59d5 RS |
1452 | regmatch_t match; |
1453 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
1454 | int ch = *eol; | |
1455 | int eflags = 0; | |
1456 | ||
9d8db06e TB |
1457 | if (opt->color) { |
1458 | if (sign == ':') | |
87ece7ce | 1459 | match_color = opt->colors[GREP_COLOR_MATCH_SELECTED]; |
9d8db06e | 1460 | else |
87ece7ce | 1461 | match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT]; |
9d8db06e | 1462 | if (sign == ':') |
87ece7ce | 1463 | line_color = opt->colors[GREP_COLOR_SELECTED]; |
9d8db06e | 1464 | else if (sign == '-') |
87ece7ce | 1465 | line_color = opt->colors[GREP_COLOR_CONTEXT]; |
9d8db06e | 1466 | else if (sign == '=') |
87ece7ce | 1467 | line_color = opt->colors[GREP_COLOR_FUNCTION]; |
9d8db06e | 1468 | } |
7e8f59d5 RS |
1469 | *eol = '\0'; |
1470 | while (next_match(opt, bol, eol, ctx, &match, eflags)) { | |
1f5b9cc4 RS |
1471 | if (match.rm_so == match.rm_eo) |
1472 | break; | |
5b594f45 | 1473 | |
9d8db06e TB |
1474 | if (opt->only_matching) |
1475 | show_line_header(opt, name, lno, cno, sign); | |
1476 | else | |
1477 | output_color(opt, bol, match.rm_so, line_color); | |
55f638bd | 1478 | output_color(opt, bol + match.rm_so, |
79a77109 | 1479 | match.rm_eo - match.rm_so, match_color); |
9d8db06e TB |
1480 | if (opt->only_matching) |
1481 | opt->output(opt, "\n", 1); | |
7e8f59d5 | 1482 | bol += match.rm_eo; |
9d8db06e | 1483 | cno += match.rm_eo; |
7e8f59d5 RS |
1484 | rest -= match.rm_eo; |
1485 | eflags = REG_NOTBOL; | |
1486 | } | |
1487 | *eol = ch; | |
1488 | } | |
9d8db06e TB |
1489 | if (!opt->only_matching) { |
1490 | output_color(opt, bol, rest, line_color); | |
1491 | opt->output(opt, "\n", 1); | |
1492 | } | |
7e8f59d5 RS |
1493 | } |
1494 | ||
78db6ea9 JK |
1495 | int grep_use_locks; |
1496 | ||
0579f91d TR |
1497 | /* |
1498 | * This lock protects access to the gitattributes machinery, which is | |
1499 | * not thread-safe. | |
1500 | */ | |
1501 | pthread_mutex_t grep_attr_mutex; | |
1502 | ||
78db6ea9 | 1503 | static inline void grep_attr_lock(void) |
0579f91d | 1504 | { |
78db6ea9 | 1505 | if (grep_use_locks) |
0579f91d TR |
1506 | pthread_mutex_lock(&grep_attr_mutex); |
1507 | } | |
1508 | ||
78db6ea9 | 1509 | static inline void grep_attr_unlock(void) |
0579f91d | 1510 | { |
78db6ea9 | 1511 | if (grep_use_locks) |
0579f91d TR |
1512 | pthread_mutex_unlock(&grep_attr_mutex); |
1513 | } | |
b3aeb285 | 1514 | |
e1327023 | 1515 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, char *bol, char *eol) |
2944e4e6 | 1516 | { |
60ecac98 | 1517 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1518 | if (xecfg && !xecfg->find_func) { |
acd00ea0 | 1519 | grep_source_load_driver(gs, opt->repo->index); |
94ad9d9e JK |
1520 | if (gs->driver->funcname.pattern) { |
1521 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1522 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1523 | } else { | |
1524 | xecfg = opt->priv = NULL; | |
1525 | } | |
1526 | } | |
1527 | ||
1528 | if (xecfg) { | |
60ecac98 RS |
1529 | char buf[1]; |
1530 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1531 | xecfg->find_func_priv) >= 0; | |
1532 | } | |
1533 | ||
2944e4e6 RS |
1534 | if (bol == eol) |
1535 | return 0; | |
1536 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1537 | return 1; | |
1538 | return 0; | |
1539 | } | |
1540 | ||
e1327023 JK |
1541 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1542 | char *bol, unsigned lno) | |
2944e4e6 | 1543 | { |
e1327023 | 1544 | while (bol > gs->buf) { |
2944e4e6 RS |
1545 | char *eol = --bol; |
1546 | ||
e1327023 | 1547 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1548 | bol--; |
1549 | lno--; | |
1550 | ||
1551 | if (lno <= opt->last_shown) | |
1552 | break; | |
1553 | ||
e1327023 | 1554 | if (match_funcname(opt, gs, bol, eol)) { |
89252cd0 | 1555 | show_line(opt, bol, eol, gs->name, lno, 0, '='); |
2944e4e6 RS |
1556 | break; |
1557 | } | |
1558 | } | |
1559 | } | |
1560 | ||
a5dc20b0 RS |
1561 | static int is_empty_line(const char *bol, const char *eol); |
1562 | ||
e1327023 | 1563 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
ba8ea749 | 1564 | char *bol, char *end, unsigned lno) |
49de3216 | 1565 | { |
6653a01b | 1566 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1567 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1568 | |
49de3216 RS |
1569 | if (opt->pre_context < lno) |
1570 | from = lno - opt->pre_context; | |
1571 | if (from <= opt->last_shown) | |
1572 | from = opt->last_shown + 1; | |
6653a01b | 1573 | orig_from = from; |
a5dc20b0 RS |
1574 | if (opt->funcbody) { |
1575 | if (match_funcname(opt, gs, bol, end)) | |
1576 | comment_needed = 1; | |
1577 | else | |
1578 | funcname_needed = 1; | |
6653a01b RS |
1579 | from = opt->last_shown + 1; |
1580 | } | |
49de3216 RS |
1581 | |
1582 | /* Rewind. */ | |
6653a01b | 1583 | while (bol > gs->buf && cur > from) { |
a5dc20b0 | 1584 | char *next_bol = bol; |
2944e4e6 RS |
1585 | char *eol = --bol; |
1586 | ||
e1327023 | 1587 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1588 | bol--; |
1589 | cur--; | |
a5dc20b0 RS |
1590 | if (comment_needed && (is_empty_line(bol, eol) || |
1591 | match_funcname(opt, gs, bol, eol))) { | |
1592 | comment_needed = 0; | |
1593 | from = orig_from; | |
1594 | if (cur < from) { | |
1595 | cur++; | |
1596 | bol = next_bol; | |
1597 | break; | |
1598 | } | |
1599 | } | |
e1327023 | 1600 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1601 | funcname_lno = cur; |
1602 | funcname_needed = 0; | |
a5dc20b0 RS |
1603 | if (opt->funcbody) |
1604 | comment_needed = 1; | |
1605 | else | |
1606 | from = orig_from; | |
2944e4e6 | 1607 | } |
49de3216 RS |
1608 | } |
1609 | ||
2944e4e6 RS |
1610 | /* We need to look even further back to find a function signature. */ |
1611 | if (opt->funcname && funcname_needed) | |
e1327023 | 1612 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1613 | |
49de3216 RS |
1614 | /* Back forward. */ |
1615 | while (cur < lno) { | |
2944e4e6 | 1616 | char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1617 | |
1618 | while (*eol != '\n') | |
1619 | eol++; | |
89252cd0 | 1620 | show_line(opt, bol, eol, gs->name, cur, 0, sign); |
49de3216 RS |
1621 | bol = eol + 1; |
1622 | cur++; | |
1623 | } | |
1624 | } | |
1625 | ||
a26345b6 JH |
1626 | static int should_lookahead(struct grep_opt *opt) |
1627 | { | |
1628 | struct grep_pat *p; | |
1629 | ||
1630 | if (opt->extended) | |
1631 | return 0; /* punt for too complex stuff */ | |
1632 | if (opt->invert) | |
1633 | return 0; | |
1634 | for (p = opt->pattern_list; p; p = p->next) { | |
1635 | if (p->token != GREP_PATTERN) | |
1636 | return 0; /* punt for "header only" and stuff */ | |
1637 | } | |
1638 | return 1; | |
1639 | } | |
1640 | ||
1641 | static int look_ahead(struct grep_opt *opt, | |
1642 | unsigned long *left_p, | |
1643 | unsigned *lno_p, | |
1644 | char **bol_p) | |
1645 | { | |
1646 | unsigned lno = *lno_p; | |
1647 | char *bol = *bol_p; | |
1648 | struct grep_pat *p; | |
1649 | char *sp, *last_bol; | |
1650 | regoff_t earliest = -1; | |
1651 | ||
1652 | for (p = opt->pattern_list; p; p = p->next) { | |
1653 | int hit; | |
1654 | regmatch_t m; | |
1655 | ||
97e77784 | 1656 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1657 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1658 | continue; | |
1659 | if (earliest < 0 || m.rm_so < earliest) | |
1660 | earliest = m.rm_so; | |
1661 | } | |
1662 | ||
1663 | if (earliest < 0) { | |
1664 | *bol_p = bol + *left_p; | |
1665 | *left_p = 0; | |
1666 | return 1; | |
1667 | } | |
1668 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1669 | ; /* find the beginning of the line */ | |
1670 | last_bol = sp; | |
1671 | ||
1672 | for (sp = bol; sp < last_bol; sp++) { | |
1673 | if (*sp == '\n') | |
1674 | lno++; | |
1675 | } | |
1676 | *left_p -= last_bol - bol; | |
1677 | *bol_p = last_bol; | |
1678 | *lno_p = lno; | |
1679 | return 0; | |
1680 | } | |
1681 | ||
38bbc2ea NTND |
1682 | static int fill_textconv_grep(struct repository *r, |
1683 | struct userdiff_driver *driver, | |
335ec3bf JK |
1684 | struct grep_source *gs) |
1685 | { | |
1686 | struct diff_filespec *df; | |
1687 | char *buf; | |
1688 | size_t size; | |
1689 | ||
1690 | if (!driver || !driver->textconv) | |
1691 | return grep_source_load(gs); | |
1692 | ||
1693 | /* | |
1694 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1695 | * have to pretend to be one. If we could unify the grep_source | |
1696 | * and diff_filespec structs, this mess could just go away. | |
1697 | */ | |
1698 | df = alloc_filespec(gs->path); | |
1699 | switch (gs->type) { | |
1c41c82b | 1700 | case GREP_SOURCE_OID: |
335ec3bf JK |
1701 | fill_filespec(df, gs->identifier, 1, 0100644); |
1702 | break; | |
1703 | case GREP_SOURCE_FILE: | |
f9704c2d | 1704 | fill_filespec(df, &null_oid, 0, 0100644); |
335ec3bf JK |
1705 | break; |
1706 | default: | |
033abf97 | 1707 | BUG("attempt to textconv something without a path?"); |
335ec3bf JK |
1708 | } |
1709 | ||
1710 | /* | |
1d1729ca MT |
1711 | * fill_textconv is not remotely thread-safe; it modifies the global |
1712 | * diff tempfile structure, writes to the_repo's odb and might | |
1713 | * internally call thread-unsafe functions such as the | |
1714 | * prepare_packed_git() lazy-initializator. Because of the last two, we | |
1715 | * must ensure mutual exclusion between this call and the object reading | |
1716 | * API, thus we use obj_read_lock() here. | |
1717 | * | |
1718 | * TODO: allowing text conversion to run in parallel with object | |
1719 | * reading operations might increase performance in the multithreaded | |
1720 | * non-worktreee git-grep with --textconv. | |
335ec3bf | 1721 | */ |
1d1729ca | 1722 | obj_read_lock(); |
38bbc2ea | 1723 | size = fill_textconv(r, driver, df, &buf); |
1d1729ca | 1724 | obj_read_unlock(); |
335ec3bf JK |
1725 | free_filespec(df); |
1726 | ||
1727 | /* | |
1728 | * The normal fill_textconv usage by the diff machinery would just keep | |
1729 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1730 | * grep code passes around a grep_source and assumes that its "buf" | |
1731 | * pointer is the beginning of the thing we are searching. So let's | |
1732 | * install our textconv'd version into the grep_source, taking care not | |
1733 | * to leak any existing buffer. | |
1734 | */ | |
1735 | grep_source_clear_data(gs); | |
1736 | gs->buf = buf; | |
1737 | gs->size = size; | |
1738 | ||
1739 | return 0; | |
1740 | } | |
1741 | ||
4aa2c475 RS |
1742 | static int is_empty_line(const char *bol, const char *eol) |
1743 | { | |
1744 | while (bol < eol && isspace(*bol)) | |
1745 | bol++; | |
1746 | return bol == eol; | |
1747 | } | |
1748 | ||
e1327023 | 1749 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1750 | { |
e1327023 | 1751 | char *bol; |
4aa2c475 | 1752 | char *peek_bol = NULL; |
e1327023 | 1753 | unsigned long left; |
83b5d2f5 | 1754 | unsigned lno = 1; |
83b5d2f5 | 1755 | unsigned last_hit = 0; |
83b5d2f5 | 1756 | int binary_match_only = 0; |
83b5d2f5 | 1757 | unsigned count = 0; |
a26345b6 | 1758 | int try_lookahead = 0; |
ba8ea749 | 1759 | int show_function = 0; |
335ec3bf | 1760 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1761 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1762 | xdemitconf_t xecfg; |
83b5d2f5 | 1763 | |
de99eb0c ES |
1764 | if (!opt->status_only && gs->name == NULL) |
1765 | BUG("grep call which could print a name requires " | |
1766 | "grep_source.name be non-NULL"); | |
1767 | ||
5b594f45 FK |
1768 | if (!opt->output) |
1769 | opt->output = std_output; | |
1770 | ||
ba8ea749 RS |
1771 | if (opt->pre_context || opt->post_context || opt->file_break || |
1772 | opt->funcbody) { | |
08303c36 RS |
1773 | /* Show hunk marks, except for the first file. */ |
1774 | if (opt->last_shown) | |
1775 | opt->show_hunk_mark = 1; | |
1776 | /* | |
1777 | * If we're using threads then we can't easily identify | |
1778 | * the first file. Always put hunk marks in that case | |
1779 | * and skip the very first one later in work_done(). | |
1780 | */ | |
1781 | if (opt->output != std_output) | |
1782 | opt->show_hunk_mark = 1; | |
1783 | } | |
431d6e7b RS |
1784 | opt->last_shown = 0; |
1785 | ||
335ec3bf | 1786 | if (opt->allow_textconv) { |
acd00ea0 | 1787 | grep_source_load_driver(gs, opt->repo->index); |
335ec3bf JK |
1788 | /* |
1789 | * We might set up the shared textconv cache data here, which | |
1d1729ca MT |
1790 | * is not thread-safe. Also, get_oid_with_context() and |
1791 | * parse_object() might be internally called. As they are not | |
84544f2e | 1792 | * currently thread-safe and might be racy with object reading, |
1d1729ca | 1793 | * obj_read_lock() must be called. |
335ec3bf JK |
1794 | */ |
1795 | grep_attr_lock(); | |
1d1729ca | 1796 | obj_read_lock(); |
bd7ad45b | 1797 | textconv = userdiff_get_textconv(opt->repo, gs->driver); |
1d1729ca | 1798 | obj_read_unlock(); |
335ec3bf JK |
1799 | grep_attr_unlock(); |
1800 | } | |
1801 | ||
1802 | /* | |
1803 | * We know the result of a textconv is text, so we only have to care | |
1804 | * about binary handling if we are not using it. | |
1805 | */ | |
1806 | if (!textconv) { | |
1807 | switch (opt->binary) { | |
1808 | case GREP_BINARY_DEFAULT: | |
acd00ea0 | 1809 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1810 | binary_match_only = 1; |
1811 | break; | |
1812 | case GREP_BINARY_NOMATCH: | |
acd00ea0 | 1813 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1814 | return 0; /* Assume unmatch */ |
1815 | break; | |
1816 | case GREP_BINARY_TEXT: | |
1817 | break; | |
1818 | default: | |
033abf97 | 1819 | BUG("unknown binary handling mode"); |
335ec3bf | 1820 | } |
83b5d2f5 JH |
1821 | } |
1822 | ||
60ecac98 | 1823 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1824 | opt->priv = &xecfg; |
1825 | ||
a26345b6 | 1826 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1827 | |
38bbc2ea | 1828 | if (fill_textconv_grep(opt->repo, textconv, gs) < 0) |
08265798 JK |
1829 | return 0; |
1830 | ||
e1327023 JK |
1831 | bol = gs->buf; |
1832 | left = gs->size; | |
83b5d2f5 JH |
1833 | while (left) { |
1834 | char *eol, ch; | |
0ab7befa | 1835 | int hit; |
89252cd0 | 1836 | ssize_t cno; |
68d686e6 | 1837 | ssize_t col = -1, icol = -1; |
83b5d2f5 | 1838 | |
a26345b6 | 1839 | /* |
8997da38 | 1840 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1841 | * has the next hit; don't call it if we need to do |
1842 | * something more than just skipping the current line | |
1843 | * in response to an unmatch for the current line. E.g. | |
1844 | * inside a post-context window, we will show the current | |
1845 | * line as a context around the previous hit when it | |
1846 | * doesn't hit. | |
1847 | */ | |
1848 | if (try_lookahead | |
1849 | && !(last_hit | |
ba8ea749 RS |
1850 | && (show_function || |
1851 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1852 | && look_ahead(opt, &left, &lno, &bol)) |
1853 | break; | |
83b5d2f5 JH |
1854 | eol = end_of_line(bol, &left); |
1855 | ch = *eol; | |
1856 | *eol = 0; | |
1857 | ||
480c1ca6 JH |
1858 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1859 | ctx = GREP_CONTEXT_BODY; | |
1860 | ||
68d686e6 | 1861 | hit = match_line(opt, bol, eol, &col, &icol, ctx, collect_hits); |
83b5d2f5 JH |
1862 | *eol = ch; |
1863 | ||
0ab7befa JH |
1864 | if (collect_hits) |
1865 | goto next_line; | |
1866 | ||
83b5d2f5 JH |
1867 | /* "grep -v -e foo -e bla" should list lines |
1868 | * that do not have either, so inversion should | |
1869 | * be done outside. | |
1870 | */ | |
1871 | if (opt->invert) | |
1872 | hit = !hit; | |
1873 | if (opt->unmatch_name_only) { | |
1874 | if (hit) | |
1875 | return 0; | |
1876 | goto next_line; | |
1877 | } | |
1878 | if (hit) { | |
1879 | count++; | |
1880 | if (opt->status_only) | |
1881 | return 1; | |
321ffcc0 | 1882 | if (opt->name_only) { |
e1327023 | 1883 | show_name(opt, gs->name); |
321ffcc0 RS |
1884 | return 1; |
1885 | } | |
c30c10cf RS |
1886 | if (opt->count) |
1887 | goto next_line; | |
83b5d2f5 | 1888 | if (binary_match_only) { |
5b594f45 | 1889 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1890 | output_color(opt, gs->name, strlen(gs->name), |
fa151dc5 | 1891 | opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1892 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1893 | return 1; |
1894 | } | |
83b5d2f5 JH |
1895 | /* Hit at this line. If we haven't shown the |
1896 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1897 | */ |
ba8ea749 | 1898 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1899 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1900 | else if (opt->funcname) |
e1327023 | 1901 | show_funcname_line(opt, gs, bol, lno); |
89252cd0 TB |
1902 | cno = opt->invert ? icol : col; |
1903 | if (cno < 0) { | |
1904 | /* | |
1905 | * A negative cno indicates that there was no | |
1906 | * match on the line. We are thus inverted and | |
1907 | * being asked to show all lines that _don't_ | |
1908 | * match a given expression. Therefore, set cno | |
1909 | * to 0 to suggest the whole line matches. | |
1910 | */ | |
1911 | cno = 0; | |
1912 | } | |
1913 | show_line(opt, bol, eol, gs->name, lno, cno + 1, ':'); | |
5dd06d38 | 1914 | last_hit = lno; |
ba8ea749 RS |
1915 | if (opt->funcbody) |
1916 | show_function = 1; | |
1917 | goto next_line; | |
83b5d2f5 | 1918 | } |
4aa2c475 RS |
1919 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1920 | unsigned long peek_left = left; | |
1921 | char *peek_eol = eol; | |
1922 | ||
1923 | /* | |
1924 | * Trailing empty lines are not interesting. | |
1925 | * Peek past them to see if they belong to the | |
1926 | * body of the current function. | |
1927 | */ | |
1928 | peek_bol = bol; | |
1929 | while (is_empty_line(peek_bol, peek_eol)) { | |
1930 | peek_bol = peek_eol + 1; | |
1931 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1932 | } | |
1933 | ||
1934 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1935 | show_function = 0; | |
1936 | } | |
ba8ea749 RS |
1937 | if (show_function || |
1938 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1939 | /* If the last hit is within the post context, |
1940 | * we need to show this line. | |
1941 | */ | |
89252cd0 | 1942 | show_line(opt, bol, eol, gs->name, lno, col + 1, '-'); |
83b5d2f5 | 1943 | } |
83b5d2f5 JH |
1944 | |
1945 | next_line: | |
1946 | bol = eol + 1; | |
1947 | if (!left) | |
1948 | break; | |
1949 | left--; | |
1950 | lno++; | |
1951 | } | |
1952 | ||
0ab7befa JH |
1953 | if (collect_hits) |
1954 | return 0; | |
b48fb5b6 | 1955 | |
83b5d2f5 | 1956 | if (opt->status_only) |
e1f68c66 | 1957 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1958 | if (opt->unmatch_name_only) { |
1959 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1960 | show_name(opt, gs->name); |
83b5d2f5 JH |
1961 | return 1; |
1962 | } | |
1963 | ||
60ecac98 RS |
1964 | xdiff_clear_find_func(&xecfg); |
1965 | opt->priv = NULL; | |
1966 | ||
83b5d2f5 JH |
1967 | /* NEEDSWORK: |
1968 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1969 | * which feels mostly useless but sometimes useful. Maybe | |
1970 | * make it another option? For now suppress them. | |
1971 | */ | |
5b594f45 FK |
1972 | if (opt->count && count) { |
1973 | char buf[32]; | |
f76d947a RS |
1974 | if (opt->pathname) { |
1975 | output_color(opt, gs->name, strlen(gs->name), | |
fa151dc5 | 1976 | opt->colors[GREP_COLOR_FILENAME]); |
f76d947a RS |
1977 | output_sep(opt, ':'); |
1978 | } | |
1a168e5c | 1979 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 1980 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 1981 | return 1; |
5b594f45 | 1982 | } |
83b5d2f5 JH |
1983 | return !!last_hit; |
1984 | } | |
1985 | ||
0ab7befa JH |
1986 | static void clr_hit_marker(struct grep_expr *x) |
1987 | { | |
1988 | /* All-hit markers are meaningful only at the very top level | |
1989 | * OR node. | |
1990 | */ | |
1991 | while (1) { | |
1992 | x->hit = 0; | |
1993 | if (x->node != GREP_NODE_OR) | |
1994 | return; | |
1995 | x->u.binary.left->hit = 0; | |
1996 | x = x->u.binary.right; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | static int chk_hit_marker(struct grep_expr *x) | |
2001 | { | |
2002 | /* Top level nodes have hit markers. See if they all are hits */ | |
2003 | while (1) { | |
2004 | if (x->node != GREP_NODE_OR) | |
2005 | return x->hit; | |
2006 | if (!x->u.binary.left->hit) | |
2007 | return 0; | |
2008 | x = x->u.binary.right; | |
2009 | } | |
2010 | } | |
2011 | ||
e1327023 | 2012 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
2013 | { |
2014 | /* | |
2015 | * we do not have to do the two-pass grep when we do not check | |
2016 | * buffer-wide "all-match". | |
2017 | */ | |
2018 | if (!opt->all_match) | |
e1327023 | 2019 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
2020 | |
2021 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
2022 | * We first clear hit markers from them. | |
2023 | */ | |
2024 | clr_hit_marker(opt->pattern_expression); | |
e1327023 | 2025 | grep_source_1(opt, gs, 1); |
0ab7befa JH |
2026 | |
2027 | if (!chk_hit_marker(opt->pattern_expression)) | |
2028 | return 0; | |
2029 | ||
e1327023 JK |
2030 | return grep_source_1(opt, gs, 0); |
2031 | } | |
2032 | ||
c876d6da | 2033 | int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) |
e1327023 JK |
2034 | { |
2035 | struct grep_source gs; | |
2036 | int r; | |
2037 | ||
55c61688 | 2038 | grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); |
e1327023 JK |
2039 | gs.buf = buf; |
2040 | gs.size = size; | |
2041 | ||
2042 | r = grep_source(opt, &gs); | |
2043 | ||
2044 | grep_source_clear(&gs); | |
2045 | return r; | |
2046 | } | |
2047 | ||
2048 | void grep_source_init(struct grep_source *gs, enum grep_source_type type, | |
55c61688 NTND |
2049 | const char *name, const char *path, |
2050 | const void *identifier) | |
e1327023 JK |
2051 | { |
2052 | gs->type = type; | |
8c53f071 JK |
2053 | gs->name = xstrdup_or_null(name); |
2054 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
2055 | gs->buf = NULL; |
2056 | gs->size = 0; | |
94ad9d9e | 2057 | gs->driver = NULL; |
e1327023 JK |
2058 | |
2059 | switch (type) { | |
2060 | case GREP_SOURCE_FILE: | |
2061 | gs->identifier = xstrdup(identifier); | |
2062 | break; | |
1c41c82b BW |
2063 | case GREP_SOURCE_OID: |
2064 | gs->identifier = oiddup(identifier); | |
e1327023 JK |
2065 | break; |
2066 | case GREP_SOURCE_BUF: | |
2067 | gs->identifier = NULL; | |
4538eef5 | 2068 | break; |
e1327023 JK |
2069 | } |
2070 | } | |
2071 | ||
2072 | void grep_source_clear(struct grep_source *gs) | |
2073 | { | |
88ce3ef6 ÆAB |
2074 | FREE_AND_NULL(gs->name); |
2075 | FREE_AND_NULL(gs->path); | |
2076 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
2077 | grep_source_clear_data(gs); |
2078 | } | |
2079 | ||
2080 | void grep_source_clear_data(struct grep_source *gs) | |
2081 | { | |
2082 | switch (gs->type) { | |
2083 | case GREP_SOURCE_FILE: | |
1c41c82b | 2084 | case GREP_SOURCE_OID: |
6a83d902 | 2085 | FREE_AND_NULL(gs->buf); |
e1327023 JK |
2086 | gs->size = 0; |
2087 | break; | |
2088 | case GREP_SOURCE_BUF: | |
2089 | /* leave user-provided buf intact */ | |
2090 | break; | |
2091 | } | |
2092 | } | |
2093 | ||
1c41c82b | 2094 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
2095 | { |
2096 | enum object_type type; | |
2097 | ||
b4f5aca4 | 2098 | gs->buf = read_object_file(gs->identifier, &type, &gs->size); |
e1327023 JK |
2099 | if (!gs->buf) |
2100 | return error(_("'%s': unable to read %s"), | |
2101 | gs->name, | |
1c41c82b | 2102 | oid_to_hex(gs->identifier)); |
e1327023 JK |
2103 | return 0; |
2104 | } | |
2105 | ||
2106 | static int grep_source_load_file(struct grep_source *gs) | |
2107 | { | |
2108 | const char *filename = gs->identifier; | |
2109 | struct stat st; | |
2110 | char *data; | |
2111 | size_t size; | |
2112 | int i; | |
2113 | ||
2114 | if (lstat(filename, &st) < 0) { | |
2115 | err_ret: | |
2116 | if (errno != ENOENT) | |
7645d8f1 | 2117 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
2118 | return -1; |
2119 | } | |
2120 | if (!S_ISREG(st.st_mode)) | |
2121 | return -1; | |
2122 | size = xsize_t(st.st_size); | |
2123 | i = open(filename, O_RDONLY); | |
2124 | if (i < 0) | |
2125 | goto err_ret; | |
3733e694 | 2126 | data = xmallocz(size); |
e1327023 | 2127 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 2128 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
2129 | close(i); |
2130 | free(data); | |
2131 | return -1; | |
2132 | } | |
2133 | close(i); | |
e1327023 JK |
2134 | |
2135 | gs->buf = data; | |
2136 | gs->size = size; | |
2137 | return 0; | |
2138 | } | |
2139 | ||
3083301e | 2140 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
2141 | { |
2142 | if (gs->buf) | |
2143 | return 0; | |
2144 | ||
2145 | switch (gs->type) { | |
2146 | case GREP_SOURCE_FILE: | |
2147 | return grep_source_load_file(gs); | |
1c41c82b BW |
2148 | case GREP_SOURCE_OID: |
2149 | return grep_source_load_oid(gs); | |
e1327023 JK |
2150 | case GREP_SOURCE_BUF: |
2151 | return gs->buf ? 0 : -1; | |
2152 | } | |
033abf97 | 2153 | BUG("invalid grep_source type to load"); |
0ab7befa | 2154 | } |
94ad9d9e | 2155 | |
acd00ea0 NTND |
2156 | void grep_source_load_driver(struct grep_source *gs, |
2157 | struct index_state *istate) | |
94ad9d9e JK |
2158 | { |
2159 | if (gs->driver) | |
2160 | return; | |
2161 | ||
2162 | grep_attr_lock(); | |
1d1729ca | 2163 | if (gs->path) |
acd00ea0 | 2164 | gs->driver = userdiff_find_by_path(istate, gs->path); |
94ad9d9e JK |
2165 | if (!gs->driver) |
2166 | gs->driver = userdiff_find_by_name("default"); | |
2167 | grep_attr_unlock(); | |
2168 | } | |
41b59bfc | 2169 | |
acd00ea0 NTND |
2170 | static int grep_source_is_binary(struct grep_source *gs, |
2171 | struct index_state *istate) | |
41b59bfc | 2172 | { |
acd00ea0 | 2173 | grep_source_load_driver(gs, istate); |
41b59bfc JK |
2174 | if (gs->driver->binary != -1) |
2175 | return gs->driver->binary; | |
2176 | ||
2177 | if (!grep_source_load(gs)) | |
2178 | return buffer_is_binary(gs->buf, gs->size); | |
2179 | ||
2180 | return 0; | |
2181 | } |