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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 | |
7687a054 JH |
17 | static struct grep_opt grep_defaults; |
18 | ||
fa151dc5 NTND |
19 | static const char *color_grep_slots[] = { |
20 | [GREP_COLOR_CONTEXT] = "context", | |
21 | [GREP_COLOR_FILENAME] = "filename", | |
22 | [GREP_COLOR_FUNCTION] = "function", | |
23 | [GREP_COLOR_LINENO] = "lineNumber", | |
d036d667 | 24 | [GREP_COLOR_COLUMNNO] = "column", |
fa151dc5 NTND |
25 | [GREP_COLOR_MATCH_CONTEXT] = "matchContext", |
26 | [GREP_COLOR_MATCH_SELECTED] = "matchSelected", | |
27 | [GREP_COLOR_SELECTED] = "selected", | |
28 | [GREP_COLOR_SEP] = "separator", | |
29 | }; | |
30 | ||
379642bc BW |
31 | static void std_output(struct grep_opt *opt, const void *buf, size_t size) |
32 | { | |
33 | fwrite(buf, size, 1, stdout); | |
34 | } | |
35 | ||
75e5e9c3 SB |
36 | static void color_set(char *dst, const char *color_bytes) |
37 | { | |
38 | xsnprintf(dst, COLOR_MAXLEN, "%s", color_bytes); | |
39 | } | |
40 | ||
7687a054 JH |
41 | /* |
42 | * Initialize the grep_defaults template with hardcoded defaults. | |
43 | * We could let the compiler do this, but without C99 initializers | |
44 | * the code gets unwieldy and unreadable, so... | |
45 | */ | |
38bbc2ea | 46 | void init_grep_defaults(struct repository *repo) |
7687a054 JH |
47 | { |
48 | struct grep_opt *opt = &grep_defaults; | |
918d4e1c JH |
49 | static int run_once; |
50 | ||
51 | if (run_once) | |
52 | return; | |
53 | run_once++; | |
7687a054 JH |
54 | |
55 | memset(opt, 0, sizeof(*opt)); | |
38bbc2ea | 56 | opt->repo = repo; |
7687a054 JH |
57 | opt->relative = 1; |
58 | opt->pathname = 1; | |
7687a054 JH |
59 | opt->max_depth = -1; |
60 | opt->pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED; | |
fa151dc5 NTND |
61 | color_set(opt->colors[GREP_COLOR_CONTEXT], ""); |
62 | color_set(opt->colors[GREP_COLOR_FILENAME], ""); | |
63 | color_set(opt->colors[GREP_COLOR_FUNCTION], ""); | |
64 | color_set(opt->colors[GREP_COLOR_LINENO], ""); | |
d036d667 | 65 | color_set(opt->colors[GREP_COLOR_COLUMNNO], ""); |
fa151dc5 NTND |
66 | color_set(opt->colors[GREP_COLOR_MATCH_CONTEXT], GIT_COLOR_BOLD_RED); |
67 | color_set(opt->colors[GREP_COLOR_MATCH_SELECTED], GIT_COLOR_BOLD_RED); | |
68 | color_set(opt->colors[GREP_COLOR_SELECTED], ""); | |
69 | color_set(opt->colors[GREP_COLOR_SEP], GIT_COLOR_CYAN); | |
9d8db06e | 70 | opt->only_matching = 0; |
7687a054 | 71 | opt->color = -1; |
379642bc | 72 | opt->output = std_output; |
7687a054 JH |
73 | } |
74 | ||
75 | static int parse_pattern_type_arg(const char *opt, const char *arg) | |
76 | { | |
77 | if (!strcmp(arg, "default")) | |
78 | return GREP_PATTERN_TYPE_UNSPECIFIED; | |
79 | else if (!strcmp(arg, "basic")) | |
80 | return GREP_PATTERN_TYPE_BRE; | |
81 | else if (!strcmp(arg, "extended")) | |
82 | return GREP_PATTERN_TYPE_ERE; | |
83 | else if (!strcmp(arg, "fixed")) | |
84 | return GREP_PATTERN_TYPE_FIXED; | |
85 | else if (!strcmp(arg, "perl")) | |
86 | return GREP_PATTERN_TYPE_PCRE; | |
87 | die("bad %s argument: %s", opt, arg); | |
88 | } | |
89 | ||
3ac68a93 NTND |
90 | define_list_config_array_extra(color_grep_slots, {"match"}); |
91 | ||
7687a054 JH |
92 | /* |
93 | * Read the configuration file once and store it in | |
94 | * the grep_defaults template. | |
95 | */ | |
96 | int grep_config(const char *var, const char *value, void *cb) | |
97 | { | |
98 | struct grep_opt *opt = &grep_defaults; | |
fa151dc5 | 99 | const char *slot; |
7687a054 JH |
100 | |
101 | if (userdiff_config(var, value) < 0) | |
102 | return -1; | |
103 | ||
104 | if (!strcmp(var, "grep.extendedregexp")) { | |
c7e38551 | 105 | opt->extended_regexp_option = git_config_bool(var, value); |
7687a054 JH |
106 | return 0; |
107 | } | |
108 | ||
109 | if (!strcmp(var, "grep.patterntype")) { | |
110 | opt->pattern_type_option = parse_pattern_type_arg(var, value); | |
111 | return 0; | |
112 | } | |
113 | ||
114 | if (!strcmp(var, "grep.linenumber")) { | |
115 | opt->linenum = git_config_bool(var, value); | |
116 | return 0; | |
117 | } | |
6653fec3 TB |
118 | if (!strcmp(var, "grep.column")) { |
119 | opt->columnnum = git_config_bool(var, value); | |
120 | return 0; | |
121 | } | |
7687a054 | 122 | |
6453f7b3 AS |
123 | if (!strcmp(var, "grep.fullname")) { |
124 | opt->relative = !git_config_bool(var, value); | |
125 | return 0; | |
126 | } | |
127 | ||
7687a054 JH |
128 | if (!strcmp(var, "color.grep")) |
129 | opt->color = git_config_colorbool(var, value); | |
fa151dc5 NTND |
130 | if (!strcmp(var, "color.grep.match")) { |
131 | if (grep_config("color.grep.matchcontext", value, cb) < 0) | |
132 | return -1; | |
133 | if (grep_config("color.grep.matchselected", value, cb) < 0) | |
134 | return -1; | |
135 | } else if (skip_prefix(var, "color.grep.", &slot)) { | |
136 | int i = LOOKUP_CONFIG(color_grep_slots, slot); | |
137 | char *color; | |
138 | ||
139 | if (i < 0) | |
140 | return -1; | |
141 | color = opt->colors[i]; | |
7687a054 JH |
142 | if (!value) |
143 | return config_error_nonbool(var); | |
f6c5a296 | 144 | return color_parse(value, color); |
7687a054 JH |
145 | } |
146 | return 0; | |
147 | } | |
148 | ||
149 | /* | |
150 | * Initialize one instance of grep_opt and copy the | |
151 | * default values from the template we read the configuration | |
152 | * information in an earlier call to git_config(grep_config). | |
153 | */ | |
38bbc2ea | 154 | void grep_init(struct grep_opt *opt, struct repository *repo, const char *prefix) |
7687a054 JH |
155 | { |
156 | struct grep_opt *def = &grep_defaults; | |
fa151dc5 | 157 | int i; |
7687a054 JH |
158 | |
159 | memset(opt, 0, sizeof(*opt)); | |
38bbc2ea | 160 | opt->repo = repo; |
7687a054 JH |
161 | opt->prefix = prefix; |
162 | opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; | |
163 | opt->pattern_tail = &opt->pattern_list; | |
164 | opt->header_tail = &opt->header_list; | |
165 | ||
9d8db06e | 166 | opt->only_matching = def->only_matching; |
7687a054 JH |
167 | opt->color = def->color; |
168 | opt->extended_regexp_option = def->extended_regexp_option; | |
169 | opt->pattern_type_option = def->pattern_type_option; | |
170 | opt->linenum = def->linenum; | |
017c0fcf | 171 | opt->columnnum = def->columnnum; |
7687a054 JH |
172 | opt->max_depth = def->max_depth; |
173 | opt->pathname = def->pathname; | |
7687a054 | 174 | opt->relative = def->relative; |
379642bc | 175 | opt->output = def->output; |
7687a054 | 176 | |
fa151dc5 NTND |
177 | for (i = 0; i < NR_GREP_COLORS; i++) |
178 | color_set(opt->colors[i], def->colors[i]); | |
7687a054 | 179 | } |
07a7d656 | 180 | |
8465541e | 181 | static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
c5c31d33 | 182 | { |
07a3d411 ÆAB |
183 | /* |
184 | * When committing to the pattern type by setting the relevant | |
185 | * fields in grep_opt it's generally not necessary to zero out | |
186 | * the fields we're not choosing, since they won't have been | |
187 | * set by anything. The extended_regexp_option field is the | |
188 | * only exception to this. | |
189 | * | |
190 | * This is because in the process of parsing grep.patternType | |
191 | * & grep.extendedRegexp we set opt->pattern_type_option and | |
192 | * opt->extended_regexp_option, respectively. We then | |
193 | * internally use opt->extended_regexp_option to see if we're | |
194 | * compiling an ERE. It must be unset if that's not actually | |
195 | * the case. | |
196 | */ | |
197 | if (pattern_type != GREP_PATTERN_TYPE_ERE && | |
198 | opt->extended_regexp_option) | |
199 | opt->extended_regexp_option = 0; | |
200 | ||
c5c31d33 JH |
201 | switch (pattern_type) { |
202 | case GREP_PATTERN_TYPE_UNSPECIFIED: | |
203 | /* fall through */ | |
204 | ||
205 | case GREP_PATTERN_TYPE_BRE: | |
c5c31d33 JH |
206 | break; |
207 | ||
208 | case GREP_PATTERN_TYPE_ERE: | |
07a3d411 | 209 | opt->extended_regexp_option = 1; |
c5c31d33 JH |
210 | break; |
211 | ||
212 | case GREP_PATTERN_TYPE_FIXED: | |
213 | opt->fixed = 1; | |
c5c31d33 JH |
214 | break; |
215 | ||
216 | case GREP_PATTERN_TYPE_PCRE: | |
94da9193 | 217 | #ifdef USE_LIBPCRE2 |
94da9193 ÆAB |
218 | opt->pcre2 = 1; |
219 | #else | |
220 | /* | |
221 | * It's important that pcre1 always be assigned to | |
222 | * even when there's no USE_LIBPCRE* defined. We still | |
223 | * call the PCRE stub function, it just dies with | |
224 | * "cannot use Perl-compatible regexes[...]". | |
225 | */ | |
6d4b5747 | 226 | opt->pcre1 = 1; |
94da9193 | 227 | #endif |
c5c31d33 JH |
228 | break; |
229 | } | |
230 | } | |
231 | ||
8465541e JH |
232 | void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
233 | { | |
234 | if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) | |
235 | grep_set_pattern_type_option(pattern_type, opt); | |
236 | else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) | |
237 | grep_set_pattern_type_option(opt->pattern_type_option, opt); | |
238 | else if (opt->extended_regexp_option) | |
07a3d411 ÆAB |
239 | /* |
240 | * This branch *must* happen after setting from the | |
241 | * opt->pattern_type_option above, we don't want | |
242 | * grep.extendedRegexp to override grep.patternType! | |
243 | */ | |
8465541e JH |
244 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); |
245 | } | |
246 | ||
fc456751 RS |
247 | static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, |
248 | const char *origin, int no, | |
249 | enum grep_pat_token t, | |
250 | enum grep_header_field field) | |
a4d7d2c6 JH |
251 | { |
252 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
526a858a | 253 | p->pattern = xmemdupz(pat, patlen); |
fc456751 RS |
254 | p->patternlen = patlen; |
255 | p->origin = origin; | |
256 | p->no = no; | |
257 | p->token = t; | |
a4d7d2c6 | 258 | p->field = field; |
fc456751 RS |
259 | return p; |
260 | } | |
261 | ||
2b3873ff RS |
262 | static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p) |
263 | { | |
264 | **tail = p; | |
265 | *tail = &p->next; | |
a4d7d2c6 | 266 | p->next = NULL; |
526a858a RS |
267 | |
268 | switch (p->token) { | |
269 | case GREP_PATTERN: /* atom */ | |
270 | case GREP_PATTERN_HEAD: | |
271 | case GREP_PATTERN_BODY: | |
272 | for (;;) { | |
273 | struct grep_pat *new_pat; | |
274 | size_t len = 0; | |
275 | char *cp = p->pattern + p->patternlen, *nl = NULL; | |
276 | while (++len <= p->patternlen) { | |
277 | if (*(--cp) == '\n') { | |
278 | nl = cp; | |
279 | break; | |
280 | } | |
281 | } | |
282 | if (!nl) | |
283 | break; | |
284 | new_pat = create_grep_pat(nl + 1, len - 1, p->origin, | |
285 | p->no, p->token, p->field); | |
286 | new_pat->next = p->next; | |
287 | if (!p->next) | |
288 | *tail = &new_pat->next; | |
289 | p->next = new_pat; | |
290 | *nl = '\0'; | |
291 | p->patternlen -= len; | |
292 | } | |
293 | break; | |
294 | default: | |
295 | break; | |
296 | } | |
2b3873ff RS |
297 | } |
298 | ||
fc456751 RS |
299 | void append_header_grep_pattern(struct grep_opt *opt, |
300 | enum grep_header_field field, const char *pat) | |
301 | { | |
302 | struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, | |
303 | GREP_PATTERN_HEAD, field); | |
baa6378f JH |
304 | if (field == GREP_HEADER_REFLOG) |
305 | opt->use_reflog_filter = 1; | |
2b3873ff | 306 | do_append_grep_pat(&opt->header_tail, p); |
a4d7d2c6 JH |
307 | } |
308 | ||
83b5d2f5 JH |
309 | void append_grep_pattern(struct grep_opt *opt, const char *pat, |
310 | const char *origin, int no, enum grep_pat_token t) | |
ed40a095 RS |
311 | { |
312 | append_grep_pat(opt, pat, strlen(pat), origin, no, t); | |
313 | } | |
314 | ||
315 | void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, | |
316 | const char *origin, int no, enum grep_pat_token t) | |
83b5d2f5 | 317 | { |
fc456751 | 318 | struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0); |
2b3873ff | 319 | do_append_grep_pat(&opt->pattern_tail, p); |
83b5d2f5 JH |
320 | } |
321 | ||
5b594f45 FK |
322 | struct grep_opt *grep_opt_dup(const struct grep_opt *opt) |
323 | { | |
324 | struct grep_pat *pat; | |
325 | struct grep_opt *ret = xmalloc(sizeof(struct grep_opt)); | |
326 | *ret = *opt; | |
327 | ||
328 | ret->pattern_list = NULL; | |
329 | ret->pattern_tail = &ret->pattern_list; | |
330 | ||
331 | for(pat = opt->pattern_list; pat != NULL; pat = pat->next) | |
332 | { | |
333 | if(pat->token == GREP_PATTERN_HEAD) | |
334 | append_header_grep_pattern(ret, pat->field, | |
335 | pat->pattern); | |
336 | else | |
ed40a095 RS |
337 | append_grep_pat(ret, pat->pattern, pat->patternlen, |
338 | pat->origin, pat->no, pat->token); | |
5b594f45 FK |
339 | } |
340 | ||
341 | return ret; | |
342 | } | |
343 | ||
a30c148a MK |
344 | static NORETURN void compile_regexp_failed(const struct grep_pat *p, |
345 | const char *error) | |
346 | { | |
347 | char where[1024]; | |
348 | ||
349 | if (p->no) | |
19bdd3e7 | 350 | xsnprintf(where, sizeof(where), "In '%s' at %d, ", p->origin, p->no); |
a30c148a | 351 | else if (p->origin) |
19bdd3e7 | 352 | xsnprintf(where, sizeof(where), "%s, ", p->origin); |
a30c148a MK |
353 | else |
354 | where[0] = 0; | |
355 | ||
356 | die("%s'%s': %s", where, p->pattern, error); | |
357 | } | |
358 | ||
b65abcaf ÆAB |
359 | static int is_fixed(const char *s, size_t len) |
360 | { | |
361 | size_t i; | |
362 | ||
363 | for (i = 0; i < len; i++) { | |
364 | if (is_regex_special(s[i])) | |
365 | return 0; | |
366 | } | |
367 | ||
368 | return 1; | |
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 | 378 | if (opt->ignore_case) { |
44570188 | 379 | if (!opt->ignore_locale && has_non_ascii(p->pattern)) |
6d4b5747 | 380 | p->pcre1_tables = pcre_maketables(); |
63e7e9d8 | 381 | options |= PCRE_CASELESS; |
9d9babb8 | 382 | } |
44570188 | 383 | if (!opt->ignore_locale && is_utf8_locale() && has_non_ascii(p->pattern)) |
18547aac | 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 | 396 | pcre_config(PCRE_CONFIG_JIT, &p->pcre1_jit_on); |
04bef50c | 397 | if (p->pcre1_jit_on) { |
fbaceaac ÆAB |
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); | |
fbaceaac ÆAB |
402 | } |
403 | #endif | |
63e7e9d8 MK |
404 | } |
405 | ||
6d4b5747 | 406 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
407 | regmatch_t *match, int eflags) |
408 | { | |
409 | int ovector[30], ret, flags = 0; | |
410 | ||
411 | if (eflags & REG_NOTBOL) | |
412 | flags |= PCRE_NOTBOL; | |
413 | ||
e87de7ca | 414 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
415 | if (p->pcre1_jit_on) { |
416 | ret = pcre_jit_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
417 | eol - line, 0, flags, ovector, | |
418 | ARRAY_SIZE(ovector), p->pcre1_jit_stack); | |
419 | } else | |
420 | #endif | |
421 | { | |
422 | ret = pcre_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
423 | eol - line, 0, flags, ovector, | |
424 | ARRAY_SIZE(ovector)); | |
425 | } | |
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); |
e87de7ca | 441 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
442 | if (p->pcre1_jit_on) { |
443 | pcre_free_study(p->pcre1_extra_info); | |
444 | pcre_jit_stack_free(p->pcre1_jit_stack); | |
445 | } else | |
446 | #endif | |
447 | { | |
448 | pcre_free(p->pcre1_extra_info); | |
449 | } | |
6d4b5747 | 450 | pcre_free((void *)p->pcre1_tables); |
63e7e9d8 | 451 | } |
3485bea1 | 452 | #else /* !USE_LIBPCRE1 */ |
6d4b5747 | 453 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
454 | { |
455 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
456 | } | |
457 | ||
6d4b5747 | 458 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
459 | regmatch_t *match, int eflags) |
460 | { | |
461 | return 1; | |
462 | } | |
463 | ||
6d4b5747 | 464 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 MK |
465 | { |
466 | } | |
3485bea1 | 467 | #endif /* !USE_LIBPCRE1 */ |
63e7e9d8 | 468 | |
94da9193 ÆAB |
469 | #ifdef USE_LIBPCRE2 |
470 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
471 | { | |
472 | int error; | |
473 | PCRE2_UCHAR errbuf[256]; | |
474 | PCRE2_SIZE erroffset; | |
475 | int options = PCRE2_MULTILINE; | |
476 | const uint8_t *character_tables = NULL; | |
477 | int jitret; | |
a25b9085 ÆAB |
478 | int patinforet; |
479 | size_t jitsizearg; | |
94da9193 ÆAB |
480 | |
481 | assert(opt->pcre2); | |
482 | ||
483 | p->pcre2_compile_context = NULL; | |
484 | ||
485 | if (opt->ignore_case) { | |
44570188 | 486 | if (!opt->ignore_locale && has_non_ascii(p->pattern)) { |
94da9193 ÆAB |
487 | character_tables = pcre2_maketables(NULL); |
488 | p->pcre2_compile_context = pcre2_compile_context_create(NULL); | |
489 | pcre2_set_character_tables(p->pcre2_compile_context, character_tables); | |
490 | } | |
491 | options |= PCRE2_CASELESS; | |
492 | } | |
44570188 | 493 | if (!opt->ignore_locale && is_utf8_locale() && has_non_ascii(p->pattern)) |
94da9193 ÆAB |
494 | options |= PCRE2_UTF; |
495 | ||
496 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
497 | p->patternlen, options, &error, &erroffset, | |
498 | p->pcre2_compile_context); | |
499 | ||
500 | if (p->pcre2_pattern) { | |
501 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL); | |
502 | if (!p->pcre2_match_data) | |
503 | die("Couldn't allocate PCRE2 match data"); | |
504 | } else { | |
505 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
506 | compile_regexp_failed(p, (const char *)&errbuf); | |
507 | } | |
508 | ||
509 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
04bef50c | 510 | if (p->pcre2_jit_on) { |
94da9193 ÆAB |
511 | jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE); |
512 | if (jitret) | |
513 | die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret); | |
a25b9085 ÆAB |
514 | |
515 | /* | |
516 | * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just | |
517 | * tells us whether the library itself supports JIT, | |
518 | * but to see whether we're going to be actually using | |
519 | * JIT we need to extract PCRE2_INFO_JITSIZE from the | |
520 | * pattern *after* we do pcre2_jit_compile() above. | |
521 | * | |
522 | * This is because if the pattern contains the | |
523 | * (*NO_JIT) verb (see pcre2syntax(3)) | |
524 | * pcre2_jit_compile() will exit early with 0. If we | |
525 | * then proceed to call pcre2_jit_match() further down | |
526 | * the line instead of pcre2_match() we'll either | |
527 | * segfault (pre PCRE 10.31) or run into a fatal error | |
528 | * (post PCRE2 10.31) | |
529 | */ | |
530 | patinforet = pcre2_pattern_info(p->pcre2_pattern, PCRE2_INFO_JITSIZE, &jitsizearg); | |
531 | if (patinforet) | |
532 | BUG("pcre2_pattern_info() failed: %d", patinforet); | |
533 | if (jitsizearg == 0) { | |
534 | p->pcre2_jit_on = 0; | |
535 | return; | |
536 | } | |
94da9193 ÆAB |
537 | } |
538 | } | |
539 | ||
540 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
541 | regmatch_t *match, int eflags) | |
542 | { | |
543 | int ret, flags = 0; | |
544 | PCRE2_SIZE *ovector; | |
545 | PCRE2_UCHAR errbuf[256]; | |
546 | ||
547 | if (eflags & REG_NOTBOL) | |
548 | flags |= PCRE2_NOTBOL; | |
549 | ||
550 | if (p->pcre2_jit_on) | |
551 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
552 | eol - line, 0, flags, p->pcre2_match_data, | |
553 | NULL); | |
554 | else | |
555 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
556 | eol - line, 0, flags, p->pcre2_match_data, | |
557 | NULL); | |
558 | ||
559 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
560 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
561 | die("%s failed with error code %d: %s", | |
562 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
563 | errbuf); | |
564 | } | |
565 | if (ret > 0) { | |
566 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
567 | ret = 0; | |
568 | match->rm_so = (int)ovector[0]; | |
569 | match->rm_eo = (int)ovector[1]; | |
570 | } | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
575 | static void free_pcre2_pattern(struct grep_pat *p) | |
576 | { | |
577 | pcre2_compile_context_free(p->pcre2_compile_context); | |
578 | pcre2_code_free(p->pcre2_pattern); | |
579 | pcre2_match_data_free(p->pcre2_match_data); | |
94da9193 ÆAB |
580 | } |
581 | #else /* !USE_LIBPCRE2 */ | |
582 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
583 | { | |
584 | /* | |
585 | * Unreachable until USE_LIBPCRE2 becomes synonymous with | |
586 | * USE_LIBPCRE. See the sibling comment in | |
587 | * grep_set_pattern_type_option(). | |
588 | */ | |
589 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
590 | } | |
591 | ||
592 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
593 | regmatch_t *match, int eflags) | |
594 | { | |
595 | return 1; | |
596 | } | |
597 | ||
598 | static void free_pcre2_pattern(struct grep_pat *p) | |
599 | { | |
600 | } | |
94da9193 | 601 | |
793dc676 NTND |
602 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
603 | { | |
604 | struct strbuf sb = STRBUF_INIT; | |
605 | int err; | |
1ceababc | 606 | int regflags = 0; |
793dc676 NTND |
607 | |
608 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
609 | if (opt->ignore_case) |
610 | regflags |= REG_ICASE; | |
611 | err = regcomp(&p->regexp, sb.buf, regflags); | |
612 | if (opt->debug) | |
613 | fprintf(stderr, "fixed %s\n", sb.buf); | |
614 | strbuf_release(&sb); | |
615 | if (err) { | |
616 | char errbuf[1024]; | |
617 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
793dc676 NTND |
618 | compile_regexp_failed(p, errbuf); |
619 | } | |
620 | } | |
b65abcaf | 621 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 622 | |
83b5d2f5 JH |
623 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
624 | { | |
c822255c | 625 | int err; |
07a3d411 | 626 | int regflags = REG_NEWLINE; |
b65abcaf | 627 | int pat_is_fixed; |
c822255c | 628 | |
d7eb527d | 629 | p->word_regexp = opt->word_regexp; |
5183bf67 | 630 | p->ignore_case = opt->ignore_case; |
48de2a76 | 631 | p->fixed = opt->fixed; |
d7eb527d | 632 | |
45d1f37c ÆAB |
633 | if (memchr(p->pattern, 0, p->patternlen) && !opt->pcre2) |
634 | die(_("given pattern contains NULL byte (via -f <file>). This is only supported with -P under PCRE v2")); | |
635 | ||
b65abcaf ÆAB |
636 | pat_is_fixed = is_fixed(p->pattern, p->patternlen); |
637 | if (opt->fixed || pat_is_fixed) { | |
638 | #ifdef USE_LIBPCRE2 | |
639 | opt->pcre2 = 1; | |
640 | if (pat_is_fixed) { | |
641 | compile_pcre2_pattern(p, opt); | |
642 | } else { | |
643 | /* | |
644 | * E.g. t7811-grep-open.sh relies on the | |
645 | * pattern being restored. | |
646 | */ | |
647 | char *old_pattern = p->pattern; | |
648 | size_t old_patternlen = p->patternlen; | |
649 | struct strbuf sb = STRBUF_INIT; | |
650 | ||
651 | /* | |
652 | * There is the PCRE2_LITERAL flag, but it's | |
653 | * only in PCRE v2 10.30 and later. Needing to | |
654 | * ifdef our way around that and dealing with | |
655 | * it + PCRE2_MULTILINE being an error is more | |
656 | * complex than just quoting this ourselves. | |
657 | */ | |
658 | strbuf_add(&sb, "\\Q", 2); | |
659 | strbuf_add(&sb, p->pattern, p->patternlen); | |
660 | strbuf_add(&sb, "\\E", 2); | |
661 | ||
662 | p->pattern = sb.buf; | |
663 | p->patternlen = sb.len; | |
664 | compile_pcre2_pattern(p, opt); | |
665 | p->pattern = old_pattern; | |
666 | p->patternlen = old_patternlen; | |
667 | strbuf_release(&sb); | |
668 | } | |
669 | #else /* !USE_LIBPCRE2 */ | |
793dc676 | 670 | compile_fixed_regexp(p, opt); |
b65abcaf | 671 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 672 | return; |
9eceddee | 673 | } |
c822255c | 674 | |
94da9193 ÆAB |
675 | if (opt->pcre2) { |
676 | compile_pcre2_pattern(p, opt); | |
677 | return; | |
678 | } | |
679 | ||
6d4b5747 ÆAB |
680 | if (opt->pcre1) { |
681 | compile_pcre1_regexp(p, opt); | |
63e7e9d8 MK |
682 | return; |
683 | } | |
684 | ||
07a3d411 ÆAB |
685 | if (p->ignore_case) |
686 | regflags |= REG_ICASE; | |
687 | if (opt->extended_regexp_option) | |
688 | regflags |= REG_EXTENDED; | |
689 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
690 | if (err) { |
691 | char errbuf[1024]; | |
83b5d2f5 | 692 | regerror(err, &p->regexp, errbuf, 1024); |
a30c148a | 693 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
694 | } |
695 | } | |
696 | ||
0ab7befa | 697 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
698 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
699 | { | |
700 | struct grep_pat *p; | |
701 | struct grep_expr *x; | |
702 | ||
703 | p = *list; | |
c922b01f LT |
704 | if (!p) |
705 | return NULL; | |
83b5d2f5 JH |
706 | switch (p->token) { |
707 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
708 | case GREP_PATTERN_HEAD: |
709 | case GREP_PATTERN_BODY: | |
83b5d2f5 JH |
710 | x = xcalloc(1, sizeof (struct grep_expr)); |
711 | x->node = GREP_NODE_ATOM; | |
712 | x->u.atom = p; | |
713 | *list = p->next; | |
714 | return x; | |
715 | case GREP_OPEN_PAREN: | |
716 | *list = p->next; | |
0ab7befa | 717 | x = compile_pattern_or(list); |
83b5d2f5 JH |
718 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
719 | die("unmatched parenthesis"); | |
720 | *list = (*list)->next; | |
721 | return x; | |
722 | default: | |
723 | return NULL; | |
724 | } | |
725 | } | |
726 | ||
727 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
728 | { | |
729 | struct grep_pat *p; | |
730 | struct grep_expr *x; | |
731 | ||
732 | p = *list; | |
c922b01f LT |
733 | if (!p) |
734 | return NULL; | |
83b5d2f5 JH |
735 | switch (p->token) { |
736 | case GREP_NOT: | |
737 | if (!p->next) | |
738 | die("--not not followed by pattern expression"); | |
739 | *list = p->next; | |
740 | x = xcalloc(1, sizeof (struct grep_expr)); | |
741 | x->node = GREP_NODE_NOT; | |
742 | x->u.unary = compile_pattern_not(list); | |
743 | if (!x->u.unary) | |
744 | die("--not followed by non pattern expression"); | |
745 | return x; | |
746 | default: | |
747 | return compile_pattern_atom(list); | |
748 | } | |
749 | } | |
750 | ||
751 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
752 | { | |
753 | struct grep_pat *p; | |
754 | struct grep_expr *x, *y, *z; | |
755 | ||
756 | x = compile_pattern_not(list); | |
757 | p = *list; | |
758 | if (p && p->token == GREP_AND) { | |
759 | if (!p->next) | |
760 | die("--and not followed by pattern expression"); | |
761 | *list = p->next; | |
762 | y = compile_pattern_and(list); | |
763 | if (!y) | |
764 | die("--and not followed by pattern expression"); | |
765 | z = xcalloc(1, sizeof (struct grep_expr)); | |
766 | z->node = GREP_NODE_AND; | |
767 | z->u.binary.left = x; | |
768 | z->u.binary.right = y; | |
769 | return z; | |
770 | } | |
771 | return x; | |
772 | } | |
773 | ||
774 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
775 | { | |
776 | struct grep_pat *p; | |
777 | struct grep_expr *x, *y, *z; | |
778 | ||
779 | x = compile_pattern_and(list); | |
780 | p = *list; | |
781 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
782 | y = compile_pattern_or(list); | |
783 | if (!y) | |
784 | die("not a pattern expression %s", p->pattern); | |
785 | z = xcalloc(1, sizeof (struct grep_expr)); | |
786 | z->node = GREP_NODE_OR; | |
787 | z->u.binary.left = x; | |
788 | z->u.binary.right = y; | |
789 | return z; | |
790 | } | |
791 | return x; | |
792 | } | |
793 | ||
794 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
795 | { | |
796 | return compile_pattern_or(list); | |
797 | } | |
798 | ||
17bf35a3 JH |
799 | static void indent(int in) |
800 | { | |
801 | while (in-- > 0) | |
802 | fputc(' ', stderr); | |
803 | } | |
804 | ||
805 | static void dump_grep_pat(struct grep_pat *p) | |
806 | { | |
807 | switch (p->token) { | |
808 | case GREP_AND: fprintf(stderr, "*and*"); break; | |
809 | case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; | |
810 | case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; | |
811 | case GREP_NOT: fprintf(stderr, "*not*"); break; | |
812 | case GREP_OR: fprintf(stderr, "*or*"); break; | |
813 | ||
814 | case GREP_PATTERN: fprintf(stderr, "pattern"); break; | |
815 | case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; | |
816 | case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; | |
817 | } | |
818 | ||
819 | switch (p->token) { | |
820 | default: break; | |
821 | case GREP_PATTERN_HEAD: | |
822 | fprintf(stderr, "<head %d>", p->field); break; | |
823 | case GREP_PATTERN_BODY: | |
824 | fprintf(stderr, "<body>"); break; | |
825 | } | |
826 | switch (p->token) { | |
827 | default: break; | |
828 | case GREP_PATTERN_HEAD: | |
829 | case GREP_PATTERN_BODY: | |
830 | case GREP_PATTERN: | |
831 | fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); | |
832 | break; | |
833 | } | |
834 | fputc('\n', stderr); | |
835 | } | |
836 | ||
837 | static void dump_grep_expression_1(struct grep_expr *x, int in) | |
838 | { | |
839 | indent(in); | |
840 | switch (x->node) { | |
841 | case GREP_NODE_TRUE: | |
842 | fprintf(stderr, "true\n"); | |
843 | break; | |
844 | case GREP_NODE_ATOM: | |
845 | dump_grep_pat(x->u.atom); | |
846 | break; | |
847 | case GREP_NODE_NOT: | |
848 | fprintf(stderr, "(not\n"); | |
849 | dump_grep_expression_1(x->u.unary, in+1); | |
850 | indent(in); | |
851 | fprintf(stderr, ")\n"); | |
852 | break; | |
853 | case GREP_NODE_AND: | |
854 | fprintf(stderr, "(and\n"); | |
855 | dump_grep_expression_1(x->u.binary.left, in+1); | |
856 | dump_grep_expression_1(x->u.binary.right, in+1); | |
857 | indent(in); | |
858 | fprintf(stderr, ")\n"); | |
859 | break; | |
860 | case GREP_NODE_OR: | |
861 | fprintf(stderr, "(or\n"); | |
862 | dump_grep_expression_1(x->u.binary.left, in+1); | |
863 | dump_grep_expression_1(x->u.binary.right, in+1); | |
864 | indent(in); | |
865 | fprintf(stderr, ")\n"); | |
866 | break; | |
867 | } | |
868 | } | |
869 | ||
07a7d656 | 870 | static void dump_grep_expression(struct grep_opt *opt) |
17bf35a3 JH |
871 | { |
872 | struct grep_expr *x = opt->pattern_expression; | |
873 | ||
874 | if (opt->all_match) | |
875 | fprintf(stderr, "[all-match]\n"); | |
876 | dump_grep_expression_1(x, 0); | |
877 | fflush(NULL); | |
878 | } | |
879 | ||
5aaeb733 JH |
880 | static struct grep_expr *grep_true_expr(void) |
881 | { | |
882 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
883 | z->node = GREP_NODE_TRUE; | |
884 | return z; | |
885 | } | |
886 | ||
887 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) | |
888 | { | |
889 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
890 | z->node = GREP_NODE_OR; | |
891 | z->u.binary.left = left; | |
892 | z->u.binary.right = right; | |
893 | return z; | |
894 | } | |
895 | ||
95ce9ce2 | 896 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
897 | { |
898 | struct grep_pat *p; | |
95ce9ce2 | 899 | struct grep_expr *header_expr; |
5aaeb733 JH |
900 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
901 | enum grep_header_field fld; | |
83b5d2f5 | 902 | |
95ce9ce2 JH |
903 | if (!opt->header_list) |
904 | return NULL; | |
2385f246 | 905 | |
95ce9ce2 JH |
906 | for (p = opt->header_list; p; p = p->next) { |
907 | if (p->token != GREP_PATTERN_HEAD) | |
033abf97 | 908 | BUG("a non-header pattern in grep header list."); |
3ce3ffb8 AP |
909 | if (p->field < GREP_HEADER_FIELD_MIN || |
910 | GREP_HEADER_FIELD_MAX <= p->field) | |
033abf97 | 911 | BUG("unknown header field %d", p->field); |
95ce9ce2 | 912 | compile_regexp(p, opt); |
80235ba7 | 913 | } |
5aaeb733 JH |
914 | |
915 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
916 | header_group[fld] = NULL; | |
917 | ||
918 | for (p = opt->header_list; p; p = p->next) { | |
919 | struct grep_expr *h; | |
920 | struct grep_pat *pp = p; | |
921 | ||
922 | h = compile_pattern_atom(&pp); | |
923 | if (!h || pp != p->next) | |
033abf97 | 924 | BUG("malformed header expr"); |
5aaeb733 JH |
925 | if (!header_group[p->field]) { |
926 | header_group[p->field] = h; | |
927 | continue; | |
928 | } | |
929 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
930 | } | |
931 | ||
932 | header_expr = NULL; | |
933 | ||
934 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
935 | if (!header_group[fld]) | |
936 | continue; | |
937 | if (!header_expr) | |
938 | header_expr = grep_true_expr(); | |
939 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
940 | } | |
95ce9ce2 JH |
941 | return header_expr; |
942 | } | |
943 | ||
13e4fc7e JH |
944 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
945 | { | |
946 | struct grep_expr *z = x; | |
947 | ||
948 | while (x) { | |
949 | assert(x->node == GREP_NODE_OR); | |
950 | if (x->u.binary.right && | |
951 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
952 | x->u.binary.right = y; | |
953 | break; | |
954 | } | |
955 | x = x->u.binary.right; | |
956 | } | |
957 | return z; | |
958 | } | |
959 | ||
17bf35a3 | 960 | static void compile_grep_patterns_real(struct grep_opt *opt) |
95ce9ce2 JH |
961 | { |
962 | struct grep_pat *p; | |
963 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 964 | |
83b5d2f5 | 965 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
966 | switch (p->token) { |
967 | case GREP_PATTERN: /* atom */ | |
968 | case GREP_PATTERN_HEAD: | |
969 | case GREP_PATTERN_BODY: | |
c822255c | 970 | compile_regexp(p, opt); |
480c1ca6 JH |
971 | break; |
972 | default: | |
83b5d2f5 | 973 | opt->extended = 1; |
480c1ca6 JH |
974 | break; |
975 | } | |
83b5d2f5 JH |
976 | } |
977 | ||
80235ba7 JH |
978 | if (opt->all_match || header_expr) |
979 | opt->extended = 1; | |
17bf35a3 | 980 | else if (!opt->extended && !opt->debug) |
83b5d2f5 JH |
981 | return; |
982 | ||
83b5d2f5 | 983 | p = opt->pattern_list; |
ba150a3f MB |
984 | if (p) |
985 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
986 | if (p) |
987 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 JH |
988 | |
989 | if (!header_expr) | |
990 | return; | |
991 | ||
5aaeb733 | 992 | if (!opt->pattern_expression) |
80235ba7 | 993 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
994 | else if (opt->all_match) |
995 | opt->pattern_expression = grep_splice_or(header_expr, | |
996 | opt->pattern_expression); | |
5aaeb733 JH |
997 | else |
998 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
999 | header_expr); | |
80235ba7 | 1000 | opt->all_match = 1; |
83b5d2f5 JH |
1001 | } |
1002 | ||
17bf35a3 JH |
1003 | void compile_grep_patterns(struct grep_opt *opt) |
1004 | { | |
1005 | compile_grep_patterns_real(opt); | |
1006 | if (opt->debug) | |
1007 | dump_grep_expression(opt); | |
1008 | } | |
1009 | ||
b48fb5b6 JH |
1010 | static void free_pattern_expr(struct grep_expr *x) |
1011 | { | |
1012 | switch (x->node) { | |
5aaeb733 | 1013 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
1014 | case GREP_NODE_ATOM: |
1015 | break; | |
1016 | case GREP_NODE_NOT: | |
1017 | free_pattern_expr(x->u.unary); | |
1018 | break; | |
1019 | case GREP_NODE_AND: | |
1020 | case GREP_NODE_OR: | |
1021 | free_pattern_expr(x->u.binary.left); | |
1022 | free_pattern_expr(x->u.binary.right); | |
1023 | break; | |
1024 | } | |
1025 | free(x); | |
1026 | } | |
1027 | ||
1028 | void free_grep_patterns(struct grep_opt *opt) | |
1029 | { | |
1030 | struct grep_pat *p, *n; | |
1031 | ||
1032 | for (p = opt->pattern_list; p; p = n) { | |
1033 | n = p->next; | |
1034 | switch (p->token) { | |
1035 | case GREP_PATTERN: /* atom */ | |
1036 | case GREP_PATTERN_HEAD: | |
1037 | case GREP_PATTERN_BODY: | |
48de2a76 | 1038 | if (p->pcre1_regexp) |
6d4b5747 | 1039 | free_pcre1_regexp(p); |
94da9193 ÆAB |
1040 | else if (p->pcre2_pattern) |
1041 | free_pcre2_pattern(p); | |
63e7e9d8 MK |
1042 | else |
1043 | regfree(&p->regexp); | |
526a858a | 1044 | free(p->pattern); |
b48fb5b6 JH |
1045 | break; |
1046 | default: | |
1047 | break; | |
1048 | } | |
1049 | free(p); | |
1050 | } | |
1051 | ||
1052 | if (!opt->extended) | |
1053 | return; | |
1054 | free_pattern_expr(opt->pattern_expression); | |
1055 | } | |
1056 | ||
83b5d2f5 JH |
1057 | static char *end_of_line(char *cp, unsigned long *left) |
1058 | { | |
1059 | unsigned long l = *left; | |
1060 | while (l && *cp != '\n') { | |
1061 | l--; | |
1062 | cp++; | |
1063 | } | |
1064 | *left = l; | |
1065 | return cp; | |
1066 | } | |
1067 | ||
1068 | static int word_char(char ch) | |
1069 | { | |
1070 | return isalnum(ch) || ch == '_'; | |
1071 | } | |
1072 | ||
55f638bd ML |
1073 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
1074 | const char *color) | |
1075 | { | |
daa0c3d9 | 1076 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
1077 | opt->output(opt, color, strlen(color)); |
1078 | opt->output(opt, data, size); | |
1079 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
1080 | } else | |
1081 | opt->output(opt, data, size); | |
1082 | } | |
1083 | ||
1084 | static void output_sep(struct grep_opt *opt, char sign) | |
1085 | { | |
1086 | if (opt->null_following_name) | |
1087 | opt->output(opt, "\0", 1); | |
1088 | else | |
fa151dc5 | 1089 | output_color(opt, &sign, 1, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
1090 | } |
1091 | ||
83caecca RZ |
1092 | static void show_name(struct grep_opt *opt, const char *name) |
1093 | { | |
fa151dc5 | 1094 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1095 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
1096 | } |
1097 | ||
97e77784 MK |
1098 | static int patmatch(struct grep_pat *p, char *line, char *eol, |
1099 | regmatch_t *match, int eflags) | |
1100 | { | |
1101 | int hit; | |
1102 | ||
48de2a76 | 1103 | if (p->pcre1_regexp) |
6d4b5747 | 1104 | hit = !pcre1match(p, line, eol, match, eflags); |
94da9193 ÆAB |
1105 | else if (p->pcre2_pattern) |
1106 | hit = !pcre2match(p, line, eol, match, eflags); | |
97e77784 | 1107 | else |
b7d36ffc JS |
1108 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
1109 | eflags); | |
97e77784 MK |
1110 | |
1111 | return hit; | |
1112 | } | |
1113 | ||
a4d7d2c6 JH |
1114 | static int strip_timestamp(char *bol, char **eol_p) |
1115 | { | |
1116 | char *eol = *eol_p; | |
1117 | int ch; | |
1118 | ||
1119 | while (bol < --eol) { | |
1120 | if (*eol != '>') | |
1121 | continue; | |
1122 | *eol_p = ++eol; | |
1123 | ch = *eol; | |
1124 | *eol = '\0'; | |
1125 | return ch; | |
1126 | } | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | static struct { | |
1131 | const char *field; | |
1132 | size_t len; | |
1133 | } header_field[] = { | |
1134 | { "author ", 7 }, | |
1135 | { "committer ", 10 }, | |
72fd13f7 | 1136 | { "reflog ", 7 }, |
a4d7d2c6 JH |
1137 | }; |
1138 | ||
d7eb527d | 1139 | static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, |
79212772 RS |
1140 | enum grep_context ctx, |
1141 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
1142 | { |
1143 | int hit = 0; | |
a4d7d2c6 | 1144 | int saved_ch = 0; |
e701fadb | 1145 | const char *start = bol; |
83b5d2f5 | 1146 | |
480c1ca6 JH |
1147 | if ((p->token != GREP_PATTERN) && |
1148 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
1149 | return 0; | |
1150 | ||
a4d7d2c6 JH |
1151 | if (p->token == GREP_PATTERN_HEAD) { |
1152 | const char *field; | |
1153 | size_t len; | |
1154 | assert(p->field < ARRAY_SIZE(header_field)); | |
1155 | field = header_field[p->field].field; | |
1156 | len = header_field[p->field].len; | |
1157 | if (strncmp(bol, field, len)) | |
1158 | return 0; | |
1159 | bol += len; | |
ad4813b3 NTND |
1160 | switch (p->field) { |
1161 | case GREP_HEADER_AUTHOR: | |
1162 | case GREP_HEADER_COMMITTER: | |
1163 | saved_ch = strip_timestamp(bol, &eol); | |
1164 | break; | |
1165 | default: | |
1166 | break; | |
1167 | } | |
a4d7d2c6 JH |
1168 | } |
1169 | ||
83b5d2f5 | 1170 | again: |
97e77784 | 1171 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 1172 | |
d7eb527d | 1173 | if (hit && p->word_regexp) { |
83b5d2f5 | 1174 | if ((pmatch[0].rm_so < 0) || |
84201eae | 1175 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
1176 | (pmatch[0].rm_eo < 0) || |
1177 | (eol - bol) < pmatch[0].rm_eo) | |
1178 | die("regexp returned nonsense"); | |
1179 | ||
1180 | /* Match beginning must be either beginning of the | |
1181 | * line, or at word boundary (i.e. the last char must | |
1182 | * not be a word char). Similarly, match end must be | |
1183 | * either end of the line, or at word boundary | |
1184 | * (i.e. the next char must not be a word char). | |
1185 | */ | |
fb62eb7f | 1186 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
1187 | !word_char(bol[pmatch[0].rm_so-1])) && |
1188 | ((pmatch[0].rm_eo == (eol-bol)) || | |
1189 | !word_char(bol[pmatch[0].rm_eo])) ) | |
1190 | ; | |
1191 | else | |
1192 | hit = 0; | |
1193 | ||
84201eae RS |
1194 | /* Words consist of at least one character. */ |
1195 | if (pmatch->rm_so == pmatch->rm_eo) | |
1196 | hit = 0; | |
1197 | ||
83b5d2f5 JH |
1198 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
1199 | /* There could be more than one match on the | |
1200 | * line, and the first match might not be | |
1201 | * strict word match. But later ones could be! | |
fb62eb7f RS |
1202 | * Forward to the next possible start, i.e. the |
1203 | * next position following a non-word char. | |
83b5d2f5 JH |
1204 | */ |
1205 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
1206 | while (word_char(bol[-1]) && bol < eol) |
1207 | bol++; | |
dbb6a4ad | 1208 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
1209 | if (bol < eol) |
1210 | goto again; | |
83b5d2f5 JH |
1211 | } |
1212 | } | |
a4d7d2c6 JH |
1213 | if (p->token == GREP_PATTERN_HEAD && saved_ch) |
1214 | *eol = saved_ch; | |
e701fadb RS |
1215 | if (hit) { |
1216 | pmatch[0].rm_so += bol - start; | |
1217 | pmatch[0].rm_eo += bol - start; | |
1218 | } | |
83b5d2f5 JH |
1219 | return hit; |
1220 | } | |
1221 | ||
68d686e6 TB |
1222 | static int match_expr_eval(struct grep_opt *opt, struct grep_expr *x, char *bol, |
1223 | char *eol, enum grep_context ctx, ssize_t *col, | |
1224 | ssize_t *icol, int collect_hits) | |
83b5d2f5 | 1225 | { |
0ab7befa JH |
1226 | int h = 0; |
1227 | ||
c922b01f LT |
1228 | if (!x) |
1229 | die("Not a valid grep expression"); | |
83b5d2f5 | 1230 | switch (x->node) { |
5aaeb733 JH |
1231 | case GREP_NODE_TRUE: |
1232 | h = 1; | |
1233 | break; | |
83b5d2f5 | 1234 | case GREP_NODE_ATOM: |
68d686e6 TB |
1235 | { |
1236 | regmatch_t tmp; | |
1237 | h = match_one_pattern(x->u.atom, bol, eol, ctx, | |
1238 | &tmp, 0); | |
1239 | if (h && (*col < 0 || tmp.rm_so < *col)) | |
1240 | *col = tmp.rm_so; | |
1241 | } | |
83b5d2f5 JH |
1242 | break; |
1243 | case GREP_NODE_NOT: | |
68d686e6 TB |
1244 | /* |
1245 | * Upon visiting a GREP_NODE_NOT, col and icol become swapped. | |
1246 | */ | |
1247 | h = !match_expr_eval(opt, x->u.unary, bol, eol, ctx, icol, col, | |
1248 | 0); | |
0ab7befa | 1249 | break; |
83b5d2f5 | 1250 | case GREP_NODE_AND: |
017c0fcf | 1251 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
68d686e6 | 1252 | icol, 0); |
017c0fcf TB |
1253 | if (h || opt->columnnum) { |
1254 | /* | |
1255 | * Don't short-circuit AND when given --column, since a | |
1256 | * NOT earlier in the tree may turn this into an OR. In | |
1257 | * this case, see the below comment. | |
1258 | */ | |
1259 | h &= match_expr_eval(opt, x->u.binary.right, bol, eol, | |
1260 | ctx, col, icol, 0); | |
1261 | } | |
0ab7befa | 1262 | break; |
83b5d2f5 | 1263 | case GREP_NODE_OR: |
017c0fcf TB |
1264 | if (!(collect_hits || opt->columnnum)) { |
1265 | /* | |
1266 | * Don't short-circuit OR when given --column (or | |
1267 | * collecting hits) to ensure we don't skip a later | |
1268 | * child that would produce an earlier match. | |
1269 | */ | |
68d686e6 TB |
1270 | return (match_expr_eval(opt, x->u.binary.left, bol, eol, |
1271 | ctx, col, icol, 0) || | |
1272 | match_expr_eval(opt, x->u.binary.right, bol, | |
1273 | eol, ctx, col, icol, 0)); | |
017c0fcf | 1274 | } |
68d686e6 TB |
1275 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
1276 | icol, 0); | |
017c0fcf TB |
1277 | if (collect_hits) |
1278 | x->u.binary.left->hit |= h; | |
68d686e6 | 1279 | h |= match_expr_eval(opt, x->u.binary.right, bol, eol, ctx, col, |
017c0fcf | 1280 | icol, collect_hits); |
0ab7befa JH |
1281 | break; |
1282 | default: | |
d7530708 | 1283 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1284 | } |
0ab7befa JH |
1285 | if (collect_hits) |
1286 | x->hit |= h; | |
1287 | return h; | |
83b5d2f5 JH |
1288 | } |
1289 | ||
480c1ca6 | 1290 | static int match_expr(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 TB |
1291 | enum grep_context ctx, ssize_t *col, |
1292 | ssize_t *icol, int collect_hits) | |
83b5d2f5 JH |
1293 | { |
1294 | struct grep_expr *x = opt->pattern_expression; | |
68d686e6 | 1295 | return match_expr_eval(opt, x, bol, eol, ctx, col, icol, collect_hits); |
83b5d2f5 JH |
1296 | } |
1297 | ||
480c1ca6 | 1298 | static int match_line(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 | 1299 | ssize_t *col, ssize_t *icol, |
0ab7befa | 1300 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1301 | { |
1302 | struct grep_pat *p; | |
017c0fcf | 1303 | int hit = 0; |
79212772 | 1304 | |
83b5d2f5 | 1305 | if (opt->extended) |
68d686e6 TB |
1306 | return match_expr(opt, bol, eol, ctx, col, icol, |
1307 | collect_hits); | |
0ab7befa JH |
1308 | |
1309 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1310 | for (p = opt->pattern_list; p; p = p->next) { |
68d686e6 TB |
1311 | regmatch_t tmp; |
1312 | if (match_one_pattern(p, bol, eol, ctx, &tmp, 0)) { | |
017c0fcf TB |
1313 | hit |= 1; |
1314 | if (!opt->columnnum) { | |
1315 | /* | |
1316 | * Without --column, any single match on a line | |
1317 | * is enough to know that it needs to be | |
1318 | * printed. With --column, scan _all_ patterns | |
1319 | * to find the earliest. | |
1320 | */ | |
1321 | break; | |
1322 | } | |
1323 | if (*col < 0 || tmp.rm_so < *col) | |
1324 | *col = tmp.rm_so; | |
68d686e6 | 1325 | } |
83b5d2f5 | 1326 | } |
017c0fcf | 1327 | return hit; |
83b5d2f5 JH |
1328 | } |
1329 | ||
7e8f59d5 RS |
1330 | static int match_next_pattern(struct grep_pat *p, char *bol, char *eol, |
1331 | enum grep_context ctx, | |
1332 | regmatch_t *pmatch, int eflags) | |
1333 | { | |
1334 | regmatch_t match; | |
1335 | ||
1336 | if (!match_one_pattern(p, bol, eol, ctx, &match, eflags)) | |
1337 | return 0; | |
1338 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1339 | return 0; | |
1340 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1341 | if (match.rm_so > pmatch->rm_so) | |
1342 | return 1; | |
1343 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1344 | return 1; | |
1345 | } | |
1346 | pmatch->rm_so = match.rm_so; | |
1347 | pmatch->rm_eo = match.rm_eo; | |
1348 | return 1; | |
1349 | } | |
1350 | ||
1351 | static int next_match(struct grep_opt *opt, char *bol, char *eol, | |
1352 | enum grep_context ctx, regmatch_t *pmatch, int eflags) | |
1353 | { | |
1354 | struct grep_pat *p; | |
1355 | int hit = 0; | |
1356 | ||
1357 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1358 | if (bol < eol) { | |
1359 | for (p = opt->pattern_list; p; p = p->next) { | |
1360 | switch (p->token) { | |
1361 | case GREP_PATTERN: /* atom */ | |
1362 | case GREP_PATTERN_HEAD: | |
1363 | case GREP_PATTERN_BODY: | |
1364 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1365 | pmatch, eflags); | |
1366 | break; | |
1367 | default: | |
1368 | break; | |
1369 | } | |
1370 | } | |
1371 | } | |
1372 | return hit; | |
1373 | } | |
1374 | ||
c707ded3 TB |
1375 | static void show_line_header(struct grep_opt *opt, const char *name, |
1376 | unsigned lno, ssize_t cno, char sign) | |
7e8f59d5 | 1377 | { |
1d84f72e | 1378 | if (opt->heading && opt->last_shown == 0) { |
fa151dc5 | 1379 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
1d84f72e RS |
1380 | opt->output(opt, "\n", 1); |
1381 | } | |
5dd06d38 RS |
1382 | opt->last_shown = lno; |
1383 | ||
1d84f72e | 1384 | if (!opt->heading && opt->pathname) { |
fa151dc5 | 1385 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
55f638bd | 1386 | output_sep(opt, sign); |
5b594f45 FK |
1387 | } |
1388 | if (opt->linenum) { | |
1389 | char buf[32]; | |
1a168e5c | 1390 | xsnprintf(buf, sizeof(buf), "%d", lno); |
fa151dc5 | 1391 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]); |
55f638bd | 1392 | output_sep(opt, sign); |
5b594f45 | 1393 | } |
89252cd0 TB |
1394 | /* |
1395 | * Treat 'cno' as the 1-indexed offset from the start of a non-context | |
1396 | * line to its first match. Otherwise, 'cno' is 0 indicating that we are | |
1397 | * being called with a context line. | |
1398 | */ | |
1399 | if (opt->columnnum && cno) { | |
1400 | char buf[32]; | |
1401 | xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno); | |
d036d667 | 1402 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]); |
89252cd0 TB |
1403 | output_sep(opt, sign); |
1404 | } | |
c707ded3 TB |
1405 | } |
1406 | ||
1407 | static void show_line(struct grep_opt *opt, char *bol, char *eol, | |
1408 | const char *name, unsigned lno, ssize_t cno, char sign) | |
1409 | { | |
1410 | int rest = eol - bol; | |
9d8db06e TB |
1411 | const char *match_color = NULL; |
1412 | const char *line_color = NULL; | |
c707ded3 TB |
1413 | |
1414 | if (opt->file_break && opt->last_shown == 0) { | |
1415 | if (opt->show_hunk_mark) | |
1416 | opt->output(opt, "\n", 1); | |
1417 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { | |
1418 | if (opt->last_shown == 0) { | |
1419 | if (opt->show_hunk_mark) { | |
87ece7ce | 1420 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1421 | opt->output(opt, "\n", 1); |
1422 | } | |
1423 | } else if (lno > opt->last_shown + 1) { | |
87ece7ce | 1424 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1425 | opt->output(opt, "\n", 1); |
1426 | } | |
1427 | } | |
9d8db06e TB |
1428 | if (!opt->only_matching) { |
1429 | /* | |
1430 | * In case the line we're being called with contains more than | |
1431 | * one match, leave printing each header to the loop below. | |
1432 | */ | |
1433 | show_line_header(opt, name, lno, cno, sign); | |
1434 | } | |
1435 | if (opt->color || opt->only_matching) { | |
7e8f59d5 RS |
1436 | regmatch_t match; |
1437 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
1438 | int ch = *eol; | |
1439 | int eflags = 0; | |
1440 | ||
9d8db06e TB |
1441 | if (opt->color) { |
1442 | if (sign == ':') | |
87ece7ce | 1443 | match_color = opt->colors[GREP_COLOR_MATCH_SELECTED]; |
9d8db06e | 1444 | else |
87ece7ce | 1445 | match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT]; |
9d8db06e | 1446 | if (sign == ':') |
87ece7ce | 1447 | line_color = opt->colors[GREP_COLOR_SELECTED]; |
9d8db06e | 1448 | else if (sign == '-') |
87ece7ce | 1449 | line_color = opt->colors[GREP_COLOR_CONTEXT]; |
9d8db06e | 1450 | else if (sign == '=') |
87ece7ce | 1451 | line_color = opt->colors[GREP_COLOR_FUNCTION]; |
9d8db06e | 1452 | } |
7e8f59d5 RS |
1453 | *eol = '\0'; |
1454 | while (next_match(opt, bol, eol, ctx, &match, eflags)) { | |
1f5b9cc4 RS |
1455 | if (match.rm_so == match.rm_eo) |
1456 | break; | |
5b594f45 | 1457 | |
9d8db06e TB |
1458 | if (opt->only_matching) |
1459 | show_line_header(opt, name, lno, cno, sign); | |
1460 | else | |
1461 | output_color(opt, bol, match.rm_so, line_color); | |
55f638bd | 1462 | output_color(opt, bol + match.rm_so, |
79a77109 | 1463 | match.rm_eo - match.rm_so, match_color); |
9d8db06e TB |
1464 | if (opt->only_matching) |
1465 | opt->output(opt, "\n", 1); | |
7e8f59d5 | 1466 | bol += match.rm_eo; |
9d8db06e | 1467 | cno += match.rm_eo; |
7e8f59d5 RS |
1468 | rest -= match.rm_eo; |
1469 | eflags = REG_NOTBOL; | |
1470 | } | |
1471 | *eol = ch; | |
1472 | } | |
9d8db06e TB |
1473 | if (!opt->only_matching) { |
1474 | output_color(opt, bol, rest, line_color); | |
1475 | opt->output(opt, "\n", 1); | |
1476 | } | |
7e8f59d5 RS |
1477 | } |
1478 | ||
78db6ea9 JK |
1479 | int grep_use_locks; |
1480 | ||
0579f91d TR |
1481 | /* |
1482 | * This lock protects access to the gitattributes machinery, which is | |
1483 | * not thread-safe. | |
1484 | */ | |
1485 | pthread_mutex_t grep_attr_mutex; | |
1486 | ||
78db6ea9 | 1487 | static inline void grep_attr_lock(void) |
0579f91d | 1488 | { |
78db6ea9 | 1489 | if (grep_use_locks) |
0579f91d TR |
1490 | pthread_mutex_lock(&grep_attr_mutex); |
1491 | } | |
1492 | ||
78db6ea9 | 1493 | static inline void grep_attr_unlock(void) |
0579f91d | 1494 | { |
78db6ea9 | 1495 | if (grep_use_locks) |
0579f91d TR |
1496 | pthread_mutex_unlock(&grep_attr_mutex); |
1497 | } | |
b3aeb285 JK |
1498 | |
1499 | /* | |
1500 | * Same as git_attr_mutex, but protecting the thread-unsafe object db access. | |
1501 | */ | |
1502 | pthread_mutex_t grep_read_mutex; | |
1503 | ||
e1327023 | 1504 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, char *bol, char *eol) |
2944e4e6 | 1505 | { |
60ecac98 | 1506 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1507 | if (xecfg && !xecfg->find_func) { |
acd00ea0 | 1508 | grep_source_load_driver(gs, opt->repo->index); |
94ad9d9e JK |
1509 | if (gs->driver->funcname.pattern) { |
1510 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1511 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1512 | } else { | |
1513 | xecfg = opt->priv = NULL; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | if (xecfg) { | |
60ecac98 RS |
1518 | char buf[1]; |
1519 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1520 | xecfg->find_func_priv) >= 0; | |
1521 | } | |
1522 | ||
2944e4e6 RS |
1523 | if (bol == eol) |
1524 | return 0; | |
1525 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1526 | return 1; | |
1527 | return 0; | |
1528 | } | |
1529 | ||
e1327023 JK |
1530 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1531 | char *bol, unsigned lno) | |
2944e4e6 | 1532 | { |
e1327023 | 1533 | while (bol > gs->buf) { |
2944e4e6 RS |
1534 | char *eol = --bol; |
1535 | ||
e1327023 | 1536 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1537 | bol--; |
1538 | lno--; | |
1539 | ||
1540 | if (lno <= opt->last_shown) | |
1541 | break; | |
1542 | ||
e1327023 | 1543 | if (match_funcname(opt, gs, bol, eol)) { |
89252cd0 | 1544 | show_line(opt, bol, eol, gs->name, lno, 0, '='); |
2944e4e6 RS |
1545 | break; |
1546 | } | |
1547 | } | |
1548 | } | |
1549 | ||
a5dc20b0 RS |
1550 | static int is_empty_line(const char *bol, const char *eol); |
1551 | ||
e1327023 | 1552 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
ba8ea749 | 1553 | char *bol, char *end, unsigned lno) |
49de3216 | 1554 | { |
6653a01b | 1555 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1556 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1557 | |
49de3216 RS |
1558 | if (opt->pre_context < lno) |
1559 | from = lno - opt->pre_context; | |
1560 | if (from <= opt->last_shown) | |
1561 | from = opt->last_shown + 1; | |
6653a01b | 1562 | orig_from = from; |
a5dc20b0 RS |
1563 | if (opt->funcbody) { |
1564 | if (match_funcname(opt, gs, bol, end)) | |
1565 | comment_needed = 1; | |
1566 | else | |
1567 | funcname_needed = 1; | |
6653a01b RS |
1568 | from = opt->last_shown + 1; |
1569 | } | |
49de3216 RS |
1570 | |
1571 | /* Rewind. */ | |
6653a01b | 1572 | while (bol > gs->buf && cur > from) { |
a5dc20b0 | 1573 | char *next_bol = bol; |
2944e4e6 RS |
1574 | char *eol = --bol; |
1575 | ||
e1327023 | 1576 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1577 | bol--; |
1578 | cur--; | |
a5dc20b0 RS |
1579 | if (comment_needed && (is_empty_line(bol, eol) || |
1580 | match_funcname(opt, gs, bol, eol))) { | |
1581 | comment_needed = 0; | |
1582 | from = orig_from; | |
1583 | if (cur < from) { | |
1584 | cur++; | |
1585 | bol = next_bol; | |
1586 | break; | |
1587 | } | |
1588 | } | |
e1327023 | 1589 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1590 | funcname_lno = cur; |
1591 | funcname_needed = 0; | |
a5dc20b0 RS |
1592 | if (opt->funcbody) |
1593 | comment_needed = 1; | |
1594 | else | |
1595 | from = orig_from; | |
2944e4e6 | 1596 | } |
49de3216 RS |
1597 | } |
1598 | ||
2944e4e6 RS |
1599 | /* We need to look even further back to find a function signature. */ |
1600 | if (opt->funcname && funcname_needed) | |
e1327023 | 1601 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1602 | |
49de3216 RS |
1603 | /* Back forward. */ |
1604 | while (cur < lno) { | |
2944e4e6 | 1605 | char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1606 | |
1607 | while (*eol != '\n') | |
1608 | eol++; | |
89252cd0 | 1609 | show_line(opt, bol, eol, gs->name, cur, 0, sign); |
49de3216 RS |
1610 | bol = eol + 1; |
1611 | cur++; | |
1612 | } | |
1613 | } | |
1614 | ||
a26345b6 JH |
1615 | static int should_lookahead(struct grep_opt *opt) |
1616 | { | |
1617 | struct grep_pat *p; | |
1618 | ||
1619 | if (opt->extended) | |
1620 | return 0; /* punt for too complex stuff */ | |
1621 | if (opt->invert) | |
1622 | return 0; | |
1623 | for (p = opt->pattern_list; p; p = p->next) { | |
1624 | if (p->token != GREP_PATTERN) | |
1625 | return 0; /* punt for "header only" and stuff */ | |
1626 | } | |
1627 | return 1; | |
1628 | } | |
1629 | ||
1630 | static int look_ahead(struct grep_opt *opt, | |
1631 | unsigned long *left_p, | |
1632 | unsigned *lno_p, | |
1633 | char **bol_p) | |
1634 | { | |
1635 | unsigned lno = *lno_p; | |
1636 | char *bol = *bol_p; | |
1637 | struct grep_pat *p; | |
1638 | char *sp, *last_bol; | |
1639 | regoff_t earliest = -1; | |
1640 | ||
1641 | for (p = opt->pattern_list; p; p = p->next) { | |
1642 | int hit; | |
1643 | regmatch_t m; | |
1644 | ||
97e77784 | 1645 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1646 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1647 | continue; | |
1648 | if (earliest < 0 || m.rm_so < earliest) | |
1649 | earliest = m.rm_so; | |
1650 | } | |
1651 | ||
1652 | if (earliest < 0) { | |
1653 | *bol_p = bol + *left_p; | |
1654 | *left_p = 0; | |
1655 | return 1; | |
1656 | } | |
1657 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1658 | ; /* find the beginning of the line */ | |
1659 | last_bol = sp; | |
1660 | ||
1661 | for (sp = bol; sp < last_bol; sp++) { | |
1662 | if (*sp == '\n') | |
1663 | lno++; | |
1664 | } | |
1665 | *left_p -= last_bol - bol; | |
1666 | *bol_p = last_bol; | |
1667 | *lno_p = lno; | |
1668 | return 0; | |
1669 | } | |
1670 | ||
38bbc2ea NTND |
1671 | static int fill_textconv_grep(struct repository *r, |
1672 | struct userdiff_driver *driver, | |
335ec3bf JK |
1673 | struct grep_source *gs) |
1674 | { | |
1675 | struct diff_filespec *df; | |
1676 | char *buf; | |
1677 | size_t size; | |
1678 | ||
1679 | if (!driver || !driver->textconv) | |
1680 | return grep_source_load(gs); | |
1681 | ||
1682 | /* | |
1683 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1684 | * have to pretend to be one. If we could unify the grep_source | |
1685 | * and diff_filespec structs, this mess could just go away. | |
1686 | */ | |
1687 | df = alloc_filespec(gs->path); | |
1688 | switch (gs->type) { | |
1c41c82b | 1689 | case GREP_SOURCE_OID: |
335ec3bf JK |
1690 | fill_filespec(df, gs->identifier, 1, 0100644); |
1691 | break; | |
1692 | case GREP_SOURCE_FILE: | |
f9704c2d | 1693 | fill_filespec(df, &null_oid, 0, 0100644); |
335ec3bf JK |
1694 | break; |
1695 | default: | |
033abf97 | 1696 | BUG("attempt to textconv something without a path?"); |
335ec3bf JK |
1697 | } |
1698 | ||
1699 | /* | |
1700 | * fill_textconv is not remotely thread-safe; it may load objects | |
1701 | * behind the scenes, and it modifies the global diff tempfile | |
1702 | * structure. | |
1703 | */ | |
1704 | grep_read_lock(); | |
38bbc2ea | 1705 | size = fill_textconv(r, driver, df, &buf); |
335ec3bf JK |
1706 | grep_read_unlock(); |
1707 | free_filespec(df); | |
1708 | ||
1709 | /* | |
1710 | * The normal fill_textconv usage by the diff machinery would just keep | |
1711 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1712 | * grep code passes around a grep_source and assumes that its "buf" | |
1713 | * pointer is the beginning of the thing we are searching. So let's | |
1714 | * install our textconv'd version into the grep_source, taking care not | |
1715 | * to leak any existing buffer. | |
1716 | */ | |
1717 | grep_source_clear_data(gs); | |
1718 | gs->buf = buf; | |
1719 | gs->size = size; | |
1720 | ||
1721 | return 0; | |
1722 | } | |
1723 | ||
4aa2c475 RS |
1724 | static int is_empty_line(const char *bol, const char *eol) |
1725 | { | |
1726 | while (bol < eol && isspace(*bol)) | |
1727 | bol++; | |
1728 | return bol == eol; | |
1729 | } | |
1730 | ||
e1327023 | 1731 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1732 | { |
e1327023 | 1733 | char *bol; |
4aa2c475 | 1734 | char *peek_bol = NULL; |
e1327023 | 1735 | unsigned long left; |
83b5d2f5 | 1736 | unsigned lno = 1; |
83b5d2f5 | 1737 | unsigned last_hit = 0; |
83b5d2f5 | 1738 | int binary_match_only = 0; |
83b5d2f5 | 1739 | unsigned count = 0; |
a26345b6 | 1740 | int try_lookahead = 0; |
ba8ea749 | 1741 | int show_function = 0; |
335ec3bf | 1742 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1743 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1744 | xdemitconf_t xecfg; |
83b5d2f5 | 1745 | |
de99eb0c ES |
1746 | if (!opt->status_only && gs->name == NULL) |
1747 | BUG("grep call which could print a name requires " | |
1748 | "grep_source.name be non-NULL"); | |
1749 | ||
5b594f45 FK |
1750 | if (!opt->output) |
1751 | opt->output = std_output; | |
1752 | ||
ba8ea749 RS |
1753 | if (opt->pre_context || opt->post_context || opt->file_break || |
1754 | opt->funcbody) { | |
08303c36 RS |
1755 | /* Show hunk marks, except for the first file. */ |
1756 | if (opt->last_shown) | |
1757 | opt->show_hunk_mark = 1; | |
1758 | /* | |
1759 | * If we're using threads then we can't easily identify | |
1760 | * the first file. Always put hunk marks in that case | |
1761 | * and skip the very first one later in work_done(). | |
1762 | */ | |
1763 | if (opt->output != std_output) | |
1764 | opt->show_hunk_mark = 1; | |
1765 | } | |
431d6e7b RS |
1766 | opt->last_shown = 0; |
1767 | ||
335ec3bf | 1768 | if (opt->allow_textconv) { |
acd00ea0 | 1769 | grep_source_load_driver(gs, opt->repo->index); |
335ec3bf JK |
1770 | /* |
1771 | * We might set up the shared textconv cache data here, which | |
1772 | * is not thread-safe. | |
1773 | */ | |
1774 | grep_attr_lock(); | |
bd7ad45b | 1775 | textconv = userdiff_get_textconv(opt->repo, gs->driver); |
335ec3bf JK |
1776 | grep_attr_unlock(); |
1777 | } | |
1778 | ||
1779 | /* | |
1780 | * We know the result of a textconv is text, so we only have to care | |
1781 | * about binary handling if we are not using it. | |
1782 | */ | |
1783 | if (!textconv) { | |
1784 | switch (opt->binary) { | |
1785 | case GREP_BINARY_DEFAULT: | |
acd00ea0 | 1786 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1787 | binary_match_only = 1; |
1788 | break; | |
1789 | case GREP_BINARY_NOMATCH: | |
acd00ea0 | 1790 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1791 | return 0; /* Assume unmatch */ |
1792 | break; | |
1793 | case GREP_BINARY_TEXT: | |
1794 | break; | |
1795 | default: | |
033abf97 | 1796 | BUG("unknown binary handling mode"); |
335ec3bf | 1797 | } |
83b5d2f5 JH |
1798 | } |
1799 | ||
60ecac98 | 1800 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1801 | opt->priv = &xecfg; |
1802 | ||
a26345b6 | 1803 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1804 | |
38bbc2ea | 1805 | if (fill_textconv_grep(opt->repo, textconv, gs) < 0) |
08265798 JK |
1806 | return 0; |
1807 | ||
e1327023 JK |
1808 | bol = gs->buf; |
1809 | left = gs->size; | |
83b5d2f5 JH |
1810 | while (left) { |
1811 | char *eol, ch; | |
0ab7befa | 1812 | int hit; |
89252cd0 | 1813 | ssize_t cno; |
68d686e6 | 1814 | ssize_t col = -1, icol = -1; |
83b5d2f5 | 1815 | |
a26345b6 | 1816 | /* |
8997da38 | 1817 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1818 | * has the next hit; don't call it if we need to do |
1819 | * something more than just skipping the current line | |
1820 | * in response to an unmatch for the current line. E.g. | |
1821 | * inside a post-context window, we will show the current | |
1822 | * line as a context around the previous hit when it | |
1823 | * doesn't hit. | |
1824 | */ | |
1825 | if (try_lookahead | |
1826 | && !(last_hit | |
ba8ea749 RS |
1827 | && (show_function || |
1828 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1829 | && look_ahead(opt, &left, &lno, &bol)) |
1830 | break; | |
83b5d2f5 JH |
1831 | eol = end_of_line(bol, &left); |
1832 | ch = *eol; | |
1833 | *eol = 0; | |
1834 | ||
480c1ca6 JH |
1835 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1836 | ctx = GREP_CONTEXT_BODY; | |
1837 | ||
68d686e6 | 1838 | hit = match_line(opt, bol, eol, &col, &icol, ctx, collect_hits); |
83b5d2f5 JH |
1839 | *eol = ch; |
1840 | ||
0ab7befa JH |
1841 | if (collect_hits) |
1842 | goto next_line; | |
1843 | ||
83b5d2f5 JH |
1844 | /* "grep -v -e foo -e bla" should list lines |
1845 | * that do not have either, so inversion should | |
1846 | * be done outside. | |
1847 | */ | |
1848 | if (opt->invert) | |
1849 | hit = !hit; | |
1850 | if (opt->unmatch_name_only) { | |
1851 | if (hit) | |
1852 | return 0; | |
1853 | goto next_line; | |
1854 | } | |
1855 | if (hit) { | |
1856 | count++; | |
1857 | if (opt->status_only) | |
1858 | return 1; | |
321ffcc0 | 1859 | if (opt->name_only) { |
e1327023 | 1860 | show_name(opt, gs->name); |
321ffcc0 RS |
1861 | return 1; |
1862 | } | |
c30c10cf RS |
1863 | if (opt->count) |
1864 | goto next_line; | |
83b5d2f5 | 1865 | if (binary_match_only) { |
5b594f45 | 1866 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1867 | output_color(opt, gs->name, strlen(gs->name), |
fa151dc5 | 1868 | opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1869 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1870 | return 1; |
1871 | } | |
83b5d2f5 JH |
1872 | /* Hit at this line. If we haven't shown the |
1873 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1874 | */ |
ba8ea749 | 1875 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1876 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1877 | else if (opt->funcname) |
e1327023 | 1878 | show_funcname_line(opt, gs, bol, lno); |
89252cd0 TB |
1879 | cno = opt->invert ? icol : col; |
1880 | if (cno < 0) { | |
1881 | /* | |
1882 | * A negative cno indicates that there was no | |
1883 | * match on the line. We are thus inverted and | |
1884 | * being asked to show all lines that _don't_ | |
1885 | * match a given expression. Therefore, set cno | |
1886 | * to 0 to suggest the whole line matches. | |
1887 | */ | |
1888 | cno = 0; | |
1889 | } | |
1890 | show_line(opt, bol, eol, gs->name, lno, cno + 1, ':'); | |
5dd06d38 | 1891 | last_hit = lno; |
ba8ea749 RS |
1892 | if (opt->funcbody) |
1893 | show_function = 1; | |
1894 | goto next_line; | |
83b5d2f5 | 1895 | } |
4aa2c475 RS |
1896 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1897 | unsigned long peek_left = left; | |
1898 | char *peek_eol = eol; | |
1899 | ||
1900 | /* | |
1901 | * Trailing empty lines are not interesting. | |
1902 | * Peek past them to see if they belong to the | |
1903 | * body of the current function. | |
1904 | */ | |
1905 | peek_bol = bol; | |
1906 | while (is_empty_line(peek_bol, peek_eol)) { | |
1907 | peek_bol = peek_eol + 1; | |
1908 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1909 | } | |
1910 | ||
1911 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1912 | show_function = 0; | |
1913 | } | |
ba8ea749 RS |
1914 | if (show_function || |
1915 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1916 | /* If the last hit is within the post context, |
1917 | * we need to show this line. | |
1918 | */ | |
89252cd0 | 1919 | show_line(opt, bol, eol, gs->name, lno, col + 1, '-'); |
83b5d2f5 | 1920 | } |
83b5d2f5 JH |
1921 | |
1922 | next_line: | |
1923 | bol = eol + 1; | |
1924 | if (!left) | |
1925 | break; | |
1926 | left--; | |
1927 | lno++; | |
1928 | } | |
1929 | ||
0ab7befa JH |
1930 | if (collect_hits) |
1931 | return 0; | |
b48fb5b6 | 1932 | |
83b5d2f5 | 1933 | if (opt->status_only) |
e1f68c66 | 1934 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1935 | if (opt->unmatch_name_only) { |
1936 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1937 | show_name(opt, gs->name); |
83b5d2f5 JH |
1938 | return 1; |
1939 | } | |
1940 | ||
60ecac98 RS |
1941 | xdiff_clear_find_func(&xecfg); |
1942 | opt->priv = NULL; | |
1943 | ||
83b5d2f5 JH |
1944 | /* NEEDSWORK: |
1945 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1946 | * which feels mostly useless but sometimes useful. Maybe | |
1947 | * make it another option? For now suppress them. | |
1948 | */ | |
5b594f45 FK |
1949 | if (opt->count && count) { |
1950 | char buf[32]; | |
f76d947a RS |
1951 | if (opt->pathname) { |
1952 | output_color(opt, gs->name, strlen(gs->name), | |
fa151dc5 | 1953 | opt->colors[GREP_COLOR_FILENAME]); |
f76d947a RS |
1954 | output_sep(opt, ':'); |
1955 | } | |
1a168e5c | 1956 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 1957 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 1958 | return 1; |
5b594f45 | 1959 | } |
83b5d2f5 JH |
1960 | return !!last_hit; |
1961 | } | |
1962 | ||
0ab7befa JH |
1963 | static void clr_hit_marker(struct grep_expr *x) |
1964 | { | |
1965 | /* All-hit markers are meaningful only at the very top level | |
1966 | * OR node. | |
1967 | */ | |
1968 | while (1) { | |
1969 | x->hit = 0; | |
1970 | if (x->node != GREP_NODE_OR) | |
1971 | return; | |
1972 | x->u.binary.left->hit = 0; | |
1973 | x = x->u.binary.right; | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | static int chk_hit_marker(struct grep_expr *x) | |
1978 | { | |
1979 | /* Top level nodes have hit markers. See if they all are hits */ | |
1980 | while (1) { | |
1981 | if (x->node != GREP_NODE_OR) | |
1982 | return x->hit; | |
1983 | if (!x->u.binary.left->hit) | |
1984 | return 0; | |
1985 | x = x->u.binary.right; | |
1986 | } | |
1987 | } | |
1988 | ||
e1327023 | 1989 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
1990 | { |
1991 | /* | |
1992 | * we do not have to do the two-pass grep when we do not check | |
1993 | * buffer-wide "all-match". | |
1994 | */ | |
1995 | if (!opt->all_match) | |
e1327023 | 1996 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
1997 | |
1998 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
1999 | * We first clear hit markers from them. | |
2000 | */ | |
2001 | clr_hit_marker(opt->pattern_expression); | |
e1327023 | 2002 | grep_source_1(opt, gs, 1); |
0ab7befa JH |
2003 | |
2004 | if (!chk_hit_marker(opt->pattern_expression)) | |
2005 | return 0; | |
2006 | ||
e1327023 JK |
2007 | return grep_source_1(opt, gs, 0); |
2008 | } | |
2009 | ||
c876d6da | 2010 | int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) |
e1327023 JK |
2011 | { |
2012 | struct grep_source gs; | |
2013 | int r; | |
2014 | ||
55c61688 | 2015 | grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); |
e1327023 JK |
2016 | gs.buf = buf; |
2017 | gs.size = size; | |
2018 | ||
2019 | r = grep_source(opt, &gs); | |
2020 | ||
2021 | grep_source_clear(&gs); | |
2022 | return r; | |
2023 | } | |
2024 | ||
2025 | void grep_source_init(struct grep_source *gs, enum grep_source_type type, | |
55c61688 NTND |
2026 | const char *name, const char *path, |
2027 | const void *identifier) | |
e1327023 JK |
2028 | { |
2029 | gs->type = type; | |
8c53f071 JK |
2030 | gs->name = xstrdup_or_null(name); |
2031 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
2032 | gs->buf = NULL; |
2033 | gs->size = 0; | |
94ad9d9e | 2034 | gs->driver = NULL; |
e1327023 JK |
2035 | |
2036 | switch (type) { | |
2037 | case GREP_SOURCE_FILE: | |
2038 | gs->identifier = xstrdup(identifier); | |
2039 | break; | |
1c41c82b BW |
2040 | case GREP_SOURCE_OID: |
2041 | gs->identifier = oiddup(identifier); | |
e1327023 JK |
2042 | break; |
2043 | case GREP_SOURCE_BUF: | |
2044 | gs->identifier = NULL; | |
4538eef5 | 2045 | break; |
e1327023 JK |
2046 | } |
2047 | } | |
2048 | ||
2049 | void grep_source_clear(struct grep_source *gs) | |
2050 | { | |
88ce3ef6 ÆAB |
2051 | FREE_AND_NULL(gs->name); |
2052 | FREE_AND_NULL(gs->path); | |
2053 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
2054 | grep_source_clear_data(gs); |
2055 | } | |
2056 | ||
2057 | void grep_source_clear_data(struct grep_source *gs) | |
2058 | { | |
2059 | switch (gs->type) { | |
2060 | case GREP_SOURCE_FILE: | |
1c41c82b | 2061 | case GREP_SOURCE_OID: |
6a83d902 | 2062 | FREE_AND_NULL(gs->buf); |
e1327023 JK |
2063 | gs->size = 0; |
2064 | break; | |
2065 | case GREP_SOURCE_BUF: | |
2066 | /* leave user-provided buf intact */ | |
2067 | break; | |
2068 | } | |
2069 | } | |
2070 | ||
1c41c82b | 2071 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
2072 | { |
2073 | enum object_type type; | |
2074 | ||
2075 | grep_read_lock(); | |
b4f5aca4 | 2076 | gs->buf = read_object_file(gs->identifier, &type, &gs->size); |
e1327023 JK |
2077 | grep_read_unlock(); |
2078 | ||
2079 | if (!gs->buf) | |
2080 | return error(_("'%s': unable to read %s"), | |
2081 | gs->name, | |
1c41c82b | 2082 | oid_to_hex(gs->identifier)); |
e1327023 JK |
2083 | return 0; |
2084 | } | |
2085 | ||
2086 | static int grep_source_load_file(struct grep_source *gs) | |
2087 | { | |
2088 | const char *filename = gs->identifier; | |
2089 | struct stat st; | |
2090 | char *data; | |
2091 | size_t size; | |
2092 | int i; | |
2093 | ||
2094 | if (lstat(filename, &st) < 0) { | |
2095 | err_ret: | |
2096 | if (errno != ENOENT) | |
7645d8f1 | 2097 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
2098 | return -1; |
2099 | } | |
2100 | if (!S_ISREG(st.st_mode)) | |
2101 | return -1; | |
2102 | size = xsize_t(st.st_size); | |
2103 | i = open(filename, O_RDONLY); | |
2104 | if (i < 0) | |
2105 | goto err_ret; | |
3733e694 | 2106 | data = xmallocz(size); |
e1327023 | 2107 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 2108 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
2109 | close(i); |
2110 | free(data); | |
2111 | return -1; | |
2112 | } | |
2113 | close(i); | |
e1327023 JK |
2114 | |
2115 | gs->buf = data; | |
2116 | gs->size = size; | |
2117 | return 0; | |
2118 | } | |
2119 | ||
3083301e | 2120 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
2121 | { |
2122 | if (gs->buf) | |
2123 | return 0; | |
2124 | ||
2125 | switch (gs->type) { | |
2126 | case GREP_SOURCE_FILE: | |
2127 | return grep_source_load_file(gs); | |
1c41c82b BW |
2128 | case GREP_SOURCE_OID: |
2129 | return grep_source_load_oid(gs); | |
e1327023 JK |
2130 | case GREP_SOURCE_BUF: |
2131 | return gs->buf ? 0 : -1; | |
2132 | } | |
033abf97 | 2133 | BUG("invalid grep_source type to load"); |
0ab7befa | 2134 | } |
94ad9d9e | 2135 | |
acd00ea0 NTND |
2136 | void grep_source_load_driver(struct grep_source *gs, |
2137 | struct index_state *istate) | |
94ad9d9e JK |
2138 | { |
2139 | if (gs->driver) | |
2140 | return; | |
2141 | ||
2142 | grep_attr_lock(); | |
55c61688 | 2143 | if (gs->path) |
acd00ea0 | 2144 | gs->driver = userdiff_find_by_path(istate, gs->path); |
94ad9d9e JK |
2145 | if (!gs->driver) |
2146 | gs->driver = userdiff_find_by_name("default"); | |
2147 | grep_attr_unlock(); | |
2148 | } | |
41b59bfc | 2149 | |
acd00ea0 NTND |
2150 | static int grep_source_is_binary(struct grep_source *gs, |
2151 | struct index_state *istate) | |
41b59bfc | 2152 | { |
acd00ea0 | 2153 | grep_source_load_driver(gs, istate); |
41b59bfc JK |
2154 | if (gs->driver->binary != -1) |
2155 | return gs->driver->binary; | |
2156 | ||
2157 | if (!grep_source_load(gs)) | |
2158 | return buffer_is_binary(gs->buf, gs->size); | |
2159 | ||
2160 | return 0; | |
2161 | } |