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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); |
fbaceaac | 397 | #endif |
63e7e9d8 MK |
398 | } |
399 | ||
6d4b5747 | 400 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
401 | regmatch_t *match, int eflags) |
402 | { | |
403 | int ovector[30], ret, flags = 0; | |
404 | ||
405 | if (eflags & REG_NOTBOL) | |
406 | flags |= PCRE_NOTBOL; | |
407 | ||
685668fa ÆAB |
408 | ret = pcre_exec(p->pcre1_regexp, p->pcre1_extra_info, line, |
409 | eol - line, 0, flags, ovector, | |
410 | ARRAY_SIZE(ovector)); | |
fbaceaac | 411 | |
63e7e9d8 MK |
412 | if (ret < 0 && ret != PCRE_ERROR_NOMATCH) |
413 | die("pcre_exec failed with error code %d", ret); | |
414 | if (ret > 0) { | |
415 | ret = 0; | |
416 | match->rm_so = ovector[0]; | |
417 | match->rm_eo = ovector[1]; | |
418 | } | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
6d4b5747 | 423 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 | 424 | { |
6d4b5747 | 425 | pcre_free(p->pcre1_regexp); |
e87de7ca | 426 | #ifdef GIT_PCRE1_USE_JIT |
685668fa | 427 | if (p->pcre1_jit_on) |
fbaceaac | 428 | pcre_free_study(p->pcre1_extra_info); |
685668fa | 429 | else |
fbaceaac | 430 | #endif |
fbaceaac | 431 | pcre_free(p->pcre1_extra_info); |
6d4b5747 | 432 | pcre_free((void *)p->pcre1_tables); |
63e7e9d8 | 433 | } |
3485bea1 | 434 | #else /* !USE_LIBPCRE1 */ |
6d4b5747 | 435 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
436 | { |
437 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
438 | } | |
439 | ||
6d4b5747 | 440 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
441 | regmatch_t *match, int eflags) |
442 | { | |
443 | return 1; | |
444 | } | |
445 | ||
6d4b5747 | 446 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 MK |
447 | { |
448 | } | |
3485bea1 | 449 | #endif /* !USE_LIBPCRE1 */ |
63e7e9d8 | 450 | |
94da9193 ÆAB |
451 | #ifdef USE_LIBPCRE2 |
452 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
453 | { | |
454 | int error; | |
455 | PCRE2_UCHAR errbuf[256]; | |
456 | PCRE2_SIZE erroffset; | |
457 | int options = PCRE2_MULTILINE; | |
458 | const uint8_t *character_tables = NULL; | |
459 | int jitret; | |
a25b9085 ÆAB |
460 | int patinforet; |
461 | size_t jitsizearg; | |
94da9193 ÆAB |
462 | |
463 | assert(opt->pcre2); | |
464 | ||
465 | p->pcre2_compile_context = NULL; | |
466 | ||
467 | if (opt->ignore_case) { | |
44570188 | 468 | if (!opt->ignore_locale && has_non_ascii(p->pattern)) { |
94da9193 ÆAB |
469 | character_tables = pcre2_maketables(NULL); |
470 | p->pcre2_compile_context = pcre2_compile_context_create(NULL); | |
471 | pcre2_set_character_tables(p->pcre2_compile_context, character_tables); | |
472 | } | |
473 | options |= PCRE2_CASELESS; | |
474 | } | |
44570188 | 475 | if (!opt->ignore_locale && is_utf8_locale() && has_non_ascii(p->pattern)) |
94da9193 ÆAB |
476 | options |= PCRE2_UTF; |
477 | ||
478 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
479 | p->patternlen, options, &error, &erroffset, | |
480 | p->pcre2_compile_context); | |
481 | ||
482 | if (p->pcre2_pattern) { | |
483 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL); | |
484 | if (!p->pcre2_match_data) | |
485 | die("Couldn't allocate PCRE2 match data"); | |
486 | } else { | |
487 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
488 | compile_regexp_failed(p, (const char *)&errbuf); | |
489 | } | |
490 | ||
491 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
04bef50c | 492 | if (p->pcre2_jit_on) { |
94da9193 ÆAB |
493 | jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE); |
494 | if (jitret) | |
495 | die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret); | |
a25b9085 ÆAB |
496 | |
497 | /* | |
498 | * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just | |
499 | * tells us whether the library itself supports JIT, | |
500 | * but to see whether we're going to be actually using | |
501 | * JIT we need to extract PCRE2_INFO_JITSIZE from the | |
502 | * pattern *after* we do pcre2_jit_compile() above. | |
503 | * | |
504 | * This is because if the pattern contains the | |
505 | * (*NO_JIT) verb (see pcre2syntax(3)) | |
506 | * pcre2_jit_compile() will exit early with 0. If we | |
507 | * then proceed to call pcre2_jit_match() further down | |
508 | * the line instead of pcre2_match() we'll either | |
509 | * segfault (pre PCRE 10.31) or run into a fatal error | |
510 | * (post PCRE2 10.31) | |
511 | */ | |
512 | patinforet = pcre2_pattern_info(p->pcre2_pattern, PCRE2_INFO_JITSIZE, &jitsizearg); | |
513 | if (patinforet) | |
514 | BUG("pcre2_pattern_info() failed: %d", patinforet); | |
515 | if (jitsizearg == 0) { | |
516 | p->pcre2_jit_on = 0; | |
517 | return; | |
518 | } | |
94da9193 ÆAB |
519 | } |
520 | } | |
521 | ||
522 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
523 | regmatch_t *match, int eflags) | |
524 | { | |
525 | int ret, flags = 0; | |
526 | PCRE2_SIZE *ovector; | |
527 | PCRE2_UCHAR errbuf[256]; | |
528 | ||
529 | if (eflags & REG_NOTBOL) | |
530 | flags |= PCRE2_NOTBOL; | |
531 | ||
532 | if (p->pcre2_jit_on) | |
533 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
534 | eol - line, 0, flags, p->pcre2_match_data, | |
535 | NULL); | |
536 | else | |
537 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
538 | eol - line, 0, flags, p->pcre2_match_data, | |
539 | NULL); | |
540 | ||
541 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
542 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
543 | die("%s failed with error code %d: %s", | |
544 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
545 | errbuf); | |
546 | } | |
547 | if (ret > 0) { | |
548 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
549 | ret = 0; | |
550 | match->rm_so = (int)ovector[0]; | |
551 | match->rm_eo = (int)ovector[1]; | |
552 | } | |
553 | ||
554 | return ret; | |
555 | } | |
556 | ||
557 | static void free_pcre2_pattern(struct grep_pat *p) | |
558 | { | |
559 | pcre2_compile_context_free(p->pcre2_compile_context); | |
560 | pcre2_code_free(p->pcre2_pattern); | |
561 | pcre2_match_data_free(p->pcre2_match_data); | |
94da9193 ÆAB |
562 | } |
563 | #else /* !USE_LIBPCRE2 */ | |
564 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
565 | { | |
566 | /* | |
567 | * Unreachable until USE_LIBPCRE2 becomes synonymous with | |
568 | * USE_LIBPCRE. See the sibling comment in | |
569 | * grep_set_pattern_type_option(). | |
570 | */ | |
571 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
572 | } | |
573 | ||
574 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
575 | regmatch_t *match, int eflags) | |
576 | { | |
577 | return 1; | |
578 | } | |
579 | ||
580 | static void free_pcre2_pattern(struct grep_pat *p) | |
581 | { | |
582 | } | |
94da9193 | 583 | |
793dc676 NTND |
584 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
585 | { | |
586 | struct strbuf sb = STRBUF_INIT; | |
587 | int err; | |
1ceababc | 588 | int regflags = 0; |
793dc676 NTND |
589 | |
590 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
591 | if (opt->ignore_case) |
592 | regflags |= REG_ICASE; | |
593 | err = regcomp(&p->regexp, sb.buf, regflags); | |
594 | if (opt->debug) | |
595 | fprintf(stderr, "fixed %s\n", sb.buf); | |
596 | strbuf_release(&sb); | |
597 | if (err) { | |
598 | char errbuf[1024]; | |
599 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
793dc676 NTND |
600 | compile_regexp_failed(p, errbuf); |
601 | } | |
602 | } | |
b65abcaf | 603 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 604 | |
83b5d2f5 JH |
605 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
606 | { | |
c822255c | 607 | int err; |
07a3d411 | 608 | int regflags = REG_NEWLINE; |
c822255c | 609 | |
d7eb527d | 610 | p->word_regexp = opt->word_regexp; |
5183bf67 | 611 | p->ignore_case = opt->ignore_case; |
48de2a76 | 612 | p->fixed = opt->fixed; |
d7eb527d | 613 | |
45d1f37c ÆAB |
614 | if (memchr(p->pattern, 0, p->patternlen) && !opt->pcre2) |
615 | die(_("given pattern contains NULL byte (via -f <file>). This is only supported with -P under PCRE v2")); | |
616 | ||
09872f64 ÆAB |
617 | p->is_fixed = is_fixed(p->pattern, p->patternlen); |
618 | if (p->fixed || p->is_fixed) { | |
b65abcaf ÆAB |
619 | #ifdef USE_LIBPCRE2 |
620 | opt->pcre2 = 1; | |
09872f64 | 621 | if (p->is_fixed) { |
b65abcaf ÆAB |
622 | compile_pcre2_pattern(p, opt); |
623 | } else { | |
624 | /* | |
625 | * E.g. t7811-grep-open.sh relies on the | |
626 | * pattern being restored. | |
627 | */ | |
628 | char *old_pattern = p->pattern; | |
629 | size_t old_patternlen = p->patternlen; | |
630 | struct strbuf sb = STRBUF_INIT; | |
631 | ||
632 | /* | |
633 | * There is the PCRE2_LITERAL flag, but it's | |
634 | * only in PCRE v2 10.30 and later. Needing to | |
635 | * ifdef our way around that and dealing with | |
636 | * it + PCRE2_MULTILINE being an error is more | |
637 | * complex than just quoting this ourselves. | |
638 | */ | |
639 | strbuf_add(&sb, "\\Q", 2); | |
640 | strbuf_add(&sb, p->pattern, p->patternlen); | |
641 | strbuf_add(&sb, "\\E", 2); | |
642 | ||
643 | p->pattern = sb.buf; | |
644 | p->patternlen = sb.len; | |
645 | compile_pcre2_pattern(p, opt); | |
646 | p->pattern = old_pattern; | |
647 | p->patternlen = old_patternlen; | |
648 | strbuf_release(&sb); | |
649 | } | |
650 | #else /* !USE_LIBPCRE2 */ | |
793dc676 | 651 | compile_fixed_regexp(p, opt); |
b65abcaf | 652 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 653 | return; |
9eceddee | 654 | } |
c822255c | 655 | |
94da9193 ÆAB |
656 | if (opt->pcre2) { |
657 | compile_pcre2_pattern(p, opt); | |
658 | return; | |
659 | } | |
660 | ||
6d4b5747 ÆAB |
661 | if (opt->pcre1) { |
662 | compile_pcre1_regexp(p, opt); | |
63e7e9d8 MK |
663 | return; |
664 | } | |
665 | ||
07a3d411 ÆAB |
666 | if (p->ignore_case) |
667 | regflags |= REG_ICASE; | |
668 | if (opt->extended_regexp_option) | |
669 | regflags |= REG_EXTENDED; | |
670 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
671 | if (err) { |
672 | char errbuf[1024]; | |
83b5d2f5 | 673 | regerror(err, &p->regexp, errbuf, 1024); |
a30c148a | 674 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
675 | } |
676 | } | |
677 | ||
0ab7befa | 678 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
679 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
680 | { | |
681 | struct grep_pat *p; | |
682 | struct grep_expr *x; | |
683 | ||
684 | p = *list; | |
c922b01f LT |
685 | if (!p) |
686 | return NULL; | |
83b5d2f5 JH |
687 | switch (p->token) { |
688 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
689 | case GREP_PATTERN_HEAD: |
690 | case GREP_PATTERN_BODY: | |
83b5d2f5 JH |
691 | x = xcalloc(1, sizeof (struct grep_expr)); |
692 | x->node = GREP_NODE_ATOM; | |
693 | x->u.atom = p; | |
694 | *list = p->next; | |
695 | return x; | |
696 | case GREP_OPEN_PAREN: | |
697 | *list = p->next; | |
0ab7befa | 698 | x = compile_pattern_or(list); |
83b5d2f5 JH |
699 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
700 | die("unmatched parenthesis"); | |
701 | *list = (*list)->next; | |
702 | return x; | |
703 | default: | |
704 | return NULL; | |
705 | } | |
706 | } | |
707 | ||
708 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
709 | { | |
710 | struct grep_pat *p; | |
711 | struct grep_expr *x; | |
712 | ||
713 | p = *list; | |
c922b01f LT |
714 | if (!p) |
715 | return NULL; | |
83b5d2f5 JH |
716 | switch (p->token) { |
717 | case GREP_NOT: | |
718 | if (!p->next) | |
719 | die("--not not followed by pattern expression"); | |
720 | *list = p->next; | |
721 | x = xcalloc(1, sizeof (struct grep_expr)); | |
722 | x->node = GREP_NODE_NOT; | |
723 | x->u.unary = compile_pattern_not(list); | |
724 | if (!x->u.unary) | |
725 | die("--not followed by non pattern expression"); | |
726 | return x; | |
727 | default: | |
728 | return compile_pattern_atom(list); | |
729 | } | |
730 | } | |
731 | ||
732 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
733 | { | |
734 | struct grep_pat *p; | |
735 | struct grep_expr *x, *y, *z; | |
736 | ||
737 | x = compile_pattern_not(list); | |
738 | p = *list; | |
739 | if (p && p->token == GREP_AND) { | |
740 | if (!p->next) | |
741 | die("--and not followed by pattern expression"); | |
742 | *list = p->next; | |
743 | y = compile_pattern_and(list); | |
744 | if (!y) | |
745 | die("--and not followed by pattern expression"); | |
746 | z = xcalloc(1, sizeof (struct grep_expr)); | |
747 | z->node = GREP_NODE_AND; | |
748 | z->u.binary.left = x; | |
749 | z->u.binary.right = y; | |
750 | return z; | |
751 | } | |
752 | return x; | |
753 | } | |
754 | ||
755 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
756 | { | |
757 | struct grep_pat *p; | |
758 | struct grep_expr *x, *y, *z; | |
759 | ||
760 | x = compile_pattern_and(list); | |
761 | p = *list; | |
762 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
763 | y = compile_pattern_or(list); | |
764 | if (!y) | |
765 | die("not a pattern expression %s", p->pattern); | |
766 | z = xcalloc(1, sizeof (struct grep_expr)); | |
767 | z->node = GREP_NODE_OR; | |
768 | z->u.binary.left = x; | |
769 | z->u.binary.right = y; | |
770 | return z; | |
771 | } | |
772 | return x; | |
773 | } | |
774 | ||
775 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
776 | { | |
777 | return compile_pattern_or(list); | |
778 | } | |
779 | ||
17bf35a3 JH |
780 | static void indent(int in) |
781 | { | |
782 | while (in-- > 0) | |
783 | fputc(' ', stderr); | |
784 | } | |
785 | ||
786 | static void dump_grep_pat(struct grep_pat *p) | |
787 | { | |
788 | switch (p->token) { | |
789 | case GREP_AND: fprintf(stderr, "*and*"); break; | |
790 | case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; | |
791 | case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; | |
792 | case GREP_NOT: fprintf(stderr, "*not*"); break; | |
793 | case GREP_OR: fprintf(stderr, "*or*"); break; | |
794 | ||
795 | case GREP_PATTERN: fprintf(stderr, "pattern"); break; | |
796 | case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; | |
797 | case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; | |
798 | } | |
799 | ||
800 | switch (p->token) { | |
801 | default: break; | |
802 | case GREP_PATTERN_HEAD: | |
803 | fprintf(stderr, "<head %d>", p->field); break; | |
804 | case GREP_PATTERN_BODY: | |
805 | fprintf(stderr, "<body>"); break; | |
806 | } | |
807 | switch (p->token) { | |
808 | default: break; | |
809 | case GREP_PATTERN_HEAD: | |
810 | case GREP_PATTERN_BODY: | |
811 | case GREP_PATTERN: | |
812 | fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); | |
813 | break; | |
814 | } | |
815 | fputc('\n', stderr); | |
816 | } | |
817 | ||
818 | static void dump_grep_expression_1(struct grep_expr *x, int in) | |
819 | { | |
820 | indent(in); | |
821 | switch (x->node) { | |
822 | case GREP_NODE_TRUE: | |
823 | fprintf(stderr, "true\n"); | |
824 | break; | |
825 | case GREP_NODE_ATOM: | |
826 | dump_grep_pat(x->u.atom); | |
827 | break; | |
828 | case GREP_NODE_NOT: | |
829 | fprintf(stderr, "(not\n"); | |
830 | dump_grep_expression_1(x->u.unary, in+1); | |
831 | indent(in); | |
832 | fprintf(stderr, ")\n"); | |
833 | break; | |
834 | case GREP_NODE_AND: | |
835 | fprintf(stderr, "(and\n"); | |
836 | dump_grep_expression_1(x->u.binary.left, in+1); | |
837 | dump_grep_expression_1(x->u.binary.right, in+1); | |
838 | indent(in); | |
839 | fprintf(stderr, ")\n"); | |
840 | break; | |
841 | case GREP_NODE_OR: | |
842 | fprintf(stderr, "(or\n"); | |
843 | dump_grep_expression_1(x->u.binary.left, in+1); | |
844 | dump_grep_expression_1(x->u.binary.right, in+1); | |
845 | indent(in); | |
846 | fprintf(stderr, ")\n"); | |
847 | break; | |
848 | } | |
849 | } | |
850 | ||
07a7d656 | 851 | static void dump_grep_expression(struct grep_opt *opt) |
17bf35a3 JH |
852 | { |
853 | struct grep_expr *x = opt->pattern_expression; | |
854 | ||
855 | if (opt->all_match) | |
856 | fprintf(stderr, "[all-match]\n"); | |
857 | dump_grep_expression_1(x, 0); | |
858 | fflush(NULL); | |
859 | } | |
860 | ||
5aaeb733 JH |
861 | static struct grep_expr *grep_true_expr(void) |
862 | { | |
863 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
864 | z->node = GREP_NODE_TRUE; | |
865 | return z; | |
866 | } | |
867 | ||
868 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) | |
869 | { | |
870 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
871 | z->node = GREP_NODE_OR; | |
872 | z->u.binary.left = left; | |
873 | z->u.binary.right = right; | |
874 | return z; | |
875 | } | |
876 | ||
95ce9ce2 | 877 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
878 | { |
879 | struct grep_pat *p; | |
95ce9ce2 | 880 | struct grep_expr *header_expr; |
5aaeb733 JH |
881 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
882 | enum grep_header_field fld; | |
83b5d2f5 | 883 | |
95ce9ce2 JH |
884 | if (!opt->header_list) |
885 | return NULL; | |
2385f246 | 886 | |
95ce9ce2 JH |
887 | for (p = opt->header_list; p; p = p->next) { |
888 | if (p->token != GREP_PATTERN_HEAD) | |
033abf97 | 889 | BUG("a non-header pattern in grep header list."); |
3ce3ffb8 AP |
890 | if (p->field < GREP_HEADER_FIELD_MIN || |
891 | GREP_HEADER_FIELD_MAX <= p->field) | |
033abf97 | 892 | BUG("unknown header field %d", p->field); |
95ce9ce2 | 893 | compile_regexp(p, opt); |
80235ba7 | 894 | } |
5aaeb733 JH |
895 | |
896 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
897 | header_group[fld] = NULL; | |
898 | ||
899 | for (p = opt->header_list; p; p = p->next) { | |
900 | struct grep_expr *h; | |
901 | struct grep_pat *pp = p; | |
902 | ||
903 | h = compile_pattern_atom(&pp); | |
904 | if (!h || pp != p->next) | |
033abf97 | 905 | BUG("malformed header expr"); |
5aaeb733 JH |
906 | if (!header_group[p->field]) { |
907 | header_group[p->field] = h; | |
908 | continue; | |
909 | } | |
910 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
911 | } | |
912 | ||
913 | header_expr = NULL; | |
914 | ||
915 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
916 | if (!header_group[fld]) | |
917 | continue; | |
918 | if (!header_expr) | |
919 | header_expr = grep_true_expr(); | |
920 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
921 | } | |
95ce9ce2 JH |
922 | return header_expr; |
923 | } | |
924 | ||
13e4fc7e JH |
925 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
926 | { | |
927 | struct grep_expr *z = x; | |
928 | ||
929 | while (x) { | |
930 | assert(x->node == GREP_NODE_OR); | |
931 | if (x->u.binary.right && | |
932 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
933 | x->u.binary.right = y; | |
934 | break; | |
935 | } | |
936 | x = x->u.binary.right; | |
937 | } | |
938 | return z; | |
939 | } | |
940 | ||
17bf35a3 | 941 | static void compile_grep_patterns_real(struct grep_opt *opt) |
95ce9ce2 JH |
942 | { |
943 | struct grep_pat *p; | |
944 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 945 | |
83b5d2f5 | 946 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
947 | switch (p->token) { |
948 | case GREP_PATTERN: /* atom */ | |
949 | case GREP_PATTERN_HEAD: | |
950 | case GREP_PATTERN_BODY: | |
c822255c | 951 | compile_regexp(p, opt); |
480c1ca6 JH |
952 | break; |
953 | default: | |
83b5d2f5 | 954 | opt->extended = 1; |
480c1ca6 JH |
955 | break; |
956 | } | |
83b5d2f5 JH |
957 | } |
958 | ||
80235ba7 JH |
959 | if (opt->all_match || header_expr) |
960 | opt->extended = 1; | |
17bf35a3 | 961 | else if (!opt->extended && !opt->debug) |
83b5d2f5 JH |
962 | return; |
963 | ||
83b5d2f5 | 964 | p = opt->pattern_list; |
ba150a3f MB |
965 | if (p) |
966 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
967 | if (p) |
968 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 JH |
969 | |
970 | if (!header_expr) | |
971 | return; | |
972 | ||
5aaeb733 | 973 | if (!opt->pattern_expression) |
80235ba7 | 974 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
975 | else if (opt->all_match) |
976 | opt->pattern_expression = grep_splice_or(header_expr, | |
977 | opt->pattern_expression); | |
5aaeb733 JH |
978 | else |
979 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
980 | header_expr); | |
80235ba7 | 981 | opt->all_match = 1; |
83b5d2f5 JH |
982 | } |
983 | ||
17bf35a3 JH |
984 | void compile_grep_patterns(struct grep_opt *opt) |
985 | { | |
986 | compile_grep_patterns_real(opt); | |
987 | if (opt->debug) | |
988 | dump_grep_expression(opt); | |
989 | } | |
990 | ||
b48fb5b6 JH |
991 | static void free_pattern_expr(struct grep_expr *x) |
992 | { | |
993 | switch (x->node) { | |
5aaeb733 | 994 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
995 | case GREP_NODE_ATOM: |
996 | break; | |
997 | case GREP_NODE_NOT: | |
998 | free_pattern_expr(x->u.unary); | |
999 | break; | |
1000 | case GREP_NODE_AND: | |
1001 | case GREP_NODE_OR: | |
1002 | free_pattern_expr(x->u.binary.left); | |
1003 | free_pattern_expr(x->u.binary.right); | |
1004 | break; | |
1005 | } | |
1006 | free(x); | |
1007 | } | |
1008 | ||
1009 | void free_grep_patterns(struct grep_opt *opt) | |
1010 | { | |
1011 | struct grep_pat *p, *n; | |
1012 | ||
1013 | for (p = opt->pattern_list; p; p = n) { | |
1014 | n = p->next; | |
1015 | switch (p->token) { | |
1016 | case GREP_PATTERN: /* atom */ | |
1017 | case GREP_PATTERN_HEAD: | |
1018 | case GREP_PATTERN_BODY: | |
48de2a76 | 1019 | if (p->pcre1_regexp) |
6d4b5747 | 1020 | free_pcre1_regexp(p); |
94da9193 ÆAB |
1021 | else if (p->pcre2_pattern) |
1022 | free_pcre2_pattern(p); | |
63e7e9d8 MK |
1023 | else |
1024 | regfree(&p->regexp); | |
526a858a | 1025 | free(p->pattern); |
b48fb5b6 JH |
1026 | break; |
1027 | default: | |
1028 | break; | |
1029 | } | |
1030 | free(p); | |
1031 | } | |
1032 | ||
1033 | if (!opt->extended) | |
1034 | return; | |
1035 | free_pattern_expr(opt->pattern_expression); | |
1036 | } | |
1037 | ||
83b5d2f5 JH |
1038 | static char *end_of_line(char *cp, unsigned long *left) |
1039 | { | |
1040 | unsigned long l = *left; | |
1041 | while (l && *cp != '\n') { | |
1042 | l--; | |
1043 | cp++; | |
1044 | } | |
1045 | *left = l; | |
1046 | return cp; | |
1047 | } | |
1048 | ||
1049 | static int word_char(char ch) | |
1050 | { | |
1051 | return isalnum(ch) || ch == '_'; | |
1052 | } | |
1053 | ||
55f638bd ML |
1054 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
1055 | const char *color) | |
1056 | { | |
daa0c3d9 | 1057 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
1058 | opt->output(opt, color, strlen(color)); |
1059 | opt->output(opt, data, size); | |
1060 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
1061 | } else | |
1062 | opt->output(opt, data, size); | |
1063 | } | |
1064 | ||
1065 | static void output_sep(struct grep_opt *opt, char sign) | |
1066 | { | |
1067 | if (opt->null_following_name) | |
1068 | opt->output(opt, "\0", 1); | |
1069 | else | |
fa151dc5 | 1070 | output_color(opt, &sign, 1, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
1071 | } |
1072 | ||
83caecca RZ |
1073 | static void show_name(struct grep_opt *opt, const char *name) |
1074 | { | |
fa151dc5 | 1075 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1076 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
1077 | } |
1078 | ||
97e77784 MK |
1079 | static int patmatch(struct grep_pat *p, char *line, char *eol, |
1080 | regmatch_t *match, int eflags) | |
1081 | { | |
1082 | int hit; | |
1083 | ||
48de2a76 | 1084 | if (p->pcre1_regexp) |
6d4b5747 | 1085 | hit = !pcre1match(p, line, eol, match, eflags); |
94da9193 ÆAB |
1086 | else if (p->pcre2_pattern) |
1087 | hit = !pcre2match(p, line, eol, match, eflags); | |
97e77784 | 1088 | else |
b7d36ffc JS |
1089 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
1090 | eflags); | |
97e77784 MK |
1091 | |
1092 | return hit; | |
1093 | } | |
1094 | ||
a4d7d2c6 JH |
1095 | static int strip_timestamp(char *bol, char **eol_p) |
1096 | { | |
1097 | char *eol = *eol_p; | |
1098 | int ch; | |
1099 | ||
1100 | while (bol < --eol) { | |
1101 | if (*eol != '>') | |
1102 | continue; | |
1103 | *eol_p = ++eol; | |
1104 | ch = *eol; | |
1105 | *eol = '\0'; | |
1106 | return ch; | |
1107 | } | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | static struct { | |
1112 | const char *field; | |
1113 | size_t len; | |
1114 | } header_field[] = { | |
1115 | { "author ", 7 }, | |
1116 | { "committer ", 10 }, | |
72fd13f7 | 1117 | { "reflog ", 7 }, |
a4d7d2c6 JH |
1118 | }; |
1119 | ||
d7eb527d | 1120 | static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, |
79212772 RS |
1121 | enum grep_context ctx, |
1122 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
1123 | { |
1124 | int hit = 0; | |
a4d7d2c6 | 1125 | int saved_ch = 0; |
e701fadb | 1126 | const char *start = bol; |
83b5d2f5 | 1127 | |
480c1ca6 JH |
1128 | if ((p->token != GREP_PATTERN) && |
1129 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
1130 | return 0; | |
1131 | ||
a4d7d2c6 JH |
1132 | if (p->token == GREP_PATTERN_HEAD) { |
1133 | const char *field; | |
1134 | size_t len; | |
1135 | assert(p->field < ARRAY_SIZE(header_field)); | |
1136 | field = header_field[p->field].field; | |
1137 | len = header_field[p->field].len; | |
1138 | if (strncmp(bol, field, len)) | |
1139 | return 0; | |
1140 | bol += len; | |
ad4813b3 NTND |
1141 | switch (p->field) { |
1142 | case GREP_HEADER_AUTHOR: | |
1143 | case GREP_HEADER_COMMITTER: | |
1144 | saved_ch = strip_timestamp(bol, &eol); | |
1145 | break; | |
1146 | default: | |
1147 | break; | |
1148 | } | |
a4d7d2c6 JH |
1149 | } |
1150 | ||
83b5d2f5 | 1151 | again: |
97e77784 | 1152 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 1153 | |
d7eb527d | 1154 | if (hit && p->word_regexp) { |
83b5d2f5 | 1155 | if ((pmatch[0].rm_so < 0) || |
84201eae | 1156 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
1157 | (pmatch[0].rm_eo < 0) || |
1158 | (eol - bol) < pmatch[0].rm_eo) | |
1159 | die("regexp returned nonsense"); | |
1160 | ||
1161 | /* Match beginning must be either beginning of the | |
1162 | * line, or at word boundary (i.e. the last char must | |
1163 | * not be a word char). Similarly, match end must be | |
1164 | * either end of the line, or at word boundary | |
1165 | * (i.e. the next char must not be a word char). | |
1166 | */ | |
fb62eb7f | 1167 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
1168 | !word_char(bol[pmatch[0].rm_so-1])) && |
1169 | ((pmatch[0].rm_eo == (eol-bol)) || | |
1170 | !word_char(bol[pmatch[0].rm_eo])) ) | |
1171 | ; | |
1172 | else | |
1173 | hit = 0; | |
1174 | ||
84201eae RS |
1175 | /* Words consist of at least one character. */ |
1176 | if (pmatch->rm_so == pmatch->rm_eo) | |
1177 | hit = 0; | |
1178 | ||
83b5d2f5 JH |
1179 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
1180 | /* There could be more than one match on the | |
1181 | * line, and the first match might not be | |
1182 | * strict word match. But later ones could be! | |
fb62eb7f RS |
1183 | * Forward to the next possible start, i.e. the |
1184 | * next position following a non-word char. | |
83b5d2f5 JH |
1185 | */ |
1186 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
1187 | while (word_char(bol[-1]) && bol < eol) |
1188 | bol++; | |
dbb6a4ad | 1189 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
1190 | if (bol < eol) |
1191 | goto again; | |
83b5d2f5 JH |
1192 | } |
1193 | } | |
a4d7d2c6 JH |
1194 | if (p->token == GREP_PATTERN_HEAD && saved_ch) |
1195 | *eol = saved_ch; | |
e701fadb RS |
1196 | if (hit) { |
1197 | pmatch[0].rm_so += bol - start; | |
1198 | pmatch[0].rm_eo += bol - start; | |
1199 | } | |
83b5d2f5 JH |
1200 | return hit; |
1201 | } | |
1202 | ||
68d686e6 TB |
1203 | static int match_expr_eval(struct grep_opt *opt, struct grep_expr *x, char *bol, |
1204 | char *eol, enum grep_context ctx, ssize_t *col, | |
1205 | ssize_t *icol, int collect_hits) | |
83b5d2f5 | 1206 | { |
0ab7befa JH |
1207 | int h = 0; |
1208 | ||
c922b01f LT |
1209 | if (!x) |
1210 | die("Not a valid grep expression"); | |
83b5d2f5 | 1211 | switch (x->node) { |
5aaeb733 JH |
1212 | case GREP_NODE_TRUE: |
1213 | h = 1; | |
1214 | break; | |
83b5d2f5 | 1215 | case GREP_NODE_ATOM: |
68d686e6 TB |
1216 | { |
1217 | regmatch_t tmp; | |
1218 | h = match_one_pattern(x->u.atom, bol, eol, ctx, | |
1219 | &tmp, 0); | |
1220 | if (h && (*col < 0 || tmp.rm_so < *col)) | |
1221 | *col = tmp.rm_so; | |
1222 | } | |
83b5d2f5 JH |
1223 | break; |
1224 | case GREP_NODE_NOT: | |
68d686e6 TB |
1225 | /* |
1226 | * Upon visiting a GREP_NODE_NOT, col and icol become swapped. | |
1227 | */ | |
1228 | h = !match_expr_eval(opt, x->u.unary, bol, eol, ctx, icol, col, | |
1229 | 0); | |
0ab7befa | 1230 | break; |
83b5d2f5 | 1231 | case GREP_NODE_AND: |
017c0fcf | 1232 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
68d686e6 | 1233 | icol, 0); |
017c0fcf TB |
1234 | if (h || opt->columnnum) { |
1235 | /* | |
1236 | * Don't short-circuit AND when given --column, since a | |
1237 | * NOT earlier in the tree may turn this into an OR. In | |
1238 | * this case, see the below comment. | |
1239 | */ | |
1240 | h &= match_expr_eval(opt, x->u.binary.right, bol, eol, | |
1241 | ctx, col, icol, 0); | |
1242 | } | |
0ab7befa | 1243 | break; |
83b5d2f5 | 1244 | case GREP_NODE_OR: |
017c0fcf TB |
1245 | if (!(collect_hits || opt->columnnum)) { |
1246 | /* | |
1247 | * Don't short-circuit OR when given --column (or | |
1248 | * collecting hits) to ensure we don't skip a later | |
1249 | * child that would produce an earlier match. | |
1250 | */ | |
68d686e6 TB |
1251 | return (match_expr_eval(opt, x->u.binary.left, bol, eol, |
1252 | ctx, col, icol, 0) || | |
1253 | match_expr_eval(opt, x->u.binary.right, bol, | |
1254 | eol, ctx, col, icol, 0)); | |
017c0fcf | 1255 | } |
68d686e6 TB |
1256 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
1257 | icol, 0); | |
017c0fcf TB |
1258 | if (collect_hits) |
1259 | x->u.binary.left->hit |= h; | |
68d686e6 | 1260 | h |= match_expr_eval(opt, x->u.binary.right, bol, eol, ctx, col, |
017c0fcf | 1261 | icol, collect_hits); |
0ab7befa JH |
1262 | break; |
1263 | default: | |
d7530708 | 1264 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1265 | } |
0ab7befa JH |
1266 | if (collect_hits) |
1267 | x->hit |= h; | |
1268 | return h; | |
83b5d2f5 JH |
1269 | } |
1270 | ||
480c1ca6 | 1271 | static int match_expr(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 TB |
1272 | enum grep_context ctx, ssize_t *col, |
1273 | ssize_t *icol, int collect_hits) | |
83b5d2f5 JH |
1274 | { |
1275 | struct grep_expr *x = opt->pattern_expression; | |
68d686e6 | 1276 | return match_expr_eval(opt, x, bol, eol, ctx, col, icol, collect_hits); |
83b5d2f5 JH |
1277 | } |
1278 | ||
480c1ca6 | 1279 | static int match_line(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 | 1280 | ssize_t *col, ssize_t *icol, |
0ab7befa | 1281 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1282 | { |
1283 | struct grep_pat *p; | |
017c0fcf | 1284 | int hit = 0; |
79212772 | 1285 | |
83b5d2f5 | 1286 | if (opt->extended) |
68d686e6 TB |
1287 | return match_expr(opt, bol, eol, ctx, col, icol, |
1288 | collect_hits); | |
0ab7befa JH |
1289 | |
1290 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1291 | for (p = opt->pattern_list; p; p = p->next) { |
68d686e6 TB |
1292 | regmatch_t tmp; |
1293 | if (match_one_pattern(p, bol, eol, ctx, &tmp, 0)) { | |
017c0fcf TB |
1294 | hit |= 1; |
1295 | if (!opt->columnnum) { | |
1296 | /* | |
1297 | * Without --column, any single match on a line | |
1298 | * is enough to know that it needs to be | |
1299 | * printed. With --column, scan _all_ patterns | |
1300 | * to find the earliest. | |
1301 | */ | |
1302 | break; | |
1303 | } | |
1304 | if (*col < 0 || tmp.rm_so < *col) | |
1305 | *col = tmp.rm_so; | |
68d686e6 | 1306 | } |
83b5d2f5 | 1307 | } |
017c0fcf | 1308 | return hit; |
83b5d2f5 JH |
1309 | } |
1310 | ||
7e8f59d5 RS |
1311 | static int match_next_pattern(struct grep_pat *p, char *bol, char *eol, |
1312 | enum grep_context ctx, | |
1313 | regmatch_t *pmatch, int eflags) | |
1314 | { | |
1315 | regmatch_t match; | |
1316 | ||
1317 | if (!match_one_pattern(p, bol, eol, ctx, &match, eflags)) | |
1318 | return 0; | |
1319 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1320 | return 0; | |
1321 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1322 | if (match.rm_so > pmatch->rm_so) | |
1323 | return 1; | |
1324 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1325 | return 1; | |
1326 | } | |
1327 | pmatch->rm_so = match.rm_so; | |
1328 | pmatch->rm_eo = match.rm_eo; | |
1329 | return 1; | |
1330 | } | |
1331 | ||
1332 | static int next_match(struct grep_opt *opt, char *bol, char *eol, | |
1333 | enum grep_context ctx, regmatch_t *pmatch, int eflags) | |
1334 | { | |
1335 | struct grep_pat *p; | |
1336 | int hit = 0; | |
1337 | ||
1338 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1339 | if (bol < eol) { | |
1340 | for (p = opt->pattern_list; p; p = p->next) { | |
1341 | switch (p->token) { | |
1342 | case GREP_PATTERN: /* atom */ | |
1343 | case GREP_PATTERN_HEAD: | |
1344 | case GREP_PATTERN_BODY: | |
1345 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1346 | pmatch, eflags); | |
1347 | break; | |
1348 | default: | |
1349 | break; | |
1350 | } | |
1351 | } | |
1352 | } | |
1353 | return hit; | |
1354 | } | |
1355 | ||
c707ded3 TB |
1356 | static void show_line_header(struct grep_opt *opt, const char *name, |
1357 | unsigned lno, ssize_t cno, char sign) | |
7e8f59d5 | 1358 | { |
1d84f72e | 1359 | if (opt->heading && opt->last_shown == 0) { |
fa151dc5 | 1360 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
1d84f72e RS |
1361 | opt->output(opt, "\n", 1); |
1362 | } | |
5dd06d38 RS |
1363 | opt->last_shown = lno; |
1364 | ||
1d84f72e | 1365 | if (!opt->heading && opt->pathname) { |
fa151dc5 | 1366 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
55f638bd | 1367 | output_sep(opt, sign); |
5b594f45 FK |
1368 | } |
1369 | if (opt->linenum) { | |
1370 | char buf[32]; | |
1a168e5c | 1371 | xsnprintf(buf, sizeof(buf), "%d", lno); |
fa151dc5 | 1372 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]); |
55f638bd | 1373 | output_sep(opt, sign); |
5b594f45 | 1374 | } |
89252cd0 TB |
1375 | /* |
1376 | * Treat 'cno' as the 1-indexed offset from the start of a non-context | |
1377 | * line to its first match. Otherwise, 'cno' is 0 indicating that we are | |
1378 | * being called with a context line. | |
1379 | */ | |
1380 | if (opt->columnnum && cno) { | |
1381 | char buf[32]; | |
1382 | xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno); | |
d036d667 | 1383 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]); |
89252cd0 TB |
1384 | output_sep(opt, sign); |
1385 | } | |
c707ded3 TB |
1386 | } |
1387 | ||
1388 | static void show_line(struct grep_opt *opt, char *bol, char *eol, | |
1389 | const char *name, unsigned lno, ssize_t cno, char sign) | |
1390 | { | |
1391 | int rest = eol - bol; | |
9d8db06e TB |
1392 | const char *match_color = NULL; |
1393 | const char *line_color = NULL; | |
c707ded3 TB |
1394 | |
1395 | if (opt->file_break && opt->last_shown == 0) { | |
1396 | if (opt->show_hunk_mark) | |
1397 | opt->output(opt, "\n", 1); | |
1398 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { | |
1399 | if (opt->last_shown == 0) { | |
1400 | if (opt->show_hunk_mark) { | |
87ece7ce | 1401 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1402 | opt->output(opt, "\n", 1); |
1403 | } | |
1404 | } else if (lno > opt->last_shown + 1) { | |
87ece7ce | 1405 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1406 | opt->output(opt, "\n", 1); |
1407 | } | |
1408 | } | |
9d8db06e TB |
1409 | if (!opt->only_matching) { |
1410 | /* | |
1411 | * In case the line we're being called with contains more than | |
1412 | * one match, leave printing each header to the loop below. | |
1413 | */ | |
1414 | show_line_header(opt, name, lno, cno, sign); | |
1415 | } | |
1416 | if (opt->color || opt->only_matching) { | |
7e8f59d5 RS |
1417 | regmatch_t match; |
1418 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
1419 | int ch = *eol; | |
1420 | int eflags = 0; | |
1421 | ||
9d8db06e TB |
1422 | if (opt->color) { |
1423 | if (sign == ':') | |
87ece7ce | 1424 | match_color = opt->colors[GREP_COLOR_MATCH_SELECTED]; |
9d8db06e | 1425 | else |
87ece7ce | 1426 | match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT]; |
9d8db06e | 1427 | if (sign == ':') |
87ece7ce | 1428 | line_color = opt->colors[GREP_COLOR_SELECTED]; |
9d8db06e | 1429 | else if (sign == '-') |
87ece7ce | 1430 | line_color = opt->colors[GREP_COLOR_CONTEXT]; |
9d8db06e | 1431 | else if (sign == '=') |
87ece7ce | 1432 | line_color = opt->colors[GREP_COLOR_FUNCTION]; |
9d8db06e | 1433 | } |
7e8f59d5 RS |
1434 | *eol = '\0'; |
1435 | while (next_match(opt, bol, eol, ctx, &match, eflags)) { | |
1f5b9cc4 RS |
1436 | if (match.rm_so == match.rm_eo) |
1437 | break; | |
5b594f45 | 1438 | |
9d8db06e TB |
1439 | if (opt->only_matching) |
1440 | show_line_header(opt, name, lno, cno, sign); | |
1441 | else | |
1442 | output_color(opt, bol, match.rm_so, line_color); | |
55f638bd | 1443 | output_color(opt, bol + match.rm_so, |
79a77109 | 1444 | match.rm_eo - match.rm_so, match_color); |
9d8db06e TB |
1445 | if (opt->only_matching) |
1446 | opt->output(opt, "\n", 1); | |
7e8f59d5 | 1447 | bol += match.rm_eo; |
9d8db06e | 1448 | cno += match.rm_eo; |
7e8f59d5 RS |
1449 | rest -= match.rm_eo; |
1450 | eflags = REG_NOTBOL; | |
1451 | } | |
1452 | *eol = ch; | |
1453 | } | |
9d8db06e TB |
1454 | if (!opt->only_matching) { |
1455 | output_color(opt, bol, rest, line_color); | |
1456 | opt->output(opt, "\n", 1); | |
1457 | } | |
7e8f59d5 RS |
1458 | } |
1459 | ||
78db6ea9 JK |
1460 | int grep_use_locks; |
1461 | ||
0579f91d TR |
1462 | /* |
1463 | * This lock protects access to the gitattributes machinery, which is | |
1464 | * not thread-safe. | |
1465 | */ | |
1466 | pthread_mutex_t grep_attr_mutex; | |
1467 | ||
78db6ea9 | 1468 | static inline void grep_attr_lock(void) |
0579f91d | 1469 | { |
78db6ea9 | 1470 | if (grep_use_locks) |
0579f91d TR |
1471 | pthread_mutex_lock(&grep_attr_mutex); |
1472 | } | |
1473 | ||
78db6ea9 | 1474 | static inline void grep_attr_unlock(void) |
0579f91d | 1475 | { |
78db6ea9 | 1476 | if (grep_use_locks) |
0579f91d TR |
1477 | pthread_mutex_unlock(&grep_attr_mutex); |
1478 | } | |
b3aeb285 JK |
1479 | |
1480 | /* | |
1481 | * Same as git_attr_mutex, but protecting the thread-unsafe object db access. | |
1482 | */ | |
1483 | pthread_mutex_t grep_read_mutex; | |
1484 | ||
e1327023 | 1485 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, char *bol, char *eol) |
2944e4e6 | 1486 | { |
60ecac98 | 1487 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1488 | if (xecfg && !xecfg->find_func) { |
acd00ea0 | 1489 | grep_source_load_driver(gs, opt->repo->index); |
94ad9d9e JK |
1490 | if (gs->driver->funcname.pattern) { |
1491 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1492 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1493 | } else { | |
1494 | xecfg = opt->priv = NULL; | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | if (xecfg) { | |
60ecac98 RS |
1499 | char buf[1]; |
1500 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1501 | xecfg->find_func_priv) >= 0; | |
1502 | } | |
1503 | ||
2944e4e6 RS |
1504 | if (bol == eol) |
1505 | return 0; | |
1506 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1507 | return 1; | |
1508 | return 0; | |
1509 | } | |
1510 | ||
e1327023 JK |
1511 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1512 | char *bol, unsigned lno) | |
2944e4e6 | 1513 | { |
e1327023 | 1514 | while (bol > gs->buf) { |
2944e4e6 RS |
1515 | char *eol = --bol; |
1516 | ||
e1327023 | 1517 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1518 | bol--; |
1519 | lno--; | |
1520 | ||
1521 | if (lno <= opt->last_shown) | |
1522 | break; | |
1523 | ||
e1327023 | 1524 | if (match_funcname(opt, gs, bol, eol)) { |
89252cd0 | 1525 | show_line(opt, bol, eol, gs->name, lno, 0, '='); |
2944e4e6 RS |
1526 | break; |
1527 | } | |
1528 | } | |
1529 | } | |
1530 | ||
a5dc20b0 RS |
1531 | static int is_empty_line(const char *bol, const char *eol); |
1532 | ||
e1327023 | 1533 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
ba8ea749 | 1534 | char *bol, char *end, unsigned lno) |
49de3216 | 1535 | { |
6653a01b | 1536 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1537 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1538 | |
49de3216 RS |
1539 | if (opt->pre_context < lno) |
1540 | from = lno - opt->pre_context; | |
1541 | if (from <= opt->last_shown) | |
1542 | from = opt->last_shown + 1; | |
6653a01b | 1543 | orig_from = from; |
a5dc20b0 RS |
1544 | if (opt->funcbody) { |
1545 | if (match_funcname(opt, gs, bol, end)) | |
1546 | comment_needed = 1; | |
1547 | else | |
1548 | funcname_needed = 1; | |
6653a01b RS |
1549 | from = opt->last_shown + 1; |
1550 | } | |
49de3216 RS |
1551 | |
1552 | /* Rewind. */ | |
6653a01b | 1553 | while (bol > gs->buf && cur > from) { |
a5dc20b0 | 1554 | char *next_bol = bol; |
2944e4e6 RS |
1555 | char *eol = --bol; |
1556 | ||
e1327023 | 1557 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1558 | bol--; |
1559 | cur--; | |
a5dc20b0 RS |
1560 | if (comment_needed && (is_empty_line(bol, eol) || |
1561 | match_funcname(opt, gs, bol, eol))) { | |
1562 | comment_needed = 0; | |
1563 | from = orig_from; | |
1564 | if (cur < from) { | |
1565 | cur++; | |
1566 | bol = next_bol; | |
1567 | break; | |
1568 | } | |
1569 | } | |
e1327023 | 1570 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1571 | funcname_lno = cur; |
1572 | funcname_needed = 0; | |
a5dc20b0 RS |
1573 | if (opt->funcbody) |
1574 | comment_needed = 1; | |
1575 | else | |
1576 | from = orig_from; | |
2944e4e6 | 1577 | } |
49de3216 RS |
1578 | } |
1579 | ||
2944e4e6 RS |
1580 | /* We need to look even further back to find a function signature. */ |
1581 | if (opt->funcname && funcname_needed) | |
e1327023 | 1582 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1583 | |
49de3216 RS |
1584 | /* Back forward. */ |
1585 | while (cur < lno) { | |
2944e4e6 | 1586 | char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1587 | |
1588 | while (*eol != '\n') | |
1589 | eol++; | |
89252cd0 | 1590 | show_line(opt, bol, eol, gs->name, cur, 0, sign); |
49de3216 RS |
1591 | bol = eol + 1; |
1592 | cur++; | |
1593 | } | |
1594 | } | |
1595 | ||
a26345b6 JH |
1596 | static int should_lookahead(struct grep_opt *opt) |
1597 | { | |
1598 | struct grep_pat *p; | |
1599 | ||
1600 | if (opt->extended) | |
1601 | return 0; /* punt for too complex stuff */ | |
1602 | if (opt->invert) | |
1603 | return 0; | |
1604 | for (p = opt->pattern_list; p; p = p->next) { | |
1605 | if (p->token != GREP_PATTERN) | |
1606 | return 0; /* punt for "header only" and stuff */ | |
1607 | } | |
1608 | return 1; | |
1609 | } | |
1610 | ||
1611 | static int look_ahead(struct grep_opt *opt, | |
1612 | unsigned long *left_p, | |
1613 | unsigned *lno_p, | |
1614 | char **bol_p) | |
1615 | { | |
1616 | unsigned lno = *lno_p; | |
1617 | char *bol = *bol_p; | |
1618 | struct grep_pat *p; | |
1619 | char *sp, *last_bol; | |
1620 | regoff_t earliest = -1; | |
1621 | ||
1622 | for (p = opt->pattern_list; p; p = p->next) { | |
1623 | int hit; | |
1624 | regmatch_t m; | |
1625 | ||
97e77784 | 1626 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1627 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1628 | continue; | |
1629 | if (earliest < 0 || m.rm_so < earliest) | |
1630 | earliest = m.rm_so; | |
1631 | } | |
1632 | ||
1633 | if (earliest < 0) { | |
1634 | *bol_p = bol + *left_p; | |
1635 | *left_p = 0; | |
1636 | return 1; | |
1637 | } | |
1638 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1639 | ; /* find the beginning of the line */ | |
1640 | last_bol = sp; | |
1641 | ||
1642 | for (sp = bol; sp < last_bol; sp++) { | |
1643 | if (*sp == '\n') | |
1644 | lno++; | |
1645 | } | |
1646 | *left_p -= last_bol - bol; | |
1647 | *bol_p = last_bol; | |
1648 | *lno_p = lno; | |
1649 | return 0; | |
1650 | } | |
1651 | ||
38bbc2ea NTND |
1652 | static int fill_textconv_grep(struct repository *r, |
1653 | struct userdiff_driver *driver, | |
335ec3bf JK |
1654 | struct grep_source *gs) |
1655 | { | |
1656 | struct diff_filespec *df; | |
1657 | char *buf; | |
1658 | size_t size; | |
1659 | ||
1660 | if (!driver || !driver->textconv) | |
1661 | return grep_source_load(gs); | |
1662 | ||
1663 | /* | |
1664 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1665 | * have to pretend to be one. If we could unify the grep_source | |
1666 | * and diff_filespec structs, this mess could just go away. | |
1667 | */ | |
1668 | df = alloc_filespec(gs->path); | |
1669 | switch (gs->type) { | |
1c41c82b | 1670 | case GREP_SOURCE_OID: |
335ec3bf JK |
1671 | fill_filespec(df, gs->identifier, 1, 0100644); |
1672 | break; | |
1673 | case GREP_SOURCE_FILE: | |
f9704c2d | 1674 | fill_filespec(df, &null_oid, 0, 0100644); |
335ec3bf JK |
1675 | break; |
1676 | default: | |
033abf97 | 1677 | BUG("attempt to textconv something without a path?"); |
335ec3bf JK |
1678 | } |
1679 | ||
1680 | /* | |
1681 | * fill_textconv is not remotely thread-safe; it may load objects | |
1682 | * behind the scenes, and it modifies the global diff tempfile | |
1683 | * structure. | |
1684 | */ | |
1685 | grep_read_lock(); | |
38bbc2ea | 1686 | size = fill_textconv(r, driver, df, &buf); |
335ec3bf JK |
1687 | grep_read_unlock(); |
1688 | free_filespec(df); | |
1689 | ||
1690 | /* | |
1691 | * The normal fill_textconv usage by the diff machinery would just keep | |
1692 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1693 | * grep code passes around a grep_source and assumes that its "buf" | |
1694 | * pointer is the beginning of the thing we are searching. So let's | |
1695 | * install our textconv'd version into the grep_source, taking care not | |
1696 | * to leak any existing buffer. | |
1697 | */ | |
1698 | grep_source_clear_data(gs); | |
1699 | gs->buf = buf; | |
1700 | gs->size = size; | |
1701 | ||
1702 | return 0; | |
1703 | } | |
1704 | ||
4aa2c475 RS |
1705 | static int is_empty_line(const char *bol, const char *eol) |
1706 | { | |
1707 | while (bol < eol && isspace(*bol)) | |
1708 | bol++; | |
1709 | return bol == eol; | |
1710 | } | |
1711 | ||
e1327023 | 1712 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1713 | { |
e1327023 | 1714 | char *bol; |
4aa2c475 | 1715 | char *peek_bol = NULL; |
e1327023 | 1716 | unsigned long left; |
83b5d2f5 | 1717 | unsigned lno = 1; |
83b5d2f5 | 1718 | unsigned last_hit = 0; |
83b5d2f5 | 1719 | int binary_match_only = 0; |
83b5d2f5 | 1720 | unsigned count = 0; |
a26345b6 | 1721 | int try_lookahead = 0; |
ba8ea749 | 1722 | int show_function = 0; |
335ec3bf | 1723 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1724 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1725 | xdemitconf_t xecfg; |
83b5d2f5 | 1726 | |
de99eb0c ES |
1727 | if (!opt->status_only && gs->name == NULL) |
1728 | BUG("grep call which could print a name requires " | |
1729 | "grep_source.name be non-NULL"); | |
1730 | ||
5b594f45 FK |
1731 | if (!opt->output) |
1732 | opt->output = std_output; | |
1733 | ||
ba8ea749 RS |
1734 | if (opt->pre_context || opt->post_context || opt->file_break || |
1735 | opt->funcbody) { | |
08303c36 RS |
1736 | /* Show hunk marks, except for the first file. */ |
1737 | if (opt->last_shown) | |
1738 | opt->show_hunk_mark = 1; | |
1739 | /* | |
1740 | * If we're using threads then we can't easily identify | |
1741 | * the first file. Always put hunk marks in that case | |
1742 | * and skip the very first one later in work_done(). | |
1743 | */ | |
1744 | if (opt->output != std_output) | |
1745 | opt->show_hunk_mark = 1; | |
1746 | } | |
431d6e7b RS |
1747 | opt->last_shown = 0; |
1748 | ||
335ec3bf | 1749 | if (opt->allow_textconv) { |
acd00ea0 | 1750 | grep_source_load_driver(gs, opt->repo->index); |
335ec3bf JK |
1751 | /* |
1752 | * We might set up the shared textconv cache data here, which | |
1753 | * is not thread-safe. | |
1754 | */ | |
1755 | grep_attr_lock(); | |
bd7ad45b | 1756 | textconv = userdiff_get_textconv(opt->repo, gs->driver); |
335ec3bf JK |
1757 | grep_attr_unlock(); |
1758 | } | |
1759 | ||
1760 | /* | |
1761 | * We know the result of a textconv is text, so we only have to care | |
1762 | * about binary handling if we are not using it. | |
1763 | */ | |
1764 | if (!textconv) { | |
1765 | switch (opt->binary) { | |
1766 | case GREP_BINARY_DEFAULT: | |
acd00ea0 | 1767 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1768 | binary_match_only = 1; |
1769 | break; | |
1770 | case GREP_BINARY_NOMATCH: | |
acd00ea0 | 1771 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1772 | return 0; /* Assume unmatch */ |
1773 | break; | |
1774 | case GREP_BINARY_TEXT: | |
1775 | break; | |
1776 | default: | |
033abf97 | 1777 | BUG("unknown binary handling mode"); |
335ec3bf | 1778 | } |
83b5d2f5 JH |
1779 | } |
1780 | ||
60ecac98 | 1781 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1782 | opt->priv = &xecfg; |
1783 | ||
a26345b6 | 1784 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1785 | |
38bbc2ea | 1786 | if (fill_textconv_grep(opt->repo, textconv, gs) < 0) |
08265798 JK |
1787 | return 0; |
1788 | ||
e1327023 JK |
1789 | bol = gs->buf; |
1790 | left = gs->size; | |
83b5d2f5 JH |
1791 | while (left) { |
1792 | char *eol, ch; | |
0ab7befa | 1793 | int hit; |
89252cd0 | 1794 | ssize_t cno; |
68d686e6 | 1795 | ssize_t col = -1, icol = -1; |
83b5d2f5 | 1796 | |
a26345b6 | 1797 | /* |
8997da38 | 1798 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1799 | * has the next hit; don't call it if we need to do |
1800 | * something more than just skipping the current line | |
1801 | * in response to an unmatch for the current line. E.g. | |
1802 | * inside a post-context window, we will show the current | |
1803 | * line as a context around the previous hit when it | |
1804 | * doesn't hit. | |
1805 | */ | |
1806 | if (try_lookahead | |
1807 | && !(last_hit | |
ba8ea749 RS |
1808 | && (show_function || |
1809 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1810 | && look_ahead(opt, &left, &lno, &bol)) |
1811 | break; | |
83b5d2f5 JH |
1812 | eol = end_of_line(bol, &left); |
1813 | ch = *eol; | |
1814 | *eol = 0; | |
1815 | ||
480c1ca6 JH |
1816 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1817 | ctx = GREP_CONTEXT_BODY; | |
1818 | ||
68d686e6 | 1819 | hit = match_line(opt, bol, eol, &col, &icol, ctx, collect_hits); |
83b5d2f5 JH |
1820 | *eol = ch; |
1821 | ||
0ab7befa JH |
1822 | if (collect_hits) |
1823 | goto next_line; | |
1824 | ||
83b5d2f5 JH |
1825 | /* "grep -v -e foo -e bla" should list lines |
1826 | * that do not have either, so inversion should | |
1827 | * be done outside. | |
1828 | */ | |
1829 | if (opt->invert) | |
1830 | hit = !hit; | |
1831 | if (opt->unmatch_name_only) { | |
1832 | if (hit) | |
1833 | return 0; | |
1834 | goto next_line; | |
1835 | } | |
1836 | if (hit) { | |
1837 | count++; | |
1838 | if (opt->status_only) | |
1839 | return 1; | |
321ffcc0 | 1840 | if (opt->name_only) { |
e1327023 | 1841 | show_name(opt, gs->name); |
321ffcc0 RS |
1842 | return 1; |
1843 | } | |
c30c10cf RS |
1844 | if (opt->count) |
1845 | goto next_line; | |
83b5d2f5 | 1846 | if (binary_match_only) { |
5b594f45 | 1847 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1848 | output_color(opt, gs->name, strlen(gs->name), |
fa151dc5 | 1849 | opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1850 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1851 | return 1; |
1852 | } | |
83b5d2f5 JH |
1853 | /* Hit at this line. If we haven't shown the |
1854 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1855 | */ |
ba8ea749 | 1856 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1857 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1858 | else if (opt->funcname) |
e1327023 | 1859 | show_funcname_line(opt, gs, bol, lno); |
89252cd0 TB |
1860 | cno = opt->invert ? icol : col; |
1861 | if (cno < 0) { | |
1862 | /* | |
1863 | * A negative cno indicates that there was no | |
1864 | * match on the line. We are thus inverted and | |
1865 | * being asked to show all lines that _don't_ | |
1866 | * match a given expression. Therefore, set cno | |
1867 | * to 0 to suggest the whole line matches. | |
1868 | */ | |
1869 | cno = 0; | |
1870 | } | |
1871 | show_line(opt, bol, eol, gs->name, lno, cno + 1, ':'); | |
5dd06d38 | 1872 | last_hit = lno; |
ba8ea749 RS |
1873 | if (opt->funcbody) |
1874 | show_function = 1; | |
1875 | goto next_line; | |
83b5d2f5 | 1876 | } |
4aa2c475 RS |
1877 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1878 | unsigned long peek_left = left; | |
1879 | char *peek_eol = eol; | |
1880 | ||
1881 | /* | |
1882 | * Trailing empty lines are not interesting. | |
1883 | * Peek past them to see if they belong to the | |
1884 | * body of the current function. | |
1885 | */ | |
1886 | peek_bol = bol; | |
1887 | while (is_empty_line(peek_bol, peek_eol)) { | |
1888 | peek_bol = peek_eol + 1; | |
1889 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1890 | } | |
1891 | ||
1892 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1893 | show_function = 0; | |
1894 | } | |
ba8ea749 RS |
1895 | if (show_function || |
1896 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1897 | /* If the last hit is within the post context, |
1898 | * we need to show this line. | |
1899 | */ | |
89252cd0 | 1900 | show_line(opt, bol, eol, gs->name, lno, col + 1, '-'); |
83b5d2f5 | 1901 | } |
83b5d2f5 JH |
1902 | |
1903 | next_line: | |
1904 | bol = eol + 1; | |
1905 | if (!left) | |
1906 | break; | |
1907 | left--; | |
1908 | lno++; | |
1909 | } | |
1910 | ||
0ab7befa JH |
1911 | if (collect_hits) |
1912 | return 0; | |
b48fb5b6 | 1913 | |
83b5d2f5 | 1914 | if (opt->status_only) |
e1f68c66 | 1915 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1916 | if (opt->unmatch_name_only) { |
1917 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1918 | show_name(opt, gs->name); |
83b5d2f5 JH |
1919 | return 1; |
1920 | } | |
1921 | ||
60ecac98 RS |
1922 | xdiff_clear_find_func(&xecfg); |
1923 | opt->priv = NULL; | |
1924 | ||
83b5d2f5 JH |
1925 | /* NEEDSWORK: |
1926 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1927 | * which feels mostly useless but sometimes useful. Maybe | |
1928 | * make it another option? For now suppress them. | |
1929 | */ | |
5b594f45 FK |
1930 | if (opt->count && count) { |
1931 | char buf[32]; | |
f76d947a RS |
1932 | if (opt->pathname) { |
1933 | output_color(opt, gs->name, strlen(gs->name), | |
fa151dc5 | 1934 | opt->colors[GREP_COLOR_FILENAME]); |
f76d947a RS |
1935 | output_sep(opt, ':'); |
1936 | } | |
1a168e5c | 1937 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 1938 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 1939 | return 1; |
5b594f45 | 1940 | } |
83b5d2f5 JH |
1941 | return !!last_hit; |
1942 | } | |
1943 | ||
0ab7befa JH |
1944 | static void clr_hit_marker(struct grep_expr *x) |
1945 | { | |
1946 | /* All-hit markers are meaningful only at the very top level | |
1947 | * OR node. | |
1948 | */ | |
1949 | while (1) { | |
1950 | x->hit = 0; | |
1951 | if (x->node != GREP_NODE_OR) | |
1952 | return; | |
1953 | x->u.binary.left->hit = 0; | |
1954 | x = x->u.binary.right; | |
1955 | } | |
1956 | } | |
1957 | ||
1958 | static int chk_hit_marker(struct grep_expr *x) | |
1959 | { | |
1960 | /* Top level nodes have hit markers. See if they all are hits */ | |
1961 | while (1) { | |
1962 | if (x->node != GREP_NODE_OR) | |
1963 | return x->hit; | |
1964 | if (!x->u.binary.left->hit) | |
1965 | return 0; | |
1966 | x = x->u.binary.right; | |
1967 | } | |
1968 | } | |
1969 | ||
e1327023 | 1970 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
1971 | { |
1972 | /* | |
1973 | * we do not have to do the two-pass grep when we do not check | |
1974 | * buffer-wide "all-match". | |
1975 | */ | |
1976 | if (!opt->all_match) | |
e1327023 | 1977 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
1978 | |
1979 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
1980 | * We first clear hit markers from them. | |
1981 | */ | |
1982 | clr_hit_marker(opt->pattern_expression); | |
e1327023 | 1983 | grep_source_1(opt, gs, 1); |
0ab7befa JH |
1984 | |
1985 | if (!chk_hit_marker(opt->pattern_expression)) | |
1986 | return 0; | |
1987 | ||
e1327023 JK |
1988 | return grep_source_1(opt, gs, 0); |
1989 | } | |
1990 | ||
c876d6da | 1991 | int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) |
e1327023 JK |
1992 | { |
1993 | struct grep_source gs; | |
1994 | int r; | |
1995 | ||
55c61688 | 1996 | grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); |
e1327023 JK |
1997 | gs.buf = buf; |
1998 | gs.size = size; | |
1999 | ||
2000 | r = grep_source(opt, &gs); | |
2001 | ||
2002 | grep_source_clear(&gs); | |
2003 | return r; | |
2004 | } | |
2005 | ||
2006 | void grep_source_init(struct grep_source *gs, enum grep_source_type type, | |
55c61688 NTND |
2007 | const char *name, const char *path, |
2008 | const void *identifier) | |
e1327023 JK |
2009 | { |
2010 | gs->type = type; | |
8c53f071 JK |
2011 | gs->name = xstrdup_or_null(name); |
2012 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
2013 | gs->buf = NULL; |
2014 | gs->size = 0; | |
94ad9d9e | 2015 | gs->driver = NULL; |
e1327023 JK |
2016 | |
2017 | switch (type) { | |
2018 | case GREP_SOURCE_FILE: | |
2019 | gs->identifier = xstrdup(identifier); | |
2020 | break; | |
1c41c82b BW |
2021 | case GREP_SOURCE_OID: |
2022 | gs->identifier = oiddup(identifier); | |
e1327023 JK |
2023 | break; |
2024 | case GREP_SOURCE_BUF: | |
2025 | gs->identifier = NULL; | |
4538eef5 | 2026 | break; |
e1327023 JK |
2027 | } |
2028 | } | |
2029 | ||
2030 | void grep_source_clear(struct grep_source *gs) | |
2031 | { | |
88ce3ef6 ÆAB |
2032 | FREE_AND_NULL(gs->name); |
2033 | FREE_AND_NULL(gs->path); | |
2034 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
2035 | grep_source_clear_data(gs); |
2036 | } | |
2037 | ||
2038 | void grep_source_clear_data(struct grep_source *gs) | |
2039 | { | |
2040 | switch (gs->type) { | |
2041 | case GREP_SOURCE_FILE: | |
1c41c82b | 2042 | case GREP_SOURCE_OID: |
6a83d902 | 2043 | FREE_AND_NULL(gs->buf); |
e1327023 JK |
2044 | gs->size = 0; |
2045 | break; | |
2046 | case GREP_SOURCE_BUF: | |
2047 | /* leave user-provided buf intact */ | |
2048 | break; | |
2049 | } | |
2050 | } | |
2051 | ||
1c41c82b | 2052 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
2053 | { |
2054 | enum object_type type; | |
2055 | ||
2056 | grep_read_lock(); | |
b4f5aca4 | 2057 | gs->buf = read_object_file(gs->identifier, &type, &gs->size); |
e1327023 JK |
2058 | grep_read_unlock(); |
2059 | ||
2060 | if (!gs->buf) | |
2061 | return error(_("'%s': unable to read %s"), | |
2062 | gs->name, | |
1c41c82b | 2063 | oid_to_hex(gs->identifier)); |
e1327023 JK |
2064 | return 0; |
2065 | } | |
2066 | ||
2067 | static int grep_source_load_file(struct grep_source *gs) | |
2068 | { | |
2069 | const char *filename = gs->identifier; | |
2070 | struct stat st; | |
2071 | char *data; | |
2072 | size_t size; | |
2073 | int i; | |
2074 | ||
2075 | if (lstat(filename, &st) < 0) { | |
2076 | err_ret: | |
2077 | if (errno != ENOENT) | |
7645d8f1 | 2078 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
2079 | return -1; |
2080 | } | |
2081 | if (!S_ISREG(st.st_mode)) | |
2082 | return -1; | |
2083 | size = xsize_t(st.st_size); | |
2084 | i = open(filename, O_RDONLY); | |
2085 | if (i < 0) | |
2086 | goto err_ret; | |
3733e694 | 2087 | data = xmallocz(size); |
e1327023 | 2088 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 2089 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
2090 | close(i); |
2091 | free(data); | |
2092 | return -1; | |
2093 | } | |
2094 | close(i); | |
e1327023 JK |
2095 | |
2096 | gs->buf = data; | |
2097 | gs->size = size; | |
2098 | return 0; | |
2099 | } | |
2100 | ||
3083301e | 2101 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
2102 | { |
2103 | if (gs->buf) | |
2104 | return 0; | |
2105 | ||
2106 | switch (gs->type) { | |
2107 | case GREP_SOURCE_FILE: | |
2108 | return grep_source_load_file(gs); | |
1c41c82b BW |
2109 | case GREP_SOURCE_OID: |
2110 | return grep_source_load_oid(gs); | |
e1327023 JK |
2111 | case GREP_SOURCE_BUF: |
2112 | return gs->buf ? 0 : -1; | |
2113 | } | |
033abf97 | 2114 | BUG("invalid grep_source type to load"); |
0ab7befa | 2115 | } |
94ad9d9e | 2116 | |
acd00ea0 NTND |
2117 | void grep_source_load_driver(struct grep_source *gs, |
2118 | struct index_state *istate) | |
94ad9d9e JK |
2119 | { |
2120 | if (gs->driver) | |
2121 | return; | |
2122 | ||
2123 | grep_attr_lock(); | |
55c61688 | 2124 | if (gs->path) |
acd00ea0 | 2125 | gs->driver = userdiff_find_by_path(istate, gs->path); |
94ad9d9e JK |
2126 | if (!gs->driver) |
2127 | gs->driver = userdiff_find_by_name("default"); | |
2128 | grep_attr_unlock(); | |
2129 | } | |
41b59bfc | 2130 | |
acd00ea0 NTND |
2131 | static int grep_source_is_binary(struct grep_source *gs, |
2132 | struct index_state *istate) | |
41b59bfc | 2133 | { |
acd00ea0 | 2134 | grep_source_load_driver(gs, istate); |
41b59bfc JK |
2135 | if (gs->driver->binary != -1) |
2136 | return gs->driver->binary; | |
2137 | ||
2138 | if (!grep_source_load(gs)) | |
2139 | return buffer_is_binary(gs->buf, gs->size); | |
2140 | ||
2141 | return 0; | |
2142 | } |