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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). | |
57d46604 CMAB |
153 | * |
154 | * If using PCRE, make sure that the library is configured | |
155 | * to use the same allocator as Git (e.g. nedmalloc on Windows). | |
7687a054 | 156 | */ |
38bbc2ea | 157 | void grep_init(struct grep_opt *opt, struct repository *repo, const char *prefix) |
7687a054 JH |
158 | { |
159 | struct grep_opt *def = &grep_defaults; | |
fa151dc5 | 160 | int i; |
7687a054 | 161 | |
57d46604 CMAB |
162 | #ifdef USE_LIBPCRE1 |
163 | pcre_malloc = malloc; | |
164 | pcre_free = free; | |
165 | #endif | |
166 | ||
7687a054 | 167 | memset(opt, 0, sizeof(*opt)); |
38bbc2ea | 168 | opt->repo = repo; |
7687a054 JH |
169 | opt->prefix = prefix; |
170 | opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; | |
171 | opt->pattern_tail = &opt->pattern_list; | |
172 | opt->header_tail = &opt->header_list; | |
173 | ||
9d8db06e | 174 | opt->only_matching = def->only_matching; |
7687a054 JH |
175 | opt->color = def->color; |
176 | opt->extended_regexp_option = def->extended_regexp_option; | |
177 | opt->pattern_type_option = def->pattern_type_option; | |
178 | opt->linenum = def->linenum; | |
017c0fcf | 179 | opt->columnnum = def->columnnum; |
7687a054 JH |
180 | opt->max_depth = def->max_depth; |
181 | opt->pathname = def->pathname; | |
7687a054 | 182 | opt->relative = def->relative; |
379642bc | 183 | opt->output = def->output; |
7687a054 | 184 | |
fa151dc5 NTND |
185 | for (i = 0; i < NR_GREP_COLORS; i++) |
186 | color_set(opt->colors[i], def->colors[i]); | |
7687a054 | 187 | } |
07a7d656 | 188 | |
8465541e | 189 | static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
c5c31d33 | 190 | { |
07a3d411 ÆAB |
191 | /* |
192 | * When committing to the pattern type by setting the relevant | |
193 | * fields in grep_opt it's generally not necessary to zero out | |
194 | * the fields we're not choosing, since they won't have been | |
195 | * set by anything. The extended_regexp_option field is the | |
196 | * only exception to this. | |
197 | * | |
198 | * This is because in the process of parsing grep.patternType | |
199 | * & grep.extendedRegexp we set opt->pattern_type_option and | |
200 | * opt->extended_regexp_option, respectively. We then | |
201 | * internally use opt->extended_regexp_option to see if we're | |
202 | * compiling an ERE. It must be unset if that's not actually | |
203 | * the case. | |
204 | */ | |
205 | if (pattern_type != GREP_PATTERN_TYPE_ERE && | |
206 | opt->extended_regexp_option) | |
207 | opt->extended_regexp_option = 0; | |
208 | ||
c5c31d33 JH |
209 | switch (pattern_type) { |
210 | case GREP_PATTERN_TYPE_UNSPECIFIED: | |
211 | /* fall through */ | |
212 | ||
213 | case GREP_PATTERN_TYPE_BRE: | |
c5c31d33 JH |
214 | break; |
215 | ||
216 | case GREP_PATTERN_TYPE_ERE: | |
07a3d411 | 217 | opt->extended_regexp_option = 1; |
c5c31d33 JH |
218 | break; |
219 | ||
220 | case GREP_PATTERN_TYPE_FIXED: | |
221 | opt->fixed = 1; | |
c5c31d33 JH |
222 | break; |
223 | ||
224 | case GREP_PATTERN_TYPE_PCRE: | |
94da9193 | 225 | #ifdef USE_LIBPCRE2 |
94da9193 ÆAB |
226 | opt->pcre2 = 1; |
227 | #else | |
228 | /* | |
229 | * It's important that pcre1 always be assigned to | |
230 | * even when there's no USE_LIBPCRE* defined. We still | |
231 | * call the PCRE stub function, it just dies with | |
232 | * "cannot use Perl-compatible regexes[...]". | |
233 | */ | |
6d4b5747 | 234 | opt->pcre1 = 1; |
94da9193 | 235 | #endif |
c5c31d33 JH |
236 | break; |
237 | } | |
238 | } | |
239 | ||
8465541e JH |
240 | void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) |
241 | { | |
242 | if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) | |
243 | grep_set_pattern_type_option(pattern_type, opt); | |
244 | else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) | |
245 | grep_set_pattern_type_option(opt->pattern_type_option, opt); | |
246 | else if (opt->extended_regexp_option) | |
07a3d411 ÆAB |
247 | /* |
248 | * This branch *must* happen after setting from the | |
249 | * opt->pattern_type_option above, we don't want | |
250 | * grep.extendedRegexp to override grep.patternType! | |
251 | */ | |
8465541e JH |
252 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); |
253 | } | |
254 | ||
fc456751 RS |
255 | static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, |
256 | const char *origin, int no, | |
257 | enum grep_pat_token t, | |
258 | enum grep_header_field field) | |
a4d7d2c6 JH |
259 | { |
260 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
526a858a | 261 | p->pattern = xmemdupz(pat, patlen); |
fc456751 RS |
262 | p->patternlen = patlen; |
263 | p->origin = origin; | |
264 | p->no = no; | |
265 | p->token = t; | |
a4d7d2c6 | 266 | p->field = field; |
fc456751 RS |
267 | return p; |
268 | } | |
269 | ||
2b3873ff RS |
270 | static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p) |
271 | { | |
272 | **tail = p; | |
273 | *tail = &p->next; | |
a4d7d2c6 | 274 | p->next = NULL; |
526a858a RS |
275 | |
276 | switch (p->token) { | |
277 | case GREP_PATTERN: /* atom */ | |
278 | case GREP_PATTERN_HEAD: | |
279 | case GREP_PATTERN_BODY: | |
280 | for (;;) { | |
281 | struct grep_pat *new_pat; | |
282 | size_t len = 0; | |
283 | char *cp = p->pattern + p->patternlen, *nl = NULL; | |
284 | while (++len <= p->patternlen) { | |
285 | if (*(--cp) == '\n') { | |
286 | nl = cp; | |
287 | break; | |
288 | } | |
289 | } | |
290 | if (!nl) | |
291 | break; | |
292 | new_pat = create_grep_pat(nl + 1, len - 1, p->origin, | |
293 | p->no, p->token, p->field); | |
294 | new_pat->next = p->next; | |
295 | if (!p->next) | |
296 | *tail = &new_pat->next; | |
297 | p->next = new_pat; | |
298 | *nl = '\0'; | |
299 | p->patternlen -= len; | |
300 | } | |
301 | break; | |
302 | default: | |
303 | break; | |
304 | } | |
2b3873ff RS |
305 | } |
306 | ||
fc456751 RS |
307 | void append_header_grep_pattern(struct grep_opt *opt, |
308 | enum grep_header_field field, const char *pat) | |
309 | { | |
310 | struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, | |
311 | GREP_PATTERN_HEAD, field); | |
baa6378f JH |
312 | if (field == GREP_HEADER_REFLOG) |
313 | opt->use_reflog_filter = 1; | |
2b3873ff | 314 | do_append_grep_pat(&opt->header_tail, p); |
a4d7d2c6 JH |
315 | } |
316 | ||
83b5d2f5 JH |
317 | void append_grep_pattern(struct grep_opt *opt, const char *pat, |
318 | const char *origin, int no, enum grep_pat_token t) | |
ed40a095 RS |
319 | { |
320 | append_grep_pat(opt, pat, strlen(pat), origin, no, t); | |
321 | } | |
322 | ||
323 | void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, | |
324 | const char *origin, int no, enum grep_pat_token t) | |
83b5d2f5 | 325 | { |
fc456751 | 326 | struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0); |
2b3873ff | 327 | do_append_grep_pat(&opt->pattern_tail, p); |
83b5d2f5 JH |
328 | } |
329 | ||
5b594f45 FK |
330 | struct grep_opt *grep_opt_dup(const struct grep_opt *opt) |
331 | { | |
332 | struct grep_pat *pat; | |
333 | struct grep_opt *ret = xmalloc(sizeof(struct grep_opt)); | |
334 | *ret = *opt; | |
335 | ||
336 | ret->pattern_list = NULL; | |
337 | ret->pattern_tail = &ret->pattern_list; | |
338 | ||
339 | for(pat = opt->pattern_list; pat != NULL; pat = pat->next) | |
340 | { | |
341 | if(pat->token == GREP_PATTERN_HEAD) | |
342 | append_header_grep_pattern(ret, pat->field, | |
343 | pat->pattern); | |
344 | else | |
ed40a095 RS |
345 | append_grep_pat(ret, pat->pattern, pat->patternlen, |
346 | pat->origin, pat->no, pat->token); | |
5b594f45 FK |
347 | } |
348 | ||
349 | return ret; | |
350 | } | |
351 | ||
a30c148a MK |
352 | static NORETURN void compile_regexp_failed(const struct grep_pat *p, |
353 | const char *error) | |
354 | { | |
355 | char where[1024]; | |
356 | ||
357 | if (p->no) | |
19bdd3e7 | 358 | xsnprintf(where, sizeof(where), "In '%s' at %d, ", p->origin, p->no); |
a30c148a | 359 | else if (p->origin) |
19bdd3e7 | 360 | xsnprintf(where, sizeof(where), "%s, ", p->origin); |
a30c148a MK |
361 | else |
362 | where[0] = 0; | |
363 | ||
364 | die("%s'%s': %s", where, p->pattern, error); | |
365 | } | |
366 | ||
543f1c0c ÆAB |
367 | static int is_fixed(const char *s, size_t len) |
368 | { | |
369 | size_t i; | |
370 | ||
371 | for (i = 0; i < len; i++) { | |
372 | if (is_regex_special(s[i])) | |
373 | return 0; | |
374 | } | |
375 | ||
376 | return 1; | |
377 | } | |
378 | ||
219e65b6 ÆAB |
379 | static int has_null(const char *s, size_t len) |
380 | { | |
381 | /* | |
382 | * regcomp cannot accept patterns with NULs so when using it | |
383 | * we consider any pattern containing a NUL fixed. | |
384 | */ | |
385 | if (memchr(s, 0, len)) | |
386 | return 1; | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
3485bea1 | 391 | #ifdef USE_LIBPCRE1 |
6d4b5747 | 392 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
393 | { |
394 | const char *error; | |
395 | int erroffset; | |
fba4f125 | 396 | int options = PCRE_MULTILINE; |
63e7e9d8 | 397 | |
9d9babb8 NTND |
398 | if (opt->ignore_case) { |
399 | if (has_non_ascii(p->pattern)) | |
6d4b5747 | 400 | p->pcre1_tables = pcre_maketables(); |
63e7e9d8 | 401 | options |= PCRE_CASELESS; |
9d9babb8 | 402 | } |
18547aac NTND |
403 | if (is_utf8_locale() && has_non_ascii(p->pattern)) |
404 | options |= PCRE_UTF8; | |
63e7e9d8 | 405 | |
6d4b5747 ÆAB |
406 | p->pcre1_regexp = pcre_compile(p->pattern, options, &error, &erroffset, |
407 | p->pcre1_tables); | |
408 | if (!p->pcre1_regexp) | |
63e7e9d8 MK |
409 | compile_regexp_failed(p, error); |
410 | ||
2fff1e19 | 411 | p->pcre1_extra_info = pcre_study(p->pcre1_regexp, GIT_PCRE_STUDY_JIT_COMPILE, &error); |
6d4b5747 | 412 | if (!p->pcre1_extra_info && error) |
63e7e9d8 | 413 | die("%s", error); |
fbaceaac | 414 | |
e87de7ca | 415 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
416 | pcre_config(PCRE_CONFIG_JIT, &p->pcre1_jit_on); |
417 | if (p->pcre1_jit_on == 1) { | |
418 | p->pcre1_jit_stack = pcre_jit_stack_alloc(1, 1024 * 1024); | |
419 | if (!p->pcre1_jit_stack) | |
420 | die("Couldn't allocate PCRE JIT stack"); | |
421 | pcre_assign_jit_stack(p->pcre1_extra_info, NULL, p->pcre1_jit_stack); | |
422 | } else if (p->pcre1_jit_on != 0) { | |
033abf97 | 423 | BUG("The pcre1_jit_on variable should be 0 or 1, not %d", |
fbaceaac ÆAB |
424 | p->pcre1_jit_on); |
425 | } | |
426 | #endif | |
63e7e9d8 MK |
427 | } |
428 | ||
6d4b5747 | 429 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
430 | regmatch_t *match, int eflags) |
431 | { | |
432 | int ovector[30], ret, flags = 0; | |
433 | ||
434 | if (eflags & REG_NOTBOL) | |
435 | flags |= PCRE_NOTBOL; | |
436 | ||
e87de7ca | 437 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
438 | if (p->pcre1_jit_on) { |
439 | ret = pcre_jit_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
440 | eol - line, 0, flags, ovector, | |
441 | ARRAY_SIZE(ovector), p->pcre1_jit_stack); | |
442 | } else | |
443 | #endif | |
444 | { | |
445 | ret = pcre_exec(p->pcre1_regexp, p->pcre1_extra_info, line, | |
446 | eol - line, 0, flags, ovector, | |
447 | ARRAY_SIZE(ovector)); | |
448 | } | |
449 | ||
63e7e9d8 MK |
450 | if (ret < 0 && ret != PCRE_ERROR_NOMATCH) |
451 | die("pcre_exec failed with error code %d", ret); | |
452 | if (ret > 0) { | |
453 | ret = 0; | |
454 | match->rm_so = ovector[0]; | |
455 | match->rm_eo = ovector[1]; | |
456 | } | |
457 | ||
458 | return ret; | |
459 | } | |
460 | ||
6d4b5747 | 461 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 | 462 | { |
6d4b5747 | 463 | pcre_free(p->pcre1_regexp); |
e87de7ca | 464 | #ifdef GIT_PCRE1_USE_JIT |
fbaceaac ÆAB |
465 | if (p->pcre1_jit_on) { |
466 | pcre_free_study(p->pcre1_extra_info); | |
467 | pcre_jit_stack_free(p->pcre1_jit_stack); | |
468 | } else | |
469 | #endif | |
470 | { | |
471 | pcre_free(p->pcre1_extra_info); | |
472 | } | |
6d4b5747 | 473 | pcre_free((void *)p->pcre1_tables); |
63e7e9d8 | 474 | } |
3485bea1 | 475 | #else /* !USE_LIBPCRE1 */ |
6d4b5747 | 476 | static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt) |
63e7e9d8 MK |
477 | { |
478 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
479 | } | |
480 | ||
6d4b5747 | 481 | static int pcre1match(struct grep_pat *p, const char *line, const char *eol, |
63e7e9d8 MK |
482 | regmatch_t *match, int eflags) |
483 | { | |
484 | return 1; | |
485 | } | |
486 | ||
6d4b5747 | 487 | static void free_pcre1_regexp(struct grep_pat *p) |
63e7e9d8 MK |
488 | { |
489 | } | |
3485bea1 | 490 | #endif /* !USE_LIBPCRE1 */ |
63e7e9d8 | 491 | |
94da9193 ÆAB |
492 | #ifdef USE_LIBPCRE2 |
493 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
494 | { | |
495 | int error; | |
496 | PCRE2_UCHAR errbuf[256]; | |
497 | PCRE2_SIZE erroffset; | |
498 | int options = PCRE2_MULTILINE; | |
499 | const uint8_t *character_tables = NULL; | |
500 | int jitret; | |
a25b9085 ÆAB |
501 | int patinforet; |
502 | size_t jitsizearg; | |
94da9193 ÆAB |
503 | |
504 | assert(opt->pcre2); | |
505 | ||
506 | p->pcre2_compile_context = NULL; | |
507 | ||
508 | if (opt->ignore_case) { | |
509 | if (has_non_ascii(p->pattern)) { | |
510 | character_tables = pcre2_maketables(NULL); | |
511 | p->pcre2_compile_context = pcre2_compile_context_create(NULL); | |
512 | pcre2_set_character_tables(p->pcre2_compile_context, character_tables); | |
513 | } | |
514 | options |= PCRE2_CASELESS; | |
515 | } | |
516 | if (is_utf8_locale() && has_non_ascii(p->pattern)) | |
517 | options |= PCRE2_UTF; | |
518 | ||
519 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
520 | p->patternlen, options, &error, &erroffset, | |
521 | p->pcre2_compile_context); | |
522 | ||
523 | if (p->pcre2_pattern) { | |
524 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, NULL); | |
525 | if (!p->pcre2_match_data) | |
526 | die("Couldn't allocate PCRE2 match data"); | |
527 | } else { | |
528 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
529 | compile_regexp_failed(p, (const char *)&errbuf); | |
530 | } | |
531 | ||
532 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
533 | if (p->pcre2_jit_on == 1) { | |
534 | jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE); | |
535 | if (jitret) | |
536 | die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret); | |
a25b9085 ÆAB |
537 | |
538 | /* | |
539 | * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just | |
540 | * tells us whether the library itself supports JIT, | |
541 | * but to see whether we're going to be actually using | |
542 | * JIT we need to extract PCRE2_INFO_JITSIZE from the | |
543 | * pattern *after* we do pcre2_jit_compile() above. | |
544 | * | |
545 | * This is because if the pattern contains the | |
546 | * (*NO_JIT) verb (see pcre2syntax(3)) | |
547 | * pcre2_jit_compile() will exit early with 0. If we | |
548 | * then proceed to call pcre2_jit_match() further down | |
549 | * the line instead of pcre2_match() we'll either | |
550 | * segfault (pre PCRE 10.31) or run into a fatal error | |
551 | * (post PCRE2 10.31) | |
552 | */ | |
553 | patinforet = pcre2_pattern_info(p->pcre2_pattern, PCRE2_INFO_JITSIZE, &jitsizearg); | |
554 | if (patinforet) | |
555 | BUG("pcre2_pattern_info() failed: %d", patinforet); | |
556 | if (jitsizearg == 0) { | |
557 | p->pcre2_jit_on = 0; | |
558 | return; | |
559 | } | |
560 | ||
94da9193 ÆAB |
561 | p->pcre2_jit_stack = pcre2_jit_stack_create(1, 1024 * 1024, NULL); |
562 | if (!p->pcre2_jit_stack) | |
563 | die("Couldn't allocate PCRE2 JIT stack"); | |
564 | p->pcre2_match_context = pcre2_match_context_create(NULL); | |
674ad936 | 565 | if (!p->pcre2_match_context) |
94da9193 ÆAB |
566 | die("Couldn't allocate PCRE2 match context"); |
567 | pcre2_jit_stack_assign(p->pcre2_match_context, NULL, p->pcre2_jit_stack); | |
568 | } else if (p->pcre2_jit_on != 0) { | |
033abf97 | 569 | BUG("The pcre2_jit_on variable should be 0 or 1, not %d", |
f0025327 | 570 | p->pcre2_jit_on); |
94da9193 ÆAB |
571 | } |
572 | } | |
573 | ||
574 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
575 | regmatch_t *match, int eflags) | |
576 | { | |
577 | int ret, flags = 0; | |
578 | PCRE2_SIZE *ovector; | |
579 | PCRE2_UCHAR errbuf[256]; | |
580 | ||
581 | if (eflags & REG_NOTBOL) | |
582 | flags |= PCRE2_NOTBOL; | |
583 | ||
584 | if (p->pcre2_jit_on) | |
585 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
586 | eol - line, 0, flags, p->pcre2_match_data, | |
587 | NULL); | |
588 | else | |
589 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
590 | eol - line, 0, flags, p->pcre2_match_data, | |
591 | NULL); | |
592 | ||
593 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
594 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
595 | die("%s failed with error code %d: %s", | |
596 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
597 | errbuf); | |
598 | } | |
599 | if (ret > 0) { | |
600 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
601 | ret = 0; | |
602 | match->rm_so = (int)ovector[0]; | |
603 | match->rm_eo = (int)ovector[1]; | |
604 | } | |
605 | ||
606 | return ret; | |
607 | } | |
608 | ||
609 | static void free_pcre2_pattern(struct grep_pat *p) | |
610 | { | |
611 | pcre2_compile_context_free(p->pcre2_compile_context); | |
612 | pcre2_code_free(p->pcre2_pattern); | |
613 | pcre2_match_data_free(p->pcre2_match_data); | |
614 | pcre2_jit_stack_free(p->pcre2_jit_stack); | |
615 | pcre2_match_context_free(p->pcre2_match_context); | |
616 | } | |
617 | #else /* !USE_LIBPCRE2 */ | |
618 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
619 | { | |
620 | /* | |
621 | * Unreachable until USE_LIBPCRE2 becomes synonymous with | |
622 | * USE_LIBPCRE. See the sibling comment in | |
623 | * grep_set_pattern_type_option(). | |
624 | */ | |
625 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); | |
626 | } | |
627 | ||
628 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
629 | regmatch_t *match, int eflags) | |
630 | { | |
631 | return 1; | |
632 | } | |
633 | ||
634 | static void free_pcre2_pattern(struct grep_pat *p) | |
635 | { | |
636 | } | |
637 | #endif /* !USE_LIBPCRE2 */ | |
638 | ||
793dc676 NTND |
639 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
640 | { | |
641 | struct strbuf sb = STRBUF_INIT; | |
642 | int err; | |
1ceababc | 643 | int regflags = 0; |
793dc676 NTND |
644 | |
645 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
646 | if (opt->ignore_case) |
647 | regflags |= REG_ICASE; | |
648 | err = regcomp(&p->regexp, sb.buf, regflags); | |
649 | if (opt->debug) | |
650 | fprintf(stderr, "fixed %s\n", sb.buf); | |
651 | strbuf_release(&sb); | |
652 | if (err) { | |
653 | char errbuf[1024]; | |
654 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
793dc676 NTND |
655 | compile_regexp_failed(p, errbuf); |
656 | } | |
657 | } | |
658 | ||
83b5d2f5 JH |
659 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
660 | { | |
07a3d411 | 661 | int ascii_only; |
c822255c | 662 | int err; |
07a3d411 | 663 | int regflags = REG_NEWLINE; |
c822255c | 664 | |
d7eb527d | 665 | p->word_regexp = opt->word_regexp; |
5183bf67 | 666 | p->ignore_case = opt->ignore_case; |
5c1ebcca | 667 | ascii_only = !has_non_ascii(p->pattern); |
d7eb527d | 668 | |
793dc676 NTND |
669 | /* |
670 | * Even when -F (fixed) asks us to do a non-regexp search, we | |
671 | * may not be able to correctly case-fold when -i | |
672 | * (ignore-case) is asked (in which case, we'll synthesize a | |
673 | * regexp to match the pattern that matches regexp special | |
674 | * characters literally, while ignoring case differences). On | |
675 | * the other hand, even without -F, if the pattern does not | |
676 | * have any regexp special characters and there is no need for | |
677 | * case-folding search, we can internally turn it into a | |
678 | * simple string match using kws. p->fixed tells us if we | |
679 | * want to use kws. | |
680 | */ | |
219e65b6 ÆAB |
681 | if (opt->fixed || |
682 | has_null(p->pattern, p->patternlen) || | |
683 | is_fixed(p->pattern, p->patternlen)) | |
07a3d411 | 684 | p->fixed = !p->ignore_case || ascii_only; |
9eceddee FK |
685 | |
686 | if (p->fixed) { | |
07a3d411 | 687 | p->kws = kwsalloc(p->ignore_case ? tolower_trans_tbl : NULL); |
9eceddee FK |
688 | kwsincr(p->kws, p->pattern, p->patternlen); |
689 | kwsprep(p->kws); | |
c822255c | 690 | return; |
793dc676 NTND |
691 | } else if (opt->fixed) { |
692 | /* | |
693 | * We come here when the pattern has the non-ascii | |
694 | * characters we cannot case-fold, and asked to | |
695 | * ignore-case. | |
696 | */ | |
697 | compile_fixed_regexp(p, opt); | |
698 | return; | |
9eceddee | 699 | } |
c822255c | 700 | |
94da9193 ÆAB |
701 | if (opt->pcre2) { |
702 | compile_pcre2_pattern(p, opt); | |
703 | return; | |
704 | } | |
705 | ||
6d4b5747 ÆAB |
706 | if (opt->pcre1) { |
707 | compile_pcre1_regexp(p, opt); | |
63e7e9d8 MK |
708 | return; |
709 | } | |
710 | ||
07a3d411 ÆAB |
711 | if (p->ignore_case) |
712 | regflags |= REG_ICASE; | |
713 | if (opt->extended_regexp_option) | |
714 | regflags |= REG_EXTENDED; | |
715 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
716 | if (err) { |
717 | char errbuf[1024]; | |
83b5d2f5 | 718 | regerror(err, &p->regexp, errbuf, 1024); |
a30c148a | 719 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
720 | } |
721 | } | |
722 | ||
0ab7befa | 723 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
724 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
725 | { | |
726 | struct grep_pat *p; | |
727 | struct grep_expr *x; | |
728 | ||
729 | p = *list; | |
c922b01f LT |
730 | if (!p) |
731 | return NULL; | |
83b5d2f5 JH |
732 | switch (p->token) { |
733 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
734 | case GREP_PATTERN_HEAD: |
735 | case GREP_PATTERN_BODY: | |
83b5d2f5 JH |
736 | x = xcalloc(1, sizeof (struct grep_expr)); |
737 | x->node = GREP_NODE_ATOM; | |
738 | x->u.atom = p; | |
739 | *list = p->next; | |
740 | return x; | |
741 | case GREP_OPEN_PAREN: | |
742 | *list = p->next; | |
0ab7befa | 743 | x = compile_pattern_or(list); |
83b5d2f5 JH |
744 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
745 | die("unmatched parenthesis"); | |
746 | *list = (*list)->next; | |
747 | return x; | |
748 | default: | |
749 | return NULL; | |
750 | } | |
751 | } | |
752 | ||
753 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
754 | { | |
755 | struct grep_pat *p; | |
756 | struct grep_expr *x; | |
757 | ||
758 | p = *list; | |
c922b01f LT |
759 | if (!p) |
760 | return NULL; | |
83b5d2f5 JH |
761 | switch (p->token) { |
762 | case GREP_NOT: | |
763 | if (!p->next) | |
764 | die("--not not followed by pattern expression"); | |
765 | *list = p->next; | |
766 | x = xcalloc(1, sizeof (struct grep_expr)); | |
767 | x->node = GREP_NODE_NOT; | |
768 | x->u.unary = compile_pattern_not(list); | |
769 | if (!x->u.unary) | |
770 | die("--not followed by non pattern expression"); | |
771 | return x; | |
772 | default: | |
773 | return compile_pattern_atom(list); | |
774 | } | |
775 | } | |
776 | ||
777 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
778 | { | |
779 | struct grep_pat *p; | |
780 | struct grep_expr *x, *y, *z; | |
781 | ||
782 | x = compile_pattern_not(list); | |
783 | p = *list; | |
784 | if (p && p->token == GREP_AND) { | |
785 | if (!p->next) | |
786 | die("--and not followed by pattern expression"); | |
787 | *list = p->next; | |
788 | y = compile_pattern_and(list); | |
789 | if (!y) | |
790 | die("--and not followed by pattern expression"); | |
791 | z = xcalloc(1, sizeof (struct grep_expr)); | |
792 | z->node = GREP_NODE_AND; | |
793 | z->u.binary.left = x; | |
794 | z->u.binary.right = y; | |
795 | return z; | |
796 | } | |
797 | return x; | |
798 | } | |
799 | ||
800 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
801 | { | |
802 | struct grep_pat *p; | |
803 | struct grep_expr *x, *y, *z; | |
804 | ||
805 | x = compile_pattern_and(list); | |
806 | p = *list; | |
807 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
808 | y = compile_pattern_or(list); | |
809 | if (!y) | |
810 | die("not a pattern expression %s", p->pattern); | |
811 | z = xcalloc(1, sizeof (struct grep_expr)); | |
812 | z->node = GREP_NODE_OR; | |
813 | z->u.binary.left = x; | |
814 | z->u.binary.right = y; | |
815 | return z; | |
816 | } | |
817 | return x; | |
818 | } | |
819 | ||
820 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
821 | { | |
822 | return compile_pattern_or(list); | |
823 | } | |
824 | ||
17bf35a3 JH |
825 | static void indent(int in) |
826 | { | |
827 | while (in-- > 0) | |
828 | fputc(' ', stderr); | |
829 | } | |
830 | ||
831 | static void dump_grep_pat(struct grep_pat *p) | |
832 | { | |
833 | switch (p->token) { | |
834 | case GREP_AND: fprintf(stderr, "*and*"); break; | |
835 | case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; | |
836 | case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; | |
837 | case GREP_NOT: fprintf(stderr, "*not*"); break; | |
838 | case GREP_OR: fprintf(stderr, "*or*"); break; | |
839 | ||
840 | case GREP_PATTERN: fprintf(stderr, "pattern"); break; | |
841 | case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; | |
842 | case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; | |
843 | } | |
844 | ||
845 | switch (p->token) { | |
846 | default: break; | |
847 | case GREP_PATTERN_HEAD: | |
848 | fprintf(stderr, "<head %d>", p->field); break; | |
849 | case GREP_PATTERN_BODY: | |
850 | fprintf(stderr, "<body>"); break; | |
851 | } | |
852 | switch (p->token) { | |
853 | default: break; | |
854 | case GREP_PATTERN_HEAD: | |
855 | case GREP_PATTERN_BODY: | |
856 | case GREP_PATTERN: | |
857 | fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); | |
858 | break; | |
859 | } | |
860 | fputc('\n', stderr); | |
861 | } | |
862 | ||
863 | static void dump_grep_expression_1(struct grep_expr *x, int in) | |
864 | { | |
865 | indent(in); | |
866 | switch (x->node) { | |
867 | case GREP_NODE_TRUE: | |
868 | fprintf(stderr, "true\n"); | |
869 | break; | |
870 | case GREP_NODE_ATOM: | |
871 | dump_grep_pat(x->u.atom); | |
872 | break; | |
873 | case GREP_NODE_NOT: | |
874 | fprintf(stderr, "(not\n"); | |
875 | dump_grep_expression_1(x->u.unary, in+1); | |
876 | indent(in); | |
877 | fprintf(stderr, ")\n"); | |
878 | break; | |
879 | case GREP_NODE_AND: | |
880 | fprintf(stderr, "(and\n"); | |
881 | dump_grep_expression_1(x->u.binary.left, in+1); | |
882 | dump_grep_expression_1(x->u.binary.right, in+1); | |
883 | indent(in); | |
884 | fprintf(stderr, ")\n"); | |
885 | break; | |
886 | case GREP_NODE_OR: | |
887 | fprintf(stderr, "(or\n"); | |
888 | dump_grep_expression_1(x->u.binary.left, in+1); | |
889 | dump_grep_expression_1(x->u.binary.right, in+1); | |
890 | indent(in); | |
891 | fprintf(stderr, ")\n"); | |
892 | break; | |
893 | } | |
894 | } | |
895 | ||
07a7d656 | 896 | static void dump_grep_expression(struct grep_opt *opt) |
17bf35a3 JH |
897 | { |
898 | struct grep_expr *x = opt->pattern_expression; | |
899 | ||
900 | if (opt->all_match) | |
901 | fprintf(stderr, "[all-match]\n"); | |
902 | dump_grep_expression_1(x, 0); | |
903 | fflush(NULL); | |
904 | } | |
905 | ||
5aaeb733 JH |
906 | static struct grep_expr *grep_true_expr(void) |
907 | { | |
908 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
909 | z->node = GREP_NODE_TRUE; | |
910 | return z; | |
911 | } | |
912 | ||
913 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) | |
914 | { | |
915 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
916 | z->node = GREP_NODE_OR; | |
917 | z->u.binary.left = left; | |
918 | z->u.binary.right = right; | |
919 | return z; | |
920 | } | |
921 | ||
95ce9ce2 | 922 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
923 | { |
924 | struct grep_pat *p; | |
95ce9ce2 | 925 | struct grep_expr *header_expr; |
5aaeb733 JH |
926 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
927 | enum grep_header_field fld; | |
83b5d2f5 | 928 | |
95ce9ce2 JH |
929 | if (!opt->header_list) |
930 | return NULL; | |
2385f246 | 931 | |
95ce9ce2 JH |
932 | for (p = opt->header_list; p; p = p->next) { |
933 | if (p->token != GREP_PATTERN_HEAD) | |
033abf97 | 934 | BUG("a non-header pattern in grep header list."); |
3ce3ffb8 AP |
935 | if (p->field < GREP_HEADER_FIELD_MIN || |
936 | GREP_HEADER_FIELD_MAX <= p->field) | |
033abf97 | 937 | BUG("unknown header field %d", p->field); |
95ce9ce2 | 938 | compile_regexp(p, opt); |
80235ba7 | 939 | } |
5aaeb733 JH |
940 | |
941 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
942 | header_group[fld] = NULL; | |
943 | ||
944 | for (p = opt->header_list; p; p = p->next) { | |
945 | struct grep_expr *h; | |
946 | struct grep_pat *pp = p; | |
947 | ||
948 | h = compile_pattern_atom(&pp); | |
949 | if (!h || pp != p->next) | |
033abf97 | 950 | BUG("malformed header expr"); |
5aaeb733 JH |
951 | if (!header_group[p->field]) { |
952 | header_group[p->field] = h; | |
953 | continue; | |
954 | } | |
955 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
956 | } | |
957 | ||
958 | header_expr = NULL; | |
959 | ||
960 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
961 | if (!header_group[fld]) | |
962 | continue; | |
963 | if (!header_expr) | |
964 | header_expr = grep_true_expr(); | |
965 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
966 | } | |
95ce9ce2 JH |
967 | return header_expr; |
968 | } | |
969 | ||
13e4fc7e JH |
970 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
971 | { | |
972 | struct grep_expr *z = x; | |
973 | ||
974 | while (x) { | |
975 | assert(x->node == GREP_NODE_OR); | |
976 | if (x->u.binary.right && | |
977 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
978 | x->u.binary.right = y; | |
979 | break; | |
980 | } | |
981 | x = x->u.binary.right; | |
982 | } | |
983 | return z; | |
984 | } | |
985 | ||
17bf35a3 | 986 | static void compile_grep_patterns_real(struct grep_opt *opt) |
95ce9ce2 JH |
987 | { |
988 | struct grep_pat *p; | |
989 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 990 | |
83b5d2f5 | 991 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
992 | switch (p->token) { |
993 | case GREP_PATTERN: /* atom */ | |
994 | case GREP_PATTERN_HEAD: | |
995 | case GREP_PATTERN_BODY: | |
c822255c | 996 | compile_regexp(p, opt); |
480c1ca6 JH |
997 | break; |
998 | default: | |
83b5d2f5 | 999 | opt->extended = 1; |
480c1ca6 JH |
1000 | break; |
1001 | } | |
83b5d2f5 JH |
1002 | } |
1003 | ||
80235ba7 JH |
1004 | if (opt->all_match || header_expr) |
1005 | opt->extended = 1; | |
17bf35a3 | 1006 | else if (!opt->extended && !opt->debug) |
83b5d2f5 JH |
1007 | return; |
1008 | ||
83b5d2f5 | 1009 | p = opt->pattern_list; |
ba150a3f MB |
1010 | if (p) |
1011 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
1012 | if (p) |
1013 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 JH |
1014 | |
1015 | if (!header_expr) | |
1016 | return; | |
1017 | ||
5aaeb733 | 1018 | if (!opt->pattern_expression) |
80235ba7 | 1019 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
1020 | else if (opt->all_match) |
1021 | opt->pattern_expression = grep_splice_or(header_expr, | |
1022 | opt->pattern_expression); | |
5aaeb733 JH |
1023 | else |
1024 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
1025 | header_expr); | |
80235ba7 | 1026 | opt->all_match = 1; |
83b5d2f5 JH |
1027 | } |
1028 | ||
17bf35a3 JH |
1029 | void compile_grep_patterns(struct grep_opt *opt) |
1030 | { | |
1031 | compile_grep_patterns_real(opt); | |
1032 | if (opt->debug) | |
1033 | dump_grep_expression(opt); | |
1034 | } | |
1035 | ||
b48fb5b6 JH |
1036 | static void free_pattern_expr(struct grep_expr *x) |
1037 | { | |
1038 | switch (x->node) { | |
5aaeb733 | 1039 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
1040 | case GREP_NODE_ATOM: |
1041 | break; | |
1042 | case GREP_NODE_NOT: | |
1043 | free_pattern_expr(x->u.unary); | |
1044 | break; | |
1045 | case GREP_NODE_AND: | |
1046 | case GREP_NODE_OR: | |
1047 | free_pattern_expr(x->u.binary.left); | |
1048 | free_pattern_expr(x->u.binary.right); | |
1049 | break; | |
1050 | } | |
1051 | free(x); | |
1052 | } | |
1053 | ||
1054 | void free_grep_patterns(struct grep_opt *opt) | |
1055 | { | |
1056 | struct grep_pat *p, *n; | |
1057 | ||
1058 | for (p = opt->pattern_list; p; p = n) { | |
1059 | n = p->next; | |
1060 | switch (p->token) { | |
1061 | case GREP_PATTERN: /* atom */ | |
1062 | case GREP_PATTERN_HEAD: | |
1063 | case GREP_PATTERN_BODY: | |
9eceddee FK |
1064 | if (p->kws) |
1065 | kwsfree(p->kws); | |
6d4b5747 ÆAB |
1066 | else if (p->pcre1_regexp) |
1067 | free_pcre1_regexp(p); | |
94da9193 ÆAB |
1068 | else if (p->pcre2_pattern) |
1069 | free_pcre2_pattern(p); | |
63e7e9d8 MK |
1070 | else |
1071 | regfree(&p->regexp); | |
526a858a | 1072 | free(p->pattern); |
b48fb5b6 JH |
1073 | break; |
1074 | default: | |
1075 | break; | |
1076 | } | |
1077 | free(p); | |
1078 | } | |
1079 | ||
1080 | if (!opt->extended) | |
1081 | return; | |
1082 | free_pattern_expr(opt->pattern_expression); | |
1083 | } | |
1084 | ||
83b5d2f5 JH |
1085 | static char *end_of_line(char *cp, unsigned long *left) |
1086 | { | |
1087 | unsigned long l = *left; | |
1088 | while (l && *cp != '\n') { | |
1089 | l--; | |
1090 | cp++; | |
1091 | } | |
1092 | *left = l; | |
1093 | return cp; | |
1094 | } | |
1095 | ||
1096 | static int word_char(char ch) | |
1097 | { | |
1098 | return isalnum(ch) || ch == '_'; | |
1099 | } | |
1100 | ||
55f638bd ML |
1101 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
1102 | const char *color) | |
1103 | { | |
daa0c3d9 | 1104 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
1105 | opt->output(opt, color, strlen(color)); |
1106 | opt->output(opt, data, size); | |
1107 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
1108 | } else | |
1109 | opt->output(opt, data, size); | |
1110 | } | |
1111 | ||
1112 | static void output_sep(struct grep_opt *opt, char sign) | |
1113 | { | |
1114 | if (opt->null_following_name) | |
1115 | opt->output(opt, "\0", 1); | |
1116 | else | |
fa151dc5 | 1117 | output_color(opt, &sign, 1, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
1118 | } |
1119 | ||
83caecca RZ |
1120 | static void show_name(struct grep_opt *opt, const char *name) |
1121 | { | |
fa151dc5 | 1122 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1123 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
1124 | } |
1125 | ||
ed40a095 RS |
1126 | static int fixmatch(struct grep_pat *p, char *line, char *eol, |
1127 | regmatch_t *match) | |
83b5d2f5 | 1128 | { |
9eceddee FK |
1129 | struct kwsmatch kwsm; |
1130 | size_t offset = kwsexec(p->kws, line, eol - line, &kwsm); | |
1131 | if (offset == -1) { | |
83b5d2f5 JH |
1132 | match->rm_so = match->rm_eo = -1; |
1133 | return REG_NOMATCH; | |
9eceddee FK |
1134 | } else { |
1135 | match->rm_so = offset; | |
1136 | match->rm_eo = match->rm_so + kwsm.size[0]; | |
83b5d2f5 JH |
1137 | return 0; |
1138 | } | |
1139 | } | |
1140 | ||
97e77784 MK |
1141 | static int patmatch(struct grep_pat *p, char *line, char *eol, |
1142 | regmatch_t *match, int eflags) | |
1143 | { | |
1144 | int hit; | |
1145 | ||
1146 | if (p->fixed) | |
1147 | hit = !fixmatch(p, line, eol, match); | |
6d4b5747 ÆAB |
1148 | else if (p->pcre1_regexp) |
1149 | hit = !pcre1match(p, line, eol, match, eflags); | |
94da9193 ÆAB |
1150 | else if (p->pcre2_pattern) |
1151 | hit = !pcre2match(p, line, eol, match, eflags); | |
97e77784 | 1152 | else |
b7d36ffc JS |
1153 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
1154 | eflags); | |
97e77784 MK |
1155 | |
1156 | return hit; | |
1157 | } | |
1158 | ||
a4d7d2c6 JH |
1159 | static int strip_timestamp(char *bol, char **eol_p) |
1160 | { | |
1161 | char *eol = *eol_p; | |
1162 | int ch; | |
1163 | ||
1164 | while (bol < --eol) { | |
1165 | if (*eol != '>') | |
1166 | continue; | |
1167 | *eol_p = ++eol; | |
1168 | ch = *eol; | |
1169 | *eol = '\0'; | |
1170 | return ch; | |
1171 | } | |
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | static struct { | |
1176 | const char *field; | |
1177 | size_t len; | |
1178 | } header_field[] = { | |
1179 | { "author ", 7 }, | |
1180 | { "committer ", 10 }, | |
72fd13f7 | 1181 | { "reflog ", 7 }, |
a4d7d2c6 JH |
1182 | }; |
1183 | ||
d7eb527d | 1184 | static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, |
79212772 RS |
1185 | enum grep_context ctx, |
1186 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
1187 | { |
1188 | int hit = 0; | |
a4d7d2c6 | 1189 | int saved_ch = 0; |
e701fadb | 1190 | const char *start = bol; |
83b5d2f5 | 1191 | |
480c1ca6 JH |
1192 | if ((p->token != GREP_PATTERN) && |
1193 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
1194 | return 0; | |
1195 | ||
a4d7d2c6 JH |
1196 | if (p->token == GREP_PATTERN_HEAD) { |
1197 | const char *field; | |
1198 | size_t len; | |
1199 | assert(p->field < ARRAY_SIZE(header_field)); | |
1200 | field = header_field[p->field].field; | |
1201 | len = header_field[p->field].len; | |
1202 | if (strncmp(bol, field, len)) | |
1203 | return 0; | |
1204 | bol += len; | |
ad4813b3 NTND |
1205 | switch (p->field) { |
1206 | case GREP_HEADER_AUTHOR: | |
1207 | case GREP_HEADER_COMMITTER: | |
1208 | saved_ch = strip_timestamp(bol, &eol); | |
1209 | break; | |
1210 | default: | |
1211 | break; | |
1212 | } | |
a4d7d2c6 JH |
1213 | } |
1214 | ||
83b5d2f5 | 1215 | again: |
97e77784 | 1216 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 1217 | |
d7eb527d | 1218 | if (hit && p->word_regexp) { |
83b5d2f5 | 1219 | if ((pmatch[0].rm_so < 0) || |
84201eae | 1220 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
1221 | (pmatch[0].rm_eo < 0) || |
1222 | (eol - bol) < pmatch[0].rm_eo) | |
1223 | die("regexp returned nonsense"); | |
1224 | ||
1225 | /* Match beginning must be either beginning of the | |
1226 | * line, or at word boundary (i.e. the last char must | |
1227 | * not be a word char). Similarly, match end must be | |
1228 | * either end of the line, or at word boundary | |
1229 | * (i.e. the next char must not be a word char). | |
1230 | */ | |
fb62eb7f | 1231 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
1232 | !word_char(bol[pmatch[0].rm_so-1])) && |
1233 | ((pmatch[0].rm_eo == (eol-bol)) || | |
1234 | !word_char(bol[pmatch[0].rm_eo])) ) | |
1235 | ; | |
1236 | else | |
1237 | hit = 0; | |
1238 | ||
84201eae RS |
1239 | /* Words consist of at least one character. */ |
1240 | if (pmatch->rm_so == pmatch->rm_eo) | |
1241 | hit = 0; | |
1242 | ||
83b5d2f5 JH |
1243 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
1244 | /* There could be more than one match on the | |
1245 | * line, and the first match might not be | |
1246 | * strict word match. But later ones could be! | |
fb62eb7f RS |
1247 | * Forward to the next possible start, i.e. the |
1248 | * next position following a non-word char. | |
83b5d2f5 JH |
1249 | */ |
1250 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
1251 | while (word_char(bol[-1]) && bol < eol) |
1252 | bol++; | |
dbb6a4ad | 1253 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
1254 | if (bol < eol) |
1255 | goto again; | |
83b5d2f5 JH |
1256 | } |
1257 | } | |
a4d7d2c6 JH |
1258 | if (p->token == GREP_PATTERN_HEAD && saved_ch) |
1259 | *eol = saved_ch; | |
e701fadb RS |
1260 | if (hit) { |
1261 | pmatch[0].rm_so += bol - start; | |
1262 | pmatch[0].rm_eo += bol - start; | |
1263 | } | |
83b5d2f5 JH |
1264 | return hit; |
1265 | } | |
1266 | ||
68d686e6 TB |
1267 | static int match_expr_eval(struct grep_opt *opt, struct grep_expr *x, char *bol, |
1268 | char *eol, enum grep_context ctx, ssize_t *col, | |
1269 | ssize_t *icol, int collect_hits) | |
83b5d2f5 | 1270 | { |
0ab7befa JH |
1271 | int h = 0; |
1272 | ||
c922b01f LT |
1273 | if (!x) |
1274 | die("Not a valid grep expression"); | |
83b5d2f5 | 1275 | switch (x->node) { |
5aaeb733 JH |
1276 | case GREP_NODE_TRUE: |
1277 | h = 1; | |
1278 | break; | |
83b5d2f5 | 1279 | case GREP_NODE_ATOM: |
68d686e6 TB |
1280 | { |
1281 | regmatch_t tmp; | |
1282 | h = match_one_pattern(x->u.atom, bol, eol, ctx, | |
1283 | &tmp, 0); | |
1284 | if (h && (*col < 0 || tmp.rm_so < *col)) | |
1285 | *col = tmp.rm_so; | |
1286 | } | |
83b5d2f5 JH |
1287 | break; |
1288 | case GREP_NODE_NOT: | |
68d686e6 TB |
1289 | /* |
1290 | * Upon visiting a GREP_NODE_NOT, col and icol become swapped. | |
1291 | */ | |
1292 | h = !match_expr_eval(opt, x->u.unary, bol, eol, ctx, icol, col, | |
1293 | 0); | |
0ab7befa | 1294 | break; |
83b5d2f5 | 1295 | case GREP_NODE_AND: |
017c0fcf | 1296 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
68d686e6 | 1297 | icol, 0); |
017c0fcf TB |
1298 | if (h || opt->columnnum) { |
1299 | /* | |
1300 | * Don't short-circuit AND when given --column, since a | |
1301 | * NOT earlier in the tree may turn this into an OR. In | |
1302 | * this case, see the below comment. | |
1303 | */ | |
1304 | h &= match_expr_eval(opt, x->u.binary.right, bol, eol, | |
1305 | ctx, col, icol, 0); | |
1306 | } | |
0ab7befa | 1307 | break; |
83b5d2f5 | 1308 | case GREP_NODE_OR: |
017c0fcf TB |
1309 | if (!(collect_hits || opt->columnnum)) { |
1310 | /* | |
1311 | * Don't short-circuit OR when given --column (or | |
1312 | * collecting hits) to ensure we don't skip a later | |
1313 | * child that would produce an earlier match. | |
1314 | */ | |
68d686e6 TB |
1315 | return (match_expr_eval(opt, x->u.binary.left, bol, eol, |
1316 | ctx, col, icol, 0) || | |
1317 | match_expr_eval(opt, x->u.binary.right, bol, | |
1318 | eol, ctx, col, icol, 0)); | |
017c0fcf | 1319 | } |
68d686e6 TB |
1320 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
1321 | icol, 0); | |
017c0fcf TB |
1322 | if (collect_hits) |
1323 | x->u.binary.left->hit |= h; | |
68d686e6 | 1324 | h |= match_expr_eval(opt, x->u.binary.right, bol, eol, ctx, col, |
017c0fcf | 1325 | icol, collect_hits); |
0ab7befa JH |
1326 | break; |
1327 | default: | |
d7530708 | 1328 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1329 | } |
0ab7befa JH |
1330 | if (collect_hits) |
1331 | x->hit |= h; | |
1332 | return h; | |
83b5d2f5 JH |
1333 | } |
1334 | ||
480c1ca6 | 1335 | static int match_expr(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 TB |
1336 | enum grep_context ctx, ssize_t *col, |
1337 | ssize_t *icol, int collect_hits) | |
83b5d2f5 JH |
1338 | { |
1339 | struct grep_expr *x = opt->pattern_expression; | |
68d686e6 | 1340 | return match_expr_eval(opt, x, bol, eol, ctx, col, icol, collect_hits); |
83b5d2f5 JH |
1341 | } |
1342 | ||
480c1ca6 | 1343 | static int match_line(struct grep_opt *opt, char *bol, char *eol, |
68d686e6 | 1344 | ssize_t *col, ssize_t *icol, |
0ab7befa | 1345 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1346 | { |
1347 | struct grep_pat *p; | |
017c0fcf | 1348 | int hit = 0; |
79212772 | 1349 | |
83b5d2f5 | 1350 | if (opt->extended) |
68d686e6 TB |
1351 | return match_expr(opt, bol, eol, ctx, col, icol, |
1352 | collect_hits); | |
0ab7befa JH |
1353 | |
1354 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1355 | for (p = opt->pattern_list; p; p = p->next) { |
68d686e6 TB |
1356 | regmatch_t tmp; |
1357 | if (match_one_pattern(p, bol, eol, ctx, &tmp, 0)) { | |
017c0fcf TB |
1358 | hit |= 1; |
1359 | if (!opt->columnnum) { | |
1360 | /* | |
1361 | * Without --column, any single match on a line | |
1362 | * is enough to know that it needs to be | |
1363 | * printed. With --column, scan _all_ patterns | |
1364 | * to find the earliest. | |
1365 | */ | |
1366 | break; | |
1367 | } | |
1368 | if (*col < 0 || tmp.rm_so < *col) | |
1369 | *col = tmp.rm_so; | |
68d686e6 | 1370 | } |
83b5d2f5 | 1371 | } |
017c0fcf | 1372 | return hit; |
83b5d2f5 JH |
1373 | } |
1374 | ||
7e8f59d5 RS |
1375 | static int match_next_pattern(struct grep_pat *p, char *bol, char *eol, |
1376 | enum grep_context ctx, | |
1377 | regmatch_t *pmatch, int eflags) | |
1378 | { | |
1379 | regmatch_t match; | |
1380 | ||
1381 | if (!match_one_pattern(p, bol, eol, ctx, &match, eflags)) | |
1382 | return 0; | |
1383 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1384 | return 0; | |
1385 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1386 | if (match.rm_so > pmatch->rm_so) | |
1387 | return 1; | |
1388 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1389 | return 1; | |
1390 | } | |
1391 | pmatch->rm_so = match.rm_so; | |
1392 | pmatch->rm_eo = match.rm_eo; | |
1393 | return 1; | |
1394 | } | |
1395 | ||
1396 | static int next_match(struct grep_opt *opt, char *bol, char *eol, | |
1397 | enum grep_context ctx, regmatch_t *pmatch, int eflags) | |
1398 | { | |
1399 | struct grep_pat *p; | |
1400 | int hit = 0; | |
1401 | ||
1402 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1403 | if (bol < eol) { | |
1404 | for (p = opt->pattern_list; p; p = p->next) { | |
1405 | switch (p->token) { | |
1406 | case GREP_PATTERN: /* atom */ | |
1407 | case GREP_PATTERN_HEAD: | |
1408 | case GREP_PATTERN_BODY: | |
1409 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1410 | pmatch, eflags); | |
1411 | break; | |
1412 | default: | |
1413 | break; | |
1414 | } | |
1415 | } | |
1416 | } | |
1417 | return hit; | |
1418 | } | |
1419 | ||
c707ded3 TB |
1420 | static void show_line_header(struct grep_opt *opt, const char *name, |
1421 | unsigned lno, ssize_t cno, char sign) | |
7e8f59d5 | 1422 | { |
1d84f72e | 1423 | if (opt->heading && opt->last_shown == 0) { |
fa151dc5 | 1424 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
1d84f72e RS |
1425 | opt->output(opt, "\n", 1); |
1426 | } | |
5dd06d38 RS |
1427 | opt->last_shown = lno; |
1428 | ||
1d84f72e | 1429 | if (!opt->heading && opt->pathname) { |
fa151dc5 | 1430 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
55f638bd | 1431 | output_sep(opt, sign); |
5b594f45 FK |
1432 | } |
1433 | if (opt->linenum) { | |
1434 | char buf[32]; | |
1a168e5c | 1435 | xsnprintf(buf, sizeof(buf), "%d", lno); |
fa151dc5 | 1436 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]); |
55f638bd | 1437 | output_sep(opt, sign); |
5b594f45 | 1438 | } |
89252cd0 TB |
1439 | /* |
1440 | * Treat 'cno' as the 1-indexed offset from the start of a non-context | |
1441 | * line to its first match. Otherwise, 'cno' is 0 indicating that we are | |
1442 | * being called with a context line. | |
1443 | */ | |
1444 | if (opt->columnnum && cno) { | |
1445 | char buf[32]; | |
1446 | xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno); | |
d036d667 | 1447 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]); |
89252cd0 TB |
1448 | output_sep(opt, sign); |
1449 | } | |
c707ded3 TB |
1450 | } |
1451 | ||
1452 | static void show_line(struct grep_opt *opt, char *bol, char *eol, | |
1453 | const char *name, unsigned lno, ssize_t cno, char sign) | |
1454 | { | |
1455 | int rest = eol - bol; | |
9d8db06e TB |
1456 | const char *match_color = NULL; |
1457 | const char *line_color = NULL; | |
c707ded3 TB |
1458 | |
1459 | if (opt->file_break && opt->last_shown == 0) { | |
1460 | if (opt->show_hunk_mark) | |
1461 | opt->output(opt, "\n", 1); | |
1462 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { | |
1463 | if (opt->last_shown == 0) { | |
1464 | if (opt->show_hunk_mark) { | |
87ece7ce | 1465 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1466 | opt->output(opt, "\n", 1); |
1467 | } | |
1468 | } else if (lno > opt->last_shown + 1) { | |
87ece7ce | 1469 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1470 | opt->output(opt, "\n", 1); |
1471 | } | |
1472 | } | |
9d8db06e TB |
1473 | if (!opt->only_matching) { |
1474 | /* | |
1475 | * In case the line we're being called with contains more than | |
1476 | * one match, leave printing each header to the loop below. | |
1477 | */ | |
1478 | show_line_header(opt, name, lno, cno, sign); | |
1479 | } | |
1480 | if (opt->color || opt->only_matching) { | |
7e8f59d5 RS |
1481 | regmatch_t match; |
1482 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
1483 | int ch = *eol; | |
1484 | int eflags = 0; | |
1485 | ||
9d8db06e TB |
1486 | if (opt->color) { |
1487 | if (sign == ':') | |
87ece7ce | 1488 | match_color = opt->colors[GREP_COLOR_MATCH_SELECTED]; |
9d8db06e | 1489 | else |
87ece7ce | 1490 | match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT]; |
9d8db06e | 1491 | if (sign == ':') |
87ece7ce | 1492 | line_color = opt->colors[GREP_COLOR_SELECTED]; |
9d8db06e | 1493 | else if (sign == '-') |
87ece7ce | 1494 | line_color = opt->colors[GREP_COLOR_CONTEXT]; |
9d8db06e | 1495 | else if (sign == '=') |
87ece7ce | 1496 | line_color = opt->colors[GREP_COLOR_FUNCTION]; |
9d8db06e | 1497 | } |
7e8f59d5 RS |
1498 | *eol = '\0'; |
1499 | while (next_match(opt, bol, eol, ctx, &match, eflags)) { | |
1f5b9cc4 RS |
1500 | if (match.rm_so == match.rm_eo) |
1501 | break; | |
5b594f45 | 1502 | |
9d8db06e TB |
1503 | if (opt->only_matching) |
1504 | show_line_header(opt, name, lno, cno, sign); | |
1505 | else | |
1506 | output_color(opt, bol, match.rm_so, line_color); | |
55f638bd | 1507 | output_color(opt, bol + match.rm_so, |
79a77109 | 1508 | match.rm_eo - match.rm_so, match_color); |
9d8db06e TB |
1509 | if (opt->only_matching) |
1510 | opt->output(opt, "\n", 1); | |
7e8f59d5 | 1511 | bol += match.rm_eo; |
9d8db06e | 1512 | cno += match.rm_eo; |
7e8f59d5 RS |
1513 | rest -= match.rm_eo; |
1514 | eflags = REG_NOTBOL; | |
1515 | } | |
1516 | *eol = ch; | |
1517 | } | |
9d8db06e TB |
1518 | if (!opt->only_matching) { |
1519 | output_color(opt, bol, rest, line_color); | |
1520 | opt->output(opt, "\n", 1); | |
1521 | } | |
7e8f59d5 RS |
1522 | } |
1523 | ||
78db6ea9 JK |
1524 | int grep_use_locks; |
1525 | ||
0579f91d TR |
1526 | /* |
1527 | * This lock protects access to the gitattributes machinery, which is | |
1528 | * not thread-safe. | |
1529 | */ | |
1530 | pthread_mutex_t grep_attr_mutex; | |
1531 | ||
78db6ea9 | 1532 | static inline void grep_attr_lock(void) |
0579f91d | 1533 | { |
78db6ea9 | 1534 | if (grep_use_locks) |
0579f91d TR |
1535 | pthread_mutex_lock(&grep_attr_mutex); |
1536 | } | |
1537 | ||
78db6ea9 | 1538 | static inline void grep_attr_unlock(void) |
0579f91d | 1539 | { |
78db6ea9 | 1540 | if (grep_use_locks) |
0579f91d TR |
1541 | pthread_mutex_unlock(&grep_attr_mutex); |
1542 | } | |
b3aeb285 JK |
1543 | |
1544 | /* | |
1545 | * Same as git_attr_mutex, but protecting the thread-unsafe object db access. | |
1546 | */ | |
1547 | pthread_mutex_t grep_read_mutex; | |
1548 | ||
e1327023 | 1549 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, char *bol, char *eol) |
2944e4e6 | 1550 | { |
60ecac98 | 1551 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1552 | if (xecfg && !xecfg->find_func) { |
acd00ea0 | 1553 | grep_source_load_driver(gs, opt->repo->index); |
94ad9d9e JK |
1554 | if (gs->driver->funcname.pattern) { |
1555 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1556 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1557 | } else { | |
1558 | xecfg = opt->priv = NULL; | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | if (xecfg) { | |
60ecac98 RS |
1563 | char buf[1]; |
1564 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1565 | xecfg->find_func_priv) >= 0; | |
1566 | } | |
1567 | ||
2944e4e6 RS |
1568 | if (bol == eol) |
1569 | return 0; | |
1570 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1571 | return 1; | |
1572 | return 0; | |
1573 | } | |
1574 | ||
e1327023 JK |
1575 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1576 | char *bol, unsigned lno) | |
2944e4e6 | 1577 | { |
e1327023 | 1578 | while (bol > gs->buf) { |
2944e4e6 RS |
1579 | char *eol = --bol; |
1580 | ||
e1327023 | 1581 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1582 | bol--; |
1583 | lno--; | |
1584 | ||
1585 | if (lno <= opt->last_shown) | |
1586 | break; | |
1587 | ||
e1327023 | 1588 | if (match_funcname(opt, gs, bol, eol)) { |
89252cd0 | 1589 | show_line(opt, bol, eol, gs->name, lno, 0, '='); |
2944e4e6 RS |
1590 | break; |
1591 | } | |
1592 | } | |
1593 | } | |
1594 | ||
a5dc20b0 RS |
1595 | static int is_empty_line(const char *bol, const char *eol); |
1596 | ||
e1327023 | 1597 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
ba8ea749 | 1598 | char *bol, char *end, unsigned lno) |
49de3216 | 1599 | { |
6653a01b | 1600 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1601 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1602 | |
49de3216 RS |
1603 | if (opt->pre_context < lno) |
1604 | from = lno - opt->pre_context; | |
1605 | if (from <= opt->last_shown) | |
1606 | from = opt->last_shown + 1; | |
6653a01b | 1607 | orig_from = from; |
a5dc20b0 RS |
1608 | if (opt->funcbody) { |
1609 | if (match_funcname(opt, gs, bol, end)) | |
1610 | comment_needed = 1; | |
1611 | else | |
1612 | funcname_needed = 1; | |
6653a01b RS |
1613 | from = opt->last_shown + 1; |
1614 | } | |
49de3216 RS |
1615 | |
1616 | /* Rewind. */ | |
6653a01b | 1617 | while (bol > gs->buf && cur > from) { |
a5dc20b0 | 1618 | char *next_bol = bol; |
2944e4e6 RS |
1619 | char *eol = --bol; |
1620 | ||
e1327023 | 1621 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1622 | bol--; |
1623 | cur--; | |
a5dc20b0 RS |
1624 | if (comment_needed && (is_empty_line(bol, eol) || |
1625 | match_funcname(opt, gs, bol, eol))) { | |
1626 | comment_needed = 0; | |
1627 | from = orig_from; | |
1628 | if (cur < from) { | |
1629 | cur++; | |
1630 | bol = next_bol; | |
1631 | break; | |
1632 | } | |
1633 | } | |
e1327023 | 1634 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1635 | funcname_lno = cur; |
1636 | funcname_needed = 0; | |
a5dc20b0 RS |
1637 | if (opt->funcbody) |
1638 | comment_needed = 1; | |
1639 | else | |
1640 | from = orig_from; | |
2944e4e6 | 1641 | } |
49de3216 RS |
1642 | } |
1643 | ||
2944e4e6 RS |
1644 | /* We need to look even further back to find a function signature. */ |
1645 | if (opt->funcname && funcname_needed) | |
e1327023 | 1646 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1647 | |
49de3216 RS |
1648 | /* Back forward. */ |
1649 | while (cur < lno) { | |
2944e4e6 | 1650 | char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1651 | |
1652 | while (*eol != '\n') | |
1653 | eol++; | |
89252cd0 | 1654 | show_line(opt, bol, eol, gs->name, cur, 0, sign); |
49de3216 RS |
1655 | bol = eol + 1; |
1656 | cur++; | |
1657 | } | |
1658 | } | |
1659 | ||
a26345b6 JH |
1660 | static int should_lookahead(struct grep_opt *opt) |
1661 | { | |
1662 | struct grep_pat *p; | |
1663 | ||
1664 | if (opt->extended) | |
1665 | return 0; /* punt for too complex stuff */ | |
1666 | if (opt->invert) | |
1667 | return 0; | |
1668 | for (p = opt->pattern_list; p; p = p->next) { | |
1669 | if (p->token != GREP_PATTERN) | |
1670 | return 0; /* punt for "header only" and stuff */ | |
1671 | } | |
1672 | return 1; | |
1673 | } | |
1674 | ||
1675 | static int look_ahead(struct grep_opt *opt, | |
1676 | unsigned long *left_p, | |
1677 | unsigned *lno_p, | |
1678 | char **bol_p) | |
1679 | { | |
1680 | unsigned lno = *lno_p; | |
1681 | char *bol = *bol_p; | |
1682 | struct grep_pat *p; | |
1683 | char *sp, *last_bol; | |
1684 | regoff_t earliest = -1; | |
1685 | ||
1686 | for (p = opt->pattern_list; p; p = p->next) { | |
1687 | int hit; | |
1688 | regmatch_t m; | |
1689 | ||
97e77784 | 1690 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1691 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1692 | continue; | |
1693 | if (earliest < 0 || m.rm_so < earliest) | |
1694 | earliest = m.rm_so; | |
1695 | } | |
1696 | ||
1697 | if (earliest < 0) { | |
1698 | *bol_p = bol + *left_p; | |
1699 | *left_p = 0; | |
1700 | return 1; | |
1701 | } | |
1702 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1703 | ; /* find the beginning of the line */ | |
1704 | last_bol = sp; | |
1705 | ||
1706 | for (sp = bol; sp < last_bol; sp++) { | |
1707 | if (*sp == '\n') | |
1708 | lno++; | |
1709 | } | |
1710 | *left_p -= last_bol - bol; | |
1711 | *bol_p = last_bol; | |
1712 | *lno_p = lno; | |
1713 | return 0; | |
1714 | } | |
1715 | ||
38bbc2ea NTND |
1716 | static int fill_textconv_grep(struct repository *r, |
1717 | struct userdiff_driver *driver, | |
335ec3bf JK |
1718 | struct grep_source *gs) |
1719 | { | |
1720 | struct diff_filespec *df; | |
1721 | char *buf; | |
1722 | size_t size; | |
1723 | ||
1724 | if (!driver || !driver->textconv) | |
1725 | return grep_source_load(gs); | |
1726 | ||
1727 | /* | |
1728 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1729 | * have to pretend to be one. If we could unify the grep_source | |
1730 | * and diff_filespec structs, this mess could just go away. | |
1731 | */ | |
1732 | df = alloc_filespec(gs->path); | |
1733 | switch (gs->type) { | |
1c41c82b | 1734 | case GREP_SOURCE_OID: |
335ec3bf JK |
1735 | fill_filespec(df, gs->identifier, 1, 0100644); |
1736 | break; | |
1737 | case GREP_SOURCE_FILE: | |
f9704c2d | 1738 | fill_filespec(df, &null_oid, 0, 0100644); |
335ec3bf JK |
1739 | break; |
1740 | default: | |
033abf97 | 1741 | BUG("attempt to textconv something without a path?"); |
335ec3bf JK |
1742 | } |
1743 | ||
1744 | /* | |
1745 | * fill_textconv is not remotely thread-safe; it may load objects | |
1746 | * behind the scenes, and it modifies the global diff tempfile | |
1747 | * structure. | |
1748 | */ | |
1749 | grep_read_lock(); | |
38bbc2ea | 1750 | size = fill_textconv(r, driver, df, &buf); |
335ec3bf JK |
1751 | grep_read_unlock(); |
1752 | free_filespec(df); | |
1753 | ||
1754 | /* | |
1755 | * The normal fill_textconv usage by the diff machinery would just keep | |
1756 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1757 | * grep code passes around a grep_source and assumes that its "buf" | |
1758 | * pointer is the beginning of the thing we are searching. So let's | |
1759 | * install our textconv'd version into the grep_source, taking care not | |
1760 | * to leak any existing buffer. | |
1761 | */ | |
1762 | grep_source_clear_data(gs); | |
1763 | gs->buf = buf; | |
1764 | gs->size = size; | |
1765 | ||
1766 | return 0; | |
1767 | } | |
1768 | ||
4aa2c475 RS |
1769 | static int is_empty_line(const char *bol, const char *eol) |
1770 | { | |
1771 | while (bol < eol && isspace(*bol)) | |
1772 | bol++; | |
1773 | return bol == eol; | |
1774 | } | |
1775 | ||
e1327023 | 1776 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1777 | { |
e1327023 | 1778 | char *bol; |
4aa2c475 | 1779 | char *peek_bol = NULL; |
e1327023 | 1780 | unsigned long left; |
83b5d2f5 | 1781 | unsigned lno = 1; |
83b5d2f5 | 1782 | unsigned last_hit = 0; |
83b5d2f5 | 1783 | int binary_match_only = 0; |
83b5d2f5 | 1784 | unsigned count = 0; |
a26345b6 | 1785 | int try_lookahead = 0; |
ba8ea749 | 1786 | int show_function = 0; |
335ec3bf | 1787 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1788 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1789 | xdemitconf_t xecfg; |
83b5d2f5 | 1790 | |
de99eb0c ES |
1791 | if (!opt->status_only && gs->name == NULL) |
1792 | BUG("grep call which could print a name requires " | |
1793 | "grep_source.name be non-NULL"); | |
1794 | ||
5b594f45 FK |
1795 | if (!opt->output) |
1796 | opt->output = std_output; | |
1797 | ||
ba8ea749 RS |
1798 | if (opt->pre_context || opt->post_context || opt->file_break || |
1799 | opt->funcbody) { | |
08303c36 RS |
1800 | /* Show hunk marks, except for the first file. */ |
1801 | if (opt->last_shown) | |
1802 | opt->show_hunk_mark = 1; | |
1803 | /* | |
1804 | * If we're using threads then we can't easily identify | |
1805 | * the first file. Always put hunk marks in that case | |
1806 | * and skip the very first one later in work_done(). | |
1807 | */ | |
1808 | if (opt->output != std_output) | |
1809 | opt->show_hunk_mark = 1; | |
1810 | } | |
431d6e7b RS |
1811 | opt->last_shown = 0; |
1812 | ||
335ec3bf | 1813 | if (opt->allow_textconv) { |
acd00ea0 | 1814 | grep_source_load_driver(gs, opt->repo->index); |
335ec3bf JK |
1815 | /* |
1816 | * We might set up the shared textconv cache data here, which | |
1817 | * is not thread-safe. | |
1818 | */ | |
1819 | grep_attr_lock(); | |
bd7ad45b | 1820 | textconv = userdiff_get_textconv(opt->repo, gs->driver); |
335ec3bf JK |
1821 | grep_attr_unlock(); |
1822 | } | |
1823 | ||
1824 | /* | |
1825 | * We know the result of a textconv is text, so we only have to care | |
1826 | * about binary handling if we are not using it. | |
1827 | */ | |
1828 | if (!textconv) { | |
1829 | switch (opt->binary) { | |
1830 | case GREP_BINARY_DEFAULT: | |
acd00ea0 | 1831 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1832 | binary_match_only = 1; |
1833 | break; | |
1834 | case GREP_BINARY_NOMATCH: | |
acd00ea0 | 1835 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1836 | return 0; /* Assume unmatch */ |
1837 | break; | |
1838 | case GREP_BINARY_TEXT: | |
1839 | break; | |
1840 | default: | |
033abf97 | 1841 | BUG("unknown binary handling mode"); |
335ec3bf | 1842 | } |
83b5d2f5 JH |
1843 | } |
1844 | ||
60ecac98 | 1845 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1846 | opt->priv = &xecfg; |
1847 | ||
a26345b6 | 1848 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1849 | |
38bbc2ea | 1850 | if (fill_textconv_grep(opt->repo, textconv, gs) < 0) |
08265798 JK |
1851 | return 0; |
1852 | ||
e1327023 JK |
1853 | bol = gs->buf; |
1854 | left = gs->size; | |
83b5d2f5 JH |
1855 | while (left) { |
1856 | char *eol, ch; | |
0ab7befa | 1857 | int hit; |
89252cd0 | 1858 | ssize_t cno; |
68d686e6 | 1859 | ssize_t col = -1, icol = -1; |
83b5d2f5 | 1860 | |
a26345b6 | 1861 | /* |
8997da38 | 1862 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1863 | * has the next hit; don't call it if we need to do |
1864 | * something more than just skipping the current line | |
1865 | * in response to an unmatch for the current line. E.g. | |
1866 | * inside a post-context window, we will show the current | |
1867 | * line as a context around the previous hit when it | |
1868 | * doesn't hit. | |
1869 | */ | |
1870 | if (try_lookahead | |
1871 | && !(last_hit | |
ba8ea749 RS |
1872 | && (show_function || |
1873 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1874 | && look_ahead(opt, &left, &lno, &bol)) |
1875 | break; | |
83b5d2f5 JH |
1876 | eol = end_of_line(bol, &left); |
1877 | ch = *eol; | |
1878 | *eol = 0; | |
1879 | ||
480c1ca6 JH |
1880 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1881 | ctx = GREP_CONTEXT_BODY; | |
1882 | ||
68d686e6 | 1883 | hit = match_line(opt, bol, eol, &col, &icol, ctx, collect_hits); |
83b5d2f5 JH |
1884 | *eol = ch; |
1885 | ||
0ab7befa JH |
1886 | if (collect_hits) |
1887 | goto next_line; | |
1888 | ||
83b5d2f5 JH |
1889 | /* "grep -v -e foo -e bla" should list lines |
1890 | * that do not have either, so inversion should | |
1891 | * be done outside. | |
1892 | */ | |
1893 | if (opt->invert) | |
1894 | hit = !hit; | |
1895 | if (opt->unmatch_name_only) { | |
1896 | if (hit) | |
1897 | return 0; | |
1898 | goto next_line; | |
1899 | } | |
1900 | if (hit) { | |
1901 | count++; | |
1902 | if (opt->status_only) | |
1903 | return 1; | |
321ffcc0 | 1904 | if (opt->name_only) { |
e1327023 | 1905 | show_name(opt, gs->name); |
321ffcc0 RS |
1906 | return 1; |
1907 | } | |
c30c10cf RS |
1908 | if (opt->count) |
1909 | goto next_line; | |
83b5d2f5 | 1910 | if (binary_match_only) { |
5b594f45 | 1911 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1912 | output_color(opt, gs->name, strlen(gs->name), |
fa151dc5 | 1913 | opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1914 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1915 | return 1; |
1916 | } | |
83b5d2f5 JH |
1917 | /* Hit at this line. If we haven't shown the |
1918 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1919 | */ |
ba8ea749 | 1920 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1921 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1922 | else if (opt->funcname) |
e1327023 | 1923 | show_funcname_line(opt, gs, bol, lno); |
89252cd0 TB |
1924 | cno = opt->invert ? icol : col; |
1925 | if (cno < 0) { | |
1926 | /* | |
1927 | * A negative cno indicates that there was no | |
1928 | * match on the line. We are thus inverted and | |
1929 | * being asked to show all lines that _don't_ | |
1930 | * match a given expression. Therefore, set cno | |
1931 | * to 0 to suggest the whole line matches. | |
1932 | */ | |
1933 | cno = 0; | |
1934 | } | |
1935 | show_line(opt, bol, eol, gs->name, lno, cno + 1, ':'); | |
5dd06d38 | 1936 | last_hit = lno; |
ba8ea749 RS |
1937 | if (opt->funcbody) |
1938 | show_function = 1; | |
1939 | goto next_line; | |
83b5d2f5 | 1940 | } |
4aa2c475 RS |
1941 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1942 | unsigned long peek_left = left; | |
1943 | char *peek_eol = eol; | |
1944 | ||
1945 | /* | |
1946 | * Trailing empty lines are not interesting. | |
1947 | * Peek past them to see if they belong to the | |
1948 | * body of the current function. | |
1949 | */ | |
1950 | peek_bol = bol; | |
1951 | while (is_empty_line(peek_bol, peek_eol)) { | |
1952 | peek_bol = peek_eol + 1; | |
1953 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1954 | } | |
1955 | ||
1956 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1957 | show_function = 0; | |
1958 | } | |
ba8ea749 RS |
1959 | if (show_function || |
1960 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1961 | /* If the last hit is within the post context, |
1962 | * we need to show this line. | |
1963 | */ | |
89252cd0 | 1964 | show_line(opt, bol, eol, gs->name, lno, col + 1, '-'); |
83b5d2f5 | 1965 | } |
83b5d2f5 JH |
1966 | |
1967 | next_line: | |
1968 | bol = eol + 1; | |
1969 | if (!left) | |
1970 | break; | |
1971 | left--; | |
1972 | lno++; | |
1973 | } | |
1974 | ||
0ab7befa JH |
1975 | if (collect_hits) |
1976 | return 0; | |
b48fb5b6 | 1977 | |
83b5d2f5 | 1978 | if (opt->status_only) |
e1f68c66 | 1979 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1980 | if (opt->unmatch_name_only) { |
1981 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1982 | show_name(opt, gs->name); |
83b5d2f5 JH |
1983 | return 1; |
1984 | } | |
1985 | ||
60ecac98 RS |
1986 | xdiff_clear_find_func(&xecfg); |
1987 | opt->priv = NULL; | |
1988 | ||
83b5d2f5 JH |
1989 | /* NEEDSWORK: |
1990 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1991 | * which feels mostly useless but sometimes useful. Maybe | |
1992 | * make it another option? For now suppress them. | |
1993 | */ | |
5b594f45 FK |
1994 | if (opt->count && count) { |
1995 | char buf[32]; | |
f76d947a RS |
1996 | if (opt->pathname) { |
1997 | output_color(opt, gs->name, strlen(gs->name), | |
fa151dc5 | 1998 | opt->colors[GREP_COLOR_FILENAME]); |
f76d947a RS |
1999 | output_sep(opt, ':'); |
2000 | } | |
1a168e5c | 2001 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 2002 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 2003 | return 1; |
5b594f45 | 2004 | } |
83b5d2f5 JH |
2005 | return !!last_hit; |
2006 | } | |
2007 | ||
0ab7befa JH |
2008 | static void clr_hit_marker(struct grep_expr *x) |
2009 | { | |
2010 | /* All-hit markers are meaningful only at the very top level | |
2011 | * OR node. | |
2012 | */ | |
2013 | while (1) { | |
2014 | x->hit = 0; | |
2015 | if (x->node != GREP_NODE_OR) | |
2016 | return; | |
2017 | x->u.binary.left->hit = 0; | |
2018 | x = x->u.binary.right; | |
2019 | } | |
2020 | } | |
2021 | ||
2022 | static int chk_hit_marker(struct grep_expr *x) | |
2023 | { | |
2024 | /* Top level nodes have hit markers. See if they all are hits */ | |
2025 | while (1) { | |
2026 | if (x->node != GREP_NODE_OR) | |
2027 | return x->hit; | |
2028 | if (!x->u.binary.left->hit) | |
2029 | return 0; | |
2030 | x = x->u.binary.right; | |
2031 | } | |
2032 | } | |
2033 | ||
e1327023 | 2034 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
2035 | { |
2036 | /* | |
2037 | * we do not have to do the two-pass grep when we do not check | |
2038 | * buffer-wide "all-match". | |
2039 | */ | |
2040 | if (!opt->all_match) | |
e1327023 | 2041 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
2042 | |
2043 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
2044 | * We first clear hit markers from them. | |
2045 | */ | |
2046 | clr_hit_marker(opt->pattern_expression); | |
e1327023 | 2047 | grep_source_1(opt, gs, 1); |
0ab7befa JH |
2048 | |
2049 | if (!chk_hit_marker(opt->pattern_expression)) | |
2050 | return 0; | |
2051 | ||
e1327023 JK |
2052 | return grep_source_1(opt, gs, 0); |
2053 | } | |
2054 | ||
c876d6da | 2055 | int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) |
e1327023 JK |
2056 | { |
2057 | struct grep_source gs; | |
2058 | int r; | |
2059 | ||
55c61688 | 2060 | grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); |
e1327023 JK |
2061 | gs.buf = buf; |
2062 | gs.size = size; | |
2063 | ||
2064 | r = grep_source(opt, &gs); | |
2065 | ||
2066 | grep_source_clear(&gs); | |
2067 | return r; | |
2068 | } | |
2069 | ||
2070 | void grep_source_init(struct grep_source *gs, enum grep_source_type type, | |
55c61688 NTND |
2071 | const char *name, const char *path, |
2072 | const void *identifier) | |
e1327023 JK |
2073 | { |
2074 | gs->type = type; | |
8c53f071 JK |
2075 | gs->name = xstrdup_or_null(name); |
2076 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
2077 | gs->buf = NULL; |
2078 | gs->size = 0; | |
94ad9d9e | 2079 | gs->driver = NULL; |
e1327023 JK |
2080 | |
2081 | switch (type) { | |
2082 | case GREP_SOURCE_FILE: | |
2083 | gs->identifier = xstrdup(identifier); | |
2084 | break; | |
1c41c82b BW |
2085 | case GREP_SOURCE_OID: |
2086 | gs->identifier = oiddup(identifier); | |
e1327023 JK |
2087 | break; |
2088 | case GREP_SOURCE_BUF: | |
2089 | gs->identifier = NULL; | |
4538eef5 | 2090 | break; |
e1327023 JK |
2091 | } |
2092 | } | |
2093 | ||
2094 | void grep_source_clear(struct grep_source *gs) | |
2095 | { | |
88ce3ef6 ÆAB |
2096 | FREE_AND_NULL(gs->name); |
2097 | FREE_AND_NULL(gs->path); | |
2098 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
2099 | grep_source_clear_data(gs); |
2100 | } | |
2101 | ||
2102 | void grep_source_clear_data(struct grep_source *gs) | |
2103 | { | |
2104 | switch (gs->type) { | |
2105 | case GREP_SOURCE_FILE: | |
1c41c82b | 2106 | case GREP_SOURCE_OID: |
6a83d902 | 2107 | FREE_AND_NULL(gs->buf); |
e1327023 JK |
2108 | gs->size = 0; |
2109 | break; | |
2110 | case GREP_SOURCE_BUF: | |
2111 | /* leave user-provided buf intact */ | |
2112 | break; | |
2113 | } | |
2114 | } | |
2115 | ||
1c41c82b | 2116 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
2117 | { |
2118 | enum object_type type; | |
2119 | ||
2120 | grep_read_lock(); | |
b4f5aca4 | 2121 | gs->buf = read_object_file(gs->identifier, &type, &gs->size); |
e1327023 JK |
2122 | grep_read_unlock(); |
2123 | ||
2124 | if (!gs->buf) | |
2125 | return error(_("'%s': unable to read %s"), | |
2126 | gs->name, | |
1c41c82b | 2127 | oid_to_hex(gs->identifier)); |
e1327023 JK |
2128 | return 0; |
2129 | } | |
2130 | ||
2131 | static int grep_source_load_file(struct grep_source *gs) | |
2132 | { | |
2133 | const char *filename = gs->identifier; | |
2134 | struct stat st; | |
2135 | char *data; | |
2136 | size_t size; | |
2137 | int i; | |
2138 | ||
2139 | if (lstat(filename, &st) < 0) { | |
2140 | err_ret: | |
2141 | if (errno != ENOENT) | |
7645d8f1 | 2142 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
2143 | return -1; |
2144 | } | |
2145 | if (!S_ISREG(st.st_mode)) | |
2146 | return -1; | |
2147 | size = xsize_t(st.st_size); | |
2148 | i = open(filename, O_RDONLY); | |
2149 | if (i < 0) | |
2150 | goto err_ret; | |
3733e694 | 2151 | data = xmallocz(size); |
e1327023 | 2152 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 2153 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
2154 | close(i); |
2155 | free(data); | |
2156 | return -1; | |
2157 | } | |
2158 | close(i); | |
e1327023 JK |
2159 | |
2160 | gs->buf = data; | |
2161 | gs->size = size; | |
2162 | return 0; | |
2163 | } | |
2164 | ||
3083301e | 2165 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
2166 | { |
2167 | if (gs->buf) | |
2168 | return 0; | |
2169 | ||
2170 | switch (gs->type) { | |
2171 | case GREP_SOURCE_FILE: | |
2172 | return grep_source_load_file(gs); | |
1c41c82b BW |
2173 | case GREP_SOURCE_OID: |
2174 | return grep_source_load_oid(gs); | |
e1327023 JK |
2175 | case GREP_SOURCE_BUF: |
2176 | return gs->buf ? 0 : -1; | |
2177 | } | |
033abf97 | 2178 | BUG("invalid grep_source type to load"); |
0ab7befa | 2179 | } |
94ad9d9e | 2180 | |
acd00ea0 NTND |
2181 | void grep_source_load_driver(struct grep_source *gs, |
2182 | struct index_state *istate) | |
94ad9d9e JK |
2183 | { |
2184 | if (gs->driver) | |
2185 | return; | |
2186 | ||
2187 | grep_attr_lock(); | |
55c61688 | 2188 | if (gs->path) |
acd00ea0 | 2189 | gs->driver = userdiff_find_by_path(istate, gs->path); |
94ad9d9e JK |
2190 | if (!gs->driver) |
2191 | gs->driver = userdiff_find_by_name("default"); | |
2192 | grep_attr_unlock(); | |
2193 | } | |
41b59bfc | 2194 | |
acd00ea0 NTND |
2195 | static int grep_source_is_binary(struct grep_source *gs, |
2196 | struct index_state *istate) | |
41b59bfc | 2197 | { |
acd00ea0 | 2198 | grep_source_load_driver(gs, istate); |
41b59bfc JK |
2199 | if (gs->driver->binary != -1) |
2200 | return gs->driver->binary; | |
2201 | ||
2202 | if (!grep_source_load(gs)) | |
2203 | return buffer_is_binary(gs->buf, gs->size); | |
2204 | ||
2205 | return 0; | |
2206 | } |