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Commit | Line | Data |
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83b5d2f5 | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
83b5d2f5 | 3 | #include "grep.h" |
cbd53a21 | 4 | #include "object-store.h" |
60ecac98 | 5 | #include "userdiff.h" |
6bfce93e | 6 | #include "xdiff-interface.h" |
335ec3bf JK |
7 | #include "diff.h" |
8 | #include "diffcore.h" | |
5c1ebcca | 9 | #include "commit.h" |
793dc676 | 10 | #include "quote.h" |
3ac68a93 | 11 | #include "help.h" |
83b5d2f5 | 12 | |
07a7d656 | 13 | static int grep_source_load(struct grep_source *gs); |
acd00ea0 NTND |
14 | static int grep_source_is_binary(struct grep_source *gs, |
15 | struct index_state *istate); | |
07a7d656 | 16 | |
96313423 MÅ |
17 | static void std_output(struct grep_opt *opt, const void *buf, size_t size) |
18 | { | |
19 | fwrite(buf, size, 1, stdout); | |
20 | } | |
21 | ||
fa151dc5 NTND |
22 | static const char *color_grep_slots[] = { |
23 | [GREP_COLOR_CONTEXT] = "context", | |
24 | [GREP_COLOR_FILENAME] = "filename", | |
25 | [GREP_COLOR_FUNCTION] = "function", | |
26 | [GREP_COLOR_LINENO] = "lineNumber", | |
d036d667 | 27 | [GREP_COLOR_COLUMNNO] = "column", |
fa151dc5 NTND |
28 | [GREP_COLOR_MATCH_CONTEXT] = "matchContext", |
29 | [GREP_COLOR_MATCH_SELECTED] = "matchSelected", | |
30 | [GREP_COLOR_SELECTED] = "selected", | |
31 | [GREP_COLOR_SEP] = "separator", | |
32 | }; | |
33 | ||
7687a054 JH |
34 | static int parse_pattern_type_arg(const char *opt, const char *arg) |
35 | { | |
36 | if (!strcmp(arg, "default")) | |
37 | return GREP_PATTERN_TYPE_UNSPECIFIED; | |
38 | else if (!strcmp(arg, "basic")) | |
39 | return GREP_PATTERN_TYPE_BRE; | |
40 | else if (!strcmp(arg, "extended")) | |
41 | return GREP_PATTERN_TYPE_ERE; | |
42 | else if (!strcmp(arg, "fixed")) | |
43 | return GREP_PATTERN_TYPE_FIXED; | |
44 | else if (!strcmp(arg, "perl")) | |
45 | return GREP_PATTERN_TYPE_PCRE; | |
46 | die("bad %s argument: %s", opt, arg); | |
47 | } | |
48 | ||
3ac68a93 NTND |
49 | define_list_config_array_extra(color_grep_slots, {"match"}); |
50 | ||
7687a054 JH |
51 | /* |
52 | * Read the configuration file once and store it in | |
53 | * the grep_defaults template. | |
54 | */ | |
55 | int grep_config(const char *var, const char *value, void *cb) | |
56 | { | |
72365bb4 | 57 | struct grep_opt *opt = cb; |
fa151dc5 | 58 | const char *slot; |
7687a054 JH |
59 | |
60 | if (userdiff_config(var, value) < 0) | |
61 | return -1; | |
62 | ||
63 | if (!strcmp(var, "grep.extendedregexp")) { | |
c7e38551 | 64 | opt->extended_regexp_option = git_config_bool(var, value); |
7687a054 JH |
65 | return 0; |
66 | } | |
67 | ||
68 | if (!strcmp(var, "grep.patterntype")) { | |
69 | opt->pattern_type_option = parse_pattern_type_arg(var, value); | |
70 | return 0; | |
71 | } | |
72 | ||
73 | if (!strcmp(var, "grep.linenumber")) { | |
74 | opt->linenum = git_config_bool(var, value); | |
75 | return 0; | |
76 | } | |
6653fec3 TB |
77 | if (!strcmp(var, "grep.column")) { |
78 | opt->columnnum = git_config_bool(var, value); | |
79 | return 0; | |
80 | } | |
7687a054 | 81 | |
6453f7b3 AS |
82 | if (!strcmp(var, "grep.fullname")) { |
83 | opt->relative = !git_config_bool(var, value); | |
84 | return 0; | |
85 | } | |
86 | ||
7687a054 JH |
87 | if (!strcmp(var, "color.grep")) |
88 | opt->color = git_config_colorbool(var, value); | |
fa151dc5 NTND |
89 | if (!strcmp(var, "color.grep.match")) { |
90 | if (grep_config("color.grep.matchcontext", value, cb) < 0) | |
91 | return -1; | |
92 | if (grep_config("color.grep.matchselected", value, cb) < 0) | |
93 | return -1; | |
94 | } else if (skip_prefix(var, "color.grep.", &slot)) { | |
95 | int i = LOOKUP_CONFIG(color_grep_slots, slot); | |
96 | char *color; | |
97 | ||
98 | if (i < 0) | |
99 | return -1; | |
100 | color = opt->colors[i]; | |
7687a054 JH |
101 | if (!value) |
102 | return config_error_nonbool(var); | |
f6c5a296 | 103 | return color_parse(value, color); |
7687a054 JH |
104 | } |
105 | return 0; | |
106 | } | |
107 | ||
9725c8dd | 108 | void grep_init(struct grep_opt *opt, struct repository *repo) |
7687a054 | 109 | { |
72365bb4 ÆAB |
110 | struct grep_opt blank = GREP_OPT_INIT; |
111 | memcpy(opt, &blank, sizeof(*opt)); | |
6ba9bb76 | 112 | |
38bbc2ea | 113 | opt->repo = repo; |
7687a054 JH |
114 | opt->pattern_tail = &opt->pattern_list; |
115 | opt->header_tail = &opt->header_list; | |
7687a054 | 116 | } |
07a7d656 | 117 | |
fc456751 RS |
118 | static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, |
119 | const char *origin, int no, | |
120 | enum grep_pat_token t, | |
121 | enum grep_header_field field) | |
a4d7d2c6 JH |
122 | { |
123 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
526a858a | 124 | p->pattern = xmemdupz(pat, patlen); |
fc456751 RS |
125 | p->patternlen = patlen; |
126 | p->origin = origin; | |
127 | p->no = no; | |
128 | p->token = t; | |
a4d7d2c6 | 129 | p->field = field; |
fc456751 RS |
130 | return p; |
131 | } | |
132 | ||
2b3873ff RS |
133 | static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p) |
134 | { | |
135 | **tail = p; | |
136 | *tail = &p->next; | |
a4d7d2c6 | 137 | p->next = NULL; |
526a858a RS |
138 | |
139 | switch (p->token) { | |
140 | case GREP_PATTERN: /* atom */ | |
141 | case GREP_PATTERN_HEAD: | |
142 | case GREP_PATTERN_BODY: | |
143 | for (;;) { | |
144 | struct grep_pat *new_pat; | |
145 | size_t len = 0; | |
146 | char *cp = p->pattern + p->patternlen, *nl = NULL; | |
147 | while (++len <= p->patternlen) { | |
148 | if (*(--cp) == '\n') { | |
149 | nl = cp; | |
150 | break; | |
151 | } | |
152 | } | |
153 | if (!nl) | |
154 | break; | |
155 | new_pat = create_grep_pat(nl + 1, len - 1, p->origin, | |
156 | p->no, p->token, p->field); | |
157 | new_pat->next = p->next; | |
158 | if (!p->next) | |
159 | *tail = &new_pat->next; | |
160 | p->next = new_pat; | |
161 | *nl = '\0'; | |
162 | p->patternlen -= len; | |
163 | } | |
164 | break; | |
165 | default: | |
166 | break; | |
167 | } | |
2b3873ff RS |
168 | } |
169 | ||
fc456751 RS |
170 | void append_header_grep_pattern(struct grep_opt *opt, |
171 | enum grep_header_field field, const char *pat) | |
172 | { | |
173 | struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, | |
174 | GREP_PATTERN_HEAD, field); | |
baa6378f JH |
175 | if (field == GREP_HEADER_REFLOG) |
176 | opt->use_reflog_filter = 1; | |
2b3873ff | 177 | do_append_grep_pat(&opt->header_tail, p); |
a4d7d2c6 JH |
178 | } |
179 | ||
83b5d2f5 JH |
180 | void append_grep_pattern(struct grep_opt *opt, const char *pat, |
181 | const char *origin, int no, enum grep_pat_token t) | |
ed40a095 RS |
182 | { |
183 | append_grep_pat(opt, pat, strlen(pat), origin, no, t); | |
184 | } | |
185 | ||
186 | void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, | |
187 | const char *origin, int no, enum grep_pat_token t) | |
83b5d2f5 | 188 | { |
fc456751 | 189 | struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0); |
2b3873ff | 190 | do_append_grep_pat(&opt->pattern_tail, p); |
83b5d2f5 JH |
191 | } |
192 | ||
5b594f45 FK |
193 | struct grep_opt *grep_opt_dup(const struct grep_opt *opt) |
194 | { | |
195 | struct grep_pat *pat; | |
196 | struct grep_opt *ret = xmalloc(sizeof(struct grep_opt)); | |
197 | *ret = *opt; | |
198 | ||
199 | ret->pattern_list = NULL; | |
200 | ret->pattern_tail = &ret->pattern_list; | |
201 | ||
202 | for(pat = opt->pattern_list; pat != NULL; pat = pat->next) | |
203 | { | |
204 | if(pat->token == GREP_PATTERN_HEAD) | |
205 | append_header_grep_pattern(ret, pat->field, | |
206 | pat->pattern); | |
207 | else | |
ed40a095 RS |
208 | append_grep_pat(ret, pat->pattern, pat->patternlen, |
209 | pat->origin, pat->no, pat->token); | |
5b594f45 FK |
210 | } |
211 | ||
212 | return ret; | |
213 | } | |
214 | ||
a30c148a MK |
215 | static NORETURN void compile_regexp_failed(const struct grep_pat *p, |
216 | const char *error) | |
217 | { | |
218 | char where[1024]; | |
219 | ||
220 | if (p->no) | |
19bdd3e7 | 221 | xsnprintf(where, sizeof(where), "In '%s' at %d, ", p->origin, p->no); |
a30c148a | 222 | else if (p->origin) |
19bdd3e7 | 223 | xsnprintf(where, sizeof(where), "%s, ", p->origin); |
a30c148a MK |
224 | else |
225 | where[0] = 0; | |
226 | ||
227 | die("%s'%s': %s", where, p->pattern, error); | |
228 | } | |
229 | ||
543f1c0c ÆAB |
230 | static int is_fixed(const char *s, size_t len) |
231 | { | |
232 | size_t i; | |
233 | ||
234 | for (i = 0; i < len; i++) { | |
235 | if (is_regex_special(s[i])) | |
236 | return 0; | |
237 | } | |
238 | ||
239 | return 1; | |
240 | } | |
241 | ||
94da9193 | 242 | #ifdef USE_LIBPCRE2 |
c1760352 ÆAB |
243 | #define GREP_PCRE2_DEBUG_MALLOC 0 |
244 | ||
245 | static void *pcre2_malloc(PCRE2_SIZE size, MAYBE_UNUSED void *memory_data) | |
246 | { | |
247 | void *pointer = malloc(size); | |
248 | #if GREP_PCRE2_DEBUG_MALLOC | |
249 | static int count = 1; | |
250 | fprintf(stderr, "PCRE2:%p -> #%02d: alloc(%lu)\n", pointer, count++, size); | |
251 | #endif | |
252 | return pointer; | |
253 | } | |
254 | ||
255 | static void pcre2_free(void *pointer, MAYBE_UNUSED void *memory_data) | |
256 | { | |
257 | #if GREP_PCRE2_DEBUG_MALLOC | |
258 | static int count = 1; | |
259 | if (pointer) | |
260 | fprintf(stderr, "PCRE2:%p -> #%02d: free()\n", pointer, count++); | |
261 | #endif | |
262 | free(pointer); | |
263 | } | |
264 | ||
94da9193 ÆAB |
265 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) |
266 | { | |
267 | int error; | |
268 | PCRE2_UCHAR errbuf[256]; | |
269 | PCRE2_SIZE erroffset; | |
270 | int options = PCRE2_MULTILINE; | |
94da9193 | 271 | int jitret; |
a25b9085 ÆAB |
272 | int patinforet; |
273 | size_t jitsizearg; | |
32e3e8bc | 274 | int literal = !opt->ignore_case && (p->fixed || p->is_fixed); |
94da9193 | 275 | |
cbe81e65 ÆAB |
276 | /* |
277 | * Call pcre2_general_context_create() before calling any | |
278 | * other pcre2_*(). It sets up our malloc()/free() functions | |
279 | * with which everything else is allocated. | |
280 | */ | |
281 | p->pcre2_general_context = pcre2_general_context_create( | |
282 | pcre2_malloc, pcre2_free, NULL); | |
283 | if (!p->pcre2_general_context) | |
284 | die("Couldn't allocate PCRE2 general context"); | |
94da9193 ÆAB |
285 | |
286 | if (opt->ignore_case) { | |
44570188 | 287 | if (!opt->ignore_locale && has_non_ascii(p->pattern)) { |
cbe81e65 ÆAB |
288 | p->pcre2_tables = pcre2_maketables(p->pcre2_general_context); |
289 | p->pcre2_compile_context = pcre2_compile_context_create(p->pcre2_general_context); | |
10da030a CMAB |
290 | pcre2_set_character_tables(p->pcre2_compile_context, |
291 | p->pcre2_tables); | |
94da9193 ÆAB |
292 | } |
293 | options |= PCRE2_CASELESS; | |
294 | } | |
32e3e8bc | 295 | if (!opt->ignore_locale && is_utf8_locale() && !literal) |
95ca1f98 ÆAB |
296 | options |= (PCRE2_UTF | PCRE2_MATCH_INVALID_UTF); |
297 | ||
97169fc3 | 298 | #ifndef GIT_PCRE2_VERSION_10_36_OR_HIGHER |
95ca1f98 | 299 | /* Work around https://bugs.exim.org/show_bug.cgi?id=2642 fixed in 10.36 */ |
797c3599 ÆAB |
300 | if (PCRE2_MATCH_INVALID_UTF && options & (PCRE2_UTF | PCRE2_CASELESS)) |
301 | options |= PCRE2_NO_START_OPTIMIZE; | |
302 | #endif | |
94da9193 ÆAB |
303 | |
304 | p->pcre2_pattern = pcre2_compile((PCRE2_SPTR)p->pattern, | |
305 | p->patternlen, options, &error, &erroffset, | |
306 | p->pcre2_compile_context); | |
307 | ||
308 | if (p->pcre2_pattern) { | |
cbe81e65 | 309 | p->pcre2_match_data = pcre2_match_data_create_from_pattern(p->pcre2_pattern, p->pcre2_general_context); |
94da9193 ÆAB |
310 | if (!p->pcre2_match_data) |
311 | die("Couldn't allocate PCRE2 match data"); | |
312 | } else { | |
313 | pcre2_get_error_message(error, errbuf, sizeof(errbuf)); | |
314 | compile_regexp_failed(p, (const char *)&errbuf); | |
315 | } | |
316 | ||
317 | pcre2_config(PCRE2_CONFIG_JIT, &p->pcre2_jit_on); | |
04bef50c | 318 | if (p->pcre2_jit_on) { |
94da9193 ÆAB |
319 | jitret = pcre2_jit_compile(p->pcre2_pattern, PCRE2_JIT_COMPLETE); |
320 | if (jitret) | |
321 | die("Couldn't JIT the PCRE2 pattern '%s', got '%d'\n", p->pattern, jitret); | |
a25b9085 ÆAB |
322 | |
323 | /* | |
324 | * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just | |
325 | * tells us whether the library itself supports JIT, | |
326 | * but to see whether we're going to be actually using | |
327 | * JIT we need to extract PCRE2_INFO_JITSIZE from the | |
328 | * pattern *after* we do pcre2_jit_compile() above. | |
329 | * | |
330 | * This is because if the pattern contains the | |
331 | * (*NO_JIT) verb (see pcre2syntax(3)) | |
332 | * pcre2_jit_compile() will exit early with 0. If we | |
333 | * then proceed to call pcre2_jit_match() further down | |
334 | * the line instead of pcre2_match() we'll either | |
335 | * segfault (pre PCRE 10.31) or run into a fatal error | |
336 | * (post PCRE2 10.31) | |
337 | */ | |
338 | patinforet = pcre2_pattern_info(p->pcre2_pattern, PCRE2_INFO_JITSIZE, &jitsizearg); | |
339 | if (patinforet) | |
340 | BUG("pcre2_pattern_info() failed: %d", patinforet); | |
341 | if (jitsizearg == 0) { | |
342 | p->pcre2_jit_on = 0; | |
343 | return; | |
344 | } | |
94da9193 ÆAB |
345 | } |
346 | } | |
347 | ||
348 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
349 | regmatch_t *match, int eflags) | |
350 | { | |
351 | int ret, flags = 0; | |
352 | PCRE2_SIZE *ovector; | |
353 | PCRE2_UCHAR errbuf[256]; | |
354 | ||
355 | if (eflags & REG_NOTBOL) | |
356 | flags |= PCRE2_NOTBOL; | |
357 | ||
358 | if (p->pcre2_jit_on) | |
359 | ret = pcre2_jit_match(p->pcre2_pattern, (unsigned char *)line, | |
360 | eol - line, 0, flags, p->pcre2_match_data, | |
361 | NULL); | |
362 | else | |
363 | ret = pcre2_match(p->pcre2_pattern, (unsigned char *)line, | |
364 | eol - line, 0, flags, p->pcre2_match_data, | |
365 | NULL); | |
366 | ||
367 | if (ret < 0 && ret != PCRE2_ERROR_NOMATCH) { | |
368 | pcre2_get_error_message(ret, errbuf, sizeof(errbuf)); | |
369 | die("%s failed with error code %d: %s", | |
370 | (p->pcre2_jit_on ? "pcre2_jit_match" : "pcre2_match"), ret, | |
371 | errbuf); | |
372 | } | |
373 | if (ret > 0) { | |
374 | ovector = pcre2_get_ovector_pointer(p->pcre2_match_data); | |
375 | ret = 0; | |
376 | match->rm_so = (int)ovector[0]; | |
377 | match->rm_eo = (int)ovector[1]; | |
378 | } | |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
383 | static void free_pcre2_pattern(struct grep_pat *p) | |
384 | { | |
385 | pcre2_compile_context_free(p->pcre2_compile_context); | |
386 | pcre2_code_free(p->pcre2_pattern); | |
387 | pcre2_match_data_free(p->pcre2_match_data); | |
b76bf27f | 388 | #ifdef GIT_PCRE2_VERSION_10_34_OR_HIGHER |
cbe81e65 | 389 | pcre2_maketables_free(p->pcre2_general_context, p->pcre2_tables); |
b76bf27f | 390 | #else |
10da030a | 391 | free((void *)p->pcre2_tables); |
b76bf27f | 392 | #endif |
cbe81e65 | 393 | pcre2_general_context_free(p->pcre2_general_context); |
94da9193 ÆAB |
394 | } |
395 | #else /* !USE_LIBPCRE2 */ | |
396 | static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) | |
397 | { | |
94da9193 ÆAB |
398 | die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE"); |
399 | } | |
400 | ||
401 | static int pcre2match(struct grep_pat *p, const char *line, const char *eol, | |
402 | regmatch_t *match, int eflags) | |
403 | { | |
404 | return 1; | |
405 | } | |
406 | ||
407 | static void free_pcre2_pattern(struct grep_pat *p) | |
408 | { | |
409 | } | |
94da9193 | 410 | |
793dc676 NTND |
411 | static void compile_fixed_regexp(struct grep_pat *p, struct grep_opt *opt) |
412 | { | |
413 | struct strbuf sb = STRBUF_INIT; | |
414 | int err; | |
1ceababc | 415 | int regflags = 0; |
793dc676 NTND |
416 | |
417 | basic_regex_quote_buf(&sb, p->pattern); | |
793dc676 NTND |
418 | if (opt->ignore_case) |
419 | regflags |= REG_ICASE; | |
420 | err = regcomp(&p->regexp, sb.buf, regflags); | |
793dc676 NTND |
421 | strbuf_release(&sb); |
422 | if (err) { | |
423 | char errbuf[1024]; | |
424 | regerror(err, &p->regexp, errbuf, sizeof(errbuf)); | |
793dc676 NTND |
425 | compile_regexp_failed(p, errbuf); |
426 | } | |
427 | } | |
b65abcaf | 428 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 429 | |
83b5d2f5 JH |
430 | static void compile_regexp(struct grep_pat *p, struct grep_opt *opt) |
431 | { | |
c822255c | 432 | int err; |
07a3d411 | 433 | int regflags = REG_NEWLINE; |
c822255c | 434 | |
04bf052e ÆAB |
435 | if (opt->pattern_type_option == GREP_PATTERN_TYPE_UNSPECIFIED) |
436 | opt->pattern_type_option = (opt->extended_regexp_option | |
437 | ? GREP_PATTERN_TYPE_ERE | |
438 | : GREP_PATTERN_TYPE_BRE); | |
439 | ||
d7eb527d | 440 | p->word_regexp = opt->word_regexp; |
5183bf67 | 441 | p->ignore_case = opt->ignore_case; |
04bf052e | 442 | p->fixed = opt->pattern_type_option == GREP_PATTERN_TYPE_FIXED; |
d7eb527d | 443 | |
04bf052e | 444 | if (opt->pattern_type_option != GREP_PATTERN_TYPE_PCRE && |
ae807d77 | 445 | memchr(p->pattern, 0, p->patternlen)) |
45d1f37c ÆAB |
446 | die(_("given pattern contains NULL byte (via -f <file>). This is only supported with -P under PCRE v2")); |
447 | ||
09872f64 | 448 | p->is_fixed = is_fixed(p->pattern, p->patternlen); |
8a599983 ÆAB |
449 | #ifdef USE_LIBPCRE2 |
450 | if (!p->fixed && !p->is_fixed) { | |
451 | const char *no_jit = "(*NO_JIT)"; | |
452 | const int no_jit_len = strlen(no_jit); | |
453 | if (starts_with(p->pattern, no_jit) && | |
454 | is_fixed(p->pattern + no_jit_len, | |
455 | p->patternlen - no_jit_len)) | |
456 | p->is_fixed = 1; | |
457 | } | |
458 | #endif | |
09872f64 | 459 | if (p->fixed || p->is_fixed) { |
b65abcaf | 460 | #ifdef USE_LIBPCRE2 |
09872f64 | 461 | if (p->is_fixed) { |
b65abcaf ÆAB |
462 | compile_pcre2_pattern(p, opt); |
463 | } else { | |
464 | /* | |
465 | * E.g. t7811-grep-open.sh relies on the | |
466 | * pattern being restored. | |
467 | */ | |
468 | char *old_pattern = p->pattern; | |
469 | size_t old_patternlen = p->patternlen; | |
470 | struct strbuf sb = STRBUF_INIT; | |
471 | ||
472 | /* | |
473 | * There is the PCRE2_LITERAL flag, but it's | |
474 | * only in PCRE v2 10.30 and later. Needing to | |
475 | * ifdef our way around that and dealing with | |
476 | * it + PCRE2_MULTILINE being an error is more | |
477 | * complex than just quoting this ourselves. | |
478 | */ | |
479 | strbuf_add(&sb, "\\Q", 2); | |
480 | strbuf_add(&sb, p->pattern, p->patternlen); | |
481 | strbuf_add(&sb, "\\E", 2); | |
482 | ||
483 | p->pattern = sb.buf; | |
484 | p->patternlen = sb.len; | |
485 | compile_pcre2_pattern(p, opt); | |
486 | p->pattern = old_pattern; | |
487 | p->patternlen = old_patternlen; | |
488 | strbuf_release(&sb); | |
489 | } | |
490 | #else /* !USE_LIBPCRE2 */ | |
793dc676 | 491 | compile_fixed_regexp(p, opt); |
b65abcaf | 492 | #endif /* !USE_LIBPCRE2 */ |
793dc676 | 493 | return; |
9eceddee | 494 | } |
c822255c | 495 | |
04bf052e | 496 | if (opt->pattern_type_option == GREP_PATTERN_TYPE_PCRE) { |
94da9193 ÆAB |
497 | compile_pcre2_pattern(p, opt); |
498 | return; | |
499 | } | |
500 | ||
07a3d411 ÆAB |
501 | if (p->ignore_case) |
502 | regflags |= REG_ICASE; | |
04bf052e | 503 | if (opt->pattern_type_option == GREP_PATTERN_TYPE_ERE) |
07a3d411 ÆAB |
504 | regflags |= REG_EXTENDED; |
505 | err = regcomp(&p->regexp, p->pattern, regflags); | |
83b5d2f5 JH |
506 | if (err) { |
507 | char errbuf[1024]; | |
83b5d2f5 | 508 | regerror(err, &p->regexp, errbuf, 1024); |
a30c148a | 509 | compile_regexp_failed(p, errbuf); |
83b5d2f5 JH |
510 | } |
511 | } | |
512 | ||
e2b15427 RS |
513 | static struct grep_expr *grep_not_expr(struct grep_expr *expr) |
514 | { | |
515 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
516 | z->node = GREP_NODE_NOT; | |
517 | z->u.unary = expr; | |
518 | return z; | |
519 | } | |
520 | ||
f2d27598 TB |
521 | static struct grep_expr *grep_binexp(enum grep_expr_node kind, |
522 | struct grep_expr *left, | |
523 | struct grep_expr *right) | |
9dbf00ba RS |
524 | { |
525 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
f2d27598 | 526 | z->node = kind; |
9dbf00ba RS |
527 | z->u.binary.left = left; |
528 | z->u.binary.right = right; | |
529 | return z; | |
530 | } | |
531 | ||
f2d27598 TB |
532 | static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) |
533 | { | |
534 | return grep_binexp(GREP_NODE_OR, left, right); | |
535 | } | |
536 | ||
0a6adc26 TB |
537 | static struct grep_expr *grep_and_expr(struct grep_expr *left, struct grep_expr *right) |
538 | { | |
539 | return grep_binexp(GREP_NODE_AND, left, right); | |
540 | } | |
541 | ||
0ab7befa | 542 | static struct grep_expr *compile_pattern_or(struct grep_pat **); |
83b5d2f5 JH |
543 | static struct grep_expr *compile_pattern_atom(struct grep_pat **list) |
544 | { | |
545 | struct grep_pat *p; | |
546 | struct grep_expr *x; | |
547 | ||
548 | p = *list; | |
c922b01f LT |
549 | if (!p) |
550 | return NULL; | |
83b5d2f5 JH |
551 | switch (p->token) { |
552 | case GREP_PATTERN: /* atom */ | |
480c1ca6 JH |
553 | case GREP_PATTERN_HEAD: |
554 | case GREP_PATTERN_BODY: | |
ca56dadb | 555 | CALLOC_ARRAY(x, 1); |
83b5d2f5 JH |
556 | x->node = GREP_NODE_ATOM; |
557 | x->u.atom = p; | |
558 | *list = p->next; | |
559 | return x; | |
560 | case GREP_OPEN_PAREN: | |
561 | *list = p->next; | |
0ab7befa | 562 | x = compile_pattern_or(list); |
83b5d2f5 JH |
563 | if (!*list || (*list)->token != GREP_CLOSE_PAREN) |
564 | die("unmatched parenthesis"); | |
565 | *list = (*list)->next; | |
566 | return x; | |
567 | default: | |
568 | return NULL; | |
569 | } | |
570 | } | |
571 | ||
572 | static struct grep_expr *compile_pattern_not(struct grep_pat **list) | |
573 | { | |
574 | struct grep_pat *p; | |
575 | struct grep_expr *x; | |
576 | ||
577 | p = *list; | |
c922b01f LT |
578 | if (!p) |
579 | return NULL; | |
83b5d2f5 JH |
580 | switch (p->token) { |
581 | case GREP_NOT: | |
582 | if (!p->next) | |
583 | die("--not not followed by pattern expression"); | |
584 | *list = p->next; | |
e2b15427 RS |
585 | x = compile_pattern_not(list); |
586 | if (!x) | |
83b5d2f5 | 587 | die("--not followed by non pattern expression"); |
e2b15427 | 588 | return grep_not_expr(x); |
83b5d2f5 JH |
589 | default: |
590 | return compile_pattern_atom(list); | |
591 | } | |
592 | } | |
593 | ||
594 | static struct grep_expr *compile_pattern_and(struct grep_pat **list) | |
595 | { | |
596 | struct grep_pat *p; | |
0a6adc26 | 597 | struct grep_expr *x, *y; |
83b5d2f5 JH |
598 | |
599 | x = compile_pattern_not(list); | |
600 | p = *list; | |
601 | if (p && p->token == GREP_AND) { | |
fe7fe62d RS |
602 | if (!x) |
603 | die("--and not preceded by pattern expression"); | |
83b5d2f5 JH |
604 | if (!p->next) |
605 | die("--and not followed by pattern expression"); | |
606 | *list = p->next; | |
607 | y = compile_pattern_and(list); | |
608 | if (!y) | |
609 | die("--and not followed by pattern expression"); | |
0a6adc26 | 610 | return grep_and_expr(x, y); |
83b5d2f5 JH |
611 | } |
612 | return x; | |
613 | } | |
614 | ||
615 | static struct grep_expr *compile_pattern_or(struct grep_pat **list) | |
616 | { | |
617 | struct grep_pat *p; | |
9dbf00ba | 618 | struct grep_expr *x, *y; |
83b5d2f5 JH |
619 | |
620 | x = compile_pattern_and(list); | |
621 | p = *list; | |
622 | if (x && p && p->token != GREP_CLOSE_PAREN) { | |
623 | y = compile_pattern_or(list); | |
624 | if (!y) | |
625 | die("not a pattern expression %s", p->pattern); | |
9dbf00ba | 626 | return grep_or_expr(x, y); |
83b5d2f5 JH |
627 | } |
628 | return x; | |
629 | } | |
630 | ||
631 | static struct grep_expr *compile_pattern_expr(struct grep_pat **list) | |
632 | { | |
633 | return compile_pattern_or(list); | |
634 | } | |
635 | ||
5aaeb733 JH |
636 | static struct grep_expr *grep_true_expr(void) |
637 | { | |
638 | struct grep_expr *z = xcalloc(1, sizeof(*z)); | |
639 | z->node = GREP_NODE_TRUE; | |
640 | return z; | |
641 | } | |
642 | ||
95ce9ce2 | 643 | static struct grep_expr *prep_header_patterns(struct grep_opt *opt) |
83b5d2f5 JH |
644 | { |
645 | struct grep_pat *p; | |
95ce9ce2 | 646 | struct grep_expr *header_expr; |
5aaeb733 JH |
647 | struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); |
648 | enum grep_header_field fld; | |
83b5d2f5 | 649 | |
95ce9ce2 JH |
650 | if (!opt->header_list) |
651 | return NULL; | |
2385f246 | 652 | |
95ce9ce2 JH |
653 | for (p = opt->header_list; p; p = p->next) { |
654 | if (p->token != GREP_PATTERN_HEAD) | |
033abf97 | 655 | BUG("a non-header pattern in grep header list."); |
3ce3ffb8 AP |
656 | if (p->field < GREP_HEADER_FIELD_MIN || |
657 | GREP_HEADER_FIELD_MAX <= p->field) | |
033abf97 | 658 | BUG("unknown header field %d", p->field); |
95ce9ce2 | 659 | compile_regexp(p, opt); |
80235ba7 | 660 | } |
5aaeb733 JH |
661 | |
662 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) | |
663 | header_group[fld] = NULL; | |
664 | ||
665 | for (p = opt->header_list; p; p = p->next) { | |
666 | struct grep_expr *h; | |
667 | struct grep_pat *pp = p; | |
668 | ||
669 | h = compile_pattern_atom(&pp); | |
670 | if (!h || pp != p->next) | |
033abf97 | 671 | BUG("malformed header expr"); |
5aaeb733 JH |
672 | if (!header_group[p->field]) { |
673 | header_group[p->field] = h; | |
674 | continue; | |
675 | } | |
676 | header_group[p->field] = grep_or_expr(h, header_group[p->field]); | |
677 | } | |
678 | ||
679 | header_expr = NULL; | |
680 | ||
681 | for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { | |
682 | if (!header_group[fld]) | |
683 | continue; | |
684 | if (!header_expr) | |
685 | header_expr = grep_true_expr(); | |
686 | header_expr = grep_or_expr(header_group[fld], header_expr); | |
687 | } | |
95ce9ce2 JH |
688 | return header_expr; |
689 | } | |
690 | ||
13e4fc7e JH |
691 | static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) |
692 | { | |
693 | struct grep_expr *z = x; | |
694 | ||
695 | while (x) { | |
696 | assert(x->node == GREP_NODE_OR); | |
697 | if (x->u.binary.right && | |
698 | x->u.binary.right->node == GREP_NODE_TRUE) { | |
699 | x->u.binary.right = y; | |
700 | break; | |
701 | } | |
702 | x = x->u.binary.right; | |
703 | } | |
704 | return z; | |
705 | } | |
706 | ||
15c96497 | 707 | void compile_grep_patterns(struct grep_opt *opt) |
95ce9ce2 JH |
708 | { |
709 | struct grep_pat *p; | |
710 | struct grep_expr *header_expr = prep_header_patterns(opt); | |
0ab7befa | 711 | |
83b5d2f5 | 712 | for (p = opt->pattern_list; p; p = p->next) { |
480c1ca6 JH |
713 | switch (p->token) { |
714 | case GREP_PATTERN: /* atom */ | |
715 | case GREP_PATTERN_HEAD: | |
716 | case GREP_PATTERN_BODY: | |
c822255c | 717 | compile_regexp(p, opt); |
480c1ca6 JH |
718 | break; |
719 | default: | |
83b5d2f5 | 720 | opt->extended = 1; |
480c1ca6 JH |
721 | break; |
722 | } | |
83b5d2f5 JH |
723 | } |
724 | ||
794c0002 | 725 | if (opt->all_match || opt->no_body_match || header_expr) |
80235ba7 | 726 | opt->extended = 1; |
15c96497 | 727 | else if (!opt->extended) |
83b5d2f5 JH |
728 | return; |
729 | ||
83b5d2f5 | 730 | p = opt->pattern_list; |
ba150a3f MB |
731 | if (p) |
732 | opt->pattern_expression = compile_pattern_expr(&p); | |
83b5d2f5 JH |
733 | if (p) |
734 | die("incomplete pattern expression: %s", p->pattern); | |
80235ba7 | 735 | |
794c0002 RS |
736 | if (opt->no_body_match && opt->pattern_expression) |
737 | opt->pattern_expression = grep_not_expr(opt->pattern_expression); | |
738 | ||
80235ba7 JH |
739 | if (!header_expr) |
740 | return; | |
741 | ||
5aaeb733 | 742 | if (!opt->pattern_expression) |
80235ba7 | 743 | opt->pattern_expression = header_expr; |
13e4fc7e JH |
744 | else if (opt->all_match) |
745 | opt->pattern_expression = grep_splice_or(header_expr, | |
746 | opt->pattern_expression); | |
5aaeb733 JH |
747 | else |
748 | opt->pattern_expression = grep_or_expr(opt->pattern_expression, | |
749 | header_expr); | |
80235ba7 | 750 | opt->all_match = 1; |
83b5d2f5 JH |
751 | } |
752 | ||
b48fb5b6 JH |
753 | static void free_pattern_expr(struct grep_expr *x) |
754 | { | |
755 | switch (x->node) { | |
5aaeb733 | 756 | case GREP_NODE_TRUE: |
b48fb5b6 JH |
757 | case GREP_NODE_ATOM: |
758 | break; | |
759 | case GREP_NODE_NOT: | |
760 | free_pattern_expr(x->u.unary); | |
761 | break; | |
762 | case GREP_NODE_AND: | |
763 | case GREP_NODE_OR: | |
764 | free_pattern_expr(x->u.binary.left); | |
765 | free_pattern_expr(x->u.binary.right); | |
766 | break; | |
767 | } | |
768 | free(x); | |
769 | } | |
770 | ||
771 | void free_grep_patterns(struct grep_opt *opt) | |
772 | { | |
773 | struct grep_pat *p, *n; | |
774 | ||
775 | for (p = opt->pattern_list; p; p = n) { | |
776 | n = p->next; | |
777 | switch (p->token) { | |
778 | case GREP_PATTERN: /* atom */ | |
779 | case GREP_PATTERN_HEAD: | |
780 | case GREP_PATTERN_BODY: | |
7599730b | 781 | if (p->pcre2_pattern) |
94da9193 | 782 | free_pcre2_pattern(p); |
63e7e9d8 MK |
783 | else |
784 | regfree(&p->regexp); | |
526a858a | 785 | free(p->pattern); |
b48fb5b6 JH |
786 | break; |
787 | default: | |
788 | break; | |
789 | } | |
790 | free(p); | |
791 | } | |
792 | ||
793 | if (!opt->extended) | |
794 | return; | |
795 | free_pattern_expr(opt->pattern_expression); | |
796 | } | |
797 | ||
1a845fbc | 798 | static const char *end_of_line(const char *cp, unsigned long *left) |
83b5d2f5 JH |
799 | { |
800 | unsigned long l = *left; | |
801 | while (l && *cp != '\n') { | |
802 | l--; | |
803 | cp++; | |
804 | } | |
805 | *left = l; | |
806 | return cp; | |
807 | } | |
808 | ||
809 | static int word_char(char ch) | |
810 | { | |
811 | return isalnum(ch) || ch == '_'; | |
812 | } | |
813 | ||
55f638bd ML |
814 | static void output_color(struct grep_opt *opt, const void *data, size_t size, |
815 | const char *color) | |
816 | { | |
daa0c3d9 | 817 | if (want_color(opt->color) && color && color[0]) { |
55f638bd ML |
818 | opt->output(opt, color, strlen(color)); |
819 | opt->output(opt, data, size); | |
820 | opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET)); | |
821 | } else | |
822 | opt->output(opt, data, size); | |
823 | } | |
824 | ||
825 | static void output_sep(struct grep_opt *opt, char sign) | |
826 | { | |
827 | if (opt->null_following_name) | |
828 | opt->output(opt, "\0", 1); | |
829 | else | |
fa151dc5 | 830 | output_color(opt, &sign, 1, opt->colors[GREP_COLOR_SEP]); |
55f638bd ML |
831 | } |
832 | ||
83caecca RZ |
833 | static void show_name(struct grep_opt *opt, const char *name) |
834 | { | |
fa151dc5 | 835 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 836 | opt->output(opt, opt->null_following_name ? "\0" : "\n", 1); |
83caecca RZ |
837 | } |
838 | ||
1a845fbc JK |
839 | static int patmatch(struct grep_pat *p, |
840 | const char *line, const char *eol, | |
97e77784 MK |
841 | regmatch_t *match, int eflags) |
842 | { | |
843 | int hit; | |
844 | ||
7599730b | 845 | if (p->pcre2_pattern) |
94da9193 | 846 | hit = !pcre2match(p, line, eol, match, eflags); |
97e77784 | 847 | else |
b7d36ffc JS |
848 | hit = !regexec_buf(&p->regexp, line, eol - line, 1, match, |
849 | eflags); | |
97e77784 MK |
850 | |
851 | return hit; | |
852 | } | |
853 | ||
1a845fbc | 854 | static void strip_timestamp(const char *bol, const char **eol_p) |
a4d7d2c6 | 855 | { |
1a845fbc | 856 | const char *eol = *eol_p; |
a4d7d2c6 JH |
857 | |
858 | while (bol < --eol) { | |
859 | if (*eol != '>') | |
860 | continue; | |
861 | *eol_p = ++eol; | |
cc8e26ee | 862 | break; |
a4d7d2c6 | 863 | } |
a4d7d2c6 JH |
864 | } |
865 | ||
866 | static struct { | |
867 | const char *field; | |
868 | size_t len; | |
869 | } header_field[] = { | |
870 | { "author ", 7 }, | |
871 | { "committer ", 10 }, | |
72fd13f7 | 872 | { "reflog ", 7 }, |
a4d7d2c6 JH |
873 | }; |
874 | ||
3f566c4e HM |
875 | static int headerless_match_one_pattern(struct grep_pat *p, |
876 | const char *bol, const char *eol, | |
877 | enum grep_context ctx, | |
878 | regmatch_t *pmatch, int eflags) | |
83b5d2f5 JH |
879 | { |
880 | int hit = 0; | |
e701fadb | 881 | const char *start = bol; |
83b5d2f5 | 882 | |
480c1ca6 JH |
883 | if ((p->token != GREP_PATTERN) && |
884 | ((p->token == GREP_PATTERN_HEAD) != (ctx == GREP_CONTEXT_HEAD))) | |
885 | return 0; | |
886 | ||
83b5d2f5 | 887 | again: |
97e77784 | 888 | hit = patmatch(p, bol, eol, pmatch, eflags); |
83b5d2f5 | 889 | |
d7eb527d | 890 | if (hit && p->word_regexp) { |
83b5d2f5 | 891 | if ((pmatch[0].rm_so < 0) || |
84201eae | 892 | (eol - bol) < pmatch[0].rm_so || |
83b5d2f5 JH |
893 | (pmatch[0].rm_eo < 0) || |
894 | (eol - bol) < pmatch[0].rm_eo) | |
895 | die("regexp returned nonsense"); | |
896 | ||
897 | /* Match beginning must be either beginning of the | |
898 | * line, or at word boundary (i.e. the last char must | |
899 | * not be a word char). Similarly, match end must be | |
900 | * either end of the line, or at word boundary | |
901 | * (i.e. the next char must not be a word char). | |
902 | */ | |
fb62eb7f | 903 | if ( ((pmatch[0].rm_so == 0) || |
83b5d2f5 JH |
904 | !word_char(bol[pmatch[0].rm_so-1])) && |
905 | ((pmatch[0].rm_eo == (eol-bol)) || | |
906 | !word_char(bol[pmatch[0].rm_eo])) ) | |
907 | ; | |
908 | else | |
909 | hit = 0; | |
910 | ||
84201eae RS |
911 | /* Words consist of at least one character. */ |
912 | if (pmatch->rm_so == pmatch->rm_eo) | |
913 | hit = 0; | |
914 | ||
83b5d2f5 JH |
915 | if (!hit && pmatch[0].rm_so + bol + 1 < eol) { |
916 | /* There could be more than one match on the | |
917 | * line, and the first match might not be | |
918 | * strict word match. But later ones could be! | |
fb62eb7f RS |
919 | * Forward to the next possible start, i.e. the |
920 | * next position following a non-word char. | |
83b5d2f5 JH |
921 | */ |
922 | bol = pmatch[0].rm_so + bol + 1; | |
fb62eb7f RS |
923 | while (word_char(bol[-1]) && bol < eol) |
924 | bol++; | |
dbb6a4ad | 925 | eflags |= REG_NOTBOL; |
fb62eb7f RS |
926 | if (bol < eol) |
927 | goto again; | |
83b5d2f5 JH |
928 | } |
929 | } | |
e701fadb RS |
930 | if (hit) { |
931 | pmatch[0].rm_so += bol - start; | |
932 | pmatch[0].rm_eo += bol - start; | |
933 | } | |
83b5d2f5 JH |
934 | return hit; |
935 | } | |
936 | ||
3f566c4e HM |
937 | static int match_one_pattern(struct grep_pat *p, |
938 | const char *bol, const char *eol, | |
939 | enum grep_context ctx, regmatch_t *pmatch, | |
940 | int eflags) | |
941 | { | |
942 | const char *field; | |
943 | size_t len; | |
944 | ||
945 | if (p->token == GREP_PATTERN_HEAD) { | |
946 | assert(p->field < ARRAY_SIZE(header_field)); | |
947 | field = header_field[p->field].field; | |
948 | len = header_field[p->field].len; | |
949 | if (strncmp(bol, field, len)) | |
950 | return 0; | |
951 | bol += len; | |
952 | ||
953 | switch (p->field) { | |
954 | case GREP_HEADER_AUTHOR: | |
955 | case GREP_HEADER_COMMITTER: | |
956 | strip_timestamp(bol, &eol); | |
957 | break; | |
958 | default: | |
959 | break; | |
960 | } | |
961 | } | |
962 | ||
963 | return headerless_match_one_pattern(p, bol, eol, ctx, pmatch, eflags); | |
964 | } | |
965 | ||
966 | ||
1a845fbc JK |
967 | static int match_expr_eval(struct grep_opt *opt, struct grep_expr *x, |
968 | const char *bol, const char *eol, | |
969 | enum grep_context ctx, ssize_t *col, | |
68d686e6 | 970 | ssize_t *icol, int collect_hits) |
83b5d2f5 | 971 | { |
0ab7befa JH |
972 | int h = 0; |
973 | ||
c922b01f LT |
974 | if (!x) |
975 | die("Not a valid grep expression"); | |
83b5d2f5 | 976 | switch (x->node) { |
5aaeb733 JH |
977 | case GREP_NODE_TRUE: |
978 | h = 1; | |
979 | break; | |
83b5d2f5 | 980 | case GREP_NODE_ATOM: |
68d686e6 TB |
981 | { |
982 | regmatch_t tmp; | |
983 | h = match_one_pattern(x->u.atom, bol, eol, ctx, | |
984 | &tmp, 0); | |
985 | if (h && (*col < 0 || tmp.rm_so < *col)) | |
986 | *col = tmp.rm_so; | |
987 | } | |
794c0002 RS |
988 | if (x->u.atom->token == GREP_PATTERN_BODY) |
989 | opt->body_hit |= h; | |
83b5d2f5 JH |
990 | break; |
991 | case GREP_NODE_NOT: | |
68d686e6 TB |
992 | /* |
993 | * Upon visiting a GREP_NODE_NOT, col and icol become swapped. | |
994 | */ | |
995 | h = !match_expr_eval(opt, x->u.unary, bol, eol, ctx, icol, col, | |
996 | 0); | |
0ab7befa | 997 | break; |
83b5d2f5 | 998 | case GREP_NODE_AND: |
017c0fcf | 999 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
68d686e6 | 1000 | icol, 0); |
017c0fcf TB |
1001 | if (h || opt->columnnum) { |
1002 | /* | |
1003 | * Don't short-circuit AND when given --column, since a | |
1004 | * NOT earlier in the tree may turn this into an OR. In | |
1005 | * this case, see the below comment. | |
1006 | */ | |
1007 | h &= match_expr_eval(opt, x->u.binary.right, bol, eol, | |
1008 | ctx, col, icol, 0); | |
1009 | } | |
0ab7befa | 1010 | break; |
83b5d2f5 | 1011 | case GREP_NODE_OR: |
017c0fcf TB |
1012 | if (!(collect_hits || opt->columnnum)) { |
1013 | /* | |
1014 | * Don't short-circuit OR when given --column (or | |
1015 | * collecting hits) to ensure we don't skip a later | |
1016 | * child that would produce an earlier match. | |
1017 | */ | |
68d686e6 TB |
1018 | return (match_expr_eval(opt, x->u.binary.left, bol, eol, |
1019 | ctx, col, icol, 0) || | |
1020 | match_expr_eval(opt, x->u.binary.right, bol, | |
1021 | eol, ctx, col, icol, 0)); | |
017c0fcf | 1022 | } |
68d686e6 TB |
1023 | h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col, |
1024 | icol, 0); | |
017c0fcf TB |
1025 | if (collect_hits) |
1026 | x->u.binary.left->hit |= h; | |
68d686e6 | 1027 | h |= match_expr_eval(opt, x->u.binary.right, bol, eol, ctx, col, |
017c0fcf | 1028 | icol, collect_hits); |
0ab7befa JH |
1029 | break; |
1030 | default: | |
d7530708 | 1031 | die("Unexpected node type (internal error) %d", x->node); |
83b5d2f5 | 1032 | } |
0ab7befa JH |
1033 | if (collect_hits) |
1034 | x->hit |= h; | |
1035 | return h; | |
83b5d2f5 JH |
1036 | } |
1037 | ||
1a845fbc JK |
1038 | static int match_expr(struct grep_opt *opt, |
1039 | const char *bol, const char *eol, | |
68d686e6 TB |
1040 | enum grep_context ctx, ssize_t *col, |
1041 | ssize_t *icol, int collect_hits) | |
83b5d2f5 JH |
1042 | { |
1043 | struct grep_expr *x = opt->pattern_expression; | |
68d686e6 | 1044 | return match_expr_eval(opt, x, bol, eol, ctx, col, icol, collect_hits); |
83b5d2f5 JH |
1045 | } |
1046 | ||
1a845fbc JK |
1047 | static int match_line(struct grep_opt *opt, |
1048 | const char *bol, const char *eol, | |
68d686e6 | 1049 | ssize_t *col, ssize_t *icol, |
0ab7befa | 1050 | enum grep_context ctx, int collect_hits) |
83b5d2f5 JH |
1051 | { |
1052 | struct grep_pat *p; | |
017c0fcf | 1053 | int hit = 0; |
79212772 | 1054 | |
83b5d2f5 | 1055 | if (opt->extended) |
68d686e6 TB |
1056 | return match_expr(opt, bol, eol, ctx, col, icol, |
1057 | collect_hits); | |
0ab7befa JH |
1058 | |
1059 | /* we do not call with collect_hits without being extended */ | |
83b5d2f5 | 1060 | for (p = opt->pattern_list; p; p = p->next) { |
68d686e6 TB |
1061 | regmatch_t tmp; |
1062 | if (match_one_pattern(p, bol, eol, ctx, &tmp, 0)) { | |
017c0fcf TB |
1063 | hit |= 1; |
1064 | if (!opt->columnnum) { | |
1065 | /* | |
1066 | * Without --column, any single match on a line | |
1067 | * is enough to know that it needs to be | |
1068 | * printed. With --column, scan _all_ patterns | |
1069 | * to find the earliest. | |
1070 | */ | |
1071 | break; | |
1072 | } | |
1073 | if (*col < 0 || tmp.rm_so < *col) | |
1074 | *col = tmp.rm_so; | |
68d686e6 | 1075 | } |
83b5d2f5 | 1076 | } |
017c0fcf | 1077 | return hit; |
83b5d2f5 JH |
1078 | } |
1079 | ||
1a845fbc JK |
1080 | static int match_next_pattern(struct grep_pat *p, |
1081 | const char *bol, const char *eol, | |
7e8f59d5 RS |
1082 | enum grep_context ctx, |
1083 | regmatch_t *pmatch, int eflags) | |
1084 | { | |
1085 | regmatch_t match; | |
1086 | ||
3f566c4e | 1087 | if (!headerless_match_one_pattern(p, bol, eol, ctx, &match, eflags)) |
7e8f59d5 RS |
1088 | return 0; |
1089 | if (match.rm_so < 0 || match.rm_eo < 0) | |
1090 | return 0; | |
1091 | if (pmatch->rm_so >= 0 && pmatch->rm_eo >= 0) { | |
1092 | if (match.rm_so > pmatch->rm_so) | |
1093 | return 1; | |
1094 | if (match.rm_so == pmatch->rm_so && match.rm_eo < pmatch->rm_eo) | |
1095 | return 1; | |
1096 | } | |
1097 | pmatch->rm_so = match.rm_so; | |
1098 | pmatch->rm_eo = match.rm_eo; | |
1099 | return 1; | |
1100 | } | |
1101 | ||
3f566c4e HM |
1102 | int grep_next_match(struct grep_opt *opt, |
1103 | const char *bol, const char *eol, | |
1104 | enum grep_context ctx, regmatch_t *pmatch, | |
1105 | enum grep_header_field field, int eflags) | |
7e8f59d5 RS |
1106 | { |
1107 | struct grep_pat *p; | |
1108 | int hit = 0; | |
1109 | ||
1110 | pmatch->rm_so = pmatch->rm_eo = -1; | |
1111 | if (bol < eol) { | |
3f566c4e HM |
1112 | for (p = ((ctx == GREP_CONTEXT_HEAD) |
1113 | ? opt->header_list : opt->pattern_list); | |
1114 | p; p = p->next) { | |
7e8f59d5 | 1115 | switch (p->token) { |
7e8f59d5 | 1116 | case GREP_PATTERN_HEAD: |
3f566c4e HM |
1117 | if ((field != GREP_HEADER_FIELD_MAX) && |
1118 | (p->field != field)) | |
1119 | continue; | |
1120 | /* fall thru */ | |
1121 | case GREP_PATTERN: /* atom */ | |
7e8f59d5 RS |
1122 | case GREP_PATTERN_BODY: |
1123 | hit |= match_next_pattern(p, bol, eol, ctx, | |
1124 | pmatch, eflags); | |
1125 | break; | |
1126 | default: | |
1127 | break; | |
1128 | } | |
1129 | } | |
1130 | } | |
1131 | return hit; | |
1132 | } | |
1133 | ||
c707ded3 TB |
1134 | static void show_line_header(struct grep_opt *opt, const char *name, |
1135 | unsigned lno, ssize_t cno, char sign) | |
7e8f59d5 | 1136 | { |
1d84f72e | 1137 | if (opt->heading && opt->last_shown == 0) { |
fa151dc5 | 1138 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
1d84f72e RS |
1139 | opt->output(opt, "\n", 1); |
1140 | } | |
5dd06d38 RS |
1141 | opt->last_shown = lno; |
1142 | ||
1d84f72e | 1143 | if (!opt->heading && opt->pathname) { |
fa151dc5 | 1144 | output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]); |
55f638bd | 1145 | output_sep(opt, sign); |
5b594f45 FK |
1146 | } |
1147 | if (opt->linenum) { | |
1148 | char buf[32]; | |
1a168e5c | 1149 | xsnprintf(buf, sizeof(buf), "%d", lno); |
fa151dc5 | 1150 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]); |
55f638bd | 1151 | output_sep(opt, sign); |
5b594f45 | 1152 | } |
89252cd0 TB |
1153 | /* |
1154 | * Treat 'cno' as the 1-indexed offset from the start of a non-context | |
1155 | * line to its first match. Otherwise, 'cno' is 0 indicating that we are | |
1156 | * being called with a context line. | |
1157 | */ | |
1158 | if (opt->columnnum && cno) { | |
1159 | char buf[32]; | |
1160 | xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno); | |
d036d667 | 1161 | output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]); |
89252cd0 TB |
1162 | output_sep(opt, sign); |
1163 | } | |
c707ded3 TB |
1164 | } |
1165 | ||
1a845fbc JK |
1166 | static void show_line(struct grep_opt *opt, |
1167 | const char *bol, const char *eol, | |
c707ded3 TB |
1168 | const char *name, unsigned lno, ssize_t cno, char sign) |
1169 | { | |
1170 | int rest = eol - bol; | |
9d8db06e TB |
1171 | const char *match_color = NULL; |
1172 | const char *line_color = NULL; | |
c707ded3 TB |
1173 | |
1174 | if (opt->file_break && opt->last_shown == 0) { | |
1175 | if (opt->show_hunk_mark) | |
1176 | opt->output(opt, "\n", 1); | |
1177 | } else if (opt->pre_context || opt->post_context || opt->funcbody) { | |
1178 | if (opt->last_shown == 0) { | |
1179 | if (opt->show_hunk_mark) { | |
87ece7ce | 1180 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1181 | opt->output(opt, "\n", 1); |
1182 | } | |
1183 | } else if (lno > opt->last_shown + 1) { | |
87ece7ce | 1184 | output_color(opt, "--", 2, opt->colors[GREP_COLOR_SEP]); |
c707ded3 TB |
1185 | opt->output(opt, "\n", 1); |
1186 | } | |
1187 | } | |
9d8db06e TB |
1188 | if (!opt->only_matching) { |
1189 | /* | |
1190 | * In case the line we're being called with contains more than | |
1191 | * one match, leave printing each header to the loop below. | |
1192 | */ | |
1193 | show_line_header(opt, name, lno, cno, sign); | |
1194 | } | |
1195 | if (opt->color || opt->only_matching) { | |
7e8f59d5 RS |
1196 | regmatch_t match; |
1197 | enum grep_context ctx = GREP_CONTEXT_BODY; | |
7e8f59d5 RS |
1198 | int eflags = 0; |
1199 | ||
9d8db06e TB |
1200 | if (opt->color) { |
1201 | if (sign == ':') | |
87ece7ce | 1202 | match_color = opt->colors[GREP_COLOR_MATCH_SELECTED]; |
9d8db06e | 1203 | else |
87ece7ce | 1204 | match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT]; |
9d8db06e | 1205 | if (sign == ':') |
87ece7ce | 1206 | line_color = opt->colors[GREP_COLOR_SELECTED]; |
9d8db06e | 1207 | else if (sign == '-') |
87ece7ce | 1208 | line_color = opt->colors[GREP_COLOR_CONTEXT]; |
9d8db06e | 1209 | else if (sign == '=') |
87ece7ce | 1210 | line_color = opt->colors[GREP_COLOR_FUNCTION]; |
9d8db06e | 1211 | } |
3f566c4e HM |
1212 | while (grep_next_match(opt, bol, eol, ctx, &match, |
1213 | GREP_HEADER_FIELD_MAX, eflags)) { | |
1f5b9cc4 RS |
1214 | if (match.rm_so == match.rm_eo) |
1215 | break; | |
5b594f45 | 1216 | |
9d8db06e TB |
1217 | if (opt->only_matching) |
1218 | show_line_header(opt, name, lno, cno, sign); | |
1219 | else | |
1220 | output_color(opt, bol, match.rm_so, line_color); | |
55f638bd | 1221 | output_color(opt, bol + match.rm_so, |
79a77109 | 1222 | match.rm_eo - match.rm_so, match_color); |
9d8db06e TB |
1223 | if (opt->only_matching) |
1224 | opt->output(opt, "\n", 1); | |
7e8f59d5 | 1225 | bol += match.rm_eo; |
9d8db06e | 1226 | cno += match.rm_eo; |
7e8f59d5 RS |
1227 | rest -= match.rm_eo; |
1228 | eflags = REG_NOTBOL; | |
1229 | } | |
7e8f59d5 | 1230 | } |
9d8db06e TB |
1231 | if (!opt->only_matching) { |
1232 | output_color(opt, bol, rest, line_color); | |
1233 | opt->output(opt, "\n", 1); | |
1234 | } | |
7e8f59d5 RS |
1235 | } |
1236 | ||
78db6ea9 JK |
1237 | int grep_use_locks; |
1238 | ||
0579f91d TR |
1239 | /* |
1240 | * This lock protects access to the gitattributes machinery, which is | |
1241 | * not thread-safe. | |
1242 | */ | |
1243 | pthread_mutex_t grep_attr_mutex; | |
1244 | ||
78db6ea9 | 1245 | static inline void grep_attr_lock(void) |
0579f91d | 1246 | { |
78db6ea9 | 1247 | if (grep_use_locks) |
0579f91d TR |
1248 | pthread_mutex_lock(&grep_attr_mutex); |
1249 | } | |
1250 | ||
78db6ea9 | 1251 | static inline void grep_attr_unlock(void) |
0579f91d | 1252 | { |
78db6ea9 | 1253 | if (grep_use_locks) |
0579f91d TR |
1254 | pthread_mutex_unlock(&grep_attr_mutex); |
1255 | } | |
b3aeb285 | 1256 | |
1a845fbc JK |
1257 | static int match_funcname(struct grep_opt *opt, struct grep_source *gs, |
1258 | const char *bol, const char *eol) | |
2944e4e6 | 1259 | { |
60ecac98 | 1260 | xdemitconf_t *xecfg = opt->priv; |
0579f91d | 1261 | if (xecfg && !xecfg->find_func) { |
acd00ea0 | 1262 | grep_source_load_driver(gs, opt->repo->index); |
94ad9d9e JK |
1263 | if (gs->driver->funcname.pattern) { |
1264 | const struct userdiff_funcname *pe = &gs->driver->funcname; | |
0579f91d TR |
1265 | xdiff_set_find_func(xecfg, pe->pattern, pe->cflags); |
1266 | } else { | |
1267 | xecfg = opt->priv = NULL; | |
1268 | } | |
1269 | } | |
1270 | ||
1271 | if (xecfg) { | |
60ecac98 RS |
1272 | char buf[1]; |
1273 | return xecfg->find_func(bol, eol - bol, buf, 1, | |
1274 | xecfg->find_func_priv) >= 0; | |
1275 | } | |
1276 | ||
2944e4e6 RS |
1277 | if (bol == eol) |
1278 | return 0; | |
1279 | if (isalpha(*bol) || *bol == '_' || *bol == '$') | |
1280 | return 1; | |
1281 | return 0; | |
1282 | } | |
1283 | ||
e1327023 | 1284 | static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs, |
1a845fbc | 1285 | const char *bol, unsigned lno) |
2944e4e6 | 1286 | { |
e1327023 | 1287 | while (bol > gs->buf) { |
1a845fbc | 1288 | const char *eol = --bol; |
2944e4e6 | 1289 | |
e1327023 | 1290 | while (bol > gs->buf && bol[-1] != '\n') |
2944e4e6 RS |
1291 | bol--; |
1292 | lno--; | |
1293 | ||
1294 | if (lno <= opt->last_shown) | |
1295 | break; | |
1296 | ||
e1327023 | 1297 | if (match_funcname(opt, gs, bol, eol)) { |
89252cd0 | 1298 | show_line(opt, bol, eol, gs->name, lno, 0, '='); |
2944e4e6 RS |
1299 | break; |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | ||
a5dc20b0 RS |
1304 | static int is_empty_line(const char *bol, const char *eol); |
1305 | ||
e1327023 | 1306 | static void show_pre_context(struct grep_opt *opt, struct grep_source *gs, |
1a845fbc | 1307 | const char *bol, const char *end, unsigned lno) |
49de3216 | 1308 | { |
6653a01b | 1309 | unsigned cur = lno, from = 1, funcname_lno = 0, orig_from; |
a5dc20b0 | 1310 | int funcname_needed = !!opt->funcname, comment_needed = 0; |
ba8ea749 | 1311 | |
49de3216 RS |
1312 | if (opt->pre_context < lno) |
1313 | from = lno - opt->pre_context; | |
1314 | if (from <= opt->last_shown) | |
1315 | from = opt->last_shown + 1; | |
6653a01b | 1316 | orig_from = from; |
a5dc20b0 RS |
1317 | if (opt->funcbody) { |
1318 | if (match_funcname(opt, gs, bol, end)) | |
1319 | comment_needed = 1; | |
1320 | else | |
1321 | funcname_needed = 1; | |
6653a01b RS |
1322 | from = opt->last_shown + 1; |
1323 | } | |
49de3216 RS |
1324 | |
1325 | /* Rewind. */ | |
6653a01b | 1326 | while (bol > gs->buf && cur > from) { |
1a845fbc JK |
1327 | const char *next_bol = bol; |
1328 | const char *eol = --bol; | |
2944e4e6 | 1329 | |
e1327023 | 1330 | while (bol > gs->buf && bol[-1] != '\n') |
49de3216 RS |
1331 | bol--; |
1332 | cur--; | |
a5dc20b0 RS |
1333 | if (comment_needed && (is_empty_line(bol, eol) || |
1334 | match_funcname(opt, gs, bol, eol))) { | |
1335 | comment_needed = 0; | |
1336 | from = orig_from; | |
1337 | if (cur < from) { | |
1338 | cur++; | |
1339 | bol = next_bol; | |
1340 | break; | |
1341 | } | |
1342 | } | |
e1327023 | 1343 | if (funcname_needed && match_funcname(opt, gs, bol, eol)) { |
2944e4e6 RS |
1344 | funcname_lno = cur; |
1345 | funcname_needed = 0; | |
a5dc20b0 RS |
1346 | if (opt->funcbody) |
1347 | comment_needed = 1; | |
1348 | else | |
1349 | from = orig_from; | |
2944e4e6 | 1350 | } |
49de3216 RS |
1351 | } |
1352 | ||
2944e4e6 RS |
1353 | /* We need to look even further back to find a function signature. */ |
1354 | if (opt->funcname && funcname_needed) | |
e1327023 | 1355 | show_funcname_line(opt, gs, bol, cur); |
2944e4e6 | 1356 | |
49de3216 RS |
1357 | /* Back forward. */ |
1358 | while (cur < lno) { | |
1a845fbc | 1359 | const char *eol = bol, sign = (cur == funcname_lno) ? '=' : '-'; |
49de3216 RS |
1360 | |
1361 | while (*eol != '\n') | |
1362 | eol++; | |
89252cd0 | 1363 | show_line(opt, bol, eol, gs->name, cur, 0, sign); |
49de3216 RS |
1364 | bol = eol + 1; |
1365 | cur++; | |
1366 | } | |
1367 | } | |
1368 | ||
a26345b6 JH |
1369 | static int should_lookahead(struct grep_opt *opt) |
1370 | { | |
1371 | struct grep_pat *p; | |
1372 | ||
1373 | if (opt->extended) | |
1374 | return 0; /* punt for too complex stuff */ | |
1375 | if (opt->invert) | |
1376 | return 0; | |
1377 | for (p = opt->pattern_list; p; p = p->next) { | |
1378 | if (p->token != GREP_PATTERN) | |
1379 | return 0; /* punt for "header only" and stuff */ | |
1380 | } | |
1381 | return 1; | |
1382 | } | |
1383 | ||
1384 | static int look_ahead(struct grep_opt *opt, | |
1385 | unsigned long *left_p, | |
1386 | unsigned *lno_p, | |
1a845fbc | 1387 | const char **bol_p) |
a26345b6 JH |
1388 | { |
1389 | unsigned lno = *lno_p; | |
1a845fbc | 1390 | const char *bol = *bol_p; |
a26345b6 | 1391 | struct grep_pat *p; |
1a845fbc | 1392 | const char *sp, *last_bol; |
a26345b6 JH |
1393 | regoff_t earliest = -1; |
1394 | ||
1395 | for (p = opt->pattern_list; p; p = p->next) { | |
1396 | int hit; | |
1397 | regmatch_t m; | |
1398 | ||
97e77784 | 1399 | hit = patmatch(p, bol, bol + *left_p, &m, 0); |
a26345b6 JH |
1400 | if (!hit || m.rm_so < 0 || m.rm_eo < 0) |
1401 | continue; | |
1402 | if (earliest < 0 || m.rm_so < earliest) | |
1403 | earliest = m.rm_so; | |
1404 | } | |
1405 | ||
1406 | if (earliest < 0) { | |
1407 | *bol_p = bol + *left_p; | |
1408 | *left_p = 0; | |
1409 | return 1; | |
1410 | } | |
1411 | for (sp = bol + earliest; bol < sp && sp[-1] != '\n'; sp--) | |
1412 | ; /* find the beginning of the line */ | |
1413 | last_bol = sp; | |
1414 | ||
1415 | for (sp = bol; sp < last_bol; sp++) { | |
1416 | if (*sp == '\n') | |
1417 | lno++; | |
1418 | } | |
1419 | *left_p -= last_bol - bol; | |
1420 | *bol_p = last_bol; | |
1421 | *lno_p = lno; | |
1422 | return 0; | |
1423 | } | |
1424 | ||
38bbc2ea NTND |
1425 | static int fill_textconv_grep(struct repository *r, |
1426 | struct userdiff_driver *driver, | |
335ec3bf JK |
1427 | struct grep_source *gs) |
1428 | { | |
1429 | struct diff_filespec *df; | |
1430 | char *buf; | |
1431 | size_t size; | |
1432 | ||
1433 | if (!driver || !driver->textconv) | |
1434 | return grep_source_load(gs); | |
1435 | ||
1436 | /* | |
1437 | * The textconv interface is intimately tied to diff_filespecs, so we | |
1438 | * have to pretend to be one. If we could unify the grep_source | |
1439 | * and diff_filespec structs, this mess could just go away. | |
1440 | */ | |
1441 | df = alloc_filespec(gs->path); | |
1442 | switch (gs->type) { | |
1c41c82b | 1443 | case GREP_SOURCE_OID: |
335ec3bf JK |
1444 | fill_filespec(df, gs->identifier, 1, 0100644); |
1445 | break; | |
1446 | case GREP_SOURCE_FILE: | |
14228447 | 1447 | fill_filespec(df, null_oid(), 0, 0100644); |
335ec3bf JK |
1448 | break; |
1449 | default: | |
033abf97 | 1450 | BUG("attempt to textconv something without a path?"); |
335ec3bf JK |
1451 | } |
1452 | ||
1453 | /* | |
1d1729ca MT |
1454 | * fill_textconv is not remotely thread-safe; it modifies the global |
1455 | * diff tempfile structure, writes to the_repo's odb and might | |
1456 | * internally call thread-unsafe functions such as the | |
1457 | * prepare_packed_git() lazy-initializator. Because of the last two, we | |
1458 | * must ensure mutual exclusion between this call and the object reading | |
1459 | * API, thus we use obj_read_lock() here. | |
1460 | * | |
1461 | * TODO: allowing text conversion to run in parallel with object | |
1462 | * reading operations might increase performance in the multithreaded | |
1463 | * non-worktreee git-grep with --textconv. | |
335ec3bf | 1464 | */ |
1d1729ca | 1465 | obj_read_lock(); |
38bbc2ea | 1466 | size = fill_textconv(r, driver, df, &buf); |
1d1729ca | 1467 | obj_read_unlock(); |
335ec3bf JK |
1468 | free_filespec(df); |
1469 | ||
1470 | /* | |
1471 | * The normal fill_textconv usage by the diff machinery would just keep | |
1472 | * the textconv'd buf separate from the diff_filespec. But much of the | |
1473 | * grep code passes around a grep_source and assumes that its "buf" | |
1474 | * pointer is the beginning of the thing we are searching. So let's | |
1475 | * install our textconv'd version into the grep_source, taking care not | |
1476 | * to leak any existing buffer. | |
1477 | */ | |
1478 | grep_source_clear_data(gs); | |
1479 | gs->buf = buf; | |
1480 | gs->size = size; | |
1481 | ||
1482 | return 0; | |
1483 | } | |
1484 | ||
4aa2c475 RS |
1485 | static int is_empty_line(const char *bol, const char *eol) |
1486 | { | |
1487 | while (bol < eol && isspace(*bol)) | |
1488 | bol++; | |
1489 | return bol == eol; | |
1490 | } | |
1491 | ||
e1327023 | 1492 | static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int collect_hits) |
83b5d2f5 | 1493 | { |
1a845fbc JK |
1494 | const char *bol; |
1495 | const char *peek_bol = NULL; | |
e1327023 | 1496 | unsigned long left; |
83b5d2f5 | 1497 | unsigned lno = 1; |
83b5d2f5 | 1498 | unsigned last_hit = 0; |
83b5d2f5 | 1499 | int binary_match_only = 0; |
83b5d2f5 | 1500 | unsigned count = 0; |
a26345b6 | 1501 | int try_lookahead = 0; |
ba8ea749 | 1502 | int show_function = 0; |
335ec3bf | 1503 | struct userdiff_driver *textconv = NULL; |
480c1ca6 | 1504 | enum grep_context ctx = GREP_CONTEXT_HEAD; |
60ecac98 | 1505 | xdemitconf_t xecfg; |
83b5d2f5 | 1506 | |
de99eb0c ES |
1507 | if (!opt->status_only && gs->name == NULL) |
1508 | BUG("grep call which could print a name requires " | |
1509 | "grep_source.name be non-NULL"); | |
1510 | ||
5b594f45 FK |
1511 | if (!opt->output) |
1512 | opt->output = std_output; | |
1513 | ||
ba8ea749 RS |
1514 | if (opt->pre_context || opt->post_context || opt->file_break || |
1515 | opt->funcbody) { | |
08303c36 RS |
1516 | /* Show hunk marks, except for the first file. */ |
1517 | if (opt->last_shown) | |
1518 | opt->show_hunk_mark = 1; | |
1519 | /* | |
1520 | * If we're using threads then we can't easily identify | |
1521 | * the first file. Always put hunk marks in that case | |
1522 | * and skip the very first one later in work_done(). | |
1523 | */ | |
1524 | if (opt->output != std_output) | |
1525 | opt->show_hunk_mark = 1; | |
1526 | } | |
431d6e7b RS |
1527 | opt->last_shown = 0; |
1528 | ||
335ec3bf | 1529 | if (opt->allow_textconv) { |
acd00ea0 | 1530 | grep_source_load_driver(gs, opt->repo->index); |
335ec3bf JK |
1531 | /* |
1532 | * We might set up the shared textconv cache data here, which | |
1d1729ca MT |
1533 | * is not thread-safe. Also, get_oid_with_context() and |
1534 | * parse_object() might be internally called. As they are not | |
84544f2e | 1535 | * currently thread-safe and might be racy with object reading, |
1d1729ca | 1536 | * obj_read_lock() must be called. |
335ec3bf JK |
1537 | */ |
1538 | grep_attr_lock(); | |
1d1729ca | 1539 | obj_read_lock(); |
bd7ad45b | 1540 | textconv = userdiff_get_textconv(opt->repo, gs->driver); |
1d1729ca | 1541 | obj_read_unlock(); |
335ec3bf JK |
1542 | grep_attr_unlock(); |
1543 | } | |
1544 | ||
1545 | /* | |
1546 | * We know the result of a textconv is text, so we only have to care | |
1547 | * about binary handling if we are not using it. | |
1548 | */ | |
1549 | if (!textconv) { | |
1550 | switch (opt->binary) { | |
1551 | case GREP_BINARY_DEFAULT: | |
acd00ea0 | 1552 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1553 | binary_match_only = 1; |
1554 | break; | |
1555 | case GREP_BINARY_NOMATCH: | |
acd00ea0 | 1556 | if (grep_source_is_binary(gs, opt->repo->index)) |
335ec3bf JK |
1557 | return 0; /* Assume unmatch */ |
1558 | break; | |
1559 | case GREP_BINARY_TEXT: | |
1560 | break; | |
1561 | default: | |
033abf97 | 1562 | BUG("unknown binary handling mode"); |
335ec3bf | 1563 | } |
83b5d2f5 JH |
1564 | } |
1565 | ||
60ecac98 | 1566 | memset(&xecfg, 0, sizeof(xecfg)); |
0579f91d TR |
1567 | opt->priv = &xecfg; |
1568 | ||
a26345b6 | 1569 | try_lookahead = should_lookahead(opt); |
60ecac98 | 1570 | |
38bbc2ea | 1571 | if (fill_textconv_grep(opt->repo, textconv, gs) < 0) |
08265798 JK |
1572 | return 0; |
1573 | ||
e1327023 JK |
1574 | bol = gs->buf; |
1575 | left = gs->size; | |
83b5d2f5 | 1576 | while (left) { |
1a845fbc | 1577 | const char *eol; |
0ab7befa | 1578 | int hit; |
89252cd0 | 1579 | ssize_t cno; |
68d686e6 | 1580 | ssize_t col = -1, icol = -1; |
83b5d2f5 | 1581 | |
a26345b6 | 1582 | /* |
8997da38 | 1583 | * look_ahead() skips quickly to the line that possibly |
a26345b6 JH |
1584 | * has the next hit; don't call it if we need to do |
1585 | * something more than just skipping the current line | |
1586 | * in response to an unmatch for the current line. E.g. | |
1587 | * inside a post-context window, we will show the current | |
1588 | * line as a context around the previous hit when it | |
1589 | * doesn't hit. | |
1590 | */ | |
1591 | if (try_lookahead | |
1592 | && !(last_hit | |
ba8ea749 RS |
1593 | && (show_function || |
1594 | lno <= last_hit + opt->post_context)) | |
a26345b6 JH |
1595 | && look_ahead(opt, &left, &lno, &bol)) |
1596 | break; | |
83b5d2f5 | 1597 | eol = end_of_line(bol, &left); |
83b5d2f5 | 1598 | |
480c1ca6 JH |
1599 | if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol)) |
1600 | ctx = GREP_CONTEXT_BODY; | |
1601 | ||
68d686e6 | 1602 | hit = match_line(opt, bol, eol, &col, &icol, ctx, collect_hits); |
83b5d2f5 | 1603 | |
0ab7befa JH |
1604 | if (collect_hits) |
1605 | goto next_line; | |
1606 | ||
83b5d2f5 JH |
1607 | /* "grep -v -e foo -e bla" should list lines |
1608 | * that do not have either, so inversion should | |
1609 | * be done outside. | |
1610 | */ | |
1611 | if (opt->invert) | |
1612 | hit = !hit; | |
1613 | if (opt->unmatch_name_only) { | |
1614 | if (hit) | |
1615 | return 0; | |
1616 | goto next_line; | |
1617 | } | |
1618 | if (hit) { | |
1619 | count++; | |
1620 | if (opt->status_only) | |
1621 | return 1; | |
321ffcc0 | 1622 | if (opt->name_only) { |
e1327023 | 1623 | show_name(opt, gs->name); |
321ffcc0 RS |
1624 | return 1; |
1625 | } | |
c30c10cf RS |
1626 | if (opt->count) |
1627 | goto next_line; | |
83b5d2f5 | 1628 | if (binary_match_only) { |
5b594f45 | 1629 | opt->output(opt, "Binary file ", 12); |
e1327023 | 1630 | output_color(opt, gs->name, strlen(gs->name), |
fa151dc5 | 1631 | opt->colors[GREP_COLOR_FILENAME]); |
5b594f45 | 1632 | opt->output(opt, " matches\n", 9); |
83b5d2f5 JH |
1633 | return 1; |
1634 | } | |
83b5d2f5 JH |
1635 | /* Hit at this line. If we haven't shown the |
1636 | * pre-context lines, we would need to show them. | |
83b5d2f5 | 1637 | */ |
ba8ea749 | 1638 | if (opt->pre_context || opt->funcbody) |
e1327023 | 1639 | show_pre_context(opt, gs, bol, eol, lno); |
2944e4e6 | 1640 | else if (opt->funcname) |
e1327023 | 1641 | show_funcname_line(opt, gs, bol, lno); |
89252cd0 TB |
1642 | cno = opt->invert ? icol : col; |
1643 | if (cno < 0) { | |
1644 | /* | |
1645 | * A negative cno indicates that there was no | |
1646 | * match on the line. We are thus inverted and | |
1647 | * being asked to show all lines that _don't_ | |
1648 | * match a given expression. Therefore, set cno | |
1649 | * to 0 to suggest the whole line matches. | |
1650 | */ | |
1651 | cno = 0; | |
1652 | } | |
1653 | show_line(opt, bol, eol, gs->name, lno, cno + 1, ':'); | |
5dd06d38 | 1654 | last_hit = lno; |
ba8ea749 RS |
1655 | if (opt->funcbody) |
1656 | show_function = 1; | |
1657 | goto next_line; | |
83b5d2f5 | 1658 | } |
4aa2c475 RS |
1659 | if (show_function && (!peek_bol || peek_bol < bol)) { |
1660 | unsigned long peek_left = left; | |
1a845fbc | 1661 | const char *peek_eol = eol; |
4aa2c475 RS |
1662 | |
1663 | /* | |
1664 | * Trailing empty lines are not interesting. | |
1665 | * Peek past them to see if they belong to the | |
1666 | * body of the current function. | |
1667 | */ | |
1668 | peek_bol = bol; | |
1669 | while (is_empty_line(peek_bol, peek_eol)) { | |
1670 | peek_bol = peek_eol + 1; | |
1671 | peek_eol = end_of_line(peek_bol, &peek_left); | |
1672 | } | |
1673 | ||
1674 | if (match_funcname(opt, gs, peek_bol, peek_eol)) | |
1675 | show_function = 0; | |
1676 | } | |
ba8ea749 RS |
1677 | if (show_function || |
1678 | (last_hit && lno <= last_hit + opt->post_context)) { | |
83b5d2f5 JH |
1679 | /* If the last hit is within the post context, |
1680 | * we need to show this line. | |
1681 | */ | |
89252cd0 | 1682 | show_line(opt, bol, eol, gs->name, lno, col + 1, '-'); |
83b5d2f5 | 1683 | } |
83b5d2f5 JH |
1684 | |
1685 | next_line: | |
1686 | bol = eol + 1; | |
1687 | if (!left) | |
1688 | break; | |
1689 | left--; | |
1690 | lno++; | |
1691 | } | |
1692 | ||
0ab7befa JH |
1693 | if (collect_hits) |
1694 | return 0; | |
b48fb5b6 | 1695 | |
83b5d2f5 | 1696 | if (opt->status_only) |
e1f68c66 | 1697 | return opt->unmatch_name_only; |
83b5d2f5 JH |
1698 | if (opt->unmatch_name_only) { |
1699 | /* We did not see any hit, so we want to show this */ | |
e1327023 | 1700 | show_name(opt, gs->name); |
83b5d2f5 JH |
1701 | return 1; |
1702 | } | |
1703 | ||
60ecac98 RS |
1704 | xdiff_clear_find_func(&xecfg); |
1705 | opt->priv = NULL; | |
1706 | ||
83b5d2f5 JH |
1707 | /* NEEDSWORK: |
1708 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
1709 | * which feels mostly useless but sometimes useful. Maybe | |
1710 | * make it another option? For now suppress them. | |
1711 | */ | |
5b594f45 FK |
1712 | if (opt->count && count) { |
1713 | char buf[32]; | |
f76d947a RS |
1714 | if (opt->pathname) { |
1715 | output_color(opt, gs->name, strlen(gs->name), | |
fa151dc5 | 1716 | opt->colors[GREP_COLOR_FILENAME]); |
f76d947a RS |
1717 | output_sep(opt, ':'); |
1718 | } | |
1a168e5c | 1719 | xsnprintf(buf, sizeof(buf), "%u\n", count); |
5b594f45 | 1720 | opt->output(opt, buf, strlen(buf)); |
c30c10cf | 1721 | return 1; |
5b594f45 | 1722 | } |
83b5d2f5 JH |
1723 | return !!last_hit; |
1724 | } | |
1725 | ||
0ab7befa JH |
1726 | static void clr_hit_marker(struct grep_expr *x) |
1727 | { | |
1728 | /* All-hit markers are meaningful only at the very top level | |
1729 | * OR node. | |
1730 | */ | |
1731 | while (1) { | |
1732 | x->hit = 0; | |
1733 | if (x->node != GREP_NODE_OR) | |
1734 | return; | |
1735 | x->u.binary.left->hit = 0; | |
1736 | x = x->u.binary.right; | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | static int chk_hit_marker(struct grep_expr *x) | |
1741 | { | |
1742 | /* Top level nodes have hit markers. See if they all are hits */ | |
1743 | while (1) { | |
1744 | if (x->node != GREP_NODE_OR) | |
1745 | return x->hit; | |
1746 | if (!x->u.binary.left->hit) | |
1747 | return 0; | |
1748 | x = x->u.binary.right; | |
1749 | } | |
1750 | } | |
1751 | ||
e1327023 | 1752 | int grep_source(struct grep_opt *opt, struct grep_source *gs) |
0ab7befa JH |
1753 | { |
1754 | /* | |
1755 | * we do not have to do the two-pass grep when we do not check | |
1756 | * buffer-wide "all-match". | |
1757 | */ | |
794c0002 | 1758 | if (!opt->all_match && !opt->no_body_match) |
e1327023 | 1759 | return grep_source_1(opt, gs, 0); |
0ab7befa JH |
1760 | |
1761 | /* Otherwise the toplevel "or" terms hit a bit differently. | |
1762 | * We first clear hit markers from them. | |
1763 | */ | |
1764 | clr_hit_marker(opt->pattern_expression); | |
794c0002 | 1765 | opt->body_hit = 0; |
e1327023 | 1766 | grep_source_1(opt, gs, 1); |
0ab7befa | 1767 | |
794c0002 RS |
1768 | if (opt->all_match && !chk_hit_marker(opt->pattern_expression)) |
1769 | return 0; | |
1770 | if (opt->no_body_match && opt->body_hit) | |
0ab7befa JH |
1771 | return 0; |
1772 | ||
e1327023 JK |
1773 | return grep_source_1(opt, gs, 0); |
1774 | } | |
1775 | ||
1e668716 JK |
1776 | static void grep_source_init_buf(struct grep_source *gs, |
1777 | const char *buf, | |
50d92b5f JT |
1778 | unsigned long size) |
1779 | { | |
1780 | gs->type = GREP_SOURCE_BUF; | |
1781 | gs->name = NULL; | |
1782 | gs->path = NULL; | |
1783 | gs->buf = buf; | |
1784 | gs->size = size; | |
1785 | gs->driver = NULL; | |
1786 | gs->identifier = NULL; | |
1787 | } | |
1788 | ||
1e668716 | 1789 | int grep_buffer(struct grep_opt *opt, const char *buf, unsigned long size) |
e1327023 JK |
1790 | { |
1791 | struct grep_source gs; | |
1792 | int r; | |
1793 | ||
50d92b5f | 1794 | grep_source_init_buf(&gs, buf, size); |
e1327023 JK |
1795 | |
1796 | r = grep_source(opt, &gs); | |
1797 | ||
1798 | grep_source_clear(&gs); | |
1799 | return r; | |
1800 | } | |
1801 | ||
50d92b5f JT |
1802 | void grep_source_init_file(struct grep_source *gs, const char *name, |
1803 | const char *path) | |
e1327023 | 1804 | { |
50d92b5f | 1805 | gs->type = GREP_SOURCE_FILE; |
8c53f071 JK |
1806 | gs->name = xstrdup_or_null(name); |
1807 | gs->path = xstrdup_or_null(path); | |
e1327023 JK |
1808 | gs->buf = NULL; |
1809 | gs->size = 0; | |
94ad9d9e | 1810 | gs->driver = NULL; |
50d92b5f JT |
1811 | gs->identifier = xstrdup(path); |
1812 | } | |
e1327023 | 1813 | |
50d92b5f | 1814 | void grep_source_init_oid(struct grep_source *gs, const char *name, |
0693806b JT |
1815 | const char *path, const struct object_id *oid, |
1816 | struct repository *repo) | |
50d92b5f JT |
1817 | { |
1818 | gs->type = GREP_SOURCE_OID; | |
1819 | gs->name = xstrdup_or_null(name); | |
1820 | gs->path = xstrdup_or_null(path); | |
1821 | gs->buf = NULL; | |
1822 | gs->size = 0; | |
1823 | gs->driver = NULL; | |
1824 | gs->identifier = oiddup(oid); | |
0693806b | 1825 | gs->repo = repo; |
e1327023 JK |
1826 | } |
1827 | ||
1828 | void grep_source_clear(struct grep_source *gs) | |
1829 | { | |
88ce3ef6 ÆAB |
1830 | FREE_AND_NULL(gs->name); |
1831 | FREE_AND_NULL(gs->path); | |
1832 | FREE_AND_NULL(gs->identifier); | |
e1327023 JK |
1833 | grep_source_clear_data(gs); |
1834 | } | |
1835 | ||
1836 | void grep_source_clear_data(struct grep_source *gs) | |
1837 | { | |
1838 | switch (gs->type) { | |
1839 | case GREP_SOURCE_FILE: | |
1c41c82b | 1840 | case GREP_SOURCE_OID: |
1e668716 JK |
1841 | /* these types own the buffer */ |
1842 | free((char *)gs->buf); | |
1843 | gs->buf = NULL; | |
e1327023 JK |
1844 | gs->size = 0; |
1845 | break; | |
1846 | case GREP_SOURCE_BUF: | |
1847 | /* leave user-provided buf intact */ | |
1848 | break; | |
1849 | } | |
1850 | } | |
1851 | ||
1c41c82b | 1852 | static int grep_source_load_oid(struct grep_source *gs) |
e1327023 JK |
1853 | { |
1854 | enum object_type type; | |
1855 | ||
0693806b JT |
1856 | gs->buf = repo_read_object_file(gs->repo, gs->identifier, &type, |
1857 | &gs->size); | |
e1327023 JK |
1858 | if (!gs->buf) |
1859 | return error(_("'%s': unable to read %s"), | |
1860 | gs->name, | |
1c41c82b | 1861 | oid_to_hex(gs->identifier)); |
e1327023 JK |
1862 | return 0; |
1863 | } | |
1864 | ||
1865 | static int grep_source_load_file(struct grep_source *gs) | |
1866 | { | |
1867 | const char *filename = gs->identifier; | |
1868 | struct stat st; | |
1869 | char *data; | |
1870 | size_t size; | |
1871 | int i; | |
1872 | ||
1873 | if (lstat(filename, &st) < 0) { | |
1874 | err_ret: | |
1875 | if (errno != ENOENT) | |
7645d8f1 | 1876 | error_errno(_("failed to stat '%s'"), filename); |
e1327023 JK |
1877 | return -1; |
1878 | } | |
1879 | if (!S_ISREG(st.st_mode)) | |
1880 | return -1; | |
1881 | size = xsize_t(st.st_size); | |
1882 | i = open(filename, O_RDONLY); | |
1883 | if (i < 0) | |
1884 | goto err_ret; | |
3733e694 | 1885 | data = xmallocz(size); |
e1327023 | 1886 | if (st.st_size != read_in_full(i, data, size)) { |
7645d8f1 | 1887 | error_errno(_("'%s': short read"), filename); |
e1327023 JK |
1888 | close(i); |
1889 | free(data); | |
1890 | return -1; | |
1891 | } | |
1892 | close(i); | |
e1327023 JK |
1893 | |
1894 | gs->buf = data; | |
1895 | gs->size = size; | |
1896 | return 0; | |
1897 | } | |
1898 | ||
3083301e | 1899 | static int grep_source_load(struct grep_source *gs) |
e1327023 JK |
1900 | { |
1901 | if (gs->buf) | |
1902 | return 0; | |
1903 | ||
1904 | switch (gs->type) { | |
1905 | case GREP_SOURCE_FILE: | |
1906 | return grep_source_load_file(gs); | |
1c41c82b BW |
1907 | case GREP_SOURCE_OID: |
1908 | return grep_source_load_oid(gs); | |
e1327023 JK |
1909 | case GREP_SOURCE_BUF: |
1910 | return gs->buf ? 0 : -1; | |
1911 | } | |
033abf97 | 1912 | BUG("invalid grep_source type to load"); |
0ab7befa | 1913 | } |
94ad9d9e | 1914 | |
acd00ea0 NTND |
1915 | void grep_source_load_driver(struct grep_source *gs, |
1916 | struct index_state *istate) | |
94ad9d9e JK |
1917 | { |
1918 | if (gs->driver) | |
1919 | return; | |
1920 | ||
1921 | grep_attr_lock(); | |
1d1729ca | 1922 | if (gs->path) |
acd00ea0 | 1923 | gs->driver = userdiff_find_by_path(istate, gs->path); |
94ad9d9e JK |
1924 | if (!gs->driver) |
1925 | gs->driver = userdiff_find_by_name("default"); | |
1926 | grep_attr_unlock(); | |
1927 | } | |
41b59bfc | 1928 | |
acd00ea0 NTND |
1929 | static int grep_source_is_binary(struct grep_source *gs, |
1930 | struct index_state *istate) | |
41b59bfc | 1931 | { |
acd00ea0 | 1932 | grep_source_load_driver(gs, istate); |
41b59bfc JK |
1933 | if (gs->driver->binary != -1) |
1934 | return gs->driver->binary; | |
1935 | ||
1936 | if (!grep_source_load(gs)) | |
1937 | return buffer_is_binary(gs->buf, gs->size); | |
1938 | ||
1939 | return 0; | |
1940 | } |