1 #include "git-compat-util.h"
6 #include "object-store.h"
9 #include "xdiff-interface.h"
17 static int grep_source_load(struct grep_source
*gs
);
18 static int grep_source_is_binary(struct grep_source
*gs
,
19 struct index_state
*istate
);
21 static void std_output(struct grep_opt
*opt
, const void *buf
, size_t size
)
23 fwrite(buf
, size
, 1, stdout
);
26 static const char *color_grep_slots
[] = {
27 [GREP_COLOR_CONTEXT
] = "context",
28 [GREP_COLOR_FILENAME
] = "filename",
29 [GREP_COLOR_FUNCTION
] = "function",
30 [GREP_COLOR_LINENO
] = "lineNumber",
31 [GREP_COLOR_COLUMNNO
] = "column",
32 [GREP_COLOR_MATCH_CONTEXT
] = "matchContext",
33 [GREP_COLOR_MATCH_SELECTED
] = "matchSelected",
34 [GREP_COLOR_SELECTED
] = "selected",
35 [GREP_COLOR_SEP
] = "separator",
38 static int parse_pattern_type_arg(const char *opt
, const char *arg
)
40 if (!strcmp(arg
, "default"))
41 return GREP_PATTERN_TYPE_UNSPECIFIED
;
42 else if (!strcmp(arg
, "basic"))
43 return GREP_PATTERN_TYPE_BRE
;
44 else if (!strcmp(arg
, "extended"))
45 return GREP_PATTERN_TYPE_ERE
;
46 else if (!strcmp(arg
, "fixed"))
47 return GREP_PATTERN_TYPE_FIXED
;
48 else if (!strcmp(arg
, "perl"))
49 return GREP_PATTERN_TYPE_PCRE
;
50 die("bad %s argument: %s", opt
, arg
);
53 define_list_config_array_extra(color_grep_slots
, {"match"});
56 * Read the configuration file once and store it in
57 * the grep_defaults template.
59 int grep_config(const char *var
, const char *value
,
60 const struct config_context
*ctx
, void *cb
)
62 struct grep_opt
*opt
= cb
;
65 if (userdiff_config(var
, value
) < 0)
68 if (!strcmp(var
, "grep.extendedregexp")) {
69 opt
->extended_regexp_option
= git_config_bool(var
, value
);
73 if (!strcmp(var
, "grep.patterntype")) {
74 opt
->pattern_type_option
= parse_pattern_type_arg(var
, value
);
78 if (!strcmp(var
, "grep.linenumber")) {
79 opt
->linenum
= git_config_bool(var
, value
);
82 if (!strcmp(var
, "grep.column")) {
83 opt
->columnnum
= git_config_bool(var
, value
);
87 if (!strcmp(var
, "grep.fullname")) {
88 opt
->relative
= !git_config_bool(var
, value
);
92 if (!strcmp(var
, "color.grep"))
93 opt
->color
= git_config_colorbool(var
, value
);
94 if (!strcmp(var
, "color.grep.match")) {
95 if (grep_config("color.grep.matchcontext", value
, ctx
, cb
) < 0)
97 if (grep_config("color.grep.matchselected", value
, ctx
, cb
) < 0)
99 } else if (skip_prefix(var
, "color.grep.", &slot
)) {
100 int i
= LOOKUP_CONFIG(color_grep_slots
, slot
);
105 color
= opt
->colors
[i
];
107 return config_error_nonbool(var
);
108 return color_parse(value
, color
);
113 void grep_init(struct grep_opt
*opt
, struct repository
*repo
)
115 struct grep_opt blank
= GREP_OPT_INIT
;
116 memcpy(opt
, &blank
, sizeof(*opt
));
119 opt
->pattern_tail
= &opt
->pattern_list
;
120 opt
->header_tail
= &opt
->header_list
;
123 static struct grep_pat
*create_grep_pat(const char *pat
, size_t patlen
,
124 const char *origin
, int no
,
125 enum grep_pat_token t
,
126 enum grep_header_field field
)
128 struct grep_pat
*p
= xcalloc(1, sizeof(*p
));
129 p
->pattern
= xmemdupz(pat
, patlen
);
130 p
->patternlen
= patlen
;
138 static void do_append_grep_pat(struct grep_pat
***tail
, struct grep_pat
*p
)
145 case GREP_PATTERN
: /* atom */
146 case GREP_PATTERN_HEAD
:
147 case GREP_PATTERN_BODY
:
149 struct grep_pat
*new_pat
;
151 char *cp
= p
->pattern
+ p
->patternlen
, *nl
= NULL
;
152 while (++len
<= p
->patternlen
) {
153 if (*(--cp
) == '\n') {
160 new_pat
= create_grep_pat(nl
+ 1, len
- 1, p
->origin
,
161 p
->no
, p
->token
, p
->field
);
162 new_pat
->next
= p
->next
;
164 *tail
= &new_pat
->next
;
167 p
->patternlen
-= len
;
175 void append_header_grep_pattern(struct grep_opt
*opt
,
176 enum grep_header_field field
, const char *pat
)
178 struct grep_pat
*p
= create_grep_pat(pat
, strlen(pat
), "header", 0,
179 GREP_PATTERN_HEAD
, field
);
180 if (field
== GREP_HEADER_REFLOG
)
181 opt
->use_reflog_filter
= 1;
182 do_append_grep_pat(&opt
->header_tail
, p
);
185 void append_grep_pattern(struct grep_opt
*opt
, const char *pat
,
186 const char *origin
, int no
, enum grep_pat_token t
)
188 append_grep_pat(opt
, pat
, strlen(pat
), origin
, no
, t
);
191 void append_grep_pat(struct grep_opt
*opt
, const char *pat
, size_t patlen
,
192 const char *origin
, int no
, enum grep_pat_token t
)
194 struct grep_pat
*p
= create_grep_pat(pat
, patlen
, origin
, no
, t
, 0);
195 do_append_grep_pat(&opt
->pattern_tail
, p
);
198 struct grep_opt
*grep_opt_dup(const struct grep_opt
*opt
)
200 struct grep_pat
*pat
;
201 struct grep_opt
*ret
= xmalloc(sizeof(struct grep_opt
));
204 ret
->pattern_list
= NULL
;
205 ret
->pattern_tail
= &ret
->pattern_list
;
207 for(pat
= opt
->pattern_list
; pat
!= NULL
; pat
= pat
->next
)
209 if(pat
->token
== GREP_PATTERN_HEAD
)
210 append_header_grep_pattern(ret
, pat
->field
,
213 append_grep_pat(ret
, pat
->pattern
, pat
->patternlen
,
214 pat
->origin
, pat
->no
, pat
->token
);
220 static NORETURN
void compile_regexp_failed(const struct grep_pat
*p
,
226 xsnprintf(where
, sizeof(where
), "In '%s' at %d, ", p
->origin
, p
->no
);
228 xsnprintf(where
, sizeof(where
), "%s, ", p
->origin
);
232 die("%s'%s': %s", where
, p
->pattern
, error
);
235 static int is_fixed(const char *s
, size_t len
)
239 for (i
= 0; i
< len
; i
++) {
240 if (is_regex_special(s
[i
]))
248 #define GREP_PCRE2_DEBUG_MALLOC 0
250 static void *pcre2_malloc(PCRE2_SIZE size
, MAYBE_UNUSED
void *memory_data
)
252 void *pointer
= malloc(size
);
253 #if GREP_PCRE2_DEBUG_MALLOC
254 static int count
= 1;
255 fprintf(stderr
, "PCRE2:%p -> #%02d: alloc(%lu)\n", pointer
, count
++, size
);
260 static void pcre2_free(void *pointer
, MAYBE_UNUSED
void *memory_data
)
262 #if GREP_PCRE2_DEBUG_MALLOC
263 static int count
= 1;
265 fprintf(stderr
, "PCRE2:%p -> #%02d: free()\n", pointer
, count
++);
270 static int pcre2_jit_functional(void)
272 static int jit_working
= -1;
277 if (jit_working
!= -1)
281 * Try to JIT compile a simple pattern to probe if the JIT is
282 * working in general. It might fail for systems where creating
283 * memory mappings for runtime code generation is restricted.
285 code
= pcre2_compile((PCRE2_SPTR
)".", 1, 0, &err
, &off
, NULL
);
289 jit_working
= pcre2_jit_compile(code
, PCRE2_JIT_COMPLETE
) == 0;
290 pcre2_code_free(code
);
295 static void compile_pcre2_pattern(struct grep_pat
*p
, const struct grep_opt
*opt
)
298 PCRE2_UCHAR errbuf
[256];
299 PCRE2_SIZE erroffset
;
300 int options
= PCRE2_MULTILINE
;
304 int literal
= !opt
->ignore_case
&& (p
->fixed
|| p
->is_fixed
);
307 * Call pcre2_general_context_create() before calling any
308 * other pcre2_*(). It sets up our malloc()/free() functions
309 * with which everything else is allocated.
311 p
->pcre2_general_context
= pcre2_general_context_create(
312 pcre2_malloc
, pcre2_free
, NULL
);
313 if (!p
->pcre2_general_context
)
314 die("Couldn't allocate PCRE2 general context");
316 if (opt
->ignore_case
) {
317 if (!opt
->ignore_locale
&& has_non_ascii(p
->pattern
)) {
318 p
->pcre2_tables
= pcre2_maketables(p
->pcre2_general_context
);
319 p
->pcre2_compile_context
= pcre2_compile_context_create(p
->pcre2_general_context
);
320 pcre2_set_character_tables(p
->pcre2_compile_context
,
323 options
|= PCRE2_CASELESS
;
325 if (!opt
->ignore_locale
&& is_utf8_locale() && !literal
)
326 options
|= (PCRE2_UTF
| PCRE2_UCP
| PCRE2_MATCH_INVALID_UTF
);
328 #ifndef GIT_PCRE2_VERSION_10_35_OR_HIGHER
330 * Work around a JIT bug related to invalid Unicode character handling
332 * https://github.com/PCRE2Project/pcre2/commit/c21bd977547d
334 options
&= ~PCRE2_UCP
;
337 #ifndef GIT_PCRE2_VERSION_10_36_OR_HIGHER
338 /* Work around https://bugs.exim.org/show_bug.cgi?id=2642 fixed in 10.36 */
339 if (PCRE2_MATCH_INVALID_UTF
&& options
& (PCRE2_UTF
| PCRE2_CASELESS
))
340 options
|= PCRE2_NO_START_OPTIMIZE
;
343 p
->pcre2_pattern
= pcre2_compile((PCRE2_SPTR
)p
->pattern
,
344 p
->patternlen
, options
, &error
, &erroffset
,
345 p
->pcre2_compile_context
);
347 if (p
->pcre2_pattern
) {
348 p
->pcre2_match_data
= pcre2_match_data_create_from_pattern(p
->pcre2_pattern
, p
->pcre2_general_context
);
349 if (!p
->pcre2_match_data
)
350 die("Couldn't allocate PCRE2 match data");
352 pcre2_get_error_message(error
, errbuf
, sizeof(errbuf
));
353 compile_regexp_failed(p
, (const char *)&errbuf
);
356 pcre2_config(PCRE2_CONFIG_JIT
, &p
->pcre2_jit_on
);
357 if (p
->pcre2_jit_on
) {
358 jitret
= pcre2_jit_compile(p
->pcre2_pattern
, PCRE2_JIT_COMPLETE
);
359 if (jitret
== PCRE2_ERROR_NOMEMORY
&& !pcre2_jit_functional()) {
361 * Even though pcre2_config(PCRE2_CONFIG_JIT, ...)
362 * indicated JIT support, the library might still
363 * fail to generate JIT code for various reasons,
364 * e.g. when SELinux's 'deny_execmem' or PaX's
365 * MPROTECT prevent creating W|X memory mappings.
367 * Instead of faling hard, fall back to interpreter
368 * mode, just as if the pattern was prefixed with
374 int need_clip
= p
->patternlen
> 64;
375 int clip_len
= need_clip
? 64 : p
->patternlen
;
376 die("Couldn't JIT the PCRE2 pattern '%.*s'%s, got '%d'%s",
377 clip_len
, p
->pattern
, need_clip
? "..." : "", jitret
,
378 pcre2_jit_functional()
379 ? "\nPerhaps prefix (*NO_JIT) to your pattern?"
384 * The pcre2_config(PCRE2_CONFIG_JIT, ...) call just
385 * tells us whether the library itself supports JIT,
386 * but to see whether we're going to be actually using
387 * JIT we need to extract PCRE2_INFO_JITSIZE from the
388 * pattern *after* we do pcre2_jit_compile() above.
390 * This is because if the pattern contains the
391 * (*NO_JIT) verb (see pcre2syntax(3))
392 * pcre2_jit_compile() will exit early with 0. If we
393 * then proceed to call pcre2_jit_match() further down
394 * the line instead of pcre2_match() we'll either
395 * segfault (pre PCRE 10.31) or run into a fatal error
398 patinforet
= pcre2_pattern_info(p
->pcre2_pattern
, PCRE2_INFO_JITSIZE
, &jitsizearg
);
400 BUG("pcre2_pattern_info() failed: %d", patinforet
);
401 if (jitsizearg
== 0) {
408 static int pcre2match(struct grep_pat
*p
, const char *line
, const char *eol
,
409 regmatch_t
*match
, int eflags
)
413 PCRE2_UCHAR errbuf
[256];
415 if (eflags
& REG_NOTBOL
)
416 flags
|= PCRE2_NOTBOL
;
419 ret
= pcre2_jit_match(p
->pcre2_pattern
, (unsigned char *)line
,
420 eol
- line
, 0, flags
, p
->pcre2_match_data
,
423 ret
= pcre2_match(p
->pcre2_pattern
, (unsigned char *)line
,
424 eol
- line
, 0, flags
, p
->pcre2_match_data
,
427 if (ret
< 0 && ret
!= PCRE2_ERROR_NOMATCH
) {
428 pcre2_get_error_message(ret
, errbuf
, sizeof(errbuf
));
429 die("%s failed with error code %d: %s",
430 (p
->pcre2_jit_on
? "pcre2_jit_match" : "pcre2_match"), ret
,
434 ovector
= pcre2_get_ovector_pointer(p
->pcre2_match_data
);
436 match
->rm_so
= (int)ovector
[0];
437 match
->rm_eo
= (int)ovector
[1];
443 static void free_pcre2_pattern(struct grep_pat
*p
)
445 pcre2_compile_context_free(p
->pcre2_compile_context
);
446 pcre2_code_free(p
->pcre2_pattern
);
447 pcre2_match_data_free(p
->pcre2_match_data
);
448 #ifdef GIT_PCRE2_VERSION_10_34_OR_HIGHER
449 pcre2_maketables_free(p
->pcre2_general_context
, p
->pcre2_tables
);
451 free((void *)p
->pcre2_tables
);
453 pcre2_general_context_free(p
->pcre2_general_context
);
455 #else /* !USE_LIBPCRE2 */
456 static void compile_pcre2_pattern(struct grep_pat
*p
, const struct grep_opt
*opt
)
458 die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE");
461 static int pcre2match(struct grep_pat
*p
, const char *line
, const char *eol
,
462 regmatch_t
*match
, int eflags
)
467 static void free_pcre2_pattern(struct grep_pat
*p
)
471 static void compile_fixed_regexp(struct grep_pat
*p
, struct grep_opt
*opt
)
473 struct strbuf sb
= STRBUF_INIT
;
477 basic_regex_quote_buf(&sb
, p
->pattern
);
478 if (opt
->ignore_case
)
479 regflags
|= REG_ICASE
;
480 err
= regcomp(&p
->regexp
, sb
.buf
, regflags
);
484 regerror(err
, &p
->regexp
, errbuf
, sizeof(errbuf
));
485 compile_regexp_failed(p
, errbuf
);
488 #endif /* !USE_LIBPCRE2 */
490 static void compile_regexp(struct grep_pat
*p
, struct grep_opt
*opt
)
493 int regflags
= REG_NEWLINE
;
495 if (opt
->pattern_type_option
== GREP_PATTERN_TYPE_UNSPECIFIED
)
496 opt
->pattern_type_option
= (opt
->extended_regexp_option
497 ? GREP_PATTERN_TYPE_ERE
498 : GREP_PATTERN_TYPE_BRE
);
500 p
->word_regexp
= opt
->word_regexp
;
501 p
->ignore_case
= opt
->ignore_case
;
502 p
->fixed
= opt
->pattern_type_option
== GREP_PATTERN_TYPE_FIXED
;
504 if (opt
->pattern_type_option
!= GREP_PATTERN_TYPE_PCRE
&&
505 memchr(p
->pattern
, 0, p
->patternlen
))
506 die(_("given pattern contains NULL byte (via -f <file>). This is only supported with -P under PCRE v2"));
508 p
->is_fixed
= is_fixed(p
->pattern
, p
->patternlen
);
510 if (!p
->fixed
&& !p
->is_fixed
) {
511 const char *no_jit
= "(*NO_JIT)";
512 const int no_jit_len
= strlen(no_jit
);
513 if (starts_with(p
->pattern
, no_jit
) &&
514 is_fixed(p
->pattern
+ no_jit_len
,
515 p
->patternlen
- no_jit_len
))
519 if (p
->fixed
|| p
->is_fixed
) {
522 compile_pcre2_pattern(p
, opt
);
525 * E.g. t7811-grep-open.sh relies on the
526 * pattern being restored.
528 char *old_pattern
= p
->pattern
;
529 size_t old_patternlen
= p
->patternlen
;
530 struct strbuf sb
= STRBUF_INIT
;
533 * There is the PCRE2_LITERAL flag, but it's
534 * only in PCRE v2 10.30 and later. Needing to
535 * ifdef our way around that and dealing with
536 * it + PCRE2_MULTILINE being an error is more
537 * complex than just quoting this ourselves.
539 strbuf_add(&sb
, "\\Q", 2);
540 strbuf_add(&sb
, p
->pattern
, p
->patternlen
);
541 strbuf_add(&sb
, "\\E", 2);
544 p
->patternlen
= sb
.len
;
545 compile_pcre2_pattern(p
, opt
);
546 p
->pattern
= old_pattern
;
547 p
->patternlen
= old_patternlen
;
550 #else /* !USE_LIBPCRE2 */
551 compile_fixed_regexp(p
, opt
);
552 #endif /* !USE_LIBPCRE2 */
556 if (opt
->pattern_type_option
== GREP_PATTERN_TYPE_PCRE
) {
557 compile_pcre2_pattern(p
, opt
);
562 regflags
|= REG_ICASE
;
563 if (opt
->pattern_type_option
== GREP_PATTERN_TYPE_ERE
)
564 regflags
|= REG_EXTENDED
;
565 err
= regcomp(&p
->regexp
, p
->pattern
, regflags
);
568 regerror(err
, &p
->regexp
, errbuf
, 1024);
569 compile_regexp_failed(p
, errbuf
);
573 static struct grep_expr
*grep_not_expr(struct grep_expr
*expr
)
575 struct grep_expr
*z
= xcalloc(1, sizeof(*z
));
576 z
->node
= GREP_NODE_NOT
;
581 static struct grep_expr
*grep_binexp(enum grep_expr_node kind
,
582 struct grep_expr
*left
,
583 struct grep_expr
*right
)
585 struct grep_expr
*z
= xcalloc(1, sizeof(*z
));
587 z
->u
.binary
.left
= left
;
588 z
->u
.binary
.right
= right
;
592 static struct grep_expr
*grep_or_expr(struct grep_expr
*left
, struct grep_expr
*right
)
594 return grep_binexp(GREP_NODE_OR
, left
, right
);
597 static struct grep_expr
*grep_and_expr(struct grep_expr
*left
, struct grep_expr
*right
)
599 return grep_binexp(GREP_NODE_AND
, left
, right
);
602 static struct grep_expr
*compile_pattern_or(struct grep_pat
**);
603 static struct grep_expr
*compile_pattern_atom(struct grep_pat
**list
)
612 case GREP_PATTERN
: /* atom */
613 case GREP_PATTERN_HEAD
:
614 case GREP_PATTERN_BODY
:
616 x
->node
= GREP_NODE_ATOM
;
620 case GREP_OPEN_PAREN
:
622 x
= compile_pattern_or(list
);
623 if (!*list
|| (*list
)->token
!= GREP_CLOSE_PAREN
)
624 die("unmatched parenthesis");
625 *list
= (*list
)->next
;
632 static struct grep_expr
*compile_pattern_not(struct grep_pat
**list
)
643 die("--not not followed by pattern expression");
645 x
= compile_pattern_not(list
);
647 die("--not followed by non pattern expression");
648 return grep_not_expr(x
);
650 return compile_pattern_atom(list
);
654 static struct grep_expr
*compile_pattern_and(struct grep_pat
**list
)
657 struct grep_expr
*x
, *y
;
659 x
= compile_pattern_not(list
);
661 if (p
&& p
->token
== GREP_AND
) {
663 die("--and not preceded by pattern expression");
665 die("--and not followed by pattern expression");
667 y
= compile_pattern_and(list
);
669 die("--and not followed by pattern expression");
670 return grep_and_expr(x
, y
);
675 static struct grep_expr
*compile_pattern_or(struct grep_pat
**list
)
678 struct grep_expr
*x
, *y
;
680 x
= compile_pattern_and(list
);
682 if (x
&& p
&& p
->token
!= GREP_CLOSE_PAREN
) {
683 y
= compile_pattern_or(list
);
685 die("not a pattern expression %s", p
->pattern
);
686 return grep_or_expr(x
, y
);
691 static struct grep_expr
*compile_pattern_expr(struct grep_pat
**list
)
693 return compile_pattern_or(list
);
696 static struct grep_expr
*grep_true_expr(void)
698 struct grep_expr
*z
= xcalloc(1, sizeof(*z
));
699 z
->node
= GREP_NODE_TRUE
;
703 static struct grep_expr
*prep_header_patterns(struct grep_opt
*opt
)
706 struct grep_expr
*header_expr
;
707 struct grep_expr
*(header_group
[GREP_HEADER_FIELD_MAX
]);
708 enum grep_header_field fld
;
710 if (!opt
->header_list
)
713 for (p
= opt
->header_list
; p
; p
= p
->next
) {
714 if (p
->token
!= GREP_PATTERN_HEAD
)
715 BUG("a non-header pattern in grep header list.");
716 if (p
->field
< GREP_HEADER_FIELD_MIN
||
717 GREP_HEADER_FIELD_MAX
<= p
->field
)
718 BUG("unknown header field %d", p
->field
);
719 compile_regexp(p
, opt
);
722 for (fld
= 0; fld
< GREP_HEADER_FIELD_MAX
; fld
++)
723 header_group
[fld
] = NULL
;
725 for (p
= opt
->header_list
; p
; p
= p
->next
) {
727 struct grep_pat
*pp
= p
;
729 h
= compile_pattern_atom(&pp
);
730 if (!h
|| pp
!= p
->next
)
731 BUG("malformed header expr");
732 if (!header_group
[p
->field
]) {
733 header_group
[p
->field
] = h
;
736 header_group
[p
->field
] = grep_or_expr(h
, header_group
[p
->field
]);
741 for (fld
= 0; fld
< GREP_HEADER_FIELD_MAX
; fld
++) {
742 if (!header_group
[fld
])
745 header_expr
= grep_true_expr();
746 header_expr
= grep_or_expr(header_group
[fld
], header_expr
);
751 static struct grep_expr
*grep_splice_or(struct grep_expr
*x
, struct grep_expr
*y
)
753 struct grep_expr
*z
= x
;
756 assert(x
->node
== GREP_NODE_OR
);
757 if (x
->u
.binary
.right
&&
758 x
->u
.binary
.right
->node
== GREP_NODE_TRUE
) {
759 x
->u
.binary
.right
= y
;
762 x
= x
->u
.binary
.right
;
767 void compile_grep_patterns(struct grep_opt
*opt
)
770 struct grep_expr
*header_expr
= prep_header_patterns(opt
);
773 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
775 case GREP_PATTERN
: /* atom */
776 case GREP_PATTERN_HEAD
:
777 case GREP_PATTERN_BODY
:
778 compile_regexp(p
, opt
);
786 if (opt
->all_match
|| opt
->no_body_match
|| header_expr
)
791 p
= opt
->pattern_list
;
793 opt
->pattern_expression
= compile_pattern_expr(&p
);
795 die("incomplete pattern expression: %s", p
->pattern
);
797 if (opt
->no_body_match
&& opt
->pattern_expression
)
798 opt
->pattern_expression
= grep_not_expr(opt
->pattern_expression
);
803 if (!opt
->pattern_expression
)
804 opt
->pattern_expression
= header_expr
;
805 else if (opt
->all_match
)
806 opt
->pattern_expression
= grep_splice_or(header_expr
,
807 opt
->pattern_expression
);
809 opt
->pattern_expression
= grep_or_expr(opt
->pattern_expression
,
814 static void free_pattern_expr(struct grep_expr
*x
)
821 free_pattern_expr(x
->u
.unary
);
825 free_pattern_expr(x
->u
.binary
.left
);
826 free_pattern_expr(x
->u
.binary
.right
);
832 static void free_grep_pat(struct grep_pat
*pattern
)
834 struct grep_pat
*p
, *n
;
836 for (p
= pattern
; p
; p
= n
) {
839 case GREP_PATTERN
: /* atom */
840 case GREP_PATTERN_HEAD
:
841 case GREP_PATTERN_BODY
:
842 if (p
->pcre2_pattern
)
843 free_pcre2_pattern(p
);
855 void free_grep_patterns(struct grep_opt
*opt
)
857 free_grep_pat(opt
->pattern_list
);
858 free_grep_pat(opt
->header_list
);
860 if (opt
->pattern_expression
)
861 free_pattern_expr(opt
->pattern_expression
);
864 static const char *end_of_line(const char *cp
, unsigned long *left
)
866 unsigned long l
= *left
;
867 while (l
&& *cp
!= '\n') {
875 static int word_char(char ch
)
877 return isalnum(ch
) || ch
== '_';
880 static void output_color(struct grep_opt
*opt
, const void *data
, size_t size
,
883 if (want_color(opt
->color
) && color
&& color
[0]) {
884 opt
->output(opt
, color
, strlen(color
));
885 opt
->output(opt
, data
, size
);
886 opt
->output(opt
, GIT_COLOR_RESET
, strlen(GIT_COLOR_RESET
));
888 opt
->output(opt
, data
, size
);
891 static void output_sep(struct grep_opt
*opt
, char sign
)
893 if (opt
->null_following_name
)
894 opt
->output(opt
, "\0", 1);
896 output_color(opt
, &sign
, 1, opt
->colors
[GREP_COLOR_SEP
]);
899 static void show_name(struct grep_opt
*opt
, const char *name
)
901 output_color(opt
, name
, strlen(name
), opt
->colors
[GREP_COLOR_FILENAME
]);
902 opt
->output(opt
, opt
->null_following_name
? "\0" : "\n", 1);
905 static int patmatch(struct grep_pat
*p
,
906 const char *line
, const char *eol
,
907 regmatch_t
*match
, int eflags
)
911 if (p
->pcre2_pattern
)
912 hit
= !pcre2match(p
, line
, eol
, match
, eflags
);
914 hit
= !regexec_buf(&p
->regexp
, line
, eol
- line
, 1, match
,
920 static void strip_timestamp(const char *bol
, const char **eol_p
)
922 const char *eol
= *eol_p
;
924 while (bol
< --eol
) {
937 { "committer ", 10 },
941 static int headerless_match_one_pattern(struct grep_pat
*p
,
942 const char *bol
, const char *eol
,
943 enum grep_context ctx
,
944 regmatch_t
*pmatch
, int eflags
)
947 const char *start
= bol
;
949 if ((p
->token
!= GREP_PATTERN
) &&
950 ((p
->token
== GREP_PATTERN_HEAD
) != (ctx
== GREP_CONTEXT_HEAD
)))
954 hit
= patmatch(p
, bol
, eol
, pmatch
, eflags
);
956 if (hit
&& p
->word_regexp
) {
957 if ((pmatch
[0].rm_so
< 0) ||
958 (eol
- bol
) < pmatch
[0].rm_so
||
959 (pmatch
[0].rm_eo
< 0) ||
960 (eol
- bol
) < pmatch
[0].rm_eo
)
961 die("regexp returned nonsense");
963 /* Match beginning must be either beginning of the
964 * line, or at word boundary (i.e. the last char must
965 * not be a word char). Similarly, match end must be
966 * either end of the line, or at word boundary
967 * (i.e. the next char must not be a word char).
969 if ( ((pmatch
[0].rm_so
== 0) ||
970 !word_char(bol
[pmatch
[0].rm_so
-1])) &&
971 ((pmatch
[0].rm_eo
== (eol
-bol
)) ||
972 !word_char(bol
[pmatch
[0].rm_eo
])) )
977 /* Words consist of at least one character. */
978 if (pmatch
->rm_so
== pmatch
->rm_eo
)
981 if (!hit
&& pmatch
[0].rm_so
+ bol
+ 1 < eol
) {
982 /* There could be more than one match on the
983 * line, and the first match might not be
984 * strict word match. But later ones could be!
985 * Forward to the next possible start, i.e. the
986 * next position following a non-word char.
988 bol
= pmatch
[0].rm_so
+ bol
+ 1;
989 while (word_char(bol
[-1]) && bol
< eol
)
991 eflags
|= REG_NOTBOL
;
997 pmatch
[0].rm_so
+= bol
- start
;
998 pmatch
[0].rm_eo
+= bol
- start
;
1003 static int match_one_pattern(struct grep_pat
*p
,
1004 const char *bol
, const char *eol
,
1005 enum grep_context ctx
, regmatch_t
*pmatch
,
1011 if (p
->token
== GREP_PATTERN_HEAD
) {
1012 assert(p
->field
< ARRAY_SIZE(header_field
));
1013 field
= header_field
[p
->field
].field
;
1014 len
= header_field
[p
->field
].len
;
1015 if (strncmp(bol
, field
, len
))
1020 case GREP_HEADER_AUTHOR
:
1021 case GREP_HEADER_COMMITTER
:
1022 strip_timestamp(bol
, &eol
);
1029 return headerless_match_one_pattern(p
, bol
, eol
, ctx
, pmatch
, eflags
);
1033 static int match_expr_eval(struct grep_opt
*opt
, struct grep_expr
*x
,
1034 const char *bol
, const char *eol
,
1035 enum grep_context ctx
, ssize_t
*col
,
1036 ssize_t
*icol
, int collect_hits
)
1041 case GREP_NODE_TRUE
:
1044 case GREP_NODE_ATOM
:
1047 h
= match_one_pattern(x
->u
.atom
, bol
, eol
, ctx
,
1049 if (h
&& (*col
< 0 || tmp
.rm_so
< *col
))
1052 if (x
->u
.atom
->token
== GREP_PATTERN_BODY
)
1057 * Upon visiting a GREP_NODE_NOT, col and icol become swapped.
1059 h
= !match_expr_eval(opt
, x
->u
.unary
, bol
, eol
, ctx
, icol
, col
,
1063 h
= match_expr_eval(opt
, x
->u
.binary
.left
, bol
, eol
, ctx
, col
,
1065 if (h
|| opt
->columnnum
) {
1067 * Don't short-circuit AND when given --column, since a
1068 * NOT earlier in the tree may turn this into an OR. In
1069 * this case, see the below comment.
1071 h
&= match_expr_eval(opt
, x
->u
.binary
.right
, bol
, eol
,
1076 if (!(collect_hits
|| opt
->columnnum
)) {
1078 * Don't short-circuit OR when given --column (or
1079 * collecting hits) to ensure we don't skip a later
1080 * child that would produce an earlier match.
1082 return (match_expr_eval(opt
, x
->u
.binary
.left
, bol
, eol
,
1083 ctx
, col
, icol
, 0) ||
1084 match_expr_eval(opt
, x
->u
.binary
.right
, bol
,
1085 eol
, ctx
, col
, icol
, 0));
1087 h
= match_expr_eval(opt
, x
->u
.binary
.left
, bol
, eol
, ctx
, col
,
1090 x
->u
.binary
.left
->hit
|= h
;
1091 h
|= match_expr_eval(opt
, x
->u
.binary
.right
, bol
, eol
, ctx
, col
,
1092 icol
, collect_hits
);
1095 die("Unexpected node type (internal error) %d", x
->node
);
1102 static int match_expr(struct grep_opt
*opt
,
1103 const char *bol
, const char *eol
,
1104 enum grep_context ctx
, ssize_t
*col
,
1105 ssize_t
*icol
, int collect_hits
)
1107 struct grep_expr
*x
= opt
->pattern_expression
;
1108 return match_expr_eval(opt
, x
, bol
, eol
, ctx
, col
, icol
, collect_hits
);
1111 static int match_line(struct grep_opt
*opt
,
1112 const char *bol
, const char *eol
,
1113 ssize_t
*col
, ssize_t
*icol
,
1114 enum grep_context ctx
, int collect_hits
)
1119 if (opt
->pattern_expression
)
1120 return match_expr(opt
, bol
, eol
, ctx
, col
, icol
,
1123 /* we do not call with collect_hits without being extended */
1124 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
1126 if (match_one_pattern(p
, bol
, eol
, ctx
, &tmp
, 0)) {
1128 if (!opt
->columnnum
) {
1130 * Without --column, any single match on a line
1131 * is enough to know that it needs to be
1132 * printed. With --column, scan _all_ patterns
1133 * to find the earliest.
1137 if (*col
< 0 || tmp
.rm_so
< *col
)
1144 static int match_next_pattern(struct grep_pat
*p
,
1145 const char *bol
, const char *eol
,
1146 enum grep_context ctx
,
1147 regmatch_t
*pmatch
, int eflags
)
1151 if (!headerless_match_one_pattern(p
, bol
, eol
, ctx
, &match
, eflags
))
1153 if (match
.rm_so
< 0 || match
.rm_eo
< 0)
1155 if (pmatch
->rm_so
>= 0 && pmatch
->rm_eo
>= 0) {
1156 if (match
.rm_so
> pmatch
->rm_so
)
1158 if (match
.rm_so
== pmatch
->rm_so
&& match
.rm_eo
< pmatch
->rm_eo
)
1161 pmatch
->rm_so
= match
.rm_so
;
1162 pmatch
->rm_eo
= match
.rm_eo
;
1166 int grep_next_match(struct grep_opt
*opt
,
1167 const char *bol
, const char *eol
,
1168 enum grep_context ctx
, regmatch_t
*pmatch
,
1169 enum grep_header_field field
, int eflags
)
1174 pmatch
->rm_so
= pmatch
->rm_eo
= -1;
1176 for (p
= ((ctx
== GREP_CONTEXT_HEAD
)
1177 ? opt
->header_list
: opt
->pattern_list
);
1180 case GREP_PATTERN_HEAD
:
1181 if ((field
!= GREP_HEADER_FIELD_MAX
) &&
1182 (p
->field
!= field
))
1185 case GREP_PATTERN
: /* atom */
1186 case GREP_PATTERN_BODY
:
1187 hit
|= match_next_pattern(p
, bol
, eol
, ctx
,
1198 static void show_line_header(struct grep_opt
*opt
, const char *name
,
1199 unsigned lno
, ssize_t cno
, char sign
)
1201 if (opt
->heading
&& opt
->last_shown
== 0) {
1202 output_color(opt
, name
, strlen(name
), opt
->colors
[GREP_COLOR_FILENAME
]);
1203 opt
->output(opt
, "\n", 1);
1205 opt
->last_shown
= lno
;
1207 if (!opt
->heading
&& opt
->pathname
) {
1208 output_color(opt
, name
, strlen(name
), opt
->colors
[GREP_COLOR_FILENAME
]);
1209 output_sep(opt
, sign
);
1213 xsnprintf(buf
, sizeof(buf
), "%d", lno
);
1214 output_color(opt
, buf
, strlen(buf
), opt
->colors
[GREP_COLOR_LINENO
]);
1215 output_sep(opt
, sign
);
1218 * Treat 'cno' as the 1-indexed offset from the start of a non-context
1219 * line to its first match. Otherwise, 'cno' is 0 indicating that we are
1220 * being called with a context line.
1222 if (opt
->columnnum
&& cno
) {
1224 xsnprintf(buf
, sizeof(buf
), "%"PRIuMAX
, (uintmax_t)cno
);
1225 output_color(opt
, buf
, strlen(buf
), opt
->colors
[GREP_COLOR_COLUMNNO
]);
1226 output_sep(opt
, sign
);
1230 static void show_line(struct grep_opt
*opt
,
1231 const char *bol
, const char *eol
,
1232 const char *name
, unsigned lno
, ssize_t cno
, char sign
)
1234 int rest
= eol
- bol
;
1235 const char *match_color
= NULL
;
1236 const char *line_color
= NULL
;
1238 if (opt
->file_break
&& opt
->last_shown
== 0) {
1239 if (opt
->show_hunk_mark
)
1240 opt
->output(opt
, "\n", 1);
1241 } else if (opt
->pre_context
|| opt
->post_context
|| opt
->funcbody
) {
1242 if (opt
->last_shown
== 0) {
1243 if (opt
->show_hunk_mark
) {
1244 output_color(opt
, "--", 2, opt
->colors
[GREP_COLOR_SEP
]);
1245 opt
->output(opt
, "\n", 1);
1247 } else if (lno
> opt
->last_shown
+ 1) {
1248 output_color(opt
, "--", 2, opt
->colors
[GREP_COLOR_SEP
]);
1249 opt
->output(opt
, "\n", 1);
1252 if (!opt
->only_matching
) {
1254 * In case the line we're being called with contains more than
1255 * one match, leave printing each header to the loop below.
1257 show_line_header(opt
, name
, lno
, cno
, sign
);
1259 if (opt
->color
|| opt
->only_matching
) {
1261 enum grep_context ctx
= GREP_CONTEXT_BODY
;
1266 match_color
= opt
->colors
[GREP_COLOR_MATCH_SELECTED
];
1268 match_color
= opt
->colors
[GREP_COLOR_MATCH_CONTEXT
];
1270 line_color
= opt
->colors
[GREP_COLOR_SELECTED
];
1271 else if (sign
== '-')
1272 line_color
= opt
->colors
[GREP_COLOR_CONTEXT
];
1273 else if (sign
== '=')
1274 line_color
= opt
->colors
[GREP_COLOR_FUNCTION
];
1276 while (grep_next_match(opt
, bol
, eol
, ctx
, &match
,
1277 GREP_HEADER_FIELD_MAX
, eflags
)) {
1278 if (match
.rm_so
== match
.rm_eo
)
1281 if (opt
->only_matching
)
1282 show_line_header(opt
, name
, lno
, cno
, sign
);
1284 output_color(opt
, bol
, match
.rm_so
, line_color
);
1285 output_color(opt
, bol
+ match
.rm_so
,
1286 match
.rm_eo
- match
.rm_so
, match_color
);
1287 if (opt
->only_matching
)
1288 opt
->output(opt
, "\n", 1);
1291 rest
-= match
.rm_eo
;
1292 eflags
= REG_NOTBOL
;
1295 if (!opt
->only_matching
) {
1296 output_color(opt
, bol
, rest
, line_color
);
1297 opt
->output(opt
, "\n", 1);
1304 * This lock protects access to the gitattributes machinery, which is
1307 pthread_mutex_t grep_attr_mutex
;
1309 static inline void grep_attr_lock(void)
1312 pthread_mutex_lock(&grep_attr_mutex
);
1315 static inline void grep_attr_unlock(void)
1318 pthread_mutex_unlock(&grep_attr_mutex
);
1321 static int match_funcname(struct grep_opt
*opt
, struct grep_source
*gs
,
1322 const char *bol
, const char *eol
)
1324 xdemitconf_t
*xecfg
= opt
->priv
;
1325 if (xecfg
&& !xecfg
->find_func
) {
1326 grep_source_load_driver(gs
, opt
->repo
->index
);
1327 if (gs
->driver
->funcname
.pattern
) {
1328 const struct userdiff_funcname
*pe
= &gs
->driver
->funcname
;
1329 xdiff_set_find_func(xecfg
, pe
->pattern
, pe
->cflags
);
1331 xecfg
= opt
->priv
= NULL
;
1337 return xecfg
->find_func(bol
, eol
- bol
, buf
, 1,
1338 xecfg
->find_func_priv
) >= 0;
1343 if (isalpha(*bol
) || *bol
== '_' || *bol
== '$')
1348 static void show_funcname_line(struct grep_opt
*opt
, struct grep_source
*gs
,
1349 const char *bol
, unsigned lno
)
1351 while (bol
> gs
->buf
) {
1352 const char *eol
= --bol
;
1354 while (bol
> gs
->buf
&& bol
[-1] != '\n')
1358 if (lno
<= opt
->last_shown
)
1361 if (match_funcname(opt
, gs
, bol
, eol
)) {
1362 show_line(opt
, bol
, eol
, gs
->name
, lno
, 0, '=');
1368 static int is_empty_line(const char *bol
, const char *eol
);
1370 static void show_pre_context(struct grep_opt
*opt
, struct grep_source
*gs
,
1371 const char *bol
, const char *end
, unsigned lno
)
1373 unsigned cur
= lno
, from
= 1, funcname_lno
= 0, orig_from
;
1374 int funcname_needed
= !!opt
->funcname
, comment_needed
= 0;
1376 if (opt
->pre_context
< lno
)
1377 from
= lno
- opt
->pre_context
;
1378 if (from
<= opt
->last_shown
)
1379 from
= opt
->last_shown
+ 1;
1381 if (opt
->funcbody
) {
1382 if (match_funcname(opt
, gs
, bol
, end
))
1385 funcname_needed
= 1;
1386 from
= opt
->last_shown
+ 1;
1390 while (bol
> gs
->buf
&& cur
> from
) {
1391 const char *next_bol
= bol
;
1392 const char *eol
= --bol
;
1394 while (bol
> gs
->buf
&& bol
[-1] != '\n')
1397 if (comment_needed
&& (is_empty_line(bol
, eol
) ||
1398 match_funcname(opt
, gs
, bol
, eol
))) {
1407 if (funcname_needed
&& match_funcname(opt
, gs
, bol
, eol
)) {
1409 funcname_needed
= 0;
1417 /* We need to look even further back to find a function signature. */
1418 if (opt
->funcname
&& funcname_needed
)
1419 show_funcname_line(opt
, gs
, bol
, cur
);
1423 const char *eol
= bol
, sign
= (cur
== funcname_lno
) ? '=' : '-';
1425 while (*eol
!= '\n')
1427 show_line(opt
, bol
, eol
, gs
->name
, cur
, 0, sign
);
1433 static int should_lookahead(struct grep_opt
*opt
)
1437 if (opt
->pattern_expression
)
1438 return 0; /* punt for too complex stuff */
1441 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
1442 if (p
->token
!= GREP_PATTERN
)
1443 return 0; /* punt for "header only" and stuff */
1448 static int look_ahead(struct grep_opt
*opt
,
1449 unsigned long *left_p
,
1453 unsigned lno
= *lno_p
;
1454 const char *bol
= *bol_p
;
1456 const char *sp
, *last_bol
;
1457 regoff_t earliest
= -1;
1459 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
1463 hit
= patmatch(p
, bol
, bol
+ *left_p
, &m
, 0);
1464 if (!hit
|| m
.rm_so
< 0 || m
.rm_eo
< 0)
1466 if (earliest
< 0 || m
.rm_so
< earliest
)
1471 *bol_p
= bol
+ *left_p
;
1475 for (sp
= bol
+ earliest
; bol
< sp
&& sp
[-1] != '\n'; sp
--)
1476 ; /* find the beginning of the line */
1479 for (sp
= bol
; sp
< last_bol
; sp
++) {
1483 *left_p
-= last_bol
- bol
;
1489 static int fill_textconv_grep(struct repository
*r
,
1490 struct userdiff_driver
*driver
,
1491 struct grep_source
*gs
)
1493 struct diff_filespec
*df
;
1497 if (!driver
|| !driver
->textconv
)
1498 return grep_source_load(gs
);
1501 * The textconv interface is intimately tied to diff_filespecs, so we
1502 * have to pretend to be one. If we could unify the grep_source
1503 * and diff_filespec structs, this mess could just go away.
1505 df
= alloc_filespec(gs
->path
);
1507 case GREP_SOURCE_OID
:
1508 fill_filespec(df
, gs
->identifier
, 1, 0100644);
1510 case GREP_SOURCE_FILE
:
1511 fill_filespec(df
, null_oid(), 0, 0100644);
1514 BUG("attempt to textconv something without a path?");
1518 * fill_textconv is not remotely thread-safe; it modifies the global
1519 * diff tempfile structure, writes to the_repo's odb and might
1520 * internally call thread-unsafe functions such as the
1521 * prepare_packed_git() lazy-initializator. Because of the last two, we
1522 * must ensure mutual exclusion between this call and the object reading
1523 * API, thus we use obj_read_lock() here.
1525 * TODO: allowing text conversion to run in parallel with object
1526 * reading operations might increase performance in the multithreaded
1527 * non-worktreee git-grep with --textconv.
1530 size
= fill_textconv(r
, driver
, df
, &buf
);
1535 * The normal fill_textconv usage by the diff machinery would just keep
1536 * the textconv'd buf separate from the diff_filespec. But much of the
1537 * grep code passes around a grep_source and assumes that its "buf"
1538 * pointer is the beginning of the thing we are searching. So let's
1539 * install our textconv'd version into the grep_source, taking care not
1540 * to leak any existing buffer.
1542 grep_source_clear_data(gs
);
1549 static int is_empty_line(const char *bol
, const char *eol
)
1551 while (bol
< eol
&& isspace(*bol
))
1556 static int grep_source_1(struct grep_opt
*opt
, struct grep_source
*gs
, int collect_hits
)
1559 const char *peek_bol
= NULL
;
1562 unsigned last_hit
= 0;
1563 int binary_match_only
= 0;
1565 int try_lookahead
= 0;
1566 int show_function
= 0;
1567 struct userdiff_driver
*textconv
= NULL
;
1568 enum grep_context ctx
= GREP_CONTEXT_HEAD
;
1571 if (!opt
->status_only
&& gs
->name
== NULL
)
1572 BUG("grep call which could print a name requires "
1573 "grep_source.name be non-NULL");
1576 opt
->output
= std_output
;
1578 if (opt
->pre_context
|| opt
->post_context
|| opt
->file_break
||
1580 /* Show hunk marks, except for the first file. */
1581 if (opt
->last_shown
)
1582 opt
->show_hunk_mark
= 1;
1584 * If we're using threads then we can't easily identify
1585 * the first file. Always put hunk marks in that case
1586 * and skip the very first one later in work_done().
1588 if (opt
->output
!= std_output
)
1589 opt
->show_hunk_mark
= 1;
1591 opt
->last_shown
= 0;
1593 if (opt
->allow_textconv
) {
1594 grep_source_load_driver(gs
, opt
->repo
->index
);
1596 * We might set up the shared textconv cache data here, which
1597 * is not thread-safe. Also, get_oid_with_context() and
1598 * parse_object() might be internally called. As they are not
1599 * currently thread-safe and might be racy with object reading,
1600 * obj_read_lock() must be called.
1604 textconv
= userdiff_get_textconv(opt
->repo
, gs
->driver
);
1610 * We know the result of a textconv is text, so we only have to care
1611 * about binary handling if we are not using it.
1614 switch (opt
->binary
) {
1615 case GREP_BINARY_DEFAULT
:
1616 if (grep_source_is_binary(gs
, opt
->repo
->index
))
1617 binary_match_only
= 1;
1619 case GREP_BINARY_NOMATCH
:
1620 if (grep_source_is_binary(gs
, opt
->repo
->index
))
1621 return 0; /* Assume unmatch */
1623 case GREP_BINARY_TEXT
:
1626 BUG("unknown binary handling mode");
1630 memset(&xecfg
, 0, sizeof(xecfg
));
1633 try_lookahead
= should_lookahead(opt
);
1635 if (fill_textconv_grep(opt
->repo
, textconv
, gs
) < 0)
1644 ssize_t col
= -1, icol
= -1;
1647 * look_ahead() skips quickly to the line that possibly
1648 * has the next hit; don't call it if we need to do
1649 * something more than just skipping the current line
1650 * in response to an unmatch for the current line. E.g.
1651 * inside a post-context window, we will show the current
1652 * line as a context around the previous hit when it
1657 && (show_function
||
1658 lno
<= last_hit
+ opt
->post_context
))
1659 && look_ahead(opt
, &left
, &lno
, &bol
))
1661 eol
= end_of_line(bol
, &left
);
1663 if ((ctx
== GREP_CONTEXT_HEAD
) && (eol
== bol
))
1664 ctx
= GREP_CONTEXT_BODY
;
1666 hit
= match_line(opt
, bol
, eol
, &col
, &icol
, ctx
, collect_hits
);
1671 /* "grep -v -e foo -e bla" should list lines
1672 * that do not have either, so inversion should
1677 if (opt
->unmatch_name_only
) {
1682 if (hit
&& (opt
->max_count
< 0 || count
< opt
->max_count
)) {
1684 if (opt
->status_only
)
1686 if (opt
->name_only
) {
1687 show_name(opt
, gs
->name
);
1692 if (binary_match_only
) {
1693 opt
->output(opt
, "Binary file ", 12);
1694 output_color(opt
, gs
->name
, strlen(gs
->name
),
1695 opt
->colors
[GREP_COLOR_FILENAME
]);
1696 opt
->output(opt
, " matches\n", 9);
1699 /* Hit at this line. If we haven't shown the
1700 * pre-context lines, we would need to show them.
1702 if (opt
->pre_context
|| opt
->funcbody
)
1703 show_pre_context(opt
, gs
, bol
, eol
, lno
);
1704 else if (opt
->funcname
)
1705 show_funcname_line(opt
, gs
, bol
, lno
);
1706 cno
= opt
->invert
? icol
: col
;
1709 * A negative cno indicates that there was no
1710 * match on the line. We are thus inverted and
1711 * being asked to show all lines that _don't_
1712 * match a given expression. Therefore, set cno
1713 * to 0 to suggest the whole line matches.
1717 show_line(opt
, bol
, eol
, gs
->name
, lno
, cno
+ 1, ':');
1723 if (show_function
&& (!peek_bol
|| peek_bol
< bol
)) {
1724 unsigned long peek_left
= left
;
1725 const char *peek_eol
= eol
;
1728 * Trailing empty lines are not interesting.
1729 * Peek past them to see if they belong to the
1730 * body of the current function.
1733 while (is_empty_line(peek_bol
, peek_eol
)) {
1734 peek_bol
= peek_eol
+ 1;
1735 peek_eol
= end_of_line(peek_bol
, &peek_left
);
1738 if (match_funcname(opt
, gs
, peek_bol
, peek_eol
))
1741 if (show_function
||
1742 (last_hit
&& lno
<= last_hit
+ opt
->post_context
)) {
1743 /* If the last hit is within the post context,
1744 * we need to show this line.
1746 show_line(opt
, bol
, eol
, gs
->name
, lno
, col
+ 1, '-');
1760 if (opt
->status_only
)
1761 return opt
->unmatch_name_only
;
1762 if (opt
->unmatch_name_only
) {
1763 /* We did not see any hit, so we want to show this */
1764 show_name(opt
, gs
->name
);
1768 xdiff_clear_find_func(&xecfg
);
1772 * The real "grep -c foo *.c" gives many "bar.c:0" lines,
1773 * which feels mostly useless but sometimes useful. Maybe
1774 * make it another option? For now suppress them.
1776 if (opt
->count
&& count
) {
1778 if (opt
->pathname
) {
1779 output_color(opt
, gs
->name
, strlen(gs
->name
),
1780 opt
->colors
[GREP_COLOR_FILENAME
]);
1781 output_sep(opt
, ':');
1783 xsnprintf(buf
, sizeof(buf
), "%u\n", count
);
1784 opt
->output(opt
, buf
, strlen(buf
));
1790 static void clr_hit_marker(struct grep_expr
*x
)
1792 /* All-hit markers are meaningful only at the very top level
1797 if (x
->node
!= GREP_NODE_OR
)
1799 x
->u
.binary
.left
->hit
= 0;
1800 x
= x
->u
.binary
.right
;
1804 static int chk_hit_marker(struct grep_expr
*x
)
1806 /* Top level nodes have hit markers. See if they all are hits */
1808 if (x
->node
!= GREP_NODE_OR
)
1810 if (!x
->u
.binary
.left
->hit
)
1812 x
= x
->u
.binary
.right
;
1816 int grep_source(struct grep_opt
*opt
, struct grep_source
*gs
)
1819 * we do not have to do the two-pass grep when we do not check
1820 * buffer-wide "all-match".
1822 if (!opt
->all_match
&& !opt
->no_body_match
)
1823 return grep_source_1(opt
, gs
, 0);
1825 /* Otherwise the toplevel "or" terms hit a bit differently.
1826 * We first clear hit markers from them.
1828 clr_hit_marker(opt
->pattern_expression
);
1830 grep_source_1(opt
, gs
, 1);
1832 if (opt
->all_match
&& !chk_hit_marker(opt
->pattern_expression
))
1834 if (opt
->no_body_match
&& opt
->body_hit
)
1837 return grep_source_1(opt
, gs
, 0);
1840 static void grep_source_init_buf(struct grep_source
*gs
,
1844 gs
->type
= GREP_SOURCE_BUF
;
1850 gs
->identifier
= NULL
;
1853 int grep_buffer(struct grep_opt
*opt
, const char *buf
, unsigned long size
)
1855 struct grep_source gs
;
1858 grep_source_init_buf(&gs
, buf
, size
);
1860 r
= grep_source(opt
, &gs
);
1862 grep_source_clear(&gs
);
1866 void grep_source_init_file(struct grep_source
*gs
, const char *name
,
1869 gs
->type
= GREP_SOURCE_FILE
;
1870 gs
->name
= xstrdup_or_null(name
);
1871 gs
->path
= xstrdup_or_null(path
);
1875 gs
->identifier
= xstrdup(path
);
1878 void grep_source_init_oid(struct grep_source
*gs
, const char *name
,
1879 const char *path
, const struct object_id
*oid
,
1880 struct repository
*repo
)
1882 gs
->type
= GREP_SOURCE_OID
;
1883 gs
->name
= xstrdup_or_null(name
);
1884 gs
->path
= xstrdup_or_null(path
);
1888 gs
->identifier
= oiddup(oid
);
1892 void grep_source_clear(struct grep_source
*gs
)
1894 FREE_AND_NULL(gs
->name
);
1895 FREE_AND_NULL(gs
->path
);
1896 FREE_AND_NULL(gs
->identifier
);
1897 grep_source_clear_data(gs
);
1900 void grep_source_clear_data(struct grep_source
*gs
)
1903 case GREP_SOURCE_FILE
:
1904 case GREP_SOURCE_OID
:
1905 /* these types own the buffer */
1906 free((char *)gs
->buf
);
1910 case GREP_SOURCE_BUF
:
1911 /* leave user-provided buf intact */
1916 static int grep_source_load_oid(struct grep_source
*gs
)
1918 enum object_type type
;
1920 gs
->buf
= repo_read_object_file(gs
->repo
, gs
->identifier
, &type
,
1923 return error(_("'%s': unable to read %s"),
1925 oid_to_hex(gs
->identifier
));
1929 static int grep_source_load_file(struct grep_source
*gs
)
1931 const char *filename
= gs
->identifier
;
1937 if (lstat(filename
, &st
) < 0) {
1939 if (errno
!= ENOENT
)
1940 error_errno(_("failed to stat '%s'"), filename
);
1943 if (!S_ISREG(st
.st_mode
))
1945 size
= xsize_t(st
.st_size
);
1946 i
= open(filename
, O_RDONLY
);
1949 data
= xmallocz(size
);
1950 if (st
.st_size
!= read_in_full(i
, data
, size
)) {
1951 error_errno(_("'%s': short read"), filename
);
1963 static int grep_source_load(struct grep_source
*gs
)
1969 case GREP_SOURCE_FILE
:
1970 return grep_source_load_file(gs
);
1971 case GREP_SOURCE_OID
:
1972 return grep_source_load_oid(gs
);
1973 case GREP_SOURCE_BUF
:
1974 return gs
->buf
? 0 : -1;
1976 BUG("invalid grep_source type to load");
1979 void grep_source_load_driver(struct grep_source
*gs
,
1980 struct index_state
*istate
)
1987 gs
->driver
= userdiff_find_by_path(istate
, gs
->path
);
1989 gs
->driver
= userdiff_find_by_name("default");
1993 static int grep_source_is_binary(struct grep_source
*gs
,
1994 struct index_state
*istate
)
1996 grep_source_load_driver(gs
, istate
);
1997 if (gs
->driver
->binary
!= -1)
1998 return gs
->driver
->binary
;
2000 if (!grep_source_load(gs
))
2001 return buffer_is_binary(gs
->buf
, gs
->size
);