4 #include "xdiff-interface.h"
10 static int grep_source_load(struct grep_source
*gs
);
11 static int grep_source_is_binary(struct grep_source
*gs
);
13 static struct grep_opt grep_defaults
;
15 static void std_output(struct grep_opt
*opt
, const void *buf
, size_t size
)
17 fwrite(buf
, size
, 1, stdout
);
21 * Initialize the grep_defaults template with hardcoded defaults.
22 * We could let the compiler do this, but without C99 initializers
23 * the code gets unwieldy and unreadable, so...
25 void init_grep_defaults(void)
27 struct grep_opt
*opt
= &grep_defaults
;
34 memset(opt
, 0, sizeof(*opt
));
37 opt
->regflags
= REG_NEWLINE
;
39 opt
->pattern_type_option
= GREP_PATTERN_TYPE_UNSPECIFIED
;
40 opt
->extended_regexp_option
= 0;
41 color_set(opt
->color_context
, "");
42 color_set(opt
->color_filename
, "");
43 color_set(opt
->color_function
, "");
44 color_set(opt
->color_lineno
, "");
45 color_set(opt
->color_match_context
, GIT_COLOR_BOLD_RED
);
46 color_set(opt
->color_match_selected
, GIT_COLOR_BOLD_RED
);
47 color_set(opt
->color_selected
, "");
48 color_set(opt
->color_sep
, GIT_COLOR_CYAN
);
50 opt
->output
= std_output
;
53 static int parse_pattern_type_arg(const char *opt
, const char *arg
)
55 if (!strcmp(arg
, "default"))
56 return GREP_PATTERN_TYPE_UNSPECIFIED
;
57 else if (!strcmp(arg
, "basic"))
58 return GREP_PATTERN_TYPE_BRE
;
59 else if (!strcmp(arg
, "extended"))
60 return GREP_PATTERN_TYPE_ERE
;
61 else if (!strcmp(arg
, "fixed"))
62 return GREP_PATTERN_TYPE_FIXED
;
63 else if (!strcmp(arg
, "perl"))
64 return GREP_PATTERN_TYPE_PCRE
;
65 die("bad %s argument: %s", opt
, arg
);
69 * Read the configuration file once and store it in
70 * the grep_defaults template.
72 int grep_config(const char *var
, const char *value
, void *cb
)
74 struct grep_opt
*opt
= &grep_defaults
;
77 if (userdiff_config(var
, value
) < 0)
80 if (!strcmp(var
, "grep.extendedregexp")) {
81 if (git_config_bool(var
, value
))
82 opt
->extended_regexp_option
= 1;
84 opt
->extended_regexp_option
= 0;
88 if (!strcmp(var
, "grep.patterntype")) {
89 opt
->pattern_type_option
= parse_pattern_type_arg(var
, value
);
93 if (!strcmp(var
, "grep.linenumber")) {
94 opt
->linenum
= git_config_bool(var
, value
);
98 if (!strcmp(var
, "grep.fullname")) {
99 opt
->relative
= !git_config_bool(var
, value
);
103 if (!strcmp(var
, "color.grep"))
104 opt
->color
= git_config_colorbool(var
, value
);
105 else if (!strcmp(var
, "color.grep.context"))
106 color
= opt
->color_context
;
107 else if (!strcmp(var
, "color.grep.filename"))
108 color
= opt
->color_filename
;
109 else if (!strcmp(var
, "color.grep.function"))
110 color
= opt
->color_function
;
111 else if (!strcmp(var
, "color.grep.linenumber"))
112 color
= opt
->color_lineno
;
113 else if (!strcmp(var
, "color.grep.matchcontext"))
114 color
= opt
->color_match_context
;
115 else if (!strcmp(var
, "color.grep.matchselected"))
116 color
= opt
->color_match_selected
;
117 else if (!strcmp(var
, "color.grep.selected"))
118 color
= opt
->color_selected
;
119 else if (!strcmp(var
, "color.grep.separator"))
120 color
= opt
->color_sep
;
121 else if (!strcmp(var
, "color.grep.match")) {
124 return config_error_nonbool(var
);
125 rc
|= color_parse(value
, opt
->color_match_context
);
126 rc
|= color_parse(value
, opt
->color_match_selected
);
132 return config_error_nonbool(var
);
133 return color_parse(value
, color
);
139 * Initialize one instance of grep_opt and copy the
140 * default values from the template we read the configuration
141 * information in an earlier call to git_config(grep_config).
143 void grep_init(struct grep_opt
*opt
, const char *prefix
)
145 struct grep_opt
*def
= &grep_defaults
;
147 memset(opt
, 0, sizeof(*opt
));
148 opt
->prefix
= prefix
;
149 opt
->prefix_length
= (prefix
&& *prefix
) ? strlen(prefix
) : 0;
150 opt
->pattern_tail
= &opt
->pattern_list
;
151 opt
->header_tail
= &opt
->header_list
;
153 opt
->color
= def
->color
;
154 opt
->extended_regexp_option
= def
->extended_regexp_option
;
155 opt
->pattern_type_option
= def
->pattern_type_option
;
156 opt
->linenum
= def
->linenum
;
157 opt
->max_depth
= def
->max_depth
;
158 opt
->pathname
= def
->pathname
;
159 opt
->regflags
= def
->regflags
;
160 opt
->relative
= def
->relative
;
161 opt
->output
= def
->output
;
163 color_set(opt
->color_context
, def
->color_context
);
164 color_set(opt
->color_filename
, def
->color_filename
);
165 color_set(opt
->color_function
, def
->color_function
);
166 color_set(opt
->color_lineno
, def
->color_lineno
);
167 color_set(opt
->color_match_context
, def
->color_match_context
);
168 color_set(opt
->color_match_selected
, def
->color_match_selected
);
169 color_set(opt
->color_selected
, def
->color_selected
);
170 color_set(opt
->color_sep
, def
->color_sep
);
173 static void grep_set_pattern_type_option(enum grep_pattern_type pattern_type
, struct grep_opt
*opt
)
175 switch (pattern_type
) {
176 case GREP_PATTERN_TYPE_UNSPECIFIED
:
179 case GREP_PATTERN_TYPE_BRE
:
184 case GREP_PATTERN_TYPE_ERE
:
187 opt
->regflags
|= REG_EXTENDED
;
190 case GREP_PATTERN_TYPE_FIXED
:
195 case GREP_PATTERN_TYPE_PCRE
:
202 void grep_commit_pattern_type(enum grep_pattern_type pattern_type
, struct grep_opt
*opt
)
204 if (pattern_type
!= GREP_PATTERN_TYPE_UNSPECIFIED
)
205 grep_set_pattern_type_option(pattern_type
, opt
);
206 else if (opt
->pattern_type_option
!= GREP_PATTERN_TYPE_UNSPECIFIED
)
207 grep_set_pattern_type_option(opt
->pattern_type_option
, opt
);
208 else if (opt
->extended_regexp_option
)
209 grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE
, opt
);
212 static struct grep_pat
*create_grep_pat(const char *pat
, size_t patlen
,
213 const char *origin
, int no
,
214 enum grep_pat_token t
,
215 enum grep_header_field field
)
217 struct grep_pat
*p
= xcalloc(1, sizeof(*p
));
218 p
->pattern
= xmemdupz(pat
, patlen
);
219 p
->patternlen
= patlen
;
227 static void do_append_grep_pat(struct grep_pat
***tail
, struct grep_pat
*p
)
234 case GREP_PATTERN
: /* atom */
235 case GREP_PATTERN_HEAD
:
236 case GREP_PATTERN_BODY
:
238 struct grep_pat
*new_pat
;
240 char *cp
= p
->pattern
+ p
->patternlen
, *nl
= NULL
;
241 while (++len
<= p
->patternlen
) {
242 if (*(--cp
) == '\n') {
249 new_pat
= create_grep_pat(nl
+ 1, len
- 1, p
->origin
,
250 p
->no
, p
->token
, p
->field
);
251 new_pat
->next
= p
->next
;
253 *tail
= &new_pat
->next
;
256 p
->patternlen
-= len
;
264 void append_header_grep_pattern(struct grep_opt
*opt
,
265 enum grep_header_field field
, const char *pat
)
267 struct grep_pat
*p
= create_grep_pat(pat
, strlen(pat
), "header", 0,
268 GREP_PATTERN_HEAD
, field
);
269 if (field
== GREP_HEADER_REFLOG
)
270 opt
->use_reflog_filter
= 1;
271 do_append_grep_pat(&opt
->header_tail
, p
);
274 void append_grep_pattern(struct grep_opt
*opt
, const char *pat
,
275 const char *origin
, int no
, enum grep_pat_token t
)
277 append_grep_pat(opt
, pat
, strlen(pat
), origin
, no
, t
);
280 void append_grep_pat(struct grep_opt
*opt
, const char *pat
, size_t patlen
,
281 const char *origin
, int no
, enum grep_pat_token t
)
283 struct grep_pat
*p
= create_grep_pat(pat
, patlen
, origin
, no
, t
, 0);
284 do_append_grep_pat(&opt
->pattern_tail
, p
);
287 struct grep_opt
*grep_opt_dup(const struct grep_opt
*opt
)
289 struct grep_pat
*pat
;
290 struct grep_opt
*ret
= xmalloc(sizeof(struct grep_opt
));
293 ret
->pattern_list
= NULL
;
294 ret
->pattern_tail
= &ret
->pattern_list
;
296 for(pat
= opt
->pattern_list
; pat
!= NULL
; pat
= pat
->next
)
298 if(pat
->token
== GREP_PATTERN_HEAD
)
299 append_header_grep_pattern(ret
, pat
->field
,
302 append_grep_pat(ret
, pat
->pattern
, pat
->patternlen
,
303 pat
->origin
, pat
->no
, pat
->token
);
309 static NORETURN
void compile_regexp_failed(const struct grep_pat
*p
,
315 xsnprintf(where
, sizeof(where
), "In '%s' at %d, ", p
->origin
, p
->no
);
317 xsnprintf(where
, sizeof(where
), "%s, ", p
->origin
);
321 die("%s'%s': %s", where
, p
->pattern
, error
);
324 static int is_fixed(const char *s
, size_t len
)
328 for (i
= 0; i
< len
; i
++) {
329 if (is_regex_special(s
[i
]))
336 static int has_null(const char *s
, size_t len
)
339 * regcomp cannot accept patterns with NULs so when using it
340 * we consider any pattern containing a NUL fixed.
342 if (memchr(s
, 0, len
))
349 static void compile_pcre1_regexp(struct grep_pat
*p
, const struct grep_opt
*opt
)
353 int options
= PCRE_MULTILINE
;
355 if (opt
->ignore_case
) {
356 if (has_non_ascii(p
->pattern
))
357 p
->pcre1_tables
= pcre_maketables();
358 options
|= PCRE_CASELESS
;
360 if (is_utf8_locale() && has_non_ascii(p
->pattern
))
361 options
|= PCRE_UTF8
;
363 p
->pcre1_regexp
= pcre_compile(p
->pattern
, options
, &error
, &erroffset
,
365 if (!p
->pcre1_regexp
)
366 compile_regexp_failed(p
, error
);
368 p
->pcre1_extra_info
= pcre_study(p
->pcre1_regexp
, PCRE_STUDY_JIT_COMPILE
, &error
);
369 if (!p
->pcre1_extra_info
&& error
)
372 #ifdef GIT_PCRE1_USE_JIT
373 pcre_config(PCRE_CONFIG_JIT
, &p
->pcre1_jit_on
);
374 if (p
->pcre1_jit_on
== 1) {
375 p
->pcre1_jit_stack
= pcre_jit_stack_alloc(1, 1024 * 1024);
376 if (!p
->pcre1_jit_stack
)
377 die("Couldn't allocate PCRE JIT stack");
378 pcre_assign_jit_stack(p
->pcre1_extra_info
, NULL
, p
->pcre1_jit_stack
);
379 } else if (p
->pcre1_jit_on
!= 0) {
380 die("BUG: The pcre1_jit_on variable should be 0 or 1, not %d",
386 static int pcre1match(struct grep_pat
*p
, const char *line
, const char *eol
,
387 regmatch_t
*match
, int eflags
)
389 int ovector
[30], ret
, flags
= 0;
391 if (eflags
& REG_NOTBOL
)
392 flags
|= PCRE_NOTBOL
;
394 #ifdef GIT_PCRE1_USE_JIT
395 if (p
->pcre1_jit_on
) {
396 ret
= pcre_jit_exec(p
->pcre1_regexp
, p
->pcre1_extra_info
, line
,
397 eol
- line
, 0, flags
, ovector
,
398 ARRAY_SIZE(ovector
), p
->pcre1_jit_stack
);
402 ret
= pcre_exec(p
->pcre1_regexp
, p
->pcre1_extra_info
, line
,
403 eol
- line
, 0, flags
, ovector
,
404 ARRAY_SIZE(ovector
));
407 if (ret
< 0 && ret
!= PCRE_ERROR_NOMATCH
)
408 die("pcre_exec failed with error code %d", ret
);
411 match
->rm_so
= ovector
[0];
412 match
->rm_eo
= ovector
[1];
418 static void free_pcre1_regexp(struct grep_pat
*p
)
420 pcre_free(p
->pcre1_regexp
);
421 #ifdef GIT_PCRE1_USE_JIT
422 if (p
->pcre1_jit_on
) {
423 pcre_free_study(p
->pcre1_extra_info
);
424 pcre_jit_stack_free(p
->pcre1_jit_stack
);
428 pcre_free(p
->pcre1_extra_info
);
430 pcre_free((void *)p
->pcre1_tables
);
432 #else /* !USE_LIBPCRE1 */
433 static void compile_pcre1_regexp(struct grep_pat
*p
, const struct grep_opt
*opt
)
435 die("cannot use Perl-compatible regexes when not compiled with USE_LIBPCRE");
438 static int pcre1match(struct grep_pat
*p
, const char *line
, const char *eol
,
439 regmatch_t
*match
, int eflags
)
444 static void free_pcre1_regexp(struct grep_pat
*p
)
447 #endif /* !USE_LIBPCRE1 */
449 static void compile_fixed_regexp(struct grep_pat
*p
, struct grep_opt
*opt
)
451 struct strbuf sb
= STRBUF_INIT
;
453 int regflags
= opt
->regflags
;
455 basic_regex_quote_buf(&sb
, p
->pattern
);
456 if (opt
->ignore_case
)
457 regflags
|= REG_ICASE
;
458 err
= regcomp(&p
->regexp
, sb
.buf
, regflags
);
460 fprintf(stderr
, "fixed %s\n", sb
.buf
);
464 regerror(err
, &p
->regexp
, errbuf
, sizeof(errbuf
));
466 compile_regexp_failed(p
, errbuf
);
470 static void compile_regexp(struct grep_pat
*p
, struct grep_opt
*opt
)
472 int icase
, ascii_only
;
475 p
->word_regexp
= opt
->word_regexp
;
476 p
->ignore_case
= opt
->ignore_case
;
477 icase
= opt
->regflags
& REG_ICASE
|| p
->ignore_case
;
478 ascii_only
= !has_non_ascii(p
->pattern
);
481 * Even when -F (fixed) asks us to do a non-regexp search, we
482 * may not be able to correctly case-fold when -i
483 * (ignore-case) is asked (in which case, we'll synthesize a
484 * regexp to match the pattern that matches regexp special
485 * characters literally, while ignoring case differences). On
486 * the other hand, even without -F, if the pattern does not
487 * have any regexp special characters and there is no need for
488 * case-folding search, we can internally turn it into a
489 * simple string match using kws. p->fixed tells us if we
493 has_null(p
->pattern
, p
->patternlen
) ||
494 is_fixed(p
->pattern
, p
->patternlen
))
495 p
->fixed
= !icase
|| ascii_only
;
500 p
->kws
= kwsalloc(icase
? tolower_trans_tbl
: NULL
);
501 kwsincr(p
->kws
, p
->pattern
, p
->patternlen
);
504 } else if (opt
->fixed
) {
506 * We come here when the pattern has the non-ascii
507 * characters we cannot case-fold, and asked to
510 compile_fixed_regexp(p
, opt
);
515 compile_pcre1_regexp(p
, opt
);
519 err
= regcomp(&p
->regexp
, p
->pattern
, opt
->regflags
);
522 regerror(err
, &p
->regexp
, errbuf
, 1024);
524 compile_regexp_failed(p
, errbuf
);
528 static struct grep_expr
*compile_pattern_or(struct grep_pat
**);
529 static struct grep_expr
*compile_pattern_atom(struct grep_pat
**list
)
538 case GREP_PATTERN
: /* atom */
539 case GREP_PATTERN_HEAD
:
540 case GREP_PATTERN_BODY
:
541 x
= xcalloc(1, sizeof (struct grep_expr
));
542 x
->node
= GREP_NODE_ATOM
;
546 case GREP_OPEN_PAREN
:
548 x
= compile_pattern_or(list
);
549 if (!*list
|| (*list
)->token
!= GREP_CLOSE_PAREN
)
550 die("unmatched parenthesis");
551 *list
= (*list
)->next
;
558 static struct grep_expr
*compile_pattern_not(struct grep_pat
**list
)
569 die("--not not followed by pattern expression");
571 x
= xcalloc(1, sizeof (struct grep_expr
));
572 x
->node
= GREP_NODE_NOT
;
573 x
->u
.unary
= compile_pattern_not(list
);
575 die("--not followed by non pattern expression");
578 return compile_pattern_atom(list
);
582 static struct grep_expr
*compile_pattern_and(struct grep_pat
**list
)
585 struct grep_expr
*x
, *y
, *z
;
587 x
= compile_pattern_not(list
);
589 if (p
&& p
->token
== GREP_AND
) {
591 die("--and not followed by pattern expression");
593 y
= compile_pattern_and(list
);
595 die("--and not followed by pattern expression");
596 z
= xcalloc(1, sizeof (struct grep_expr
));
597 z
->node
= GREP_NODE_AND
;
598 z
->u
.binary
.left
= x
;
599 z
->u
.binary
.right
= y
;
605 static struct grep_expr
*compile_pattern_or(struct grep_pat
**list
)
608 struct grep_expr
*x
, *y
, *z
;
610 x
= compile_pattern_and(list
);
612 if (x
&& p
&& p
->token
!= GREP_CLOSE_PAREN
) {
613 y
= compile_pattern_or(list
);
615 die("not a pattern expression %s", p
->pattern
);
616 z
= xcalloc(1, sizeof (struct grep_expr
));
617 z
->node
= GREP_NODE_OR
;
618 z
->u
.binary
.left
= x
;
619 z
->u
.binary
.right
= y
;
625 static struct grep_expr
*compile_pattern_expr(struct grep_pat
**list
)
627 return compile_pattern_or(list
);
630 static void indent(int in
)
636 static void dump_grep_pat(struct grep_pat
*p
)
639 case GREP_AND
: fprintf(stderr
, "*and*"); break;
640 case GREP_OPEN_PAREN
: fprintf(stderr
, "*(*"); break;
641 case GREP_CLOSE_PAREN
: fprintf(stderr
, "*)*"); break;
642 case GREP_NOT
: fprintf(stderr
, "*not*"); break;
643 case GREP_OR
: fprintf(stderr
, "*or*"); break;
645 case GREP_PATTERN
: fprintf(stderr
, "pattern"); break;
646 case GREP_PATTERN_HEAD
: fprintf(stderr
, "pattern_head"); break;
647 case GREP_PATTERN_BODY
: fprintf(stderr
, "pattern_body"); break;
652 case GREP_PATTERN_HEAD
:
653 fprintf(stderr
, "<head %d>", p
->field
); break;
654 case GREP_PATTERN_BODY
:
655 fprintf(stderr
, "<body>"); break;
659 case GREP_PATTERN_HEAD
:
660 case GREP_PATTERN_BODY
:
662 fprintf(stderr
, "%.*s", (int)p
->patternlen
, p
->pattern
);
668 static void dump_grep_expression_1(struct grep_expr
*x
, int in
)
673 fprintf(stderr
, "true\n");
676 dump_grep_pat(x
->u
.atom
);
679 fprintf(stderr
, "(not\n");
680 dump_grep_expression_1(x
->u
.unary
, in
+1);
682 fprintf(stderr
, ")\n");
685 fprintf(stderr
, "(and\n");
686 dump_grep_expression_1(x
->u
.binary
.left
, in
+1);
687 dump_grep_expression_1(x
->u
.binary
.right
, in
+1);
689 fprintf(stderr
, ")\n");
692 fprintf(stderr
, "(or\n");
693 dump_grep_expression_1(x
->u
.binary
.left
, in
+1);
694 dump_grep_expression_1(x
->u
.binary
.right
, in
+1);
696 fprintf(stderr
, ")\n");
701 static void dump_grep_expression(struct grep_opt
*opt
)
703 struct grep_expr
*x
= opt
->pattern_expression
;
706 fprintf(stderr
, "[all-match]\n");
707 dump_grep_expression_1(x
, 0);
711 static struct grep_expr
*grep_true_expr(void)
713 struct grep_expr
*z
= xcalloc(1, sizeof(*z
));
714 z
->node
= GREP_NODE_TRUE
;
718 static struct grep_expr
*grep_or_expr(struct grep_expr
*left
, struct grep_expr
*right
)
720 struct grep_expr
*z
= xcalloc(1, sizeof(*z
));
721 z
->node
= GREP_NODE_OR
;
722 z
->u
.binary
.left
= left
;
723 z
->u
.binary
.right
= right
;
727 static struct grep_expr
*prep_header_patterns(struct grep_opt
*opt
)
730 struct grep_expr
*header_expr
;
731 struct grep_expr
*(header_group
[GREP_HEADER_FIELD_MAX
]);
732 enum grep_header_field fld
;
734 if (!opt
->header_list
)
737 for (p
= opt
->header_list
; p
; p
= p
->next
) {
738 if (p
->token
!= GREP_PATTERN_HEAD
)
739 die("BUG: a non-header pattern in grep header list.");
740 if (p
->field
< GREP_HEADER_FIELD_MIN
||
741 GREP_HEADER_FIELD_MAX
<= p
->field
)
742 die("BUG: unknown header field %d", p
->field
);
743 compile_regexp(p
, opt
);
746 for (fld
= 0; fld
< GREP_HEADER_FIELD_MAX
; fld
++)
747 header_group
[fld
] = NULL
;
749 for (p
= opt
->header_list
; p
; p
= p
->next
) {
751 struct grep_pat
*pp
= p
;
753 h
= compile_pattern_atom(&pp
);
754 if (!h
|| pp
!= p
->next
)
755 die("BUG: malformed header expr");
756 if (!header_group
[p
->field
]) {
757 header_group
[p
->field
] = h
;
760 header_group
[p
->field
] = grep_or_expr(h
, header_group
[p
->field
]);
765 for (fld
= 0; fld
< GREP_HEADER_FIELD_MAX
; fld
++) {
766 if (!header_group
[fld
])
769 header_expr
= grep_true_expr();
770 header_expr
= grep_or_expr(header_group
[fld
], header_expr
);
775 static struct grep_expr
*grep_splice_or(struct grep_expr
*x
, struct grep_expr
*y
)
777 struct grep_expr
*z
= x
;
780 assert(x
->node
== GREP_NODE_OR
);
781 if (x
->u
.binary
.right
&&
782 x
->u
.binary
.right
->node
== GREP_NODE_TRUE
) {
783 x
->u
.binary
.right
= y
;
786 x
= x
->u
.binary
.right
;
791 static void compile_grep_patterns_real(struct grep_opt
*opt
)
794 struct grep_expr
*header_expr
= prep_header_patterns(opt
);
796 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
798 case GREP_PATTERN
: /* atom */
799 case GREP_PATTERN_HEAD
:
800 case GREP_PATTERN_BODY
:
801 compile_regexp(p
, opt
);
809 if (opt
->all_match
|| header_expr
)
811 else if (!opt
->extended
&& !opt
->debug
)
814 p
= opt
->pattern_list
;
816 opt
->pattern_expression
= compile_pattern_expr(&p
);
818 die("incomplete pattern expression: %s", p
->pattern
);
823 if (!opt
->pattern_expression
)
824 opt
->pattern_expression
= header_expr
;
825 else if (opt
->all_match
)
826 opt
->pattern_expression
= grep_splice_or(header_expr
,
827 opt
->pattern_expression
);
829 opt
->pattern_expression
= grep_or_expr(opt
->pattern_expression
,
834 void compile_grep_patterns(struct grep_opt
*opt
)
836 compile_grep_patterns_real(opt
);
838 dump_grep_expression(opt
);
841 static void free_pattern_expr(struct grep_expr
*x
)
848 free_pattern_expr(x
->u
.unary
);
852 free_pattern_expr(x
->u
.binary
.left
);
853 free_pattern_expr(x
->u
.binary
.right
);
859 void free_grep_patterns(struct grep_opt
*opt
)
861 struct grep_pat
*p
, *n
;
863 for (p
= opt
->pattern_list
; p
; p
= n
) {
866 case GREP_PATTERN
: /* atom */
867 case GREP_PATTERN_HEAD
:
868 case GREP_PATTERN_BODY
:
871 else if (p
->pcre1_regexp
)
872 free_pcre1_regexp(p
);
885 free_pattern_expr(opt
->pattern_expression
);
888 static char *end_of_line(char *cp
, unsigned long *left
)
890 unsigned long l
= *left
;
891 while (l
&& *cp
!= '\n') {
899 static int word_char(char ch
)
901 return isalnum(ch
) || ch
== '_';
904 static void output_color(struct grep_opt
*opt
, const void *data
, size_t size
,
907 if (want_color(opt
->color
) && color
&& color
[0]) {
908 opt
->output(opt
, color
, strlen(color
));
909 opt
->output(opt
, data
, size
);
910 opt
->output(opt
, GIT_COLOR_RESET
, strlen(GIT_COLOR_RESET
));
912 opt
->output(opt
, data
, size
);
915 static void output_sep(struct grep_opt
*opt
, char sign
)
917 if (opt
->null_following_name
)
918 opt
->output(opt
, "\0", 1);
920 output_color(opt
, &sign
, 1, opt
->color_sep
);
923 static void show_name(struct grep_opt
*opt
, const char *name
)
925 output_color(opt
, name
, strlen(name
), opt
->color_filename
);
926 opt
->output(opt
, opt
->null_following_name
? "\0" : "\n", 1);
929 static int fixmatch(struct grep_pat
*p
, char *line
, char *eol
,
932 struct kwsmatch kwsm
;
933 size_t offset
= kwsexec(p
->kws
, line
, eol
- line
, &kwsm
);
935 match
->rm_so
= match
->rm_eo
= -1;
938 match
->rm_so
= offset
;
939 match
->rm_eo
= match
->rm_so
+ kwsm
.size
[0];
944 static int patmatch(struct grep_pat
*p
, char *line
, char *eol
,
945 regmatch_t
*match
, int eflags
)
950 hit
= !fixmatch(p
, line
, eol
, match
);
951 else if (p
->pcre1_regexp
)
952 hit
= !pcre1match(p
, line
, eol
, match
, eflags
);
954 hit
= !regexec_buf(&p
->regexp
, line
, eol
- line
, 1, match
,
960 static int strip_timestamp(char *bol
, char **eol_p
)
965 while (bol
< --eol
) {
981 { "committer ", 10 },
985 static int match_one_pattern(struct grep_pat
*p
, char *bol
, char *eol
,
986 enum grep_context ctx
,
987 regmatch_t
*pmatch
, int eflags
)
991 const char *start
= bol
;
993 if ((p
->token
!= GREP_PATTERN
) &&
994 ((p
->token
== GREP_PATTERN_HEAD
) != (ctx
== GREP_CONTEXT_HEAD
)))
997 if (p
->token
== GREP_PATTERN_HEAD
) {
1000 assert(p
->field
< ARRAY_SIZE(header_field
));
1001 field
= header_field
[p
->field
].field
;
1002 len
= header_field
[p
->field
].len
;
1003 if (strncmp(bol
, field
, len
))
1007 case GREP_HEADER_AUTHOR
:
1008 case GREP_HEADER_COMMITTER
:
1009 saved_ch
= strip_timestamp(bol
, &eol
);
1017 hit
= patmatch(p
, bol
, eol
, pmatch
, eflags
);
1019 if (hit
&& p
->word_regexp
) {
1020 if ((pmatch
[0].rm_so
< 0) ||
1021 (eol
- bol
) < pmatch
[0].rm_so
||
1022 (pmatch
[0].rm_eo
< 0) ||
1023 (eol
- bol
) < pmatch
[0].rm_eo
)
1024 die("regexp returned nonsense");
1026 /* Match beginning must be either beginning of the
1027 * line, or at word boundary (i.e. the last char must
1028 * not be a word char). Similarly, match end must be
1029 * either end of the line, or at word boundary
1030 * (i.e. the next char must not be a word char).
1032 if ( ((pmatch
[0].rm_so
== 0) ||
1033 !word_char(bol
[pmatch
[0].rm_so
-1])) &&
1034 ((pmatch
[0].rm_eo
== (eol
-bol
)) ||
1035 !word_char(bol
[pmatch
[0].rm_eo
])) )
1040 /* Words consist of at least one character. */
1041 if (pmatch
->rm_so
== pmatch
->rm_eo
)
1044 if (!hit
&& pmatch
[0].rm_so
+ bol
+ 1 < eol
) {
1045 /* There could be more than one match on the
1046 * line, and the first match might not be
1047 * strict word match. But later ones could be!
1048 * Forward to the next possible start, i.e. the
1049 * next position following a non-word char.
1051 bol
= pmatch
[0].rm_so
+ bol
+ 1;
1052 while (word_char(bol
[-1]) && bol
< eol
)
1054 eflags
|= REG_NOTBOL
;
1059 if (p
->token
== GREP_PATTERN_HEAD
&& saved_ch
)
1062 pmatch
[0].rm_so
+= bol
- start
;
1063 pmatch
[0].rm_eo
+= bol
- start
;
1068 static int match_expr_eval(struct grep_expr
*x
, char *bol
, char *eol
,
1069 enum grep_context ctx
, int collect_hits
)
1075 die("Not a valid grep expression");
1077 case GREP_NODE_TRUE
:
1080 case GREP_NODE_ATOM
:
1081 h
= match_one_pattern(x
->u
.atom
, bol
, eol
, ctx
, &match
, 0);
1084 h
= !match_expr_eval(x
->u
.unary
, bol
, eol
, ctx
, 0);
1087 if (!match_expr_eval(x
->u
.binary
.left
, bol
, eol
, ctx
, 0))
1089 h
= match_expr_eval(x
->u
.binary
.right
, bol
, eol
, ctx
, 0);
1093 return (match_expr_eval(x
->u
.binary
.left
,
1094 bol
, eol
, ctx
, 0) ||
1095 match_expr_eval(x
->u
.binary
.right
,
1097 h
= match_expr_eval(x
->u
.binary
.left
, bol
, eol
, ctx
, 0);
1098 x
->u
.binary
.left
->hit
|= h
;
1099 h
|= match_expr_eval(x
->u
.binary
.right
, bol
, eol
, ctx
, 1);
1102 die("Unexpected node type (internal error) %d", x
->node
);
1109 static int match_expr(struct grep_opt
*opt
, char *bol
, char *eol
,
1110 enum grep_context ctx
, int collect_hits
)
1112 struct grep_expr
*x
= opt
->pattern_expression
;
1113 return match_expr_eval(x
, bol
, eol
, ctx
, collect_hits
);
1116 static int match_line(struct grep_opt
*opt
, char *bol
, char *eol
,
1117 enum grep_context ctx
, int collect_hits
)
1123 return match_expr(opt
, bol
, eol
, ctx
, collect_hits
);
1125 /* we do not call with collect_hits without being extended */
1126 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
1127 if (match_one_pattern(p
, bol
, eol
, ctx
, &match
, 0))
1133 static int match_next_pattern(struct grep_pat
*p
, char *bol
, char *eol
,
1134 enum grep_context ctx
,
1135 regmatch_t
*pmatch
, int eflags
)
1139 if (!match_one_pattern(p
, bol
, eol
, ctx
, &match
, eflags
))
1141 if (match
.rm_so
< 0 || match
.rm_eo
< 0)
1143 if (pmatch
->rm_so
>= 0 && pmatch
->rm_eo
>= 0) {
1144 if (match
.rm_so
> pmatch
->rm_so
)
1146 if (match
.rm_so
== pmatch
->rm_so
&& match
.rm_eo
< pmatch
->rm_eo
)
1149 pmatch
->rm_so
= match
.rm_so
;
1150 pmatch
->rm_eo
= match
.rm_eo
;
1154 static int next_match(struct grep_opt
*opt
, char *bol
, char *eol
,
1155 enum grep_context ctx
, regmatch_t
*pmatch
, int eflags
)
1160 pmatch
->rm_so
= pmatch
->rm_eo
= -1;
1162 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
1164 case GREP_PATTERN
: /* atom */
1165 case GREP_PATTERN_HEAD
:
1166 case GREP_PATTERN_BODY
:
1167 hit
|= match_next_pattern(p
, bol
, eol
, ctx
,
1178 static void show_line(struct grep_opt
*opt
, char *bol
, char *eol
,
1179 const char *name
, unsigned lno
, char sign
)
1181 int rest
= eol
- bol
;
1182 const char *match_color
, *line_color
= NULL
;
1184 if (opt
->file_break
&& opt
->last_shown
== 0) {
1185 if (opt
->show_hunk_mark
)
1186 opt
->output(opt
, "\n", 1);
1187 } else if (opt
->pre_context
|| opt
->post_context
|| opt
->funcbody
) {
1188 if (opt
->last_shown
== 0) {
1189 if (opt
->show_hunk_mark
) {
1190 output_color(opt
, "--", 2, opt
->color_sep
);
1191 opt
->output(opt
, "\n", 1);
1193 } else if (lno
> opt
->last_shown
+ 1) {
1194 output_color(opt
, "--", 2, opt
->color_sep
);
1195 opt
->output(opt
, "\n", 1);
1198 if (opt
->heading
&& opt
->last_shown
== 0) {
1199 output_color(opt
, name
, strlen(name
), opt
->color_filename
);
1200 opt
->output(opt
, "\n", 1);
1202 opt
->last_shown
= lno
;
1204 if (!opt
->heading
&& opt
->pathname
) {
1205 output_color(opt
, name
, strlen(name
), opt
->color_filename
);
1206 output_sep(opt
, sign
);
1210 xsnprintf(buf
, sizeof(buf
), "%d", lno
);
1211 output_color(opt
, buf
, strlen(buf
), opt
->color_lineno
);
1212 output_sep(opt
, sign
);
1216 enum grep_context ctx
= GREP_CONTEXT_BODY
;
1221 match_color
= opt
->color_match_selected
;
1223 match_color
= opt
->color_match_context
;
1225 line_color
= opt
->color_selected
;
1226 else if (sign
== '-')
1227 line_color
= opt
->color_context
;
1228 else if (sign
== '=')
1229 line_color
= opt
->color_function
;
1231 while (next_match(opt
, bol
, eol
, ctx
, &match
, eflags
)) {
1232 if (match
.rm_so
== match
.rm_eo
)
1235 output_color(opt
, bol
, match
.rm_so
, line_color
);
1236 output_color(opt
, bol
+ match
.rm_so
,
1237 match
.rm_eo
- match
.rm_so
, match_color
);
1239 rest
-= match
.rm_eo
;
1240 eflags
= REG_NOTBOL
;
1244 output_color(opt
, bol
, rest
, line_color
);
1245 opt
->output(opt
, "\n", 1);
1252 * This lock protects access to the gitattributes machinery, which is
1255 pthread_mutex_t grep_attr_mutex
;
1257 static inline void grep_attr_lock(void)
1260 pthread_mutex_lock(&grep_attr_mutex
);
1263 static inline void grep_attr_unlock(void)
1266 pthread_mutex_unlock(&grep_attr_mutex
);
1270 * Same as git_attr_mutex, but protecting the thread-unsafe object db access.
1272 pthread_mutex_t grep_read_mutex
;
1275 #define grep_attr_lock()
1276 #define grep_attr_unlock()
1279 static int match_funcname(struct grep_opt
*opt
, struct grep_source
*gs
, char *bol
, char *eol
)
1281 xdemitconf_t
*xecfg
= opt
->priv
;
1282 if (xecfg
&& !xecfg
->find_func
) {
1283 grep_source_load_driver(gs
);
1284 if (gs
->driver
->funcname
.pattern
) {
1285 const struct userdiff_funcname
*pe
= &gs
->driver
->funcname
;
1286 xdiff_set_find_func(xecfg
, pe
->pattern
, pe
->cflags
);
1288 xecfg
= opt
->priv
= NULL
;
1294 return xecfg
->find_func(bol
, eol
- bol
, buf
, 1,
1295 xecfg
->find_func_priv
) >= 0;
1300 if (isalpha(*bol
) || *bol
== '_' || *bol
== '$')
1305 static void show_funcname_line(struct grep_opt
*opt
, struct grep_source
*gs
,
1306 char *bol
, unsigned lno
)
1308 while (bol
> gs
->buf
) {
1311 while (bol
> gs
->buf
&& bol
[-1] != '\n')
1315 if (lno
<= opt
->last_shown
)
1318 if (match_funcname(opt
, gs
, bol
, eol
)) {
1319 show_line(opt
, bol
, eol
, gs
->name
, lno
, '=');
1325 static void show_pre_context(struct grep_opt
*opt
, struct grep_source
*gs
,
1326 char *bol
, char *end
, unsigned lno
)
1328 unsigned cur
= lno
, from
= 1, funcname_lno
= 0;
1329 int funcname_needed
= !!opt
->funcname
;
1331 if (opt
->funcbody
&& !match_funcname(opt
, gs
, bol
, end
))
1332 funcname_needed
= 2;
1334 if (opt
->pre_context
< lno
)
1335 from
= lno
- opt
->pre_context
;
1336 if (from
<= opt
->last_shown
)
1337 from
= opt
->last_shown
+ 1;
1340 while (bol
> gs
->buf
&&
1341 cur
> (funcname_needed
== 2 ? opt
->last_shown
+ 1 : from
)) {
1344 while (bol
> gs
->buf
&& bol
[-1] != '\n')
1347 if (funcname_needed
&& match_funcname(opt
, gs
, bol
, eol
)) {
1349 funcname_needed
= 0;
1353 /* We need to look even further back to find a function signature. */
1354 if (opt
->funcname
&& funcname_needed
)
1355 show_funcname_line(opt
, gs
, bol
, cur
);
1359 char *eol
= bol
, sign
= (cur
== funcname_lno
) ? '=' : '-';
1361 while (*eol
!= '\n')
1363 show_line(opt
, bol
, eol
, gs
->name
, cur
, sign
);
1369 static int should_lookahead(struct grep_opt
*opt
)
1374 return 0; /* punt for too complex stuff */
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 */
1384 static int look_ahead(struct grep_opt
*opt
,
1385 unsigned long *left_p
,
1389 unsigned lno
= *lno_p
;
1392 char *sp
, *last_bol
;
1393 regoff_t earliest
= -1;
1395 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
1399 hit
= patmatch(p
, bol
, bol
+ *left_p
, &m
, 0);
1400 if (!hit
|| m
.rm_so
< 0 || m
.rm_eo
< 0)
1402 if (earliest
< 0 || m
.rm_so
< earliest
)
1407 *bol_p
= bol
+ *left_p
;
1411 for (sp
= bol
+ earliest
; bol
< sp
&& sp
[-1] != '\n'; sp
--)
1412 ; /* find the beginning of the line */
1415 for (sp
= bol
; sp
< last_bol
; sp
++) {
1419 *left_p
-= last_bol
- bol
;
1425 static int fill_textconv_grep(struct userdiff_driver
*driver
,
1426 struct grep_source
*gs
)
1428 struct diff_filespec
*df
;
1432 if (!driver
|| !driver
->textconv
)
1433 return grep_source_load(gs
);
1436 * The textconv interface is intimately tied to diff_filespecs, so we
1437 * have to pretend to be one. If we could unify the grep_source
1438 * and diff_filespec structs, this mess could just go away.
1440 df
= alloc_filespec(gs
->path
);
1442 case GREP_SOURCE_SHA1
:
1443 fill_filespec(df
, gs
->identifier
, 1, 0100644);
1445 case GREP_SOURCE_FILE
:
1446 fill_filespec(df
, null_sha1
, 0, 0100644);
1449 die("BUG: attempt to textconv something without a path?");
1453 * fill_textconv is not remotely thread-safe; it may load objects
1454 * behind the scenes, and it modifies the global diff tempfile
1458 size
= fill_textconv(driver
, df
, &buf
);
1463 * The normal fill_textconv usage by the diff machinery would just keep
1464 * the textconv'd buf separate from the diff_filespec. But much of the
1465 * grep code passes around a grep_source and assumes that its "buf"
1466 * pointer is the beginning of the thing we are searching. So let's
1467 * install our textconv'd version into the grep_source, taking care not
1468 * to leak any existing buffer.
1470 grep_source_clear_data(gs
);
1477 static int is_empty_line(const char *bol
, const char *eol
)
1479 while (bol
< eol
&& isspace(*bol
))
1484 static int grep_source_1(struct grep_opt
*opt
, struct grep_source
*gs
, int collect_hits
)
1487 char *peek_bol
= NULL
;
1490 unsigned last_hit
= 0;
1491 int binary_match_only
= 0;
1493 int try_lookahead
= 0;
1494 int show_function
= 0;
1495 struct userdiff_driver
*textconv
= NULL
;
1496 enum grep_context ctx
= GREP_CONTEXT_HEAD
;
1500 opt
->output
= std_output
;
1502 if (opt
->pre_context
|| opt
->post_context
|| opt
->file_break
||
1504 /* Show hunk marks, except for the first file. */
1505 if (opt
->last_shown
)
1506 opt
->show_hunk_mark
= 1;
1508 * If we're using threads then we can't easily identify
1509 * the first file. Always put hunk marks in that case
1510 * and skip the very first one later in work_done().
1512 if (opt
->output
!= std_output
)
1513 opt
->show_hunk_mark
= 1;
1515 opt
->last_shown
= 0;
1517 if (opt
->allow_textconv
) {
1518 grep_source_load_driver(gs
);
1520 * We might set up the shared textconv cache data here, which
1521 * is not thread-safe.
1524 textconv
= userdiff_get_textconv(gs
->driver
);
1529 * We know the result of a textconv is text, so we only have to care
1530 * about binary handling if we are not using it.
1533 switch (opt
->binary
) {
1534 case GREP_BINARY_DEFAULT
:
1535 if (grep_source_is_binary(gs
))
1536 binary_match_only
= 1;
1538 case GREP_BINARY_NOMATCH
:
1539 if (grep_source_is_binary(gs
))
1540 return 0; /* Assume unmatch */
1542 case GREP_BINARY_TEXT
:
1545 die("BUG: unknown binary handling mode");
1549 memset(&xecfg
, 0, sizeof(xecfg
));
1552 try_lookahead
= should_lookahead(opt
);
1554 if (fill_textconv_grep(textconv
, gs
) < 0)
1564 * look_ahead() skips quickly to the line that possibly
1565 * has the next hit; don't call it if we need to do
1566 * something more than just skipping the current line
1567 * in response to an unmatch for the current line. E.g.
1568 * inside a post-context window, we will show the current
1569 * line as a context around the previous hit when it
1574 && (show_function
||
1575 lno
<= last_hit
+ opt
->post_context
))
1576 && look_ahead(opt
, &left
, &lno
, &bol
))
1578 eol
= end_of_line(bol
, &left
);
1582 if ((ctx
== GREP_CONTEXT_HEAD
) && (eol
== bol
))
1583 ctx
= GREP_CONTEXT_BODY
;
1585 hit
= match_line(opt
, bol
, eol
, ctx
, collect_hits
);
1591 /* "grep -v -e foo -e bla" should list lines
1592 * that do not have either, so inversion should
1597 if (opt
->unmatch_name_only
) {
1604 if (opt
->status_only
)
1606 if (opt
->name_only
) {
1607 show_name(opt
, gs
->name
);
1612 if (binary_match_only
) {
1613 opt
->output(opt
, "Binary file ", 12);
1614 output_color(opt
, gs
->name
, strlen(gs
->name
),
1615 opt
->color_filename
);
1616 opt
->output(opt
, " matches\n", 9);
1619 /* Hit at this line. If we haven't shown the
1620 * pre-context lines, we would need to show them.
1622 if (opt
->pre_context
|| opt
->funcbody
)
1623 show_pre_context(opt
, gs
, bol
, eol
, lno
);
1624 else if (opt
->funcname
)
1625 show_funcname_line(opt
, gs
, bol
, lno
);
1626 show_line(opt
, bol
, eol
, gs
->name
, lno
, ':');
1632 if (show_function
&& (!peek_bol
|| peek_bol
< bol
)) {
1633 unsigned long peek_left
= left
;
1634 char *peek_eol
= eol
;
1637 * Trailing empty lines are not interesting.
1638 * Peek past them to see if they belong to the
1639 * body of the current function.
1642 while (is_empty_line(peek_bol
, peek_eol
)) {
1643 peek_bol
= peek_eol
+ 1;
1644 peek_eol
= end_of_line(peek_bol
, &peek_left
);
1647 if (match_funcname(opt
, gs
, peek_bol
, peek_eol
))
1650 if (show_function
||
1651 (last_hit
&& lno
<= last_hit
+ opt
->post_context
)) {
1652 /* If the last hit is within the post context,
1653 * we need to show this line.
1655 show_line(opt
, bol
, eol
, gs
->name
, lno
, '-');
1669 if (opt
->status_only
)
1671 if (opt
->unmatch_name_only
) {
1672 /* We did not see any hit, so we want to show this */
1673 show_name(opt
, gs
->name
);
1677 xdiff_clear_find_func(&xecfg
);
1681 * The real "grep -c foo *.c" gives many "bar.c:0" lines,
1682 * which feels mostly useless but sometimes useful. Maybe
1683 * make it another option? For now suppress them.
1685 if (opt
->count
&& count
) {
1687 if (opt
->pathname
) {
1688 output_color(opt
, gs
->name
, strlen(gs
->name
),
1689 opt
->color_filename
);
1690 output_sep(opt
, ':');
1692 xsnprintf(buf
, sizeof(buf
), "%u\n", count
);
1693 opt
->output(opt
, buf
, strlen(buf
));
1699 static void clr_hit_marker(struct grep_expr
*x
)
1701 /* All-hit markers are meaningful only at the very top level
1706 if (x
->node
!= GREP_NODE_OR
)
1708 x
->u
.binary
.left
->hit
= 0;
1709 x
= x
->u
.binary
.right
;
1713 static int chk_hit_marker(struct grep_expr
*x
)
1715 /* Top level nodes have hit markers. See if they all are hits */
1717 if (x
->node
!= GREP_NODE_OR
)
1719 if (!x
->u
.binary
.left
->hit
)
1721 x
= x
->u
.binary
.right
;
1725 int grep_source(struct grep_opt
*opt
, struct grep_source
*gs
)
1728 * we do not have to do the two-pass grep when we do not check
1729 * buffer-wide "all-match".
1731 if (!opt
->all_match
)
1732 return grep_source_1(opt
, gs
, 0);
1734 /* Otherwise the toplevel "or" terms hit a bit differently.
1735 * We first clear hit markers from them.
1737 clr_hit_marker(opt
->pattern_expression
);
1738 grep_source_1(opt
, gs
, 1);
1740 if (!chk_hit_marker(opt
->pattern_expression
))
1743 return grep_source_1(opt
, gs
, 0);
1746 int grep_buffer(struct grep_opt
*opt
, char *buf
, unsigned long size
)
1748 struct grep_source gs
;
1751 grep_source_init(&gs
, GREP_SOURCE_BUF
, NULL
, NULL
, NULL
);
1755 r
= grep_source(opt
, &gs
);
1757 grep_source_clear(&gs
);
1761 void grep_source_init(struct grep_source
*gs
, enum grep_source_type type
,
1762 const char *name
, const char *path
,
1763 const void *identifier
)
1766 gs
->name
= xstrdup_or_null(name
);
1767 gs
->path
= xstrdup_or_null(path
);
1773 case GREP_SOURCE_FILE
:
1774 gs
->identifier
= xstrdup(identifier
);
1776 case GREP_SOURCE_SUBMODULE
:
1778 gs
->identifier
= NULL
;
1783 * If the identifier is non-NULL (in the submodule case) it
1784 * will be a SHA1 that needs to be copied.
1786 case GREP_SOURCE_SHA1
:
1787 gs
->identifier
= xmalloc(20);
1788 hashcpy(gs
->identifier
, identifier
);
1790 case GREP_SOURCE_BUF
:
1791 gs
->identifier
= NULL
;
1796 void grep_source_clear(struct grep_source
*gs
)
1802 free(gs
->identifier
);
1803 gs
->identifier
= NULL
;
1804 grep_source_clear_data(gs
);
1807 void grep_source_clear_data(struct grep_source
*gs
)
1810 case GREP_SOURCE_FILE
:
1811 case GREP_SOURCE_SHA1
:
1812 case GREP_SOURCE_SUBMODULE
:
1817 case GREP_SOURCE_BUF
:
1818 /* leave user-provided buf intact */
1823 static int grep_source_load_sha1(struct grep_source
*gs
)
1825 enum object_type type
;
1828 gs
->buf
= read_sha1_file(gs
->identifier
, &type
, &gs
->size
);
1832 return error(_("'%s': unable to read %s"),
1834 sha1_to_hex(gs
->identifier
));
1838 static int grep_source_load_file(struct grep_source
*gs
)
1840 const char *filename
= gs
->identifier
;
1846 if (lstat(filename
, &st
) < 0) {
1848 if (errno
!= ENOENT
)
1849 error_errno(_("failed to stat '%s'"), filename
);
1852 if (!S_ISREG(st
.st_mode
))
1854 size
= xsize_t(st
.st_size
);
1855 i
= open(filename
, O_RDONLY
);
1858 data
= xmallocz(size
);
1859 if (st
.st_size
!= read_in_full(i
, data
, size
)) {
1860 error_errno(_("'%s': short read"), filename
);
1872 static int grep_source_load(struct grep_source
*gs
)
1878 case GREP_SOURCE_FILE
:
1879 return grep_source_load_file(gs
);
1880 case GREP_SOURCE_SHA1
:
1881 return grep_source_load_sha1(gs
);
1882 case GREP_SOURCE_BUF
:
1883 return gs
->buf
? 0 : -1;
1884 case GREP_SOURCE_SUBMODULE
:
1887 die("BUG: invalid grep_source type to load");
1890 void grep_source_load_driver(struct grep_source
*gs
)
1897 gs
->driver
= userdiff_find_by_path(gs
->path
);
1899 gs
->driver
= userdiff_find_by_name("default");
1903 static int grep_source_is_binary(struct grep_source
*gs
)
1905 grep_source_load_driver(gs
);
1906 if (gs
->driver
->binary
!= -1)
1907 return gs
->driver
->binary
;
1909 if (!grep_source_load(gs
))
1910 return buffer_is_binary(gs
->buf
, gs
->size
);