4 * Copyright (c) 2006 Junio C Hamano
11 #include "tree-walk.h"
13 #include "parse-options.h"
17 #ifndef NO_EXTERNAL_GREP
19 #define NO_EXTERNAL_GREP 0
21 #define NO_EXTERNAL_GREP 1
25 static char const * const grep_usage
[] = {
26 "git grep [options] [-e] <pattern> [<rev>...] [[--] path...]",
30 static int grep_config(const char *var
, const char *value
, void *cb
)
32 struct grep_opt
*opt
= cb
;
34 switch (userdiff_config(var
, value
)) {
40 if (!strcmp(var
, "color.grep")) {
41 opt
->color
= git_config_colorbool(var
, value
, -1);
44 if (!strcmp(var
, "color.grep.external"))
45 return git_config_string(&(opt
->color_external
), var
, value
);
46 if (!strcmp(var
, "color.grep.match")) {
48 return config_error_nonbool(var
);
49 color_parse(value
, var
, opt
->color_match
);
52 return git_color_default_config(var
, value
, cb
);
56 * Return non-zero if max_depth is negative or path has no more then max_depth
59 static int accept_subdir(const char *path
, int max_depth
)
64 while ((path
= strchr(path
, '/')) != NULL
) {
74 * Return non-zero if name is a subdirectory of match and is not too deep.
76 static int is_subdir(const char *name
, int namelen
,
77 const char *match
, int matchlen
, int max_depth
)
79 if (matchlen
> namelen
|| strncmp(name
, match
, matchlen
))
82 if (name
[matchlen
] == '\0') /* exact match */
85 if (!matchlen
|| match
[matchlen
-1] == '/' || name
[matchlen
] == '/')
86 return accept_subdir(name
+ matchlen
+ 1, max_depth
);
92 * git grep pathspecs are somewhat different from diff-tree pathspecs;
93 * pathname wildcards are allowed.
95 static int pathspec_matches(const char **paths
, const char *name
, int max_depth
)
98 if (!paths
|| !*paths
)
99 return accept_subdir(name
, max_depth
);
100 namelen
= strlen(name
);
101 for (i
= 0; paths
[i
]; i
++) {
102 const char *match
= paths
[i
];
103 int matchlen
= strlen(match
);
104 const char *cp
, *meta
;
106 if (is_subdir(name
, namelen
, match
, matchlen
, max_depth
))
108 if (!fnmatch(match
, name
, 0))
110 if (name
[namelen
-1] != '/')
113 /* We are being asked if the directory ("name") is worth
116 * Find the longest leading directory name that does
117 * not have metacharacter in the pathspec; the name
118 * we are looking at must overlap with that directory.
120 for (cp
= match
, meta
= NULL
; cp
- match
< matchlen
; cp
++) {
122 if (ch
== '*' || ch
== '[' || ch
== '?') {
128 meta
= cp
; /* fully literal */
130 if (namelen
<= meta
- match
) {
131 /* Looking at "Documentation/" and
132 * the pattern says "Documentation/howto/", or
133 * "Documentation/diff*.txt". The name we
134 * have should match prefix.
136 if (!memcmp(match
, name
, namelen
))
141 if (meta
- match
< namelen
) {
142 /* Looking at "Documentation/howto/" and
143 * the pattern says "Documentation/h*";
144 * match up to "Do.../h"; this avoids descending
145 * into "Documentation/technical/".
147 if (!memcmp(match
, name
, meta
- match
))
155 static int grep_sha1(struct grep_opt
*opt
, const unsigned char *sha1
, const char *name
, int tree_name_len
)
159 enum object_type type
;
160 char *to_free
= NULL
;
163 data
= read_sha1_file(sha1
, &type
, &size
);
165 error("'%s': unable to read %s", name
, sha1_to_hex(sha1
));
168 if (opt
->relative
&& opt
->prefix_length
) {
169 static char name_buf
[PATH_MAX
];
171 int name_len
= strlen(name
) - opt
->prefix_length
+ 1;
174 name
+= opt
->prefix_length
;
176 if (ARRAY_SIZE(name_buf
) <= name_len
)
177 cp
= to_free
= xmalloc(name_len
);
180 memcpy(cp
, name
, tree_name_len
);
181 strcpy(cp
+ tree_name_len
,
182 name
+ tree_name_len
+ opt
->prefix_length
);
186 hit
= grep_buffer(opt
, name
, data
, size
);
192 static int grep_file(struct grep_opt
*opt
, const char *filename
)
199 if (lstat(filename
, &st
) < 0) {
202 error("'%s': %s", filename
, strerror(errno
));
206 return 0; /* empty file -- no grep hit */
207 if (!S_ISREG(st
.st_mode
))
209 sz
= xsize_t(st
.st_size
);
210 i
= open(filename
, O_RDONLY
);
213 data
= xmalloc(sz
+ 1);
214 if (st
.st_size
!= read_in_full(i
, data
, sz
)) {
215 error("'%s': short read %s", filename
, strerror(errno
));
221 if (opt
->relative
&& opt
->prefix_length
)
222 filename
+= opt
->prefix_length
;
223 i
= grep_buffer(opt
, filename
, data
, sz
);
228 #if !NO_EXTERNAL_GREP
229 static int exec_grep(int argc
, const char **argv
)
239 execvp("grep", (char **) argv
);
242 while (waitpid(pid
, &status
, 0) < 0) {
247 if (WIFEXITED(status
)) {
248 if (!WEXITSTATUS(status
))
257 #define push_arg(a) do { \
258 if (nr < MAXARGS) argv[nr++] = (a); \
259 else die("maximum number of args exceeded"); \
263 * If you send a singleton filename to grep, it does not give
264 * the name of the file. GNU grep has "-H" but we would want
265 * that behaviour in a portable way.
267 * So we keep two pathnames in argv buffer unsent to grep in
268 * the main loop if we need to do more than one grep.
270 static int flush_grep(struct grep_opt
*opt
,
271 int argc
, int arg0
, const char **argv
, int *kept
)
274 int count
= argc
- arg0
;
275 const char *kept_0
= NULL
;
279 * Because we keep at least 2 paths in the call from
280 * the main loop (i.e. kept != NULL), and MAXARGS is
281 * far greater than 2, this usually is a call to
282 * conclude the grep. However, the user could attempt
283 * to overflow the argv buffer by giving too many
284 * options to leave very small number of real
285 * arguments even for the call in the main loop.
288 die("insanely many options to grep");
291 * If we have two or more paths, we do not have to do
292 * anything special, but we need to push /dev/null to
293 * get "-H" behaviour of GNU grep portably but when we
294 * are not doing "-l" nor "-L" nor "-c".
298 !opt
->unmatch_name_only
&&
300 argv
[argc
++] = "/dev/null";
307 * Called because we found many paths and haven't finished
308 * iterating over the cache yet. We keep two paths
309 * for the concluding call. argv[argc-2] and argv[argc-1]
310 * has the last two paths, so save the first one away,
311 * replace it with NULL while sending the list to grep,
312 * and recover them after we are done.
315 kept_0
= argv
[argc
-2];
320 if (opt
->pre_context
|| opt
->post_context
) {
322 * grep handles hunk marks between files, but we need to
323 * do that ourselves between multiple calls.
325 if (opt
->show_hunk_mark
)
326 write_or_die(1, "--\n", 3);
328 opt
->show_hunk_mark
= 1;
331 status
= exec_grep(argc
, argv
);
335 * Then recover them. Now the last arg is beyond the
336 * terminating NULL which is at argc, and the second
337 * from the last is what we saved away in kept_0
339 argv
[arg0
++] = kept_0
;
340 argv
[arg0
] = argv
[argc
+1];
345 static void grep_add_color(struct strbuf
*sb
, const char *escape_seq
)
347 size_t orig_len
= sb
->len
;
349 while (*escape_seq
) {
350 if (*escape_seq
== 'm')
351 strbuf_addch(sb
, ';');
352 else if (*escape_seq
!= '\033' && *escape_seq
!= '[')
353 strbuf_addch(sb
, *escape_seq
);
356 if (sb
->len
> orig_len
&& sb
->buf
[sb
->len
- 1] == ';')
357 strbuf_setlen(sb
, sb
->len
- 1);
360 static int has_skip_worktree_entry(struct grep_opt
*opt
, const char **paths
)
363 for (nr
= 0; nr
< active_nr
; nr
++) {
364 struct cache_entry
*ce
= active_cache
[nr
];
365 if (!S_ISREG(ce
->ce_mode
))
367 if (!pathspec_matches(paths
, ce
->name
, opt
->max_depth
))
369 if (ce_skip_worktree(ce
))
375 static int external_grep(struct grep_opt
*opt
, const char **paths
, int cached
)
377 int i
, nr
, argc
, hit
, len
, status
;
378 const char *argv
[MAXARGS
+1];
379 char randarg
[ARGBUF
];
380 char *argptr
= randarg
;
383 if (opt
->extended
|| (opt
->relative
&& opt
->prefix_length
)
384 || has_skip_worktree_entry(opt
, paths
))
394 if (opt
->regflags
& REG_EXTENDED
)
396 if (opt
->regflags
& REG_ICASE
)
398 if (opt
->binary
== GREP_BINARY_NOMATCH
)
400 if (opt
->word_regexp
)
404 if (opt
->unmatch_name_only
)
406 if (opt
->null_following_name
)
407 /* in GNU grep git's "-z" translates to "-Z" */
411 if (opt
->post_context
|| opt
->pre_context
) {
412 if (opt
->post_context
!= opt
->pre_context
) {
413 if (opt
->pre_context
) {
415 len
+= snprintf(argptr
, sizeof(randarg
)-len
,
416 "%u", opt
->pre_context
) + 1;
417 if (sizeof(randarg
) <= len
)
418 die("maximum length of args exceeded");
422 if (opt
->post_context
) {
424 len
+= snprintf(argptr
, sizeof(randarg
)-len
,
425 "%u", opt
->post_context
) + 1;
426 if (sizeof(randarg
) <= len
)
427 die("maximum length of args exceeded");
434 len
+= snprintf(argptr
, sizeof(randarg
)-len
,
435 "%u", opt
->post_context
) + 1;
436 if (sizeof(randarg
) <= len
)
437 die("maximum length of args exceeded");
442 for (p
= opt
->pattern_list
; p
; p
= p
->next
) {
444 push_arg(p
->pattern
);
447 struct strbuf sb
= STRBUF_INIT
;
449 grep_add_color(&sb
, opt
->color_match
);
450 setenv("GREP_COLOR", sb
.buf
, 1);
453 strbuf_addstr(&sb
, "mt=");
454 grep_add_color(&sb
, opt
->color_match
);
455 strbuf_addstr(&sb
, ":sl=:cx=:fn=:ln=:bn=:se=");
456 setenv("GREP_COLORS", sb
.buf
, 1);
460 if (opt
->color_external
&& strlen(opt
->color_external
) > 0)
461 push_arg(opt
->color_external
);
466 for (i
= 0; i
< active_nr
; i
++) {
467 struct cache_entry
*ce
= active_cache
[i
];
470 if (!S_ISREG(ce
->ce_mode
))
472 if (!pathspec_matches(paths
, ce
->name
, opt
->max_depth
))
475 if (name
[0] == '-') {
476 int len
= ce_namelen(ce
);
477 name
= xmalloc(len
+ 3);
478 memcpy(name
, "./", 2);
479 memcpy(name
+ 2, ce
->name
, len
+ 1);
482 if (MAXARGS
<= argc
) {
483 status
= flush_grep(opt
, argc
, nr
, argv
, &kept
);
491 } while (i
< active_nr
&&
492 !strcmp(ce
->name
, active_cache
[i
]->name
));
493 i
--; /* compensate for loop control */
497 status
= flush_grep(opt
, argc
, nr
, argv
, NULL
);
505 static int grep_cache(struct grep_opt
*opt
, const char **paths
, int cached
,
506 int external_grep_allowed
)
512 #if !NO_EXTERNAL_GREP
514 * Use the external "grep" command for the case where
515 * we grep through the checked-out files. It tends to
516 * be a lot more optimized
518 if (!cached
&& external_grep_allowed
) {
519 hit
= external_grep(opt
, paths
, cached
);
525 for (nr
= 0; nr
< active_nr
; nr
++) {
526 struct cache_entry
*ce
= active_cache
[nr
];
527 if (!S_ISREG(ce
->ce_mode
))
529 if (!pathspec_matches(paths
, ce
->name
, opt
->max_depth
))
532 * If CE_VALID is on, we assume worktree file and its cache entry
533 * are identical, even if worktree file has been modified, so use
534 * cache version instead
536 if (cached
|| (ce
->ce_flags
& CE_VALID
) || ce_skip_worktree(ce
)) {
539 hit
|= grep_sha1(opt
, ce
->sha1
, ce
->name
, 0);
542 hit
|= grep_file(opt
, ce
->name
);
546 } while (nr
< active_nr
&&
547 !strcmp(ce
->name
, active_cache
[nr
]->name
));
548 nr
--; /* compensate for loop control */
551 free_grep_patterns(opt
);
555 static int grep_tree(struct grep_opt
*opt
, const char **paths
,
556 struct tree_desc
*tree
,
557 const char *tree_name
, const char *base
)
561 struct name_entry entry
;
563 int tn_len
= strlen(tree_name
);
564 struct strbuf pathbuf
;
566 strbuf_init(&pathbuf
, PATH_MAX
+ tn_len
);
569 strbuf_add(&pathbuf
, tree_name
, tn_len
);
570 strbuf_addch(&pathbuf
, ':');
571 tn_len
= pathbuf
.len
;
573 strbuf_addstr(&pathbuf
, base
);
576 while (tree_entry(tree
, &entry
)) {
577 int te_len
= tree_entry_len(entry
.path
, entry
.sha1
);
579 strbuf_add(&pathbuf
, entry
.path
, te_len
);
581 if (S_ISDIR(entry
.mode
))
582 /* Match "abc/" against pathspec to
583 * decide if we want to descend into "abc"
586 strbuf_addch(&pathbuf
, '/');
588 down
= pathbuf
.buf
+ tn_len
;
589 if (!pathspec_matches(paths
, down
, opt
->max_depth
))
591 else if (S_ISREG(entry
.mode
))
592 hit
|= grep_sha1(opt
, entry
.sha1
, pathbuf
.buf
, tn_len
);
593 else if (S_ISDIR(entry
.mode
)) {
594 enum object_type type
;
595 struct tree_desc sub
;
599 data
= read_sha1_file(entry
.sha1
, &type
, &size
);
601 die("unable to read tree (%s)",
602 sha1_to_hex(entry
.sha1
));
603 init_tree_desc(&sub
, data
, size
);
604 hit
|= grep_tree(opt
, paths
, &sub
, tree_name
, down
);
608 strbuf_release(&pathbuf
);
612 static int grep_object(struct grep_opt
*opt
, const char **paths
,
613 struct object
*obj
, const char *name
)
615 if (obj
->type
== OBJ_BLOB
)
616 return grep_sha1(opt
, obj
->sha1
, name
, 0);
617 if (obj
->type
== OBJ_COMMIT
|| obj
->type
== OBJ_TREE
) {
618 struct tree_desc tree
;
622 data
= read_object_with_reference(obj
->sha1
, tree_type
,
625 die("unable to read tree (%s)", sha1_to_hex(obj
->sha1
));
626 init_tree_desc(&tree
, data
, size
);
627 hit
= grep_tree(opt
, paths
, &tree
, name
, "");
631 die("unable to grep from object of type %s", typename(obj
->type
));
634 static int context_callback(const struct option
*opt
, const char *arg
,
637 struct grep_opt
*grep_opt
= opt
->value
;
642 grep_opt
->pre_context
= grep_opt
->post_context
= 0;
645 value
= strtol(arg
, (char **)&endp
, 10);
647 return error("switch `%c' expects a numerical value",
650 grep_opt
->pre_context
= grep_opt
->post_context
= value
;
654 static int file_callback(const struct option
*opt
, const char *arg
, int unset
)
656 struct grep_opt
*grep_opt
= opt
->value
;
661 patterns
= fopen(arg
, "r");
663 die_errno("cannot open '%s'", arg
);
664 while (strbuf_getline(&sb
, patterns
, '\n') == 0) {
665 /* ignore empty line like grep does */
668 append_grep_pattern(grep_opt
, strbuf_detach(&sb
, NULL
), arg
,
669 ++lno
, GREP_PATTERN
);
676 static int not_callback(const struct option
*opt
, const char *arg
, int unset
)
678 struct grep_opt
*grep_opt
= opt
->value
;
679 append_grep_pattern(grep_opt
, "--not", "command line", 0, GREP_NOT
);
683 static int and_callback(const struct option
*opt
, const char *arg
, int unset
)
685 struct grep_opt
*grep_opt
= opt
->value
;
686 append_grep_pattern(grep_opt
, "--and", "command line", 0, GREP_AND
);
690 static int open_callback(const struct option
*opt
, const char *arg
, int unset
)
692 struct grep_opt
*grep_opt
= opt
->value
;
693 append_grep_pattern(grep_opt
, "(", "command line", 0, GREP_OPEN_PAREN
);
697 static int close_callback(const struct option
*opt
, const char *arg
, int unset
)
699 struct grep_opt
*grep_opt
= opt
->value
;
700 append_grep_pattern(grep_opt
, ")", "command line", 0, GREP_CLOSE_PAREN
);
704 static int pattern_callback(const struct option
*opt
, const char *arg
,
707 struct grep_opt
*grep_opt
= opt
->value
;
708 append_grep_pattern(grep_opt
, arg
, "-e option", 0, GREP_PATTERN
);
712 static int help_callback(const struct option
*opt
, const char *arg
, int unset
)
717 int cmd_grep(int argc
, const char **argv
, const char *prefix
)
721 int external_grep_allowed
= 1;
722 int seen_dashdash
= 0;
724 struct object_array list
= { 0, 0, NULL
};
725 const char **paths
= NULL
;
728 struct option options
[] = {
729 OPT_BOOLEAN(0, "cached", &cached
,
730 "search in index instead of in the work tree"),
732 OPT_BOOLEAN('v', "invert-match", &opt
.invert
,
733 "show non-matching lines"),
734 OPT_BIT('i', "ignore-case", &opt
.regflags
,
735 "case insensitive matching", REG_ICASE
),
736 OPT_BOOLEAN('w', "word-regexp", &opt
.word_regexp
,
737 "match patterns only at word boundaries"),
738 OPT_SET_INT('a', "text", &opt
.binary
,
739 "process binary files as text", GREP_BINARY_TEXT
),
740 OPT_SET_INT('I', NULL
, &opt
.binary
,
741 "don't match patterns in binary files",
742 GREP_BINARY_NOMATCH
),
743 { OPTION_INTEGER
, 0, "max-depth", &opt
.max_depth
, "depth",
744 "descend at most <depth> levels", PARSE_OPT_NONEG
,
747 OPT_BIT('E', "extended-regexp", &opt
.regflags
,
748 "use extended POSIX regular expressions", REG_EXTENDED
),
749 OPT_NEGBIT('G', "basic-regexp", &opt
.regflags
,
750 "use basic POSIX regular expressions (default)",
752 OPT_BOOLEAN('F', "fixed-strings", &opt
.fixed
,
753 "interpret patterns as fixed strings"),
755 OPT_BOOLEAN('n', NULL
, &opt
.linenum
, "show line numbers"),
756 OPT_NEGBIT('h', NULL
, &opt
.pathname
, "don't show filenames", 1),
757 OPT_BIT('H', NULL
, &opt
.pathname
, "show filenames", 1),
758 OPT_NEGBIT(0, "full-name", &opt
.relative
,
759 "show filenames relative to top directory", 1),
760 OPT_BOOLEAN('l', "files-with-matches", &opt
.name_only
,
761 "show only filenames instead of matching lines"),
762 OPT_BOOLEAN(0, "name-only", &opt
.name_only
,
763 "synonym for --files-with-matches"),
764 OPT_BOOLEAN('L', "files-without-match",
765 &opt
.unmatch_name_only
,
766 "show only the names of files without match"),
767 OPT_BOOLEAN('z', "null", &opt
.null_following_name
,
768 "print NUL after filenames"),
769 OPT_BOOLEAN('c', "count", &opt
.count
,
770 "show the number of matches instead of matching lines"),
771 OPT_SET_INT(0, "color", &opt
.color
, "highlight matches", 1),
773 OPT_CALLBACK('C', NULL
, &opt
, "n",
774 "show <n> context lines before and after matches",
776 OPT_INTEGER('B', NULL
, &opt
.pre_context
,
777 "show <n> context lines before matches"),
778 OPT_INTEGER('A', NULL
, &opt
.post_context
,
779 "show <n> context lines after matches"),
780 OPT_NUMBER_CALLBACK(&opt
, "shortcut for -C NUM",
782 OPT_BOOLEAN('p', "show-function", &opt
.funcname
,
783 "show a line with the function name before matches"),
785 OPT_CALLBACK('f', NULL
, &opt
, "file",
786 "read patterns from file", file_callback
),
787 { OPTION_CALLBACK
, 'e', NULL
, &opt
, "pattern",
788 "match <pattern>", PARSE_OPT_NONEG
, pattern_callback
},
789 { OPTION_CALLBACK
, 0, "and", &opt
, NULL
,
790 "combine patterns specified with -e",
791 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, and_callback
},
792 OPT_BOOLEAN(0, "or", &dummy
, ""),
793 { OPTION_CALLBACK
, 0, "not", &opt
, NULL
, "",
794 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, not_callback
},
795 { OPTION_CALLBACK
, '(', NULL
, &opt
, NULL
, "",
796 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
798 { OPTION_CALLBACK
, ')', NULL
, &opt
, NULL
, "",
799 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
801 OPT_BOOLEAN(0, "all-match", &opt
.all_match
,
802 "show only matches from files that match all patterns"),
805 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed
,
806 "allow calling of grep(1) (ignored by this build)"),
808 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed
,
809 "allow calling of grep(1) (default)"),
811 { OPTION_CALLBACK
, 0, "help-all", &options
, NULL
, "show usage",
812 PARSE_OPT_HIDDEN
| PARSE_OPT_NOARG
, help_callback
},
816 memset(&opt
, 0, sizeof(opt
));
817 opt
.prefix_length
= (prefix
&& *prefix
) ? strlen(prefix
) : 0;
820 opt
.pattern_tail
= &opt
.pattern_list
;
821 opt
.regflags
= REG_NEWLINE
;
824 strcpy(opt
.color_match
, GIT_COLOR_RED GIT_COLOR_BOLD
);
826 git_config(grep_config
, &opt
);
828 opt
.color
= git_use_color_default
;
831 * If there is no -- then the paths must exist in the working
832 * tree. If there is no explicit pattern specified with -e or
833 * -f, we take the first unrecognized non option to be the
834 * pattern, but then what follows it must be zero or more
835 * valid refs up to the -- (if exists), and then existing
836 * paths. If there is an explicit pattern, then the first
837 * unrecognized non option is the beginning of the refs list
838 * that continues up to the -- (if exists), and then paths.
840 argc
= parse_options(argc
, argv
, prefix
, options
, grep_usage
,
841 PARSE_OPT_KEEP_DASHDASH
|
842 PARSE_OPT_STOP_AT_NON_OPTION
|
843 PARSE_OPT_NO_INTERNAL_HELP
);
845 /* First unrecognized non-option token */
846 if (argc
> 0 && !opt
.pattern_list
) {
847 append_grep_pattern(&opt
, argv
[0], "command line", 0,
853 if ((opt
.color
&& !opt
.color_external
) || opt
.funcname
)
854 external_grep_allowed
= 0;
855 if (!opt
.pattern_list
)
856 die("no pattern given.");
857 if ((opt
.regflags
!= REG_NEWLINE
) && opt
.fixed
)
858 die("cannot mix --fixed-strings and regexp");
859 compile_grep_patterns(&opt
);
861 /* Check revs and then paths */
862 for (i
= 0; i
< argc
; i
++) {
863 const char *arg
= argv
[i
];
864 unsigned char sha1
[20];
866 if (!get_sha1(arg
, sha1
)) {
867 struct object
*object
= parse_object(sha1
);
869 die("bad object %s", arg
);
870 add_object_array(object
, arg
, &list
);
873 if (!strcmp(arg
, "--")) {
880 /* The rest are paths */
881 if (!seen_dashdash
) {
883 for (j
= i
; j
< argc
; j
++)
884 verify_filename(prefix
, argv
[j
]);
888 paths
= get_pathspec(prefix
, argv
+ i
);
889 if (opt
.prefix_length
&& opt
.relative
) {
890 /* Make sure we do not get outside of paths */
891 for (i
= 0; paths
[i
]; i
++)
892 if (strncmp(prefix
, paths
[i
], opt
.prefix_length
))
893 die("git grep: cannot generate relative filenames containing '..'");
897 paths
= xcalloc(2, sizeof(const char *));
905 return !grep_cache(&opt
, paths
, cached
, external_grep_allowed
);
909 die("both --cached and trees are given.");
911 for (i
= 0; i
< list
.nr
; i
++) {
912 struct object
*real_obj
;
913 real_obj
= deref_tag(list
.objects
[i
].item
, NULL
, 0);
914 if (grep_object(&opt
, paths
, real_obj
, list
.objects
[i
].name
))
917 free_grep_patterns(&opt
);