4 * Copyright (c) 2006 Junio C Hamano
11 #include "tree-walk.h"
13 #include "parse-options.h"
14 #include "string-list.h"
15 #include "run-command.h"
20 #include "thread-utils.h"
22 static char const * const grep_usage
[] = {
23 "git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]",
27 static int use_threads
= 1;
31 static pthread_t threads
[THREADS
];
33 static void *load_sha1(const unsigned char *sha1
, unsigned long *size
,
35 static void *load_file(const char *filename
, size_t *sz
);
37 enum work_type
{WORK_SHA1
, WORK_FILE
};
39 /* We use one producer thread and THREADS consumer
40 * threads. The producer adds struct work_items to 'todo' and the
41 * consumers pick work items from the same array.
47 /* if type == WORK_SHA1, then 'identifier' is a SHA1,
48 * otherwise type == WORK_FILE, and 'identifier' is a NUL
49 * terminated filename.
56 /* In the range [todo_done, todo_start) in 'todo' we have work_items
57 * that have been or are processed by a consumer thread. We haven't
58 * written the result for these to stdout yet.
60 * The work_items in [todo_start, todo_end) are waiting to be picked
61 * up by a consumer thread.
63 * The ranges are modulo TODO_SIZE.
66 static struct work_item todo
[TODO_SIZE
];
67 static int todo_start
;
71 /* Has all work items been added? */
72 static int all_work_added
;
74 /* This lock protects all the variables above. */
75 static pthread_mutex_t grep_mutex
;
77 /* Used to serialize calls to read_sha1_file. */
78 static pthread_mutex_t read_sha1_mutex
;
80 #define grep_lock() pthread_mutex_lock(&grep_mutex)
81 #define grep_unlock() pthread_mutex_unlock(&grep_mutex)
82 #define read_sha1_lock() pthread_mutex_lock(&read_sha1_mutex)
83 #define read_sha1_unlock() pthread_mutex_unlock(&read_sha1_mutex)
85 /* Signalled when a new work_item is added to todo. */
86 static pthread_cond_t cond_add
;
88 /* Signalled when the result from one work_item is written to
91 static pthread_cond_t cond_write
;
93 /* Signalled when we are finished with everything. */
94 static pthread_cond_t cond_result
;
96 static int skip_first_line
;
98 static void add_work(enum work_type type
, char *name
, void *id
)
102 while ((todo_end
+1) % ARRAY_SIZE(todo
) == todo_done
) {
103 pthread_cond_wait(&cond_write
, &grep_mutex
);
106 todo
[todo_end
].type
= type
;
107 todo
[todo_end
].name
= name
;
108 todo
[todo_end
].identifier
= id
;
109 todo
[todo_end
].done
= 0;
110 strbuf_reset(&todo
[todo_end
].out
);
111 todo_end
= (todo_end
+ 1) % ARRAY_SIZE(todo
);
113 pthread_cond_signal(&cond_add
);
117 static struct work_item
*get_work(void)
119 struct work_item
*ret
;
122 while (todo_start
== todo_end
&& !all_work_added
) {
123 pthread_cond_wait(&cond_add
, &grep_mutex
);
126 if (todo_start
== todo_end
&& all_work_added
) {
129 ret
= &todo
[todo_start
];
130 todo_start
= (todo_start
+ 1) % ARRAY_SIZE(todo
);
136 static void grep_sha1_async(struct grep_opt
*opt
, char *name
,
137 const unsigned char *sha1
)
142 add_work(WORK_SHA1
, name
, s
);
145 static void grep_file_async(struct grep_opt
*opt
, char *name
,
146 const char *filename
)
148 add_work(WORK_FILE
, name
, xstrdup(filename
));
151 static void work_done(struct work_item
*w
)
157 old_done
= todo_done
;
158 for(; todo
[todo_done
].done
&& todo_done
!= todo_start
;
159 todo_done
= (todo_done
+1) % ARRAY_SIZE(todo
)) {
160 w
= &todo
[todo_done
];
162 const char *p
= w
->out
.buf
;
163 size_t len
= w
->out
.len
;
165 /* Skip the leading hunk mark of the first file. */
166 if (skip_first_line
) {
175 write_or_die(1, p
, len
);
181 if (old_done
!= todo_done
)
182 pthread_cond_signal(&cond_write
);
184 if (all_work_added
&& todo_done
== todo_end
)
185 pthread_cond_signal(&cond_result
);
190 static void *run(void *arg
)
193 struct grep_opt
*opt
= arg
;
196 struct work_item
*w
= get_work();
200 opt
->output_priv
= w
;
201 if (w
->type
== WORK_SHA1
) {
203 void* data
= load_sha1(w
->identifier
, &sz
, w
->name
);
206 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
209 } else if (w
->type
== WORK_FILE
) {
211 void* data
= load_file(w
->identifier
, &sz
);
213 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
222 free_grep_patterns(arg
);
225 return (void*) (intptr_t) hit
;
228 static void strbuf_out(struct grep_opt
*opt
, const void *buf
, size_t size
)
230 struct work_item
*w
= opt
->output_priv
;
231 strbuf_add(&w
->out
, buf
, size
);
234 static void start_threads(struct grep_opt
*opt
)
238 pthread_mutex_init(&grep_mutex
, NULL
);
239 pthread_mutex_init(&read_sha1_mutex
, NULL
);
240 pthread_cond_init(&cond_add
, NULL
);
241 pthread_cond_init(&cond_write
, NULL
);
242 pthread_cond_init(&cond_result
, NULL
);
244 for (i
= 0; i
< ARRAY_SIZE(todo
); i
++) {
245 strbuf_init(&todo
[i
].out
, 0);
248 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
250 struct grep_opt
*o
= grep_opt_dup(opt
);
251 o
->output
= strbuf_out
;
252 compile_grep_patterns(o
);
253 err
= pthread_create(&threads
[i
], NULL
, run
, o
);
256 die(_("grep: failed to create thread: %s"),
261 static int wait_all(void)
269 /* Wait until all work is done. */
270 while (todo_done
!= todo_end
)
271 pthread_cond_wait(&cond_result
, &grep_mutex
);
273 /* Wake up all the consumer threads so they can see that there
274 * is no more work to do.
276 pthread_cond_broadcast(&cond_add
);
279 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
281 pthread_join(threads
[i
], &h
);
282 hit
|= (int) (intptr_t) h
;
285 pthread_mutex_destroy(&grep_mutex
);
286 pthread_mutex_destroy(&read_sha1_mutex
);
287 pthread_cond_destroy(&cond_add
);
288 pthread_cond_destroy(&cond_write
);
289 pthread_cond_destroy(&cond_result
);
293 #else /* !NO_PTHREADS */
294 #define read_sha1_lock()
295 #define read_sha1_unlock()
297 static int wait_all(void)
303 static int grep_config(const char *var
, const char *value
, void *cb
)
305 struct grep_opt
*opt
= cb
;
308 switch (userdiff_config(var
, value
)) {
314 if (!strcmp(var
, "grep.extendedregexp")) {
315 if (git_config_bool(var
, value
))
316 opt
->regflags
|= REG_EXTENDED
;
318 opt
->regflags
&= ~REG_EXTENDED
;
322 if (!strcmp(var
, "grep.linenumber")) {
323 opt
->linenum
= git_config_bool(var
, value
);
327 if (!strcmp(var
, "color.grep"))
328 opt
->color
= git_config_colorbool(var
, value
);
329 else if (!strcmp(var
, "color.grep.context"))
330 color
= opt
->color_context
;
331 else if (!strcmp(var
, "color.grep.filename"))
332 color
= opt
->color_filename
;
333 else if (!strcmp(var
, "color.grep.function"))
334 color
= opt
->color_function
;
335 else if (!strcmp(var
, "color.grep.linenumber"))
336 color
= opt
->color_lineno
;
337 else if (!strcmp(var
, "color.grep.match"))
338 color
= opt
->color_match
;
339 else if (!strcmp(var
, "color.grep.selected"))
340 color
= opt
->color_selected
;
341 else if (!strcmp(var
, "color.grep.separator"))
342 color
= opt
->color_sep
;
344 return git_color_default_config(var
, value
, cb
);
347 return config_error_nonbool(var
);
348 color_parse(value
, var
, color
);
353 static void *lock_and_read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
359 data
= read_sha1_file(sha1
, type
, size
);
362 data
= read_sha1_file(sha1
, type
, size
);
367 static void *load_sha1(const unsigned char *sha1
, unsigned long *size
,
370 enum object_type type
;
371 void *data
= lock_and_read_sha1_file(sha1
, &type
, size
);
374 error(_("'%s': unable to read %s"), name
, sha1_to_hex(sha1
));
379 static int grep_sha1(struct grep_opt
*opt
, const unsigned char *sha1
,
380 const char *filename
, int tree_name_len
)
382 struct strbuf pathbuf
= STRBUF_INIT
;
385 if (opt
->relative
&& opt
->prefix_length
) {
386 quote_path_relative(filename
+ tree_name_len
, -1, &pathbuf
,
388 strbuf_insert(&pathbuf
, 0, filename
, tree_name_len
);
390 strbuf_addstr(&pathbuf
, filename
);
393 name
= strbuf_detach(&pathbuf
, NULL
);
397 grep_sha1_async(opt
, name
, sha1
);
404 void *data
= load_sha1(sha1
, &sz
, name
);
408 hit
= grep_buffer(opt
, name
, data
, sz
);
416 static void *load_file(const char *filename
, size_t *sz
)
422 if (lstat(filename
, &st
) < 0) {
425 error(_("'%s': %s"), filename
, strerror(errno
));
428 if (!S_ISREG(st
.st_mode
))
430 *sz
= xsize_t(st
.st_size
);
431 i
= open(filename
, O_RDONLY
);
434 data
= xmalloc(*sz
+ 1);
435 if (st
.st_size
!= read_in_full(i
, data
, *sz
)) {
436 error(_("'%s': short read %s"), filename
, strerror(errno
));
446 static int grep_file(struct grep_opt
*opt
, const char *filename
)
448 struct strbuf buf
= STRBUF_INIT
;
451 if (opt
->relative
&& opt
->prefix_length
)
452 quote_path_relative(filename
, -1, &buf
, opt
->prefix
);
454 strbuf_addstr(&buf
, filename
);
455 name
= strbuf_detach(&buf
, NULL
);
459 grep_file_async(opt
, name
, filename
);
466 void *data
= load_file(filename
, &sz
);
470 hit
= grep_buffer(opt
, name
, data
, sz
);
478 static void append_path(struct grep_opt
*opt
, const void *data
, size_t len
)
480 struct string_list
*path_list
= opt
->output_priv
;
482 if (len
== 1 && *(const char *)data
== '\0')
484 string_list_append(path_list
, xstrndup(data
, len
));
487 static void run_pager(struct grep_opt
*opt
, const char *prefix
)
489 struct string_list
*path_list
= opt
->output_priv
;
490 const char **argv
= xmalloc(sizeof(const char *) * (path_list
->nr
+ 1));
493 for (i
= 0; i
< path_list
->nr
; i
++)
494 argv
[i
] = path_list
->items
[i
].string
;
495 argv
[path_list
->nr
] = NULL
;
497 if (prefix
&& chdir(prefix
))
498 die(_("Failed to chdir: %s"), prefix
);
499 status
= run_command_v_opt(argv
, RUN_USING_SHELL
);
505 static int grep_cache(struct grep_opt
*opt
, const struct pathspec
*pathspec
, int cached
)
511 for (nr
= 0; nr
< active_nr
; nr
++) {
512 struct cache_entry
*ce
= active_cache
[nr
];
513 if (!S_ISREG(ce
->ce_mode
))
515 if (!match_pathspec_depth(pathspec
, ce
->name
, ce_namelen(ce
), 0, NULL
))
518 * If CE_VALID is on, we assume worktree file and its cache entry
519 * are identical, even if worktree file has been modified, so use
520 * cache version instead
522 if (cached
|| (ce
->ce_flags
& CE_VALID
) || ce_skip_worktree(ce
)) {
525 hit
|= grep_sha1(opt
, ce
->sha1
, ce
->name
, 0);
528 hit
|= grep_file(opt
, ce
->name
);
532 } while (nr
< active_nr
&&
533 !strcmp(ce
->name
, active_cache
[nr
]->name
));
534 nr
--; /* compensate for loop control */
536 if (hit
&& opt
->status_only
)
542 static int grep_tree(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
543 struct tree_desc
*tree
, struct strbuf
*base
, int tn_len
)
546 enum interesting match
= entry_not_interesting
;
547 struct name_entry entry
;
548 int old_baselen
= base
->len
;
550 while (tree_entry(tree
, &entry
)) {
551 int te_len
= tree_entry_len(&entry
);
553 if (match
!= all_entries_interesting
) {
554 match
= tree_entry_interesting(&entry
, base
, tn_len
, pathspec
);
555 if (match
== all_entries_not_interesting
)
557 if (match
== entry_not_interesting
)
561 strbuf_add(base
, entry
.path
, te_len
);
563 if (S_ISREG(entry
.mode
)) {
564 hit
|= grep_sha1(opt
, entry
.sha1
, base
->buf
, tn_len
);
566 else if (S_ISDIR(entry
.mode
)) {
567 enum object_type type
;
568 struct tree_desc sub
;
572 data
= lock_and_read_sha1_file(entry
.sha1
, &type
, &size
);
574 die(_("unable to read tree (%s)"),
575 sha1_to_hex(entry
.sha1
));
577 strbuf_addch(base
, '/');
578 init_tree_desc(&sub
, data
, size
);
579 hit
|= grep_tree(opt
, pathspec
, &sub
, base
, tn_len
);
582 strbuf_setlen(base
, old_baselen
);
584 if (hit
&& opt
->status_only
)
590 static int grep_object(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
591 struct object
*obj
, const char *name
)
593 if (obj
->type
== OBJ_BLOB
)
594 return grep_sha1(opt
, obj
->sha1
, name
, 0);
595 if (obj
->type
== OBJ_COMMIT
|| obj
->type
== OBJ_TREE
) {
596 struct tree_desc tree
;
603 data
= read_object_with_reference(obj
->sha1
, tree_type
,
608 die(_("unable to read tree (%s)"), sha1_to_hex(obj
->sha1
));
610 len
= name
? strlen(name
) : 0;
611 strbuf_init(&base
, PATH_MAX
+ len
+ 1);
613 strbuf_add(&base
, name
, len
);
614 strbuf_addch(&base
, ':');
616 init_tree_desc(&tree
, data
, size
);
617 hit
= grep_tree(opt
, pathspec
, &tree
, &base
, base
.len
);
618 strbuf_release(&base
);
622 die(_("unable to grep from object of type %s"), typename(obj
->type
));
625 static int grep_objects(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
626 const struct object_array
*list
)
630 const unsigned int nr
= list
->nr
;
632 for (i
= 0; i
< nr
; i
++) {
633 struct object
*real_obj
;
634 real_obj
= deref_tag(list
->objects
[i
].item
, NULL
, 0);
635 if (grep_object(opt
, pathspec
, real_obj
, list
->objects
[i
].name
)) {
637 if (opt
->status_only
)
644 static int grep_directory(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
647 struct dir_struct dir
;
650 memset(&dir
, 0, sizeof(dir
));
652 setup_standard_excludes(&dir
);
654 fill_directory(&dir
, pathspec
->raw
);
655 for (i
= 0; i
< dir
.nr
; i
++) {
656 const char *name
= dir
.entries
[i
]->name
;
657 int namelen
= strlen(name
);
658 if (!match_pathspec_depth(pathspec
, name
, namelen
, 0, NULL
))
660 hit
|= grep_file(opt
, dir
.entries
[i
]->name
);
661 if (hit
&& opt
->status_only
)
667 static int context_callback(const struct option
*opt
, const char *arg
,
670 struct grep_opt
*grep_opt
= opt
->value
;
675 grep_opt
->pre_context
= grep_opt
->post_context
= 0;
678 value
= strtol(arg
, (char **)&endp
, 10);
680 return error(_("switch `%c' expects a numerical value"),
683 grep_opt
->pre_context
= grep_opt
->post_context
= value
;
687 static int file_callback(const struct option
*opt
, const char *arg
, int unset
)
689 struct grep_opt
*grep_opt
= opt
->value
;
690 int from_stdin
= !strcmp(arg
, "-");
693 struct strbuf sb
= STRBUF_INIT
;
695 patterns
= from_stdin
? stdin
: fopen(arg
, "r");
697 die_errno(_("cannot open '%s'"), arg
);
698 while (strbuf_getline(&sb
, patterns
, '\n') == 0) {
702 /* ignore empty line like grep does */
706 s
= strbuf_detach(&sb
, &len
);
707 append_grep_pat(grep_opt
, s
, len
, arg
, ++lno
, GREP_PATTERN
);
715 static int not_callback(const struct option
*opt
, const char *arg
, int unset
)
717 struct grep_opt
*grep_opt
= opt
->value
;
718 append_grep_pattern(grep_opt
, "--not", "command line", 0, GREP_NOT
);
722 static int and_callback(const struct option
*opt
, const char *arg
, int unset
)
724 struct grep_opt
*grep_opt
= opt
->value
;
725 append_grep_pattern(grep_opt
, "--and", "command line", 0, GREP_AND
);
729 static int open_callback(const struct option
*opt
, const char *arg
, int unset
)
731 struct grep_opt
*grep_opt
= opt
->value
;
732 append_grep_pattern(grep_opt
, "(", "command line", 0, GREP_OPEN_PAREN
);
736 static int close_callback(const struct option
*opt
, const char *arg
, int unset
)
738 struct grep_opt
*grep_opt
= opt
->value
;
739 append_grep_pattern(grep_opt
, ")", "command line", 0, GREP_CLOSE_PAREN
);
743 static int pattern_callback(const struct option
*opt
, const char *arg
,
746 struct grep_opt
*grep_opt
= opt
->value
;
747 append_grep_pattern(grep_opt
, arg
, "-e option", 0, GREP_PATTERN
);
751 static int help_callback(const struct option
*opt
, const char *arg
, int unset
)
756 int cmd_grep(int argc
, const char **argv
, const char *prefix
)
759 int cached
= 0, untracked
= 0, opt_exclude
= -1;
760 int seen_dashdash
= 0;
761 int external_grep_allowed__ignored
;
762 const char *show_in_pager
= NULL
, *default_pager
= "dummy";
764 struct object_array list
= OBJECT_ARRAY_INIT
;
765 const char **paths
= NULL
;
766 struct pathspec pathspec
;
767 struct string_list path_list
= STRING_LIST_INIT_NODUP
;
772 pattern_type_unspecified
= 0,
778 int pattern_type
= pattern_type_unspecified
;
780 struct option options
[] = {
781 OPT_BOOLEAN(0, "cached", &cached
,
782 "search in index instead of in the work tree"),
783 { OPTION_BOOLEAN
, 0, "index", &use_index
, NULL
,
784 "finds in contents not managed by git",
785 PARSE_OPT_NOARG
| PARSE_OPT_NEGHELP
},
786 OPT_BOOLEAN(0, "untracked", &untracked
,
787 "search in both tracked and untracked files"),
788 OPT_SET_INT(0, "exclude-standard", &opt_exclude
,
789 "search also in ignored files", 1),
791 OPT_BOOLEAN('v', "invert-match", &opt
.invert
,
792 "show non-matching lines"),
793 OPT_BOOLEAN('i', "ignore-case", &opt
.ignore_case
,
794 "case insensitive matching"),
795 OPT_BOOLEAN('w', "word-regexp", &opt
.word_regexp
,
796 "match patterns only at word boundaries"),
797 OPT_SET_INT('a', "text", &opt
.binary
,
798 "process binary files as text", GREP_BINARY_TEXT
),
799 OPT_SET_INT('I', NULL
, &opt
.binary
,
800 "don't match patterns in binary files",
801 GREP_BINARY_NOMATCH
),
802 { OPTION_INTEGER
, 0, "max-depth", &opt
.max_depth
, "depth",
803 "descend at most <depth> levels", PARSE_OPT_NONEG
,
806 OPT_SET_INT('E', "extended-regexp", &pattern_type
,
807 "use extended POSIX regular expressions",
809 OPT_SET_INT('G', "basic-regexp", &pattern_type
,
810 "use basic POSIX regular expressions (default)",
812 OPT_SET_INT('F', "fixed-strings", &pattern_type
,
813 "interpret patterns as fixed strings",
815 OPT_SET_INT('P', "perl-regexp", &pattern_type
,
816 "use Perl-compatible regular expressions",
819 OPT_BOOLEAN('n', "line-number", &opt
.linenum
, "show line numbers"),
820 OPT_NEGBIT('h', NULL
, &opt
.pathname
, "don't show filenames", 1),
821 OPT_BIT('H', NULL
, &opt
.pathname
, "show filenames", 1),
822 OPT_NEGBIT(0, "full-name", &opt
.relative
,
823 "show filenames relative to top directory", 1),
824 OPT_BOOLEAN('l', "files-with-matches", &opt
.name_only
,
825 "show only filenames instead of matching lines"),
826 OPT_BOOLEAN(0, "name-only", &opt
.name_only
,
827 "synonym for --files-with-matches"),
828 OPT_BOOLEAN('L', "files-without-match",
829 &opt
.unmatch_name_only
,
830 "show only the names of files without match"),
831 OPT_BOOLEAN('z', "null", &opt
.null_following_name
,
832 "print NUL after filenames"),
833 OPT_BOOLEAN('c', "count", &opt
.count
,
834 "show the number of matches instead of matching lines"),
835 OPT__COLOR(&opt
.color
, "highlight matches"),
836 OPT_BOOLEAN(0, "break", &opt
.file_break
,
837 "print empty line between matches from different files"),
838 OPT_BOOLEAN(0, "heading", &opt
.heading
,
839 "show filename only once above matches from same file"),
841 OPT_CALLBACK('C', "context", &opt
, "n",
842 "show <n> context lines before and after matches",
844 OPT_INTEGER('B', "before-context", &opt
.pre_context
,
845 "show <n> context lines before matches"),
846 OPT_INTEGER('A', "after-context", &opt
.post_context
,
847 "show <n> context lines after matches"),
848 OPT_NUMBER_CALLBACK(&opt
, "shortcut for -C NUM",
850 OPT_BOOLEAN('p', "show-function", &opt
.funcname
,
851 "show a line with the function name before matches"),
852 OPT_BOOLEAN('W', "function-context", &opt
.funcbody
,
853 "show the surrounding function"),
855 OPT_CALLBACK('f', NULL
, &opt
, "file",
856 "read patterns from file", file_callback
),
857 { OPTION_CALLBACK
, 'e', NULL
, &opt
, "pattern",
858 "match <pattern>", PARSE_OPT_NONEG
, pattern_callback
},
859 { OPTION_CALLBACK
, 0, "and", &opt
, NULL
,
860 "combine patterns specified with -e",
861 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, and_callback
},
862 OPT_BOOLEAN(0, "or", &dummy
, ""),
863 { OPTION_CALLBACK
, 0, "not", &opt
, NULL
, "",
864 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, not_callback
},
865 { OPTION_CALLBACK
, '(', NULL
, &opt
, NULL
, "",
866 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
868 { OPTION_CALLBACK
, ')', NULL
, &opt
, NULL
, "",
869 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
871 OPT__QUIET(&opt
.status_only
,
872 "indicate hit with exit status without output"),
873 OPT_BOOLEAN(0, "all-match", &opt
.all_match
,
874 "show only matches from files that match all patterns"),
876 { OPTION_STRING
, 'O', "open-files-in-pager", &show_in_pager
,
877 "pager", "show matching files in the pager",
878 PARSE_OPT_OPTARG
, NULL
, (intptr_t)default_pager
},
879 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored
,
880 "allow calling of grep(1) (ignored by this build)"),
881 { OPTION_CALLBACK
, 0, "help-all", &options
, NULL
, "show usage",
882 PARSE_OPT_HIDDEN
| PARSE_OPT_NOARG
, help_callback
},
887 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
888 * to show usage information and exit.
890 if (argc
== 2 && !strcmp(argv
[1], "-h"))
891 usage_with_options(grep_usage
, options
);
893 memset(&opt
, 0, sizeof(opt
));
895 opt
.prefix_length
= (prefix
&& *prefix
) ? strlen(prefix
) : 0;
898 opt
.pattern_tail
= &opt
.pattern_list
;
899 opt
.header_tail
= &opt
.header_list
;
900 opt
.regflags
= REG_NEWLINE
;
903 strcpy(opt
.color_context
, "");
904 strcpy(opt
.color_filename
, "");
905 strcpy(opt
.color_function
, "");
906 strcpy(opt
.color_lineno
, "");
907 strcpy(opt
.color_match
, GIT_COLOR_BOLD_RED
);
908 strcpy(opt
.color_selected
, "");
909 strcpy(opt
.color_sep
, GIT_COLOR_CYAN
);
911 git_config(grep_config
, &opt
);
914 * If there is no -- then the paths must exist in the working
915 * tree. If there is no explicit pattern specified with -e or
916 * -f, we take the first unrecognized non option to be the
917 * pattern, but then what follows it must be zero or more
918 * valid refs up to the -- (if exists), and then existing
919 * paths. If there is an explicit pattern, then the first
920 * unrecognized non option is the beginning of the refs list
921 * that continues up to the -- (if exists), and then paths.
923 argc
= parse_options(argc
, argv
, prefix
, options
, grep_usage
,
924 PARSE_OPT_KEEP_DASHDASH
|
925 PARSE_OPT_STOP_AT_NON_OPTION
|
926 PARSE_OPT_NO_INTERNAL_HELP
);
927 switch (pattern_type
) {
928 case pattern_type_fixed
:
932 case pattern_type_bre
:
935 opt
.regflags
&= ~REG_EXTENDED
;
937 case pattern_type_ere
:
940 opt
.regflags
|= REG_EXTENDED
;
942 case pattern_type_pcre
:
950 if (use_index
&& !startup_info
->have_repository
)
951 /* die the same way as if we did it at the beginning */
952 setup_git_directory();
955 * skip a -- separator; we know it cannot be
956 * separating revisions from pathnames if
957 * we haven't even had any patterns yet
959 if (argc
> 0 && !opt
.pattern_list
&& !strcmp(argv
[0], "--")) {
964 /* First unrecognized non-option token */
965 if (argc
> 0 && !opt
.pattern_list
) {
966 append_grep_pattern(&opt
, argv
[0], "command line", 0,
972 if (show_in_pager
== default_pager
)
973 show_in_pager
= git_pager(1);
977 opt
.null_following_name
= 1;
978 opt
.output_priv
= &path_list
;
979 opt
.output
= append_path
;
980 string_list_append(&path_list
, show_in_pager
);
984 if (!opt
.pattern_list
)
985 die(_("no pattern given."));
986 if (!opt
.fixed
&& opt
.ignore_case
)
987 opt
.regflags
|= REG_ICASE
;
990 if (online_cpus() == 1 || !grep_threads_ok(&opt
))
994 if (opt
.pre_context
|| opt
.post_context
|| opt
.file_break
||
1003 compile_grep_patterns(&opt
);
1005 /* Check revs and then paths */
1006 for (i
= 0; i
< argc
; i
++) {
1007 const char *arg
= argv
[i
];
1008 unsigned char sha1
[20];
1010 if (!get_sha1(arg
, sha1
)) {
1011 struct object
*object
= parse_object(sha1
);
1013 die(_("bad object %s"), arg
);
1014 add_object_array(object
, arg
, &list
);
1017 if (!strcmp(arg
, "--")) {
1024 /* The rest are paths */
1025 if (!seen_dashdash
) {
1027 for (j
= i
; j
< argc
; j
++)
1028 verify_filename(prefix
, argv
[j
]);
1031 paths
= get_pathspec(prefix
, argv
+ i
);
1032 init_pathspec(&pathspec
, paths
);
1033 pathspec
.max_depth
= opt
.max_depth
;
1034 pathspec
.recursive
= 1;
1036 if (show_in_pager
&& (cached
|| list
.nr
))
1037 die(_("--open-files-in-pager only works on the worktree"));
1039 if (show_in_pager
&& opt
.pattern_list
&& !opt
.pattern_list
->next
) {
1040 const char *pager
= path_list
.items
[0].string
;
1041 int len
= strlen(pager
);
1043 if (len
> 4 && is_dir_sep(pager
[len
- 5]))
1046 if (!strcmp("less", pager
) || !strcmp("vi", pager
)) {
1047 struct strbuf buf
= STRBUF_INIT
;
1048 strbuf_addf(&buf
, "+/%s%s",
1049 strcmp("less", pager
) ? "" : "*",
1050 opt
.pattern_list
->pattern
);
1051 string_list_append(&path_list
, buf
.buf
);
1052 strbuf_detach(&buf
, NULL
);
1059 if (!use_index
&& (untracked
|| cached
))
1060 die(_("--cached or --untracked cannot be used with --no-index."));
1062 if (!use_index
|| untracked
) {
1063 int use_exclude
= (opt_exclude
< 0) ? use_index
: !!opt_exclude
;
1065 die(_("--no-index or --untracked cannot be used with revs."));
1066 hit
= grep_directory(&opt
, &pathspec
, use_exclude
);
1067 } else if (0 <= opt_exclude
) {
1068 die(_("--[no-]exclude-standard cannot be used for tracked contents."));
1069 } else if (!list
.nr
) {
1073 hit
= grep_cache(&opt
, &pathspec
, cached
);
1076 die(_("both --cached and trees are given."));
1077 hit
= grep_objects(&opt
, &pathspec
, &list
);
1082 if (hit
&& show_in_pager
)
1083 run_pager(&opt
, prefix
);
1084 free_grep_patterns(&opt
);