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 static inline void grep_lock(void)
80 pthread_mutex_lock(&grep_mutex
);
83 static inline void grep_unlock(void)
86 pthread_mutex_unlock(&grep_mutex
);
89 /* Used to serialize calls to read_sha1_file. */
90 static pthread_mutex_t read_sha1_mutex
;
92 static inline void read_sha1_lock(void)
95 pthread_mutex_lock(&read_sha1_mutex
);
98 static inline void read_sha1_unlock(void)
101 pthread_mutex_unlock(&read_sha1_mutex
);
104 /* Signalled when a new work_item is added to todo. */
105 static pthread_cond_t cond_add
;
107 /* Signalled when the result from one work_item is written to
110 static pthread_cond_t cond_write
;
112 /* Signalled when we are finished with everything. */
113 static pthread_cond_t cond_result
;
115 static int skip_first_line
;
117 static void add_work(enum work_type type
, char *name
, void *id
)
121 while ((todo_end
+1) % ARRAY_SIZE(todo
) == todo_done
) {
122 pthread_cond_wait(&cond_write
, &grep_mutex
);
125 todo
[todo_end
].type
= type
;
126 todo
[todo_end
].name
= name
;
127 todo
[todo_end
].identifier
= id
;
128 todo
[todo_end
].done
= 0;
129 strbuf_reset(&todo
[todo_end
].out
);
130 todo_end
= (todo_end
+ 1) % ARRAY_SIZE(todo
);
132 pthread_cond_signal(&cond_add
);
136 static struct work_item
*get_work(void)
138 struct work_item
*ret
;
141 while (todo_start
== todo_end
&& !all_work_added
) {
142 pthread_cond_wait(&cond_add
, &grep_mutex
);
145 if (todo_start
== todo_end
&& all_work_added
) {
148 ret
= &todo
[todo_start
];
149 todo_start
= (todo_start
+ 1) % ARRAY_SIZE(todo
);
155 static void grep_sha1_async(struct grep_opt
*opt
, char *name
,
156 const unsigned char *sha1
)
161 add_work(WORK_SHA1
, name
, s
);
164 static void grep_file_async(struct grep_opt
*opt
, char *name
,
165 const char *filename
)
167 add_work(WORK_FILE
, name
, xstrdup(filename
));
170 static void work_done(struct work_item
*w
)
176 old_done
= todo_done
;
177 for(; todo
[todo_done
].done
&& todo_done
!= todo_start
;
178 todo_done
= (todo_done
+1) % ARRAY_SIZE(todo
)) {
179 w
= &todo
[todo_done
];
181 const char *p
= w
->out
.buf
;
182 size_t len
= w
->out
.len
;
184 /* Skip the leading hunk mark of the first file. */
185 if (skip_first_line
) {
194 write_or_die(1, p
, len
);
200 if (old_done
!= todo_done
)
201 pthread_cond_signal(&cond_write
);
203 if (all_work_added
&& todo_done
== todo_end
)
204 pthread_cond_signal(&cond_result
);
209 static void *run(void *arg
)
212 struct grep_opt
*opt
= arg
;
215 struct work_item
*w
= get_work();
219 opt
->output_priv
= w
;
220 if (w
->type
== WORK_SHA1
) {
222 void* data
= load_sha1(w
->identifier
, &sz
, w
->name
);
225 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
228 } else if (w
->type
== WORK_FILE
) {
230 void* data
= load_file(w
->identifier
, &sz
);
232 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
241 free_grep_patterns(arg
);
244 return (void*) (intptr_t) hit
;
247 static void strbuf_out(struct grep_opt
*opt
, const void *buf
, size_t size
)
249 struct work_item
*w
= opt
->output_priv
;
250 strbuf_add(&w
->out
, buf
, size
);
253 static void start_threads(struct grep_opt
*opt
)
257 pthread_mutex_init(&grep_mutex
, NULL
);
258 pthread_mutex_init(&read_sha1_mutex
, NULL
);
259 pthread_cond_init(&cond_add
, NULL
);
260 pthread_cond_init(&cond_write
, NULL
);
261 pthread_cond_init(&cond_result
, NULL
);
263 for (i
= 0; i
< ARRAY_SIZE(todo
); i
++) {
264 strbuf_init(&todo
[i
].out
, 0);
267 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
269 struct grep_opt
*o
= grep_opt_dup(opt
);
270 o
->output
= strbuf_out
;
271 compile_grep_patterns(o
);
272 err
= pthread_create(&threads
[i
], NULL
, run
, o
);
275 die(_("grep: failed to create thread: %s"),
280 static int wait_all(void)
288 /* Wait until all work is done. */
289 while (todo_done
!= todo_end
)
290 pthread_cond_wait(&cond_result
, &grep_mutex
);
292 /* Wake up all the consumer threads so they can see that there
293 * is no more work to do.
295 pthread_cond_broadcast(&cond_add
);
298 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
300 pthread_join(threads
[i
], &h
);
301 hit
|= (int) (intptr_t) h
;
304 pthread_mutex_destroy(&grep_mutex
);
305 pthread_mutex_destroy(&read_sha1_mutex
);
306 pthread_cond_destroy(&cond_add
);
307 pthread_cond_destroy(&cond_write
);
308 pthread_cond_destroy(&cond_result
);
312 #else /* !NO_PTHREADS */
313 #define read_sha1_lock()
314 #define read_sha1_unlock()
316 static int wait_all(void)
322 static int grep_config(const char *var
, const char *value
, void *cb
)
324 struct grep_opt
*opt
= cb
;
327 switch (userdiff_config(var
, value
)) {
333 if (!strcmp(var
, "grep.extendedregexp")) {
334 if (git_config_bool(var
, value
))
335 opt
->regflags
|= REG_EXTENDED
;
337 opt
->regflags
&= ~REG_EXTENDED
;
341 if (!strcmp(var
, "grep.linenumber")) {
342 opt
->linenum
= git_config_bool(var
, value
);
346 if (!strcmp(var
, "color.grep"))
347 opt
->color
= git_config_colorbool(var
, value
);
348 else if (!strcmp(var
, "color.grep.context"))
349 color
= opt
->color_context
;
350 else if (!strcmp(var
, "color.grep.filename"))
351 color
= opt
->color_filename
;
352 else if (!strcmp(var
, "color.grep.function"))
353 color
= opt
->color_function
;
354 else if (!strcmp(var
, "color.grep.linenumber"))
355 color
= opt
->color_lineno
;
356 else if (!strcmp(var
, "color.grep.match"))
357 color
= opt
->color_match
;
358 else if (!strcmp(var
, "color.grep.selected"))
359 color
= opt
->color_selected
;
360 else if (!strcmp(var
, "color.grep.separator"))
361 color
= opt
->color_sep
;
363 return git_color_default_config(var
, value
, cb
);
366 return config_error_nonbool(var
);
367 color_parse(value
, var
, color
);
372 static void *lock_and_read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
378 data
= read_sha1_file(sha1
, type
, size
);
381 data
= read_sha1_file(sha1
, type
, size
);
386 static void *load_sha1(const unsigned char *sha1
, unsigned long *size
,
389 enum object_type type
;
390 void *data
= lock_and_read_sha1_file(sha1
, &type
, size
);
393 error(_("'%s': unable to read %s"), name
, sha1_to_hex(sha1
));
398 static int grep_sha1(struct grep_opt
*opt
, const unsigned char *sha1
,
399 const char *filename
, int tree_name_len
)
401 struct strbuf pathbuf
= STRBUF_INIT
;
404 if (opt
->relative
&& opt
->prefix_length
) {
405 quote_path_relative(filename
+ tree_name_len
, -1, &pathbuf
,
407 strbuf_insert(&pathbuf
, 0, filename
, tree_name_len
);
409 strbuf_addstr(&pathbuf
, filename
);
412 name
= strbuf_detach(&pathbuf
, NULL
);
416 grep_sha1_async(opt
, name
, sha1
);
423 void *data
= load_sha1(sha1
, &sz
, name
);
427 hit
= grep_buffer(opt
, name
, data
, sz
);
435 static void *load_file(const char *filename
, size_t *sz
)
441 if (lstat(filename
, &st
) < 0) {
444 error(_("'%s': %s"), filename
, strerror(errno
));
447 if (!S_ISREG(st
.st_mode
))
449 *sz
= xsize_t(st
.st_size
);
450 i
= open(filename
, O_RDONLY
);
453 data
= xmalloc(*sz
+ 1);
454 if (st
.st_size
!= read_in_full(i
, data
, *sz
)) {
455 error(_("'%s': short read %s"), filename
, strerror(errno
));
465 static int grep_file(struct grep_opt
*opt
, const char *filename
)
467 struct strbuf buf
= STRBUF_INIT
;
470 if (opt
->relative
&& opt
->prefix_length
)
471 quote_path_relative(filename
, -1, &buf
, opt
->prefix
);
473 strbuf_addstr(&buf
, filename
);
474 name
= strbuf_detach(&buf
, NULL
);
478 grep_file_async(opt
, name
, filename
);
485 void *data
= load_file(filename
, &sz
);
489 hit
= grep_buffer(opt
, name
, data
, sz
);
497 static void append_path(struct grep_opt
*opt
, const void *data
, size_t len
)
499 struct string_list
*path_list
= opt
->output_priv
;
501 if (len
== 1 && *(const char *)data
== '\0')
503 string_list_append(path_list
, xstrndup(data
, len
));
506 static void run_pager(struct grep_opt
*opt
, const char *prefix
)
508 struct string_list
*path_list
= opt
->output_priv
;
509 const char **argv
= xmalloc(sizeof(const char *) * (path_list
->nr
+ 1));
512 for (i
= 0; i
< path_list
->nr
; i
++)
513 argv
[i
] = path_list
->items
[i
].string
;
514 argv
[path_list
->nr
] = NULL
;
516 if (prefix
&& chdir(prefix
))
517 die(_("Failed to chdir: %s"), prefix
);
518 status
= run_command_v_opt(argv
, RUN_USING_SHELL
);
524 static int grep_cache(struct grep_opt
*opt
, const struct pathspec
*pathspec
, int cached
)
530 for (nr
= 0; nr
< active_nr
; nr
++) {
531 struct cache_entry
*ce
= active_cache
[nr
];
532 if (!S_ISREG(ce
->ce_mode
))
534 if (!match_pathspec_depth(pathspec
, ce
->name
, ce_namelen(ce
), 0, NULL
))
537 * If CE_VALID is on, we assume worktree file and its cache entry
538 * are identical, even if worktree file has been modified, so use
539 * cache version instead
541 if (cached
|| (ce
->ce_flags
& CE_VALID
) || ce_skip_worktree(ce
)) {
544 hit
|= grep_sha1(opt
, ce
->sha1
, ce
->name
, 0);
547 hit
|= grep_file(opt
, ce
->name
);
551 } while (nr
< active_nr
&&
552 !strcmp(ce
->name
, active_cache
[nr
]->name
));
553 nr
--; /* compensate for loop control */
555 if (hit
&& opt
->status_only
)
561 static int grep_tree(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
562 struct tree_desc
*tree
, struct strbuf
*base
, int tn_len
)
564 int hit
= 0, match
= 0;
565 struct name_entry entry
;
566 int old_baselen
= base
->len
;
568 while (tree_entry(tree
, &entry
)) {
569 int te_len
= tree_entry_len(entry
.path
, entry
.sha1
);
572 match
= tree_entry_interesting(&entry
, base
, tn_len
, pathspec
);
579 strbuf_add(base
, entry
.path
, te_len
);
581 if (S_ISREG(entry
.mode
)) {
582 hit
|= grep_sha1(opt
, entry
.sha1
, base
->buf
, tn_len
);
584 else if (S_ISDIR(entry
.mode
)) {
585 enum object_type type
;
586 struct tree_desc sub
;
590 data
= lock_and_read_sha1_file(entry
.sha1
, &type
, &size
);
592 die(_("unable to read tree (%s)"),
593 sha1_to_hex(entry
.sha1
));
595 strbuf_addch(base
, '/');
596 init_tree_desc(&sub
, data
, size
);
597 hit
|= grep_tree(opt
, pathspec
, &sub
, base
, tn_len
);
600 strbuf_setlen(base
, old_baselen
);
602 if (hit
&& opt
->status_only
)
608 static int grep_object(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
609 struct object
*obj
, const char *name
)
611 if (obj
->type
== OBJ_BLOB
)
612 return grep_sha1(opt
, obj
->sha1
, name
, 0);
613 if (obj
->type
== OBJ_COMMIT
|| obj
->type
== OBJ_TREE
) {
614 struct tree_desc tree
;
621 data
= read_object_with_reference(obj
->sha1
, tree_type
,
626 die(_("unable to read tree (%s)"), sha1_to_hex(obj
->sha1
));
628 len
= name
? strlen(name
) : 0;
629 strbuf_init(&base
, PATH_MAX
+ len
+ 1);
631 strbuf_add(&base
, name
, len
);
632 strbuf_addch(&base
, ':');
634 init_tree_desc(&tree
, data
, size
);
635 hit
= grep_tree(opt
, pathspec
, &tree
, &base
, base
.len
);
636 strbuf_release(&base
);
640 die(_("unable to grep from object of type %s"), typename(obj
->type
));
643 static int grep_objects(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
644 const struct object_array
*list
)
648 const unsigned int nr
= list
->nr
;
650 for (i
= 0; i
< nr
; i
++) {
651 struct object
*real_obj
;
652 real_obj
= deref_tag(list
->objects
[i
].item
, NULL
, 0);
653 if (grep_object(opt
, pathspec
, real_obj
, list
->objects
[i
].name
)) {
655 if (opt
->status_only
)
662 static int grep_directory(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
665 struct dir_struct dir
;
668 memset(&dir
, 0, sizeof(dir
));
670 setup_standard_excludes(&dir
);
672 fill_directory(&dir
, pathspec
->raw
);
673 for (i
= 0; i
< dir
.nr
; i
++) {
674 const char *name
= dir
.entries
[i
]->name
;
675 int namelen
= strlen(name
);
676 if (!match_pathspec_depth(pathspec
, name
, namelen
, 0, NULL
))
678 hit
|= grep_file(opt
, dir
.entries
[i
]->name
);
679 if (hit
&& opt
->status_only
)
685 static int context_callback(const struct option
*opt
, const char *arg
,
688 struct grep_opt
*grep_opt
= opt
->value
;
693 grep_opt
->pre_context
= grep_opt
->post_context
= 0;
696 value
= strtol(arg
, (char **)&endp
, 10);
698 return error(_("switch `%c' expects a numerical value"),
701 grep_opt
->pre_context
= grep_opt
->post_context
= value
;
705 static int file_callback(const struct option
*opt
, const char *arg
, int unset
)
707 struct grep_opt
*grep_opt
= opt
->value
;
708 int from_stdin
= !strcmp(arg
, "-");
711 struct strbuf sb
= STRBUF_INIT
;
713 patterns
= from_stdin
? stdin
: fopen(arg
, "r");
715 die_errno(_("cannot open '%s'"), arg
);
716 while (strbuf_getline(&sb
, patterns
, '\n') == 0) {
720 /* ignore empty line like grep does */
724 s
= strbuf_detach(&sb
, &len
);
725 append_grep_pat(grep_opt
, s
, len
, arg
, ++lno
, GREP_PATTERN
);
733 static int not_callback(const struct option
*opt
, const char *arg
, int unset
)
735 struct grep_opt
*grep_opt
= opt
->value
;
736 append_grep_pattern(grep_opt
, "--not", "command line", 0, GREP_NOT
);
740 static int and_callback(const struct option
*opt
, const char *arg
, int unset
)
742 struct grep_opt
*grep_opt
= opt
->value
;
743 append_grep_pattern(grep_opt
, "--and", "command line", 0, GREP_AND
);
747 static int open_callback(const struct option
*opt
, const char *arg
, int unset
)
749 struct grep_opt
*grep_opt
= opt
->value
;
750 append_grep_pattern(grep_opt
, "(", "command line", 0, GREP_OPEN_PAREN
);
754 static int close_callback(const struct option
*opt
, const char *arg
, int unset
)
756 struct grep_opt
*grep_opt
= opt
->value
;
757 append_grep_pattern(grep_opt
, ")", "command line", 0, GREP_CLOSE_PAREN
);
761 static int pattern_callback(const struct option
*opt
, const char *arg
,
764 struct grep_opt
*grep_opt
= opt
->value
;
765 append_grep_pattern(grep_opt
, arg
, "-e option", 0, GREP_PATTERN
);
769 static int help_callback(const struct option
*opt
, const char *arg
, int unset
)
774 int cmd_grep(int argc
, const char **argv
, const char *prefix
)
777 int cached
= 0, untracked
= 0, opt_exclude
= -1;
778 int seen_dashdash
= 0;
779 int external_grep_allowed__ignored
;
780 const char *show_in_pager
= NULL
, *default_pager
= "dummy";
782 struct object_array list
= OBJECT_ARRAY_INIT
;
783 const char **paths
= NULL
;
784 struct pathspec pathspec
;
785 struct string_list path_list
= STRING_LIST_INIT_NODUP
;
790 pattern_type_unspecified
= 0,
796 int pattern_type
= pattern_type_unspecified
;
798 struct option options
[] = {
799 OPT_BOOLEAN(0, "cached", &cached
,
800 "search in index instead of in the work tree"),
801 { OPTION_BOOLEAN
, 0, "index", &use_index
, NULL
,
802 "finds in contents not managed by git",
803 PARSE_OPT_NOARG
| PARSE_OPT_NEGHELP
},
804 OPT_BOOLEAN(0, "untracked", &untracked
,
805 "search in both tracked and untracked files"),
806 OPT_SET_INT(0, "exclude-standard", &opt_exclude
,
807 "search also in ignored files", 1),
809 OPT_BOOLEAN('v', "invert-match", &opt
.invert
,
810 "show non-matching lines"),
811 OPT_BOOLEAN('i', "ignore-case", &opt
.ignore_case
,
812 "case insensitive matching"),
813 OPT_BOOLEAN('w', "word-regexp", &opt
.word_regexp
,
814 "match patterns only at word boundaries"),
815 OPT_SET_INT('a', "text", &opt
.binary
,
816 "process binary files as text", GREP_BINARY_TEXT
),
817 OPT_SET_INT('I', NULL
, &opt
.binary
,
818 "don't match patterns in binary files",
819 GREP_BINARY_NOMATCH
),
820 { OPTION_INTEGER
, 0, "max-depth", &opt
.max_depth
, "depth",
821 "descend at most <depth> levels", PARSE_OPT_NONEG
,
824 OPT_SET_INT('E', "extended-regexp", &pattern_type
,
825 "use extended POSIX regular expressions",
827 OPT_SET_INT('G', "basic-regexp", &pattern_type
,
828 "use basic POSIX regular expressions (default)",
830 OPT_SET_INT('F', "fixed-strings", &pattern_type
,
831 "interpret patterns as fixed strings",
833 OPT_SET_INT('P', "perl-regexp", &pattern_type
,
834 "use Perl-compatible regular expressions",
837 OPT_BOOLEAN('n', "line-number", &opt
.linenum
, "show line numbers"),
838 OPT_NEGBIT('h', NULL
, &opt
.pathname
, "don't show filenames", 1),
839 OPT_BIT('H', NULL
, &opt
.pathname
, "show filenames", 1),
840 OPT_NEGBIT(0, "full-name", &opt
.relative
,
841 "show filenames relative to top directory", 1),
842 OPT_BOOLEAN('l', "files-with-matches", &opt
.name_only
,
843 "show only filenames instead of matching lines"),
844 OPT_BOOLEAN(0, "name-only", &opt
.name_only
,
845 "synonym for --files-with-matches"),
846 OPT_BOOLEAN('L', "files-without-match",
847 &opt
.unmatch_name_only
,
848 "show only the names of files without match"),
849 OPT_BOOLEAN('z', "null", &opt
.null_following_name
,
850 "print NUL after filenames"),
851 OPT_BOOLEAN('c', "count", &opt
.count
,
852 "show the number of matches instead of matching lines"),
853 OPT__COLOR(&opt
.color
, "highlight matches"),
854 OPT_BOOLEAN(0, "break", &opt
.file_break
,
855 "print empty line between matches from different files"),
856 OPT_BOOLEAN(0, "heading", &opt
.heading
,
857 "show filename only once above matches from same file"),
859 OPT_CALLBACK('C', "context", &opt
, "n",
860 "show <n> context lines before and after matches",
862 OPT_INTEGER('B', "before-context", &opt
.pre_context
,
863 "show <n> context lines before matches"),
864 OPT_INTEGER('A', "after-context", &opt
.post_context
,
865 "show <n> context lines after matches"),
866 OPT_NUMBER_CALLBACK(&opt
, "shortcut for -C NUM",
868 OPT_BOOLEAN('p', "show-function", &opt
.funcname
,
869 "show a line with the function name before matches"),
870 OPT_BOOLEAN('W', "function-context", &opt
.funcbody
,
871 "show the surrounding function"),
873 OPT_CALLBACK('f', NULL
, &opt
, "file",
874 "read patterns from file", file_callback
),
875 { OPTION_CALLBACK
, 'e', NULL
, &opt
, "pattern",
876 "match <pattern>", PARSE_OPT_NONEG
, pattern_callback
},
877 { OPTION_CALLBACK
, 0, "and", &opt
, NULL
,
878 "combine patterns specified with -e",
879 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, and_callback
},
880 OPT_BOOLEAN(0, "or", &dummy
, ""),
881 { OPTION_CALLBACK
, 0, "not", &opt
, NULL
, "",
882 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, not_callback
},
883 { OPTION_CALLBACK
, '(', NULL
, &opt
, NULL
, "",
884 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
886 { OPTION_CALLBACK
, ')', NULL
, &opt
, NULL
, "",
887 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
889 OPT__QUIET(&opt
.status_only
,
890 "indicate hit with exit status without output"),
891 OPT_BOOLEAN(0, "all-match", &opt
.all_match
,
892 "show only matches from files that match all patterns"),
894 { OPTION_STRING
, 'O', "open-files-in-pager", &show_in_pager
,
895 "pager", "show matching files in the pager",
896 PARSE_OPT_OPTARG
, NULL
, (intptr_t)default_pager
},
897 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored
,
898 "allow calling of grep(1) (ignored by this build)"),
899 { OPTION_CALLBACK
, 0, "help-all", &options
, NULL
, "show usage",
900 PARSE_OPT_HIDDEN
| PARSE_OPT_NOARG
, help_callback
},
905 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
906 * to show usage information and exit.
908 if (argc
== 2 && !strcmp(argv
[1], "-h"))
909 usage_with_options(grep_usage
, options
);
911 memset(&opt
, 0, sizeof(opt
));
913 opt
.prefix_length
= (prefix
&& *prefix
) ? strlen(prefix
) : 0;
916 opt
.pattern_tail
= &opt
.pattern_list
;
917 opt
.header_tail
= &opt
.header_list
;
918 opt
.regflags
= REG_NEWLINE
;
921 strcpy(opt
.color_context
, "");
922 strcpy(opt
.color_filename
, "");
923 strcpy(opt
.color_function
, "");
924 strcpy(opt
.color_lineno
, "");
925 strcpy(opt
.color_match
, GIT_COLOR_BOLD_RED
);
926 strcpy(opt
.color_selected
, "");
927 strcpy(opt
.color_sep
, GIT_COLOR_CYAN
);
929 git_config(grep_config
, &opt
);
932 * If there is no -- then the paths must exist in the working
933 * tree. If there is no explicit pattern specified with -e or
934 * -f, we take the first unrecognized non option to be the
935 * pattern, but then what follows it must be zero or more
936 * valid refs up to the -- (if exists), and then existing
937 * paths. If there is an explicit pattern, then the first
938 * unrecognized non option is the beginning of the refs list
939 * that continues up to the -- (if exists), and then paths.
941 argc
= parse_options(argc
, argv
, prefix
, options
, grep_usage
,
942 PARSE_OPT_KEEP_DASHDASH
|
943 PARSE_OPT_STOP_AT_NON_OPTION
|
944 PARSE_OPT_NO_INTERNAL_HELP
);
945 switch (pattern_type
) {
946 case pattern_type_fixed
:
950 case pattern_type_bre
:
953 opt
.regflags
&= ~REG_EXTENDED
;
955 case pattern_type_ere
:
958 opt
.regflags
|= REG_EXTENDED
;
960 case pattern_type_pcre
:
968 if (use_index
&& !startup_info
->have_repository
)
969 /* die the same way as if we did it at the beginning */
970 setup_git_directory();
973 * skip a -- separator; we know it cannot be
974 * separating revisions from pathnames if
975 * we haven't even had any patterns yet
977 if (argc
> 0 && !opt
.pattern_list
&& !strcmp(argv
[0], "--")) {
982 /* First unrecognized non-option token */
983 if (argc
> 0 && !opt
.pattern_list
) {
984 append_grep_pattern(&opt
, argv
[0], "command line", 0,
990 if (show_in_pager
== default_pager
)
991 show_in_pager
= git_pager(1);
995 opt
.null_following_name
= 1;
996 opt
.output_priv
= &path_list
;
997 opt
.output
= append_path
;
998 string_list_append(&path_list
, show_in_pager
);
1002 if (!opt
.pattern_list
)
1003 die(_("no pattern given."));
1004 if (!opt
.fixed
&& opt
.ignore_case
)
1005 opt
.regflags
|= REG_ICASE
;
1008 if (online_cpus() == 1 || !grep_threads_ok(&opt
))
1012 if (opt
.pre_context
|| opt
.post_context
|| opt
.file_break
||
1014 skip_first_line
= 1;
1015 start_threads(&opt
);
1021 compile_grep_patterns(&opt
);
1023 /* Check revs and then paths */
1024 for (i
= 0; i
< argc
; i
++) {
1025 const char *arg
= argv
[i
];
1026 unsigned char sha1
[20];
1028 if (!get_sha1(arg
, sha1
)) {
1029 struct object
*object
= parse_object(sha1
);
1031 die(_("bad object %s"), arg
);
1032 add_object_array(object
, arg
, &list
);
1035 if (!strcmp(arg
, "--")) {
1042 /* The rest are paths */
1043 if (!seen_dashdash
) {
1045 for (j
= i
; j
< argc
; j
++)
1046 verify_filename(prefix
, argv
[j
]);
1049 paths
= get_pathspec(prefix
, argv
+ i
);
1050 init_pathspec(&pathspec
, paths
);
1051 pathspec
.max_depth
= opt
.max_depth
;
1052 pathspec
.recursive
= 1;
1054 if (show_in_pager
&& (cached
|| list
.nr
))
1055 die(_("--open-files-in-pager only works on the worktree"));
1057 if (show_in_pager
&& opt
.pattern_list
&& !opt
.pattern_list
->next
) {
1058 const char *pager
= path_list
.items
[0].string
;
1059 int len
= strlen(pager
);
1061 if (len
> 4 && is_dir_sep(pager
[len
- 5]))
1064 if (!strcmp("less", pager
) || !strcmp("vi", pager
)) {
1065 struct strbuf buf
= STRBUF_INIT
;
1066 strbuf_addf(&buf
, "+/%s%s",
1067 strcmp("less", pager
) ? "" : "*",
1068 opt
.pattern_list
->pattern
);
1069 string_list_append(&path_list
, buf
.buf
);
1070 strbuf_detach(&buf
, NULL
);
1077 if (!use_index
&& (untracked
|| cached
))
1078 die(_("--cached or --untracked cannot be used with --no-index."));
1080 if (!use_index
|| untracked
) {
1081 int use_exclude
= (opt_exclude
< 0) ? use_index
: !!opt_exclude
;
1083 die(_("--no-index or --untracked cannot be used with revs."));
1084 hit
= grep_directory(&opt
, &pathspec
, use_exclude
);
1085 } else if (0 <= opt_exclude
) {
1086 die(_("--[no-]exclude-standard cannot be used for tracked contents."));
1087 } else if (!list
.nr
) {
1091 hit
= grep_cache(&opt
, &pathspec
, cached
);
1094 die(_("both --cached and trees are given."));
1095 hit
= grep_objects(&opt
, &pathspec
, &list
);
1100 if (hit
&& show_in_pager
)
1101 run_pager(&opt
, prefix
);
1102 free_grep_patterns(&opt
);