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"
23 static char const * const grep_usage
[] = {
24 "git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]",
28 static int use_threads
= 1;
32 static pthread_t threads
[THREADS
];
34 static void *load_sha1(const unsigned char *sha1
, unsigned long *size
,
36 static void *load_file(const char *filename
, size_t *sz
);
38 enum work_type
{WORK_SHA1
, WORK_FILE
};
40 /* We use one producer thread and THREADS consumer
41 * threads. The producer adds struct work_items to 'todo' and the
42 * consumers pick work items from the same array.
48 /* if type == WORK_SHA1, then 'identifier' is a SHA1,
49 * otherwise type == WORK_FILE, and 'identifier' is a NUL
50 * terminated filename.
57 /* In the range [todo_done, todo_start) in 'todo' we have work_items
58 * that have been or are processed by a consumer thread. We haven't
59 * written the result for these to stdout yet.
61 * The work_items in [todo_start, todo_end) are waiting to be picked
62 * up by a consumer thread.
64 * The ranges are modulo TODO_SIZE.
67 static struct work_item todo
[TODO_SIZE
];
68 static int todo_start
;
72 /* Has all work items been added? */
73 static int all_work_added
;
75 /* This lock protects all the variables above. */
76 static pthread_mutex_t grep_mutex
;
78 /* Used to serialize calls to read_sha1_file. */
79 static pthread_mutex_t read_sha1_mutex
;
81 #define grep_lock() pthread_mutex_lock(&grep_mutex)
82 #define grep_unlock() pthread_mutex_unlock(&grep_mutex)
83 #define read_sha1_lock() pthread_mutex_lock(&read_sha1_mutex)
84 #define read_sha1_unlock() pthread_mutex_unlock(&read_sha1_mutex)
86 /* Signalled when a new work_item is added to todo. */
87 static pthread_cond_t cond_add
;
89 /* Signalled when the result from one work_item is written to
92 static pthread_cond_t cond_write
;
94 /* Signalled when we are finished with everything. */
95 static pthread_cond_t cond_result
;
97 static int skip_first_line
;
99 static void add_work(enum work_type type
, char *name
, void *id
)
103 while ((todo_end
+1) % ARRAY_SIZE(todo
) == todo_done
) {
104 pthread_cond_wait(&cond_write
, &grep_mutex
);
107 todo
[todo_end
].type
= type
;
108 todo
[todo_end
].name
= name
;
109 todo
[todo_end
].identifier
= id
;
110 todo
[todo_end
].done
= 0;
111 strbuf_reset(&todo
[todo_end
].out
);
112 todo_end
= (todo_end
+ 1) % ARRAY_SIZE(todo
);
114 pthread_cond_signal(&cond_add
);
118 static struct work_item
*get_work(void)
120 struct work_item
*ret
;
123 while (todo_start
== todo_end
&& !all_work_added
) {
124 pthread_cond_wait(&cond_add
, &grep_mutex
);
127 if (todo_start
== todo_end
&& all_work_added
) {
130 ret
= &todo
[todo_start
];
131 todo_start
= (todo_start
+ 1) % ARRAY_SIZE(todo
);
137 static void grep_sha1_async(struct grep_opt
*opt
, char *name
,
138 const unsigned char *sha1
)
143 add_work(WORK_SHA1
, name
, s
);
146 static void grep_file_async(struct grep_opt
*opt
, char *name
,
147 const char *filename
)
149 add_work(WORK_FILE
, name
, xstrdup(filename
));
152 static void work_done(struct work_item
*w
)
158 old_done
= todo_done
;
159 for(; todo
[todo_done
].done
&& todo_done
!= todo_start
;
160 todo_done
= (todo_done
+1) % ARRAY_SIZE(todo
)) {
161 w
= &todo
[todo_done
];
163 const char *p
= w
->out
.buf
;
164 size_t len
= w
->out
.len
;
166 /* Skip the leading hunk mark of the first file. */
167 if (skip_first_line
) {
176 write_or_die(1, p
, len
);
182 if (old_done
!= todo_done
)
183 pthread_cond_signal(&cond_write
);
185 if (all_work_added
&& todo_done
== todo_end
)
186 pthread_cond_signal(&cond_result
);
191 static int skip_binary(struct grep_opt
*opt
, const char *filename
)
193 if ((opt
->binary
& GREP_BINARY_NOMATCH
)) {
194 static struct git_attr
*attr_text
;
195 struct git_attr_check check
;
198 attr_text
= git_attr("text");
199 memset(&check
, 0, sizeof(check
));
200 check
.attr
= attr_text
;
201 return !git_checkattr(filename
, 1, &check
) &&
202 ATTR_FALSE(check
.value
);
207 static void *run(void *arg
)
210 struct grep_opt
*opt
= arg
;
213 struct work_item
*w
= get_work();
217 if (skip_binary(opt
, (const char *)w
->identifier
))
220 opt
->output_priv
= w
;
221 if (w
->type
== WORK_SHA1
) {
223 void* data
= load_sha1(w
->identifier
, &sz
, w
->name
);
226 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
229 } else if (w
->type
== WORK_FILE
) {
231 void* data
= load_file(w
->identifier
, &sz
);
233 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
242 free_grep_patterns(arg
);
245 return (void*) (intptr_t) hit
;
248 static void strbuf_out(struct grep_opt
*opt
, const void *buf
, size_t size
)
250 struct work_item
*w
= opt
->output_priv
;
251 strbuf_add(&w
->out
, buf
, size
);
254 static void start_threads(struct grep_opt
*opt
)
258 pthread_mutex_init(&grep_mutex
, NULL
);
259 pthread_mutex_init(&read_sha1_mutex
, NULL
);
260 pthread_cond_init(&cond_add
, NULL
);
261 pthread_cond_init(&cond_write
, NULL
);
262 pthread_cond_init(&cond_result
, NULL
);
264 for (i
= 0; i
< ARRAY_SIZE(todo
); i
++) {
265 strbuf_init(&todo
[i
].out
, 0);
268 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
270 struct grep_opt
*o
= grep_opt_dup(opt
);
271 o
->output
= strbuf_out
;
272 compile_grep_patterns(o
);
273 err
= pthread_create(&threads
[i
], NULL
, run
, o
);
276 die(_("grep: failed to create thread: %s"),
281 static int wait_all(void)
289 /* Wait until all work is done. */
290 while (todo_done
!= todo_end
)
291 pthread_cond_wait(&cond_result
, &grep_mutex
);
293 /* Wake up all the consumer threads so they can see that there
294 * is no more work to do.
296 pthread_cond_broadcast(&cond_add
);
299 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
301 pthread_join(threads
[i
], &h
);
302 hit
|= (int) (intptr_t) h
;
305 pthread_mutex_destroy(&grep_mutex
);
306 pthread_mutex_destroy(&read_sha1_mutex
);
307 pthread_cond_destroy(&cond_add
);
308 pthread_cond_destroy(&cond_write
);
309 pthread_cond_destroy(&cond_result
);
313 #else /* !NO_PTHREADS */
314 #define read_sha1_lock()
315 #define read_sha1_unlock()
317 static int wait_all(void)
323 static int grep_config(const char *var
, const char *value
, void *cb
)
325 struct grep_opt
*opt
= cb
;
328 switch (userdiff_config(var
, value
)) {
334 if (!strcmp(var
, "grep.extendedregexp")) {
335 if (git_config_bool(var
, value
))
336 opt
->regflags
|= REG_EXTENDED
;
338 opt
->regflags
&= ~REG_EXTENDED
;
342 if (!strcmp(var
, "grep.linenumber")) {
343 opt
->linenum
= git_config_bool(var
, value
);
347 if (!strcmp(var
, "color.grep"))
348 opt
->color
= git_config_colorbool(var
, value
);
349 else if (!strcmp(var
, "color.grep.context"))
350 color
= opt
->color_context
;
351 else if (!strcmp(var
, "color.grep.filename"))
352 color
= opt
->color_filename
;
353 else if (!strcmp(var
, "color.grep.function"))
354 color
= opt
->color_function
;
355 else if (!strcmp(var
, "color.grep.linenumber"))
356 color
= opt
->color_lineno
;
357 else if (!strcmp(var
, "color.grep.match"))
358 color
= opt
->color_match
;
359 else if (!strcmp(var
, "color.grep.selected"))
360 color
= opt
->color_selected
;
361 else if (!strcmp(var
, "color.grep.separator"))
362 color
= opt
->color_sep
;
364 return git_color_default_config(var
, value
, cb
);
367 return config_error_nonbool(var
);
368 color_parse(value
, var
, color
);
373 static void *lock_and_read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
379 data
= read_sha1_file(sha1
, type
, size
);
382 data
= read_sha1_file(sha1
, type
, size
);
387 static void *load_sha1(const unsigned char *sha1
, unsigned long *size
,
390 enum object_type type
;
391 void *data
= lock_and_read_sha1_file(sha1
, &type
, size
);
394 error(_("'%s': unable to read %s"), name
, sha1_to_hex(sha1
));
399 static int grep_sha1(struct grep_opt
*opt
, const unsigned char *sha1
,
400 const char *filename
, int tree_name_len
)
402 struct strbuf pathbuf
= STRBUF_INIT
;
405 if (opt
->relative
&& opt
->prefix_length
) {
406 quote_path_relative(filename
+ tree_name_len
, -1, &pathbuf
,
408 strbuf_insert(&pathbuf
, 0, filename
, tree_name_len
);
410 strbuf_addstr(&pathbuf
, filename
);
413 name
= strbuf_detach(&pathbuf
, NULL
);
417 grep_sha1_async(opt
, name
, sha1
);
424 void *data
= load_sha1(sha1
, &sz
, name
);
428 hit
= grep_buffer(opt
, name
, data
, sz
);
436 static void *load_file(const char *filename
, size_t *sz
)
442 if (lstat(filename
, &st
) < 0) {
445 error(_("'%s': %s"), filename
, strerror(errno
));
448 if (!S_ISREG(st
.st_mode
))
450 *sz
= xsize_t(st
.st_size
);
451 i
= open(filename
, O_RDONLY
);
454 data
= xmalloc(*sz
+ 1);
455 if (st
.st_size
!= read_in_full(i
, data
, *sz
)) {
456 error(_("'%s': short read %s"), filename
, strerror(errno
));
466 static int grep_file(struct grep_opt
*opt
, const char *filename
)
468 struct strbuf buf
= STRBUF_INIT
;
471 if (opt
->relative
&& opt
->prefix_length
)
472 quote_path_relative(filename
, -1, &buf
, opt
->prefix
);
474 strbuf_addstr(&buf
, filename
);
475 name
= strbuf_detach(&buf
, NULL
);
479 grep_file_async(opt
, name
, filename
);
486 void *data
= load_file(filename
, &sz
);
490 hit
= grep_buffer(opt
, name
, data
, sz
);
498 static void append_path(struct grep_opt
*opt
, const void *data
, size_t len
)
500 struct string_list
*path_list
= opt
->output_priv
;
502 if (len
== 1 && *(const char *)data
== '\0')
504 string_list_append(path_list
, xstrndup(data
, len
));
507 static void run_pager(struct grep_opt
*opt
, const char *prefix
)
509 struct string_list
*path_list
= opt
->output_priv
;
510 const char **argv
= xmalloc(sizeof(const char *) * (path_list
->nr
+ 1));
513 for (i
= 0; i
< path_list
->nr
; i
++)
514 argv
[i
] = path_list
->items
[i
].string
;
515 argv
[path_list
->nr
] = NULL
;
517 if (prefix
&& chdir(prefix
))
518 die(_("Failed to chdir: %s"), prefix
);
519 status
= run_command_v_opt(argv
, RUN_USING_SHELL
);
525 static int grep_cache(struct grep_opt
*opt
, const struct pathspec
*pathspec
, int cached
)
531 for (nr
= 0; nr
< active_nr
; nr
++) {
532 struct cache_entry
*ce
= active_cache
[nr
];
533 if (!S_ISREG(ce
->ce_mode
))
535 if (!match_pathspec_depth(pathspec
, ce
->name
, ce_namelen(ce
), 0, NULL
))
537 if (skip_binary(opt
, ce
->name
))
541 * If CE_VALID is on, we assume worktree file and its cache entry
542 * are identical, even if worktree file has been modified, so use
543 * cache version instead
545 if (cached
|| (ce
->ce_flags
& CE_VALID
) || ce_skip_worktree(ce
)) {
548 hit
|= grep_sha1(opt
, ce
->sha1
, ce
->name
, 0);
551 hit
|= grep_file(opt
, ce
->name
);
555 } while (nr
< active_nr
&&
556 !strcmp(ce
->name
, active_cache
[nr
]->name
));
557 nr
--; /* compensate for loop control */
559 if (hit
&& opt
->status_only
)
565 static int grep_tree(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
566 struct tree_desc
*tree
, struct strbuf
*base
, int tn_len
)
568 int hit
= 0, match
= 0;
569 struct name_entry entry
;
570 int old_baselen
= base
->len
;
572 while (tree_entry(tree
, &entry
)) {
573 int te_len
= tree_entry_len(entry
.path
, entry
.sha1
);
576 match
= tree_entry_interesting(&entry
, base
, tn_len
, pathspec
);
583 strbuf_add(base
, entry
.path
, te_len
);
585 if (S_ISREG(entry
.mode
)) {
586 hit
|= grep_sha1(opt
, entry
.sha1
, base
->buf
, tn_len
);
588 else if (S_ISDIR(entry
.mode
)) {
589 enum object_type type
;
590 struct tree_desc sub
;
594 data
= lock_and_read_sha1_file(entry
.sha1
, &type
, &size
);
596 die(_("unable to read tree (%s)"),
597 sha1_to_hex(entry
.sha1
));
599 strbuf_addch(base
, '/');
600 init_tree_desc(&sub
, data
, size
);
601 hit
|= grep_tree(opt
, pathspec
, &sub
, base
, tn_len
);
604 strbuf_setlen(base
, old_baselen
);
606 if (hit
&& opt
->status_only
)
612 static int grep_object(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
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
;
625 data
= read_object_with_reference(obj
->sha1
, tree_type
,
630 die(_("unable to read tree (%s)"), sha1_to_hex(obj
->sha1
));
632 len
= name
? strlen(name
) : 0;
633 strbuf_init(&base
, PATH_MAX
+ len
+ 1);
635 strbuf_add(&base
, name
, len
);
636 strbuf_addch(&base
, ':');
638 init_tree_desc(&tree
, data
, size
);
639 hit
= grep_tree(opt
, pathspec
, &tree
, &base
, base
.len
);
640 strbuf_release(&base
);
644 die(_("unable to grep from object of type %s"), typename(obj
->type
));
647 static int grep_objects(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
648 const struct object_array
*list
)
652 const unsigned int nr
= list
->nr
;
654 for (i
= 0; i
< nr
; i
++) {
655 struct object
*real_obj
;
656 real_obj
= deref_tag(list
->objects
[i
].item
, NULL
, 0);
657 if (grep_object(opt
, pathspec
, real_obj
, list
->objects
[i
].name
)) {
659 if (opt
->status_only
)
666 static int grep_directory(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
669 struct dir_struct dir
;
672 memset(&dir
, 0, sizeof(dir
));
674 setup_standard_excludes(&dir
);
676 fill_directory(&dir
, pathspec
->raw
);
677 for (i
= 0; i
< dir
.nr
; i
++) {
678 const char *name
= dir
.entries
[i
]->name
;
679 int namelen
= strlen(name
);
680 if (!match_pathspec_depth(pathspec
, name
, namelen
, 0, NULL
))
682 hit
|= grep_file(opt
, dir
.entries
[i
]->name
);
683 if (hit
&& opt
->status_only
)
689 static int context_callback(const struct option
*opt
, const char *arg
,
692 struct grep_opt
*grep_opt
= opt
->value
;
697 grep_opt
->pre_context
= grep_opt
->post_context
= 0;
700 value
= strtol(arg
, (char **)&endp
, 10);
702 return error(_("switch `%c' expects a numerical value"),
705 grep_opt
->pre_context
= grep_opt
->post_context
= value
;
709 static int file_callback(const struct option
*opt
, const char *arg
, int unset
)
711 struct grep_opt
*grep_opt
= opt
->value
;
712 int from_stdin
= !strcmp(arg
, "-");
715 struct strbuf sb
= STRBUF_INIT
;
717 patterns
= from_stdin
? stdin
: fopen(arg
, "r");
719 die_errno(_("cannot open '%s'"), arg
);
720 while (strbuf_getline(&sb
, patterns
, '\n') == 0) {
724 /* ignore empty line like grep does */
728 s
= strbuf_detach(&sb
, &len
);
729 append_grep_pat(grep_opt
, s
, len
, arg
, ++lno
, GREP_PATTERN
);
737 static int not_callback(const struct option
*opt
, const char *arg
, int unset
)
739 struct grep_opt
*grep_opt
= opt
->value
;
740 append_grep_pattern(grep_opt
, "--not", "command line", 0, GREP_NOT
);
744 static int and_callback(const struct option
*opt
, const char *arg
, int unset
)
746 struct grep_opt
*grep_opt
= opt
->value
;
747 append_grep_pattern(grep_opt
, "--and", "command line", 0, GREP_AND
);
751 static int open_callback(const struct option
*opt
, const char *arg
, int unset
)
753 struct grep_opt
*grep_opt
= opt
->value
;
754 append_grep_pattern(grep_opt
, "(", "command line", 0, GREP_OPEN_PAREN
);
758 static int close_callback(const struct option
*opt
, const char *arg
, int unset
)
760 struct grep_opt
*grep_opt
= opt
->value
;
761 append_grep_pattern(grep_opt
, ")", "command line", 0, GREP_CLOSE_PAREN
);
765 static int pattern_callback(const struct option
*opt
, const char *arg
,
768 struct grep_opt
*grep_opt
= opt
->value
;
769 append_grep_pattern(grep_opt
, arg
, "-e option", 0, GREP_PATTERN
);
773 static int help_callback(const struct option
*opt
, const char *arg
, int unset
)
778 int cmd_grep(int argc
, const char **argv
, const char *prefix
)
781 int cached
= 0, untracked
= 0, opt_exclude
= -1;
782 int seen_dashdash
= 0;
783 int external_grep_allowed__ignored
;
784 const char *show_in_pager
= NULL
, *default_pager
= "dummy";
786 struct object_array list
= OBJECT_ARRAY_INIT
;
787 const char **paths
= NULL
;
788 struct pathspec pathspec
;
789 struct string_list path_list
= STRING_LIST_INIT_NODUP
;
794 pattern_type_unspecified
= 0,
800 int pattern_type
= pattern_type_unspecified
;
802 struct option options
[] = {
803 OPT_BOOLEAN(0, "cached", &cached
,
804 "search in index instead of in the work tree"),
805 { OPTION_BOOLEAN
, 0, "index", &use_index
, NULL
,
806 "finds in contents not managed by git",
807 PARSE_OPT_NOARG
| PARSE_OPT_NEGHELP
},
808 OPT_BOOLEAN(0, "untracked", &untracked
,
809 "search in both tracked and untracked files"),
810 OPT_SET_INT(0, "exclude-standard", &opt_exclude
,
811 "search also in ignored files", 1),
813 OPT_BOOLEAN('v', "invert-match", &opt
.invert
,
814 "show non-matching lines"),
815 OPT_BOOLEAN('i', "ignore-case", &opt
.ignore_case
,
816 "case insensitive matching"),
817 OPT_BOOLEAN('w', "word-regexp", &opt
.word_regexp
,
818 "match patterns only at word boundaries"),
819 OPT_SET_INT('a', "text", &opt
.binary
,
820 "process binary files as text", GREP_BINARY_TEXT
),
821 OPT_SET_INT('I', NULL
, &opt
.binary
,
822 "don't match patterns in binary files",
823 GREP_BINARY_NOMATCH
),
824 { OPTION_INTEGER
, 0, "max-depth", &opt
.max_depth
, "depth",
825 "descend at most <depth> levels", PARSE_OPT_NONEG
,
828 OPT_SET_INT('E', "extended-regexp", &pattern_type
,
829 "use extended POSIX regular expressions",
831 OPT_SET_INT('G', "basic-regexp", &pattern_type
,
832 "use basic POSIX regular expressions (default)",
834 OPT_SET_INT('F', "fixed-strings", &pattern_type
,
835 "interpret patterns as fixed strings",
837 OPT_SET_INT('P', "perl-regexp", &pattern_type
,
838 "use Perl-compatible regular expressions",
841 OPT_BOOLEAN('n', "line-number", &opt
.linenum
, "show line numbers"),
842 OPT_NEGBIT('h', NULL
, &opt
.pathname
, "don't show filenames", 1),
843 OPT_BIT('H', NULL
, &opt
.pathname
, "show filenames", 1),
844 OPT_NEGBIT(0, "full-name", &opt
.relative
,
845 "show filenames relative to top directory", 1),
846 OPT_BOOLEAN('l', "files-with-matches", &opt
.name_only
,
847 "show only filenames instead of matching lines"),
848 OPT_BOOLEAN(0, "name-only", &opt
.name_only
,
849 "synonym for --files-with-matches"),
850 OPT_BOOLEAN('L', "files-without-match",
851 &opt
.unmatch_name_only
,
852 "show only the names of files without match"),
853 OPT_BOOLEAN('z', "null", &opt
.null_following_name
,
854 "print NUL after filenames"),
855 OPT_BOOLEAN('c', "count", &opt
.count
,
856 "show the number of matches instead of matching lines"),
857 OPT__COLOR(&opt
.color
, "highlight matches"),
858 OPT_BOOLEAN(0, "break", &opt
.file_break
,
859 "print empty line between matches from different files"),
860 OPT_BOOLEAN(0, "heading", &opt
.heading
,
861 "show filename only once above matches from same file"),
863 OPT_CALLBACK('C', "context", &opt
, "n",
864 "show <n> context lines before and after matches",
866 OPT_INTEGER('B', "before-context", &opt
.pre_context
,
867 "show <n> context lines before matches"),
868 OPT_INTEGER('A', "after-context", &opt
.post_context
,
869 "show <n> context lines after matches"),
870 OPT_NUMBER_CALLBACK(&opt
, "shortcut for -C NUM",
872 OPT_BOOLEAN('p', "show-function", &opt
.funcname
,
873 "show a line with the function name before matches"),
874 OPT_BOOLEAN('W', "function-context", &opt
.funcbody
,
875 "show the surrounding function"),
877 OPT_CALLBACK('f', NULL
, &opt
, "file",
878 "read patterns from file", file_callback
),
879 { OPTION_CALLBACK
, 'e', NULL
, &opt
, "pattern",
880 "match <pattern>", PARSE_OPT_NONEG
, pattern_callback
},
881 { OPTION_CALLBACK
, 0, "and", &opt
, NULL
,
882 "combine patterns specified with -e",
883 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, and_callback
},
884 OPT_BOOLEAN(0, "or", &dummy
, ""),
885 { OPTION_CALLBACK
, 0, "not", &opt
, NULL
, "",
886 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, not_callback
},
887 { OPTION_CALLBACK
, '(', NULL
, &opt
, NULL
, "",
888 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
890 { OPTION_CALLBACK
, ')', NULL
, &opt
, NULL
, "",
891 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
893 OPT__QUIET(&opt
.status_only
,
894 "indicate hit with exit status without output"),
895 OPT_BOOLEAN(0, "all-match", &opt
.all_match
,
896 "show only matches from files that match all patterns"),
898 { OPTION_STRING
, 'O', "open-files-in-pager", &show_in_pager
,
899 "pager", "show matching files in the pager",
900 PARSE_OPT_OPTARG
, NULL
, (intptr_t)default_pager
},
901 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored
,
902 "allow calling of grep(1) (ignored by this build)"),
903 { OPTION_CALLBACK
, 0, "help-all", &options
, NULL
, "show usage",
904 PARSE_OPT_HIDDEN
| PARSE_OPT_NOARG
, help_callback
},
909 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
910 * to show usage information and exit.
912 if (argc
== 2 && !strcmp(argv
[1], "-h"))
913 usage_with_options(grep_usage
, options
);
915 memset(&opt
, 0, sizeof(opt
));
917 opt
.prefix_length
= (prefix
&& *prefix
) ? strlen(prefix
) : 0;
920 opt
.pattern_tail
= &opt
.pattern_list
;
921 opt
.header_tail
= &opt
.header_list
;
922 opt
.regflags
= REG_NEWLINE
;
925 strcpy(opt
.color_context
, "");
926 strcpy(opt
.color_filename
, "");
927 strcpy(opt
.color_function
, "");
928 strcpy(opt
.color_lineno
, "");
929 strcpy(opt
.color_match
, GIT_COLOR_BOLD_RED
);
930 strcpy(opt
.color_selected
, "");
931 strcpy(opt
.color_sep
, GIT_COLOR_CYAN
);
933 git_config(grep_config
, &opt
);
936 * If there is no -- then the paths must exist in the working
937 * tree. If there is no explicit pattern specified with -e or
938 * -f, we take the first unrecognized non option to be the
939 * pattern, but then what follows it must be zero or more
940 * valid refs up to the -- (if exists), and then existing
941 * paths. If there is an explicit pattern, then the first
942 * unrecognized non option is the beginning of the refs list
943 * that continues up to the -- (if exists), and then paths.
945 argc
= parse_options(argc
, argv
, prefix
, options
, grep_usage
,
946 PARSE_OPT_KEEP_DASHDASH
|
947 PARSE_OPT_STOP_AT_NON_OPTION
|
948 PARSE_OPT_NO_INTERNAL_HELP
);
949 switch (pattern_type
) {
950 case pattern_type_fixed
:
954 case pattern_type_bre
:
957 opt
.regflags
&= ~REG_EXTENDED
;
959 case pattern_type_ere
:
962 opt
.regflags
|= REG_EXTENDED
;
964 case pattern_type_pcre
:
972 if (use_index
&& !startup_info
->have_repository
)
973 /* die the same way as if we did it at the beginning */
974 setup_git_directory();
977 * skip a -- separator; we know it cannot be
978 * separating revisions from pathnames if
979 * we haven't even had any patterns yet
981 if (argc
> 0 && !opt
.pattern_list
&& !strcmp(argv
[0], "--")) {
986 /* First unrecognized non-option token */
987 if (argc
> 0 && !opt
.pattern_list
) {
988 append_grep_pattern(&opt
, argv
[0], "command line", 0,
994 if (show_in_pager
== default_pager
)
995 show_in_pager
= git_pager(1);
999 opt
.null_following_name
= 1;
1000 opt
.output_priv
= &path_list
;
1001 opt
.output
= append_path
;
1002 string_list_append(&path_list
, show_in_pager
);
1005 if ((opt
.binary
& GREP_BINARY_NOMATCH
))
1008 if (!opt
.pattern_list
)
1009 die(_("no pattern given."));
1010 if (!opt
.fixed
&& opt
.ignore_case
)
1011 opt
.regflags
|= REG_ICASE
;
1014 if (online_cpus() == 1 || !grep_threads_ok(&opt
))
1018 if (opt
.pre_context
|| opt
.post_context
|| opt
.file_break
||
1020 skip_first_line
= 1;
1021 start_threads(&opt
);
1027 compile_grep_patterns(&opt
);
1029 /* Check revs and then paths */
1030 for (i
= 0; i
< argc
; i
++) {
1031 const char *arg
= argv
[i
];
1032 unsigned char sha1
[20];
1034 if (!get_sha1(arg
, sha1
)) {
1035 struct object
*object
= parse_object(sha1
);
1037 die(_("bad object %s"), arg
);
1038 add_object_array(object
, arg
, &list
);
1041 if (!strcmp(arg
, "--")) {
1048 /* The rest are paths */
1049 if (!seen_dashdash
) {
1051 for (j
= i
; j
< argc
; j
++)
1052 verify_filename(prefix
, argv
[j
]);
1055 paths
= get_pathspec(prefix
, argv
+ i
);
1056 init_pathspec(&pathspec
, paths
);
1057 pathspec
.max_depth
= opt
.max_depth
;
1058 pathspec
.recursive
= 1;
1060 if (show_in_pager
&& (cached
|| list
.nr
))
1061 die(_("--open-files-in-pager only works on the worktree"));
1063 if (show_in_pager
&& opt
.pattern_list
&& !opt
.pattern_list
->next
) {
1064 const char *pager
= path_list
.items
[0].string
;
1065 int len
= strlen(pager
);
1067 if (len
> 4 && is_dir_sep(pager
[len
- 5]))
1070 if (opt
.ignore_case
&& !strcmp("less", pager
))
1071 string_list_append(&path_list
, "-i");
1073 if (!strcmp("less", pager
) || !strcmp("vi", pager
)) {
1074 struct strbuf buf
= STRBUF_INIT
;
1075 strbuf_addf(&buf
, "+/%s%s",
1076 strcmp("less", pager
) ? "" : "*",
1077 opt
.pattern_list
->pattern
);
1078 string_list_append(&path_list
, buf
.buf
);
1079 strbuf_detach(&buf
, NULL
);
1086 if (!use_index
&& (untracked
|| cached
))
1087 die(_("--cached or --untracked cannot be used with --no-index."));
1089 if (!use_index
|| untracked
) {
1090 int use_exclude
= (opt_exclude
< 0) ? use_index
: !!opt_exclude
;
1092 die(_("--no-index or --untracked cannot be used with revs."));
1093 hit
= grep_directory(&opt
, &pathspec
, use_exclude
);
1094 } else if (0 <= opt_exclude
) {
1095 die(_("--exclude or --no-exclude cannot be used for tracked contents."));
1096 } else if (!list
.nr
) {
1100 hit
= grep_cache(&opt
, &pathspec
, cached
);
1103 die(_("both --cached and trees are given."));
1104 hit
= grep_objects(&opt
, &pathspec
, &list
);
1109 if (hit
&& show_in_pager
)
1110 run_pager(&opt
, prefix
);
1111 free_grep_patterns(&opt
);