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 print_hunk_marks_between_files
;
98 static int printed_something
;
100 static void add_work(enum work_type type
, char *name
, void *id
)
104 while ((todo_end
+1) % ARRAY_SIZE(todo
) == todo_done
) {
105 pthread_cond_wait(&cond_write
, &grep_mutex
);
108 todo
[todo_end
].type
= type
;
109 todo
[todo_end
].name
= name
;
110 todo
[todo_end
].identifier
= id
;
111 todo
[todo_end
].done
= 0;
112 strbuf_reset(&todo
[todo_end
].out
);
113 todo_end
= (todo_end
+ 1) % ARRAY_SIZE(todo
);
115 pthread_cond_signal(&cond_add
);
119 static struct work_item
*get_work(void)
121 struct work_item
*ret
;
124 while (todo_start
== todo_end
&& !all_work_added
) {
125 pthread_cond_wait(&cond_add
, &grep_mutex
);
128 if (todo_start
== todo_end
&& all_work_added
) {
131 ret
= &todo
[todo_start
];
132 todo_start
= (todo_start
+ 1) % ARRAY_SIZE(todo
);
138 static void grep_sha1_async(struct grep_opt
*opt
, char *name
,
139 const unsigned char *sha1
)
144 add_work(WORK_SHA1
, name
, s
);
147 static void grep_file_async(struct grep_opt
*opt
, char *name
,
148 const char *filename
)
150 add_work(WORK_FILE
, name
, xstrdup(filename
));
153 static void work_done(struct work_item
*w
)
159 old_done
= todo_done
;
160 for(; todo
[todo_done
].done
&& todo_done
!= todo_start
;
161 todo_done
= (todo_done
+1) % ARRAY_SIZE(todo
)) {
162 w
= &todo
[todo_done
];
164 if (print_hunk_marks_between_files
&& printed_something
)
165 write_or_die(1, "--\n", 3);
166 write_or_die(1, w
->out
.buf
, w
->out
.len
);
167 printed_something
= 1;
173 if (old_done
!= todo_done
)
174 pthread_cond_signal(&cond_write
);
176 if (all_work_added
&& todo_done
== todo_end
)
177 pthread_cond_signal(&cond_result
);
182 static int skip_binary(struct grep_opt
*opt
, const char *filename
)
184 if ((opt
->binary
& GREP_BINARY_NOMATCH
)) {
185 static struct git_attr
*attr_text
;
186 struct git_attr_check check
;
189 attr_text
= git_attr("text");
190 memset(&check
, 0, sizeof(check
));
191 check
.attr
= attr_text
;
192 return !git_checkattr(filename
, 1, &check
) &&
193 ATTR_FALSE(check
.value
);
198 static void *run(void *arg
)
201 struct grep_opt
*opt
= arg
;
204 struct work_item
*w
= get_work();
208 if (skip_binary(opt
, (const char *)w
->identifier
))
211 opt
->output_priv
= w
;
212 if (w
->type
== WORK_SHA1
) {
214 void* data
= load_sha1(w
->identifier
, &sz
, w
->name
);
217 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
220 } else if (w
->type
== WORK_FILE
) {
222 void* data
= load_file(w
->identifier
, &sz
);
224 hit
|= grep_buffer(opt
, w
->name
, data
, sz
);
233 free_grep_patterns(arg
);
236 return (void*) (intptr_t) hit
;
239 static void strbuf_out(struct grep_opt
*opt
, const void *buf
, size_t size
)
241 struct work_item
*w
= opt
->output_priv
;
242 strbuf_add(&w
->out
, buf
, size
);
245 static void start_threads(struct grep_opt
*opt
)
249 pthread_mutex_init(&grep_mutex
, NULL
);
250 pthread_mutex_init(&read_sha1_mutex
, NULL
);
251 pthread_cond_init(&cond_add
, NULL
);
252 pthread_cond_init(&cond_write
, NULL
);
253 pthread_cond_init(&cond_result
, NULL
);
255 for (i
= 0; i
< ARRAY_SIZE(todo
); i
++) {
256 strbuf_init(&todo
[i
].out
, 0);
259 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
261 struct grep_opt
*o
= grep_opt_dup(opt
);
262 o
->output
= strbuf_out
;
263 compile_grep_patterns(o
);
264 err
= pthread_create(&threads
[i
], NULL
, run
, o
);
267 die(_("grep: failed to create thread: %s"),
272 static int wait_all(void)
280 /* Wait until all work is done. */
281 while (todo_done
!= todo_end
)
282 pthread_cond_wait(&cond_result
, &grep_mutex
);
284 /* Wake up all the consumer threads so they can see that there
285 * is no more work to do.
287 pthread_cond_broadcast(&cond_add
);
290 for (i
= 0; i
< ARRAY_SIZE(threads
); i
++) {
292 pthread_join(threads
[i
], &h
);
293 hit
|= (int) (intptr_t) h
;
296 pthread_mutex_destroy(&grep_mutex
);
297 pthread_mutex_destroy(&read_sha1_mutex
);
298 pthread_cond_destroy(&cond_add
);
299 pthread_cond_destroy(&cond_write
);
300 pthread_cond_destroy(&cond_result
);
304 #else /* !NO_PTHREADS */
305 #define read_sha1_lock()
306 #define read_sha1_unlock()
308 static int wait_all(void)
314 static int grep_config(const char *var
, const char *value
, void *cb
)
316 struct grep_opt
*opt
= cb
;
319 switch (userdiff_config(var
, value
)) {
325 if (!strcmp(var
, "grep.extendedregexp")) {
326 if (git_config_bool(var
, value
))
327 opt
->regflags
|= REG_EXTENDED
;
329 opt
->regflags
&= ~REG_EXTENDED
;
333 if (!strcmp(var
, "grep.linenumber")) {
334 opt
->linenum
= git_config_bool(var
, value
);
338 if (!strcmp(var
, "color.grep"))
339 opt
->color
= git_config_colorbool(var
, value
, -1);
340 else if (!strcmp(var
, "color.grep.context"))
341 color
= opt
->color_context
;
342 else if (!strcmp(var
, "color.grep.filename"))
343 color
= opt
->color_filename
;
344 else if (!strcmp(var
, "color.grep.function"))
345 color
= opt
->color_function
;
346 else if (!strcmp(var
, "color.grep.linenumber"))
347 color
= opt
->color_lineno
;
348 else if (!strcmp(var
, "color.grep.match"))
349 color
= opt
->color_match
;
350 else if (!strcmp(var
, "color.grep.selected"))
351 color
= opt
->color_selected
;
352 else if (!strcmp(var
, "color.grep.separator"))
353 color
= opt
->color_sep
;
355 return git_color_default_config(var
, value
, cb
);
358 return config_error_nonbool(var
);
359 color_parse(value
, var
, color
);
364 static void *lock_and_read_sha1_file(const unsigned char *sha1
, enum object_type
*type
, unsigned long *size
)
370 data
= read_sha1_file(sha1
, type
, size
);
373 data
= read_sha1_file(sha1
, type
, size
);
378 static void *load_sha1(const unsigned char *sha1
, unsigned long *size
,
381 enum object_type type
;
382 void *data
= lock_and_read_sha1_file(sha1
, &type
, size
);
385 error(_("'%s': unable to read %s"), name
, sha1_to_hex(sha1
));
390 static int grep_sha1(struct grep_opt
*opt
, const unsigned char *sha1
,
391 const char *filename
, int tree_name_len
)
393 struct strbuf pathbuf
= STRBUF_INIT
;
396 if (opt
->relative
&& opt
->prefix_length
) {
397 quote_path_relative(filename
+ tree_name_len
, -1, &pathbuf
,
399 strbuf_insert(&pathbuf
, 0, filename
, tree_name_len
);
401 strbuf_addstr(&pathbuf
, filename
);
404 name
= strbuf_detach(&pathbuf
, NULL
);
408 grep_sha1_async(opt
, name
, sha1
);
415 void *data
= load_sha1(sha1
, &sz
, name
);
419 hit
= grep_buffer(opt
, name
, data
, sz
);
427 static void *load_file(const char *filename
, size_t *sz
)
433 if (lstat(filename
, &st
) < 0) {
436 error(_("'%s': %s"), filename
, strerror(errno
));
439 if (!S_ISREG(st
.st_mode
))
441 *sz
= xsize_t(st
.st_size
);
442 i
= open(filename
, O_RDONLY
);
445 data
= xmalloc(*sz
+ 1);
446 if (st
.st_size
!= read_in_full(i
, data
, *sz
)) {
447 error(_("'%s': short read %s"), filename
, strerror(errno
));
457 static int grep_file(struct grep_opt
*opt
, const char *filename
)
459 struct strbuf buf
= STRBUF_INIT
;
462 if (opt
->relative
&& opt
->prefix_length
)
463 quote_path_relative(filename
, -1, &buf
, opt
->prefix
);
465 strbuf_addstr(&buf
, filename
);
466 name
= strbuf_detach(&buf
, NULL
);
470 grep_file_async(opt
, name
, filename
);
477 void *data
= load_file(filename
, &sz
);
481 hit
= grep_buffer(opt
, name
, data
, sz
);
489 static void append_path(struct grep_opt
*opt
, const void *data
, size_t len
)
491 struct string_list
*path_list
= opt
->output_priv
;
493 if (len
== 1 && *(const char *)data
== '\0')
495 string_list_append(path_list
, xstrndup(data
, len
));
498 static void run_pager(struct grep_opt
*opt
, const char *prefix
)
500 struct string_list
*path_list
= opt
->output_priv
;
501 const char **argv
= xmalloc(sizeof(const char *) * (path_list
->nr
+ 1));
504 for (i
= 0; i
< path_list
->nr
; i
++)
505 argv
[i
] = path_list
->items
[i
].string
;
506 argv
[path_list
->nr
] = NULL
;
508 if (prefix
&& chdir(prefix
))
509 die(_("Failed to chdir: %s"), prefix
);
510 status
= run_command_v_opt(argv
, RUN_USING_SHELL
);
516 static int grep_cache(struct grep_opt
*opt
, const struct pathspec
*pathspec
, int cached
)
522 for (nr
= 0; nr
< active_nr
; nr
++) {
523 struct cache_entry
*ce
= active_cache
[nr
];
524 if (!S_ISREG(ce
->ce_mode
))
526 if (!match_pathspec_depth(pathspec
, ce
->name
, ce_namelen(ce
), 0, NULL
))
528 if (skip_binary(opt
, ce
->name
))
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 */
550 if (hit
&& opt
->status_only
)
556 static int grep_tree(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
557 struct tree_desc
*tree
, struct strbuf
*base
, int tn_len
)
559 int hit
= 0, match
= 0;
560 struct name_entry entry
;
561 int old_baselen
= base
->len
;
563 while (tree_entry(tree
, &entry
)) {
564 int te_len
= tree_entry_len(entry
.path
, entry
.sha1
);
567 match
= tree_entry_interesting(&entry
, base
, tn_len
, pathspec
);
574 strbuf_add(base
, entry
.path
, te_len
);
576 if (S_ISREG(entry
.mode
)) {
577 hit
|= grep_sha1(opt
, entry
.sha1
, base
->buf
, tn_len
);
579 else if (S_ISDIR(entry
.mode
)) {
580 enum object_type type
;
581 struct tree_desc sub
;
585 data
= lock_and_read_sha1_file(entry
.sha1
, &type
, &size
);
587 die(_("unable to read tree (%s)"),
588 sha1_to_hex(entry
.sha1
));
590 strbuf_addch(base
, '/');
591 init_tree_desc(&sub
, data
, size
);
592 hit
|= grep_tree(opt
, pathspec
, &sub
, base
, tn_len
);
595 strbuf_setlen(base
, old_baselen
);
597 if (hit
&& opt
->status_only
)
603 static int grep_object(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
604 struct object
*obj
, const char *name
)
606 if (obj
->type
== OBJ_BLOB
)
607 return grep_sha1(opt
, obj
->sha1
, name
, 0);
608 if (obj
->type
== OBJ_COMMIT
|| obj
->type
== OBJ_TREE
) {
609 struct tree_desc tree
;
615 data
= read_object_with_reference(obj
->sha1
, tree_type
,
618 die(_("unable to read tree (%s)"), sha1_to_hex(obj
->sha1
));
620 len
= name
? strlen(name
) : 0;
621 strbuf_init(&base
, PATH_MAX
+ len
+ 1);
623 strbuf_add(&base
, name
, len
);
624 strbuf_addch(&base
, ':');
626 init_tree_desc(&tree
, data
, size
);
627 hit
= grep_tree(opt
, pathspec
, &tree
, &base
, base
.len
);
628 strbuf_release(&base
);
632 die(_("unable to grep from object of type %s"), typename(obj
->type
));
635 static int grep_objects(struct grep_opt
*opt
, const struct pathspec
*pathspec
,
636 const struct object_array
*list
)
640 const unsigned int nr
= list
->nr
;
642 for (i
= 0; i
< nr
; i
++) {
643 struct object
*real_obj
;
644 real_obj
= deref_tag(list
->objects
[i
].item
, NULL
, 0);
645 if (grep_object(opt
, pathspec
, real_obj
, list
->objects
[i
].name
)) {
647 if (opt
->status_only
)
654 static int grep_directory(struct grep_opt
*opt
, const struct pathspec
*pathspec
)
656 struct dir_struct dir
;
659 memset(&dir
, 0, sizeof(dir
));
660 setup_standard_excludes(&dir
);
662 fill_directory(&dir
, pathspec
->raw
);
663 for (i
= 0; i
< dir
.nr
; i
++) {
664 const char *name
= dir
.entries
[i
]->name
;
665 int namelen
= strlen(name
);
666 if (!match_pathspec_depth(pathspec
, name
, namelen
, 0, NULL
))
668 hit
|= grep_file(opt
, dir
.entries
[i
]->name
);
669 if (hit
&& opt
->status_only
)
675 static int context_callback(const struct option
*opt
, const char *arg
,
678 struct grep_opt
*grep_opt
= opt
->value
;
683 grep_opt
->pre_context
= grep_opt
->post_context
= 0;
686 value
= strtol(arg
, (char **)&endp
, 10);
688 return error(_("switch `%c' expects a numerical value"),
691 grep_opt
->pre_context
= grep_opt
->post_context
= value
;
695 static int file_callback(const struct option
*opt
, const char *arg
, int unset
)
697 struct grep_opt
*grep_opt
= opt
->value
;
698 int from_stdin
= !strcmp(arg
, "-");
701 struct strbuf sb
= STRBUF_INIT
;
703 patterns
= from_stdin
? stdin
: fopen(arg
, "r");
705 die_errno(_("cannot open '%s'"), arg
);
706 while (strbuf_getline(&sb
, patterns
, '\n') == 0) {
710 /* ignore empty line like grep does */
714 s
= strbuf_detach(&sb
, &len
);
715 append_grep_pat(grep_opt
, s
, len
, arg
, ++lno
, GREP_PATTERN
);
723 static int not_callback(const struct option
*opt
, const char *arg
, int unset
)
725 struct grep_opt
*grep_opt
= opt
->value
;
726 append_grep_pattern(grep_opt
, "--not", "command line", 0, GREP_NOT
);
730 static int and_callback(const struct option
*opt
, const char *arg
, int unset
)
732 struct grep_opt
*grep_opt
= opt
->value
;
733 append_grep_pattern(grep_opt
, "--and", "command line", 0, GREP_AND
);
737 static int open_callback(const struct option
*opt
, const char *arg
, int unset
)
739 struct grep_opt
*grep_opt
= opt
->value
;
740 append_grep_pattern(grep_opt
, "(", "command line", 0, GREP_OPEN_PAREN
);
744 static int close_callback(const struct option
*opt
, const char *arg
, int unset
)
746 struct grep_opt
*grep_opt
= opt
->value
;
747 append_grep_pattern(grep_opt
, ")", "command line", 0, GREP_CLOSE_PAREN
);
751 static int pattern_callback(const struct option
*opt
, const char *arg
,
754 struct grep_opt
*grep_opt
= opt
->value
;
755 append_grep_pattern(grep_opt
, arg
, "-e option", 0, GREP_PATTERN
);
759 static int help_callback(const struct option
*opt
, const char *arg
, int unset
)
764 int cmd_grep(int argc
, const char **argv
, const char *prefix
)
768 int seen_dashdash
= 0;
769 int external_grep_allowed__ignored
;
770 const char *show_in_pager
= NULL
, *default_pager
= "dummy";
772 struct object_array list
= OBJECT_ARRAY_INIT
;
773 const char **paths
= NULL
;
774 struct pathspec pathspec
;
775 struct string_list path_list
= STRING_LIST_INIT_NODUP
;
780 pattern_type_unspecified
= 0,
786 int pattern_type
= pattern_type_unspecified
;
788 struct option options
[] = {
789 OPT_BOOLEAN(0, "cached", &cached
,
790 "search in index instead of in the work tree"),
791 OPT_BOOLEAN(0, "index", &use_index
,
792 "--no-index finds in contents not managed by git"),
794 OPT_BOOLEAN('v', "invert-match", &opt
.invert
,
795 "show non-matching lines"),
796 OPT_BOOLEAN('i', "ignore-case", &opt
.ignore_case
,
797 "case insensitive matching"),
798 OPT_BOOLEAN('w', "word-regexp", &opt
.word_regexp
,
799 "match patterns only at word boundaries"),
800 OPT_SET_INT('a', "text", &opt
.binary
,
801 "process binary files as text", GREP_BINARY_TEXT
),
802 OPT_SET_INT('I', NULL
, &opt
.binary
,
803 "don't match patterns in binary files",
804 GREP_BINARY_NOMATCH
),
805 { OPTION_INTEGER
, 0, "max-depth", &opt
.max_depth
, "depth",
806 "descend at most <depth> levels", PARSE_OPT_NONEG
,
809 OPT_SET_INT('E', "extended-regexp", &pattern_type
,
810 "use extended POSIX regular expressions",
812 OPT_SET_INT('G', "basic-regexp", &pattern_type
,
813 "use basic POSIX regular expressions (default)",
815 OPT_SET_INT('F', "fixed-strings", &pattern_type
,
816 "interpret patterns as fixed strings",
818 OPT_SET_INT('P', "perl-regexp", &pattern_type
,
819 "use Perl-compatible regular expressions",
822 OPT_BOOLEAN('n', "line-number", &opt
.linenum
, "show line numbers"),
823 OPT_NEGBIT('h', NULL
, &opt
.pathname
, "don't show filenames", 1),
824 OPT_BIT('H', NULL
, &opt
.pathname
, "show filenames", 1),
825 OPT_NEGBIT(0, "full-name", &opt
.relative
,
826 "show filenames relative to top directory", 1),
827 OPT_BOOLEAN('l', "files-with-matches", &opt
.name_only
,
828 "show only filenames instead of matching lines"),
829 OPT_BOOLEAN(0, "name-only", &opt
.name_only
,
830 "synonym for --files-with-matches"),
831 OPT_BOOLEAN('L', "files-without-match",
832 &opt
.unmatch_name_only
,
833 "show only the names of files without match"),
834 OPT_BOOLEAN('z', "null", &opt
.null_following_name
,
835 "print NUL after filenames"),
836 OPT_BOOLEAN('c', "count", &opt
.count
,
837 "show the number of matches instead of matching lines"),
838 OPT__COLOR(&opt
.color
, "highlight matches"),
840 OPT_CALLBACK('C', NULL
, &opt
, "n",
841 "show <n> context lines before and after matches",
843 OPT_INTEGER('B', NULL
, &opt
.pre_context
,
844 "show <n> context lines before matches"),
845 OPT_INTEGER('A', NULL
, &opt
.post_context
,
846 "show <n> context lines after matches"),
847 OPT_NUMBER_CALLBACK(&opt
, "shortcut for -C NUM",
849 OPT_BOOLEAN('p', "show-function", &opt
.funcname
,
850 "show a line with the function name before matches"),
852 OPT_CALLBACK('f', NULL
, &opt
, "file",
853 "read patterns from file", file_callback
),
854 { OPTION_CALLBACK
, 'e', NULL
, &opt
, "pattern",
855 "match <pattern>", PARSE_OPT_NONEG
, pattern_callback
},
856 { OPTION_CALLBACK
, 0, "and", &opt
, NULL
,
857 "combine patterns specified with -e",
858 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, and_callback
},
859 OPT_BOOLEAN(0, "or", &dummy
, ""),
860 { OPTION_CALLBACK
, 0, "not", &opt
, NULL
, "",
861 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
, not_callback
},
862 { OPTION_CALLBACK
, '(', NULL
, &opt
, NULL
, "",
863 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
865 { OPTION_CALLBACK
, ')', NULL
, &opt
, NULL
, "",
866 PARSE_OPT_NOARG
| PARSE_OPT_NONEG
| PARSE_OPT_NODASH
,
868 OPT__QUIET(&opt
.status_only
,
869 "indicate hit with exit status without output"),
870 OPT_BOOLEAN(0, "all-match", &opt
.all_match
,
871 "show only matches from files that match all patterns"),
873 { OPTION_STRING
, 'O', "open-files-in-pager", &show_in_pager
,
874 "pager", "show matching files in the pager",
875 PARSE_OPT_OPTARG
, NULL
, (intptr_t)default_pager
},
876 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored
,
877 "allow calling of grep(1) (ignored by this build)"),
878 { OPTION_CALLBACK
, 0, "help-all", &options
, NULL
, "show usage",
879 PARSE_OPT_HIDDEN
| PARSE_OPT_NOARG
, help_callback
},
884 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
885 * to show usage information and exit.
887 if (argc
== 2 && !strcmp(argv
[1], "-h"))
888 usage_with_options(grep_usage
, options
);
890 memset(&opt
, 0, sizeof(opt
));
892 opt
.prefix_length
= (prefix
&& *prefix
) ? strlen(prefix
) : 0;
895 opt
.pattern_tail
= &opt
.pattern_list
;
896 opt
.header_tail
= &opt
.header_list
;
897 opt
.regflags
= REG_NEWLINE
;
900 strcpy(opt
.color_context
, "");
901 strcpy(opt
.color_filename
, "");
902 strcpy(opt
.color_function
, "");
903 strcpy(opt
.color_lineno
, "");
904 strcpy(opt
.color_match
, GIT_COLOR_BOLD_RED
);
905 strcpy(opt
.color_selected
, "");
906 strcpy(opt
.color_sep
, GIT_COLOR_CYAN
);
908 git_config(grep_config
, &opt
);
910 opt
.color
= git_use_color_default
;
913 * If there is no -- then the paths must exist in the working
914 * tree. If there is no explicit pattern specified with -e or
915 * -f, we take the first unrecognized non option to be the
916 * pattern, but then what follows it must be zero or more
917 * valid refs up to the -- (if exists), and then existing
918 * paths. If there is an explicit pattern, then the first
919 * unrecognized non option is the beginning of the refs list
920 * that continues up to the -- (if exists), and then paths.
922 argc
= parse_options(argc
, argv
, prefix
, options
, grep_usage
,
923 PARSE_OPT_KEEP_DASHDASH
|
924 PARSE_OPT_STOP_AT_NON_OPTION
|
925 PARSE_OPT_NO_INTERNAL_HELP
);
926 switch (pattern_type
) {
927 case pattern_type_fixed
:
931 case pattern_type_bre
:
934 opt
.regflags
&= ~REG_EXTENDED
;
936 case pattern_type_ere
:
939 opt
.regflags
|= REG_EXTENDED
;
941 case pattern_type_pcre
:
949 if (use_index
&& !startup_info
->have_repository
)
950 /* die the same way as if we did it at the beginning */
951 setup_git_directory();
954 * skip a -- separator; we know it cannot be
955 * separating revisions from pathnames if
956 * we haven't even had any patterns yet
958 if (argc
> 0 && !opt
.pattern_list
&& !strcmp(argv
[0], "--")) {
963 /* First unrecognized non-option token */
964 if (argc
> 0 && !opt
.pattern_list
) {
965 append_grep_pattern(&opt
, argv
[0], "command line", 0,
971 if (show_in_pager
== default_pager
)
972 show_in_pager
= git_pager(1);
976 opt
.null_following_name
= 1;
977 opt
.output_priv
= &path_list
;
978 opt
.output
= append_path
;
979 string_list_append(&path_list
, show_in_pager
);
982 if ((opt
.binary
& GREP_BINARY_NOMATCH
))
985 if (!opt
.pattern_list
)
986 die(_("no pattern given."));
987 if (!opt
.fixed
&& opt
.ignore_case
)
988 opt
.regflags
|= REG_ICASE
;
991 if (online_cpus() == 1 || !grep_threads_ok(&opt
))
995 if (opt
.pre_context
|| opt
.post_context
)
996 print_hunk_marks_between_files
= 1;
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
);
1062 die(_("--cached cannot be used with --no-index."));
1064 die(_("--no-index cannot be used with revs."));
1065 hit
= grep_directory(&opt
, &pathspec
);
1066 } else if (!list
.nr
) {
1070 hit
= grep_cache(&opt
, &pathspec
, cached
);
1073 die(_("both --cached and trees are given."));
1074 hit
= grep_objects(&opt
, &pathspec
, &list
);
1079 if (hit
&& show_in_pager
)
1080 run_pager(&opt
, prefix
);
1081 free_grep_patterns(&opt
);