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"
21 static char const * const grep_usage[] = {
22 "git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]",
26 static int use_threads = 1;
30 static pthread_t threads[THREADS];
32 static void *load_sha1(const unsigned char *sha1, unsigned long *size,
34 static void *load_file(const char *filename, size_t *sz);
36 enum work_type {WORK_SHA1, WORK_FILE};
38 /* We use one producer thread and THREADS consumer
39 * threads. The producer adds struct work_items to 'todo' and the
40 * consumers pick work items from the same array.
46 /* if type == WORK_SHA1, then 'identifier' is a SHA1,
47 * otherwise type == WORK_FILE, and 'identifier' is a NUL
48 * terminated filename.
55 /* In the range [todo_done, todo_start) in 'todo' we have work_items
56 * that have been or are processed by a consumer thread. We haven't
57 * written the result for these to stdout yet.
59 * The work_items in [todo_start, todo_end) are waiting to be picked
60 * up by a consumer thread.
62 * The ranges are modulo TODO_SIZE.
65 static struct work_item todo[TODO_SIZE];
66 static int todo_start;
70 /* Has all work items been added? */
71 static int all_work_added;
73 /* This lock protects all the variables above. */
74 static pthread_mutex_t grep_mutex;
76 static inline void grep_lock(void)
79 pthread_mutex_lock(&grep_mutex);
82 static inline void grep_unlock(void)
85 pthread_mutex_unlock(&grep_mutex);
88 /* Used to serialize calls to read_sha1_file. */
89 static pthread_mutex_t read_sha1_mutex;
91 static inline void read_sha1_lock(void)
94 pthread_mutex_lock(&read_sha1_mutex);
97 static inline void read_sha1_unlock(void)
100 pthread_mutex_unlock(&read_sha1_mutex);
103 /* Signalled when a new work_item is added to todo. */
104 static pthread_cond_t cond_add;
106 /* Signalled when the result from one work_item is written to
109 static pthread_cond_t cond_write;
111 /* Signalled when we are finished with everything. */
112 static pthread_cond_t cond_result;
114 static int skip_first_line;
116 static void add_work(enum work_type type, char *name, void *id)
120 while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
121 pthread_cond_wait(&cond_write, &grep_mutex);
124 todo[todo_end].type = type;
125 todo[todo_end].name = name;
126 todo[todo_end].identifier = id;
127 todo[todo_end].done = 0;
128 strbuf_reset(&todo[todo_end].out);
129 todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
131 pthread_cond_signal(&cond_add);
135 static struct work_item *get_work(void)
137 struct work_item *ret;
140 while (todo_start == todo_end && !all_work_added) {
141 pthread_cond_wait(&cond_add, &grep_mutex);
144 if (todo_start == todo_end && all_work_added) {
147 ret = &todo[todo_start];
148 todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
154 static void grep_sha1_async(struct grep_opt *opt, char *name,
155 const unsigned char *sha1)
160 add_work(WORK_SHA1, name, s);
163 static void grep_file_async(struct grep_opt *opt, char *name,
164 const char *filename)
166 add_work(WORK_FILE, name, xstrdup(filename));
169 static void work_done(struct work_item *w)
175 old_done = todo_done;
176 for(; todo[todo_done].done && todo_done != todo_start;
177 todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
178 w = &todo[todo_done];
180 const char *p = w->out.buf;
181 size_t len = w->out.len;
183 /* Skip the leading hunk mark of the first file. */
184 if (skip_first_line) {
193 write_or_die(1, p, len);
199 if (old_done != todo_done)
200 pthread_cond_signal(&cond_write);
202 if (all_work_added && todo_done == todo_end)
203 pthread_cond_signal(&cond_result);
208 static void *run(void *arg)
211 struct grep_opt *opt = arg;
214 struct work_item *w = get_work();
218 opt->output_priv = w;
219 if (w->type == WORK_SHA1) {
221 void* data = load_sha1(w->identifier, &sz, w->name);
224 hit |= grep_buffer(opt, w->name, data, sz);
227 } else if (w->type == WORK_FILE) {
229 void* data = load_file(w->identifier, &sz);
231 hit |= grep_buffer(opt, w->name, data, sz);
240 free_grep_patterns(arg);
243 return (void*) (intptr_t) hit;
246 static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
248 struct work_item *w = opt->output_priv;
249 strbuf_add(&w->out, buf, size);
252 static void start_threads(struct grep_opt *opt)
256 pthread_mutex_init(&grep_mutex, NULL);
257 pthread_mutex_init(&read_sha1_mutex, NULL);
258 pthread_mutex_init(&grep_attr_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_mutex_destroy(&grep_attr_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 if (userdiff_config(var, value) < 0)
331 if (!strcmp(var, "grep.extendedregexp")) {
332 if (git_config_bool(var, value))
333 opt->regflags |= REG_EXTENDED;
335 opt->regflags &= ~REG_EXTENDED;
339 if (!strcmp(var, "grep.linenumber")) {
340 opt->linenum = git_config_bool(var, value);
344 if (!strcmp(var, "color.grep"))
345 opt->color = git_config_colorbool(var, value);
346 else if (!strcmp(var, "color.grep.context"))
347 color = opt->color_context;
348 else if (!strcmp(var, "color.grep.filename"))
349 color = opt->color_filename;
350 else if (!strcmp(var, "color.grep.function"))
351 color = opt->color_function;
352 else if (!strcmp(var, "color.grep.linenumber"))
353 color = opt->color_lineno;
354 else if (!strcmp(var, "color.grep.match"))
355 color = opt->color_match;
356 else if (!strcmp(var, "color.grep.selected"))
357 color = opt->color_selected;
358 else if (!strcmp(var, "color.grep.separator"))
359 color = opt->color_sep;
361 return git_color_default_config(var, value, cb);
364 return config_error_nonbool(var);
365 color_parse(value, var, color);
370 static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
375 data = read_sha1_file(sha1, type, size);
380 static void *load_sha1(const unsigned char *sha1, unsigned long *size,
383 enum object_type type;
384 void *data = lock_and_read_sha1_file(sha1, &type, size);
387 error(_("'%s': unable to read %s"), name, sha1_to_hex(sha1));
392 static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
393 const char *filename, int tree_name_len)
395 struct strbuf pathbuf = STRBUF_INIT;
398 if (opt->relative && opt->prefix_length) {
399 quote_path_relative(filename + tree_name_len, -1, &pathbuf,
401 strbuf_insert(&pathbuf, 0, filename, tree_name_len);
403 strbuf_addstr(&pathbuf, filename);
406 name = strbuf_detach(&pathbuf, NULL);
410 grep_sha1_async(opt, name, sha1);
417 void *data = load_sha1(sha1, &sz, name);
421 hit = grep_buffer(opt, name, data, sz);
429 static void *load_file(const char *filename, size_t *sz)
435 if (lstat(filename, &st) < 0) {
438 error(_("'%s': %s"), filename, strerror(errno));
441 if (!S_ISREG(st.st_mode))
443 *sz = xsize_t(st.st_size);
444 i = open(filename, O_RDONLY);
447 data = xmalloc(*sz + 1);
448 if (st.st_size != read_in_full(i, data, *sz)) {
449 error(_("'%s': short read %s"), filename, strerror(errno));
459 static int grep_file(struct grep_opt *opt, const char *filename)
461 struct strbuf buf = STRBUF_INIT;
464 if (opt->relative && opt->prefix_length)
465 quote_path_relative(filename, -1, &buf, opt->prefix);
467 strbuf_addstr(&buf, filename);
468 name = strbuf_detach(&buf, NULL);
472 grep_file_async(opt, name, filename);
479 void *data = load_file(filename, &sz);
483 hit = grep_buffer(opt, name, data, sz);
491 static void append_path(struct grep_opt *opt, const void *data, size_t len)
493 struct string_list *path_list = opt->output_priv;
495 if (len == 1 && *(const char *)data == '\0')
497 string_list_append(path_list, xstrndup(data, len));
500 static void run_pager(struct grep_opt *opt, const char *prefix)
502 struct string_list *path_list = opt->output_priv;
503 const char **argv = xmalloc(sizeof(const char *) * (path_list->nr + 1));
506 for (i = 0; i < path_list->nr; i++)
507 argv[i] = path_list->items[i].string;
508 argv[path_list->nr] = NULL;
510 if (prefix && chdir(prefix))
511 die(_("Failed to chdir: %s"), prefix);
512 status = run_command_v_opt(argv, RUN_USING_SHELL);
518 static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached)
524 for (nr = 0; nr < active_nr; nr++) {
525 struct cache_entry *ce = active_cache[nr];
526 if (!S_ISREG(ce->ce_mode))
528 if (!match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL))
531 * If CE_VALID is on, we assume worktree file and its cache entry
532 * are identical, even if worktree file has been modified, so use
533 * cache version instead
535 if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) {
538 hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
541 hit |= grep_file(opt, ce->name);
545 } while (nr < active_nr &&
546 !strcmp(ce->name, active_cache[nr]->name));
547 nr--; /* compensate for loop control */
549 if (hit && opt->status_only)
555 static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
556 struct tree_desc *tree, struct strbuf *base, int tn_len)
559 enum interesting match = entry_not_interesting;
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);
566 if (match != all_entries_interesting) {
567 match = tree_entry_interesting(&entry, base, tn_len, pathspec);
568 if (match == all_entries_not_interesting)
570 if (match == entry_not_interesting)
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;
616 data = read_object_with_reference(obj->sha1, tree_type,
621 die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1));
623 len = name ? strlen(name) : 0;
624 strbuf_init(&base, PATH_MAX + len + 1);
626 strbuf_add(&base, name, len);
627 strbuf_addch(&base, ':');
629 init_tree_desc(&tree, data, size);
630 hit = grep_tree(opt, pathspec, &tree, &base, base.len);
631 strbuf_release(&base);
635 die(_("unable to grep from object of type %s"), typename(obj->type));
638 static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
639 const struct object_array *list)
643 const unsigned int nr = list->nr;
645 for (i = 0; i < nr; i++) {
646 struct object *real_obj;
647 real_obj = deref_tag(list->objects[i].item, NULL, 0);
648 if (grep_object(opt, pathspec, real_obj, list->objects[i].name)) {
650 if (opt->status_only)
657 static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
660 struct dir_struct dir;
663 memset(&dir, 0, sizeof(dir));
665 setup_standard_excludes(&dir);
667 fill_directory(&dir, pathspec->raw);
668 for (i = 0; i < dir.nr; i++) {
669 const char *name = dir.entries[i]->name;
670 int namelen = strlen(name);
671 if (!match_pathspec_depth(pathspec, name, namelen, 0, NULL))
673 hit |= grep_file(opt, dir.entries[i]->name);
674 if (hit && opt->status_only)
680 static int context_callback(const struct option *opt, const char *arg,
683 struct grep_opt *grep_opt = opt->value;
688 grep_opt->pre_context = grep_opt->post_context = 0;
691 value = strtol(arg, (char **)&endp, 10);
693 return error(_("switch `%c' expects a numerical value"),
696 grep_opt->pre_context = grep_opt->post_context = value;
700 static int file_callback(const struct option *opt, const char *arg, int unset)
702 struct grep_opt *grep_opt = opt->value;
703 int from_stdin = !strcmp(arg, "-");
706 struct strbuf sb = STRBUF_INIT;
708 patterns = from_stdin ? stdin : fopen(arg, "r");
710 die_errno(_("cannot open '%s'"), arg);
711 while (strbuf_getline(&sb, patterns, '\n') == 0) {
715 /* ignore empty line like grep does */
719 s = strbuf_detach(&sb, &len);
720 append_grep_pat(grep_opt, s, len, arg, ++lno, GREP_PATTERN);
728 static int not_callback(const struct option *opt, const char *arg, int unset)
730 struct grep_opt *grep_opt = opt->value;
731 append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
735 static int and_callback(const struct option *opt, const char *arg, int unset)
737 struct grep_opt *grep_opt = opt->value;
738 append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
742 static int open_callback(const struct option *opt, const char *arg, int unset)
744 struct grep_opt *grep_opt = opt->value;
745 append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
749 static int close_callback(const struct option *opt, const char *arg, int unset)
751 struct grep_opt *grep_opt = opt->value;
752 append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
756 static int pattern_callback(const struct option *opt, const char *arg,
759 struct grep_opt *grep_opt = opt->value;
760 append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
764 static int help_callback(const struct option *opt, const char *arg, int unset)
769 int cmd_grep(int argc, const char **argv, const char *prefix)
772 int cached = 0, untracked = 0, opt_exclude = -1;
773 int seen_dashdash = 0;
774 int external_grep_allowed__ignored;
775 const char *show_in_pager = NULL, *default_pager = "dummy";
777 struct object_array list = OBJECT_ARRAY_INIT;
778 const char **paths = NULL;
779 struct pathspec pathspec;
780 struct string_list path_list = STRING_LIST_INIT_NODUP;
785 pattern_type_unspecified = 0,
791 int pattern_type = pattern_type_unspecified;
793 struct option options[] = {
794 OPT_BOOLEAN(0, "cached", &cached,
795 "search in index instead of in the work tree"),
796 { OPTION_BOOLEAN, 0, "index", &use_index, NULL,
797 "finds in contents not managed by git",
798 PARSE_OPT_NOARG | PARSE_OPT_NEGHELP },
799 OPT_BOOLEAN(0, "untracked", &untracked,
800 "search in both tracked and untracked files"),
801 OPT_SET_INT(0, "exclude-standard", &opt_exclude,
802 "search also in ignored files", 1),
804 OPT_BOOLEAN('v', "invert-match", &opt.invert,
805 "show non-matching lines"),
806 OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
807 "case insensitive matching"),
808 OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
809 "match patterns only at word boundaries"),
810 OPT_SET_INT('a', "text", &opt.binary,
811 "process binary files as text", GREP_BINARY_TEXT),
812 OPT_SET_INT('I', NULL, &opt.binary,
813 "don't match patterns in binary files",
814 GREP_BINARY_NOMATCH),
815 { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, "depth",
816 "descend at most <depth> levels", PARSE_OPT_NONEG,
819 OPT_SET_INT('E', "extended-regexp", &pattern_type,
820 "use extended POSIX regular expressions",
822 OPT_SET_INT('G', "basic-regexp", &pattern_type,
823 "use basic POSIX regular expressions (default)",
825 OPT_SET_INT('F', "fixed-strings", &pattern_type,
826 "interpret patterns as fixed strings",
828 OPT_SET_INT('P', "perl-regexp", &pattern_type,
829 "use Perl-compatible regular expressions",
832 OPT_BOOLEAN('n', "line-number", &opt.linenum, "show line numbers"),
833 OPT_NEGBIT('h', NULL, &opt.pathname, "don't show filenames", 1),
834 OPT_BIT('H', NULL, &opt.pathname, "show filenames", 1),
835 OPT_NEGBIT(0, "full-name", &opt.relative,
836 "show filenames relative to top directory", 1),
837 OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
838 "show only filenames instead of matching lines"),
839 OPT_BOOLEAN(0, "name-only", &opt.name_only,
840 "synonym for --files-with-matches"),
841 OPT_BOOLEAN('L', "files-without-match",
842 &opt.unmatch_name_only,
843 "show only the names of files without match"),
844 OPT_BOOLEAN('z', "null", &opt.null_following_name,
845 "print NUL after filenames"),
846 OPT_BOOLEAN('c', "count", &opt.count,
847 "show the number of matches instead of matching lines"),
848 OPT__COLOR(&opt.color, "highlight matches"),
849 OPT_BOOLEAN(0, "break", &opt.file_break,
850 "print empty line between matches from different files"),
851 OPT_BOOLEAN(0, "heading", &opt.heading,
852 "show filename only once above matches from same file"),
854 OPT_CALLBACK('C', "context", &opt, "n",
855 "show <n> context lines before and after matches",
857 OPT_INTEGER('B', "before-context", &opt.pre_context,
858 "show <n> context lines before matches"),
859 OPT_INTEGER('A', "after-context", &opt.post_context,
860 "show <n> context lines after matches"),
861 OPT_NUMBER_CALLBACK(&opt, "shortcut for -C NUM",
863 OPT_BOOLEAN('p', "show-function", &opt.funcname,
864 "show a line with the function name before matches"),
865 OPT_BOOLEAN('W', "function-context", &opt.funcbody,
866 "show the surrounding function"),
868 OPT_CALLBACK('f', NULL, &opt, "file",
869 "read patterns from file", file_callback),
870 { OPTION_CALLBACK, 'e', NULL, &opt, "pattern",
871 "match <pattern>", PARSE_OPT_NONEG, pattern_callback },
872 { OPTION_CALLBACK, 0, "and", &opt, NULL,
873 "combine patterns specified with -e",
874 PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
875 OPT_BOOLEAN(0, "or", &dummy, ""),
876 { OPTION_CALLBACK, 0, "not", &opt, NULL, "",
877 PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
878 { OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
879 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
881 { OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
882 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
884 OPT__QUIET(&opt.status_only,
885 "indicate hit with exit status without output"),
886 OPT_BOOLEAN(0, "all-match", &opt.all_match,
887 "show only matches from files that match all patterns"),
889 { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
890 "pager", "show matching files in the pager",
891 PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
892 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
893 "allow calling of grep(1) (ignored by this build)"),
894 { OPTION_CALLBACK, 0, "help-all", &options, NULL, "show usage",
895 PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
900 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
901 * to show usage information and exit.
903 if (argc == 2 && !strcmp(argv[1], "-h"))
904 usage_with_options(grep_usage, options);
906 memset(&opt, 0, sizeof(opt));
908 opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
911 opt.pattern_tail = &opt.pattern_list;
912 opt.header_tail = &opt.header_list;
913 opt.regflags = REG_NEWLINE;
916 strcpy(opt.color_context, "");
917 strcpy(opt.color_filename, "");
918 strcpy(opt.color_function, "");
919 strcpy(opt.color_lineno, "");
920 strcpy(opt.color_match, GIT_COLOR_BOLD_RED);
921 strcpy(opt.color_selected, "");
922 strcpy(opt.color_sep, GIT_COLOR_CYAN);
924 git_config(grep_config, &opt);
927 * If there is no -- then the paths must exist in the working
928 * tree. If there is no explicit pattern specified with -e or
929 * -f, we take the first unrecognized non option to be the
930 * pattern, but then what follows it must be zero or more
931 * valid refs up to the -- (if exists), and then existing
932 * paths. If there is an explicit pattern, then the first
933 * unrecognized non option is the beginning of the refs list
934 * that continues up to the -- (if exists), and then paths.
936 argc = parse_options(argc, argv, prefix, options, grep_usage,
937 PARSE_OPT_KEEP_DASHDASH |
938 PARSE_OPT_STOP_AT_NON_OPTION |
939 PARSE_OPT_NO_INTERNAL_HELP);
940 switch (pattern_type) {
941 case pattern_type_fixed:
945 case pattern_type_bre:
948 opt.regflags &= ~REG_EXTENDED;
950 case pattern_type_ere:
953 opt.regflags |= REG_EXTENDED;
955 case pattern_type_pcre:
963 if (use_index && !startup_info->have_repository)
964 /* die the same way as if we did it at the beginning */
965 setup_git_directory();
968 * skip a -- separator; we know it cannot be
969 * separating revisions from pathnames if
970 * we haven't even had any patterns yet
972 if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
977 /* First unrecognized non-option token */
978 if (argc > 0 && !opt.pattern_list) {
979 append_grep_pattern(&opt, argv[0], "command line", 0,
985 if (show_in_pager == default_pager)
986 show_in_pager = git_pager(1);
990 opt.null_following_name = 1;
991 opt.output_priv = &path_list;
992 opt.output = append_path;
993 string_list_append(&path_list, show_in_pager);
997 if (!opt.pattern_list)
998 die(_("no pattern given."));
999 if (!opt.fixed && opt.ignore_case)
1000 opt.regflags |= REG_ICASE;
1002 compile_grep_patterns(&opt);
1004 /* Check revs and then paths */
1005 for (i = 0; i < argc; i++) {
1006 const char *arg = argv[i];
1007 unsigned char sha1[20];
1009 if (!get_sha1(arg, sha1)) {
1010 struct object *object = parse_object(sha1);
1012 die(_("bad object %s"), arg);
1013 add_object_array(object, arg, &list);
1016 if (!strcmp(arg, "--")) {
1024 if (list.nr || cached || online_cpus() == 1)
1030 opt.use_threads = use_threads;
1034 if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1035 && (opt.pre_context || opt.post_context ||
1036 opt.file_break || opt.funcbody))
1037 skip_first_line = 1;
1038 start_threads(&opt);
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);