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 N_("git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]"),
26 static int use_threads = 1;
30 static pthread_t threads[THREADS];
32 /* We use one producer thread and THREADS consumer
33 * threads. The producer adds struct work_items to 'todo' and the
34 * consumers pick work items from the same array.
37 struct grep_source source;
42 /* In the range [todo_done, todo_start) in 'todo' we have work_items
43 * that have been or are processed by a consumer thread. We haven't
44 * written the result for these to stdout yet.
46 * The work_items in [todo_start, todo_end) are waiting to be picked
47 * up by a consumer thread.
49 * The ranges are modulo TODO_SIZE.
52 static struct work_item todo[TODO_SIZE];
53 static int todo_start;
57 /* Has all work items been added? */
58 static int all_work_added;
60 /* This lock protects all the variables above. */
61 static pthread_mutex_t grep_mutex;
63 static inline void grep_lock(void)
66 pthread_mutex_lock(&grep_mutex);
69 static inline void grep_unlock(void)
72 pthread_mutex_unlock(&grep_mutex);
75 /* Signalled when a new work_item is added to todo. */
76 static pthread_cond_t cond_add;
78 /* Signalled when the result from one work_item is written to
81 static pthread_cond_t cond_write;
83 /* Signalled when we are finished with everything. */
84 static pthread_cond_t cond_result;
86 static int skip_first_line;
88 static void add_work(struct grep_opt *opt, enum grep_source_type type,
89 const char *name, const void *id)
93 while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
94 pthread_cond_wait(&cond_write, &grep_mutex);
97 grep_source_init(&todo[todo_end].source, type, name, id);
98 if (opt->binary != GREP_BINARY_TEXT)
99 grep_source_load_driver(&todo[todo_end].source);
100 todo[todo_end].done = 0;
101 strbuf_reset(&todo[todo_end].out);
102 todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
104 pthread_cond_signal(&cond_add);
108 static struct work_item *get_work(void)
110 struct work_item *ret;
113 while (todo_start == todo_end && !all_work_added) {
114 pthread_cond_wait(&cond_add, &grep_mutex);
117 if (todo_start == todo_end && all_work_added) {
120 ret = &todo[todo_start];
121 todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
127 static void work_done(struct work_item *w)
133 old_done = todo_done;
134 for(; todo[todo_done].done && todo_done != todo_start;
135 todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
136 w = &todo[todo_done];
138 const char *p = w->out.buf;
139 size_t len = w->out.len;
141 /* Skip the leading hunk mark of the first file. */
142 if (skip_first_line) {
151 write_or_die(1, p, len);
153 grep_source_clear(&w->source);
156 if (old_done != todo_done)
157 pthread_cond_signal(&cond_write);
159 if (all_work_added && todo_done == todo_end)
160 pthread_cond_signal(&cond_result);
165 static void *run(void *arg)
168 struct grep_opt *opt = arg;
171 struct work_item *w = get_work();
175 opt->output_priv = w;
176 hit |= grep_source(opt, &w->source);
177 grep_source_clear_data(&w->source);
180 free_grep_patterns(arg);
183 return (void*) (intptr_t) hit;
186 static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
188 struct work_item *w = opt->output_priv;
189 strbuf_add(&w->out, buf, size);
192 static void start_threads(struct grep_opt *opt)
196 pthread_mutex_init(&grep_mutex, NULL);
197 pthread_mutex_init(&grep_read_mutex, NULL);
198 pthread_mutex_init(&grep_attr_mutex, NULL);
199 pthread_cond_init(&cond_add, NULL);
200 pthread_cond_init(&cond_write, NULL);
201 pthread_cond_init(&cond_result, NULL);
204 for (i = 0; i < ARRAY_SIZE(todo); i++) {
205 strbuf_init(&todo[i].out, 0);
208 for (i = 0; i < ARRAY_SIZE(threads); i++) {
210 struct grep_opt *o = grep_opt_dup(opt);
211 o->output = strbuf_out;
213 compile_grep_patterns(o);
214 err = pthread_create(&threads[i], NULL, run, o);
217 die(_("grep: failed to create thread: %s"),
222 static int wait_all(void)
230 /* Wait until all work is done. */
231 while (todo_done != todo_end)
232 pthread_cond_wait(&cond_result, &grep_mutex);
234 /* Wake up all the consumer threads so they can see that there
235 * is no more work to do.
237 pthread_cond_broadcast(&cond_add);
240 for (i = 0; i < ARRAY_SIZE(threads); i++) {
242 pthread_join(threads[i], &h);
243 hit |= (int) (intptr_t) h;
246 pthread_mutex_destroy(&grep_mutex);
247 pthread_mutex_destroy(&grep_read_mutex);
248 pthread_mutex_destroy(&grep_attr_mutex);
249 pthread_cond_destroy(&cond_add);
250 pthread_cond_destroy(&cond_write);
251 pthread_cond_destroy(&cond_result);
256 #else /* !NO_PTHREADS */
258 static int wait_all(void)
264 static int parse_pattern_type_arg(const char *opt, const char *arg)
266 if (!strcmp(arg, "default"))
267 return GREP_PATTERN_TYPE_UNSPECIFIED;
268 else if (!strcmp(arg, "basic"))
269 return GREP_PATTERN_TYPE_BRE;
270 else if (!strcmp(arg, "extended"))
271 return GREP_PATTERN_TYPE_ERE;
272 else if (!strcmp(arg, "fixed"))
273 return GREP_PATTERN_TYPE_FIXED;
274 else if (!strcmp(arg, "perl"))
275 return GREP_PATTERN_TYPE_PCRE;
276 die("bad %s argument: %s", opt, arg);
279 static void grep_pattern_type_options(const int pattern_type, struct grep_opt *opt)
281 switch (pattern_type) {
282 case GREP_PATTERN_TYPE_UNSPECIFIED:
285 case GREP_PATTERN_TYPE_BRE:
288 opt->regflags &= ~REG_EXTENDED;
291 case GREP_PATTERN_TYPE_ERE:
294 opt->regflags |= REG_EXTENDED;
297 case GREP_PATTERN_TYPE_FIXED:
300 opt->regflags &= ~REG_EXTENDED;
303 case GREP_PATTERN_TYPE_PCRE:
306 opt->regflags &= ~REG_EXTENDED;
311 static struct grep_opt grep_defaults;
314 * Initialize the grep_defaults template with hardcoded defaults.
315 * We could let the compiler do this, but without C99 initializers
316 * the code gets unwieldy and unreadable, so...
318 static void init_grep_defaults(void)
320 struct grep_opt *opt = &grep_defaults;
322 memset(opt, 0, sizeof(*opt));
325 opt->regflags = REG_NEWLINE;
327 opt->pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED;
328 opt->extended_regexp_option = 0;
329 strcpy(opt->color_context, "");
330 strcpy(opt->color_filename, "");
331 strcpy(opt->color_function, "");
332 strcpy(opt->color_lineno, "");
333 strcpy(opt->color_match, GIT_COLOR_BOLD_RED);
334 strcpy(opt->color_selected, "");
335 strcpy(opt->color_sep, GIT_COLOR_CYAN);
340 * Read the configuration file once and store it in
341 * the grep_defaults template.
343 static int grep_config(const char *var, const char *value, void *cb)
345 struct grep_opt *opt = &grep_defaults;
348 if (userdiff_config(var, value) < 0)
351 if (!strcmp(var, "grep.extendedregexp")) {
352 if (git_config_bool(var, value))
353 opt->extended_regexp_option = 1;
355 opt->extended_regexp_option = 0;
359 if (!strcmp(var, "grep.patterntype")) {
360 opt->pattern_type_option = parse_pattern_type_arg(var, value);
364 if (!strcmp(var, "grep.linenumber")) {
365 opt->linenum = git_config_bool(var, value);
369 if (!strcmp(var, "color.grep"))
370 opt->color = git_config_colorbool(var, value);
371 else if (!strcmp(var, "color.grep.context"))
372 color = opt->color_context;
373 else if (!strcmp(var, "color.grep.filename"))
374 color = opt->color_filename;
375 else if (!strcmp(var, "color.grep.function"))
376 color = opt->color_function;
377 else if (!strcmp(var, "color.grep.linenumber"))
378 color = opt->color_lineno;
379 else if (!strcmp(var, "color.grep.match"))
380 color = opt->color_match;
381 else if (!strcmp(var, "color.grep.selected"))
382 color = opt->color_selected;
383 else if (!strcmp(var, "color.grep.separator"))
384 color = opt->color_sep;
388 return config_error_nonbool(var);
389 color_parse(value, var, color);
395 * Initialize one instance of grep_opt and copy the
396 * default values from the template we read the configuration
397 * information in an earlier call to git_config(grep_config).
399 static void grep_init(struct grep_opt *opt, const char *prefix)
401 struct grep_opt *def = &grep_defaults;
403 memset(opt, 0, sizeof(*opt));
404 opt->prefix = prefix;
405 opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
406 opt->pattern_tail = &opt->pattern_list;
407 opt->header_tail = &opt->header_list;
409 opt->color = def->color;
410 opt->extended_regexp_option = def->extended_regexp_option;
411 opt->pattern_type_option = def->pattern_type_option;
412 opt->linenum = def->linenum;
413 opt->max_depth = def->max_depth;
414 opt->pathname = def->pathname;
415 opt->regflags = def->regflags;
416 opt->relative = def->relative;
418 strcpy(opt->color_context, def->color_context);
419 strcpy(opt->color_filename, def->color_filename);
420 strcpy(opt->color_function, def->color_function);
421 strcpy(opt->color_lineno, def->color_lineno);
422 strcpy(opt->color_match, def->color_match);
423 strcpy(opt->color_selected, def->color_selected);
424 strcpy(opt->color_sep, def->color_sep);
427 static int grep_cmd_config(const char *var, const char *value, void *cb)
429 int st = grep_config(var, value, cb);
430 if (git_color_default_config(var, value, cb) < 0)
435 static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
440 data = read_sha1_file(sha1, type, size);
445 static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
446 const char *filename, int tree_name_len)
448 struct strbuf pathbuf = STRBUF_INIT;
450 if (opt->relative && opt->prefix_length) {
451 quote_path_relative(filename + tree_name_len, -1, &pathbuf,
453 strbuf_insert(&pathbuf, 0, filename, tree_name_len);
455 strbuf_addstr(&pathbuf, filename);
460 add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, sha1);
461 strbuf_release(&pathbuf);
466 struct grep_source gs;
469 grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, sha1);
470 strbuf_release(&pathbuf);
471 hit = grep_source(opt, &gs);
473 grep_source_clear(&gs);
478 static int grep_file(struct grep_opt *opt, const char *filename)
480 struct strbuf buf = STRBUF_INIT;
482 if (opt->relative && opt->prefix_length)
483 quote_path_relative(filename, -1, &buf, opt->prefix);
485 strbuf_addstr(&buf, filename);
489 add_work(opt, GREP_SOURCE_FILE, buf.buf, filename);
490 strbuf_release(&buf);
495 struct grep_source gs;
498 grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename);
499 strbuf_release(&buf);
500 hit = grep_source(opt, &gs);
502 grep_source_clear(&gs);
507 static void append_path(struct grep_opt *opt, const void *data, size_t len)
509 struct string_list *path_list = opt->output_priv;
511 if (len == 1 && *(const char *)data == '\0')
513 string_list_append(path_list, xstrndup(data, len));
516 static void run_pager(struct grep_opt *opt, const char *prefix)
518 struct string_list *path_list = opt->output_priv;
519 const char **argv = xmalloc(sizeof(const char *) * (path_list->nr + 1));
522 for (i = 0; i < path_list->nr; i++)
523 argv[i] = path_list->items[i].string;
524 argv[path_list->nr] = NULL;
526 if (prefix && chdir(prefix))
527 die(_("Failed to chdir: %s"), prefix);
528 status = run_command_v_opt(argv, RUN_USING_SHELL);
534 static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached)
540 for (nr = 0; nr < active_nr; nr++) {
541 struct cache_entry *ce = active_cache[nr];
542 if (!S_ISREG(ce->ce_mode))
544 if (!match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL))
547 * If CE_VALID is on, we assume worktree file and its cache entry
548 * are identical, even if worktree file has been modified, so use
549 * cache version instead
551 if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) {
554 hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
557 hit |= grep_file(opt, ce->name);
561 } while (nr < active_nr &&
562 !strcmp(ce->name, active_cache[nr]->name));
563 nr--; /* compensate for loop control */
565 if (hit && opt->status_only)
571 static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
572 struct tree_desc *tree, struct strbuf *base, int tn_len)
575 enum interesting match = entry_not_interesting;
576 struct name_entry entry;
577 int old_baselen = base->len;
579 while (tree_entry(tree, &entry)) {
580 int te_len = tree_entry_len(&entry);
582 if (match != all_entries_interesting) {
583 match = tree_entry_interesting(&entry, base, tn_len, pathspec);
584 if (match == all_entries_not_interesting)
586 if (match == entry_not_interesting)
590 strbuf_add(base, entry.path, te_len);
592 if (S_ISREG(entry.mode)) {
593 hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len);
595 else if (S_ISDIR(entry.mode)) {
596 enum object_type type;
597 struct tree_desc sub;
601 data = lock_and_read_sha1_file(entry.sha1, &type, &size);
603 die(_("unable to read tree (%s)"),
604 sha1_to_hex(entry.sha1));
606 strbuf_addch(base, '/');
607 init_tree_desc(&sub, data, size);
608 hit |= grep_tree(opt, pathspec, &sub, base, tn_len);
611 strbuf_setlen(base, old_baselen);
613 if (hit && opt->status_only)
619 static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
620 struct object *obj, const char *name)
622 if (obj->type == OBJ_BLOB)
623 return grep_sha1(opt, obj->sha1, name, 0);
624 if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
625 struct tree_desc tree;
632 data = read_object_with_reference(obj->sha1, tree_type,
637 die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1));
639 len = name ? strlen(name) : 0;
640 strbuf_init(&base, PATH_MAX + len + 1);
642 strbuf_add(&base, name, len);
643 strbuf_addch(&base, ':');
645 init_tree_desc(&tree, data, size);
646 hit = grep_tree(opt, pathspec, &tree, &base, base.len);
647 strbuf_release(&base);
651 die(_("unable to grep from object of type %s"), typename(obj->type));
654 static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
655 const struct object_array *list)
659 const unsigned int nr = list->nr;
661 for (i = 0; i < nr; i++) {
662 struct object *real_obj;
663 real_obj = deref_tag(list->objects[i].item, NULL, 0);
664 if (grep_object(opt, pathspec, real_obj, list->objects[i].name)) {
666 if (opt->status_only)
673 static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
676 struct dir_struct dir;
679 memset(&dir, 0, sizeof(dir));
681 setup_standard_excludes(&dir);
683 fill_directory(&dir, pathspec->raw);
684 for (i = 0; i < dir.nr; i++) {
685 const char *name = dir.entries[i]->name;
686 int namelen = strlen(name);
687 if (!match_pathspec_depth(pathspec, name, namelen, 0, NULL))
689 hit |= grep_file(opt, dir.entries[i]->name);
690 if (hit && opt->status_only)
696 static int context_callback(const struct option *opt, const char *arg,
699 struct grep_opt *grep_opt = opt->value;
704 grep_opt->pre_context = grep_opt->post_context = 0;
707 value = strtol(arg, (char **)&endp, 10);
709 return error(_("switch `%c' expects a numerical value"),
712 grep_opt->pre_context = grep_opt->post_context = value;
716 static int file_callback(const struct option *opt, const char *arg, int unset)
718 struct grep_opt *grep_opt = opt->value;
719 int from_stdin = !strcmp(arg, "-");
722 struct strbuf sb = STRBUF_INIT;
724 patterns = from_stdin ? stdin : fopen(arg, "r");
726 die_errno(_("cannot open '%s'"), arg);
727 while (strbuf_getline(&sb, patterns, '\n') == 0) {
728 /* ignore empty line like grep does */
732 append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
741 static int not_callback(const struct option *opt, const char *arg, int unset)
743 struct grep_opt *grep_opt = opt->value;
744 append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
748 static int and_callback(const struct option *opt, const char *arg, int unset)
750 struct grep_opt *grep_opt = opt->value;
751 append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
755 static int open_callback(const struct option *opt, const char *arg, int unset)
757 struct grep_opt *grep_opt = opt->value;
758 append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
762 static int close_callback(const struct option *opt, const char *arg, int unset)
764 struct grep_opt *grep_opt = opt->value;
765 append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
769 static int pattern_callback(const struct option *opt, const char *arg,
772 struct grep_opt *grep_opt = opt->value;
773 append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
777 static int help_callback(const struct option *opt, const char *arg, int unset)
782 int cmd_grep(int argc, const char **argv, const char *prefix)
785 int cached = 0, untracked = 0, opt_exclude = -1;
786 int seen_dashdash = 0;
787 int external_grep_allowed__ignored;
788 const char *show_in_pager = NULL, *default_pager = "dummy";
790 struct object_array list = OBJECT_ARRAY_INIT;
791 const char **paths = NULL;
792 struct pathspec pathspec;
793 struct string_list path_list = STRING_LIST_INIT_NODUP;
797 int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
799 struct option options[] = {
800 OPT_BOOLEAN(0, "cached", &cached,
801 N_("search in index instead of in the work tree")),
802 OPT_NEGBIT(0, "no-index", &use_index,
803 N_("find in contents not managed by git"), 1),
804 OPT_BOOLEAN(0, "untracked", &untracked,
805 N_("search in both tracked and untracked files")),
806 OPT_SET_INT(0, "exclude-standard", &opt_exclude,
807 N_("search also in ignored files"), 1),
809 OPT_BOOLEAN('v', "invert-match", &opt.invert,
810 N_("show non-matching lines")),
811 OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
812 N_("case insensitive matching")),
813 OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
814 N_("match patterns only at word boundaries")),
815 OPT_SET_INT('a', "text", &opt.binary,
816 N_("process binary files as text"), GREP_BINARY_TEXT),
817 OPT_SET_INT('I', NULL, &opt.binary,
818 N_("don't match patterns in binary files"),
819 GREP_BINARY_NOMATCH),
820 { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
821 N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
824 OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
825 N_("use extended POSIX regular expressions"),
826 GREP_PATTERN_TYPE_ERE),
827 OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
828 N_("use basic POSIX regular expressions (default)"),
829 GREP_PATTERN_TYPE_BRE),
830 OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
831 N_("interpret patterns as fixed strings"),
832 GREP_PATTERN_TYPE_FIXED),
833 OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
834 N_("use Perl-compatible regular expressions"),
835 GREP_PATTERN_TYPE_PCRE),
837 OPT_BOOLEAN('n', "line-number", &opt.linenum, N_("show line numbers")),
838 OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
839 OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
840 OPT_NEGBIT(0, "full-name", &opt.relative,
841 N_("show filenames relative to top directory"), 1),
842 OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
843 N_("show only filenames instead of matching lines")),
844 OPT_BOOLEAN(0, "name-only", &opt.name_only,
845 N_("synonym for --files-with-matches")),
846 OPT_BOOLEAN('L', "files-without-match",
847 &opt.unmatch_name_only,
848 N_("show only the names of files without match")),
849 OPT_BOOLEAN('z', "null", &opt.null_following_name,
850 N_("print NUL after filenames")),
851 OPT_BOOLEAN('c', "count", &opt.count,
852 N_("show the number of matches instead of matching lines")),
853 OPT__COLOR(&opt.color, N_("highlight matches")),
854 OPT_BOOLEAN(0, "break", &opt.file_break,
855 N_("print empty line between matches from different files")),
856 OPT_BOOLEAN(0, "heading", &opt.heading,
857 N_("show filename only once above matches from same file")),
859 OPT_CALLBACK('C', "context", &opt, N_("n"),
860 N_("show <n> context lines before and after matches"),
862 OPT_INTEGER('B', "before-context", &opt.pre_context,
863 N_("show <n> context lines before matches")),
864 OPT_INTEGER('A', "after-context", &opt.post_context,
865 N_("show <n> context lines after matches")),
866 OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
868 OPT_BOOLEAN('p', "show-function", &opt.funcname,
869 N_("show a line with the function name before matches")),
870 OPT_BOOLEAN('W', "function-context", &opt.funcbody,
871 N_("show the surrounding function")),
873 OPT_CALLBACK('f', NULL, &opt, N_("file"),
874 N_("read patterns from file"), file_callback),
875 { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
876 N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
877 { OPTION_CALLBACK, 0, "and", &opt, NULL,
878 N_("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 N_("indicate hit with exit status without output")),
891 OPT_BOOLEAN(0, "all-match", &opt.all_match,
892 N_("show only matches from files that match all patterns")),
893 { OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
894 N_("show parse tree for grep expression"),
895 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
897 { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
898 N_("pager"), N_("show matching files in the pager"),
899 PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
900 OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
901 N_("allow calling of grep(1) (ignored by this build)")),
902 { OPTION_CALLBACK, 0, "help-all", &options, NULL, N_("show usage"),
903 PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
908 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
909 * to show usage information and exit.
911 if (argc == 2 && !strcmp(argv[1], "-h"))
912 usage_with_options(grep_usage, options);
914 init_grep_defaults();
915 git_config(grep_cmd_config, NULL);
916 grep_init(&opt, prefix);
919 * If there is no -- then the paths must exist in the working
920 * tree. If there is no explicit pattern specified with -e or
921 * -f, we take the first unrecognized non option to be the
922 * pattern, but then what follows it must be zero or more
923 * valid refs up to the -- (if exists), and then existing
924 * paths. If there is an explicit pattern, then the first
925 * unrecognized non option is the beginning of the refs list
926 * that continues up to the -- (if exists), and then paths.
928 argc = parse_options(argc, argv, prefix, options, grep_usage,
929 PARSE_OPT_KEEP_DASHDASH |
930 PARSE_OPT_STOP_AT_NON_OPTION |
931 PARSE_OPT_NO_INTERNAL_HELP);
933 if (pattern_type_arg != GREP_PATTERN_TYPE_UNSPECIFIED)
934 grep_pattern_type_options(pattern_type_arg, &opt);
935 else if (opt.pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED)
936 grep_pattern_type_options(opt.pattern_type_option, &opt);
937 else if (opt.extended_regexp_option)
938 grep_pattern_type_options(GREP_PATTERN_TYPE_ERE, &opt);
940 if (use_index && !startup_info->have_repository)
941 /* die the same way as if we did it at the beginning */
942 setup_git_directory();
945 * skip a -- separator; we know it cannot be
946 * separating revisions from pathnames if
947 * we haven't even had any patterns yet
949 if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
954 /* First unrecognized non-option token */
955 if (argc > 0 && !opt.pattern_list) {
956 append_grep_pattern(&opt, argv[0], "command line", 0,
962 if (show_in_pager == default_pager)
963 show_in_pager = git_pager(1);
967 opt.null_following_name = 1;
968 opt.output_priv = &path_list;
969 opt.output = append_path;
970 string_list_append(&path_list, show_in_pager);
974 if (!opt.pattern_list)
975 die(_("no pattern given."));
976 if (!opt.fixed && opt.ignore_case)
977 opt.regflags |= REG_ICASE;
979 compile_grep_patterns(&opt);
981 /* Check revs and then paths */
982 for (i = 0; i < argc; i++) {
983 const char *arg = argv[i];
984 unsigned char sha1[20];
986 if (!get_sha1(arg, sha1)) {
987 struct object *object = parse_object(sha1);
989 die(_("bad object %s"), arg);
990 add_object_array(object, arg, &list);
993 if (!strcmp(arg, "--")) {
1001 if (list.nr || cached || online_cpus() == 1)
1009 if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1010 && (opt.pre_context || opt.post_context ||
1011 opt.file_break || opt.funcbody))
1012 skip_first_line = 1;
1013 start_threads(&opt);
1017 /* The rest are paths */
1018 if (!seen_dashdash) {
1020 for (j = i; j < argc; j++)
1021 verify_filename(prefix, argv[j], j == i);
1024 paths = get_pathspec(prefix, argv + i);
1025 init_pathspec(&pathspec, paths);
1026 pathspec.max_depth = opt.max_depth;
1027 pathspec.recursive = 1;
1029 if (show_in_pager && (cached || list.nr))
1030 die(_("--open-files-in-pager only works on the worktree"));
1032 if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
1033 const char *pager = path_list.items[0].string;
1034 int len = strlen(pager);
1036 if (len > 4 && is_dir_sep(pager[len - 5]))
1039 if (!strcmp("less", pager) || !strcmp("vi", pager)) {
1040 struct strbuf buf = STRBUF_INIT;
1041 strbuf_addf(&buf, "+/%s%s",
1042 strcmp("less", pager) ? "" : "*",
1043 opt.pattern_list->pattern);
1044 string_list_append(&path_list, buf.buf);
1045 strbuf_detach(&buf, NULL);
1052 if (!use_index && (untracked || cached))
1053 die(_("--cached or --untracked cannot be used with --no-index."));
1055 if (!use_index || untracked) {
1056 int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
1058 die(_("--no-index or --untracked cannot be used with revs."));
1059 hit = grep_directory(&opt, &pathspec, use_exclude);
1060 } else if (0 <= opt_exclude) {
1061 die(_("--[no-]exclude-standard cannot be used for tracked contents."));
1062 } else if (!list.nr) {
1066 hit = grep_cache(&opt, &pathspec, cached);
1069 die(_("both --cached and trees are given."));
1070 hit = grep_objects(&opt, &pathspec, &list);
1075 if (hit && show_in_pager)
1076 run_pager(&opt, prefix);
1077 free_grep_patterns(&opt);