Example #1
0
File: grep.c Project: Gregg1/git
int cmd_grep(int argc, const char **argv, const char *prefix)
{
	int hit = 0;
	int cached = 0, untracked = 0, opt_exclude = -1;
	int seen_dashdash = 0;
	int external_grep_allowed__ignored;
	const char *show_in_pager = NULL, *default_pager = "dummy";
	struct grep_opt opt;
	struct object_array list = OBJECT_ARRAY_INIT;
	const char **paths = NULL;
	struct pathspec pathspec;
	struct string_list path_list = STRING_LIST_INIT_NODUP;
	int i;
	int dummy;
	int use_index = 1;
	int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;

	struct option options[] = {
		OPT_BOOLEAN(0, "cached", &cached,
			N_("search in index instead of in the work tree")),
		OPT_NEGBIT(0, "no-index", &use_index,
			 N_("find in contents not managed by git"), 1),
		OPT_BOOLEAN(0, "untracked", &untracked,
			N_("search in both tracked and untracked files")),
		OPT_SET_INT(0, "exclude-standard", &opt_exclude,
			    N_("search also in ignored files"), 1),
		OPT_GROUP(""),
		OPT_BOOLEAN('v', "invert-match", &opt.invert,
			N_("show non-matching lines")),
		OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
			N_("case insensitive matching")),
		OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
			N_("match patterns only at word boundaries")),
		OPT_SET_INT('a', "text", &opt.binary,
			N_("process binary files as text"), GREP_BINARY_TEXT),
		OPT_SET_INT('I', NULL, &opt.binary,
			N_("don't match patterns in binary files"),
			GREP_BINARY_NOMATCH),
		{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
			N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
			NULL, 1 },
		OPT_GROUP(""),
		OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
			    N_("use extended POSIX regular expressions"),
			    GREP_PATTERN_TYPE_ERE),
		OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
			    N_("use basic POSIX regular expressions (default)"),
			    GREP_PATTERN_TYPE_BRE),
		OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
			    N_("interpret patterns as fixed strings"),
			    GREP_PATTERN_TYPE_FIXED),
		OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
			    N_("use Perl-compatible regular expressions"),
			    GREP_PATTERN_TYPE_PCRE),
		OPT_GROUP(""),
		OPT_BOOLEAN('n', "line-number", &opt.linenum, N_("show line numbers")),
		OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
		OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
		OPT_NEGBIT(0, "full-name", &opt.relative,
			N_("show filenames relative to top directory"), 1),
		OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
			N_("show only filenames instead of matching lines")),
		OPT_BOOLEAN(0, "name-only", &opt.name_only,
			N_("synonym for --files-with-matches")),
		OPT_BOOLEAN('L', "files-without-match",
			&opt.unmatch_name_only,
			N_("show only the names of files without match")),
		OPT_BOOLEAN('z', "null", &opt.null_following_name,
			N_("print NUL after filenames")),
		OPT_BOOLEAN('c', "count", &opt.count,
			N_("show the number of matches instead of matching lines")),
		OPT__COLOR(&opt.color, N_("highlight matches")),
		OPT_BOOLEAN(0, "break", &opt.file_break,
			N_("print empty line between matches from different files")),
		OPT_BOOLEAN(0, "heading", &opt.heading,
			N_("show filename only once above matches from same file")),
		OPT_GROUP(""),
		OPT_CALLBACK('C', "context", &opt, N_("n"),
			N_("show <n> context lines before and after matches"),
			context_callback),
		OPT_INTEGER('B', "before-context", &opt.pre_context,
			N_("show <n> context lines before matches")),
		OPT_INTEGER('A', "after-context", &opt.post_context,
			N_("show <n> context lines after matches")),
		OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
			context_callback),
		OPT_BOOLEAN('p', "show-function", &opt.funcname,
			N_("show a line with the function name before matches")),
		OPT_BOOLEAN('W', "function-context", &opt.funcbody,
			N_("show the surrounding function")),
		OPT_GROUP(""),
		OPT_CALLBACK('f', NULL, &opt, N_("file"),
			N_("read patterns from file"), file_callback),
		{ OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
			N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
		{ OPTION_CALLBACK, 0, "and", &opt, NULL,
		  N_("combine patterns specified with -e"),
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
		OPT_BOOLEAN(0, "or", &dummy, ""),
		{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
		{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
		  open_callback },
		{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
		  close_callback },
		OPT__QUIET(&opt.status_only,
			   N_("indicate hit with exit status without output")),
		OPT_BOOLEAN(0, "all-match", &opt.all_match,
			N_("show only matches from files that match all patterns")),
		{ OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
		  N_("show parse tree for grep expression"),
		  PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
		OPT_GROUP(""),
		{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
			N_("pager"), N_("show matching files in the pager"),
			PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
		OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
			    N_("allow calling of grep(1) (ignored by this build)")),
		{ OPTION_CALLBACK, 0, "help-all", &options, NULL, N_("show usage"),
		  PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
		OPT_END()
	};

	/*
	 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
	 * to show usage information and exit.
	 */
	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(grep_usage, options);

	init_grep_defaults();
	git_config(grep_cmd_config, NULL);
	grep_init(&opt, prefix);

	/*
	 * If there is no -- then the paths must exist in the working
	 * tree.  If there is no explicit pattern specified with -e or
	 * -f, we take the first unrecognized non option to be the
	 * pattern, but then what follows it must be zero or more
	 * valid refs up to the -- (if exists), and then existing
	 * paths.  If there is an explicit pattern, then the first
	 * unrecognized non option is the beginning of the refs list
	 * that continues up to the -- (if exists), and then paths.
	 */
	argc = parse_options(argc, argv, prefix, options, grep_usage,
			     PARSE_OPT_KEEP_DASHDASH |
			     PARSE_OPT_STOP_AT_NON_OPTION |
			     PARSE_OPT_NO_INTERNAL_HELP);
	grep_commit_pattern_type(pattern_type_arg, &opt);

	if (use_index && !startup_info->have_repository)
		/* die the same way as if we did it at the beginning */
		setup_git_directory();

	/*
	 * skip a -- separator; we know it cannot be
	 * separating revisions from pathnames if
	 * we haven't even had any patterns yet
	 */
	if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
		argv++;
		argc--;
	}

	/* First unrecognized non-option token */
	if (argc > 0 && !opt.pattern_list) {
		append_grep_pattern(&opt, argv[0], "command line", 0,
				    GREP_PATTERN);
		argv++;
		argc--;
	}

	if (show_in_pager == default_pager)
		show_in_pager = git_pager(1);
	if (show_in_pager) {
		opt.color = 0;
		opt.name_only = 1;
		opt.null_following_name = 1;
		opt.output_priv = &path_list;
		opt.output = append_path;
		string_list_append(&path_list, show_in_pager);
		use_threads = 0;
	}
	if ((opt.binary & GREP_BINARY_NOMATCH))
		use_threads = 0;

	if (!opt.pattern_list)
		die(_("no pattern given."));
	if (!opt.fixed && opt.ignore_case)
		opt.regflags |= REG_ICASE;

	compile_grep_patterns(&opt);

	/* Check revs and then paths */
	for (i = 0; i < argc; i++) {
		const char *arg = argv[i];
		unsigned char sha1[20];
		/* Is it a rev? */
		if (!get_sha1(arg, sha1)) {
			struct object *object = parse_object(sha1);
			if (!object)
				die(_("bad object %s"), arg);
			add_object_array(object, arg, &list);
			continue;
		}
		if (!strcmp(arg, "--")) {
			i++;
			seen_dashdash = 1;
		}
		break;
	}

#ifndef NO_PTHREADS
	if (list.nr || cached || online_cpus() == 1)
		use_threads = 0;
#else
	use_threads = 0;
#endif

#ifndef NO_PTHREADS
	if (use_threads) {
		if (!(opt.name_only || opt.unmatch_name_only || opt.count)
		    && (opt.pre_context || opt.post_context ||
			opt.file_break || opt.funcbody))
			skip_first_line = 1;
		start_threads(&opt);
	}
#endif

	/* The rest are paths */
	if (!seen_dashdash) {
		int j;
		for (j = i; j < argc; j++)
			verify_filename(prefix, argv[j], j == i);
	}

	paths = get_pathspec(prefix, argv + i);
	init_pathspec(&pathspec, paths);
	pathspec.max_depth = opt.max_depth;
	pathspec.recursive = 1;

	if (show_in_pager && (cached || list.nr))
		die(_("--open-files-in-pager only works on the worktree"));

	if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
		const char *pager = path_list.items[0].string;
		int len = strlen(pager);

		if (len > 4 && is_dir_sep(pager[len - 5]))
			pager += len - 4;

		if (opt.ignore_case && !strcmp("less", pager))
			string_list_append(&path_list, "-i");

		if (!strcmp("less", pager) || !strcmp("vi", pager)) {
			struct strbuf buf = STRBUF_INIT;
			strbuf_addf(&buf, "+/%s%s",
					strcmp("less", pager) ? "" : "*",
					opt.pattern_list->pattern);
			string_list_append(&path_list, buf.buf);
			strbuf_detach(&buf, NULL);
		}
	}

	if (!show_in_pager)
		setup_pager();

	if (!use_index && (untracked || cached))
		die(_("--cached or --untracked cannot be used with --no-index."));

	if (!use_index || untracked) {
		int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
		if (list.nr)
			die(_("--no-index or --untracked cannot be used with revs."));
		hit = grep_directory(&opt, &pathspec, use_exclude);
	} else if (0 <= opt_exclude) {
		die(_("--[no-]exclude-standard cannot be used for tracked contents."));
	} else if (!list.nr) {
		if (!cached)
			setup_work_tree();

		hit = grep_cache(&opt, &pathspec, cached);
	} else {
		if (cached)
			die(_("both --cached and trees are given."));
		hit = grep_objects(&opt, &pathspec, &list);
	}

	if (use_threads)
		hit |= wait_all();
	if (hit && show_in_pager)
		run_pager(&opt, prefix);
	free_grep_patterns(&opt);
	return !hit;
}
Example #2
0
int cmd_show_branch(int ac, const char **av, const char *prefix)
{
	struct commit *rev[MAX_REVS], *commit;
	char *reflog_msg[MAX_REVS];
	struct commit_list *list = NULL, *seen = NULL;
	unsigned int rev_mask[MAX_REVS];
	int num_rev, i, extra = 0;
	int all_heads = 0, all_remotes = 0;
	int all_mask, all_revs;
	int lifo = 1;
	char head[128];
	const char *head_p;
	int head_len;
	unsigned char head_sha1[20];
	int merge_base = 0;
	int independent = 0;
	int no_name = 0;
	int sha1_name = 0;
	int shown_merge_point = 0;
	int with_current_branch = 0;
	int head_at = -1;
	int topics = 0;
	int dense = 1;
	const char *reflog_base = NULL;
	struct option builtin_show_branch_options[] = {
		OPT_BOOLEAN('a', "all", &all_heads,
			    "show remote-tracking and local branches"),
		OPT_BOOLEAN('r', "remotes", &all_remotes,
			    "show remote-tracking branches"),
		OPT__COLOR(&showbranch_use_color,
			    "color '*!+-' corresponding to the branch"),
		{ OPTION_INTEGER, 0, "more", &extra, "n",
			    "show <n> more commits after the common ancestor",
			    PARSE_OPT_OPTARG, NULL, (intptr_t)1 },
		OPT_SET_INT(0, "list", &extra, "synonym to more=-1", -1),
		OPT_BOOLEAN(0, "no-name", &no_name, "suppress naming strings"),
		OPT_BOOLEAN(0, "current", &with_current_branch,
			    "include the current branch"),
		OPT_BOOLEAN(0, "sha1-name", &sha1_name,
			    "name commits with their object names"),
		OPT_BOOLEAN(0, "merge-base", &merge_base,
			    "show possible merge bases"),
		OPT_BOOLEAN(0, "independent", &independent,
			    "show refs unreachable from any other ref"),
		OPT_BOOLEAN(0, "topo-order", &lifo,
			    "show commits in topological order"),
		OPT_BOOLEAN(0, "topics", &topics,
			    "show only commits not on the first branch"),
		OPT_SET_INT(0, "sparse", &dense,
			    "show merges reachable from only one tip", 0),
		OPT_SET_INT(0, "date-order", &lifo,
			    "show commits where no parent comes before its "
			    "children", 0),
		{ OPTION_CALLBACK, 'g', "reflog", &reflog_base, "<n>[,<base>]",
			    "show <n> most recent ref-log entries starting at "
			    "base",
			    PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP,
			    parse_reflog_param },
		OPT_END()
	};

	git_config(git_show_branch_config, NULL);

	if (showbranch_use_color == -1)
		showbranch_use_color = git_use_color_default;

	/* If nothing is specified, try the default first */
	if (ac == 1 && default_num) {
		ac = default_num;
		av = default_arg;
	}

	ac = parse_options(ac, av, prefix, builtin_show_branch_options,
			   show_branch_usage, PARSE_OPT_STOP_AT_NON_OPTION);
	if (all_heads)
		all_remotes = 1;

	if (extra || reflog) {
		/* "listing" mode is incompatible with
		 * independent nor merge-base modes.
		 */
		if (independent || merge_base)
			usage_with_options(show_branch_usage,
					   builtin_show_branch_options);
		if (reflog && ((0 < extra) || all_heads || all_remotes))
			/*
			 * Asking for --more in reflog mode does not
			 * make sense.  --list is Ok.
			 *
			 * Also --all and --remotes do not make sense either.
			 */
			die("--reflog is incompatible with --all, --remotes, "
			    "--independent or --merge-base");
	}

	/* If nothing is specified, show all branches by default */
	if (ac + all_heads + all_remotes == 0)
		all_heads = 1;

	if (reflog) {
		unsigned char sha1[20];
		char nth_desc[256];
		char *ref;
		int base = 0;

		if (ac == 0) {
			static const char *fake_av[2];
			const char *refname;

			refname = resolve_ref("HEAD", sha1, 1, NULL);
			fake_av[0] = xstrdup(refname);
			fake_av[1] = NULL;
			av = fake_av;
			ac = 1;
		}
		if (ac != 1)
			die("--reflog option needs one branch name");

		if (MAX_REVS < reflog)
			die("Only %d entries can be shown at one time.",
			    MAX_REVS);
		if (!dwim_ref(*av, strlen(*av), sha1, &ref))
			die("No such ref %s", *av);

		/* Has the base been specified? */
		if (reflog_base) {
			char *ep;
			base = strtoul(reflog_base, &ep, 10);
			if (*ep) {
				/* Ah, that is a date spec... */
				unsigned long at;
				at = approxidate(reflog_base);
				read_ref_at(ref, at, -1, sha1, NULL,
					    NULL, NULL, &base);
			}
		}

		for (i = 0; i < reflog; i++) {
			char *logmsg, *m;
			const char *msg;
			unsigned long timestamp;
			int tz;

			if (read_ref_at(ref, 0, base+i, sha1, &logmsg,
					&timestamp, &tz, NULL)) {
				reflog = i;
				break;
			}
			msg = strchr(logmsg, '\t');
			if (!msg)
				msg = "(none)";
			else
				msg++;
			m = xmalloc(strlen(msg) + 200);
			sprintf(m, "(%s) %s",
				show_date(timestamp, tz, 1),
				msg);
			reflog_msg[i] = m;
			free(logmsg);
			sprintf(nth_desc, "%s@{%d}", *av, base+i);
			append_ref(nth_desc, sha1, 1);
		}
	}
	else if (all_heads + all_remotes)
		snarf_refs(all_heads, all_remotes);
	else {
		while (0 < ac) {
			append_one_rev(*av);
			ac--; av++;
		}
	}

	head_p = resolve_ref("HEAD", head_sha1, 1, NULL);
	if (head_p) {
		head_len = strlen(head_p);
		memcpy(head, head_p, head_len + 1);
	}
	else {
		head_len = 0;
		head[0] = 0;
	}

	if (with_current_branch && head_p) {
		int has_head = 0;
		for (i = 0; !has_head && i < ref_name_cnt; i++) {
			/* We are only interested in adding the branch
			 * HEAD points at.
			 */
			if (rev_is_head(head,
					head_len,
					ref_name[i],
					head_sha1, NULL))
				has_head++;
		}
		if (!has_head) {
			int offset = !prefixcmp(head, "refs/heads/") ? 11 : 0;
			append_one_rev(head + offset);
		}
	}

	if (!ref_name_cnt) {
		fprintf(stderr, "No revs to be shown.\n");
		exit(0);
	}

	for (num_rev = 0; ref_name[num_rev]; num_rev++) {
		unsigned char revkey[20];
		unsigned int flag = 1u << (num_rev + REV_SHIFT);

		if (MAX_REVS <= num_rev)
			die("cannot handle more than %d revs.", MAX_REVS);
		if (get_sha1(ref_name[num_rev], revkey))
			die("'%s' is not a valid ref.", ref_name[num_rev]);
		commit = lookup_commit_reference(revkey);
		if (!commit)
			die("cannot find commit %s (%s)",
			    ref_name[num_rev], revkey);
		parse_commit(commit);
		mark_seen(commit, &seen);

		/* rev#0 uses bit REV_SHIFT, rev#1 uses bit REV_SHIFT+1,
		 * and so on.  REV_SHIFT bits from bit 0 are used for
		 * internal bookkeeping.
		 */
		commit->object.flags |= flag;
		if (commit->object.flags == flag)
			commit_list_insert_by_date(commit, &list);
		rev[num_rev] = commit;
	}
	for (i = 0; i < num_rev; i++)
		rev_mask[i] = rev[i]->object.flags;

	if (0 <= extra)
		join_revs(&list, &seen, num_rev, extra);

	commit_list_sort_by_date(&seen);

	if (merge_base)
		return show_merge_base(seen, num_rev);

	if (independent)
		return show_independent(rev, num_rev, ref_name, rev_mask);

	/* Show list; --more=-1 means list-only */
	if (1 < num_rev || extra < 0) {
		for (i = 0; i < num_rev; i++) {
			int j;
			int is_head = rev_is_head(head,
						  head_len,
						  ref_name[i],
						  head_sha1,
						  rev[i]->object.sha1);
			if (extra < 0)
				printf("%c [%s] ",
				       is_head ? '*' : ' ', ref_name[i]);
			else {
				for (j = 0; j < i; j++)
					putchar(' ');
				printf("%s%c%s [%s] ",
				       get_color_code(i % COLUMN_COLORS_MAX),
				       is_head ? '*' : '!',
				       get_color_reset_code(), ref_name[i]);
			}

			if (!reflog) {
				/* header lines never need name */
				show_one_commit(rev[i], 1);
			}
			else
				puts(reflog_msg[i]);

			if (is_head)
				head_at = i;
		}
		if (0 <= extra) {
			for (i = 0; i < num_rev; i++)
				putchar('-');
			putchar('\n');
		}
	}
	if (extra < 0)
		exit(0);

	/* Sort topologically */
	sort_in_topological_order(&seen, lifo);

	/* Give names to commits */
	if (!sha1_name && !no_name)
		name_commits(seen, rev, ref_name, num_rev);

	all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
	all_revs = all_mask & ~((1u << REV_SHIFT) - 1);

	while (seen) {
		struct commit *commit = pop_one_commit(&seen);
		int this_flag = commit->object.flags;
		int is_merge_point = ((this_flag & all_revs) == all_revs);

		shown_merge_point |= is_merge_point;

		if (1 < num_rev) {
			int is_merge = !!(commit->parents &&
					  commit->parents->next);
			if (topics &&
			    !is_merge_point &&
			    (this_flag & (1u << REV_SHIFT)))
				continue;
			if (dense && is_merge &&
			    omit_in_dense(commit, rev, num_rev))
				continue;
			for (i = 0; i < num_rev; i++) {
				int mark;
				if (!(this_flag & (1u << (i + REV_SHIFT))))
					mark = ' ';
				else if (is_merge)
					mark = '-';
				else if (i == head_at)
					mark = '*';
				else
					mark = '+';
				printf("%s%c%s",
				       get_color_code(i % COLUMN_COLORS_MAX),
				       mark, get_color_reset_code());
			}
			putchar(' ');
		}
		show_one_commit(commit, no_name);

		if (shown_merge_point && --extra < 0)
			break;
	}
	return 0;
}
Example #3
0
int cmd_grep(int argc, const char **argv, const char *prefix)
{
	int hit = 0;
	int cached = 0, untracked = 0, opt_exclude = -1;
	int seen_dashdash = 0;
	int external_grep_allowed__ignored;
	const char *show_in_pager = NULL, *default_pager = "dummy";
	struct grep_opt opt;
	struct object_array list = OBJECT_ARRAY_INIT;
	struct pathspec pathspec;
	struct string_list path_list = STRING_LIST_INIT_NODUP;
	int i;
	int dummy;
	int use_index = 1;
	int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
	int allow_revs;

	struct option options[] = {
		OPT_BOOL(0, "cached", &cached,
			N_("search in index instead of in the work tree")),
		OPT_NEGBIT(0, "no-index", &use_index,
			 N_("find in contents not managed by git"), 1),
		OPT_BOOL(0, "untracked", &untracked,
			N_("search in both tracked and untracked files")),
		OPT_SET_INT(0, "exclude-standard", &opt_exclude,
			    N_("ignore files specified via '.gitignore'"), 1),
		OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
			 N_("recursively search in each submodule")),
		OPT_GROUP(""),
		OPT_BOOL('v', "invert-match", &opt.invert,
			N_("show non-matching lines")),
		OPT_BOOL('i', "ignore-case", &opt.ignore_case,
			N_("case insensitive matching")),
		OPT_BOOL('w', "word-regexp", &opt.word_regexp,
			N_("match patterns only at word boundaries")),
		OPT_SET_INT('a', "text", &opt.binary,
			N_("process binary files as text"), GREP_BINARY_TEXT),
		OPT_SET_INT('I', NULL, &opt.binary,
			N_("don't match patterns in binary files"),
			GREP_BINARY_NOMATCH),
		OPT_BOOL(0, "textconv", &opt.allow_textconv,
			 N_("process binary files with textconv filters")),
		{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
			N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
			NULL, 1 },
		OPT_GROUP(""),
		OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
			    N_("use extended POSIX regular expressions"),
			    GREP_PATTERN_TYPE_ERE),
		OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
			    N_("use basic POSIX regular expressions (default)"),
			    GREP_PATTERN_TYPE_BRE),
		OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
			    N_("interpret patterns as fixed strings"),
			    GREP_PATTERN_TYPE_FIXED),
		OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
			    N_("use Perl-compatible regular expressions"),
			    GREP_PATTERN_TYPE_PCRE),
		OPT_GROUP(""),
		OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
		OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
		OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
		OPT_NEGBIT(0, "full-name", &opt.relative,
			N_("show filenames relative to top directory"), 1),
		OPT_BOOL('l', "files-with-matches", &opt.name_only,
			N_("show only filenames instead of matching lines")),
		OPT_BOOL(0, "name-only", &opt.name_only,
			N_("synonym for --files-with-matches")),
		OPT_BOOL('L', "files-without-match",
			&opt.unmatch_name_only,
			N_("show only the names of files without match")),
		OPT_BOOL('z', "null", &opt.null_following_name,
			N_("print NUL after filenames")),
		OPT_BOOL('c', "count", &opt.count,
			N_("show the number of matches instead of matching lines")),
		OPT__COLOR(&opt.color, N_("highlight matches")),
		OPT_BOOL(0, "break", &opt.file_break,
			N_("print empty line between matches from different files")),
		OPT_BOOL(0, "heading", &opt.heading,
			N_("show filename only once above matches from same file")),
		OPT_GROUP(""),
		OPT_CALLBACK('C', "context", &opt, N_("n"),
			N_("show <n> context lines before and after matches"),
			context_callback),
		OPT_INTEGER('B', "before-context", &opt.pre_context,
			N_("show <n> context lines before matches")),
		OPT_INTEGER('A', "after-context", &opt.post_context,
			N_("show <n> context lines after matches")),
		OPT_INTEGER(0, "threads", &num_threads,
			N_("use <n> worker threads")),
		OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
			context_callback),
		OPT_BOOL('p', "show-function", &opt.funcname,
			N_("show a line with the function name before matches")),
		OPT_BOOL('W', "function-context", &opt.funcbody,
			N_("show the surrounding function")),
		OPT_GROUP(""),
		OPT_CALLBACK('f', NULL, &opt, N_("file"),
			N_("read patterns from file"), file_callback),
		{ OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
			N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
		{ OPTION_CALLBACK, 0, "and", &opt, NULL,
		  N_("combine patterns specified with -e"),
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
		OPT_BOOL(0, "or", &dummy, ""),
		{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
		{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
		  open_callback },
		{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
		  close_callback },
		OPT__QUIET(&opt.status_only,
			   N_("indicate hit with exit status without output")),
		OPT_BOOL(0, "all-match", &opt.all_match,
			N_("show only matches from files that match all patterns")),
		{ OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
		  N_("show parse tree for grep expression"),
		  PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
		OPT_GROUP(""),
		{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
			N_("pager"), N_("show matching files in the pager"),
			PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
		OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
			 N_("allow calling of grep(1) (ignored by this build)")),
		OPT_END()
	};

	init_grep_defaults();
	git_config(grep_cmd_config, NULL);
	grep_init(&opt, prefix);

	/*
	 * If there is no -- then the paths must exist in the working
	 * tree.  If there is no explicit pattern specified with -e or
	 * -f, we take the first unrecognized non option to be the
	 * pattern, but then what follows it must be zero or more
	 * valid refs up to the -- (if exists), and then existing
	 * paths.  If there is an explicit pattern, then the first
	 * unrecognized non option is the beginning of the refs list
	 * that continues up to the -- (if exists), and then paths.
	 */
	argc = parse_options(argc, argv, prefix, options, grep_usage,
			     PARSE_OPT_KEEP_DASHDASH |
			     PARSE_OPT_STOP_AT_NON_OPTION);
	grep_commit_pattern_type(pattern_type_arg, &opt);

	if (use_index && !startup_info->have_repository) {
		int fallback = 0;
		git_config_get_bool("grep.fallbacktonoindex", &fallback);
		if (fallback)
			use_index = 0;
		else
			/* die the same way as if we did it at the beginning */
			setup_git_directory();
	}

	/*
	 * skip a -- separator; we know it cannot be
	 * separating revisions from pathnames if
	 * we haven't even had any patterns yet
	 */
	if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
		argv++;
		argc--;
	}

	/* First unrecognized non-option token */
	if (argc > 0 && !opt.pattern_list) {
		append_grep_pattern(&opt, argv[0], "command line", 0,
				    GREP_PATTERN);
		argv++;
		argc--;
	}

	if (show_in_pager == default_pager)
		show_in_pager = git_pager(1);
	if (show_in_pager) {
		opt.color = 0;
		opt.name_only = 1;
		opt.null_following_name = 1;
		opt.output_priv = &path_list;
		opt.output = append_path;
		string_list_append(&path_list, show_in_pager);
	}

	if (!opt.pattern_list)
		die(_("no pattern given."));

	/*
	 * We have to find "--" in a separate pass, because its presence
	 * influences how we will parse arguments that come before it.
	 */
	for (i = 0; i < argc; i++) {
		if (!strcmp(argv[i], "--")) {
			seen_dashdash = 1;
			break;
		}
	}

	/*
	 * Resolve any rev arguments. If we have a dashdash, then everything up
	 * to it must resolve as a rev. If not, then we stop at the first
	 * non-rev and assume everything else is a path.
	 */
	allow_revs = use_index && !untracked;
	for (i = 0; i < argc; i++) {
		const char *arg = argv[i];
		struct object_id oid;
		struct object_context oc;
		struct object *object;

		if (!strcmp(arg, "--")) {
			i++;
			break;
		}

		if (!allow_revs) {
			if (seen_dashdash)
				die(_("--no-index or --untracked cannot be used with revs"));
			break;
		}

		if (get_oid_with_context(arg, GET_OID_RECORD_PATH,
					 &oid, &oc)) {
			if (seen_dashdash)
				die(_("unable to resolve revision: %s"), arg);
			break;
		}

		object = parse_object_or_die(&oid, arg);
		if (!seen_dashdash)
			verify_non_filename(prefix, arg);
		add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
		free(oc.path);
	}

	/*
	 * Anything left over is presumed to be a path. But in the non-dashdash
	 * "do what I mean" case, we verify and complain when that isn't true.
	 */
	if (!seen_dashdash) {
		int j;
		for (j = i; j < argc; j++)
			verify_filename(prefix, argv[j], j == i && allow_revs);
	}

	parse_pathspec(&pathspec, 0,
		       PATHSPEC_PREFER_CWD |
		       (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
		       prefix, argv + i);
	pathspec.max_depth = opt.max_depth;
	pathspec.recursive = 1;
	pathspec.recurse_submodules = !!recurse_submodules;

#ifndef NO_PTHREADS
	if (list.nr || cached || show_in_pager)
		num_threads = 0;
	else if (num_threads == 0)
		num_threads = GREP_NUM_THREADS_DEFAULT;
	else if (num_threads < 0)
		die(_("invalid number of threads specified (%d)"), num_threads);
	if (num_threads == 1)
		num_threads = 0;
#else
	if (num_threads)
		warning(_("no threads support, ignoring --threads"));
	num_threads = 0;
#endif

	if (!num_threads)
		/*
		 * The compiled patterns on the main path are only
		 * used when not using threading. Otherwise
		 * start_threads() below calls compile_grep_patterns()
		 * for each thread.
		 */
		compile_grep_patterns(&opt);

#ifndef NO_PTHREADS
	if (num_threads) {
		if (!(opt.name_only || opt.unmatch_name_only || opt.count)
		    && (opt.pre_context || opt.post_context ||
			opt.file_break || opt.funcbody))
			skip_first_line = 1;
		start_threads(&opt);
	}
#endif

	if (show_in_pager && (cached || list.nr))
		die(_("--open-files-in-pager only works on the worktree"));

	if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
		const char *pager = path_list.items[0].string;
		int len = strlen(pager);

		if (len > 4 && is_dir_sep(pager[len - 5]))
			pager += len - 4;

		if (opt.ignore_case && !strcmp("less", pager))
			string_list_append(&path_list, "-I");

		if (!strcmp("less", pager) || !strcmp("vi", pager)) {
			struct strbuf buf = STRBUF_INIT;
			strbuf_addf(&buf, "+/%s%s",
					strcmp("less", pager) ? "" : "*",
					opt.pattern_list->pattern);
			string_list_append(&path_list, buf.buf);
			strbuf_detach(&buf, NULL);
		}
	}

	if (recurse_submodules && (!use_index || untracked))
		die(_("option not supported with --recurse-submodules."));

	if (!show_in_pager && !opt.status_only)
		setup_pager();

	if (!use_index && (untracked || cached))
		die(_("--cached or --untracked cannot be used with --no-index."));

	if (!use_index || untracked) {
		int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
		hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
	} else if (0 <= opt_exclude) {
		die(_("--[no-]exclude-standard cannot be used for tracked contents."));
	} else if (!list.nr) {
		if (!cached)
			setup_work_tree();

		hit = grep_cache(&opt, the_repository, &pathspec, cached);
	} else {
		if (cached)
			die(_("both --cached and trees are given."));

		hit = grep_objects(&opt, &pathspec, the_repository, &list);
	}

	if (num_threads)
		hit |= wait_all();
	if (hit && show_in_pager)
		run_pager(&opt, prefix);
	clear_pathspec(&pathspec);
	free_grep_patterns(&opt);
	return !hit;
}
Example #4
0
	enum branch_track track;
	int kinds = REF_LOCAL_BRANCH;
	struct commit_list *with_commit = NULL;

	struct option options[] = {
		OPT_GROUP(N_("Generic options")),
		OPT__VERBOSE(&verbose,
			N_("show hash and subject, give twice for upstream branch")),
		OPT__QUIET(&quiet, N_("suppress informational messages")),
		OPT_SET_INT('t', "track",  &track, N_("set up tracking mode (see git-pull(1))"),
			BRANCH_TRACK_EXPLICIT),
		OPT_SET_INT( 0, "set-upstream",  &track, N_("change upstream info"),
			BRANCH_TRACK_OVERRIDE),
		OPT_STRING('u', "set-upstream-to", &new_upstream, "upstream", "change the upstream info"),
		OPT_BOOL(0, "unset-upstream", &unset_upstream, "Unset the upstream info"),
		OPT__COLOR(&branch_use_color, N_("use colored output")),
		OPT_SET_INT('r', "remotes",     &kinds, N_("act on remote-tracking branches"),
			REF_REMOTE_BRANCH),
		{
			OPTION_CALLBACK, 0, "contains", &with_commit, N_("commit"),
			N_("print only branches that contain the commit"),
			PARSE_OPT_LASTARG_DEFAULT,
			parse_opt_with_commit, (intptr_t)"HEAD",
		},
		{
			OPTION_CALLBACK, 0, "with", &with_commit, N_("commit"),
			N_("print only branches that contain the commit"),
			PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
			parse_opt_with_commit, (intptr_t) "HEAD",
		},
		OPT__ABBREV(&abbrev),
Example #5
0
int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
{
	int i;
	struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;
	int maxcount = 0, icase = 0;
	struct ref_array array;
	struct ref_filter filter;
	struct ref_format format = REF_FORMAT_INIT;

	struct option opts[] = {
		OPT_BIT('s', "shell", &format.quote_style,
			N_("quote placeholders suitably for shells"), QUOTE_SHELL),
		OPT_BIT('p', "perl",  &format.quote_style,
			N_("quote placeholders suitably for perl"), QUOTE_PERL),
		OPT_BIT(0 , "python", &format.quote_style,
			N_("quote placeholders suitably for python"), QUOTE_PYTHON),
		OPT_BIT(0 , "tcl",  &format.quote_style,
			N_("quote placeholders suitably for Tcl"), QUOTE_TCL),

		OPT_GROUP(""),
		OPT_INTEGER( 0 , "count", &maxcount, N_("show only <n> matched refs")),
		OPT_STRING(  0 , "format", &format.format, N_("format"), N_("format to use for the output")),
		OPT__COLOR(&format.use_color, N_("respect format colors")),
		OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
			    N_("field name to sort on"), &parse_opt_ref_sorting),
		OPT_CALLBACK(0, "points-at", &filter.points_at,
			     N_("object"), N_("print only refs which points at the given object"),
			     parse_opt_object_name),
		OPT_MERGED(&filter, N_("print only refs that are merged")),
		OPT_NO_MERGED(&filter, N_("print only refs that are not merged")),
		OPT_CONTAINS(&filter.with_commit, N_("print only refs which contain the commit")),
		OPT_NO_CONTAINS(&filter.no_commit, N_("print only refs which don't contain the commit")),
		OPT_BOOL(0, "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
		OPT_END(),
	};

	memset(&array, 0, sizeof(array));
	memset(&filter, 0, sizeof(filter));

	format.format = "%(objectname) %(objecttype)\t%(refname)";

	git_config(git_default_config, NULL);

	parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
	if (maxcount < 0) {
		error("invalid --count argument: `%d'", maxcount);
		usage_with_options(for_each_ref_usage, opts);
	}
	if (HAS_MULTI_BITS(format.quote_style)) {
		error("more than one quoting style?");
		usage_with_options(for_each_ref_usage, opts);
	}
	if (verify_ref_format(&format))
		usage_with_options(for_each_ref_usage, opts);

	if (!sorting)
		sorting = ref_default_sorting();
	sorting->ignore_case = icase;
	filter.ignore_case = icase;

	filter.name_patterns = argv;
	filter.match_as_path = 1;
	filter_refs(&array, &filter, FILTER_REFS_ALL | FILTER_REFS_INCLUDE_BROKEN);
	ref_array_sort(sorting, &array);

	if (!maxcount || array.nr < maxcount)
		maxcount = array.nr;
	for (i = 0; i < maxcount; i++)
		show_ref_array_item(array.items[i], &format);
	ref_array_clear(&array);
	return 0;
}
Example #6
0
File: grep.c Project: adityalnx/git
int cmd_grep(int argc, const char **argv, const char *prefix)
{
	int hit = 0;
	int cached = 0;
	int seen_dashdash = 0;
	int external_grep_allowed__ignored;
	const char *show_in_pager = NULL, *default_pager = "dummy";
	struct grep_opt opt;
	struct object_array list = OBJECT_ARRAY_INIT;
	const char **paths = NULL;
	struct string_list path_list = STRING_LIST_INIT_NODUP;
	int i;
	int dummy;
	int use_index = 1;
	struct option options[] = {
		OPT_BOOLEAN(0, "cached", &cached,
			"search in index instead of in the work tree"),
		OPT_BOOLEAN(0, "index", &use_index,
			"--no-index finds in contents not managed by git"),
		OPT_GROUP(""),
		OPT_BOOLEAN('v', "invert-match", &opt.invert,
			"show non-matching lines"),
		OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
			"case insensitive matching"),
		OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
			"match patterns only at word boundaries"),
		OPT_SET_INT('a', "text", &opt.binary,
			"process binary files as text", GREP_BINARY_TEXT),
		OPT_SET_INT('I', NULL, &opt.binary,
			"don't match patterns in binary files",
			GREP_BINARY_NOMATCH),
		{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, "depth",
			"descend at most <depth> levels", PARSE_OPT_NONEG,
			NULL, 1 },
		OPT_GROUP(""),
		OPT_BIT('E', "extended-regexp", &opt.regflags,
			"use extended POSIX regular expressions", REG_EXTENDED),
		OPT_NEGBIT('G', "basic-regexp", &opt.regflags,
			"use basic POSIX regular expressions (default)",
			REG_EXTENDED),
		OPT_BOOLEAN('F', "fixed-strings", &opt.fixed,
			"interpret patterns as fixed strings"),
		OPT_GROUP(""),
		OPT_BOOLEAN('n', NULL, &opt.linenum, "show line numbers"),
		OPT_NEGBIT('h', NULL, &opt.pathname, "don't show filenames", 1),
		OPT_BIT('H', NULL, &opt.pathname, "show filenames", 1),
		OPT_NEGBIT(0, "full-name", &opt.relative,
			"show filenames relative to top directory", 1),
		OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
			"show only filenames instead of matching lines"),
		OPT_BOOLEAN(0, "name-only", &opt.name_only,
			"synonym for --files-with-matches"),
		OPT_BOOLEAN('L', "files-without-match",
			&opt.unmatch_name_only,
			"show only the names of files without match"),
		OPT_BOOLEAN('z', "null", &opt.null_following_name,
			"print NUL after filenames"),
		OPT_BOOLEAN('c', "count", &opt.count,
			"show the number of matches instead of matching lines"),
		OPT__COLOR(&opt.color, "highlight matches"),
		OPT_GROUP(""),
		OPT_CALLBACK('C', NULL, &opt, "n",
			"show <n> context lines before and after matches",
			context_callback),
		OPT_INTEGER('B', NULL, &opt.pre_context,
			"show <n> context lines before matches"),
		OPT_INTEGER('A', NULL, &opt.post_context,
			"show <n> context lines after matches"),
		OPT_NUMBER_CALLBACK(&opt, "shortcut for -C NUM",
			context_callback),
		OPT_BOOLEAN('p', "show-function", &opt.funcname,
			"show a line with the function name before matches"),
		OPT_GROUP(""),
		OPT_CALLBACK('f', NULL, &opt, "file",
			"read patterns from file", file_callback),
		{ OPTION_CALLBACK, 'e', NULL, &opt, "pattern",
			"match <pattern>", PARSE_OPT_NONEG, pattern_callback },
		{ OPTION_CALLBACK, 0, "and", &opt, NULL,
		  "combine patterns specified with -e",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
		OPT_BOOLEAN(0, "or", &dummy, ""),
		{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
		{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
		  open_callback },
		{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
		  close_callback },
		OPT_BOOLEAN('q', "quiet", &opt.status_only,
			    "indicate hit with exit status without output"),
		OPT_BOOLEAN(0, "all-match", &opt.all_match,
			"show only matches from files that match all patterns"),
		OPT_GROUP(""),
		{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
			"pager", "show matching files in the pager",
			PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
		OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
			    "allow calling of grep(1) (ignored by this build)"),
		{ OPTION_CALLBACK, 0, "help-all", &options, NULL, "show usage",
		  PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
		OPT_END()
	};

	/*
	 * 'git grep -h', unlike 'git grep -h <pattern>', is a request
	 * to show usage information and exit.
	 */
	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(grep_usage, options);

	memset(&opt, 0, sizeof(opt));
	opt.prefix = prefix;
	opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
	opt.relative = 1;
	opt.pathname = 1;
	opt.pattern_tail = &opt.pattern_list;
	opt.header_tail = &opt.header_list;
	opt.regflags = REG_NEWLINE;
	opt.max_depth = -1;

	strcpy(opt.color_context, "");
	strcpy(opt.color_filename, "");
	strcpy(opt.color_function, "");
	strcpy(opt.color_lineno, "");
	strcpy(opt.color_match, GIT_COLOR_BOLD_RED);
	strcpy(opt.color_selected, "");
	strcpy(opt.color_sep, GIT_COLOR_CYAN);
	opt.color = -1;
	git_config(grep_config, &opt);
	if (opt.color == -1)
		opt.color = git_use_color_default;

	/*
	 * If there is no -- then the paths must exist in the working
	 * tree.  If there is no explicit pattern specified with -e or
	 * -f, we take the first unrecognized non option to be the
	 * pattern, but then what follows it must be zero or more
	 * valid refs up to the -- (if exists), and then existing
	 * paths.  If there is an explicit pattern, then the first
	 * unrecognized non option is the beginning of the refs list
	 * that continues up to the -- (if exists), and then paths.
	 */
	argc = parse_options(argc, argv, prefix, options, grep_usage,
			     PARSE_OPT_KEEP_DASHDASH |
			     PARSE_OPT_STOP_AT_NON_OPTION |
			     PARSE_OPT_NO_INTERNAL_HELP);

	if (use_index && !startup_info->have_repository)
		/* die the same way as if we did it at the beginning */
		setup_git_directory();

	/*
	 * skip a -- separator; we know it cannot be
	 * separating revisions from pathnames if
	 * we haven't even had any patterns yet
	 */
	if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
		argv++;
		argc--;
	}

	/* First unrecognized non-option token */
	if (argc > 0 && !opt.pattern_list) {
		append_grep_pattern(&opt, argv[0], "command line", 0,
				    GREP_PATTERN);
		argv++;
		argc--;
	}

	if (show_in_pager == default_pager)
		show_in_pager = git_pager(1);
	if (show_in_pager) {
		opt.color = 0;
		opt.name_only = 1;
		opt.null_following_name = 1;
		opt.output_priv = &path_list;
		opt.output = append_path;
		string_list_append(&path_list, show_in_pager);
		use_threads = 0;
	}

	if (!opt.pattern_list)
		die("no pattern given.");
	if (!opt.fixed && opt.ignore_case)
		opt.regflags |= REG_ICASE;
	if ((opt.regflags != REG_NEWLINE) && opt.fixed)
		die("cannot mix --fixed-strings and regexp");

#ifndef NO_PTHREADS
	if (online_cpus() == 1 || !grep_threads_ok(&opt))
		use_threads = 0;

	if (use_threads) {
		if (opt.pre_context || opt.post_context)
			print_hunk_marks_between_files = 1;
		start_threads(&opt);
	}
#else
	use_threads = 0;
#endif

	compile_grep_patterns(&opt);

	/* Check revs and then paths */
	for (i = 0; i < argc; i++) {
		const char *arg = argv[i];
		unsigned char sha1[20];
		/* Is it a rev? */
		if (!get_sha1(arg, sha1)) {
			struct object *object = parse_object(sha1);
			if (!object)
				die("bad object %s", arg);
			add_object_array(object, arg, &list);
			continue;
		}
		if (!strcmp(arg, "--")) {
			i++;
			seen_dashdash = 1;
		}
		break;
	}

	/* The rest are paths */
	if (!seen_dashdash) {
		int j;
		for (j = i; j < argc; j++)
			verify_filename(prefix, argv[j]);
	}

	if (i < argc)
		paths = get_pathspec(prefix, argv + i);
	else if (prefix) {
		paths = xcalloc(2, sizeof(const char *));
		paths[0] = prefix;
		paths[1] = NULL;
	}

	if (show_in_pager && (cached || list.nr))
		die("--open-files-in-pager only works on the worktree");

	if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
		const char *pager = path_list.items[0].string;
		int len = strlen(pager);

		if (len > 4 && is_dir_sep(pager[len - 5]))
			pager += len - 4;

		if (!strcmp("less", pager) || !strcmp("vi", pager)) {
			struct strbuf buf = STRBUF_INIT;
			strbuf_addf(&buf, "+/%s%s",
					strcmp("less", pager) ? "" : "*",
					opt.pattern_list->pattern);
			string_list_append(&path_list, buf.buf);
			strbuf_detach(&buf, NULL);
		}
	}

	if (!show_in_pager)
		setup_pager();


	if (!use_index) {
		if (cached)
			die("--cached cannot be used with --no-index.");
		if (list.nr)
			die("--no-index cannot be used with revs.");
		hit = grep_directory(&opt, paths);
	} else if (!list.nr) {
		if (!cached)
			setup_work_tree();

		hit = grep_cache(&opt, paths, cached);
	} else {
		if (cached)
			die("both --cached and trees are given.");
		hit = grep_objects(&opt, paths, &list);
	}

	if (use_threads)
		hit |= wait_all();
	if (hit && show_in_pager)
		run_pager(&opt, prefix);
	free_grep_patterns(&opt);
	return !hit;
}