コード例 #1
0
ファイル: grep.c プロジェクト: SuguruTakahashi/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;
	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;
}
コード例 #2
0
ファイル: grep.c プロジェクト: 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;
}
コード例 #3
0
ファイル: grep.c プロジェクト: 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;
}