Ejemplo n.º 1
0
int
main(int argc, char **argv)
{
	const char *av = NULL;
	int func_total, file_total;
        char arg_dbpath[MAXPATHLEN];
	const char *index = NULL;
	int optchar;
        int option_index = 0;
	STATISTICS_TIME *tim;

	arg_dbpath[0] = 0;
	basic_check();
	/*
	 * Setup GTAGSCONF and GTAGSLABEL environment variable
	 * according to the --gtagsconf and --gtagslabel option.
	 */
	preparse_options(argc, argv);
	/*
	 * Load configuration values.
	 */
	if (!vgetcwd(cwdpath, sizeof(cwdpath)))
		die("cannot get current directory.");
	openconf(cwdpath);
	configuration();
	/*
	 * setup_langmap() is needed to use decide_lang().
	 */
	setup_langmap(langmap);
	save_environment(argc, argv);
	/*
	 * insert htags_options at the head of argv.
	 */
	setenv_from_config();
	{
		char *env = getenv("HTAGS_OPTIONS");
		if (env && *env)
			argv = prepend_options(&argc, argv, env);
	}
	while ((optchar = getopt_long(argc, argv, "acd:DfFghIm:nNoqst:Tvwx", long_options, &option_index)) != EOF) {
		switch (optchar) {
		case 0:
			/* already flags set */
			break;
		case OPT_AUTO_COMPLETION:
			auto_completion = 1;
			if (optarg) {
				if (atoi(optarg) > 0)
					auto_completion_limit = optarg;
				else
					die("The option value of --auto-completion must be numeric.");
			}
			break;
		case OPT_CFLOW:
			call_file = optarg;
			break;
		case OPT_CALL_TREE:
			call_file = optarg;
			break;
		case OPT_CALLEE_TREE:
			callee_file = optarg;
			break;
		case OPT_CVSWEB:
			cvsweb_url = optarg;
			break;
		case OPT_CVSWEB_CVSROOT:
			cvsweb_cvsroot = optarg;
			break;
		case OPT_GTAGSCONF:
		case OPT_GTAGSLABEL:
			/* These options are already parsed in preparse_options() */
			break;
		case OPT_INSERT_FOOTER:
			insert_footer = optarg;
			break;
		case OPT_INSERT_HEADER:
			insert_header = optarg;
			break;
		case OPT_HTML_HEADER:
			{
				STATIC_STRBUF(sb);
				if (!test("r", optarg))
					die("file '%s' not found.", optarg);
				strbuf_clear(sb);
				loadfile(optarg, sb);
				html_header = strbuf_value(sb);
			}
			break;
		case OPT_ITEM_ORDER:
			item_order = optarg;
			break;
		case OPT_TABS:
			if (atoi(optarg) > 0)
				tabs = atoi(optarg);
			else
				die("--tabs option requires numeric value.");
                        break;
		case OPT_NCOL:
			if (atoi(optarg) > 0)
				ncol = atoi(optarg);
			else
				die("--ncol option requires numeric value.");
                        break;
		case OPT_TREE_VIEW:
			tree_view = 1;
			if (optarg)
				tree_view_type = optarg;
			break;
                case 'a':
                        aflag++;
                        break;
                case 'd':
			strlimcpy(arg_dbpath, optarg, sizeof(arg_dbpath));
                        break;
                case 'D':
			dynamic = 1;
                        break;
                case 'f':
                        fflag++;
                        break;
                case 'F':
                        Fflag++;
                        break;
                case 'g':
                        gflag++;
                        break;
                case 'h':
			definition_header = AFTER_HEADER;
			if (optarg) {
				if (!strcmp(optarg, "before"))
					definition_header = BEFORE_HEADER;
				else if (!strcmp(optarg, "right"))
					definition_header = RIGHT_HEADER;
				else if (!strcmp(optarg, "after"))
					definition_header = AFTER_HEADER;
				else
					die("The option value of --func-header must be one of 'before', 'right' and 'after'.");
			}
                        break;
                case 'I':
                        Iflag++;
                        break;
                case 'm':
			main_func = optarg;
                        break;
                case 'n':
                        nflag++;
			if (optarg) {
				if (atoi(optarg) > 0)
					ncol = atoi(optarg);
				else
					die("The option value of --line-number must be numeric.");
			}
                        break;
                case 'o':
			other_files = 1;
                        break;
                case 's':
			symbol = 1;
                        break;
                case 'T':
			table_flist = 1;
			if (optarg) {
				if (atoi(optarg) > 0)
					flist_fields = atoi(optarg);
				else
					die("The option value of the --table-flist must be numeric.");
			}
                        break;
                case 't':
			title = optarg;
                        break;
                case 'q':
                        qflag++;
			setquiet();
                        break;
                case 'v':
                        vflag++;
			setverbose();
                        break;
                case 'w':
                        wflag++;
                        break;
                default:
                        usage();
                        break;
		}
	}
	/*
	 * Leaving everything to htags.
	 * Htags selects popular options for you.
	 */
	if (suggest2)
		suggest = 1;
	if (suggest) {
		int gtags_not_found = 0;
		char dbpath[MAXPATHLEN];

		aflag = Iflag = nflag = vflag = 1;
		setverbose();
		definition_header = AFTER_HEADER;
		other_files = symbol = show_position = table_flist = fixed_guide = 1;
		if (arg_dbpath[0]) {
			if (!test("f", makepath(arg_dbpath, dbname(GTAGS), NULL)))
				gtags_not_found = 1;
		} else if (gtagsexist(".", dbpath, sizeof(dbpath), 0) == 0) {
			gtags_not_found = 1;
		}
		if (gtags_not_found)
			gflag = 1;
	}
	if (suggest2) {
		Fflag = 1;				/* uses frame */
		fflag = dynamic = 1;			/* needs a HTTP server */
		auto_completion = tree_view = 1;	/* needs javascript */
	}
	if (call_file && !test("fr", call_file))
		die("cflow file not found. '%s'", call_file);
	if (callee_file && !test("fr", callee_file))
		die("cflow file not found. '%s'", callee_file);
	if (insert_header && !test("fr", insert_header))
		die("page header file '%s' not found.", insert_header);
	if (insert_footer && !test("fr", insert_footer))
		die("page footer file '%s' not found.", insert_footer);
	if (!fflag)
		auto_completion = 0;
        argc -= optind;
        argv += optind;
        if (!av)
                av = (argc > 0) ? *argv : NULL;

	if (debug)
		setdebug();
	settabs(tabs);					/* setup tab skip */
        if (qflag) {
                setquiet();
		vflag = 0;
	}
        if (show_version)
                version(av, vflag);
        if (show_help)
                help();
	/*
	 * Invokes gtags beforehand.
	 */
	if (gflag) {
		STRBUF *sb = strbuf_open(0);

		strbuf_puts(sb, gtags_path);
		if (vflag)
			strbuf_puts(sb, " -v");
		if (wflag)
			strbuf_puts(sb, " -w");
		if (suggest2 && enable_idutils && usable("mkid"))
			strbuf_puts(sb, " -I");
		if (arg_dbpath[0]) {
			strbuf_putc(sb, ' ');
			strbuf_puts(sb, arg_dbpath);
		}
		if (system(strbuf_value(sb)))
			die("cannot execute gtags(1) command.");
		strbuf_close(sb);
	}
	/*
	 * get dbpath.
	 */
	if (arg_dbpath[0]) {
		strlimcpy(dbpath, arg_dbpath, sizeof(dbpath));
	} else {
		int status = setupdbpath(0);
		if (status < 0)
			die_with_code(-status, "%s", gtags_dbpath_error);
		strlimcpy(dbpath, get_dbpath(), sizeof(dbpath));
	}
	if (!title) {
		char *p = strrchr(cwdpath, sep);
		title = p ? p + 1 : cwdpath;
	}
	if (cvsweb_url && test("d", "CVS"))
		use_cvs_module = 1;
	/*
	 * decide directory in which we make hypertext.
	 */
	if (av) {
		char realpath[MAXPATHLEN];

		if (!test("dw", av))
			die("'%s' is not writable directory.", av);
		if (chdir(av) < 0)
			die("directory '%s' not found.", av);
		if (!vgetcwd(realpath, sizeof(realpath)))
			die("cannot get current directory");
		if (chdir(cwdpath) < 0)
			die("cannot return to original directory.");
		snprintf(distpath, sizeof(distpath), "%s/HTML", realpath);
	} else {
		snprintf(distpath, sizeof(distpath), "%s/HTML", cwdpath);
	}
	/*
	 * Existence check of tag files.
	 */
	{
		int i;
		const char *path;
		GTOP *gtop;

		for (i = GPATH; i < GTAGLIM; i++) {
			path = makepath(dbpath, dbname(i), NULL);
			gtags_exist[i] = test("fr", path);
		}
		/*
		 * Real GRTAGS includes virtual GSYMS.
		 */
		gtags_exist[GSYMS] = symbol ? 1 : 0;
		if (!gtags_exist[GPATH] || !gtags_exist[GTAGS] || !gtags_exist[GRTAGS])
			die("GPATH, GTAGS and/or GRTAGS not found. Please reexecute htags with the -g option.");
		/*
		 * version check.
		 * Do nothing, but the version of tag file will be checked.
		 */
		gtop = gtags_open(dbpath, cwdpath, GTAGS, GTAGS_READ, 0);
		gtags_close(gtop);
		/*
		 * Check whether GRTAGS is empty.
		 */
		gtop = gtags_open(dbpath, cwdpath, GRTAGS, GTAGS_READ, 0);
		if (gtags_first(gtop, NULL, 0) == NULL)
			grtags_is_empty = 1;
		gtags_close(gtop);
	}
	/*
	 * make dbpath absolute.
	 */
	{
		char buf[MAXPATHLEN];
		if (realpath(dbpath, buf) == NULL)
			die("cannot get realpath of dbpath.");
		strlimcpy(dbpath, buf, sizeof(dbpath));
	}
	/*
	 * The older version (4.8.7 or former) of GPATH doesn't have files
         * other than source file. The oflag requires new version of GPATH.
	 */
	if (other_files) {
		GFIND *gp = gfind_open(dbpath, NULL, 0, 0);
		if (gp->version < 2)
			die("GPATH is old format. Please remake it by invoking gtags(1).");
		gfind_close(gp);
	}
	/*
	 * for global(1) and gtags(1).
	 */
	set_env("GTAGSROOT", cwdpath);
	set_env("GTAGSDBPATH", dbpath);
	set_env("GTAGSLIBPATH", "");
	/*------------------------------------------------------------------
	 * MAKE FILES
	 *------------------------------------------------------------------
	 *       HTML/cgi-bin/global.cgi ... CGI program (1)
	 *       HTML/cgi-bin/ghtml.cgi  ... unzip script (1)
	 *       HTML/.htaccess          ... skeleton of .htaccess (1)
	 *       HTML/help.html          ... help file (2)
	 *       HTML/R/                 ... references (3)
	 *       HTML/D/                 ... definitions (3)
	 *       HTML/search.html        ... search index (4)
	 *       HTML/defines.html       ... definitions index (5)
	 *       HTML/defines/           ... definitions index (5)
	 *       HTML/files/             ... file index (6)
	 *       HTML/index.html         ... index file (7)
	 *       HTML/mains.html         ... main index (8)
	 *       HTML/null.html          ... main null html (8)
	 *       HTML/S/                 ... source files (9)
	 *       HTML/I/                 ... include file index (9)
	 *       HTML/rebuild.sh         ... rebuild script (10)
	 *       HTML/style.css          ... style sheet (11)
	 *------------------------------------------------------------------
	 */
	/* for clean up */
	signal_setup();
	sethandler(clean);

        HTML = normal_suffix;

	message("[%s] Htags started", now());
	init_statistics();
	/*
	 * (#) check if GTAGS, GRTAGS is the latest.
	 */
	if (get_dbpath())
		message(" Using %s/GTAGS.", get_dbpath());
	if (grtags_is_empty)
		message(" GRTAGS is empty.");
	if (gpath_open(dbpath, 0) < 0)
		die("GPATH not found.");
	if (!w32) {
		/* UNDER CONSTRUCTION */
	}
	if (auto_completion || tree_view) {
		STATIC_STRBUF(sb);
		strbuf_clear(sb);
		strbuf_puts_nl(sb, "<script type='text/javascript' src='js/jquery.js'></script>");
		if (auto_completion)
			loadfile(makepath(datadir, "gtags/jscode_suggest", NULL), sb);
		if (tree_view)
			loadfile(makepath(datadir, "gtags/jscode_treeview", NULL), sb);
		jscode = strbuf_value(sb);
	}
	/*
	 * (0) make directories
	 */
	message("[%s] (0) making directories ...", now());
	if (!test("d", distpath))
		if (mkdir(distpath, 0777) < 0)
			die("cannot make directory '%s'.", distpath);
	make_directory_in_distpath("files");
	make_directory_in_distpath("defines");
	make_directory_in_distpath(SRCS);
	make_directory_in_distpath(INCS);
	make_directory_in_distpath(INCREFS);
	if (!dynamic) {
		make_directory_in_distpath(DEFS);
		make_directory_in_distpath(REFS);
		if (symbol)
			make_directory_in_distpath(SYMS);
	}
	if (fflag || dynamic)
		make_directory_in_distpath("cgi-bin");
	if (Iflag)
		make_directory_in_distpath("icons");
	if (auto_completion || tree_view)
		 make_directory_in_distpath("js");
	/*
	 * (1) make CGI program
	 */
	if (fflag || dynamic) {
		char cgidir[MAXPATHLEN];

		snprintf(cgidir, sizeof(cgidir), "%s/cgi-bin", distpath);
		message("[%s] (1) making CGI program ...", now());
		if (fflag || dynamic)
			makeprogram(cgidir, "global.cgi", 0755);
		if (auto_completion)
			makeprogram(cgidir, "completion.cgi", 0755);
		makehtaccess(cgidir, ".htaccess", 0644);
	} else {
		message("[%s] (1) making CGI program ...(skipped)", now());
	}
	if (av) {
		const char *path = makepath(distpath, "GTAGSROOT", NULL);
		FILE *op = fopen(path, "w");
		if (op == NULL)
			die("cannot make file '%s'.", path);
		fputs(cwdpath, op);
		fputc('\n', op);
		fclose(op);
	}
	/*
	 * (2) make help file
	 */
	message("[%s] (2) making help.html ...", now());
	makehelp("help.html");
	/*
	 * (#) load GPATH
	 */
	load_gpath(dbpath);

	/*
	 * (3) make function entries (D/ and R/)
	 *     MAKING TAG CACHE
	 */
	message("[%s] (3) making tag lists ...", now());
	cache_open();
	tim = statistics_time_start("Time of making tag lists");
	func_total = makedupindex();
	statistics_time_end(tim);
	message("Total %d functions.", func_total);
	/*
	 * (4) search index. (search.html)
	 */
	if (Fflag && fflag) {
		message("[%s] (4) making search index ...", now());
		makesearchindex("search.html");
	}
	{
		STRBUF *defines = strbuf_open(0);
		STRBUF *files = strbuf_open(0);

		/*
		 * (5) make definition index (defines.html and defines/)
		 *     PRODUCE @defines
		 */
		message("[%s] (5) making definition index ...", now());
		tim = statistics_time_start("Time of making definition index");
		func_total = makedefineindex("defines.html", func_total, defines);
		statistics_time_end(tim);
		message("Total %d functions.", func_total);
		/*
		 * (6) make file index (files.html and files/)
		 *     PRODUCE @files, %includes
		 */
		message("[%s] (6) making file index ...", now());
		init_inc();
		tim = statistics_time_start("Time of making file index");
		file_total = makefileindex("files.html", files);
		statistics_time_end(tim);
		message("Total %d files.", file_total);
		html_count += file_total;
		/*
		 * (7) make call tree using cflow(1)'s output (cflow.html)
		 */
		if (call_file || callee_file) {
			message("[%s] (7) making cflow index ...", now());
			tim = statistics_time_start("Time of making cflow index");
			if (call_file)
				if (makecflowindex("call.html", call_file) < 0)
					call_file = NULL;
			if (callee_file)
				if (makecflowindex("callee.html", callee_file) < 0)
					callee_file = NULL;
			statistics_time_end(tim);
		}
		/*
		 * [#] make include file index.
		 */
		message("[%s] (#) making include file index ...", now());
		tim = statistics_time_start("Time of making include file index");
		makeincludeindex();
		statistics_time_end(tim);
		/*
		 * [#] make a common part for mains.html and index.html
		 *     USING @defines @files
		 */
		message("[%s] (#) making a common part ...", now());
		index = makecommonpart(title, strbuf_value(defines), strbuf_value(files));

		strbuf_close(defines);
		strbuf_close(files);
	}
	/*
	 * (7)make index file (index.html)
	 */
	message("[%s] (7) making index file ...", now());
	makeindex("index.html", title, index);
	/*
	 * (8) make main index (mains.html)
	 */
	message("[%s] (8) making main index ...", now());
	makemainindex("mains.html", index);
	/*
	 * (9) make HTML files (SRCS/)
	 *     USING TAG CACHE, %includes and anchor database.
	 */
	message("[%s] (9) making hypertext from source code ...", now());
	tim = statistics_time_start("Time of making hypertext");
	makehtml(file_total);
	statistics_time_end(tim);
	/*
	 * (10) rebuild script. (rebuild.sh)
	 *
	 * Don't grant execute permission to rebuild script.
	 */
	makerebuild("rebuild.sh");
	if (chmod(makepath(distpath, "rebuild.sh", NULL), 0640) < 0)
		die("cannot chmod rebuild script.");
	/*
	 * (11) style sheet file (style.css)
	 */
	if (enable_xhtml) {
		char src[MAXPATHLEN];
		char dist[MAXPATHLEN];
		snprintf(src, sizeof(src), "%s/gtags/style.css", datadir);
		snprintf(dist, sizeof(dist), "%s/style.css", distpath);
		copyfile(src, dist);
	}
	if (auto_completion || tree_view) {
		char src[MAXPATHLEN];
		char dist[MAXPATHLEN];

		snprintf(src, sizeof(src), "%s/gtags/jquery", datadir);
		snprintf(dist, sizeof(dist), "%s/js", distpath);
		copydirectory(src, dist);
		snprintf(src, sizeof(src), "%s/gtags/jquery/images", datadir);
		snprintf(dist, sizeof(dist), "%s/js/images", distpath);
		copydirectory(src, dist);
	}
	message("[%s] Done.", now());
	if (vflag && (fflag || dynamic || auto_completion)) {
		message("\n[Information]\n");
		message(" o Htags was invoked with the -f, -c, -D or --auto-completion option. You should");
		message("   start http server so that cgi-bin/*.cgi is executed as a CGI script.");
 		message("\n If you are using Apache, 'HTML/.htaccess' might be helpful for you.\n");
		message(" Good luck!\n");
	}
	if (Iflag) {
		char src[MAXPATHLEN];
		char dist[MAXPATHLEN];

		snprintf(src, sizeof(src), "%s/gtags/icons", datadir);
		snprintf(dist, sizeof(dist), "%s/icons", distpath);
		copydirectory(src, dist);
	}
	gpath_close();
	/*
	 * Print statistics information.
	 */
	print_statistics(statistics);
	clean();
	return 0;
}
Ejemplo n.º 2
0
int
main(int argc, char **argv)
{
	char c;
	const char *p, *browser = NULL, *definition = NULL;
	STRBUF *arg = strbuf_open(0);
	STRBUF *URL = strbuf_open(0);

	while (--argc > 0 && ((c = (++argv)[0][0]) == '-' || c == '+')) {
		if (argv[0][1] == '-') {
			if (!strcmp("--help", argv[0]))
				help();
			else if (!strcmp("--version", argv[0]))
				show_version++;
			else if (!strcmp("--quiet", argv[0])) {
				qflag++;
				vflag = 0;
			} else if (!strcmp("--verbose", argv[0])) {
				vflag++;
				qflag = 0;
			} else
				usage();
			continue;
		}
		if (c == '+') {
			linenumber = atoi(argv[0] + 1);
			continue;
		}
		p = argv[0] + 1;
		switch (*p) {
		case 'b':
			browser = argv[1];
			--argc; ++argv;
			break;
		case 'd':
			definition = argv[1];
			--argc; ++argv;
			break;
		case 'p':
			pflag++;
			break;
		case 'q':
			qflag++;
			setquiet();
			break;
		case 'v':
			vflag++;
			setverbose();
			break;
		default:
			usage();
		}
	}
	if (show_version)
		version(progname, vflag);
	/*
	 * Load aliases from .gozillarc.
	 */
	load_alias();

	/*
	 * Decide browser.
	 */
	if (!browser && getenv("BROWSER"))
		browser = getenv("BROWSER");
	if (!browser && alias("BROWSER"))
		browser = alias("BROWSER");
	/*
	 * In DOS & Windows, let the file: association handle it.
	 */
#if !(_WIN32 || __DJGPP__)
	if (!browser)
		browser = "mozilla";
#endif

	/*
	 * Replace alias name.
	 */
	if (definition == NULL) {
		if (argc == 0)
			usage();
		strbuf_puts(arg, argv[0]);
		/*
		 * Replace with alias value.
		 */
		if ((p = alias(strbuf_value(arg))) != NULL) {
			strbuf_reset(arg);
			strbuf_puts(arg, p);
		}
	}
	/*
	 * Get URL.
	 */
	{
		char *argument = strbuf_value(arg);

		/*
		 * Protocol (xxx://...)
		 */
		if (!definition && isprotocol(argument)) {
			strbuf_puts(URL, argument);
		} else {
			const char *HTMLdir = NULL;

			if (setupdbpath(0) == 0) {
				cwd = get_cwd();
				root = get_root();
				dbpath = get_dbpath();
				HTMLdir = locate_HTMLdir();
			} 
			/*
			 * Make a URL of hypertext from the argument.
			 */
			if (HTMLdir != NULL) {
				if (definition)
					getdefinitionURL(definition, HTMLdir, URL);
				else
					getURL(argument, HTMLdir, URL);
			}
			/*
			 * Make a file URL.
			 */
			else if (test("fr", argument) || test("dr", argument)) {
				char cwd[MAXPATHLEN];
				char result[MAXPATHLEN];

				if (getcwd(cwd, sizeof(cwd)) == NULL)
					die("cannot get current directory.");
				if (rel2abs(argument, cwd, result, sizeof(result)) == NULL)
					die("rel2abs failed.");
				strbuf_puts(URL, "file://");
				strbuf_puts(URL, result);
			} else {
				die_with_code(1, "file '%s' not found.", argument);
			}
		}
	}
	if (pflag) {
		fprintf(stdout, "%s\n", strbuf_value(URL));
		if (vflag)
			fprintf(stdout, "using browser '%s'.\n", browser);
		exit(0);
	}
	/*
	 * Show URL's page.
	 */
	show_page_by_url(browser, strbuf_value(URL));
	exit(0);
}
Ejemplo n.º 3
0
int
main(int argc, char **argv)
{
    char dbpath[MAXPATHLEN];
    char cwd[MAXPATHLEN];
    STRBUF *sb = strbuf_open(0);
    int optchar;
    int option_index = 0;
    STATISTICS_TIME *tim;

    /*
     * Setup GTAGSCONF and GTAGSLABEL environment variable
     * according to the --gtagsconf and --gtagslabel option.
     */
    preparse_options(argc, argv);
    /*
     * Get the project root directory.
     */
    if (!vgetcwd(cwd, MAXPATHLEN))
        die("cannot get current directory.");
    canonpath(cwd);
    /*
     * Load configuration file.
     */
    openconf(cwd);
    configuration();
    setenv_from_config();
    {
        char *env = getenv("GTAGS_OPTIONS");
        if (env && *env)
            argv = prepend_options(&argc, argv, env);
    }
    logging_arguments(argc, argv);
    while ((optchar = getopt_long(argc, argv, "cd:f:iIn:oOqvwse", long_options, &option_index)) != EOF) {
        switch (optchar) {
        case 0:
            /* already flags set */
            break;
        case OPT_CONFIG:
            show_config = 1;
            if (optarg)
                config_name = optarg;
            break;
        case OPT_GTAGSCONF:
        case OPT_GTAGSLABEL:
            /* These options are already parsed in preparse_options() */
            break;
        case OPT_SINGLE_UPDATE:
            iflag++;
            single_update = optarg;
            break;
        case OPT_ACCEPT_DOTFILES:
            set_accept_dotfiles();
            break;
        case 'c':
            cflag++;
            break;
        case 'd':
            dump_target = optarg;
            break;
        case 'f':
            file_list = optarg;
            break;
        case 'i':
            iflag++;
            break;
        case 'I':
            Iflag++;
            break;
        case 'o':
            /*
             * Though the -o(--omit-gsyms) was removed, this code
             * is left for compatibility.
             */
            break;
        case 'O':
            Oflag++;
            break;
        case 'q':
            qflag++;
            setquiet();
            break;
        case 'w':
            wflag++;
            break;
        case 'v':
            vflag++;
            setverbose();
            break;
        default:
            usage();
            break;
        }
    }
    if (qflag)
        vflag = 0;
    if (show_version)
        version(NULL, vflag);
    if (show_help)
        help();

    argc -= optind;
    argv += optind;

    /* If dbpath is specified, -O(--objdir) option is ignored. */
    if (argc > 0)
        Oflag = 0;
    if (show_config) {
        openconf(setupdbpath(0) == 0 ? get_root() : NULL);
        if (config_name)
            printconf(config_name);
        else
            fprintf(stdout, "%s\n", getconfline());
        exit(0);
    } else if (dump_target) {
        /*
         * Dump a tag file.
         */
        DBOP *dbop = NULL;
        const char *dat = 0;
        int is_gpath = 0;

        if (!test("f", dump_target))
            die("file '%s' not found.", dump_target);
        if ((dbop = dbop_open(dump_target, 0, 0, DBOP_RAW)) == NULL)
            die("file '%s' is not a tag file.", dump_target);
        /*
         * The file which has a NEXTKEY record is GPATH.
         */
        if (dbop_get(dbop, NEXTKEY))
            is_gpath = 1;
        for (dat = dbop_first(dbop, NULL, NULL, 0); dat != NULL; dat = dbop_next(dbop)) {
            const char *flag = is_gpath ? dbop_getflag(dbop) : "";

            if (*flag)
                printf("%s\t%s\t%s\n", dbop->lastkey, dat, flag);
            else
                printf("%s\t%s\n", dbop->lastkey, dat);
        }
        dbop_close(dbop);
        exit(0);
    } else if (Iflag) {
#define REQUIRED_MKID_VERSION "4.5"
        char *p;

        if (!usable("mkid"))
            die("mkid not found.");
        if (read_first_line("mkid --version", sb))
            die("mkid cannot executed.");
        p = strrchr(strbuf_value(sb), ' ');
        if (p == NULL)
            die("invalid version string of mkid: %s", strbuf_value(sb));
        switch (check_version(p + 1, REQUIRED_MKID_VERSION)
#ifdef _WIN32
                || strcmp(p + 1, "3.2.99") == 0
#endif
               )  {
        case 1:
            break;	/* OK */
        case 0:
            die("mkid version %s or later is required.", REQUIRED_MKID_VERSION);
        default:
            die("invalid version string of mkid: %s", strbuf_value(sb));
        }
    }

    /*
     * If 'gtags.files' exists, use it as a file list.
     * If the file_list other than "-" is given, it must be readable file.
     */
    if (file_list == NULL && test("f", GTAGSFILES))
        file_list = GTAGSFILES;
    if (file_list && strcmp(file_list, "-")) {
        if (test("d", file_list))
            die("'%s' is a directory.", file_list);
        else if (!test("f", file_list))
            die("'%s' not found.", file_list);
        else if (!test("r", file_list))
            die("'%s' is not readable.", file_list);
    }
    /*
     * Regularize the path name for single updating (--single-update).
     */
    if (single_update) {
        static char regular_path_name[MAXPATHLEN];
        char *p = single_update;

        if (!test("f", p))
            die("'%s' not found.", p);
#if _WIN32 || __DJGPP__
        for (; *p; p++)
            if (*p == '\\')
                *p = '/';
        p = single_update;
#define LOCATEFLAG MATCH_AT_FIRST|IGNORE_CASE
#else
#define LOCATEFLAG MATCH_AT_FIRST
#endif
        if (isabspath(p)) {
            char *q = locatestring(p, cwd, LOCATEFLAG);

            if (q && *q == '/')
                snprintf(regular_path_name, MAXPATHLEN, "./%s", q + 1);
            else
                die("path '%s' is out of the project.", p);

        } else {
            if (p[0] == '.' && p[1] == '/')
                snprintf(regular_path_name, MAXPATHLEN, "%s", p);
            else
                snprintf(regular_path_name, MAXPATHLEN, "./%s", p);
        }
        single_update = regular_path_name;
    }
    /*
     * Decide directory (dbpath) in which gtags make tag files.
     *
     * Gtags create tag files at current directory by default.
     * If dbpath is specified as an argument then use it.
     * If the -i option specified and both GTAGS and GRTAGS exists
     * at one of the candidate directories then gtags use existing
     * tag files.
     */
    if (iflag) {
        if (argc > 0)
            realpath(*argv, dbpath);
        else if (!gtagsexist(cwd, dbpath, MAXPATHLEN, vflag))
            strlimcpy(dbpath, cwd, sizeof(dbpath));
    } else {
        if (argc > 0)
            realpath(*argv, dbpath);
        else if (Oflag) {
            char *objdir = getobjdir(cwd, vflag);

            if (objdir == NULL)
                die("Objdir not found.");
            strlimcpy(dbpath, objdir, sizeof(dbpath));
        } else
            strlimcpy(dbpath, cwd, sizeof(dbpath));
    }
    if (iflag && (!test("f", makepath(dbpath, dbname(GTAGS), NULL)) ||
                  !test("f", makepath(dbpath, dbname(GRTAGS), NULL)) ||
                  !test("f", makepath(dbpath, dbname(GPATH), NULL)))) {
        if (wflag)
            warning("GTAGS, GRTAGS or GPATH not found. -i option ignored.");
        iflag = 0;
    }
    if (!test("d", dbpath))
        die("directory '%s' not found.", dbpath);
    if (vflag)
        fprintf(stderr, "[%s] Gtags started.\n", now());
    /*
     * initialize parser.
     */
    if (vflag && gtags_parser)
        fprintf(stderr, " Using plug-in parser.\n");
    parser_init(langmap, gtags_parser);
    if (vflag && file_list)
        fprintf(stderr, " Using '%s' as a file list.\n", file_list);
    /*
     * Start statistics.
     */
    init_statistics();
    /*
     * incremental update.
     */
    if (iflag) {
        /*
         * Version check. If existing tag files are old enough
         * gtagsopen() abort with error message.
         */
        GTOP *gtop = gtags_open(dbpath, cwd, GTAGS, GTAGS_MODIFY, 0);
        gtags_close(gtop);
        /*
         * GPATH is needed for incremental updating.
         * Gtags check whether or not GPATH exist, since it may be
         * removed by mistake.
         */
        if (!test("f", makepath(dbpath, dbname(GPATH), NULL)))
            die("Old version tag file found. Please remake it.");
        (void)incremental(dbpath, cwd);
        print_statistics(statistics);
        exit(0);
    }
    /*
     * create GTAGS and GRTAGS
     */
    createtags(dbpath, cwd);
    /*
     * create idutils index.
     */
    if (Iflag) {
        FILE *op;
        GFIND *gp;
        const char *path;

        tim = statistics_time_start("Time of creating ID");
        if (vflag)
            fprintf(stderr, "[%s] Creating indexes for idutils.\n", now());
        strbuf_reset(sb);
        /*
         * Since idutils stores the value of PWD in ID file, we need to
         * force idutils to follow our style.
         */
#if _WIN32 || __DJGPP__
        strbuf_puts(sb, "mkid --files0-from=-");
#else
        strbuf_sprintf(sb, "PWD=%s mkid --files0-from=-", quote_shell(cwd));
#endif
        if (vflag)
            strbuf_puts(sb, " -v");
        strbuf_sprintf(sb, " --file=%s/ID", quote_shell(dbpath));
        if (vflag) {
#ifdef __DJGPP__
            if (is_unixy())	/* test for 4DOS as well? */
#endif
                strbuf_puts(sb, " 1>&2");
        } else {
            strbuf_puts(sb, " >" NULL_DEVICE);
#ifdef __DJGPP__
            if (is_unixy())	/* test for 4DOS as well? */
#endif
                strbuf_puts(sb, " 2>&1");
        }
        if (debug)
            fprintf(stderr, "executing mkid like: %s\n", strbuf_value(sb));
        op = popen(strbuf_value(sb), "w");
        if (op == NULL)
            die("cannot execute '%s'.", strbuf_value(sb));
        gp = gfind_open(dbpath, NULL, GPATH_BOTH);
        while ((path = gfind_read(gp)) != NULL) {
            fputs(path, op);
            fputc('\0', op);
        }
        gfind_close(gp);
        if (pclose(op) != 0)
            die("terminated abnormally '%s' (errno = %d).", strbuf_value(sb), errno);
        if (test("f", makepath(dbpath, "ID", NULL)))
            if (chmod(makepath(dbpath, "ID", NULL), 0644) < 0)
                die("cannot chmod ID file.");
        statistics_time_end(tim);
    }
    if (vflag)
        fprintf(stderr, "[%s] Done.\n", now());
    closeconf();
    strbuf_close(sb);
    print_statistics(statistics);

    return 0;
}
Ejemplo n.º 4
0
int
main(int argc, char **argv)
{
	char dbpath[MAXPATHLEN];
	char cwd[MAXPATHLEN];
	STRBUF *sb = strbuf_open(0);
	int optchar;
	int option_index = 0;
	STATISTICS_TIME *tim;

	while ((optchar = getopt_long(argc, argv, "cd:f:iuIn:oOqvwse", long_options, &option_index)) != EOF) {
		switch (optchar) {
		case 0:
			/* already flags set */
			break;
		case OPT_CONFIG:
			show_config = 1;
			if (optarg)
				config_name = optarg;
			break;
		case OPT_GTAGSCONF:
			gtagsconf = optarg;
			break;
		case OPT_GTAGSLABEL:
			gtagslabel = optarg;
			break;
		case OPT_PATH:
			do_path = 1;
			if (!strcmp("absolute", optarg))
				convert_type = PATH_ABSOLUTE;
			else if (!strcmp("relative", optarg))
				convert_type = PATH_RELATIVE;
			else if (!strcmp("through", optarg))
				convert_type = PATH_THROUGH;
			else
				die("Unknown path type.");
			break;
		case OPT_SINGLE_UPDATE:
			iflag++;
			single_update = optarg;
			break;
		case OPT_ENCODE_PATH:
			if (strlen(optarg) > 255)
				die("too many encode chars.");
			if (strchr(optarg, '/') || strchr(optarg, '.'))
				die("cannot encode '/' and '.' in the path.");
			set_encode_chars((unsigned char *)optarg);
			break;
		case 'c':
			cflag++;
			break;
		case 'd':
			dump_target = optarg;
			break;
		case 'f':
			file_list = optarg;
			break;
		case 'i':
			iflag++;
			break;
		case 'u':
			uflag++;
			iflag++;
			break;
		case 'I':
			Iflag++;
			break;
		case 'o':
			/*
			 * Though the -o(--omit-gsyms) was removed, this code
			 * is left for compatibility.
			 */
			break;
		case 'O':
			Oflag++;
			break;
		case 'q':
			qflag++;
			setquiet();
			break;
		case 'w':
			wflag++;
			break;
		case 'v':
			vflag++;
			setverbose();
			break;
		default:
			usage();
			break;
		}
	}
	if (gtagsconf) {
		char path[MAXPATHLEN];

		if (realpath(gtagsconf, path) == NULL)
			die("%s not found.", gtagsconf);
		set_env("GTAGSCONF", path);
	}
	if (gtagslabel) {
		set_env("GTAGSLABEL", gtagslabel);
	}
	if (qflag)
		vflag = 0;
	if (show_version)
		version(NULL, vflag);
	if (show_help)
		help();

	argc -= optind;
        argv += optind;

	/* If dbpath is specified, -O(--objdir) option is ignored. */
	if (argc > 0)
		Oflag = 0;
	if (show_config) {
		if (config_name)
			printconf(config_name);
		else
			fprintf(stdout, "%s\n", getconfline());
		exit(0);
	} else if (do_path) {
		/*
		 * This is the main body of path filter.
		 * This code extract path name from tag line and
		 * replace it with the relative or the absolute path name.
		 *
		 * By default, if we are in src/ directory, the output
		 * should be converted like follws:
		 *
		 * main      10 ./src/main.c  main(argc, argv)\n
		 * main      22 ./libc/func.c   main(argc, argv)\n
		 *		v
		 * main      10 main.c  main(argc, argv)\n
		 * main      22 ../libc/func.c   main(argc, argv)\n
		 *
		 * Similarly, the --path=absolute option specified, then
		 *		v
		 * main      10 /prj/xxx/src/main.c  main(argc, argv)\n
		 * main      22 /prj/xxx/libc/func.c   main(argc, argv)\n
		 */
		STRBUF *ib = strbuf_open(MAXBUFLEN);
		CONVERT *cv;
		char *ctags_x;

		if (argc < 3)
			die("gtags --path: 3 arguments needed.");
		cv = convert_open(convert_type, FORMAT_CTAGS_X, argv[0], argv[1], argv[2], stdout);
		while ((ctags_x = strbuf_fgets(ib, stdin, STRBUF_NOCRLF)) != NULL)
			convert_put(cv, ctags_x);
		convert_close(cv);
		strbuf_close(ib);
		exit(0);
	} else if (dump_target) {
		/*
		 * Dump a tag file.
		 */
		DBOP *dbop = NULL;
		const char *dat = 0;
		int is_gpath = 0;

		char* target_file = NULL;
		if (!test("f", dump_target)) {
			target_file = strchr(dump_target, ':');
			if (target_file == NULL) 
				die("file '%s' not found", dump_target);

			*target_file++ = 0; //move to the next char, which starts the target file.
			if (!test("f", dump_target)) {
				die("file '%s' not found.", dump_target);
			}
		}

		if ((dbop = dbop_open(dump_target, 0, 0, DBOP_RAW)) == NULL)
			die("file '%s' is not a tag file.", dump_target);
		/*
		 * The file which has a NEXTKEY record is GPATH.
		 */
		if (dbop_get(dbop, NEXTKEY))
			is_gpath = 1;

		if (target_file && !is_gpath) {
			die("dump target_file can only be used with GPATH");
		}

		if (target_file) {
			dat = dbop_get(dbop, target_file);
			if (dat == NULL) {
				die("target_file %s not found in GPATH", target_file);
			}
			time_t t = gpath_mtime(dbop, target_file);
			printf("%d\n", t);
		} else {
			for (dat = dbop_first(dbop, NULL, NULL, 0); dat != NULL; dat = dbop_next(dbop)) {
				const char *flag = is_gpath ? dbop_getflag(dbop) : "";

				if (*flag)
					if (is_gpath) {
						time_t t = gpath_mtime(dbop, dbop->lastkey);
						printf("%s\t%s\t%s\t%s\n", dbop->lastkey, dat, flag, ctime(&t));
					} else
						printf("%s\t%s\t%s\n", dbop->lastkey, dat, flag);
				else
					printf("%s\t%s\n", dbop->lastkey, dat);
			}
		}
		dbop_close(dbop);
		exit(0);
	} else if (Iflag) {
		if (!usable("mkid"))
			die("mkid not found.");
	}

	/*
	 * If 'gtags.files' exists, use it as a file list.
	 * If the file_list other than "-" is given, it must be readable file.
	 */
	if (file_list == NULL && test("f", GTAGSFILES))
		file_list = GTAGSFILES;
	if (file_list && strcmp(file_list, "-")) {
		if (test("d", file_list))
			die("'%s' is a directory.", file_list);
		else if (!test("f", file_list))
			die("'%s' not found.", file_list);
		else if (!test("r", file_list))
			die("'%s' is not readable.", file_list);
	}
	/*
	 * Regularize the path name for single updating (--single-update).
	 */
	if (single_update) {
		static char regular_path_name[MAXPATHLEN];
		char *p = single_update;
		
		if (!test("f", p))
			die("'%s' not found.", p);
		if (isabspath(p))
			die("--single-update requires relative path name.");
		if (!(p[0] == '.' && p[1] == '/')) {
			snprintf(regular_path_name, MAXPATHLEN, "./%s", p);
			p = regular_path_name;
		}
		single_update = p;
	}
	if (!getcwd(cwd, MAXPATHLEN))
		die("cannot get current directory.");
	canonpath(cwd);
	/*
	 * Decide directory (dbpath) in which gtags make tag files.
	 *
	 * Gtags create tag files at current directory by default.
	 * If dbpath is specified as an argument then use it.
	 * If the -i option specified and both GTAGS and GRTAGS exists
	 * at one of the candidate directories then gtags use existing
	 * tag files.
	 */
	if (iflag) {
		if (argc > 0)
			realpath(*argv, dbpath);
		else if (!gtagsexist(cwd, dbpath, MAXPATHLEN, vflag))
			strlimcpy(dbpath, cwd, sizeof(dbpath));
	} else {
		if (argc > 0)
			realpath(*argv, dbpath);
		else if (Oflag) {
			char *objdir = getobjdir(cwd, vflag);

			if (objdir == NULL)
				die("Objdir not found.");
			strlimcpy(dbpath, objdir, sizeof(dbpath));
		} else
			strlimcpy(dbpath, cwd, sizeof(dbpath));
	}
	if (iflag && (!test("f", makepath(dbpath, dbname(GTAGS), NULL)) ||
		!test("f", makepath(dbpath, dbname(GRTAGS), NULL)) ||
		!test("f", makepath(dbpath, dbname(GPATH), NULL)))) {
		if (wflag)
			warning("GTAGS, GRTAGS or GPATH not found. -i option ignored.");
		iflag = 0;
	}
	if (!test("d", dbpath))
		die("directory '%s' not found.", dbpath);
	if (vflag)
		fprintf(stderr, "[%s] Gtags started.\n", now());
	/*
	 * load configuration file.
	 */
	openconf();
	if (getconfb("extractmethod"))
		extractmethod = 1;
	strbuf_reset(sb);
	if (getconfs("langmap", sb))
		langmap = check_strdup(strbuf_value(sb));
	strbuf_reset(sb);
	if (getconfs("gtags_parser", sb))
		gtags_parser = check_strdup(strbuf_value(sb));
	/*
	 * initialize parser.
	 */
	if (vflag && gtags_parser)
		fprintf(stderr, " Using plug-in parser.\n");
	parser_init(langmap, gtags_parser);
	if (vflag && file_list)
		fprintf(stderr, " Using '%s' as a file list.\n", file_list);
	/*
	 * Start statistics.
	 */
	init_statistics();
	/*
	 * incremental update.
	 */
	if (iflag) {
		/*
		 * Version check. If existing tag files are old enough
		 * gtagsopen() abort with error message.
		 */
		GTOP *gtop = gtags_open(dbpath, cwd, GTAGS, GTAGS_MODIFY, 0);
		gtags_close(gtop);
		/*
		 * GPATH is needed for incremental updating.
		 * Gtags check whether or not GPATH exist, since it may be
		 * removed by mistake.
		 */
		if (!test("f", makepath(dbpath, dbname(GPATH), NULL)))
			die("Old version tag file found. Please remake it.");
		(void)incremental(dbpath, cwd);
		print_statistics(statistics);
		exit(0);
	}
	/*
	 * create GTAGS and GRTAGS
	 */
	createtags(dbpath, cwd);
	/*
	 * create idutils index.
	 */
	if (Iflag) {
		tim = statistics_time_start("Time of creating ID");
		if (vflag)
			fprintf(stderr, "[%s] Creating indexes for idutils.\n", now());
		strbuf_reset(sb);
		strbuf_puts(sb, "mkid");
		if (vflag)
			strbuf_puts(sb, " -v");
		strbuf_sprintf(sb, " --file='%s/ID'", dbpath);
		if (vflag) {
#ifdef __DJGPP__
			if (is_unixy())	/* test for 4DOS as well? */
#endif
			strbuf_puts(sb, " 1>&2");
		} else {
			strbuf_puts(sb, " >/dev/null");
		}
		if (debug)
			fprintf(stderr, "executing mkid like: %s\n", strbuf_value(sb));
		if (system(strbuf_value(sb)))
			die("mkid failed: %s", strbuf_value(sb));
		if (chmod(makepath(dbpath, "ID", NULL), 0644) < 0)
			die("cannot chmod ID file.");
		statistics_time_end(tim);
	}
	if (vflag)
		fprintf(stderr, "[%s] Done.\n", now());
	closeconf();
	strbuf_close(sb);
	print_statistics(statistics);

	return 0;
}
Ejemplo n.º 5
0
int
main(int argc, char **argv)
{
	const char *av = NULL;
	int db;
	int optchar;
	int option_index = 0;
	int status = 0;

	/*
	 * get path of following directories.
	 *	o current directory
	 *	o root of source tree
	 *	o dbpath directory
	 *
	 * if GTAGS not found, exit with an error message.
	 */
	status = setupdbpath(0);
	if (status == 0) {
		cwd = get_cwd();
		root = get_root();
		dbpath = get_dbpath();
	}
	/*
	 * Setup GTAGSCONF and GTAGSLABEL environment variable
	 * according to the --gtagsconf and --gtagslabel option.
	 */
	preparse_options(argc, argv);
	/*
	 * Open configuration file.
	 */
	openconf(root);
	setenv_from_config();
	logging_arguments(argc, argv);
	while ((optchar = getopt_long(argc, argv, "acde:EifFgGIlL:MnoOpPqrsS:tTuvVx", long_options, &option_index)) != EOF) {
		switch (optchar) {
		case 0:
			break;
		case 'a':
			aflag++;
			break;
		case 'c':
			cflag++;
			setcom(optchar);
			break;
		case 'd':
			dflag++;
			break;
		case 'e':
			av = optarg;
			break;
		case 'E':
			Gflag = 0;
			break;
		case 'f':
			fflag++;
			xflag++;
			setcom(optchar);
			break;
		case 'F':
			Tflag = 0;
			break;
		case 'g':
			gflag++;
			setcom(optchar);
			break;
		case 'G':
			Gflag++;
			break;
		case 'i':
			iflag++;
			break;
		case 'I':
			Iflag++;
			setcom(optchar);
			break;
		case 'l':
			Sflag++;
			scope = ".";
			break;
		case 'L':
			file_list = optarg;
			break;
		case 'M':
			Mflag++;
			iflag = 0;
			break;
		case 'n':
			nflag++;
			if (optarg) {
				if (!strcmp(optarg, "sort"))
					nofilter |= SORT_FILTER;
				else if (!strcmp(optarg, "path"))
					nofilter |= PATH_FILTER;
			} else {
				nofilter = BOTH_FILTER;
			}
			break;
		case 'o':
			oflag++;
			break;
		case 'O':
			Oflag++;
			break;
		case 'p':
			pflag++;
			setcom(optchar);
			break;
		case 'P':
			Pflag++;
			setcom(optchar);
			break;
		case 'q':
			qflag++;
			setquiet();
			break;
		case 'r':
			rflag++;
			break;
		case 's':
			sflag++;
			break;
		case 'S':
			Sflag++;
			scope = optarg;
			break;
		case 't':
			tflag++;
			break;
		case 'T':
			Tflag++;
			break;
		case 'u':
			uflag++;
			setcom(optchar);
			break;
		case 'v':
			vflag++;
			setverbose();
			break;
		case 'V':
			Vflag++;
			break;
		case 'x':
			xflag++;
			break;
		case OPT_USE_COLOR:
			if (optarg) {
				if (!strcmp(optarg, "never"))
					use_color = 0;
				else if (!strcmp(optarg, "always"))
					use_color = 1;
				else if (!strcmp(optarg, "auto"))
					use_color = 2;
				else
					die_with_code(2, "unknown color type.");
			} else {
				use_color = 2;
			}
			break;
		case OPT_ENCODE_PATH:
			encode_chars = optarg;
			break;
		case OPT_FROM_HERE:
			{
			char *p = optarg;
			const char *usage = "usage: global --from-here=lineno:path.";

			context_lineno = p;
			while (*p && isdigit(*p))
				p++;
			if (*p != ':')
				die_with_code(2, usage);
			*p++ = '\0';
			if (!*p)
				die_with_code(2, usage);
			context_file = p;
			}
			break;
		case OPT_GTAGSCONF:
		case OPT_GTAGSLABEL:
			/* These options are already parsed in preparse_options() */
			break;
		case OPT_MATCH_PART:
			if (!strcmp(optarg, "first"))
				match_part = MATCH_PART_FIRST;
			else if (!strcmp(optarg, "last"))
				match_part = MATCH_PART_LAST;
			else if (!strcmp(optarg, "all"))
				match_part = MATCH_PART_ALL;
			else
				die_with_code(2, "unknown part type for the --match-part option.");
			break;
		case OPT_PATH_CONVERT:
			do_path = 1;
			if (!strcmp("absolute", optarg))
				convert_type = PATH_ABSOLUTE;
			else if (!strcmp("relative", optarg))
				convert_type = PATH_RELATIVE;
			else if (!strcmp("through", optarg))
				convert_type = PATH_THROUGH;
			else
				die("Unknown path type.");
			break;
		case OPT_PATH_STYLE:
			path_style = optarg;
			break;
		case OPT_RESULT:
			if (!strcmp(optarg, "ctags-x"))
				format = FORMAT_CTAGS_X;
			else if (!strcmp(optarg, "ctags-xid"))
				format = FORMAT_CTAGS_XID;
			else if (!strcmp(optarg, "ctags"))
				format = FORMAT_CTAGS;
			else if (!strcmp(optarg, "ctags-mod"))
				format = FORMAT_CTAGS_MOD;
			else if (!strcmp(optarg, "path"))
				format = FORMAT_PATH;
			else if (!strcmp(optarg, "grep"))
				format = FORMAT_GREP;
			else if (!strcmp(optarg, "cscope"))
				format = FORMAT_CSCOPE;
			else
				die_with_code(2, "unknown format type for the --result option.");
			break;
		case OPT_SINGLE_UPDATE:
			single_update = optarg;
			break;
		default:
			usage();
			break;
		}
	}
	if (qflag)
		vflag = 0;
	if (show_version)
		version(av, vflag);
	if (show_help)
		help();
	if (dbpath == NULL)
		die_with_code(-status, gtags_dbpath_error);
	/*
	 * decide format.
	 * The --result option is given to priority more than the -t and -x option.
	 */
	if (format == 0) {
		if (tflag) { 			/* ctags format */
			format = FORMAT_CTAGS;
		} else if (xflag) {		/* print details */
			format = FORMAT_CTAGS_X;
		} else {			/* print just a file name */
			format = FORMAT_PATH;
		}
	}
	/*
	 * GTAGSBLANKENCODE will be used in less(1).
	 */
	switch (format) {
	case FORMAT_CTAGS_X:
	case FORMAT_CTAGS_XID:
		if (encode_chars == NULL && getenv("GTAGSBLANKENCODE"))
			encode_chars = " \t";
		break;
	}
	if (encode_chars) {
		if (strlen(encode_chars) > 255)
			die("too many encode chars.");
		if (strchr(encode_chars, '/') || strchr(encode_chars, '.'))
			warning("cannot encode '/' and '.' in the path. Ignored.");
		set_encode_chars((unsigned char *)encode_chars);
	}
	if (getenv("GTAGSTHROUGH"))
		Tflag++;
	if (use_color) {
#if defined(_WIN32) && !defined(__CYGWIN__)
		if (!(getenv("ANSICON") || LoadLibrary("ANSI32.dll")) && use_color == 2)
			use_color = 0;
#endif
		if (use_color == 2 && !isatty(1))
			use_color = 0;
		if (Vflag)
			use_color = 0;
	}
	argc -= optind;
	argv += optind;
	/*
	 * Path filter
	 */
	if (do_path) {
		/*
		 * This code is needed for globash.rc.
		 * This code extract path name from tag line and
		 * replace it with the relative or the absolute path name.
		 *
		 * By default, if we are in src/ directory, the output
		 * should be converted like follows:
		 *
		 * main      10 ./src/main.c  main(argc, argv)\n
		 * main      22 ./libc/func.c   main(argc, argv)\n
		 *		v
		 * main      10 main.c  main(argc, argv)\n
		 * main      22 ../libc/func.c   main(argc, argv)\n
		 *
		 * Similarly, the --path-convert=absolute option specified, then
		 *		v
		 * main      10 /prj/xxx/src/main.c  main(argc, argv)\n
		 * main      22 /prj/xxx/libc/func.c   main(argc, argv)\n
		 */
		STRBUF *ib = strbuf_open(MAXBUFLEN);
		CONVERT *cv;
		char *ctags_x;

		if (argc < 3)
			die("global --path-convert: 3 arguments needed.");
		cv = convert_open(convert_type, FORMAT_CTAGS_X, argv[0], argv[1], argv[2], stdout, NOTAGS);
		while ((ctags_x = strbuf_fgets(ib, stdin, STRBUF_NOCRLF)) != NULL)
			convert_put(cv, ctags_x);
		convert_close(cv);
		strbuf_close(ib);
		exit(0);
	}
	/*
	 * At first, we pickup pattern from -e option. If it is not found
	 * then use argument which is not option.
	 */
	if (!av) {
		av = *argv;
		/*
		 * global -g pattern [files ...]
		 *           av      argv
		 */
		if (gflag && av)
			argv++;
	}
	if (single_update) {
		if (command == 0) {
			uflag++;
			command = 'u';
		} else if (command != 'u') {
			;	/* ignored */
		}
	}
	/*
	 * only -c, -u, -P and -p allows no argument.
	 */
	if (!av) {
		switch (command) {
		case 'c':
		case 'u':
		case 'p':
		case 'P':
			break;
		case 'f':
			if (file_list)
				break;
		default:
			usage();
			break;
		}
	}
	/*
	 * -u and -p cannot have any arguments.
	 */
	if (av) {
		switch (command) {
		case 'u':
		case 'p':
			usage();
		default:
			break;
		}
	}
	if (tflag)
		xflag = 0;
	if (nflag > 1)
		nosource = 1;	/* to keep compatibility */
	if (print0)
		set_print0();
	if (cflag && match_part == 0)
		match_part = MATCH_PART_ALL;
	/*
	 * remove leading blanks.
	 */
	if (!Iflag && !gflag && av)
		for (; *av == ' ' || *av == '\t'; av++)
			;
	if (cflag && !Pflag && av && isregex(av))
		die_with_code(2, "only name char is allowed with -c option.");
	/*
	 * print dbpath or rootdir.
	 */
	if (pflag) {
		fprintf(stdout, "%s\n", (rflag) ? root : dbpath);
		exit(0);
	}
	/*
	 * incremental update of tag files.
	 */
	if (uflag) {
		STRBUF	*sb = strbuf_open(0);
		char *gtags_path = usable("gtags");

		if (!gtags_path)
			die("gtags command not found.");
		if (chdir(root) < 0)
			die("cannot change directory to '%s'.", root);
#if defined(_WIN32) && !defined(__CYGWIN__)
		/*
		 * Get around CMD.EXE's weird quoting rules by sticking another
		 * perceived whitespace in front (also works with Take Command).
		 */
		strbuf_putc(sb, ';');
#endif
		strbuf_puts(sb, quote_shell(gtags_path));
		strbuf_puts(sb, " -i");
		if (vflag)
			strbuf_puts(sb, " -v");
		if (single_update) {
			if (!isabspath(single_update)) {
				static char regular_path_name[MAXPATHLEN];

				if (rel2abs(single_update, cwd, regular_path_name, sizeof(regular_path_name)) == NULL)
					die("rel2abs failed.");
				single_update = regular_path_name;
			}
			strbuf_puts(sb, " --single-update ");
			strbuf_puts(sb, quote_shell(single_update));
		}
		strbuf_putc(sb, ' ');
		strbuf_puts(sb, quote_shell(dbpath));
		if (system(strbuf_value(sb)))
			exit(1);
		strbuf_close(sb);
		exit(0);
	}
	/*
	 * decide tag type.
	 */
	if (context_file) {
		if (isregex(av))
			die_with_code(2, "regular expression is not allowed with the --from-here option.");
		db = decide_tag_by_context(av, context_file, atoi(context_lineno));
	} else {
		if (dflag)
			db = GTAGS;
		else if (rflag && sflag)
			db = GRTAGS + GSYMS;
		else
			db = (rflag) ? GRTAGS : ((sflag) ? GSYMS : GTAGS);
	}
	/*
	 * complete function name
	 */
	if (cflag) {
		if (Iflag)
			completion_idutils(dbpath, root, av);
		else if (Pflag)
			completion_path(dbpath, av);
		else
			completion(dbpath, root, av, db);
		exit(0);
	}
	/*
	 * make local prefix.
	 * local prefix must starts with './' and ends with '/'.
	 */
	if (Sflag) {
		STRBUF *sb = strbuf_open(0);
		static char buf[MAXPATHLEN];
		const char *path = scope;
	
		/*
		 * normalize the path of scope directory.
		 */
		if (!test("d", path))
			die("'%s' not found or not a directory.", scope);
		if (!isabspath(path))
			path = makepath(cwd, path, NULL);
		if (realpath(path, buf) == NULL)
			die("cannot get real path of '%s'.", scope);
		if (!in_the_project(buf))
			die("'%s' is out of the source project.", scope);
		scope = buf;
		/*
		 * make local prefix.
		 */
		strbuf_putc(sb, '.');
		if (strcmp(root, scope) != 0) {
			const char *p = scope + strlen(root);
			if (*p != '/')
				strbuf_putc(sb, '/');
			strbuf_puts(sb, p);
		}
		strbuf_putc(sb, '/');
		localprefix = check_strdup(strbuf_value(sb));
		strbuf_close(sb);
#ifdef DEBUG
		fprintf(stderr, "root=%s\n", root);
		fprintf(stderr, "cwd=%s\n", cwd);
		fprintf(stderr, "localprefix=%s\n", localprefix);
#endif
	}
	/*
	 * convert the file-list path into an absolute path.
	 */
	if (file_list && strcmp(file_list, "-") && !isabspath(file_list)) {
		static char buf[MAXPATHLEN];

		if (realpath(file_list, buf) == NULL)
			die("'%s' not found.", file_list);
		file_list = buf;
	}
	/*
	 * decide path conversion type.
	 */
	if (nofilter & PATH_FILTER)
		type = PATH_THROUGH;
	else if (aflag)
		type = PATH_ABSOLUTE;
	else
		type = PATH_RELATIVE;
	if (path_style) {
		if (!strcmp(path_style, "relative"))
			type = PATH_RELATIVE;
		else if (!strcmp(path_style, "absolute"))
			type = PATH_ABSOLUTE;
		else if (!strcmp(path_style, "through"))
			type = PATH_THROUGH;
		else if (!strcmp(path_style, "shorter"))
			type = PATH_SHORTER;
		else if (!strcmp(path_style, "abslib")) {
			type = PATH_RELATIVE;
			abslib++;
		} else
			die("invalid path style.");
	}
	/*
	 * exec lid(idutils).
	 */
	if (Iflag) {
		chdir(root);
		idutils(av, dbpath);
	}
	/*
	 * search pattern (regular expression).
	 */
	else if (gflag) {
		chdir(root);
		grep(av, argv, dbpath);
	}
	/*
	 * locate paths including the pattern.
	 */
	else if (Pflag) {
		chdir(root);
		pathlist(av, dbpath);
	}
	/*
	 * parse source files.
	 */
	else if (fflag) {
		chdir(root);
		parsefile(argv, cwd, root, dbpath, db);
	}
	/*
	 * tag search.
	 */
	else {
		tagsearch(av, cwd, root, dbpath, db);
	}
	return 0;
}