C++ PG_TEXTDOMAIN函数代码示例

static void
libpq_binddomain()
{
    static bool already_bound = false;

    if (!already_bound)
    {
        /* bindtextdomain() does not preserve errno */
#ifdef WIN32
        int			save_errno = GetLastError();
#else
        int			save_errno = errno;
#endif
        const char *ldir;

        already_bound = true;
        /* No relocatable lookup here because the binary could be anywhere */
        ldir = getenv("PGLOCALEDIR");
        if (!ldir)
            ldir = LOCALEDIR;
        bindtextdomain(PG_TEXTDOMAIN("libpq"), ldir);
#ifdef WIN32
        SetLastError(save_errno);
#else
        errno = save_errno;
#endif
    }
}

int
main(int argc, char **argv)
{
	int			i;
	int			j;
	int			ret;

	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_config"));

	progname = get_progname(argv[0]);

	/* check for --help */
	for (i = 1; i < argc; i++)
	{
		if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-?") == 0)
		{
			help();
			exit(0);
		}
	}

	ret = find_my_exec(argv[0], mypath);

	if (ret)
	{
		fprintf(stderr, _("%s: could not find own program executable\n"), progname);
		exit(1);
	}

	/* no arguments -> print everything */
	if (argc < 2)
	{
		show_all();
		exit(0);
	}

	for (i = 1; i < argc; i++)
	{
		for (j = 0; info_items[j].switchname != NULL; j++)
		{
			if (strcmp(argv[i], info_items[j].switchname) == 0)
			{
				(*info_items[j].show_func) (false);
				break;
			}
		}
		if (info_items[j].switchname == NULL)
		{
			fprintf(stderr, _("%s: invalid argument: %s\n"),
					progname, argv[i]);
			advice();
			exit(1);
		}
	}

	return 0;
}

/*
 *	set_pglocale_pgservice
 *
 *	Set application-specific locale and service directory
 *
 *	This function takes the value of argv[0] rather than a full path.
 *
 * (You may be wondering why this is in exec.c.  It requires this module's
 * services and doesn't introduce any new dependencies, so this seems as
 * good as anyplace.)
 */
void
set_pglocale_pgservice(const char *argv0, const char *app)
{
	char		path[MAXPGPATH];
	char		my_exec_path[MAXPGPATH];
	char		env_path[MAXPGPATH + sizeof("PGSYSCONFDIR=")];	/* longer than
																 * PGLOCALEDIR */
	char	   *dup_path;

	/* don't set LC_ALL in the backend */
	if (strcmp(app, PG_TEXTDOMAIN("postgres")) != 0)
	{
		setlocale(LC_ALL, "");

		/*
		 * One could make a case for reproducing here PostmasterMain()'s test
		 * for whether the process is multithreaded.  Unlike the postmaster,
		 * no frontend program calls sigprocmask() or otherwise provides for
		 * mutual exclusion between signal handlers.  While frontends using
		 * fork(), if multithreaded, are formally exposed to undefined
		 * behavior, we have not witnessed a concrete bug.  Therefore,
		 * complaining about multithreading here may be mere pedantry.
		 */
	}

	if (find_my_exec(argv0, my_exec_path) < 0)
		return;

#ifdef ENABLE_NLS
	get_locale_path(my_exec_path, path);
	bindtextdomain(app, path);
	textdomain(app);

	if (getenv("PGLOCALEDIR") == NULL)
	{
		/* set for libpq to use */
		snprintf(env_path, sizeof(env_path), "PGLOCALEDIR=%s", path);
		canonicalize_path(env_path + 12);
		dup_path = strdup(env_path);
		if (dup_path)
			putenv(dup_path);
	}
#endif

	if (getenv("PGSYSCONFDIR") == NULL)
	{
		get_etc_path(my_exec_path, path);

		/* set for libpq to use */
		snprintf(env_path, sizeof(env_path), "PGSYSCONFDIR=%s", path);
		canonicalize_path(env_path + 13);
		dup_path = strdup(env_path);
		if (dup_path)
			putenv(dup_path);
	}
}

/*
 *	set_pglocale_pgservice
 *
 *	Set application-specific locale and service directory
 *
 *	This function takes the value of argv[0] rather than a full path.
 *
 * (You may be wondering why this is in exec.c.  It requires this module's
 * services and doesn't introduce any new dependencies, so this seems as
 * good as anyplace.)
 */
void
set_pglocale_pgservice(const char *argv0, const char *app)
{
	char		path[MAXPGPATH];
	char		my_exec_path[MAXPGPATH];
	char		env_path[MAXPGPATH + sizeof("PGSYSCONFDIR=")];	/* longer than
																 * PGLOCALEDIR */

	/* don't set LC_ALL in the backend */
	if (strcmp(app, PG_TEXTDOMAIN("postgres")) != 0)
		setlocale(LC_ALL, "");

	if (find_my_exec(argv0, my_exec_path) < 0)
		return;

#ifdef ENABLE_NLS
	get_locale_path(my_exec_path, path);
	bindtextdomain(app, path);
	textdomain(app);

	if (getenv("PGLOCALEDIR") == NULL)
	{
		/* set for libpq to use */
		snprintf(env_path, sizeof(env_path), "PGLOCALEDIR=%s", path);
		canonicalize_path(env_path + 12);
		putenv(strdup(env_path));
	}
#endif

	if (getenv("PGSYSCONFDIR") == NULL)
	{
		get_etc_path(my_exec_path, path);

		/* set for libpq to use */
		snprintf(env_path, sizeof(env_path), "PGSYSCONFDIR=%s", path);
		canonicalize_path(env_path + 13);
		putenv(strdup(env_path));
	}
}

int
main(int argc, char *argv[])
{
	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_test_fsync"));
	progname = get_progname(argv[0]);

	handle_args(argc, argv);

	/* Prevent leaving behind the test file */
	pqsignal(SIGINT, signal_cleanup);
	pqsignal(SIGTERM, signal_cleanup);
#ifndef WIN32
	pqsignal(SIGALRM, process_alarm);
#endif
#ifdef SIGHUP
	/* Not defined on win32 */
	pqsignal(SIGHUP, signal_cleanup);
#endif

	prepare_buf();

	test_open();

	/* Test using 1 XLOG_BLCKSZ write */
	test_sync(1);

	/* Test using 2 XLOG_BLCKSZ writes */
	test_sync(2);

	test_open_syncs();

	test_file_descriptor_sync();

	test_non_sync();

	unlink(filename);

	return 0;
}

int
main(int argc, char *argv[])
{
	static struct option long_options[] = {
		{"list", no_argument, NULL, 'l'},
		{"host", required_argument, NULL, 'h'},
		{"port", required_argument, NULL, 'p'},
		{"username", required_argument, NULL, 'U'},
		{"no-password", no_argument, NULL, 'w'},
		{"password", no_argument, NULL, 'W'},
		{"dbname", required_argument, NULL, 'd'},
		{"echo", no_argument, NULL, 'e'},
		{NULL, 0, NULL, 0}
	};

	const char *progname;
	int			optindex;
	int			c;
	bool		listlangs = false;
	const char *dbname = NULL;
	char	   *host = NULL;
	char	   *port = NULL;
	char	   *username = NULL;
	enum trivalue prompt_password = TRI_DEFAULT;
	bool		echo = false;
	char	   *langname = NULL;
	char	   *p;
	Oid			lanplcallfoid;
	Oid			laninline;
	Oid			lanvalidator;
	char	   *handler;
	char	   *inline_handler;
	char	   *validator;
	char	   *handler_ns;
	char	   *inline_ns;
	char	   *validator_ns;
	bool		keephandler;
	bool		keepinline;
	bool		keepvalidator;
	PQExpBufferData sql;
	PGconn	   *conn;
	PGresult   *result;

	progname = get_progname(argv[0]);
	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));

	handle_help_version_opts(argc, argv, "droplang", help);

	while ((c = getopt_long(argc, argv, "lh:p:U:wWd:e", long_options, &optindex)) != -1)
	{
		switch (c)
		{
			case 'l':
				listlangs = true;
				break;
			case 'h':
				host = optarg;
				break;
			case 'p':
				port = optarg;
				break;
			case 'U':
				username = optarg;
				break;
			case 'w':
				prompt_password = TRI_NO;
				break;
			case 'W':
				prompt_password = TRI_YES;
				break;
			case 'd':
				dbname = optarg;
				break;
			case 'e':
				echo = true;
				break;
			default:
				fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
				exit(1);
		}
	}

	if (argc - optind > 0)
	{
		if (listlangs)
			dbname = argv[optind++];
		else
		{
			langname = argv[optind++];
			if (argc - optind > 0)
				dbname = argv[optind++];
		}
	}

	if (argc - optind > 0)
	{
		fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
				progname, argv[optind]);
		fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
		exit(1);
//.........这里部分代码省略.........

int
main(int argc, char *argv[])
{
    ControlFileData ControlFile;
    int			fd;
    char		ControlFilePath[MAXPGPATH];
    char	   *DataDir;
    pg_crc32	crc;
    time_t		time_tmp;
    char		pgctime_str[128];
    char		ckpttime_str[128];
    char		sysident_str[32];
    const char *strftime_fmt = "%c";
    const char *progname;

    set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_controldata"));

    progname = get_progname(argv[0]);

    if (argc > 1)
    {
        if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
        {
            usage(progname);
            exit(0);
        }
        if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
        {
            puts("pg_controldata (PostgreSQL) " PG_VERSION);
            exit(0);
        }
    }

    if (argc > 1)
        DataDir = argv[1];
    else
        DataDir = getenv("PGDATA");
    if (DataDir == NULL)
    {
        fprintf(stderr, _("%s: no data directory specified\n"), progname);
        fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
        exit(1);
    }

    snprintf(ControlFilePath, MAXPGPATH, "%s/global/pg_control", DataDir);

    if ((fd = open(ControlFilePath, O_RDONLY | PG_BINARY, 0)) == -1)
    {
        fprintf(stderr, _("%s: could not open file \"%s\" for reading: %s\n"),
                progname, ControlFilePath, strerror(errno));
        exit(2);
    }

    if (read(fd, &ControlFile, sizeof(ControlFileData)) != sizeof(ControlFileData))
    {
        fprintf(stderr, _("%s: could not read file \"%s\": %s\n"),
                progname, ControlFilePath, strerror(errno));
        exit(2);
    }
    close(fd);

    /* Check the CRC. */
    INIT_CRC32(crc);
    COMP_CRC32(crc,
               (char *) &ControlFile,
               offsetof(ControlFileData, crc));
    FIN_CRC32(crc);

    if (!EQ_CRC32(crc, ControlFile.crc))
        printf(_("WARNING: Calculated CRC checksum does not match value stored in file.\n"
                 "Either the file is corrupt, or it has a different layout than this program\n"
                 "is expecting.  The results below are untrustworthy.\n\n"));

    /*
     * This slightly-chintzy coding will work as long as the control file
     * timestamps are within the range of time_t; that should be the case in
     * all foreseeable circumstances, so we don't bother importing the
     * backend's timezone library into pg_controldata.
     *
     * Use variable for format to suppress overly-anal-retentive gcc warning
     * about %c
     */
    time_tmp = (time_t) ControlFile.time;
    strftime(pgctime_str, sizeof(pgctime_str), strftime_fmt,
             localtime(&time_tmp));
    time_tmp = (time_t) ControlFile.checkPointCopy.time;
    strftime(ckpttime_str, sizeof(ckpttime_str), strftime_fmt,
             localtime(&time_tmp));

    /*
     * Format system_identifier separately to keep platform-dependent format
     * code out of the translatable message string.
     */
    snprintf(sysident_str, sizeof(sysident_str), UINT64_FORMAT,
             ControlFile.system_identifier);

    printf(_("pg_control version number:            %u\n"),
           ControlFile.pg_control_version);
    if (ControlFile.pg_control_version % 65536 == 0 && ControlFile.pg_control_version / 65536 != 0)
        printf(_("WARNING: possible byte ordering mismatch\n"
//.........这里部分代码省略.........

int
main(int argc, char *argv[])
{
	static int	if_exists = 0;

	static struct option long_options[] = {
		{"host", required_argument, NULL, 'h'},
		{"port", required_argument, NULL, 'p'},
		{"username", required_argument, NULL, 'U'},
		{"no-password", no_argument, NULL, 'w'},
		{"password", no_argument, NULL, 'W'},
		{"echo", no_argument, NULL, 'e'},
		{"interactive", no_argument, NULL, 'i'},
		{"if-exists", no_argument, &if_exists, 1},
		{"maintenance-db", required_argument, NULL, 2},
		{NULL, 0, NULL, 0}
	};

	const char *progname;
	int			optindex;
	int			c;

	char	   *dbname = NULL;
	char	   *maintenance_db = NULL;
	char	   *host = NULL;
	char	   *port = NULL;
	char	   *username = NULL;
	enum trivalue prompt_password = TRI_DEFAULT;
	bool		echo = false;
	bool		interactive = false;

	PQExpBufferData sql;

	PGconn	   *conn;
	PGresult   *result;

	progname = get_progname(argv[0]);
	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));

	handle_help_version_opts(argc, argv, "dropdb", help);

	while ((c = getopt_long(argc, argv, "h:p:U:wWei", long_options, &optindex)) != -1)
	{
		switch (c)
		{
			case 'h':
				host = pg_strdup(optarg);
				break;
			case 'p':
				port = pg_strdup(optarg);
				break;
			case 'U':
				username = pg_strdup(optarg);
				break;
			case 'w':
				prompt_password = TRI_NO;
				break;
			case 'W':
				prompt_password = TRI_YES;
				break;
			case 'e':
				echo = true;
				break;
			case 'i':
				interactive = true;
				break;
			case 0:
				/* this covers the long options */
				break;
			case 2:
				maintenance_db = pg_strdup(optarg);
				break;
			default:
				fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
				exit(1);
		}
	}

	switch (argc - optind)
	{
		case 0:
			fprintf(stderr, _("%s: missing required argument database name\n"), progname);
			fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
			exit(1);
		case 1:
			dbname = argv[optind];
			break;
		default:
			fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
					progname, argv[optind + 1]);
			fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
			exit(1);
	}

	if (interactive)
	{
		printf(_("Database \"%s\" will be permanently removed.\n"), dbname);
		if (!yesno_prompt("Are you sure?"))
			exit(0);
	}
//.........这里部分代码省略.........

int
main(int argc, char **argv)
{
	ConfigData *configdata;
	size_t		configdata_len;
	char		my_exec_path[MAXPGPATH];
	int			i;
	int			j;

	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_config"));

	progname = get_progname(argv[0]);

	/* check for --help */
	for (i = 1; i < argc; i++)
	{
		if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-?") == 0)
		{
			help();
			exit(0);
		}
	}

	if (find_my_exec(argv[0], my_exec_path) < 0)
	{
		fprintf(stderr, _("%s: could not find own program executable\n"), progname);
		exit(1);
	}

	configdata = get_configdata(my_exec_path, &configdata_len);
	/* no arguments -> print everything */
	if (argc < 2)
	{
		for (i = 0; i < configdata_len; i++)
			printf("%s = %s\n", configdata[i].name, configdata[i].setting);
		exit(0);
	}

	/* otherwise print requested items */
	for (i = 1; i < argc; i++)
	{
		for (j = 0; info_items[j].switchname != NULL; j++)
		{
			if (strcmp(argv[i], info_items[j].switchname) == 0)
			{
				show_item(info_items[j].configname,
						  configdata, configdata_len);
				break;
			}
		}
		if (info_items[j].switchname == NULL)
		{
			fprintf(stderr, _("%s: invalid argument: %s\n"),
					progname, argv[i]);
			advice();
			exit(1);
		}
	}

	return 0;
}

int
main(int argc, char *argv[])
{
	static struct option long_options[] = {
		{"host", required_argument, NULL, 'h'},
		{"port", required_argument, NULL, 'p'},
		{"username", required_argument, NULL, 'U'},
		{"no-password", no_argument, NULL, 'w'},
		{"password", no_argument, NULL, 'W'},
		{"echo", no_argument, NULL, 'e'},
		{"quiet", no_argument, NULL, 'q'},
		{"dbname", required_argument, NULL, 'd'},
		{"analyze", no_argument, NULL, 'z'},
		{"analyze-only", no_argument, NULL, 'Z'},
		{"freeze", no_argument, NULL, 'F'},
		{"all", no_argument, NULL, 'a'},
		{"table", required_argument, NULL, 't'},
		{"full", no_argument, NULL, 'f'},
		{"verbose", no_argument, NULL, 'v'},
		{"jobs", required_argument, NULL, 'j'},
		{"maintenance-db", required_argument, NULL, 2},
		{"analyze-in-stages", no_argument, NULL, 3},
		{NULL, 0, NULL, 0}
	};

	const char *progname;
	int			optindex;
	int			c;
	const char *dbname = NULL;
	const char *maintenance_db = NULL;
	char	   *host = NULL;
	char	   *port = NULL;
	char	   *username = NULL;
	enum trivalue prompt_password = TRI_DEFAULT;
	bool		echo = false;
	bool		quiet = false;
	vacuumingOptions vacopts;
	bool		analyze_in_stages = false;
	bool		alldb = false;
	SimpleStringList tables = {NULL, NULL};
	int			concurrentCons = 1;
	int			tbl_count = 0;

	/* initialize options to all false */
	memset(&vacopts, 0, sizeof(vacopts));

	progname = get_progname(argv[0]);

	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));

	handle_help_version_opts(argc, argv, "vacuumdb", help);

	while ((c = getopt_long(argc, argv, "h:p:U:wWeqd:zZFat:fvj:", long_options, &optindex)) != -1)
	{
		switch (c)
		{
			case 'h':
				host = pg_strdup(optarg);
				break;
			case 'p':
				port = pg_strdup(optarg);
				break;
			case 'U':
				username = pg_strdup(optarg);
				break;
			case 'w':
				prompt_password = TRI_NO;
				break;
			case 'W':
				prompt_password = TRI_YES;
				break;
			case 'e':
				echo = true;
				break;
			case 'q':
				quiet = true;
				break;
			case 'd':
				dbname = pg_strdup(optarg);
				break;
			case 'z':
				vacopts.and_analyze = true;
				break;
			case 'Z':
				vacopts.analyze_only = true;
				break;
			case 'F':
				vacopts.freeze = true;
				break;
			case 'a':
				alldb = true;
				break;
			case 't':
				{
					simple_string_list_append(&tables, optarg);
					tbl_count++;
					break;
				}
			case 'f':
				vacopts.full = true;
//.........这里部分代码省略.........

char *
libpq_ngettext(const char *msgid, const char *msgid_plural, unsigned long n)
{
    libpq_binddomain();
    return dngettext(PG_TEXTDOMAIN("libpq"), msgid, msgid_plural, n);
}

int
main(int argc, char *argv[])
{
	int			c;
	bool		force = false;
	bool		noupdate = false;
	uint32		set_xid_epoch = (uint32) -1;
	TransactionId set_xid = 0;
	Oid			set_oid = 0;
	MultiXactId set_mxid = 0;
	MultiXactOffset set_mxoff = (MultiXactOffset) -1;
	uint32		minXlogTli = 0,
				minXlogId = 0,
				minXlogSeg = 0;
	char	   *endptr;
	char	   *endptr2;
	char	   *endptr3;
	char	   *DataDir;
	int			fd;
	char		path[MAXPGPATH];

	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_resetxlog"));

	progname = get_progname(argv[0]);

	if (argc > 1)
	{
		if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
		{
			usage();
			exit(0);
		}
		if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
		{
			puts("pg_resetxlog (Greenplum Database) " PG_VERSION);
			exit(0);
		}
		if (strcmp(argv[1], "--gp-version") == 0)
		{
			puts("pg_resetxlog (Greenplum Database) " GP_VERSION);
			exit(0);
		}
	}


	while ((c = getopt(argc, argv, "fl:m:no:O:x:e:")) != -1)
	{
		switch (c)
		{
			case 'f':
				force = true;
				break;

			case 'n':
				noupdate = true;
				break;

			case 'e':
				set_xid_epoch = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != '\0')
				{
					fprintf(stderr, _("%s: invalid argument for option -e\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
				if (set_xid_epoch == -1)
				{
					fprintf(stderr, _("%s: transaction ID epoch (-e) must not be -1\n"), progname);
					exit(1);
				}
				break;

			case 'x':
				set_xid = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != '\0')
				{
					fprintf(stderr, _("%s: invalid argument for option -x\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
				if (set_xid == 0)
				{
					fprintf(stderr, _("%s: transaction ID (-x) must not be 0\n"), progname);
					exit(1);
				}
				break;

			case 'o':
				set_oid = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != '\0')
				{
					fprintf(stderr, _("%s: invalid argument for option -o\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
				if (set_oid == 0)
				{
					fprintf(stderr, _("%s: OID (-o) must not be 0\n"), progname);
					exit(1);
				}
//.........这里部分代码省略.........

int
main(int argc, char *argv[])
{
	static struct option long_options[] = {
		{"host", required_argument, NULL, 'h'},
		{"port", required_argument, NULL, 'p'},
		{"username", required_argument, NULL, 'U'},
		{"no-password", no_argument, NULL, 'w'},
		{"password", no_argument, NULL, 'W'},
		{"echo", no_argument, NULL, 'e'},
		{"quiet", no_argument, NULL, 'q'},
		{"dbname", required_argument, NULL, 'd'},
		{"analyze", no_argument, NULL, 'z'},
		{"analyze-only", no_argument, NULL, 'Z'},
		{"freeze", no_argument, NULL, 'F'},
		{"all", no_argument, NULL, 'a'},
		{"table", required_argument, NULL, 't'},
		{"full", no_argument, NULL, 'f'},
		{"verbose", no_argument, NULL, 'v'},
		{"maintenance-db", required_argument, NULL, 2},
		{NULL, 0, NULL, 0}
	};

	const char *progname;
	int			optindex;
	int			c;

	const char *dbname = NULL;
	const char *maintenance_db = NULL;
	char	   *host = NULL;
	char	   *port = NULL;
	char	   *username = NULL;
	enum trivalue prompt_password = TRI_DEFAULT;
	bool		echo = false;
	bool		quiet = false;
	bool		and_analyze = false;
	bool		analyze_only = false;
	bool		freeze = false;
	bool		alldb = false;
	char	   *table = NULL;
	bool		full = false;
	bool		verbose = false;

	progname = get_progname(argv[0]);
	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));

	handle_help_version_opts(argc, argv, "vacuumdb", help);

	while ((c = getopt_long(argc, argv, "h:p:U:wWeqd:zZFat:fv", long_options, &optindex)) != -1)
	{
		switch (c)
		{
			case 'h':
				host = pg_strdup(optarg);
				break;
			case 'p':
				port = pg_strdup(optarg);
				break;
			case 'U':
				username = pg_strdup(optarg);
				break;
			case 'w':
				prompt_password = TRI_NO;
				break;
			case 'W':
				prompt_password = TRI_YES;
				break;
			case 'e':
				echo = true;
				break;
			case 'q':
				quiet = true;
				break;
			case 'd':
				dbname = pg_strdup(optarg);
				break;
			case 'z':
				and_analyze = true;
				break;
			case 'Z':
				analyze_only = true;
				break;
			case 'F':
				freeze = true;
				break;
			case 'a':
				alldb = true;
				break;
			case 't':
				table = pg_strdup(optarg);
				break;
			case 'f':
				full = true;
				break;
			case 'v':
				verbose = true;
				break;
			case 2:
				maintenance_db = pg_strdup(optarg);
				break;
//.........这里部分代码省略.........

int
main(int argc, char *argv[])
{
	int			c;
	bool		force = false;
	bool		noupdate = false;
	MultiXactId set_oldestmxid = 0;
	char	   *endptr;
	char	   *endptr2;
	char	   *DataDir = NULL;
	int			fd;

	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_resetxlog"));

	progname = get_progname(argv[0]);

	if (argc > 1)
	{
		if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
		{
			usage();
			exit(0);
		}
		if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
		{
			puts("pg_resetxlog (PostgreSQL) " PG_VERSION);
			exit(0);
		}
	}


	while ((c = getopt(argc, argv, "D:fl:m:no:O:x:e:")) != -1)
	{
		switch (c)
		{
			case 'D':
				DataDir = optarg;
				break;

			case 'f':
				force = true;
				break;

			case 'n':
				noupdate = true;
				break;

			case 'e':
				set_xid_epoch = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != '\0')
				{
					fprintf(stderr, _("%s: invalid argument for option -e\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
				if (set_xid_epoch == -1)
				{
					fprintf(stderr, _("%s: transaction ID epoch (-e) must not be -1\n"), progname);
					exit(1);
				}
				break;

			case 'x':
				set_xid = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != '\0')
				{
					fprintf(stderr, _("%s: invalid argument for option -x\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
				if (set_xid == 0)
				{
					fprintf(stderr, _("%s: transaction ID (-x) must not be 0\n"), progname);
					exit(1);
				}
				break;

			case 'o':
				set_oid = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != '\0')
				{
					fprintf(stderr, _("%s: invalid argument for option -o\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
				if (set_oid == 0)
				{
					fprintf(stderr, _("%s: OID (-o) must not be 0\n"), progname);
					exit(1);
				}
				break;

			case 'm':
				set_mxid = strtoul(optarg, &endptr, 0);
				if (endptr == optarg || *endptr != ',')
				{
					fprintf(stderr, _("%s: invalid argument for option -m\n"), progname);
					fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
					exit(1);
				}
//.........这里部分代码省略.........

int
main(int argc, char *argv[])
{
	static struct option long_options[] = {
		{"list", no_argument, NULL, 'l'},
		{"host", required_argument, NULL, 'h'},
		{"port", required_argument, NULL, 'p'},
		{"username", required_argument, NULL, 'U'},
		{"no-password", no_argument, NULL, 'w'},
		{"password", no_argument, NULL, 'W'},
		{"dbname", required_argument, NULL, 'd'},
		{"echo", no_argument, NULL, 'e'},
		{NULL, 0, NULL, 0}
	};

	const char *progname;
	int			optindex;
	int			c;

	bool		listlangs = false;
	const char *dbname = NULL;
	char	   *host = NULL;
	char	   *port = NULL;
	char	   *username = NULL;
	enum trivalue prompt_password = TRI_DEFAULT;
	bool		echo = false;
	char	   *langname = NULL;

	char	   *p;

	PQExpBufferData sql;

	PGconn	   *conn;
	PGresult   *result;

	progname = get_progname(argv[0]);
	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));

	handle_help_version_opts(argc, argv, "createlang", help);

	while ((c = getopt_long(argc, argv, "lh:p:U:wWd:e", long_options, &optindex)) != -1)
	{
		switch (c)
		{
			case 'l':
				listlangs = true;
				break;
			case 'h':
				host = pg_strdup(optarg);
				break;
			case 'p':
				port = pg_strdup(optarg);
				break;
			case 'U':
				username = pg_strdup(optarg);
				break;
			case 'w':
				prompt_password = TRI_NO;
				break;
			case 'W':
				prompt_password = TRI_YES;
				break;
			case 'd':
				dbname = pg_strdup(optarg);
				break;
			case 'e':
				echo = true;
				break;
			default:
				fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
				exit(1);
		}
	}

	/*
	 * We set dbname from positional arguments if it is not already set by
	 * option arguments -d. If not doing listlangs, positional dbname must
	 * follow positional langname.
	 */

	if (argc - optind > 0)
	{
		if (listlangs)
		{
			if (dbname == NULL)
				dbname = argv[optind++];
		}
		else
		{
			langname = argv[optind++];
			if (argc - optind > 0 && dbname == NULL)
				dbname = argv[optind++];
		}
	}

	if (argc - optind > 0)
	{
		fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
				progname, argv[optind]);
		fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
//.........这里部分代码省略.........