/src/bin/scripts/dropdb.c
C | 171 lines | 135 code | 23 blank | 13 comment | 13 complexity | c4ab164ed25891c953cb8b7660a220b9 MD5 | raw file
Possible License(s): AGPL-3.0
- /*-------------------------------------------------------------------------
- *
- * dropdb
- *
- * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * src/bin/scripts/dropdb.c
- *
- *-------------------------------------------------------------------------
- */
- #include "postgres_fe.h"
- #include "common.h"
- #include "dumputils.h"
- static void help(const char *progname);
- 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);
- }
- initPQExpBuffer(&sql);
- appendPQExpBuffer(&sql, "DROP DATABASE %s%s;",
- (if_exists ? "IF EXISTS " : ""), fmtId(dbname));
- /* Avoid trying to drop postgres db while we are connected to it. */
- if (maintenance_db == NULL && strcmp(dbname, "postgres") == 0)
- maintenance_db = "template1";
- conn = connectMaintenanceDatabase(maintenance_db,
- host, port, username, prompt_password, progname);
- if (echo)
- printf("%s\n", sql.data);
- result = PQexec(conn, sql.data);
- if (PQresultStatus(result) != PGRES_COMMAND_OK)
- {
- fprintf(stderr, _("%s: database removal failed: %s"),
- progname, PQerrorMessage(conn));
- PQfinish(conn);
- exit(1);
- }
- PQclear(result);
- PQfinish(conn);
- exit(0);
- }
- static void
- help(const char *progname)
- {
- printf(_("%s removes a PostgreSQL database.\n\n"), progname);
- printf(_("Usage:\n"));
- printf(_(" %s [OPTION]... DBNAME\n"), progname);
- printf(_("\nOptions:\n"));
- printf(_(" -e, --echo show the commands being sent to the server\n"));
- printf(_(" -i, --interactive prompt before deleting anything\n"));
- printf(_(" -V, --version output version information, then exit\n"));
- printf(_(" --if-exists don't report error if database doesn't exist\n"));
- printf(_(" -?, --help show this help, then exit\n"));
- printf(_("\nConnection options:\n"));
- printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
- printf(_(" -p, --port=PORT database server port\n"));
- printf(_(" -U, --username=USERNAME user name to connect as\n"));
- printf(_(" -w, --no-password never prompt for password\n"));
- printf(_(" -W, --password force password prompt\n"));
- printf(_(" --maintenance-db=DBNAME alternate maintenance database\n"));
- printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
- }