Reimplement create and drop scripts in C, to reduce repetitive

connections, increase robustness, add NLS, and prepare for Windows port.
(vacuumdb and clusterdb will follow later.)

1 files changed, 156 insertions, 0 deletions

diff --git a/src/bin/scripts/dropdb.c b/src/bin/scripts/dropdb.c
new file mode 100644
index 00000000000..784c7c252da
--- /dev/null
+++ b/src/bin/scripts/dropdb.c
@@ -0,0 +1,156 @@
+/*-------------------------------------------------------------------------
+ *
+ * dropdb
+ *
+ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * $Header: /cvsroot/pgsql/src/bin/scripts/dropdb.c,v 1.1 2003/03/18 22:19:46 petere Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres_fe.h"
+#include "common.h"
+#include "dumputils.h"
+
+
+static void help(const char *progname);
+
+
+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'},
+		{"password", no_argument, NULL, 'W'},
+		{"echo", no_argument, NULL, 'e'},
+		{"quiet", no_argument, NULL, 'q'},
+		{"interactive", no_argument, NULL, 'i'},
+		{NULL, 0, NULL, 0}
+	};
+
+	char	   *progname;
+	int			optindex;
+	int			c;
+
+	char	   *dbname = NULL;
+	char	   *host = NULL;
+	char	   *port = NULL;
+	char	   *username = NULL;
+	bool		password = false;
+	bool		echo = false;
+	bool		quiet = false;
+	bool		interactive = false;
+
+	PQExpBufferData sql;
+
+	PGconn	   *conn;
+	PGresult   *result;
+
+	progname = get_progname(argv[0]);
+	init_nls();
+	handle_help_version_opts(argc, argv, "dropdb", help);
+
+	while ((c = getopt_long(argc, argv, "h:p:U:Weqi", long_options, &optindex)) != -1)
+	{
+		switch (c)
+		{
+			case 'h':
+				host = optarg;
+				break;
+			case 'p':
+				port = optarg;
+				break;
+			case 'U':
+				username = optarg;
+				break;
+			case 'W':
+				password = true;
+				break;
+			case 'e':
+				echo = true;
+				break;
+			case 'q':
+				quiet = true;
+				break;
+			case 'i':
+				interactive = true;
+				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)
+	{
+		char	   *reply;
+
+		printf(_("Database \"%s\" will be permanently deleted.\n"), dbname);
+		reply = simple_prompt("Are you sure? (y/n) ", 1, true);
+		if (reply[0] != 'y' && reply[0] != 'Y')
+			exit(0);
+	}
+
+	initPQExpBuffer(&sql);
+
+	appendPQExpBuffer(&sql, "SET autocommit TO on;\nDROP DATABASE %s;\n",
+					  fmtId(dbname));
+
+	conn = connectDatabase("template1", host, port, username, password, progname);
+
+	if (echo)
+		printf("%s", 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);
+	}
+
+	PQfinish(conn);
+	if (!quiet)
+		puts("DROP DATABASE");
+	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(_("  -q, --quiet               don't write any messages\n"));
+	printf(_("  -h, --host=HOSTNAME       database server host\n"));
+	printf(_("  -p, --port=PORT           database server port\n"));
+	printf(_("  -U, --username=USERNAME   user name to connect as\n"));
+	printf(_("  -W, --password            prompt for password\n"));
+	printf(_("  --help                    show this help, then exit\n"));
+	printf(_("  --version                 output version information, then exit\n"));
+	printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
+}