/*
- * Copyright (c) 2008 Nicira Networks.
+ * Copyright (c) 2008, 2009 Nicira Networks.
*
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
*/
#include <config.h>
#include "command-line.h"
#include <getopt.h>
#include <limits.h>
+#include <stdlib.h>
#include "util.h"
#include "vlog.h"
return xstrdup(short_options);
}
+/* Runs the command designated by argv[0] within the command table specified by
+ * 'commands', which must be terminated by a command whose 'name' member is a
+ * null pointer.
+ *
+ * Command-line options should be stripped off, so that a typical invocation
+ * looks like "run_command(argc - optind, argv + optind, my_commands);". */
+void
+run_command(int argc, char *argv[], const struct command commands[])
+{
+ const struct command *p;
+
+ if (argc < 1) {
+ ovs_fatal(0, "missing command name; use --help for help");
+ }
+
+ for (p = commands; p->name != NULL; p++) {
+ if (!strcmp(p->name, argv[0])) {
+ int n_arg = argc - 1;
+ if (n_arg < p->min_args) {
+ ovs_fatal(0, "'%s' command requires at least %d arguments",
+ p->name, p->min_args);
+ } else if (n_arg > p->max_args) {
+ ovs_fatal(0, "'%s' command takes at most %d arguments",
+ p->name, p->max_args);
+ } else {
+ p->handler(argc, argv);
+ if (ferror(stdout)) {
+ ovs_fatal(0, "write to stdout failed");
+ }
+ if (ferror(stderr)) {
+ ovs_fatal(0, "write to stderr failed");
+ }
+ return;
+ }
+ }
+ }
+
+ ovs_fatal(0, "unknown command '%s'; use --help for help", argv[0]);
+}