2 * Copyright (c) 2008 Nicira Networks.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "command-line.h"
24 /* Given the GNU-style long options in 'options', returns a string that may be
25 * passed to getopt() with the corresponding short options. The caller is
26 * responsible for freeing the string. */
28 long_options_to_short_options(const struct option options[])
30 char short_options[UCHAR_MAX * 3 + 1];
31 char *p = short_options;
33 for (; options->name; options++) {
34 const struct option *o = options;
35 if (o->flag == NULL && o->val > 0 && o->val <= UCHAR_MAX) {
37 if (o->has_arg == required_argument) {
39 } else if (o->has_arg == optional_argument) {
47 return xstrdup(short_options);