2 * Copyright (c) 2008 Nicira Networks.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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);