1 /* Copyright (C) 2007 Board of Trustees, Leland Stanford Jr. University.
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 #include "command-line.h"
28 /* Given the GNU-style long options in 'options', returns a string that may be
29 * passed to getopt() with the corresponding short options. The caller is
30 * responsible for freeing the string. */
32 long_options_to_short_options(const struct option options[])
34 char short_options[UCHAR_MAX * 3 + 1];
35 char *p = short_options;
37 for (; options->name; options++) {
38 const struct option *o = options;
39 if (o->flag == NULL && o->val > 0 && o->val <= UCHAR_MAX) {
41 if (o->has_arg == required_argument) {
43 } else if (o->has_arg == optional_argument) {
51 return xstrdup(short_options);