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/*
* Copyright (c) 2008 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.
*
* 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.
*/
#include <config.h>
#include "command-line.h"
#include <getopt.h>
#include <limits.h>
#include "util.h"
#include "vlog.h"
/* Given the GNU-style long options in 'options', returns a string that may be
* passed to getopt() with the corresponding short options. The caller is
* responsible for freeing the string. */
char *
long_options_to_short_options(const struct option options[])
{
char short_options[UCHAR_MAX * 3 + 1];
char *p = short_options;
for (; options->name; options++) {
const struct option *o = options;
if (o->flag == NULL && o->val > 0 && o->val <= UCHAR_MAX) {
*p++ = o->val;
if (o->has_arg == required_argument) {
*p++ = ':';
} else if (o->has_arg == optional_argument) {
*p++ = ':';
*p++ = ':';
}
}
}
*p = '\0';
return xstrdup(short_options);
}
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