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/*
* Copyright 2007-2008 Roy Marples <roy@marples.name>
* All rights reserved
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if lint
# define _noreturn
#endif
#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
# define _noreturn __attribute__ ((__noreturn__))
#else
# define _noreturn
#endif
_noreturn static void usage(int exit_status)
{
const char * const has_arg[] = { "", "<arg>", "[arg]" };
int i;
int len;
char *lo;
char *p;
char *token;
#ifdef usagestring
printf(usagestring);
#else
printf("Usage: %s [options] ", applet);
#endif
#ifdef extraopts
printf(extraopts);
#endif
printf("\n\nOptions: [" getoptstring "]\n");
for (i = 0; longopts[i].name; ++i) {
len = printf(" -%c, --%s %s", longopts[i].val, longopts[i].name,
has_arg[longopts[i].has_arg]);
lo = p = xstrdup(longopts_help[i]);
while ((token = strsep(&p, "\n"))) {
while (++len < 37)
printf(" ");
puts(token);
len = 0;
}
free(lo);
}
exit(exit_status);
}
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