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/*
* gen_uuid.c --- generate a DCE-compatible uuid
*
* Copyright (C) 1999, Andreas Dilger and Theodore Ts'o
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include "uuid.h"
#include "nls.h"
#include "c.h"
#include "closestream.h"
static void __attribute__((__noreturn__)) usage(void)
{
FILE *out = stdout;
fputs(USAGE_HEADER, out);
fprintf(out,
_(" %s [options]\n"), program_invocation_short_name);
fputs(USAGE_SEPARATOR, out);
fputs(_("Create a new UUID value.\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(_(" -r, --random generate random-based uuid\n"), out);
fputs(_(" -t, --time generate time-based uuid\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("uuidgen(1)"));
exit(EXIT_SUCCESS);
}
int
main (int argc, char *argv[])
{
int c;
int do_type = 0;
char str[37];
uuid_t uu;
static const struct option longopts[] = {
{"random", no_argument, NULL, 'r'},
{"time", no_argument, NULL, 't'},
{"version", no_argument, NULL, 'V'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while ((c = getopt_long(argc, argv, "rtVh", longopts, NULL)) != -1)
switch (c) {
case 't':
do_type = UUID_TYPE_DCE_TIME;
break;
case 'r':
do_type = UUID_TYPE_DCE_RANDOM;
break;
case 'V':
printf(UTIL_LINUX_VERSION);
return EXIT_SUCCESS;
case 'h':
usage();
default:
errtryhelp(EXIT_FAILURE);
}
switch (do_type) {
case UUID_TYPE_DCE_TIME:
uuid_generate_time(uu);
break;
case UUID_TYPE_DCE_RANDOM:
uuid_generate_random(uu);
break;
default:
uuid_generate(uu);
break;
}
uuid_unparse(uu, str);
printf("%s\n", str);
return EXIT_SUCCESS;
}
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