103 lines
2.0 KiB
C
103 lines
2.0 KiB
C
/*
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* gen_uuid.c --- generate a DCE-compatible uuid
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*
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* Copyright (C) 1999, Andreas Dilger and Theodore Ts'o
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <stdio.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#else
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extern int getopt(int argc, char * const argv[], const char *optstring);
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extern char *optarg;
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extern int optind;
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#endif
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#include "uuid.h"
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#include "nls.h"
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#include "c.h"
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#include "closestream.h"
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#define DO_TYPE_TIME 1
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#define DO_TYPE_RANDOM 2
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static void __attribute__ ((__noreturn__)) usage(FILE * out)
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{
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fputs(_("\nUsage:\n"), out);
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fprintf(out,
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_(" %s [options]\n"), program_invocation_short_name);
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fputs(_("\nOptions:\n"), out);
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fputs(_(" -r, --random generate random-based uuid\n"
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" -t, --time generate time-based uuid\n"
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" -V, --version output version information and exit\n"
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" -h, --help display this help and exit\n\n"), out);
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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int
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main (int argc, char *argv[])
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{
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int c;
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int do_type = 0;
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char str[37];
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uuid_t uu;
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static const struct option longopts[] = {
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{"random", no_argument, NULL, 'r'},
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{"time", no_argument, NULL, 't'},
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{"version", no_argument, NULL, 'V'},
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{"help", no_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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atexit(close_stdout);
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while ((c = getopt_long(argc, argv, "rtVh", longopts, NULL)) != -1)
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switch (c) {
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case 't':
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do_type = DO_TYPE_TIME;
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break;
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case 'r':
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do_type = DO_TYPE_RANDOM;
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break;
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case 'V':
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printf(UTIL_LINUX_VERSION);
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return EXIT_SUCCESS;
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case 'h':
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usage(stdout);
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default:
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usage(stderr);
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}
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switch (do_type) {
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case DO_TYPE_TIME:
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uuid_generate_time(uu);
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break;
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case DO_TYPE_RANDOM:
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uuid_generate_random(uu);
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break;
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default:
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uuid_generate(uu);
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break;
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}
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uuid_unparse(uu, str);
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printf("%s\n", str);
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return EXIT_SUCCESS;
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}
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