102 lines
3.4 KiB
C
102 lines
3.4 KiB
C
/* Please use this file as a template when introducing new command to
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* util-linux package.
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* -- remove above */
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/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Copyright (c) 20nn Example Commercial, Inc
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* Written by Your Name <you@example.com>
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*
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* fixme-command-name - purpose of it
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*/
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#include <getopt.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "c.h"
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#include "closestream.h"
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#include "nls.h"
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/*
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* FIXME: remove this comment.
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* Other usage() constants that are not demonstrated below:
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* USAGE_FUNCTIONS USAGE_COMMANDS USAGE_COLUMNS
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*/
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static void __attribute__((__noreturn__)) usage(void)
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{
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fputs(USAGE_HEADER, stdout);
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fprintf(stdout, _(" %s [options] file...\n"), program_invocation_short_name);
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fputs(USAGE_SEPARATOR, stdout);
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fputsln(_("Short program description."), stdout);
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fputs(USAGE_OPTIONS, stdout);
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fputsln(_(" -n, --no-argument option does not use argument"), stdout);
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fputsln(_(" --optional[=<arg>] option argument is optional"), stdout);
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fputsln(_(" -r, --required <arg> option requires an argument"), stdout);
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fputsln(_(" -z no long option"), stdout);
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fputsln(_(" --xyzzy a long option only"), stdout);
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fputsln(_(" -e, --extremely-long-long-option\n"
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" use next line for description when needed"), stdout);
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fputsln(_(" -l, --long-explanation an example of very verbose, and chatty option\n"
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" description on two, or multiple lines, where the\n"
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" consecutive lines are intended by two spaces"), stdout);
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fputsln(_(" -f, --foobar next option description resets indent"), stdout);
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fputs(USAGE_SEPARATOR, stdout);
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fprintf(stdout, USAGE_HELP_OPTIONS(25)); /* char offset to align option descriptions */
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fprintf(stdout, USAGE_MAN_TAIL("fixme-command-name(1)"));
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exit(EXIT_SUCCESS);
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}
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int main(int argc, char **argv)
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{
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int c;
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enum {
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OPT_XYZZY = CHAR_MAX + 1,
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OPT_OPTIONAL /* see howto-man-page.txt about short option */
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};
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static const struct option longopts[] = {
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{ "no-argument", no_argument, NULL, 'n' },
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{ "optional", optional_argument, NULL, OPT_OPTIONAL },
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{ "required", required_argument, NULL, 'r' },
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{ "extremely-long-long-option", no_argument, NULL, 'e' },
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{ "xyzzy", no_argument, NULL, OPT_XYZZY },
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{ "long-explanation", no_argument, NULL, 'l' },
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{ "foobar", no_argument, NULL, 'f' },
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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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close_stdout_atexit();
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while ((c = getopt_long(argc, argv, "nr:zelfVh", longopts, NULL)) != -1)
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switch (c) {
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case 'n':
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case OPT_OPTIONAL:
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case 'r':
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case 'z':
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case OPT_XYZZY:
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case 'e':
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case 'l':
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case 'f':
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break;
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case 'V':
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print_version(EXIT_SUCCESS);
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case 'h':
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usage();
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default:
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errtryhelp(EXIT_FAILURE);
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}
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return EXIT_SUCCESS;
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}
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