| /* Please use this file as a template when introducing new command to |
| * util-linux package. |
| * -- remove above */ |
| /* |
| * fixme-command-name - purpose of it |
| * |
| * Copyright (c) 20nn Example Commercial, Inc |
| * Written by Your Name <you@example.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include <getopt.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| #include "c.h" |
| #include "closestream.h" |
| #include "nls.h" |
| |
| /* |
| * FIXME: remove this comment. |
| * Other usage() constants that are not demonstrated below: |
| * USAGE_FUNCTIONS USAGE_COMMANDS USAGE_COLUMNS |
| */ |
| static void __attribute__((__noreturn__)) usage(void) |
| { |
| fputs(USAGE_HEADER, stdout); |
| printf(_(" %s [options] file...\n"), program_invocation_short_name); |
| |
| fputs(USAGE_SEPARATOR, stdout); |
| puts(_("Short program description.")); |
| |
| fputs(USAGE_OPTIONS, stdout); |
| puts(_(" -n, --no-argument option does not use argument")); |
| puts(_(" --optional[=<arg>] option argument is optional")); |
| puts(_(" -r, --required <arg> option requires an argument")); |
| puts(_(" -z no long option")); |
| puts(_(" --xyzzy a long option only")); |
| puts(_(" -e, --extremely-long-long-option\n" |
| " use next line for description when needed")); |
| puts(_(" -l, --long-explanation an example of very verbose, and chatty option\n" |
| " description on two, or multiple lines, where the\n" |
| " consecutive lines are intended by two spaces")); |
| puts(_(" -f, --foobar next option description resets indent")); |
| fputs(USAGE_SEPARATOR, stdout); |
| printf(USAGE_HELP_OPTIONS(25)); /* char offset to align option descriptions */ |
| printf(USAGE_MAN_TAIL("fixme-command-name(1)")); |
| exit(EXIT_SUCCESS); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int c; |
| |
| enum { |
| OPT_XYZZY = CHAR_MAX + 1, |
| OPT_OPTIONAL /* see howto-man-page.txt about short option */ |
| }; |
| static const struct option longopts[] = { |
| { "no-argument", no_argument, NULL, 'n' }, |
| { "optional", optional_argument, NULL, OPT_OPTIONAL }, |
| { "required", required_argument, NULL, 'r' }, |
| { "extremely-long-long-option", no_argument, NULL, 'e' }, |
| { "xyzzy", no_argument, NULL, OPT_XYZZY }, |
| { "long-explanation", no_argument, NULL, 'l' }, |
| { "foobar", no_argument, NULL, 'f' }, |
| { "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, "nr:zelfVh", longopts, NULL)) != -1) |
| switch (c) { |
| case 'n': |
| case OPT_OPTIONAL: |
| case 'r': |
| case 'z': |
| case OPT_XYZZY: |
| case 'e': |
| case 'l': |
| case 'f': |
| break; |
| case 'V': |
| printf(UTIL_LINUX_VERSION); |
| return EXIT_SUCCESS; |
| case 'h': |
| usage(); |
| default: |
| errtryhelp(EXIT_FAILURE); |
| } |
| |
| return EXIT_SUCCESS; |
| } |