Mercurial > gnulib
annotate lib/long-options.c @ 1719:3a52df5cf257
(_): Define it.
(parse_long_options): Accept new parameter, authors, and print it.
author | Jim Meyering <jim@meyering.net> |
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date | Thu, 04 Mar 1999 05:08:01 +0000 |
parents | 07db14dfcbca |
children | 565c8d2d7914 |
rev | line source |
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317 | 1 /* Utility to accept --help and --version options as unobtrusively as possible. |
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2 Copyright (C) 1993, 1994, 1998, 1999 Free Software Foundation, Inc. |
317 | 3 |
4 This program is free software; you can redistribute it and/or modify | |
5 it under the terms of the GNU General Public License as published by | |
6 the Free Software Foundation; either version 2, or (at your option) | |
7 any later version. | |
8 | |
9 This program is distributed in the hope that it will be useful, | |
10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 GNU General Public License for more details. | |
13 | |
14 You should have received a copy of the GNU General Public License | |
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15 along with this program; if not, write to the Free Software Foundation, |
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16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
317 | 17 |
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18 /* Written by Jim Meyering. */ |
317 | 19 |
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20 #if HAVE_CONFIG_H |
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21 # include <config.h> |
317 | 22 #endif |
23 | |
24 #include <stdio.h> | |
25 #include <getopt.h> | |
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26 #include "closeout.h" |
317 | 27 #include "long-options.h" |
28 | |
1719 | 29 #if ENABLE_NLS |
30 # include <libintl.h> | |
31 # define _(Text) gettext (Text) | |
32 #else | |
33 # define _(Text) Text | |
34 #endif | |
35 | |
317 | 36 static struct option const long_options[] = |
37 { | |
38 {"help", no_argument, 0, 'h'}, | |
39 {"version", no_argument, 0, 'v'}, | |
40 {0, 0, 0, 0} | |
41 }; | |
42 | |
43 /* Process long options --help and --version, but only if argc == 2. | |
44 Be careful not to gobble up `--'. */ | |
45 | |
46 void | |
1719 | 47 parse_long_options (int argc, |
48 char **argv, | |
49 const char *command_name, | |
50 const char *package, | |
51 const char *version, | |
52 const char *authors, | |
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53 void (*usage_func)()) |
317 | 54 { |
55 int c; | |
56 int saved_opterr; | |
57 | |
58 saved_opterr = opterr; | |
59 | |
60 /* Don't print an error message for unrecognized options. */ | |
61 opterr = 0; | |
62 | |
63 if (argc == 2 | |
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64 && (c = getopt_long (argc, argv, "+", long_options, NULL)) != -1) |
317 | 65 { |
66 switch (c) | |
67 { | |
68 case 'h': | |
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69 (*usage_func) (0); |
317 | 70 |
71 case 'v': | |
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72 printf ("%s (%s) %s\n", command_name, package, version); |
1719 | 73 printf (_("Written by %s.\n"), authors); |
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74 close_stdout (); /* FIXME: output failure exit status |
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75 should be settable via an arg. */ |
317 | 76 exit (0); |
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77 |
317 | 78 default: |
79 /* Don't process any other long-named options. */ | |
80 break; | |
81 } | |
82 } | |
83 | |
84 /* Restore previous value. */ | |
85 opterr = saved_opterr; | |
86 | |
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87 /* Reset this to zero so that getopt internals get initialized from |
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88 the probably-new parameters when/if getopt is called later. */ |
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89 optind = 0; |
317 | 90 } |