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Include getopt.h.

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(long_opts): New constant.
(usage): New function.
(main): Implement --help and --version.
Output usage message if arguments are bad.
This commit is contained in:
Paul Eggert
1999-11-07 21:06:38 +00:00
parent f87e585c51
commit 02519e5575
1 changed files with 55 additions and 6 deletions
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src/rmt.c
+55 -6
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@@ -32,6 +32,7 @@
#include "system.h"
#include "safe-read.h"
#include <getopt.h>
#include <sys/socket.h>
#ifndef EXIT_FAILURE
@@ -252,6 +253,34 @@ decode_oflag (char const *oflag_string)
return symbolic_oflag;
}
static struct option const long_opts[] =
{
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},
{0, 0, 0, 0}
};
static void
usage (int status)
{
if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("\
Usage: %s [OPTION]\n\
Manipulate a tape drive, accepting commands from a remote process.\n\
\n\
--version Output version info.\n\
--help Output this help.\n"),
program_name);
fputs (_("\nReport bugs to <bug-tar@gnu.org>.\n"), stdout);
}
exit (status);
}
/*---.
| ? |
`---*/
@@ -271,12 +300,32 @@ main (int argc, char *const *argv)
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
/* FIXME: Implement --help and --version as for any other GNU program. */
argc--, argv++;
if (argc > 0)
switch (getopt_long (argc, argv, "", long_opts, NULL))
{
debug_file = fopen (*argv, "w");
default:
usage (EXIT_FAILURE);
case 'h':
usage (EXIT_SUCCESS);
case 'v':
printf ("rmt (GNU %s) %s\n%s\n%s\n", PACKAGE, VERSION,
"Copyright 1999 Free Software Foundation, Inc.",
_("\
This program comes with NO WARRANTY, to the extent permitted by law.\n\
You may redistribute it under the terms of the GNU General Public License;\n\
see the file named COPYING for details."));
return EXIT_SUCCESS;
case -1:
break;
}
if (optind < argc)
{
if (optind != argc - 1)
usage (EXIT_FAILURE);
debug_file = fopen (argv[optind], "w");
if (debug_file == 0)
{
report_numbered_error (errno);
@@ -289,7 +338,7 @@ top:
errno = 0; /* FIXME: errno should be read-only */
status = 0;
if (safe_read (STDIN_FILENO, &command, 1) != 1)
exit (EXIT_SUCCESS);
return EXIT_SUCCESS;
switch (command)
{