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/* dirname -- strip suffix from file name
Copyright (C) 1990-1997, 1999-2002, 2004-2010 Free Software Foundation, Inc.
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, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>. */
/* Written by David MacKenzie and Jim Meyering. */
#include <config.h>
#include <getopt.h>
#include <stdio.h>
#include <sys/types.h>
#include "system.h"
#include "long-options.h"
#include "error.h"
#include "quote.h"
/* The official name of this program (e.g., no `g' prefix). */
#define PROGRAM_NAME "dirname"
#define AUTHORS \
proper_name ("David MacKenzie"), \
proper_name ("Jim Meyering")
void
usage (int status)
{
if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("\
Usage: %s NAME\n\
or: %s OPTION\n\
"),
program_name, program_name);
fputs (_("\
Output NAME with its last non-slash component and trailing slashes removed;\n\
if NAME contains no /'s, output `.' (meaning the current directory).\n\
\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
printf (_("\
\n\
Examples:\n\
%s /usr/bin/ Output \"/usr\".\n\
%s stdio.h Output \".\".\n\
"),
program_name, program_name);
emit_ancillary_info ();
}
exit (status);
}
int
main (int argc, char **argv)
{
static char const dot = '.';
char const *result;
size_t len;
initialize_main (&argc, &argv);
set_program_name (argv[0]);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, Version,
usage, AUTHORS, (char const *) NULL);
if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
usage (EXIT_FAILURE);
if (argc < optind + 1)
{
error (0, 0, _("missing operand"));
usage (EXIT_FAILURE);
}
if (optind + 1 < argc)
{
error (0, 0, _("extra operand %s"), quote (argv[optind + 1]));
usage (EXIT_FAILURE);
}
result = argv[optind];
len = dir_len (result);
if (! len)
{
result = ˙
len = 1;
}
fwrite (result, 1, len, stdout);
putchar ('\n');
exit (EXIT_SUCCESS);
}
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