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/* basename -- strip directory and suffix from filenames
Copyright (C) 90, 91, 92, 93, 94, 1995 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 2, 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Usage: basename name [suffix]
NAME is a pathname; SUFFIX is a suffix to strip from it.
basename /usr/foo/lossage/functions.l
=> functions.l
basename /usr/foo/lossage/functions.l .l
=> functions
basename functions.lisp p
=> functions.lis */
#include <config.h>
#include <stdio.h>
#include <sys/types.h>
#include "system.h"
#include "version.h"
#include "long-options.h"
#include "error.h"
char *basename __P ((char *));
void strip_trailing_slashes ();
static void remove_suffix __P ((register char *name, register char *suffix));
/* The name this program was run with. */
char *program_name;
static void
usage (int status)
{
if (status != 0)
fprintf (stderr, "Try `%s --help' for more information.\n",
program_name);
else
{
printf ("\
Usage: %s NAME [SUFFIX]\n\
or: %s OPTION\n\
",
program_name, program_name);
printf ("\
Print NAME with any leading directory components removed.\n\
If specified, also remove a trailing SUFFIX.\n\
\n\
--help display this help and exit\n\
--version output version information and exit\n\
");
}
exit (status);
}
void
main (int argc, char **argv)
{
char *name;
program_name = argv[0];
parse_long_options (argc, argv, "basename", version_string, usage);
if (argc == 1 || argc > 3)
{
error (0, 0, "too %s arguments", argc == 1 ? "few" : "many");
usage (1);
}
strip_trailing_slashes (argv[1]);
name = basename (argv[1]);
if (argc == 3)
remove_suffix (name, argv[2]);
puts (name);
exit (0);
}
/* Remove SUFFIX from the end of NAME if it is there, unless NAME
consists entirely of SUFFIX. */
static void
remove_suffix (register char *name, register char *suffix)
{
register char *np, *sp;
np = name + strlen (name);
sp = suffix + strlen (suffix);
while (np > name && sp > suffix)
if (*--np != *--sp)
return;
if (np > name)
*np = '\0';
}
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