mirror of
git://git.sv.gnu.org/coreutils
synced 2026-06-05 15:22:12 -04:00
Jim Meyering
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
/* basename -- strip directory and suffix from filenames
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Copyright (C) 90, 91, 92, 93, 1994 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Usage: basename name [suffix]
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NAME is a pathname; SUFFIX is a suffix to strip from it.
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basename /usr/foo/lossage/functions.l
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=> functions.l
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basename /usr/foo/lossage/functions.l .l
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=> functions
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basename functions.lisp p
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=> functions.lis */
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#ifdef HAVE_CONFIG_H
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#if defined (CONFIG_BROKETS)
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/* We use <config.h> instead of "config.h" so that a compilation
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using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
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(which it would do because it found this file in $srcdir). */
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#include <config.h>
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#else
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#include "config.h"
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#endif
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include "system.h"
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#include "version.h"
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#include "long-options.h"
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char *basename ();
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void strip_trailing_slashes ();
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static void remove_suffix ();
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/* The name this program was run with. */
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char *program_name;
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static void
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usage (status)
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int status;
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{
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if (status != 0)
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fprintf (stderr, "Try `%s --help' for more information.\n",
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program_name);
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else
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{
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printf ("\
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Usage: %s PATH [SUFFIX]\n\
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or: %s OPTION\n\
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",
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program_name, program_name);
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printf ("\
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\n\
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--help display this help and exit\n\
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--version output version information and exit\n\
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");
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}
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exit (status);
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}
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void
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main (argc, argv)
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int argc;
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char **argv;
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{
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char *name;
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program_name = argv[0];
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parse_long_options (argc, argv, "basename", version_string, usage);
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if (argc == 1 || argc > 3)
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usage (1);
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strip_trailing_slashes (argv[1]);
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name = basename (argv[1]);
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if (argc == 3)
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remove_suffix (name, argv[2]);
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puts (name);
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exit (0);
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}
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/* Remove SUFFIX from the end of NAME if it is there, unless NAME
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consists entirely of SUFFIX. */
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static void
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remove_suffix (name, suffix)
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register char *name, *suffix;
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{
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register char *np, *sp;
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np = name + strlen (name);
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sp = suffix + strlen (suffix);
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while (np > name && sp > suffix)
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if (*--np != *--sp)
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return;
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if (np > name)
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*np = '\0';
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}
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