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build-aux/update-copyright
141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/* basename -- strip directory and suffix from file names
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Copyright (C) 1990-1997, 1999-2010 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 3 of the License, or
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(at your option) 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, see <http://www.gnu.org/licenses/>. */
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/* Usage: basename name [suffix]
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NAME is a file name; 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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#include <config.h>
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#include <getopt.h>
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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 "long-options.h"
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#include "error.h"
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#include "quote.h"
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/* The official name of this program (e.g., no `g' prefix). */
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#define PROGRAM_NAME "basename"
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#define AUTHORS proper_name ("David MacKenzie")
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void
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usage (int status)
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{
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if (status != EXIT_SUCCESS)
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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 NAME [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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fputs (_("\
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Print NAME with any leading directory components removed.\n\
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If specified, also remove a trailing SUFFIX.\n\
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\n\
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"), stdout);
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fputs (HELP_OPTION_DESCRIPTION, stdout);
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fputs (VERSION_OPTION_DESCRIPTION, stdout);
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printf (_("\
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\n\
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Examples:\n\
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%s /usr/bin/sort Output \"sort\".\n\
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%s include/stdio.h .h Output \"stdio\".\n\
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"),
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program_name, program_name);
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emit_ancillary_info ();
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}
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exit (status);
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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 (char *name, const char *suffix)
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{
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char *np;
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const char *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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int
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main (int argc, char **argv)
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{
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char *name;
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initialize_main (&argc, &argv);
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set_program_name (argv[0]);
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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atexit (close_stdout);
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parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, Version,
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usage, AUTHORS, (char const *) NULL);
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if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
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usage (EXIT_FAILURE);
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if (argc < optind + 1)
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{
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error (0, 0, _("missing operand"));
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usage (EXIT_FAILURE);
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}
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if (optind + 2 < argc)
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{
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error (0, 0, _("extra operand %s"), quote (argv[optind + 2]));
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usage (EXIT_FAILURE);
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}
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name = base_name (argv[optind]);
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strip_trailing_slashes (name);
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/* Per POSIX, `basename // /' must return `//' on platforms with
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distinct //. On platforms with drive letters, this generalizes
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to making `basename c: :' return `c:'. This rule is captured by
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skipping suffix stripping if base_name returned an absolute path
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or a drive letter (only possible if name is a file-system
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root). */
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if (argc == optind + 2 && IS_RELATIVE_FILE_NAME (name)
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&& ! FILE_SYSTEM_PREFIX_LEN (name))
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remove_suffix (name, argv[optind + 1]);
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puts (name);
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free (name);
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exit (EXIT_SUCCESS);
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}
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