1 /* basename -- strip directory and suffix from file names
2 Copyright (C) 1990-1997, 1999-2006 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Usage: basename name [suffix]
18 NAME is a file name; SUFFIX is a suffix to strip from it.
20 basename /usr/foo/lossage/functions.l
22 basename /usr/foo/lossage/functions.l .l
24 basename functions.lisp p
30 #include <sys/types.h>
33 #include "long-options.h"
37 /* The official name of this program (e.g., no `g' prefix). */
38 #define PROGRAM_NAME "basename"
40 #define AUTHORS "FIXME unknown"
42 /* The name this program was run with. */
48 if (status != EXIT_SUCCESS)
49 fprintf (stderr, _("Try `%s --help' for more information.\n"),
54 Usage: %s NAME [SUFFIX]\n\
57 program_name, program_name);
59 Print NAME with any leading directory components removed.\n\
60 If specified, also remove a trailing SUFFIX.\n\
63 fputs (HELP_OPTION_DESCRIPTION, stdout);
64 fputs (VERSION_OPTION_DESCRIPTION, stdout);
68 %s /usr/bin/sort Output \"sort\".\n\
69 %s include/stdio.h .h Output \"stdio\".\n\
71 program_name, program_name);
72 emit_bug_reporting_address ();
77 /* Remove SUFFIX from the end of NAME if it is there, unless NAME
78 consists entirely of SUFFIX. */
81 remove_suffix (char *name, const char *suffix)
86 np = name + strlen (name);
87 sp = suffix + strlen (suffix);
89 while (np > name && sp > suffix)
97 main (int argc, char **argv)
101 initialize_main (&argc, &argv);
102 program_name = argv[0];
103 setlocale (LC_ALL, "");
104 bindtextdomain (PACKAGE, LOCALEDIR);
105 textdomain (PACKAGE);
107 atexit (close_stdout);
109 parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
110 usage, AUTHORS, (char const *) NULL);
111 if (getopt_long (argc, argv, "+", NULL, NULL) != -1)
112 usage (EXIT_FAILURE);
114 if (argc < optind + 1)
116 error (0, 0, _("missing operand"));
117 usage (EXIT_FAILURE);
120 if (optind + 2 < argc)
122 error (0, 0, _("extra operand %s"), quote (argv[optind + 2]));
123 usage (EXIT_FAILURE);
126 name = base_name (argv[optind]);
127 strip_trailing_slashes (name);
129 /* Per POSIX, `basename // /' must return `//' on platforms with
130 distinct //. On platforms with drive letters, this generalizes
131 to making `basename c: :' return `c:'. This rule is captured by
132 skipping suffix stripping if base_name returned an absolute path
133 or a drive letter (only possible if name is a file-system
135 if (argc == optind + 2 && IS_RELATIVE_FILE_NAME (name)
136 && ! FILE_SYSTEM_PREFIX_LEN (name))
137 remove_suffix (name, argv[optind + 1]);