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Diffstat (limited to 'src/basename.c')
| -rw-r--r-- | src/basename.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/basename.c b/src/basename.c new file mode 100644 index 0000000..f2617b1 --- /dev/null +++ b/src/basename.c @@ -0,0 +1,144 @@ +/* basename -- strip directory and suffix from file names + Copyright (C) 1990-1997, 1999-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Usage: basename name [suffix] + NAME is a file name; 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 <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 "basename" + +#define AUTHORS "FIXME unknown" + +/* The name this program was run with. */ +char *program_name; + +void +usage (int status) +{ + if (status != EXIT_SUCCESS) + 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); + fputs (_("\ +Print NAME with any leading directory components removed.\n\ +If specified, also remove a trailing SUFFIX.\n\ +\n\ +"), stdout); + fputs (HELP_OPTION_DESCRIPTION, stdout); + fputs (VERSION_OPTION_DESCRIPTION, stdout); + printf (_("\ +\n\ +Examples:\n\ + %s /usr/bin/sort Output \"sort\".\n\ + %s include/stdio.h .h Output \"stdio\".\n\ +"), + program_name, program_name); + printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT); + } + exit (status); +} + +/* Remove SUFFIX from the end of NAME if it is there, unless NAME + consists entirely of SUFFIX. */ + +static void +remove_suffix (char *name, const char *suffix) +{ + char *np; + const char *sp; + + np = name + strlen (name); + sp = suffix + strlen (suffix); + + while (np > name && sp > suffix) + if (*--np != *--sp) + return; + if (np > name) + *np = '\0'; +} + +int +main (int argc, char **argv) +{ + char *name; + + initialize_main (&argc, &argv); + program_name = argv[0]; + setlocale (LC_ALL, ""); + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); + + atexit (close_stdout); + + parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, 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 + 2 < argc) + { + error (0, 0, _("extra operand %s"), quote (argv[optind + 2])); + usage (EXIT_FAILURE); + } + + name = base_name (argv[optind]); + strip_trailing_slashes (name); + + /* Per POSIX, `basename // /' must return `//' on platforms with + distinct //. On platforms with drive letters, this generalizes + to making `basename c: :' return `c:'. This rule is captured by + skipping suffix stripping if base_name returned an absolute path + or a drive letter (only possible if name is a file-system + root). */ + if (argc == optind + 2 && IS_RELATIVE_FILE_NAME (name) + && ! FILE_SYSTEM_PREFIX_LEN (name)) + remove_suffix (name, argv[optind + 1]); + + puts (name); + free (name); + + exit (EXIT_SUCCESS); +} |