diff options
Diffstat (limited to 'src/basename.c')
| -rw-r--r-- | src/basename.c | 153 |
1 files changed, 99 insertions, 54 deletions
diff --git a/src/basename.c b/src/basename.c index f2617b1..e2ed879 100644 --- a/src/basename.c +++ b/src/basename.c @@ -1,10 +1,10 @@ /* basename -- strip directory and suffix from file names - Copyright (C) 1990-1997, 1999-2006 Free Software Foundation, Inc. + Copyright (C) 1990-2016 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify + 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. + the Free Software Foundation, either version 3 of the License, 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 @@ -12,18 +12,7 @@ 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 */ + along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <getopt.h> @@ -31,52 +20,66 @@ #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). */ +/* The official name of this program (e.g., no 'g' prefix). */ #define PROGRAM_NAME "basename" -#define AUTHORS "FIXME unknown" +#define AUTHORS proper_name ("David MacKenzie") -/* The name this program was run with. */ -char *program_name; +static struct option const longopts[] = +{ + {"multiple", no_argument, NULL, 'a'}, + {"suffix", required_argument, NULL, 's'}, + {"zero", no_argument, NULL, 'z'}, + {GETOPT_HELP_OPTION_DECL}, + {GETOPT_VERSION_OPTION_DECL}, + {NULL, 0, NULL, 0} +}; void usage (int status) { if (status != EXIT_SUCCESS) - fprintf (stderr, _("Try `%s --help' for more information.\n"), - program_name); + emit_try_help (); else { printf (_("\ Usage: %s NAME [SUFFIX]\n\ - or: %s OPTION\n\ + or: %s OPTION... NAME...\n\ "), - program_name, program_name); + program_name, program_name); fputs (_("\ Print NAME with any leading directory components removed.\n\ If specified, also remove a trailing SUFFIX.\n\ -\n\ +"), stdout); + + emit_mandatory_arg_note (); + + fputs (_("\ + -a, --multiple support multiple arguments and treat each as a NAME\n\ + -s, --suffix=SUFFIX remove a trailing SUFFIX; implies -a\n\ + -z, --zero end each output line with NUL, not newline\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\ + %s /usr/bin/sort -> \"sort\"\n\ + %s include/stdio.h .h -> \"stdio\"\n\ + %s -s .h include/stdio.h -> \"stdio\"\n\ + %s -a any/str1 any/str2 -> \"str1\" followed by \"str2\"\n\ "), - program_name, program_name); - printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT); + program_name, program_name, program_name, program_name); + emit_ancillary_info (PROGRAM_NAME); } exit (status); } /* Remove SUFFIX from the end of NAME if it is there, unless NAME - consists entirely of SUFFIX. */ + consists entirely of SUFFIX. */ static void remove_suffix (char *name, const char *suffix) @@ -94,23 +97,72 @@ remove_suffix (char *name, const char *suffix) *np = '\0'; } +/* Perform the basename operation on STRING. If SUFFIX is non-NULL, remove + the trailing SUFFIX. Finally, output the result string. */ + +static void +perform_basename (const char *string, const char *suffix, bool use_nuls) +{ + char *name = base_name (string); + 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 (suffix && IS_RELATIVE_FILE_NAME (name) && ! FILE_SYSTEM_PREFIX_LEN (name)) + remove_suffix (name, suffix); + + fputs (name, stdout); + putchar (use_nuls ? '\0' : '\n'); + free (name); +} + int main (int argc, char **argv) { - char *name; + bool multiple_names = false; + bool use_nuls = false; + const char *suffix = NULL; initialize_main (&argc, &argv); - program_name = argv[0]; + set_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); + while (true) + { + int c = getopt_long (argc, argv, "+as:z", longopts, NULL); + + if (c == -1) + break; + + switch (c) + { + case 's': + suffix = optarg; + /* Fall through: -s implies -a. */ + + case 'a': + multiple_names = true; + break; + + case 'z': + use_nuls = true; + break; + + case_GETOPT_HELP_CHAR; + case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS); + + default: + usage (EXIT_FAILURE); + } + } if (argc < optind + 1) { @@ -118,27 +170,20 @@ main (int argc, char **argv) usage (EXIT_FAILURE); } - if (optind + 2 < argc) + if (!multiple_names && 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); + if (multiple_names) + { + for (; optind < argc; optind++) + perform_basename (argv[optind], suffix, use_nuls); + } + else + perform_basename (argv[optind], + optind + 2 == argc ? argv[optind + 1] : NULL, use_nuls); - exit (EXIT_SUCCESS); + return EXIT_SUCCESS; } |