I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
192 lines
5 KiB
C
192 lines
5 KiB
C
/*
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* Copyright (c) 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* basename.c
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* Strip directory and suffix from filenames.
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*/
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#include <errno.h>
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#include <error.h>
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#include <libgen.h>
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#include <locale.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void do_basename(char* path, const char* suffix, bool zero)
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{
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if ( path[0] )
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{
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const char* name = basename(path);
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size_t name_length = strlen(name);
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size_t suffix_length = suffix ? strlen(suffix) : 0;
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if ( suffix && suffix_length <= name_length &&
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!strcmp(name + name_length - suffix_length, suffix) )
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name_length -= suffix_length;
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fwrite(name, sizeof(char), name_length, stdout);
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}
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fputc(zero ? '\0' : '\n', stdout);
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}
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static void compact_arguments(int* argc, char*** argv)
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{
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for ( int i = 0; i < *argc; i++ )
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{
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while ( i < *argc && !(*argv)[i] )
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{
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for ( int n = i; n < *argc; n++ )
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(*argv)[n] = (*argv)[n+1];
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(*argc)--;
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}
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}
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}
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static void help(FILE* fp, const char* argv0)
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{
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fprintf(fp, "Usage: %s NAME [SUFFIX]\n", argv0);
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fprintf(fp, " or: %s OPTION... NAME...\n", argv0);
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fprintf(fp, "Print NAME with any leading directory components removed.\n");
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fprintf(fp, "If specified, also remove a trailing SUFFIX.\n");
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fprintf(fp, "\n");
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fprintf(fp, " -a, --multiple support multiple arguments and treat each as a NAME\n");
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fprintf(fp, " -s, --suffix=SUFFIX remove a trailing SUFFIX\n");
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fprintf(fp, " -z, --zero separate output with NUL rather than newline\n");
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fprintf(fp, " --help display this help and exit\n");
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fprintf(fp, " --version output version information and exit\n");
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fprintf(fp, "\n");
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fprintf(fp, "Examples:\n");
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fprintf(fp, " %s /usr/bin/sort -> \"sort\"\n", argv0);
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fprintf(fp, " %s include/stdio.h .h -> \"stdio\"\n", argv0);
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fprintf(fp, " %s -s .h include/stdio.h -> \"stdio\"\n", argv0);
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fprintf(fp, " %s -a any/str1 any/str2 -> \"str1\" followed by \"str2\"\n", argv0);
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}
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static void version(FILE* fp, const char* argv0)
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{
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fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
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}
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int main(int argc, char* argv[])
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{
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setlocale(LC_ALL, "");
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bool multiple = false;
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const char* suffix = NULL;
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bool zero = false;
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const char* argv0 = argv[0];
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for ( int i = 1; i < argc; i++ )
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{
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const char* arg = argv[i];
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if ( arg[0] != '-' || !arg[1] )
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break; /* Stop after first non-option. */
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argv[i] = NULL;
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if ( !strcmp(arg, "--") )
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break;
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if ( arg[1] != '-' )
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{
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char c;
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while ( (c = *++arg) ) switch ( c )
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{
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case 'a': multiple = true; break;
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case 's':
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if ( !*(suffix = arg + 1) )
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{
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if ( i + 1 == argc )
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{
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error(0, 0, "option requires an argument -- 's'");
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fprintf(stderr, "Try `%s --help' for more information.\n", argv[0]);
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exit(1);
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}
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suffix = argv[i+1];
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argv[++i] = NULL;
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}
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arg = "s";
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break;
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case 'z': zero = true; break;
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default:
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fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
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help(stderr, argv0);
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exit(1);
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}
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}
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else if ( !strcmp(arg, "--help") )
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help(stdout, argv0), exit(0);
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else if ( !strcmp(arg, "--version") )
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version(stdout, argv0), exit(0);
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else if ( !strcmp(arg, "--multiple") )
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multiple = true;
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else if ( !strncmp(arg, "--suffix=", strlen("--suffix=")) )
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suffix = arg + strlen("--suffix=");
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else if ( !strcmp(arg, "--suffix") )
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{
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if ( i + 1 == argc )
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{
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error(0, 0, "option '--suffix' requires an argument");
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fprintf(stderr, "Try `%s --help' for more information.\n", argv[0]);
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exit(125);
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}
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suffix = argv[i+1];
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argv[++i] = NULL;
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}
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else if ( !strcmp(arg, "--zero") )
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zero = true;
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else
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{
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fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
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help(stderr, argv0);
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exit(1);
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}
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}
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compact_arguments(&argc, &argv);
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if ( argc <= 1 )
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{
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error(0, 0, "missing operand");
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fprintf(stderr, "Try `%s --help' for more information.\n", argv[0]);
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exit(1);
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}
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if ( multiple || suffix )
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{
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for ( int i = 1; i < argc; i++ )
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do_basename(argv[i], suffix, zero);
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}
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else
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{
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if ( 4 <= argc )
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{
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error(0, 0, "extra operand `%s'", argv[3]);
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fprintf(stderr, "Try `%s --help' for more information.\n", argv[0]);
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exit(1);
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}
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if ( 3 <= argc )
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suffix = argv[2];
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do_basename(argv[1], suffix, zero);
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}
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if ( fflush(stdout) == EOF )
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return 1;
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if ( ferror(stdout) )
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return 1;
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return 0;
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}
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