1 /*- 2 * Copyright (c) 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD: src/usr.bin/basename/basename.c,v 1.15 2004/07/15 06:15:10 tjr Exp $ 34 * $DragonFly: src/usr.bin/basename/basename.c,v 1.5 2005/09/18 10:12:55 asmodai Exp $ 35 * 36 * @(#) Copyright (c) 1991, 1993, 1994 The Regents of the University of California. All rights reserved. 37 * @(#)basename.c 8.4 (Berkeley) 5/4/95 38 */ 39 40 #include <err.h> 41 #include <libgen.h> 42 #include <limits.h> 43 #include <locale.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 #include <wchar.h> 49 50 void stripsuffix(char *, const char *, size_t); 51 void usage(void); 52 53 int 54 main(int argc, char **argv) 55 { 56 char *p, *suffix; 57 size_t suffixlen; 58 int ch; 59 60 setlocale(LC_ALL, ""); 61 62 suffix = 0; 63 suffixlen = NULL; 64 65 while ((ch = getopt(argc, argv, "")) != -1) 66 switch(ch) { 67 case '?': 68 default: 69 usage(); 70 } 71 argc -= optind; 72 argv += optind; 73 74 if (argc != 1 && argc != 2) 75 usage(); 76 77 if (!*argv[0]) { 78 printf("\n"); 79 exit(0); 80 } 81 if ((p = basename(argv[0])) == NULL) 82 err(1, "%s", argv[0]); 83 stripsuffix(p, suffix, suffixlen); 84 (void)printf("%s\n", p); 85 exit(0); 86 } 87 88 void 89 stripsuffix(char *p, const char *suffix, size_t suffixlen) 90 { 91 char *q, *r; 92 mbstate_t mbs; 93 size_t n; 94 95 if (suffixlen && (q = strchr(p, '\0') - suffixlen) > p && 96 strcmp(suffix, q) == 0) { 97 /* Ensure that the match occurred on a character boundary. */ 98 memset(&mbs, 0, sizeof(mbs)); 99 for (r = p; r < q; r += n) { 100 n = mbrlen(r, MB_LEN_MAX, &mbs); 101 if (n == (size_t)-1 || n == (size_t)-2) { 102 memset(&mbs, 0, sizeof(mbs)); 103 n = 1; 104 } 105 } 106 /* Chop off the suffix. */ 107 if (q == r) 108 *q = '\0'; 109 } 110 } 111 112 void 113 usage(void) 114 { 115 116 (void)fprintf(stderr, "usage: basename string [suffix]\n"); 117 exit(1); 118 } 119