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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/usr.bin/basename/basename.c,v 1.15 2004/07/15 06:15:10 tjr Exp $ 30 * 31 * @(#) Copyright (c) 1991, 1993, 1994 The Regents of the University of California. All rights reserved. 32 * @(#)basename.c 8.4 (Berkeley) 5/4/95 33 */ 34 35 #include <err.h> 36 #include <libgen.h> 37 #include <limits.h> 38 #include <locale.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 #include <wchar.h> 44 45 static void stripsuffix(char *, const char *, size_t); 46 static void usage(void) __dead2; 47 48 int 49 main(int argc, char **argv) 50 { 51 char *p, *suffix; 52 size_t suffixlen; 53 int aflag, ch; 54 55 setlocale(LC_ALL, ""); 56 57 aflag = 0; 58 suffix = NULL; 59 suffixlen = 0; 60 61 while ((ch = getopt(argc, argv, "as:")) != -1) { 62 switch(ch) { 63 case 'a': 64 aflag = 1; 65 break; 66 case 's': 67 suffix = optarg; 68 break; 69 case '?': 70 default: 71 usage(); 72 } 73 } 74 argc -= optind; 75 argv += optind; 76 77 if (argc < 1) 78 usage(); 79 80 if (!*argv[0]) { 81 printf("\n"); 82 exit(0); 83 } 84 if ((p = basename(argv[0])) == NULL) 85 err(1, "%s", argv[0]); 86 if ((suffix == NULL && !aflag) && argc == 2) { 87 suffix = argv[1]; 88 argc--; 89 } 90 if (suffix != NULL) 91 suffixlen = strlen(suffix); 92 while (argc--) { 93 if ((p = basename(*argv)) == NULL) 94 err(1, "%s", argv[0]); 95 stripsuffix(p, suffix, suffixlen); 96 argv++; 97 printf("%s\n", p); 98 } 99 exit(0); 100 } 101 102 static void 103 stripsuffix(char *p, const char *suffix, size_t suffixlen) 104 { 105 char *q; 106 char *r; 107 mbstate_t mbs; 108 size_t n; 109 110 if (suffixlen && (q = strchr(p, '\0') - suffixlen) > p && 111 strcmp(suffix, q) == 0) { 112 /* Ensure that the match occurred on a character boundary. */ 113 memset(&mbs, 0, sizeof(mbs)); 114 for (r = p; r < q; r += n) { 115 n = mbrlen(r, MB_LEN_MAX, &mbs); 116 if (n == (size_t)-1 || n == (size_t)-2) { 117 memset(&mbs, 0, sizeof(mbs)); 118 n = 1; 119 } 120 } 121 /* Chop off the suffix. */ 122 if (q == r) 123 *q = '\0'; 124 } 125 } 126 127 static void 128 usage(void) 129 { 130 131 fprintf(stderr, 132 "usage: basename string [suffix]\n" 133 " basename [-a] [-s suffix] string [...]\n"); 134 exit(1); 135 } 136