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 * 4. 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 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1991, 1993, 1994\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif 35 36 #if 0 37 #ifndef lint 38 static char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95"; 39 #endif /* not lint */ 40 #endif 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <err.h> 46 #include <libgen.h> 47 #include <limits.h> 48 #include <locale.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 #include <wchar.h> 54 55 void stripsuffix(char *, const char *, size_t); 56 void usage(void); 57 58 int 59 main(int argc, char **argv) 60 { 61 char *p, *suffix; 62 size_t suffixlen; 63 int aflag, ch; 64 65 setlocale(LC_ALL, ""); 66 67 aflag = 0; 68 suffix = NULL; 69 suffixlen = 0; 70 71 while ((ch = getopt(argc, argv, "as:")) != -1) 72 switch(ch) { 73 case 'a': 74 aflag = 1; 75 break; 76 case 's': 77 suffix = optarg; 78 break; 79 case '?': 80 default: 81 usage(); 82 } 83 argc -= optind; 84 argv += optind; 85 86 if (argc < 1) 87 usage(); 88 89 if (!*argv[0]) { 90 printf("\n"); 91 exit(0); 92 } 93 if ((p = basename(argv[0])) == NULL) 94 err(1, "%s", argv[0]); 95 if ((suffix == NULL && !aflag) && argc == 2) { 96 suffix = argv[1]; 97 argc--; 98 } 99 if (suffix != NULL) 100 suffixlen = strlen(suffix); 101 while (argc--) { 102 if ((p = basename(*argv)) == NULL) 103 err(1, "%s", argv[0]); 104 stripsuffix(p, suffix, suffixlen); 105 argv++; 106 (void)printf("%s\n", p); 107 } 108 exit(0); 109 } 110 111 void 112 stripsuffix(char *p, const char *suffix, size_t suffixlen) 113 { 114 char *q, *r; 115 mbstate_t mbs; 116 size_t n; 117 118 if (suffixlen && (q = strchr(p, '\0') - suffixlen) > p && 119 strcmp(suffix, q) == 0) { 120 /* Ensure that the match occurred on a character boundary. */ 121 memset(&mbs, 0, sizeof(mbs)); 122 for (r = p; r < q; r += n) { 123 n = mbrlen(r, MB_LEN_MAX, &mbs); 124 if (n == (size_t)-1 || n == (size_t)-2) { 125 memset(&mbs, 0, sizeof(mbs)); 126 n = 1; 127 } 128 } 129 /* Chop off the suffix. */ 130 if (q == r) 131 *q = '\0'; 132 } 133 } 134 135 void 136 usage(void) 137 { 138 139 (void)fprintf(stderr, 140 "usage: basename string [suffix]\n" 141 " basename [-a] [-s suffix] string [...]\n"); 142 exit(1); 143 } 144