1 /* $NetBSD: basename.c,v 1.14 2008/07/21 14:19:21 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1991, 1993, 1994\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95"; 41 #endif 42 __RCSID("$NetBSD: basename.c,v 1.14 2008/07/21 14:19:21 lukem Exp $"); 43 #endif /* not lint */ 44 45 #include <err.h> 46 #include <libgen.h> 47 #include <locale.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <unistd.h> 52 53 static void usage(void); 54 55 int 56 main(int argc, char **argv) 57 { 58 char *p; 59 int ch; 60 61 setlocale(LC_ALL, ""); 62 63 while ((ch = getopt(argc, argv, "")) != -1) 64 switch (ch) { 65 case '?': 66 default: 67 usage(); 68 } 69 argc -= optind; 70 argv += optind; 71 72 if (argc != 1 && argc != 2) 73 usage(); 74 75 if (**argv == '\0') { 76 (void)printf("\n"); 77 exit(0); 78 } 79 if ((p = basename(*argv)) == NULL) 80 err(1, "%s", *argv); 81 if (*++argv != '\0') { 82 int suffixlen, stringlen, off; 83 84 suffixlen = strlen(*argv); 85 stringlen = strlen(p); 86 87 if (suffixlen < stringlen) { 88 off = stringlen - suffixlen; 89 if (strcmp(p + off, *argv) == 0) 90 p[off] = '\0'; 91 } 92 } 93 (void)printf("%s\n", p); 94 exit(0); 95 } 96 97 static void 98 usage(void) 99 { 100 101 (void)fprintf(stderr, "usage: basename string [suffix]\n"); 102 exit(1); 103 } 104