1 /* $OpenBSD: basename.c,v 1.8 2005/04/12 06:43:44 otto Exp $ */ 2 /* $NetBSD: basename.c,v 1.9 1995/09/02 05:29:46 jtc Exp $ */ 3 4 /*- 5 * Copyright (c) 1991, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 static char copyright[] = 35 "@(#) Copyright (c) 1991, 1993, 1994\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #ifndef lint 40 #if 0 41 static char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95"; 42 #endif 43 static char rcsid[] = "$OpenBSD: basename.c,v 1.8 2005/04/12 06:43:44 otto Exp $"; 44 #endif /* not lint */ 45 46 #include <err.h> 47 #include <libgen.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <locale.h> 52 #include <unistd.h> 53 54 void usage(void); 55 56 int 57 main(int argc, char *argv[]) 58 { 59 int ch; 60 char *p; 61 62 setlocale(LC_ALL, ""); 63 64 while ((ch = getopt(argc, argv, "")) != -1) { 65 switch (ch) { 66 default: 67 usage(); 68 } 69 } 70 argc -= optind; 71 argv += optind; 72 73 if (argc != 1 && argc != 2) 74 usage(); 75 76 if (**argv == '\0') { 77 (void)puts(""); 78 exit(0); 79 } 80 p = basename(*argv); 81 if (p == NULL) 82 err(1, "%s", *argv); 83 /* 84 * If the suffix operand is present, is not identical to the 85 * characters remaining in string, and is identical to a suffix 86 * of the characters remaining in string, the suffix suffix 87 * shall be removed from string. 88 */ 89 if (*++argv) { 90 size_t suffixlen, stringlen, off; 91 92 suffixlen = strlen(*argv); 93 stringlen = strlen(p); 94 95 if (suffixlen < stringlen) { 96 off = stringlen - suffixlen; 97 if (!strcmp(p + off, *argv)) 98 p[off] = '\0'; 99 } 100 } 101 (void)puts(p); 102 exit(0); 103 } 104 105 extern char *__progname; 106 void 107 usage(void) 108 { 109 110 (void)fprintf(stderr, "usage: %s string [suffix]\n", __progname); 111 exit(1); 112 } 113