1 /* $OpenBSD: basename.c,v 1.13 2015/12/24 17:11:47 mmcc 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 #include <err.h> 34 #include <libgen.h> 35 #include <locale.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <unistd.h> 40 41 void usage(void); 42 43 int 44 main(int argc, char *argv[]) 45 { 46 int ch; 47 char *p; 48 49 setlocale(LC_ALL, ""); 50 51 if (pledge("stdio", NULL) == -1) 52 err(1, "pledge"); 53 54 while ((ch = getopt(argc, argv, "")) != -1) { 55 switch (ch) { 56 default: 57 usage(); 58 } 59 } 60 argc -= optind; 61 argv += optind; 62 63 if (argc != 1 && argc != 2) 64 usage(); 65 66 if (**argv == '\0') { 67 (void)puts(""); 68 exit(0); 69 } 70 p = basename(*argv); 71 if (p == NULL) 72 err(1, "%s", *argv); 73 /* 74 * If the suffix operand is present, is not identical to the 75 * characters remaining in string, and is identical to a suffix 76 * of the characters remaining in string, the suffix suffix 77 * shall be removed from string. 78 */ 79 if (*++argv) { 80 size_t suffixlen, stringlen, off; 81 82 suffixlen = strlen(*argv); 83 stringlen = strlen(p); 84 85 if (suffixlen < stringlen) { 86 off = stringlen - suffixlen; 87 if (!strcmp(p + off, *argv)) 88 p[off] = '\0'; 89 } 90 } 91 (void)puts(p); 92 return 0; 93 } 94 95 extern char *__progname; 96 void 97 usage(void) 98 { 99 100 (void)fprintf(stderr, "usage: %s string [suffix]\n", __progname); 101 exit(1); 102 } 103