basename.c revision 87628
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1991, 1993, 1994 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 341590Srgrimes#ifndef lint 3541568Sarchiestatic const char copyright[] = 361590Srgrimes"@(#) Copyright (c) 1991, 1993, 1994\n\ 371590Srgrimes The Regents of the University of California. All rights reserved.\n"; 3887258Smarkm#endif 391590Srgrimes 4087628Sdwmalone#if 0 411590Srgrimes#ifndef lint 4287628Sdwmalonestatic char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95"; 431590Srgrimes#endif /* not lint */ 4487628Sdwmalone#endif 451590Srgrimes 4687628Sdwmalone#include <sys/cdefs.h> 4787628Sdwmalone__FBSDID("$FreeBSD: head/usr.bin/basename/basename.c 87628 2001-12-10 21:13:08Z dwmalone $"); 4887628Sdwmalone 4965508Sdes#include <err.h> 5065413Sdes#include <libgen.h> 511590Srgrimes#include <stdio.h> 5278717Sdd#include <stdlib.h> 5365508Sdes#include <string.h> 5423690Speter#include <unistd.h> 551590Srgrimes 5676889Skrisint main __P((int, char **)); 571590Srgrimesvoid usage __P((void)); 581590Srgrimes 591590Srgrimesint 601590Srgrimesmain(argc, argv) 611590Srgrimes int argc; 621590Srgrimes char **argv; 631590Srgrimes{ 6465508Sdes char *p, *q; 651590Srgrimes int ch; 661590Srgrimes 6724360Simp while ((ch = getopt(argc, argv, "")) != -1) 681590Srgrimes switch(ch) { 691590Srgrimes case '?': 701590Srgrimes default: 711590Srgrimes usage(); 721590Srgrimes } 731590Srgrimes argc -= optind; 741590Srgrimes argv += optind; 751590Srgrimes 761590Srgrimes if (argc != 1 && argc != 2) 771590Srgrimes usage(); 781590Srgrimes 7967024Sdes if (!*argv[0]) { 8067024Sdes printf("\n"); 8167024Sdes exit(0); 8267024Sdes } 8365508Sdes if ((p = basename(argv[0])) == NULL) 8465508Sdes err(1, "%s", argv[0]); 8567024Sdes if (*++argv && (q = strchr(p, '\0') - strlen(*argv)) > p && 8667024Sdes strcmp(*argv, q) == 0) 8767024Sdes *q = '\0'; 8865508Sdes (void)printf("%s\n", p); 891590Srgrimes exit(0); 901590Srgrimes} 911590Srgrimes 921590Srgrimesvoid 931590Srgrimesusage() 941590Srgrimes{ 951590Srgrimes 961590Srgrimes (void)fprintf(stderr, "usage: basename string [suffix]\n"); 971590Srgrimes exit(1); 981590Srgrimes} 99