diff options
Diffstat (limited to 'coreutils/dirname.c')
| -rw-r--r-- | coreutils/dirname.c | 163 |
1 files changed, 31 insertions, 132 deletions
diff --git a/coreutils/dirname.c b/coreutils/dirname.c index 77cb664..528b89a 100644 --- a/coreutils/dirname.c +++ b/coreutils/dirname.c @@ -1,146 +1,45 @@ /* vi: set sw=4 ts=4: */ /* - * This is temporary -- needs to be rewritten to be tighter */ -/* - * Copyright (c) 1991, 1993, 1994 - * The Regents of the University of California. All rights reserved. + * Mini dirname implementation for busybox + * + * Copyright (C) 2000 by Lineo, inc. + * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. */ - -#if 0 -#ifndef lint -static char copyright[] = "@(#) Copyright (c) 1991, 1993, 1994\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -static char sccsid[] = "@(#)dirname.c 8.4 (Berkeley) 5/4/95"; -#endif /* not lint */ -#endif /* #if 0 */ - #include "internal.h" #include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -void dirname_usage() +extern int dirname_main(int argc, char **argv) { + char* s; - (void) fprintf(stderr, "usage: dirname path\n"); - exit(1); -} - -extern int dirname_main(argc, argv) -int argc; -char **argv; -{ - char *p; - int ch; - - while ((ch = getopt(argc, argv, "")) != -1) - switch (ch) { - case '?': - default: - dirname_usage(); - } - argc -= optind; - argv += optind; - - if (argc != 1) - dirname_usage(); - - /* - * (1) If string is //, skip steps (2) through (5). - * (2) If string consists entirely of slash characters, string - * shall be set to a single slash character. In this case, - * skip steps (3) through (8). - */ - for (p = *argv;; ++p) { - if (!*p) { - if (p > *argv) - (void) printf("/\n"); - else - (void) printf(".\n"); - exit(0); - } - if (*p != '/') - break; + if ((argc < 2) || (**(argv + 1) == '-')) { + usage("dirname [file ...]\n"); } + argv++; - /* - * (3) If there are any trailing slash characters in string, they - * shall be removed. - */ - for (; *p; ++p); - while (*--p == '/') - continue; - *++p = '\0'; - - /* - * (4) If there are no slash characters remaining in string, - * string shall be set to a single period character. In this - * case skip steps (5) through (8). - * - * (5) If there are any trailing nonslash characters in string, - * they shall be removed. - */ - while (--p >= *argv) - if (*p == '/') - break; - ++p; - if (p == *argv) { - (void) printf(".\n"); - exit(0); + s=*argv+strlen(*argv)-1; + while (s && *s == '/') { + *s = '\0'; + s=*argv+strlen(*argv)-1; } - - /* - * (6) If the remaining string is //, it is implementation defined - * whether steps (7) and (8) are skipped or processed. - * - * This case has already been handled, as part of steps (1) and (2). - */ - - /* - * (7) If there are any trailing slash characters in string, they - * shall be removed. - */ - while (--p >= *argv) - if (*p != '/') - break; - ++p; - - /* - * (8) If the remaining string is empty, string shall be set to - * a single slash character. - */ - *p = '\0'; - (void) printf("%s\n", p == *argv ? "/" : *argv); - exit(0); + s = strrchr(*argv, '/'); + if (s && *s) + *s = '\0'; + printf("%s\n", (s)? *argv : "."); + exit(TRUE); } |