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More doc updates for BusyBox, with fixes to apps for bugs revealed

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while trying to write docs . :-)
 -Erik
This commit is contained in:
Erik Andersen
2000-04-13 18:49:43 +00:00
parent b4f8606c05
commit 9cf3bfa7c1
30 changed files with 680 additions and 1658 deletions
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163
coreutils/dirname.c
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@@ -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
*
* 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.
* 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.
*
* 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);
}