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/* vi: set sw=4 ts=4: */
/*
* strings implementation for busybox
*
* Copyright (c) 1980, 1987
* The Regents of the University of California. All rights reserved.
*
* 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
*
* Original copyright notice is retained at the end of this file.
*
* Modified for BusyBox by Erik Andersen <andersee@debian.org>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <ctype.h>
#include "busybox.h"
#define ISSTR(ch) (isprint(ch) || ch == '\t')
int strings_main(int argc, char **argv)
{
extern char *optarg;
extern int optind;
int ch, cnt;
int exitcode;
int oflg, fflg;
char *file;
size_t foff, minlen;
unsigned char *bfr, *C;
exitcode = fflg = oflg = 0;
minlen = -1;
while ((ch = getopt(argc, argv, "an:of")) > 0)
switch(ch) {
case 'a':
break;
case 'f':
fflg = 1;
break;
case 'n':
minlen = atoi(optarg);
break;
case 'o':
oflg = 1;
break;
default:
show_usage();
}
argc -= optind;
argv += optind;
if (minlen == -1)
minlen = 4;
bfr = xmalloc(minlen);
bfr[minlen] = '\0';
file = "stdin";
do {
if (*argv) {
fprintf(stderr, "opening '%s'\n", *argv);
file = *argv++;
if (!freopen(file, "r", stdin)) {
perror_msg("%s", file);
exitcode = EXIT_FAILURE;
continue;
}
}
foff = 0;
for (cnt = 0; (ch = getchar()) != EOF;) {
foff++;
if (ISSTR(ch)) {
if (!cnt)
C = bfr;
*C++ = ch;
if (++cnt < minlen)
continue;
if (fflg)
printf("%s:", file);
if (oflg)
printf("%7ld %s", (long)(foff - minlen), (char *)bfr);
else
printf("%s", bfr);
while ((ch = getchar()) != EOF && ISSTR(ch))
putchar((char)ch);
putchar('\n');
}
cnt = 0;
}
} while (*argv);
exit(exitcode);
}
/*
* Copyright (c) 1980, 1987
* The Regents of the University of California. All rights reserved.
*
* 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. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 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 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.
*/
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