Date: Mon, 28 Oct 96 12:44:00 PST From: Mana Bando <mbando@melita.com> To: "'freebsd'" <questions@freebsd.org> Subject: Prob with "strings.c" Message-ID: <3275298B@mailgate.melita.com>
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To whom it may concern.
Greetings,
I do not know whether you guy's are the right person or not...but if you
are, can you help me out...here below i got a program call "strings.c" which
my boss told me that he got it quite a while ago from "freebsd"...i tried to
compile this code... unfortunately, this is giving me an error...looks like
either downloading was not correct or some of the needed file to run this
program are missing...anyway, can you solve this problem and let me know
whether i am looking at the right "strings.c" source codes or you have the
latest version of this codes or during download we might lost some of the
needed header file or we need to download correct version with the correct
header file....
...anyway, i will really appreciate if you can help me out
asap...incidentally, if you can let me know any of its documentation or what
it does in detail, will be a great help...here below i am attaching the
"strings.c" file.
thanks
Mana B. (Voice: 770.409.4634 E_mail: mbando@melita.com)
[[ strings.TXT : 3160 in strings.TXT ]]
/*
* 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. 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 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.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980, 1987 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)strings.c 5.10 (Berkeley) 5/23/91";
#endif /* not lint */
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <a.out.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#define DEF_LEN 4 /* default minimum string length */
#define ISSTR(ch) (isascii(ch) && (isprint(ch) || ch == '\t'))
typedef struct exec EXEC; /* struct exec cast */
static long foff; /* offset in the file */
static int hcnt, /* head count */
head_len, /* length of header */
read_len; /* length to read */
static u_char hbfr[sizeof(EXEC)]; /* buffer for struct exec */
static void usage();
main(argc, argv)
int argc;
char **argv;
{
extern char *optarg;
extern int optind;
register int ch, cnt;
register u_char *C;
EXEC *head;
int exitcode, minlen;
short asdata, oflg, fflg;
u_char *bfr;
char *file, *p;
/*
* for backward compatibility, allow '-' to specify 'a' flag; no
* longer documented in the man page or usage string.
*/
asdata = exitcode = fflg = oflg = 0;
minlen = -1;
while ((ch = getopt(argc, argv, "-0123456789anof")) != EOF)
switch((char)ch) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
/*
* kludge: strings was originally designed to take
* a number after a dash.
*/
if (minlen == -1) {
p = argv[optind - 1];
if (p[0] == '-' && p[1] == ch && !p[2])
minlen = atoi(++p);
else
minlen = atoi(argv[optind] + 1);
}
break;
case '-':
case 'a':
asdata = 1;
break;
case 'f':
fflg = 1;
break;
case 'n':
minlen = atoi(optarg);
break;
case 'o':
oflg = 1;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (minlen == -1)
minlen = DEF_LEN;
if (!(bfr = malloc((u_int)minlen))) {
(void)fprintf(stderr, "strings: %s\n", strerror(errno));
exit(1);
}
bfr[minlen] = '\0';
file = "stdin";
do {
if (*argv) {
file = *argv++;
if (!freopen(file, "r", stdin)) {
(void)fprintf(stderr,
"strings; %s: %s\n", file, strerror(errno));
exitcode = 1;
goto nextfile;
}
}
foff = 0;
#define DO_EVERYTHING() {read_len = -1; head_len = 0; goto start;}
read_len = -1;
if (asdata)
DO_EVERYTHING()
else {
head = (EXEC *)hbfr;
if ((head_len =
read(fileno(stdin), head, sizeof(EXEC))) == -1)
DO_EVERYTHING()
if (head_len == sizeof(EXEC) && !N_BADMAG(*head)) {
foff = N_TXTOFF(*head);
if (fseek(stdin, foff, SEEK_SET) == -1)
DO_EVERYTHING()
read_len = head->a_text + head->a_data;
head_len = 0;
}
else
hcnt = 0;
}
start:
for (cnt = 0; (ch = getch()) != EOF;) {
if (ISSTR(ch)) {
if (!cnt)
C = bfr;
*C++ = ch;
if (++cnt < minlen)
continue;
if (fflg)
printf("%s:", file);
if (oflg)
printf("%07ld %s",
foff - minlen, (char *)bfr);
else
printf("%s", bfr);
while ((ch = getch()) != EOF && ISSTR(ch))
putchar((char)ch);
putchar('\n');
}
cnt = 0;
}
nextfile: ;
} while (*argv);
exit(exitcode);
}
/*
* getch --
* get next character from wherever
*/
getch()
{
++foff;
if (head_len) {
if (hcnt < head_len)
return((int)hbfr[hcnt++]);
head_len = 0;
}
if (read_len == -1 || read_len-- > 0)
return(getchar());
return(EOF);
}
static void
usage()
{
(void)fprintf(stderr,
"usage: strings [-afo] [-n length] [file ... ]\n");
exit(1);
}
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