320 lines
6.9 KiB
C
320 lines
6.9 KiB
C
/*
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Kevin Fall.
|
|
*
|
|
* 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
|
|
static char const copyright[] =
|
|
"@(#) Copyright (c) 1989, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)cat.c 8.2 (Berkeley) 4/27/95";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#ifndef NO_UDOM_SUPPORT
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <errno.h>
|
|
#endif
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <stddef.h>
|
|
|
|
int bflag, eflag, nflag, sflag, tflag, vflag;
|
|
int rval;
|
|
const char *filename;
|
|
|
|
int main __P((int argc, char *argv[]));
|
|
|
|
static void scanfiles __P((char **argv, int cooked));
|
|
static void cook_cat __P((FILE *));
|
|
static void raw_cat __P((int));
|
|
|
|
#ifndef NO_UDOM_SUPPORT
|
|
static int udom_open __P((const char *path, int flags));
|
|
#endif
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int ch;
|
|
|
|
setlocale(LC_CTYPE, "");
|
|
|
|
while ((ch = getopt(argc, argv, "benstuv")) != -1)
|
|
switch (ch) {
|
|
case 'b':
|
|
bflag = nflag = 1; /* -b implies -n */
|
|
break;
|
|
case 'e':
|
|
eflag = vflag = 1; /* -e implies -v */
|
|
break;
|
|
case 'n':
|
|
nflag = 1;
|
|
break;
|
|
case 's':
|
|
sflag = 1;
|
|
break;
|
|
case 't':
|
|
tflag = vflag = 1; /* -t implies -v */
|
|
break;
|
|
case 'u':
|
|
setbuf(stdout, NULL);
|
|
break;
|
|
case 'v':
|
|
vflag = 1;
|
|
break;
|
|
default:
|
|
(void)fprintf(stderr,
|
|
"usage: cat [-benstuv] [-] [file ...]\n");
|
|
exit(1);
|
|
}
|
|
argv += optind;
|
|
|
|
if (bflag || eflag || nflag || sflag || tflag || vflag)
|
|
scanfiles(argv, 1);
|
|
else
|
|
scanfiles(argv, 0);
|
|
if (fclose(stdout))
|
|
err(1, "stdout");
|
|
exit(rval);
|
|
}
|
|
|
|
void
|
|
scanfiles(argv, cooked)
|
|
char **argv;
|
|
int cooked;
|
|
{
|
|
int i = 0;
|
|
char *path;
|
|
FILE *fp;
|
|
|
|
while ((path = argv[i]) != NULL || i == 0) {
|
|
int fd;
|
|
|
|
if (path == NULL || strcmp(path, "-") == 0) {
|
|
filename = "stdin";
|
|
fd = STDIN_FILENO;
|
|
} else {
|
|
filename = path;
|
|
fd = open(path, O_RDONLY);
|
|
#ifndef NO_UDOM_SUPPORT
|
|
if (fd < 0 && errno == EOPNOTSUPP)
|
|
fd = udom_open(path, O_RDONLY);
|
|
#endif
|
|
}
|
|
if (fd < 0) {
|
|
warn("%s", path);
|
|
rval = 1;
|
|
} else if (cooked) {
|
|
if (fd == STDIN_FILENO)
|
|
cook_cat(stdin);
|
|
else {
|
|
fp = fdopen(fd, "r");
|
|
cook_cat(fp);
|
|
fclose(fp);
|
|
}
|
|
} else {
|
|
raw_cat(fd);
|
|
if (fd != STDIN_FILENO)
|
|
close(fd);
|
|
}
|
|
if (path == NULL)
|
|
break;
|
|
++i;
|
|
}
|
|
}
|
|
|
|
static void
|
|
cook_cat(fp)
|
|
register FILE *fp;
|
|
{
|
|
register int ch, gobble, line, prev;
|
|
|
|
/* Reset EOF condition on stdin. */
|
|
if (fp == stdin && feof(stdin))
|
|
clearerr(stdin);
|
|
|
|
line = gobble = 0;
|
|
for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
|
|
if (prev == '\n') {
|
|
if (ch == '\n') {
|
|
if (sflag) {
|
|
if (!gobble && putchar(ch) == EOF)
|
|
break;
|
|
gobble = 1;
|
|
continue;
|
|
}
|
|
if (nflag && !bflag) {
|
|
(void)fprintf(stdout, "%6d\t", ++line);
|
|
if (ferror(stdout))
|
|
break;
|
|
}
|
|
} else if (nflag) {
|
|
(void)fprintf(stdout, "%6d\t", ++line);
|
|
if (ferror(stdout))
|
|
break;
|
|
}
|
|
}
|
|
gobble = 0;
|
|
if (ch == '\n') {
|
|
if (eflag)
|
|
if (putchar('$') == EOF)
|
|
break;
|
|
} else if (ch == '\t') {
|
|
if (tflag) {
|
|
if (putchar('^') == EOF || putchar('I') == EOF)
|
|
break;
|
|
continue;
|
|
}
|
|
} else if (vflag) {
|
|
if (!isascii(ch) && !isprint(ch)) {
|
|
if (putchar('M') == EOF || putchar('-') == EOF)
|
|
break;
|
|
ch = toascii(ch);
|
|
}
|
|
if (iscntrl(ch)) {
|
|
if (putchar('^') == EOF ||
|
|
putchar(ch == '\177' ? '?' :
|
|
ch | 0100) == EOF)
|
|
break;
|
|
continue;
|
|
}
|
|
}
|
|
if (putchar(ch) == EOF)
|
|
break;
|
|
}
|
|
if (ferror(fp)) {
|
|
warn("%s", filename);
|
|
rval = 1;
|
|
clearerr(fp);
|
|
}
|
|
if (ferror(stdout))
|
|
err(1, "stdout");
|
|
}
|
|
|
|
static void
|
|
raw_cat(rfd)
|
|
register int rfd;
|
|
{
|
|
register int off, wfd;
|
|
ssize_t nr, nw;
|
|
static size_t bsize;
|
|
static char *buf;
|
|
struct stat sbuf;
|
|
|
|
wfd = fileno(stdout);
|
|
if (buf == NULL) {
|
|
if (fstat(wfd, &sbuf))
|
|
err(1, "%s", filename);
|
|
bsize = MAX(sbuf.st_blksize, 1024);
|
|
if ((buf = malloc(bsize)) == NULL)
|
|
err(1, "buffer");
|
|
}
|
|
while ((nr = read(rfd, buf, bsize)) > 0)
|
|
for (off = 0; nr; nr -= nw, off += nw)
|
|
if ((nw = write(wfd, buf + off, (size_t)nr)) < 0)
|
|
err(1, "stdout");
|
|
if (nr < 0) {
|
|
warn("%s", filename);
|
|
rval = 1;
|
|
}
|
|
}
|
|
|
|
#ifndef NO_UDOM_SUPPORT
|
|
|
|
static int
|
|
udom_open(path, flags)
|
|
const char *path;
|
|
int flags;
|
|
{
|
|
struct sockaddr_un sou;
|
|
int fd;
|
|
int len;
|
|
|
|
bzero(&sou, sizeof(sou));
|
|
|
|
/*
|
|
* Construct the unix domain socket address and attempt to connect
|
|
*/
|
|
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0) {
|
|
sou.sun_family = AF_UNIX;
|
|
snprintf(sou.sun_path, sizeof(sou.sun_path), "%s", path);
|
|
len = strlen(sou.sun_path);
|
|
len = offsetof(struct sockaddr_un, sun_path[len+1]);
|
|
|
|
if (connect(fd, (void *)&sou, len) < 0) {
|
|
close(fd);
|
|
fd = -1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* handle the open flags by shutting down appropriate directions
|
|
*/
|
|
if (fd >= 0) {
|
|
switch(flags & O_ACCMODE) {
|
|
case O_RDONLY:
|
|
shutdown(fd, SHUT_WR);
|
|
break;
|
|
case O_WRONLY:
|
|
shutdown(fd, SHUT_RD);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return(fd);
|
|
}
|
|
|
|
#endif
|
|
|