/*

 * 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.

 * 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.

*/

#if 0

#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 */

#endif

#ifndef lint

#if 0

static char sccsid[] = "@@(#)cat.c	8.2 (Berkeley) 4/27/95";

#endif

#endif /* not lint */

#include <sys/cdefs.h>

__FBSDID("$FreeBSD$");

#include <sys/param.h>

#include <sys/stat.h>

#ifndef NO_UDOM_SUPPORT

#include <sys/socket.h>

#ifndef __SYMBIAN32__

#include <sys/un.h>

#endif

#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;

static int rval;

const char *filename;

static void usage(void);

static void scanfiles(char *argv[], int cooked);

static void cook_cat(FILE *);

static void raw_cat(int);

#ifndef NO_UDOM_SUPPORT

static int udom_open(const char *path, int flags);

#endif

#ifdef __SYMBIAN32__

static

void reset_globals()

{

	bflag=eflag=nflag=sflag=tflag=vflag=0;

}

#endif

int

cat_internal(int argc, char *argv[])

{

	int ch;

	setlocale(LC_CTYPE, "");

	optind=1;

#ifdef __SYMBIAN32__

	reset_globals();	

#endif			

	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:

			usage();

			return 1;

		}

	argv += optind;

	if (bflag || eflag || nflag || sflag || tflag || vflag)

		scanfiles(argv, 1);

	else

		scanfiles(argv, 0);

#ifndef __SYMBIAN32__	

	if (fclose(stdout))

		err(1, "stdout");

#endif	

	return (rval);

	/* NOTREACHED */

}

static void

usage(void)

{

	fprintf(stderr, "usage: cat [-benstuv] [file ...]\n");

	return;

	/* NOTREACHED */

}

static void

scanfiles(char *argv[], int cooked)

{

	int i = 0;

	char *path;

	FILE *fp;

	struct stat sbuf;

	while ((path = argv[i]) != NULL || i == 0) {

		int fd;

		if (path == NULL || strcmp(path, "-") == 0) {

			filename = "stdin";

			fd = STDIN_FILENO;

		} else {

			filename = path;

#ifdef __SYMBIAN32__		

		if(stat(path, &sbuf)==0 && S_ISDIR(sbuf.st_mode))

			{

			errno=EISDIR;

			printf("cat: ");

			warn("%s", path);

			break;		

			}

#endif		

			fd = open(path, O_RDONLY);

#ifndef NO_UDOM_SUPPORT

#ifndef __SYMBIAN32__

			if (fd < 0 && errno == EOPNOTSUPP)

				fd = udom_open(path, O_RDONLY);

#endif			

#endif

		}

		if (fd < 0) {

			printf("cat: ");

			warn("%s", filename);

			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(FILE *fp)

{

	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 (sflag) {

				if (ch == '\n') {

					if (gobble)

						continue;

					gobble = 1;

				} else

					gobble = 0;

			}

			if (nflag && (!bflag || ch != '\n')) {

				(void)fprintf(stdout, "%6d\t", ++line);

				if (ferror(stdout))

					break;

			}

		}

		if (ch == '\n') {

			if (eflag && 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)) {

		printf("cat: ");

		warn("%s", filename);

		rval = 1;

		clearerr(fp);

	}

	if (ferror(stdout))

		{

		printf("cat: ");

		err(1, "stdout");

		}

}

static void

raw_cat(int rfd)

{

	int off, wfd;

	ssize_t nr, nw;

	static size_t bsize;

	static char *buf = NULL;

	struct stat sbuf;

	wfd = fileno(stdout);

	if (buf == NULL) {

		if (fstat(wfd, &sbuf))

			{

			printf("cat: ");			

			err(1, "%s", filename);

			return;

			}

		bsize = MAX(sbuf.st_blksize, 1024);

		if ((buf = malloc(bsize)) == NULL)

			{

			printf("cat: ");

			err(1, "buffer");

			return;

			}

	}

	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)

				{

				printf("cat: ");

				err(1, "stdout");

				return;					

				}

#ifdef __SYMBIAN32__

	write(wfd, "\n",1);

#endif

	if (nr < 0) {

		printf("cat: ");

		warn("%s", filename);

		rval = 1;

	}

}

#ifndef NO_UDOM_SUPPORT

#ifndef __SYMBIAN32__

static int

udom_open(const char *path, int flags)

{

	struct sockaddr_un sou;

	int fd;

	unsigned int len;

	bzero(&sou, sizeof(sou));

	/*

	 * Construct the unix domain socket address and attempt to connect

	 */

	fd = socket(AF_UNIX, SOCK_STREAM, 0);

	if (fd >= 0) {

		sou.sun_family = AF_UNIX;

		if ((len = strlcpy(sou.sun_path, path,

		    sizeof(sou.sun_path))) >= sizeof(sou.sun_path)) {

			errno = ENAMETOOLONG;

			return (-1);

		}

		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:

			if (shutdown(fd, SHUT_WR) == -1)

				warn(NULL);

			break;

		case O_WRONLY:

			if (shutdown(fd, SHUT_RD) == -1)

				warn(NULL);

			break;

		default:

			break;

		}

	}

	return(fd);

}

#endif

#endif //__SYMBIAN32__