/*	$NetBSD: read_line.c,v 1.2 1997/10/13 03:42:29 lukem Exp $	*/

/*
 * Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se>
 * 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 Mats O Jansson
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: read_line.c,v 1.2 1997/10/13 03:42:29 lukem Exp $");
#endif

#include <sys/param.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include "protos.h"

/*
 * Read one line
 */
int 
read_line(fp, buf, size)
	FILE *fp;
	char *buf;
	int size;
{
	int done = 0;

	do {
		while (fgets(buf, size, fp)) {
			int len = strlen(buf);

			done += len;
			if (len > 1 && buf[len - 2] == '\\' &&
			    buf[len - 1] == '\n') {
				int ch;
				buf += len - 2;
				size -= len - 2;
				*buf = '\n';
				buf[1] = '\0';

				/* Skip leading white space on next line */
				while ((ch = getc(fp)) != EOF &&
				    isascii(ch) && isspace(ch))
					/* empty */ ;
				(void) ungetc(ch, fp);
			} else
				return done;
		}
	} while (size > 0 && !feof(fp));

	return done;
}