#ifndef lint
static const char	RCSid[] = "$Id: wordfile.c,v 2.8 2003/02/22 02:07:23 greg Exp $";
#endif
/*
 * Load whitespace separated words from a file into an array.
 * Assume the passed pointer array is big enough to hold them all.
 *
 * External symbols declared in standard.h
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   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. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact radiance@radsite.lbl.gov.
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 Lawrence Berkeley National Laboratory OR
 * ITS 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

#include <ctype.h>

#define NULL		0

#define MAXFLEN		8192		/* file must be smaller than this */

extern char	*bmalloc();


int
wordfile(words, fname)		/* get words from fname, put in words */
char	**words;
char	*fname;
{
	int	fd;
	char	buf[MAXFLEN];
	register int	n;
					/* load file into buffer */
	if (fname == NULL)
		return(-1);			/* no filename */
	if ((fd = open(fname, 0)) < 0)
		return(-1);			/* open error */
	n = read(fd, buf, MAXFLEN);
	close(fd);
	if (n < 0)				/* read error */
		return(-1);
	if (n == MAXFLEN)		/* file too big, take what we can */
		while (!isspace(buf[--n]))
			if (n <= 0)		/* one long word! */
				return(-1);
	buf[n] = '\0';			/* terminate */
	return(wordstring(words, buf));	/* wordstring does the rest */
}


int
wordstring(avl, str)			/* allocate and load argument list */
char	**avl;
char	*str;
{
	register char	*cp, **ap;
	
	if (str == NULL)
		return(-1);
	cp = bmalloc(strlen(str)+1);
	if (cp == NULL)			/* ENOMEM */
		return(-1);
	strcpy(cp, str);
	ap = avl;		/* parse into words */
	for ( ; ; ) {
		while (isspace(*cp))	/* nullify spaces */
			*cp++ = '\0';
		if (!*cp)		/* all done? */
			break;
		*ap++ = cp;		/* add argument to list */
		while (*++cp && !isspace(*cp))
			;
	}
	*ap = NULL;
	return(ap - avl);
}