--- ray/src/common/wordfile.c	1993/04/02 09:11:35	2.6
+++ ray/src/common/wordfile.c	2016/03/22 15:14:39	2.17
@@ -1,53 +1,82 @@
-/* Copyright (c) 1992 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: wordfile.c,v 2.17 2016/03/22 15:14:39 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
  */
 
+#include "copyright.h"
+
 #include <ctype.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 
-#define NULL		0
+#include "platform.h"
+#include "standard.h"
 
-#define MAXFLEN		8192		/* file must be smaller than this */
 
-extern char	*bmalloc();
+#define MAXWLEN		4096	/* words must be shorter than this */
 
 
 int
-wordfile(words, fname)		/* get words from fname, put in words */
-char	**words;
-char	*fname;
+wordfile(			/* get words from fname, put in words */
+	char	**words,
+	int	nargs,
+	char	*fname
+)
 {
+	int	wrdcnt = 0;
+	int	n = 0;
 	int	fd;
-	char	buf[MAXFLEN];
-	register int	n;
+	char	buf[MAXWLEN];
 					/* load file into buffer */
+	if (fname == NULL || !*fname)
+		return(-1);			/* no filename */
+	if (nargs <= 1)
+		return(-1);
 	if ((fd = open(fname, 0)) < 0)
 		return(-1);			/* open error */
-	n = read(fd, buf, MAXFLEN);
+	words[0] = NULL;
+	while (nargs > 1 && (n += read(fd, buf+n, MAXWLEN-n)) > 0) {
+		int	crem = 0;
+		if (n >= MAXWLEN)		/* still something left? */
+			while (!isspace(buf[--n])) {
+				if (n <= 0)	/* one long word! */
+					goto done;
+				++crem;
+			}
+		buf[n] = '\0';			/* terminate & parse */
+		n = wordstring(words, nargs, buf);
+		if (n < 0) {
+			wrdcnt = -1;		/* memory error */
+			break;
+		}
+		words += n;
+		nargs -= n;
+		wrdcnt += n;
+		if ((n = crem) > 0)		/* move remainder */
+			strncpy(buf, buf+MAXWLEN-crem, crem);
+	}
+done:
 	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 */
+	return(wrdcnt);
 }
 
 
 int
-wordstring(avl, str)			/* allocate and load argument list */
-char	**avl;
-char	*str;
+wordstring(				/* allocate and load argument list */
+	char	**avl,
+	int	nargs,
+	char	*str
+)
 {
-	register char	*cp, **ap;
+	char	*cp, **ap;
 	
 	if (str == NULL)
 		return(-1);
@@ -55,16 +84,17 @@ char	*str;
 	if (cp == NULL)			/* ENOMEM */
 		return(-1);
 	strcpy(cp, str);
-	ap = avl;		/* parse into words */
-	for ( ; ; ) {
+					/* parse into words */
+	for (ap = avl; ap-avl < nargs-1; ap++) {
 		while (isspace(*cp))	/* nullify spaces */
 			*cp++ = '\0';
 		if (!*cp)		/* all done? */
 			break;
-		*ap++ = cp;		/* add argument to list */
+		*ap = cp;		/* add argument to list */
 		while (*++cp && !isspace(*cp))
 			;
 	}
+	*cp = '\0';			/* terminates overflow */
 	*ap = NULL;
 	return(ap - avl);
 }