--- ray/src/rt/editline.c	1994/10/26 10:04:12	2.2
+++ ray/src/rt/editline.c	2003/07/27 22:12:03	2.7
@@ -1,15 +1,20 @@
-/* Copyright (c) 1987 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: editline.c,v 2.7 2003/07/27 22:12:03 schorsch Exp $";
 #endif
-
 /*
  *  editline.c - routine for editing raw input for rview.
  *
- *	10/5/88
+ *  External symbols declared in driver.h
  */
 
+#include "copyright.h"
+
+#include <stdio.h>
+
+#include "color.h"
+
+#include "driver.h"
+
 #define iscntrl(c)	((c) < ' ')
 #define isblank(c)	((c) == ' ')
 #define iserase(c)	((c) == '\b' || (c) == 127)
@@ -17,9 +22,11 @@ static char SCCSid[] = "$SunId$ LBL";
 #define iskill(c)	((c) == 'U'-'@' || (c) == 'X'-'@')
 
 
+void
 editline(buf, c_get, s_put)	/* edit input line */
 char  *buf;
-int  (*c_get)(), (*s_put)();
+int  (*c_get)();
+void  (*s_put)();
 {
 	static char  erases[] = "\b \b";
 	static char  obuf[4];
@@ -63,25 +70,32 @@ int  (*c_get)(), (*s_put)();
 }
 
 
-#include  "driver.h"
-
 static char  mybuf[512];
 
 
+void
 tocombuf(b, d)				/* add command(s) to my buffer */
 register char  *b;
 register struct driver  *d;
 {
 	register char  *cp;
+	char  *comstart;
 
 	for (cp = mybuf; *cp; cp++)
 		;
-	while (*cp++ = *b)
-		if (*b++ == '\n')
+	comstart = cp;
+	while ( (*cp++ = *b) )
+		if (cp >= mybuf+sizeof(mybuf)) {
+			*comstart = '\0';
+			return;		/* what should I do about this? */
+		} else if (*b++ == '\n') {
 			d->inpready++;
+			comstart = cp;
+		}
 }
 
 
+int
 fromcombuf(b, d)			/* get command from my buffer */
 char  *b;
 struct driver  *d;
@@ -99,7 +113,7 @@ struct driver  *d;
 						/* send it as reply */
 	strcpy(b, mybuf);
 	d->inpready--;
-						/* get next command */
+						/* advance commands */
 	strcpy(mybuf, cp);
 	return(1);
 }