fix calling of Write and Read for new SWI style interface.

packages/PLStream/pl-yap.c

@@ -1121,6 +1121,9 @@ Yap_StreamPosition(IOSTREAM *st)
   return StreamPosition(st);
 }
 
+IOSTREAM   *STD_PROTO(Yap_Scurin, (void));
+int    STD_PROTO(Yap_dowrite, (Term, IOSTREAM *, int, int));
+
 IOSTREAM *
 Yap_Scurin(void)
 {
@@ -1128,6 +1131,32 @@ Yap_Scurin(void)
   return Scurin;
 }
 
+int 
+Yap_dowrite(Term t, IOSTREAM *stream, int flags, int priority)
+     /* term to be written			 */
+     /* consumer				 */
+     /* write options			 */
+{			
+  CACHE_REGS
+    int swi_flags;
+  int res;
+  Int slot = Yap_InitSlot(t PASS_REGS);  
+
+  swi_flags = 0;
+  if (flags & Quote_illegal_f)
+    swi_flags |= PL_WRT_QUOTED;
+  if (flags & Handle_vars_f)
+    swi_flags |= PL_WRT_NUMBERVARS;
+  if (flags & Use_portray_f)
+    swi_flags |= PL_WRT_PORTRAY;
+  if (flags & Ignore_ops_f)
+    swi_flags |= PL_WRT_IGNOREOPS;
+  
+  res =  PL_write_term(stream, slot, priority, swi_flags);
+  Yap_RecoverSlots(1 PASS_REGS);
+  return res;
+}
+
 
 #if THREADS
 
@@ -1178,6 +1207,7 @@ error:
   return rc;
 }
 
+
 int
 recursiveMutexInit(recursiveMutex *m)
 {