X-Git-Url: http://nitlanguage.org

diff --git a/lib/standard/stream.nit b/lib/standard/stream.nit
index 507ba8d..a94601c 100644
--- a/lib/standard/stream.nit
+++ b/lib/standard/stream.nit
@@ -13,13 +13,14 @@
 # Input and output streams of characters
 module stream
 
-import string
+intrude import ropes
 
 in "C" `{
 	#include <unistd.h>
 	#include <poll.h>
 	#include <errno.h>
 	#include <string.h>
+	#include <signal.h>
 `}
 
 # Abstract stream class
@@ -136,6 +137,29 @@ redef class Text
 	redef fun write_to(stream) do stream.write(self)
 end
 
+redef class RopeNode
+	super Streamable
+end
+
+redef class Leaf
+
+	redef fun write_to(s) do s.write(str)
+end
+
+redef class Concat
+
+	redef fun write_to(s)
+	do
+		if left != null then left.write_to(s)
+		if right != null then right.write_to(s)
+	end
+end
+
+redef class RopeString
+
+	redef fun write_to(s) do root.write_to(s)
+end
+
 # Input streams with a buffer
 abstract class BufferedIStream
 	super IStream
@@ -395,6 +419,13 @@ class StringOStream
 
 	private var content = new Array[String]
 	redef fun to_s do return content.to_s
-	redef fun is_writable do return true
-	redef fun write(str) do content.add(str.to_s)
+	redef fun is_writable do return not closed
+	redef fun write(str)
+	do
+		assert not closed
+		content.add(str.to_s)
+	end
+
+	protected var closed = false
+	redef fun close do closed = true
 end