--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hg4j/src/main/java/org/tmatesoft/hg/util/ByteChannel.java	Tue May 10 10:52:53 2011 +0200
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2011 TMate Software Ltd
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * For information on how to redistribute this software under
+ * the terms of a license other than GNU General Public License
+ * contact TMate Software at support@hg4j.com
+ */
+package org.tmatesoft.hg.util;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+/**
+ * Much like {@link java.nio.channels.WritableByteChannel} except for thrown exception 
+ * 
+ * XXX Perhaps, we'll add CharChannel in the future to deal with character conversions/encodings 
+ * 
+ * @author Artem Tikhomirov
+ * @author TMate Software Ltd.
+ */
+public interface ByteChannel {
+	// XXX does int return value makes any sense given buffer keeps its read state
+	// not clear what retvalue should be in case some filtering happened inside write - i.e. return
+	// number of bytes consumed in 
+	int write(ByteBuffer buffer) throws IOException, CancelledException;
+}