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FYI: Patch: java.nio.channel.Channels


Hi list,


I commited the attached patch to implement another mehtod of 
java.nio.channel.Channels. It also needs a little helper class (not optimized 
yet).


Michael
Index: ChangeLog
===================================================================
RCS file: /cvs/gcc/gcc/libjava/ChangeLog,v
retrieving revision 1.2466
diff -u -b -B -r1.2466 ChangeLog
--- ChangeLog	19 Dec 2003 15:27:58 -0000	1.2466
+++ ChangeLog	19 Dec 2003 16:25:49 -0000
@@ -1,5 +1,13 @@
 2003-12-19  Michael Koch  <konqueror@gmx.de>
 
+	* gnu/java/nio/OutputStreamChannel.java: New file.
+	* java/nio/channels/Channels.java (newChannel): Implemented.
+	* Makefile.am (ordinary_java_source_files):
+	Added gnu/java/nio/OutputStreamChannel.java.
+	* Makefile.in: Regenerated.
+
+2003-12-19  Michael Koch  <konqueror@gmx.de>
+
 	* Makefile.am (ordinary_java_source_files):
 	Added gnu.java.nio.InputStreamChannel. 
 	* Makefile.in: Regenerated.
Index: Makefile.am
===================================================================
RCS file: /cvs/gcc/gcc/libjava/Makefile.am,v
retrieving revision 1.338
diff -u -b -B -r1.338 Makefile.am
--- Makefile.am	19 Dec 2003 15:27:59 -0000	1.338
+++ Makefile.am	19 Dec 2003 16:25:49 -0000
@@ -2225,6 +2225,7 @@
 gnu/java/nio/NIOServerSocket.java \
 gnu/java/nio/NIOSocket.java \
 gnu/java/nio/InputStreamChannel.java \
+gnu/java/nio/OutputStreamChannel.java \
 gnu/java/nio/PipeImpl.java \
 gnu/java/nio/SelectionKeyImpl.java \
 gnu/java/nio/SelectorImpl.java \
Index: Makefile.in
===================================================================
RCS file: /cvs/gcc/gcc/libjava/Makefile.in,v
retrieving revision 1.362
diff -u -b -B -r1.362 Makefile.in
--- Makefile.in	19 Dec 2003 15:28:00 -0000	1.362
+++ Makefile.in	19 Dec 2003 16:25:51 -0000
@@ -1932,6 +1932,7 @@
 gnu/java/nio/NIOServerSocket.java \
 gnu/java/nio/NIOSocket.java \
 gnu/java/nio/InputStreamChannel.java \
+gnu/java/nio/OutputStreamChannel.java \
 gnu/java/nio/PipeImpl.java \
 gnu/java/nio/SelectionKeyImpl.java \
 gnu/java/nio/SelectorImpl.java \
@@ -3070,8 +3071,8 @@
 .deps/gnu/java/nio/NIOConstants.P \
 .deps/gnu/java/nio/NIODatagramSocket.P \
 .deps/gnu/java/nio/NIOServerSocket.P .deps/gnu/java/nio/NIOSocket.P \
-.deps/gnu/java/nio/PipeImpl.P .deps/gnu/java/nio/SelectionKeyImpl.P \
-.deps/gnu/java/nio/SelectorImpl.P \
+.deps/gnu/java/nio/OutputStreamChannel.P .deps/gnu/java/nio/PipeImpl.P \
+.deps/gnu/java/nio/SelectionKeyImpl.P .deps/gnu/java/nio/SelectorImpl.P \
 .deps/gnu/java/nio/SelectorProviderImpl.P \
 .deps/gnu/java/nio/ServerSocketChannelImpl.P \
 .deps/gnu/java/nio/ServerSocketChannelSelectionKey.P \
Index: gnu/java/nio/OutputStreamChannel.java
===================================================================
RCS file: gnu/java/nio/OutputStreamChannel.java
diff -N gnu/java/nio/OutputStreamChannel.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gnu/java/nio/OutputStreamChannel.java	19 Dec 2003 16:25:51 -0000
@@ -0,0 +1,87 @@
+/* OutputStreamChannel.java -- 
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.nio;
+
+import java.io.OutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ClosedChannelException;
+import java.nio.channels.WritableByteChannel;
+
+/**
+ * @author Michael Koch
+ */
+public final class OutputStreamChannel implements WritableByteChannel
+{
+  private boolean closed = false;
+  private OutputStream out;
+  
+  public OutputStreamChannel (OutputStream out)
+  {
+    super();
+    
+    this.out = out;
+  }
+
+  public void close() throws IOException
+  {
+    if (!closed)
+      {
+        out.close();
+        closed = true;
+      }
+  }
+
+  public boolean isOpen()
+  {
+    return !closed;
+  }
+  
+  public int write (ByteBuffer src) throws IOException
+  {
+    if (!isOpen())
+      throw new ClosedChannelException();
+    
+    int len = src.remaining();
+    byte[] buffer = new byte [len];
+    src.get (buffer);
+    out.write (buffer);
+    return len;
+  }
+}
Index: java/nio/channels/Channels.java
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/nio/channels/Channels.java,v
retrieving revision 1.3
diff -u -b -B -r1.3 Channels.java
--- java/nio/channels/Channels.java	19 Dec 2003 15:22:33 -0000	1.3
+++ java/nio/channels/Channels.java	19 Dec 2003 16:25:51 -0000
@@ -38,6 +38,7 @@
 package java.nio.channels;
 
 import gnu.java.nio.InputStreamChannel;
+import gnu.java.nio.OutputStreamChannel;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.Reader;
@@ -78,9 +79,9 @@
   /**
    * Constructs a channel that writes bytes to the given stream.
    */
-  public static WritableByteChannel newChannel (OutputStream out)
+  public static WritableByteChannel newChannel(OutputStream out)
   {
-    throw new Error ("not implemented");
+    return new OutputStreamChannel (out);
   }
 
   /**

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