2003-03-20 Michael Koch <konqueror@gmx.de>

	* java/io/FileInputStream.java
	(getChannel): New implementation.
	* java/io/FileOutputStream.java
	(ch): New member variable.
	(getChannel): Implemented.
	* java/io/RandomAccessFile.java
	(RandomAccessFile): Throws FileNotFoundException instead of
	IOException.
	(getChannel): New method.
	(ch): New member variable.

From-SVN: r64609

3 files changed, 37 insertions, 7 deletions

diff --git a/libjava/java/io/FileInputStream.java b/libjava/java/io/FileInputStream.java
index bbc7f7c..dcda9d8 100644
--- a/libjava/java/io/FileInputStream.java
+++ b/libjava/java/io/FileInputStream.java
@@ -34,6 +34,7 @@ exception statement from your version. */
 package java.io;
 
 import java.nio.channels.FileChannel;
+import gnu.java.nio.FileChannelImpl;
 
 /**
  * @author Warren Levy <warrenl@cygnus.com>
@@ -124,6 +125,12 @@ public class FileInputStream extends InputStream
 
   public FileChannel getChannel ()
   {
-    return ch;
+    synchronized (this)
+      {
+        if (ch == null)
+          ch = new FileChannelImpl (fd, false, this);
+    
+        return ch;
+      }
   }
 }
diff --git a/libjava/java/io/FileOutputStream.java b/libjava/java/io/FileOutputStream.java
index 1154a4b..eaf4d9b 100644
--- a/libjava/java/io/FileOutputStream.java
+++ b/libjava/java/io/FileOutputStream.java
@@ -39,6 +39,7 @@ exception statement from your version. */
 package java.io;
 
 import java.nio.channels.FileChannel;
+import gnu.java.nio.FileChannelImpl;
 
 /**
  * @author Tom Tromey <tromey@cygnus.com>
@@ -147,11 +148,18 @@ public class FileOutputStream extends OutputStream
       fd.close();
   }
 
-  // Instance variables.
-  private FileDescriptor fd;
-
   public FileChannel getChannel ()
   {
-    return null;
+    synchronized (this)
+      {
+        if (ch == null)
+          ch = new FileChannelImpl (fd, true, this);
+
+        return ch;
+      }
   }
+
+  // Instance variables.
+  private FileDescriptor fd;
+  private FileChannel ch;
 }
diff --git a/libjava/java/io/RandomAccessFile.java b/libjava/java/io/RandomAccessFile.java
index d019282..32d2687 100644
--- a/libjava/java/io/RandomAccessFile.java
+++ b/libjava/java/io/RandomAccessFile.java
@@ -38,6 +38,9 @@ exception statement from your version. */
 
 package java.io;
 
+import java.nio.channels.FileChannel;
+import gnu.java.nio.FileChannelImpl;
+
 /**
  * @author Tom Tromey <tromey@cygnus.com>
  * @date September 25, 1998 
@@ -78,7 +81,8 @@ public class RandomAccessFile implements DataOutput, DataInput
     return fd.length();
   }
 
-  public RandomAccessFile (String fileName, String mode) throws IOException
+  public RandomAccessFile (String fileName, String mode)
+    throws FileNotFoundException
   {
     int fdmode;
     if (mode.compareTo ("r") == 0)
@@ -101,7 +105,7 @@ public class RandomAccessFile implements DataOutput, DataInput
     in = new DataInputStream (new FileInputStream (fd));
   }
 
-  public RandomAccessFile (File file, String mode) throws IOException
+  public RandomAccessFile (File file, String mode) throws FileNotFoundException
   {
     this (file.getPath(), mode);
   }
@@ -276,10 +280,21 @@ public class RandomAccessFile implements DataOutput, DataInput
     out.writeUTF(s);
   }
 
+  public FileChannel getChannel ()
+  {
+    synchronized (this)
+      {
+        if (ch == null)
+          ch = new FileChannelImpl (fd, true, this);
+
+	return ch;
+      }
+  }
 
   // The underlying file.
   private FileDescriptor fd;
   // The corresponding input and output streams.
   private DataOutputStream out;
   private DataInputStream in;
+  private FileChannel ch;
 }