/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.harmony.nio.internal;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.MappedByteBuffer;
import java.nio.channels.ClosedChannelException;
import java.nio.channels.FileLock;
import java.nio.channels.NonReadableChannelException;
import java.nio.channels.WritableByteChannel;
public final class WriteOnlyFileChannel extends FileChannelImpl {
private boolean append = false;
public WriteOnlyFileChannel(Object stream, long handle) {
super(stream, handle);
}
public WriteOnlyFileChannel(Object stream, long handle, boolean isAppend) {
super(stream, handle);
append = isAppend;
}
/*
* (non-Javadoc)
* @see org.apache.harmony.nio.internal.FileChannelImpl#position()
*/
public long position() throws IOException {
return append ? size() : super.position();
}
public long transferTo(long position, long count, WritableByteChannel target)
throws IOException {
openCheck();
if (!target.isOpen()) {
throw new ClosedChannelException();
}
throw new NonReadableChannelException();
}
public long read(ByteBuffer[] buffers, int offset, int length)
throws IOException {
if (offset < 0 || length < 0 || offset + length > buffers.length) {
throw new IndexOutOfBoundsException();
}
openCheck();
throw new NonReadableChannelException();
}
public int read(ByteBuffer buffer) throws IOException {
openCheck();
throw new NonReadableChannelException();
}
public int read(ByteBuffer buffer, long position) throws IOException {
if (null == buffer) {
throw new NullPointerException();
}
if (position < 0){
throw new IllegalArgumentException();
}
throw new NonReadableChannelException();
}
public MappedByteBuffer map(MapMode mode, long position, long size)
throws IOException {
openCheck();
if (mode == null) {
throw new NullPointerException();
}
if (position < 0 || size < 0 || size > Integer.MAX_VALUE) {
throw new IllegalArgumentException();
}
throw new NonReadableChannelException();
}
public int write(ByteBuffer buffer) throws IOException {
if (append) {
position(size());
}
return super.write(buffer);
}
protected final FileLock basicLock(long position, long size,
boolean shared, boolean wait) throws IOException {
if (shared) {
throw new NonReadableChannelException();
}
return super.basicLock(position, size, shared, wait);
}
}