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/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.http.nio.util;
import java.io.IOException;
import org.apache.http.nio.ContentEncoder;
/**
* Basic implementation of the {@link ContentOutputBuffer} interface.
*
* This class is not thread safe.
*
* @since 4.0
*/
public class SimpleOutputBuffer extends ExpandableBuffer implements ContentOutputBuffer {
private boolean endOfStream;
public SimpleOutputBuffer(final int buffersize, final ByteBufferAllocator allocator) {
super(buffersize, allocator);
this.endOfStream = false;
}
/**
* @since 4.3
*/
public SimpleOutputBuffer(final int buffersize) {
this(buffersize, HeapByteBufferAllocator.INSTANCE);
}
@Override
public int produceContent(final ContentEncoder encoder) throws IOException {
setOutputMode();
final int bytesWritten = encoder.write(this.buffer);
if (!hasData() && this.endOfStream) {
encoder.complete();
}
return bytesWritten;
}
@Override
public void write(final byte[] b, final int off, final int len) throws IOException {
if (b == null) {
return;
}
if (this.endOfStream) {
return;
}
setInputMode();
ensureCapacity(this.buffer.position() + len);
this.buffer.put(b, off, len);
}
public void write(final byte[] b) throws IOException {
if (b == null) {
return;
}
if (this.endOfStream) {
return;
}
write(b, 0, b.length);
}
@Override
public void write(final int b) throws IOException {
if (this.endOfStream) {
return;
}
setInputMode();
ensureCapacity(this.capacity() + 1);
this.buffer.put((byte)b);
}
@Override
public void reset() {
super.clear();
this.endOfStream = false;
}
@Override
public void flush() {
}
@Override
public void writeCompleted() {
this.endOfStream = true;
}
public void shutdown() {
this.endOfStream = true;
}
}