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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
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.impl.client.cache;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.SequenceInputStream;
import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
import ch.boye.httpclientandroidlib.client.cache.Resource;
import ch.boye.httpclientandroidlib.entity.AbstractHttpEntity;
import ch.boye.httpclientandroidlib.util.Args;
@NotThreadSafe
class CombinedEntity extends AbstractHttpEntity {
private final Resource resource;
private final InputStream combinedStream;
CombinedEntity(final Resource resource, final InputStream instream) throws IOException {
super();
this.resource = resource;
this.combinedStream = new SequenceInputStream(
new ResourceStream(resource.getInputStream()), instream);
}
public long getContentLength() {
return -1;
}
public boolean isRepeatable() {
return false;
}
public boolean isStreaming() {
return true;
}
public InputStream getContent() throws IOException, IllegalStateException {
return this.combinedStream;
}
public void writeTo(final OutputStream outstream) throws IOException {
Args.notNull(outstream, "Output stream");
final InputStream instream = getContent();
try {
int l;
final byte[] tmp = new byte[2048];
while ((l = instream.read(tmp)) != -1) {
outstream.write(tmp, 0, l);
}
} finally {
instream.close();
}
}
private void dispose() {
this.resource.dispose();
}
class ResourceStream extends FilterInputStream {
protected ResourceStream(final InputStream in) {
super(in);
}
@Override
public void close() throws IOException {
try {
super.close();
} finally {
dispose();
}
}
}
}
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