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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.client.entity;
/*
* ====================================================================
* 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/>.
*
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPOutputStream;
import ch.boye.httpclientandroidlib.Header;
import ch.boye.httpclientandroidlib.HttpEntity;
import ch.boye.httpclientandroidlib.entity.HttpEntityWrapper;
import ch.boye.httpclientandroidlib.message.BasicHeader;
import ch.boye.httpclientandroidlib.protocol.HTTP;
import ch.boye.httpclientandroidlib.util.Args;
/**
* Wrapping entity that compresses content when {@link #writeTo writing}.
*
*
* @since 4.0
*/
public class GzipCompressingEntity extends HttpEntityWrapper {
private static final String GZIP_CODEC = "gzip";
public GzipCompressingEntity(final HttpEntity entity) {
super(entity);
}
@Override
public Header getContentEncoding() {
return new BasicHeader(HTTP.CONTENT_ENCODING, GZIP_CODEC);
}
@Override
public long getContentLength() {
return -1;
}
@Override
public boolean isChunked() {
// force content chunking
return true;
}
@Override
public InputStream getContent() throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void writeTo(final OutputStream outstream) throws IOException {
Args.notNull(outstream, "Output stream");
final GZIPOutputStream gzip = new GZIPOutputStream(outstream);
wrappedEntity.writeTo(gzip);
// Only close output stream if the wrapped entity has been
// successfully written out
gzip.close();
}
}
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