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Diffstat (limited to 'src/org/apache/http/impl/entity/EntityDeserializer.java')
-rw-r--r-- | src/org/apache/http/impl/entity/EntityDeserializer.java | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/org/apache/http/impl/entity/EntityDeserializer.java b/src/org/apache/http/impl/entity/EntityDeserializer.java new file mode 100644 index 0000000..12c4756 --- /dev/null +++ b/src/org/apache/http/impl/entity/EntityDeserializer.java @@ -0,0 +1,115 @@ +/* + * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/impl/entity/EntityDeserializer.java $ + * $Revision: 560358 $ + * $Date: 2007-07-27 12:30:42 -0700 (Fri, 27 Jul 2007) $ + * + * ==================================================================== + * 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 org.apache.http.impl.entity; + +import java.io.IOException; + +import org.apache.http.Header; +import org.apache.http.HttpEntity; +import org.apache.http.HttpException; +import org.apache.http.HttpMessage; +import org.apache.http.entity.BasicHttpEntity; +import org.apache.http.entity.ContentLengthStrategy; +import org.apache.http.impl.io.ChunkedInputStream; +import org.apache.http.impl.io.ContentLengthInputStream; +import org.apache.http.impl.io.IdentityInputStream; +import org.apache.http.io.SessionInputBuffer; +import org.apache.http.protocol.HTTP; + +/** + * Default implementation of an entity deserializer. + * <p> + * This entity deserializer currently supports only "chunked" and "identitiy" transfer-coding</a> + * </p> + * + * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> + * + * @version $Revision: 560358 $ + * + * @since 4.0 + */ +public class EntityDeserializer { + + private final ContentLengthStrategy lenStrategy; + + public EntityDeserializer(final ContentLengthStrategy lenStrategy) { + super(); + if (lenStrategy == null) { + throw new IllegalArgumentException("Content length strategy may not be null"); + } + this.lenStrategy = lenStrategy; + } + + protected BasicHttpEntity doDeserialize( + final SessionInputBuffer inbuffer, + final HttpMessage message) throws HttpException, IOException { + BasicHttpEntity entity = new BasicHttpEntity(); + + long len = this.lenStrategy.determineLength(message); + if (len == ContentLengthStrategy.CHUNKED) { + entity.setChunked(true); + entity.setContentLength(-1); + entity.setContent(new ChunkedInputStream(inbuffer)); + } else if (len == ContentLengthStrategy.IDENTITY) { + entity.setChunked(false); + entity.setContentLength(-1); + entity.setContent(new IdentityInputStream(inbuffer)); + } else { + entity.setChunked(false); + entity.setContentLength(len); + entity.setContent(new ContentLengthInputStream(inbuffer, len)); + } + + Header contentTypeHeader = message.getFirstHeader(HTTP.CONTENT_TYPE); + if (contentTypeHeader != null) { + entity.setContentType(contentTypeHeader); + } + Header contentEncodingHeader = message.getFirstHeader(HTTP.CONTENT_ENCODING); + if (contentEncodingHeader != null) { + entity.setContentEncoding(contentEncodingHeader); + } + return entity; + } + + public HttpEntity deserialize( + final SessionInputBuffer inbuffer, + final HttpMessage message) throws HttpException, IOException { + if (inbuffer == null) { + throw new IllegalArgumentException("Session input buffer may not be null"); + } + if (message == null) { + throw new IllegalArgumentException("HTTP message may not be null"); + } + return doDeserialize(inbuffer, message); + } + +} |