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/*
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 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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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.annotation.ThreadingBehavior;
import org.apache.http.annotation.Contract;
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;
import org.apache.http.util.Args;

/**
 * HTTP entity deserializer.
 * 

* This entity deserializer supports "chunked" and "identitiy" transfer-coding * and content length delimited content. *

* This class relies on a specific implementation of * {@link ContentLengthStrategy} to determine the content length or transfer * encoding of the entity. *

* This class generates an instance of {@link HttpEntity} based on * properties of the message. The content of the entity will be decoded * transparently for the consumer. * * @since 4.0 * * @deprecated (4.3) use {@link org.apache.http.impl.BHttpConnectionBase} */ @Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL) @Deprecated public class EntityDeserializer { private final ContentLengthStrategy lenStrategy; public EntityDeserializer(final ContentLengthStrategy lenStrategy) { super(); this.lenStrategy = Args.notNull(lenStrategy, "Content length strategy"); } /** * Creates a {@link BasicHttpEntity} based on properties of the given * message. The content of the entity is created by wrapping * {@link SessionInputBuffer} with a content decoder depending on the * transfer mechanism used by the message. *

* This method is called by the public * {@link #deserialize(SessionInputBuffer, HttpMessage)}. * * @param inbuffer the session input buffer. * @param message the message. * @return HTTP entity. * @throws HttpException in case of HTTP protocol violation. * @throws IOException in case of an I/O error. */ protected BasicHttpEntity doDeserialize( final SessionInputBuffer inbuffer, final HttpMessage message) throws HttpException, IOException { final BasicHttpEntity entity = new BasicHttpEntity(); final 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)); } final Header contentTypeHeader = message.getFirstHeader(HTTP.CONTENT_TYPE); if (contentTypeHeader != null) { entity.setContentType(contentTypeHeader); } final Header contentEncodingHeader = message.getFirstHeader(HTTP.CONTENT_ENCODING); if (contentEncodingHeader != null) { entity.setContentEncoding(contentEncodingHeader); } return entity; } /** * Creates an {@link HttpEntity} based on properties of the given message. * The content of the entity is created by wrapping * {@link SessionInputBuffer} with a content decoder depending on the * transfer mechanism used by the message. *

* The content of the entity is NOT retrieved by this method. * * @param inbuffer the session input buffer. * @param message the message. * @return HTTP entity. * @throws HttpException in case of HTTP protocol violation. * @throws IOException in case of an I/O error. */ public HttpEntity deserialize( final SessionInputBuffer inbuffer, final HttpMessage message) throws HttpException, IOException { Args.notNull(inbuffer, "Session input buffer"); Args.notNull(message, "HTTP message"); return doDeserialize(inbuffer, message); } }





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