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97 lines
3.1 KiB
97 lines
3.1 KiB
/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.http.client.entity;
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import java.io.IOException;
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import java.io.InputStream;
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import org.apache.http.Header;
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import org.apache.http.HttpEntity;
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/**
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* {@link org.apache.http.entity.HttpEntityWrapper} responsible for handling
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* deflate Content Coded responses. In RFC2616 terms, <code>deflate</code>
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* means a <code>zlib</code> stream as defined in RFC1950. Some server
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* implementations have misinterpreted RFC2616 to mean that a
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* <code>deflate</code> stream as defined in RFC1951 should be used
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* (or maybe they did that since that's how IE behaves?). It's confusing
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* that <code>deflate</code> in HTTP 1.1 means <code>zlib</code> streams
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* rather than <code>deflate</code> streams. We handle both types in here,
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* since that's what is seen on the internet. Moral - prefer
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* <code>gzip</code>!
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*
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* @see GzipDecompressingEntity
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*
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* @since 4.1
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*/
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public class DeflateDecompressingEntity extends DecompressingEntity {
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/**
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* Creates a new {@link DeflateDecompressingEntity} which will wrap the specified
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* {@link HttpEntity}.
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*
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* @param entity
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* a non-null {@link HttpEntity} to be wrapped
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*/
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public DeflateDecompressingEntity(final HttpEntity entity) {
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super(entity);
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}
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/**
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* Returns the non-null InputStream that should be returned to by all requests to
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* {@link #getContent()}.
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*
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* @return a non-null InputStream
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* @throws IOException if there was a problem
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*/
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@Override
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InputStream decorate(final InputStream wrapped) throws IOException {
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return new DeflateInputStream(wrapped);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public Header getContentEncoding() {
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/* This HttpEntityWrapperHC4 has dealt with the Content-Encoding. */
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return null;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public long getContentLength() {
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/* Length of inflated content is unknown. */
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return -1;
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}
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}
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