mobile/android/thirdparty/ch/boye/httpclientandroidlib/client/entity/DecompressingEntity.java

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/client/entity/DecompressingEntity.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,102 @@
     1.4 +/*
     1.5 + * ====================================================================
     1.6 + *
     1.7 + *  Licensed to the Apache Software Foundation (ASF) under one or more
     1.8 + *  contributor license agreements.  See the NOTICE file distributed with
     1.9 + *  this work for additional information regarding copyright ownership.
    1.10 + *  The ASF licenses this file to You under the Apache License, Version 2.0
    1.11 + *  (the "License"); you may not use this file except in compliance with
    1.12 + *  the License.  You may obtain a copy of the License at
    1.13 + *
    1.14 + *      http://www.apache.org/licenses/LICENSE-2.0
    1.15 + *
    1.16 + *  Unless required by applicable law or agreed to in writing, software
    1.17 + *  distributed under the License is distributed on an "AS IS" BASIS,
    1.18 + *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.19 + *  See the License for the specific language governing permissions and
    1.20 + *  limitations under the License.
    1.21 + * ====================================================================
    1.22 + *
    1.23 + * This software consists of voluntary contributions made by many
    1.24 + * individuals on behalf of the Apache Software Foundation.  For more
    1.25 + * information on the Apache Software Foundation, please see
    1.26 + * <http://www.apache.org/>.
    1.27 + *
    1.28 + */
    1.29 +package ch.boye.httpclientandroidlib.client.entity;
    1.30 +
    1.31 +import java.io.IOException;
    1.32 +import java.io.InputStream;
    1.33 +import java.io.OutputStream;
    1.34 +
    1.35 +import ch.boye.httpclientandroidlib.HttpEntity;
    1.36 +import ch.boye.httpclientandroidlib.entity.HttpEntityWrapper;
    1.37 +
    1.38 +/**
    1.39 + * Common base class for decompressing {@link HttpEntity} implementations.
    1.40 + *
    1.41 + * @since 4.1
    1.42 + */
    1.43 +abstract class DecompressingEntity extends HttpEntityWrapper {
    1.44 +
    1.45 +    /**
    1.46 +     * Default buffer size.
    1.47 +     */
    1.48 +    private static final int BUFFER_SIZE = 1024 * 2;
    1.49 +
    1.50 +    /**
    1.51 +     * DecompressingEntities are not repeatable, so they will return the same
    1.52 +     * InputStream instance when {@link #getContent()} is called.
    1.53 +     */
    1.54 +    private InputStream content;
    1.55 +
    1.56 +    /**
    1.57 +     * Creates a new {@link DecompressingEntity}.
    1.58 +     *
    1.59 +     * @param wrapped
    1.60 +     *            the non-null {@link HttpEntity} to be wrapped
    1.61 +     */
    1.62 +    public DecompressingEntity(final HttpEntity wrapped) {
    1.63 +        super(wrapped);
    1.64 +    }
    1.65 +
    1.66 +    abstract InputStream getDecompressingInputStream(final InputStream wrapped) throws IOException;
    1.67 +
    1.68 +    /**
    1.69 +     * {@inheritDoc}
    1.70 +     */
    1.71 +    @Override
    1.72 +    public InputStream getContent() throws IOException {
    1.73 +        if (wrappedEntity.isStreaming()) {
    1.74 +            if (content == null) {
    1.75 +                content = getDecompressingInputStream(wrappedEntity.getContent());
    1.76 +            }
    1.77 +            return content;
    1.78 +        } else {
    1.79 +            return getDecompressingInputStream(wrappedEntity.getContent());
    1.80 +        }
    1.81 +    }
    1.82 +
    1.83 +    /**
    1.84 +     * {@inheritDoc}
    1.85 +     */
    1.86 +    @Override
    1.87 +    public void writeTo(OutputStream outstream) throws IOException {
    1.88 +        if (outstream == null) {
    1.89 +            throw new IllegalArgumentException("Output stream may not be null");
    1.90 +        }
    1.91 +        InputStream instream = getContent();
    1.92 +        try {
    1.93 +            byte[] buffer = new byte[BUFFER_SIZE];
    1.94 +
    1.95 +            int l;
    1.96 +
    1.97 +            while ((l = instream.read(buffer)) != -1) {
    1.98 +                outstream.write(buffer, 0, l);
    1.99 +            }
   1.100 +        } finally {
   1.101 +            instream.close();
   1.102 +        }
   1.103 +    }
   1.104 +
   1.105 +}

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