88 lines
3.1 KiB
Java
88 lines
3.1 KiB
Java
/*
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* Copyright (c) 2012, 2018 Oracle and/or its affiliates. All rights reserved.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v. 2.0, which is available at
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* http://www.eclipse.org/legal/epl-2.0.
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*
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* This Source Code may also be made available under the following Secondary
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* Licenses when the conditions for such availability set forth in the
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* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
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* version 2 with the GNU Classpath Exception, which is available at
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* https://www.gnu.org/software/classpath/license.html.
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*
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* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
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*/
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package org.telegram.telegrambots.updatesreceivers;
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import jakarta.annotation.Priority;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import javax.ws.rs.Priorities;
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import javax.ws.rs.core.HttpHeaders;
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import org.apache.commons.compress.compressors.CompressorException;
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import org.apache.commons.compress.compressors.CompressorStreamFactory;
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import org.glassfish.jersey.spi.ContentEncoder;
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/**
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* Compression encoding support. Interceptor that encodes the output or decodes the input if
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* {@link HttpHeaders#CONTENT_ENCODING Content-Encoding header} value equals to most compression formats.
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*
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* @author Andrea Cavalli
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*/
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@Priority(Priorities.ENTITY_CODER)
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public class CompressionEncoder extends ContentEncoder {
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private static final CompressorStreamFactory factory = new CompressorStreamFactory();
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/**
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* Initialize Encoder.
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*/
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public CompressionEncoder() {
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super("deflate", "deflate64", "gzip", "zstd", "lz4", "lzma");
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}
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private String translateEncoding(String contentEncoding) throws IOException {
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switch (contentEncoding) {
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case "deflate":
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return CompressorStreamFactory.DEFLATE;
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case "deflate64":
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return CompressorStreamFactory.DEFLATE64;
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case "gzip":
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return CompressorStreamFactory.GZIP;
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case "zstd":
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return CompressorStreamFactory.ZSTANDARD;
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case "lz4":
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return CompressorStreamFactory.LZ4_BLOCK;
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case "lzma":
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return CompressorStreamFactory.LZMA;
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default:
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throw new IOException("Unsupported encoding " + contentEncoding);
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}
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}
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@Override
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public InputStream decode(String contentEncoding, InputStream encodedStream)
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throws IOException {
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try {
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String enc = translateEncoding(contentEncoding);
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return factory.createCompressorInputStream(enc, encodedStream);
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} catch (CompressorException e) {
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throw new IOException(e);
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}
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}
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@Override
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public OutputStream encode(String contentEncoding, OutputStream entityStream)
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throws IOException {
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try {
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String enc = translateEncoding(contentEncoding);
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return factory.createCompressorOutputStream(enc, entityStream);
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} catch (CompressorException e) {
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throw new IOException(e);
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}
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}
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}
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