001// *************************************************************************************************************************** 002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * 003// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * 004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance * 005// * with the License. You may obtain a copy of the License at * 006// * * 007// * http://www.apache.org/licenses/LICENSE-2.0 * 008// * * 009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an * 010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * 011// * specific language governing permissions and limitations under the License. * 012// *************************************************************************************************************************** 013package org.apache.juneau.encoders; 014 015import java.io.*; 016import java.util.zip.*; 017 018/** 019 * Encoder for handling <js>"gzip"</js> encoding and decoding. 020 */ 021public class GzipEncoder extends Encoder { 022 023 @Override /* Encoder */ 024 public OutputStream getOutputStream(OutputStream os) throws IOException { 025 return new FinishableGZIPOutputStream(os); 026 } 027 028 @Override /* Encoder */ 029 public InputStream getInputStream(InputStream is) throws IOException { 030 return new GZIPInputStream(is); 031 } 032 033 /** 034 * Returns <code>[<js>"gzip"</js>]</code>. 035 */ 036 @Override /* Encoder */ 037 public String[] getCodings() { 038 return new String[]{"gzip"}; 039 } 040 041 private static class FinishableGZIPOutputStream extends GZIPOutputStream implements Finishable { 042 FinishableGZIPOutputStream(OutputStream out) throws IOException { 043 super(out); 044 } 045 } 046}