1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 20 package org.apache.commons.compress.compressors.pack200; 21 22 import java.io.File; 23 import java.io.FilterInputStream; 24 import java.io.IOException; 25 import java.io.InputStream; 26 import java.nio.file.Files; 27 28 /** 29 * StreamSwitcher that caches all data written to the output side in 30 * a temporary file. 31 * @since 1.3 32 */ 33 class TempFileCachingStreamBridge extends StreamBridge { 34 private final File f; 35 TempFileCachingStreamBridge()36 TempFileCachingStreamBridge() throws IOException { 37 f = File.createTempFile("commons-compress", "packtemp"); 38 f.deleteOnExit(); 39 out = Files.newOutputStream(f.toPath()); 40 } 41 42 @Override getInputView()43 InputStream getInputView() throws IOException { 44 out.close(); 45 return new FilterInputStream(Files.newInputStream(f.toPath())) { 46 @Override 47 public void close() throws IOException { 48 try { 49 super.close(); 50 } finally { 51 f.delete(); 52 } 53 } 54 }; 55 } 56 } 57