| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.tika.fork; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| class InputStreamProxy extends InputStream implements ForkProxy { |
| |
| /** Serial version UID */ |
| private static final long serialVersionUID = 4350939227765568438L; |
| |
| private final int resource; |
| |
| private transient DataInputStream input; |
| |
| private transient DataOutputStream output; |
| |
| public InputStreamProxy(int resource) { |
| this.resource = resource; |
| } |
| |
| public void init(DataInputStream input, DataOutputStream output) { |
| this.input = input; |
| this.output = output; |
| } |
| |
| @Override |
| public int read() throws IOException { |
| output.writeByte(ForkServer.RESOURCE); |
| output.writeByte(resource); |
| output.writeInt(1); |
| output.flush(); |
| int n = input.readInt(); |
| if (n == 1) { |
| return input.readUnsignedByte(); |
| } else { |
| return n; |
| } |
| } |
| |
| @Override |
| public int read(byte[] b, int off, int len) throws IOException { |
| output.writeByte(ForkServer.RESOURCE); |
| output.writeByte(resource); |
| output.writeInt(len); |
| output.flush(); |
| int n = input.readInt(); |
| if (n > 0) { |
| input.readFully(b, off, n); |
| } |
| return n; |
| } |
| |
| } |