| /* |
| * 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 |
| * |
| * https://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.tools.ant; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * |
| * Passes input requests to the project object for demultiplexing into |
| * individual tasks and threads. |
| * |
| * @since Ant 1.6 |
| */ |
| public class DemuxInputStream extends InputStream { |
| |
| private static final int MASK_8BIT = 0xFF; |
| /** |
| * The project to from which to get input. |
| */ |
| private Project project; |
| |
| /** |
| * Create a DemuxInputStream for the given project |
| * |
| * @param project the project instance |
| */ |
| public DemuxInputStream(Project project) { |
| this.project = project; |
| } |
| |
| /** |
| * Read a byte from the project's demultiplexed input. |
| * @return the next byte |
| * @throws IOException on error |
| */ |
| @Override |
| public int read() throws IOException { |
| byte[] buffer = new byte[1]; |
| if (project.demuxInput(buffer, 0, 1) == -1) { |
| return -1; |
| } |
| return buffer[0] & MASK_8BIT; |
| } |
| |
| |
| /** |
| * Read bytes from the project's demultiplexed input. |
| * @param buffer an array of bytes to read into |
| * @param offset the offset in the array of bytes |
| * @param length the number of bytes in the array |
| * @return the number of bytes read |
| * @throws IOException on error |
| */ |
| @Override |
| public int read(byte[] buffer, int offset, int length) throws IOException { |
| return project.demuxInput(buffer, offset, length); |
| } |
| |
| } |