| /******************************************************************************* |
| * Copyright (c) 2011 Tasktop Technologies |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * David Green - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.wikitext.internal.util; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| |
| /** |
| * a reader that concatenates character streams |
| * |
| * @author David Green |
| */ |
| public class ConcatenatingReader extends Reader { |
| |
| private final Reader[] readers; |
| |
| private int index = 0; |
| |
| public ConcatenatingReader(Reader... readers) { |
| this.readers = readers; |
| } |
| |
| @Override |
| public int read(char[] cbuf, int off, int len) throws IOException { |
| if (index < readers.length) { |
| int i; |
| do { |
| i = readers[index].read(cbuf, off, len); |
| if (i == -1) { |
| ++index; |
| } |
| } while (i == -1 && index < readers.length); |
| return i; |
| } |
| return -1; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| for (int x = 0; x < readers.length; ++x) { |
| readers[x].close(); |
| } |
| } |
| |
| } |