| /******************************************************************************* |
| * Copyright (C) 2007 The University of Manchester |
| * |
| * Modifications to the initial code base are copyright of their |
| * respective authors, or their employers as appropriate. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public License |
| * as published by the Free Software Foundation; either version 2.1 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| ******************************************************************************/ |
| package net.sf.taverna.t2.lang.io; |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| |
| import org.apache.log4j.Logger; |
| |
| /** |
| * Devours an input stream and allows the contents to be read as a String once |
| * the stream has completed. |
| * |
| * @author Tom Oinn |
| * @author Alan R Williams |
| */ |
| public class StreamDevourer extends Thread { |
| |
| private static Logger logger = Logger.getLogger(StreamDevourer.class); |
| |
| private static byte[] newLine = System.getProperty("line.separator").getBytes(); |
| |
| BufferedReader br; |
| |
| ByteArrayOutputStream output; |
| |
| /** |
| * Returns the current value of the internal ByteArrayOutputStream |
| */ |
| @Override |
| public String toString() { |
| return output.toString(); |
| } |
| |
| /** |
| * Waits for the stream to close then returns the String representation of |
| * its contents (this is equivalent to doing a join then calling toString) |
| */ |
| public String blockOnOutput() { |
| try { |
| this.join(); |
| return output.toString(); |
| } catch (InterruptedException ie) { |
| logger.error("Interrupted", ie); |
| interrupt(); |
| return ""; |
| } |
| } |
| |
| /** |
| * Create the StreamDevourer and point it at an InputStream to consume |
| */ |
| public StreamDevourer(InputStream is) { |
| super("StreamDevourer"); |
| this.br = new BufferedReader(new InputStreamReader(is)); |
| this.output = new ByteArrayOutputStream(); |
| } |
| |
| /** |
| * When started this Thread will copy all data from the InputStream into a |
| * ByteArrayOutputStream via a BufferedReader. Because of the use of the |
| * BufferedReader this is only really appropriate for streams of textual |
| * data |
| */ |
| @Override |
| public void run() { |
| try { |
| String line = null; |
| while ((line = br.readLine()) != null) { |
| // && line.endsWith("</svg>") == false) { |
| if (line.endsWith("\\") && !line.endsWith("\\\\")) { |
| line = line.substring(0, line.length() - 1); |
| output.write(line.getBytes()); |
| } else { |
| output.write(line.getBytes()); |
| output.write(newLine); |
| } |
| } |
| br.close(); |
| } catch (IOException ioe) { |
| logger.error(ioe); |
| } |
| } |
| |
| } |