| /********************************************************************** |
| * Copyright (c) 2002,2003 QNX Software Systems and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * QNX Software Systems - Initial API and implementation |
| ***********************************************************************/ |
| package org.eclipse.cdt.make.internal.core; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| public class StreamMonitor extends OutputStream { |
| |
| IProgressMonitor monitor; |
| OutputStream console; |
| public final int fTotalWork; |
| private int halfWay; |
| private int currentIncrement = 2; |
| private int nextProgress = currentIncrement; |
| private int worked = 0; |
| |
| public StreamMonitor(IProgressMonitor mon, OutputStream cos, int totalWork) { |
| monitor = mon; |
| console = cos; |
| fTotalWork = totalWork; |
| halfWay = fTotalWork / 2; |
| monitor.beginTask("", fTotalWork); |
| } |
| |
| private void progressUpdate() { |
| if (--nextProgress <= 0) { |
| //we have exhausted the current increment, so report progress |
| if (fTotalWork > worked) { |
| monitor.worked(1); |
| } |
| worked++; |
| if (worked >= halfWay) { |
| //we have passed the current halfway point, so double the |
| //increment and reset the halfway point. |
| currentIncrement *= 2; |
| halfWay += (fTotalWork - halfWay) / 2; |
| } |
| //reset the progress counter to another full increment |
| nextProgress = currentIncrement; |
| } |
| } |
| /** |
| * @see java.io.OutputStream#close() |
| */ |
| public void close() throws IOException { |
| if (console != null) { |
| console.close(); |
| } |
| monitor.done(); |
| } |
| |
| /** |
| * @see java.io.OutputStream#flush() |
| */ |
| public void flush() throws IOException { |
| if (console != null) { |
| console.flush(); |
| } |
| } |
| |
| /** |
| * @see java.io.OutputStream#write(int) |
| */ |
| public synchronized void write(int b) throws IOException { |
| if (console != null) { |
| console.write(b); |
| } |
| progressUpdate(); |
| } |
| |
| /** |
| * @see java.io.OutputStream#write(...) |
| */ |
| public synchronized void write(byte[] b, int off, int len) throws IOException { |
| if (b == null) { |
| throw new NullPointerException(); |
| } else if (off != 0 || (len < 0) || (len > b.length)) { |
| throw new IndexOutOfBoundsException(); |
| } else if (len == 0) { |
| return; |
| } |
| if (console != null) { |
| console.write(b, off, len); |
| } |
| progressUpdate(); |
| } |
| |
| public int getWorkDone() { |
| return worked; |
| } |
| } |