001/*
002 * IzPack - Copyright 2001-2005 Julien Ponge, All Rights Reserved.
003 * 
004 * http://www.izforge.com/izpack/
005 * http://developer.berlios.de/projects/izpack/
006 * 
007 * Copyright 2001 Johannes Lehtinen
008 * Copyright 2002 Paul Wilkinson
009 * 
010 * Licensed under the Apache License, Version 2.0 (the "License");
011 * you may not use this file except in compliance with the License.
012 * You may obtain a copy of the License at
013 * 
014 *     http://www.apache.org/licenses/LICENSE-2.0
015 *     
016 * Unless required by applicable law or agreed to in writing, software
017 * distributed under the License is distributed on an "AS IS" BASIS,
018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
019 * See the License for the specific language governing permissions and
020 * limitations under the License.
021 */
022
023package com.izforge.izpack.compiler;
024
025import java.io.IOException;
026import java.io.OutputStream;
027
028/**
029 * Stream which countes the bytes written through it. Be sure to flush before checking size.
030 */
031public class ByteCountingOutputStream extends OutputStream
032{
033
034    private long count;
035
036    private OutputStream os;
037
038    public ByteCountingOutputStream(OutputStream os)
039    {
040        this.os = os;
041    }
042
043    public void write(byte[] b, int off, int len) throws IOException
044    {
045        os.write(b, off, len);
046        count += len;
047    }
048
049    public void write(byte[] b) throws IOException
050    {
051        os.write(b);
052        count += b.length;
053    }
054
055    public void write(int b) throws IOException
056    {
057        os.write(b);
058        count += 4;
059    }
060
061    public void close() throws IOException
062    {
063        os.close();
064    }
065
066    public void flush() throws IOException
067    {
068        os.flush();
069    }
070
071    public long getByteCount()
072    {
073        return count;
074    }
075}