001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *  http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.geronimo.javamail.util;
021    
022    import java.io.IOException;
023    import java.io.OutputStream;
024    
025    /**
026     * An implementation of an OutputStream just counts
027     * the number of bytes written to the stream. 
028     * @version $Rev: 671217 $ $Date: 2008-06-24 11:39:52 -0400 (Tue, 24 Jun 2008) $
029     */
030    public class CountingOutputStream extends OutputStream {
031        // the counting accumulator 
032        int count = 0; 
033    
034        // in order for this to work, we only need override the single character
035        // form, as the others
036        // funnel through this one by default.
037        public void write(int ch) throws IOException {
038            // just increment the count 
039            count++; 
040        }
041        
042        
043        /**
044         * Get the current accumulator total for this stream. 
045         * 
046         * @return The current count. 
047         */
048        public int getCount() {
049            return count; 
050        }
051        
052        
053        /**
054         * Reset the counter to zero. 
055         */
056        public void reset() {
057            count = 0; 
058        }
059    }
060