CountingReadLine.java

/*
 * Copyright (c) 2008 Mozilla Foundation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a 
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the 
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
 * DEALINGS IN THE SOFTWARE.
 */

package nu.validator.batchresearch;

import java.io.BufferedReader;
import java.io.IOException;

class CountingReadLine {
    private int count = 0;
    
    private int round = 0;
    
    private final BufferedReader reader;

    /**
     * @param reader
     */
    public CountingReadLine(BufferedReader reader) {
        this.reader = reader;
    }

    /**
     * @return
     * @throws IOException
     * @see java.io.BufferedReader#readLine()
     */
    public synchronized String readLine() throws IOException {
        count++;
        int newround = (count / 100) * 100;
        if (round != newround) {
            System.out.println(newround);
            round = newround;
        }
        return reader.readLine();
    }
}