
/* ====================================================================
   Copyright 2002-2004   Apache Software Foundation

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
==================================================================== */
        

package org.apache.poi.poifs.filesystem;

import java.io.*;
import java.util.Random;

/**
 * Returns a random amount of requested data. Used to check conformance with
 * InputStream API contracts.
 */
public class SlowInputStream extends FilterInputStream
{
    private Random r = new Random(0);
    
    public SlowInputStream(InputStream in) {
        super(in);
    }

    public int read(byte[] b, int off, int len) throws IOException {
        return super.read(b, off, r.nextInt(len) + 1);
    }
}
