InputOutputStreamWrapper.java 2.12 KB
Newer Older
Alex Wenckus's avatar
Alex Wenckus committed
1
/**
2 3 4
 * $RCSfile$
 * $Revision: 3144 $
 * $Date: 2005-12-01 14:20:11 -0300 (Thu, 01 Dec 2005) $
Alex Wenckus's avatar
Alex Wenckus committed
5
 *
6 7
 * Copyright (C) 2004-2008 Jive Software. All rights reserved.
 *
8 9 10 11 12 13 14 15 16 17 18
 * 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.
Alex Wenckus's avatar
Alex Wenckus committed
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
 */
package org.jivesoftware.util;

import java.io.InputStream;
import java.io.OutputStream;
import java.util.concurrent.Callable;

/**
 * Callable which will read from an input stream and write to an output stream.
 *
 * @author Alexander Wenckus
 */
public class InputOutputStreamWrapper implements Callable {
    private static final int DEFAULT_BUFFER_SIZE = 8000;

    private long amountWritten = 0;
    private int bufferSize;
    private InputStream in;
    private OutputStream out;

    public InputOutputStreamWrapper(InputStream in, OutputStream out, int bufferSize) {
        if(bufferSize <= 0) {
            bufferSize = DEFAULT_BUFFER_SIZE;
        }

        this.bufferSize = bufferSize;
        this.in = in;
        this.out = out;
    }

    public InputOutputStreamWrapper(InputStream in, OutputStream out) {
        this(in, out, DEFAULT_BUFFER_SIZE);
    }

    public Object call() throws Exception {
        final byte[] b = new byte[bufferSize];
        int count = 0;
        amountWritten = 0;

        do {
            // write to the output stream
            out.write(b, 0, count);

            amountWritten += count;

            // read more bytes from the input stream
            count = in.read(b);
        } while (count >= 0);

        return amountWritten;
    }

    public long getAmountWritten() {
        return amountWritten;
    }
}