ch.cyberduck.core.io.BufferOutputStream.java Source code

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Here is the source code for ch.cyberduck.core.io.BufferOutputStream.java

Source

package ch.cyberduck.core.io;

/*
 * Copyright (c) 2002-2017 iterate GmbH. All rights reserved.
 * https://cyberduck.io/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

import org.apache.commons.io.output.NullOutputStream;
import org.apache.commons.io.output.ProxyOutputStream;

import java.io.IOException;
import java.io.OutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;

public class BufferOutputStream extends ProxyOutputStream {
    private static final Logger log = Logger.getLogger(BufferOutputStream.class.getName());

    private final Buffer buffer;

    private Long offset;

    public BufferOutputStream(final Buffer buffer) {
        this(new NullOutputStream(), buffer, 0L);
    }

    public BufferOutputStream(final Buffer buffer, final Long offset) {
        this(new NullOutputStream(), buffer, offset);
    }

    public BufferOutputStream(final OutputStream proxy, final Buffer buffer, final Long offset) {
        super(proxy);
        this.buffer = buffer;
        this.offset = offset;
    }

    @Override
    public void write(byte[] buffer) throws IOException {
        this.write(buffer, 0, buffer.length);
    }

    @Override
    public void write(final byte[] bytes, final int off, final int len) throws IOException {
        if (log.isLoggable(Level.FINE)) {
            log.fine(String.format("Buffer %d bytes at offset %d", len, offset));
        }
        final byte[] chunk = new byte[len];
        System.arraycopy(bytes, off, chunk, 0, len);
        buffer.write(chunk, offset);
        super.write(bytes, off, len);
    }

    @Override
    protected void afterWrite(final int n) throws IOException {
        offset += n;
    }
}