63 lines
1.7 KiB
Java
63 lines
1.7 KiB
Java
/*
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* opsu! - an open-source osu! client
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* Copyright (C) 2014, 2015 Jeffrey Han
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*
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* opsu! is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* opsu! is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with opsu!. If not, see <http://www.gnu.org/licenses/>.
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*/
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package itdelatrisu.opsu.downloads;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.channels.ReadableByteChannel;
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/**
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* Wrapper for a ReadableByteChannel that stores the number of bytes read.
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* @author par (http://stackoverflow.com/a/11068356)
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*/
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public class ReadableByteChannelWrapper implements ReadableByteChannel {
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/** The wrapped ReadableByteChannel. */
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private final ReadableByteChannel rbc;
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/** The number of bytes read. */
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private long bytesRead;
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/**
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* Constructor.
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* @param rbc the ReadableByteChannel to wrap
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*/
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public ReadableByteChannelWrapper(ReadableByteChannel rbc) {
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this.rbc = rbc;
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}
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@Override
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public void close() throws IOException { rbc.close(); }
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@Override
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public boolean isOpen() { return rbc.isOpen(); }
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@Override
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public int read(ByteBuffer bb) throws IOException {
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int bytes;
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if ((bytes = rbc.read(bb)) > 0)
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bytesRead += bytes;
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return bytes;
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}
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/**
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* Returns the number of bytes read so far.
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*/
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public long getReadSoFar() { return bytesRead; }
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}
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