de.schlichtherle.truezip.zip.Jdk6Inflater Maven / Gradle / Ivy

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The file system driver family for ZIP and related archive file types. Add the JAR artifact of this module to the run time class path to make its file system drivers available for service location in the client API modules.

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/*
 * Copyright (C) 2005-2013 Schlichtherle IT Services.
 * All rights reserved. Use is subject to license terms.
 */
package de.schlichtherle.truezip.zip;

import java.util.zip.DataFormatException;
import java.util.zip.Inflater;

/**
 * Fixes 32 bit field size in JDK 6 implementation of
 * {@link java.util.zip.Inflater}.
 *
 * @author  Christian Schlichtherle
 */
final class Jdk6Inflater extends Inflater {
    private long read = 0, written = 0;

    Jdk6Inflater(boolean nowrap) {
        super(nowrap);
    }

    @Override
    public void setInput(byte[] b, int off, int len) {
        super.setInput(b, off, len);
        read += len;
    }

    @Override
    public int inflate(byte[] b, int off, int len) throws DataFormatException {
        int ilen = super.inflate(b, off, len);
        written += ilen;
        return ilen;
    }

    @Override
    public long getBytesRead() {
        return read - getRemaining();
    }

    @Override
    public long getBytesWritten() {
        return written;
    }

    @Override
    public void reset() {
        super.reset();
        read = written = 0;
    }
}