38 lines
981 B
Java
Executable File
38 lines
981 B
Java
Executable File
/*
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* LZMA2Decoder
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*
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* Author: Lasse Collin <[email protected]>
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*
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* This file has been put into the public domain.
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* You can do whatever you want with this file.
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*/
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package org.tukaani.xz;
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import java.io.InputStream;
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class LZMA2Decoder extends LZMA2Coder implements FilterDecoder {
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private int dictSize;
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LZMA2Decoder(byte[] props) throws UnsupportedOptionsException {
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// Up to 1.5 GiB dictionary is supported. The bigger ones
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// are too big for int.
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if (props.length != 1 || (props[0] & 0xFF) > 37)
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throw new UnsupportedOptionsException(
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"Unsupported LZMA2 properties");
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dictSize = 2 | (props[0] & 1);
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dictSize <<= (props[0] >>> 1) + 11;
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}
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@Override
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public int getMemoryUsage() {
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return LZMA2InputStream.getMemoryUsage(dictSize);
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}
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@Override
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public InputStream getInputStream(InputStream in) {
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return new LZMA2InputStream(in, dictSize);
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}
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}
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