mirror of
https://github.com/ProjectSWGCore/Holocore.git
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62 lines
3.2 KiB
Java
62 lines
3.2 KiB
Java
/************************************************************************************
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* Copyright (c) 2015 /// Project SWG /// www.projectswg.com *
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* *
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* ProjectSWG is the first NGE emulator for Star Wars Galaxies founded on *
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* July 7th, 2011 after SOE announced the official shutdown of Star Wars Galaxies. *
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* Our goal is to create an emulator which will provide a server for players to *
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* continue playing a game similar to the one they used to play. We are basing *
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* it on the final publish of the game prior to end-game events. *
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* *
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* This file is part of Holocore. *
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* *
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* -------------------------------------------------------------------------------- *
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* *
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* Holocore is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Affero General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* Holocore 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 Affero General Public License for more details. *
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* *
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* You should have received a copy of the GNU Affero General Public License *
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* along with Holocore. If not, see <http://www.gnu.org/licenses/>. *
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* *
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***********************************************************************************/
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package network.encryption;
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import net.jpountz.lz4.LZ4Compressor;
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import net.jpountz.lz4.LZ4Factory;
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import net.jpountz.lz4.LZ4SafeDecompressor;
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public class Compression {
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private static final LZ4Compressor COMPRESSOR = LZ4Factory.safeInstance().highCompressor();
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private static final LZ4SafeDecompressor DECOMPRESSOR = LZ4Factory.safeInstance().safeDecompressor();
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public static int getMaxCompressedLength(int len) {
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return COMPRESSOR.maxCompressedLength(len);
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}
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public static int compress(byte [] data, byte [] buffer) {
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return COMPRESSOR.compress(data, buffer);
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}
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public static byte [] decompress(byte [] data) {
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return decompress(data, data.length * 10);
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}
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public static byte [] decompress(byte [] data, int bufferSize) {
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byte [] restored = new byte[bufferSize];
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int length = DECOMPRESSOR.decompress(data, restored);
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if (length == bufferSize)
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return restored;
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byte [] ret = new byte[length];
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System.arraycopy(restored, 0, ret, 0, length);
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return ret;
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}
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}
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