bundles/org.simantics.lz4/src/org/simantics/lz4/Main.java

   1 package org.simantics.lz4;\r
   2 \r
   3 import java.io.UnsupportedEncodingException;\r
   4 \r
   5 import net.jpountz.lz4.LZ4Compressor;\r
   6 import net.jpountz.lz4.LZ4Factory;\r
   7 import net.jpountz.lz4.LZ4FastDecompressor;\r
   8 import net.jpountz.lz4.LZ4SafeDecompressor;\r
   9 \r
  10 public class Main {\r
  11 \r
  12         public static void main(String[] args) throws UnsupportedEncodingException {\r
  13                 LZ4Factory factory = LZ4Factory.fastestInstance();\r
  14 \r
  15                 byte[] data = "12345345234572".getBytes("UTF-8");\r
  16                 final int decompressedLength = data.length;\r
  17 \r
  18                 // compress data\r
  19                 LZ4Compressor compressor = factory.fastCompressor();\r
  20                 int maxCompressedLength = compressor.maxCompressedLength(decompressedLength);\r
  21                 byte[] compressed = new byte[maxCompressedLength];\r
  22                 int compressedLength = compressor.compress(data, 0, decompressedLength, compressed, 0, maxCompressedLength);\r
  23 \r
  24                 // decompress data\r
  25                 // - method 1: when the decompressed length is known\r
  26                 LZ4FastDecompressor decompressor = factory.fastDecompressor();\r
  27                 byte[] restored = new byte[decompressedLength];\r
  28                 int compressedLength2 = decompressor.decompress(compressed, 0, restored, 0, decompressedLength);\r
  29                 System.out.println(compressedLength == compressedLength2);\r
  30 \r
  31                 // - method 2: when the compressed length is known (a little slower)\r
  32                 // the destination buffer needs to be over-sized\r
  33                 LZ4SafeDecompressor decompressor2 = factory.safeDecompressor();\r
  34                 int decompressedLength2 = decompressor2.decompress(compressed, 0, compressedLength, restored, 0);\r
  35                 System.out.println(decompressedLength == decompressedLength2);\r
  36         }\r
  37 \r
  38 }\r