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author Miodrag Milanovic <mmicko@gmail.com>2015-01-11 08:10:25 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2015-01-11 08:10:25 +0100
commit6a23c2f3b766cf4fc7028628f76b5ff9396383f0 (patch)
treea01e16637118ae0c80f337119898bdf18f081e24 /3rdparty/lzma/Java/SevenZip/CRC.java
parent45ac9b351e0076c371de4c7453f59567b27b1cb6 (diff)
Added full lzma sdk source (nw)
Diffstat (limited to '3rdparty/lzma/Java/SevenZip/CRC.java')
-rw-r--r--3rdparty/lzma/Java/SevenZip/CRC.java52
1 files changed, 52 insertions, 0 deletions
diff --git a/3rdparty/lzma/Java/SevenZip/CRC.java b/3rdparty/lzma/Java/SevenZip/CRC.java
new file mode 100644
index 00000000000..c55e33cc1fd
--- /dev/null
+++ b/3rdparty/lzma/Java/SevenZip/CRC.java
@@ -0,0 +1,52 @@
+// SevenZip/CRC.java
+
+package SevenZip;
+
+public class CRC
+{
+ static public int[] Table = new int[256];
+
+ static
+ {
+ for (int i = 0; i < 256; i++)
+ {
+ int r = i;
+ for (int j = 0; j < 8; j++)
+ if ((r & 1) != 0)
+ r = (r >>> 1) ^ 0xEDB88320;
+ else
+ r >>>= 1;
+ Table[i] = r;
+ }
+ }
+
+ int _value = -1;
+
+ public void Init()
+ {
+ _value = -1;
+ }
+
+ public void Update(byte[] data, int offset, int size)
+ {
+ for (int i = 0; i < size; i++)
+ _value = Table[(_value ^ data[offset + i]) & 0xFF] ^ (_value >>> 8);
+ }
+
+ public void Update(byte[] data)
+ {
+ int size = data.length;
+ for (int i = 0; i < size; i++)
+ _value = Table[(_value ^ data[i]) & 0xFF] ^ (_value >>> 8);
+ }
+
+ public void UpdateByte(int b)
+ {
+ _value = Table[(_value ^ b) & 0xFF] ^ (_value >>> 8);
+ }
+
+ public int GetDigest()
+ {
+ return _value ^ (-1);
+ }
+}