misc/libphysfs/lzma/CS/7zip/Compress/LZMA/LzmaBase.cs
changeset 13881 99b265e0d1d0
parent 13880 5f819b90d479
child 13882 b172a5d40eee
--- a/misc/libphysfs/lzma/CS/7zip/Compress/LZMA/LzmaBase.cs	Thu Oct 11 23:43:31 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,76 +0,0 @@
-// LzmaBase.cs
-
-namespace SevenZip.Compression.LZMA
-{
-	internal abstract class Base
-	{
-		public const uint kNumRepDistances = 4;
-		public const uint kNumStates = 12;
-
-		// static byte []kLiteralNextStates  = {0, 0, 0, 0, 1, 2, 3, 4,  5,  6,   4, 5};
-		// static byte []kMatchNextStates    = {7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10};
-		// static byte []kRepNextStates      = {8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11};
-		// static byte []kShortRepNextStates = {9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11};
-
-		public struct State
-		{
-			public uint Index;
-			public void Init() { Index = 0; }
-			public void UpdateChar()
-			{
-				if (Index < 4) Index = 0;
-				else if (Index < 10) Index -= 3;
-				else Index -= 6;
-			}
-			public void UpdateMatch() { Index = (uint)(Index < 7 ? 7 : 10); }
-			public void UpdateRep() { Index = (uint)(Index < 7 ? 8 : 11); }
-			public void UpdateShortRep() { Index = (uint)(Index < 7 ? 9 : 11); }
-			public bool IsCharState() { return Index < 7; }
-		}
-
-		public const int kNumPosSlotBits = 6;
-		public const int kDicLogSizeMin = 0;
-		// public const int kDicLogSizeMax = 30;
-		// public const uint kDistTableSizeMax = kDicLogSizeMax * 2;
-
-		public const int kNumLenToPosStatesBits = 2; // it's for speed optimization
-		public const uint kNumLenToPosStates = 1 << kNumLenToPosStatesBits;
-
-		public const uint kMatchMinLen = 2;
-
-		public static uint GetLenToPosState(uint len)
-		{
-			len -= kMatchMinLen;
-			if (len < kNumLenToPosStates)
-				return len;
-			return (uint)(kNumLenToPosStates - 1);
-		}
-
-		public const int kNumAlignBits = 4;
-		public const uint kAlignTableSize = 1 << kNumAlignBits;
-		public const uint kAlignMask = (kAlignTableSize - 1);
-
-		public const uint kStartPosModelIndex = 4;
-		public const uint kEndPosModelIndex = 14;
-		public const uint kNumPosModels = kEndPosModelIndex - kStartPosModelIndex;
-
-		public const uint kNumFullDistances = 1 << ((int)kEndPosModelIndex / 2);
-
-		public const uint kNumLitPosStatesBitsEncodingMax = 4;
-		public const uint kNumLitContextBitsMax = 8;
-
-		public const int kNumPosStatesBitsMax = 4;
-		public const uint kNumPosStatesMax = (1 << kNumPosStatesBitsMax);
-		public const int kNumPosStatesBitsEncodingMax = 4;
-		public const uint kNumPosStatesEncodingMax = (1 << kNumPosStatesBitsEncodingMax);
-
-		public const int kNumLowLenBits = 3;
-		public const int kNumMidLenBits = 3;
-		public const int kNumHighLenBits = 8;
-		public const uint kNumLowLenSymbols = 1 << kNumLowLenBits;
-		public const uint kNumMidLenSymbols = 1 << kNumMidLenBits;
-		public const uint kNumLenSymbols = kNumLowLenSymbols + kNumMidLenSymbols +
-				(1 << kNumHighLenBits);
-		public const uint kMatchMaxLen = kMatchMinLen + kNumLenSymbols - 1;
-	}
-}