Remove duplicated Format2 implementation.

OpenRA.FileFormats/FileFormats/Format2.cs

@@ -12,25 +12,22 @@ namespace OpenRA.FileFormats
 {
 	public static class Format2
 	{
-		public static int DecodeInto(byte[] src, byte[] dest)
+		public static void DecodeInto(byte[] src, byte[] dest, int destIndex)
 		{
-			FastByteReader r = new FastByteReader(src);
+			var r = new FastByteReader(src);
 
-			int i = 0;
 			while (!r.Done())
 			{
-				byte cmd = r.ReadByte();
+				var cmd = r.ReadByte();
 				if (cmd == 0)
 				{
-					byte count = r.ReadByte();
+					var count = r.ReadByte();
 					while (count-- > 0)
-						dest[i++] = 0;
+						dest[destIndex++] = 0;
 				}
 				else
-					dest[i++] = cmd;
+					dest[destIndex++] = cmd;
 			}
-
-			return i;
 		}
 	}
 }

OpenRA.FileFormats/Graphics/ShpD2Reader.cs

@@ -73,10 +73,10 @@ namespace OpenRA.FileFormats
 			{
 				var tempData = new byte[dataSize];
 				Format80.DecodeInto(imgData, tempData);
-				Format2.DecodeInto(tempData, Data);
+				Format2.DecodeInto(tempData, Data, 0);
 			}
 			else
-				Format2.DecodeInto(imgData, Data);
+				Format2.DecodeInto(imgData, Data, 0);
 
 			// Lookup values in lookup table
 			for (var j = 0; j < Data.Length; j++)

OpenRA.FileFormats/Graphics/ShpTSReader.cs

@@ -89,21 +89,8 @@ namespace OpenRA.FileFormats
 
 					for (var j = 0; j < f.Size.Height; j++)
 					{
-						var k = j * f.Size.Width;
 						var length = stream.ReadUInt16() - 2;
-						while (length > 0)
-						{
-							var b = stream.ReadUInt8();
-							length--;
-
-							if (b == 0)
-							{
-								k += stream.ReadUInt8();
-								length--;
-							}
-							else
-								f.Data[k++] = b;
-						}
+						Format2.DecodeInto(stream.ReadBytes(length), f.Data, j * f.Size.Width);
 					}
 				}
 			}