Reorganise FileFormats

2010-04-01 14:25:08 +13:00
parent 5a95c8a071
commit 8a64209d89
27 changed files with 124 additions and 28 deletions
--- a/OpenRA.FileFormats/FileFormats/Format40.cs
+++ b/OpenRA.FileFormats/FileFormats/Format40.cs
@@ -0,0 +1,88 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+namespace OpenRA.FileFormats
+{
+	public static class Format40
+	{
+		public static int DecodeInto( byte[] src, byte[] dest )
+		{
+            var ctx = new FastByteReader(src);
+			int destIndex = 0;
+
+			while( true )
+			{
+                byte i = ctx.ReadByte();
+				if( ( i & 0x80 ) == 0 )
+				{
+					int count = i & 0x7F;
+					if( count == 0 )
+					{
+						// case 6
+                        count = ctx.ReadByte();
+                        byte value = ctx.ReadByte();
+						for( int end = destIndex + count ; destIndex < end ; destIndex++ )
+							dest[ destIndex ] ^= value;
+					}
+					else
+					{
+						// case 5
+						for( int end = destIndex + count ; destIndex < end ; destIndex++ )
+                            dest[destIndex] ^= ctx.ReadByte();
+					}
+				}
+				else
+				{
+					int count = i & 0x7F;
+					if( count == 0 )
+					{
+                        count = ctx.ReadWord();
+						if( count == 0 )
+							return destIndex;
+
+						if( ( count & 0x8000 ) == 0 )
+						{
+							// case 2
+							destIndex += ( count & 0x7FFF );
+						}
+						else if( ( count & 0x4000 ) == 0 )
+						{
+							// case 3
+							for( int end = destIndex + ( count & 0x3FFF ) ; destIndex < end ; destIndex++ )
+                                dest[destIndex] ^= ctx.ReadByte();
+						}
+						else
+						{
+							// case 4
+                            byte value = ctx.ReadByte();
+							for( int end = destIndex + ( count & 0x3FFF ) ; destIndex < end ; destIndex++ )
+								dest[ destIndex ] ^= value;
+						}
+					}
+					else
+					{
+						// case 1
+						destIndex += count;
+					}
+				}
+			}
+		}
+	}
+}