Refactor image classes and split them to smaller files.

DiscImageChef.DiscImages/Apridisk/Compression.cs

@@ -0,0 +1,64 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Compression.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Contains compression algorithm for Apridisk disk images.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This library is free software; you can redistribute it and/or modify
+//     it under the terms of the GNU Lesser General Public License as
+//     published by the Free Software Foundation; either version 2.1 of the
+//     License, or (at your option) any later version.
+//
+//     This library 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
+//     Lesser General Public License for more details.
+//
+//     You should have received a copy of the GNU Lesser General Public
+//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2018 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+using System.IO;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class Apridisk
+    {
+        static uint Decompress(byte[] compressed, out byte[] decompressed)
+        {
+            int          readp  = 0;
+            int          cLen   = compressed.Length;
+            MemoryStream buffer = new MemoryStream();
+
+            uint uLen = 0;
+
+            while(cLen >= 3)
+            {
+                ushort blklen = BitConverter.ToUInt16(compressed, readp);
+                readp += 2;
+
+                for(int i = 0; i < blklen; i++) buffer.WriteByte(compressed[readp]);
+
+                uLen += blklen;
+                readp++;
+                cLen -= 3;
+            }
+
+            decompressed = buffer.ToArray();
+            return uLen;
+        }
+    }
+}