Refactor image classes and split them to smaller files.

2025-12-16 19:24:25 +00:00 · 2018-07-23 23:25:43 +01:00
parent 55ca2d23b6
commit ed88989642
445 changed files with 50086 additions and 34342 deletions
--- a/DiscImageChef.DiscImages/D88/Identify.cs
+++ b/DiscImageChef.DiscImages/D88/Identify.cs
@@ -0,0 +1,91 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Identify.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Identifies Quasi88 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.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using DiscImageChef.CommonTypes.Interfaces;
+using DiscImageChef.Console;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class D88
+    {
+        public bool Identify(IFilter imageFilter)
+        {
+            Stream stream = imageFilter.GetDataForkStream();
+            stream.Seek(0, SeekOrigin.Begin);
+            // Even if disk name is supposedly ASCII, I'm pretty sure most emulators allow Shift-JIS to be used :p
+            Encoding shiftjis = Encoding.GetEncoding("shift_jis");
+
+            D88Header d88Hdr = new D88Header();
+
+            if(stream.Length < Marshal.SizeOf(d88Hdr)) return false;
+
+            byte[] hdrB = new byte[Marshal.SizeOf(d88Hdr)];
+            stream.Read(hdrB, 0, hdrB.Length);
+
+            GCHandle handle = GCHandle.Alloc(hdrB, GCHandleType.Pinned);
+            d88Hdr = (D88Header)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(D88Header));
+            handle.Free();
+
+            DicConsole.DebugWriteLine("D88 plugin", "d88hdr.name = \"{0}\"",
+                                      StringHandlers.CToString(d88Hdr.name, shiftjis));
+            DicConsole.DebugWriteLine("D88 plugin", "d88hdr.reserved is empty? = {0}",
+                                      d88Hdr.reserved.SequenceEqual(reservedEmpty));
+            DicConsole.DebugWriteLine("D88 plugin", "d88hdr.write_protect = 0x{0:X2}", d88Hdr.write_protect);
+            DicConsole.DebugWriteLine("D88 plugin", "d88hdr.disk_type = {0} ({1})", d88Hdr.disk_type,
+                                      (byte)d88Hdr.disk_type);
+            DicConsole.DebugWriteLine("D88 plugin", "d88hdr.disk_size = {0}", d88Hdr.disk_size);
+
+            if(d88Hdr.disk_size != stream.Length) return false;
+
+            if(d88Hdr.disk_type != DiskType.D2 && d88Hdr.disk_type != DiskType.Dd2 &&
+               d88Hdr.disk_type != DiskType.Hd2) return false;
+
+            if(!d88Hdr.reserved.SequenceEqual(reservedEmpty)) return false;
+
+            int counter = 0;
+            foreach(int t in d88Hdr.track_table)
+            {
+                if(t > 0) counter++;
+
+                if(t < 0 || t > stream.Length) return false;
+            }
+
+            DicConsole.DebugWriteLine("D88 plugin", "{0} tracks", counter);
+
+            return counter > 0;
+        }
+    }
+}