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/RayDIM/Read.cs
+++ b/DiscImageChef.DiscImages/RayDIM/Read.cs
@@ -0,0 +1,130 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Read.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Reads Ray Arachelian's 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;
+using System.Runtime.InteropServices;
+using System.Text.RegularExpressions;
+using DiscImageChef.CommonTypes;
+using DiscImageChef.CommonTypes.Enums;
+using DiscImageChef.CommonTypes.Interfaces;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class RayDim
+    {
+        public bool Open(IFilter imageFilter)
+        {
+            Stream stream = imageFilter.GetDataForkStream();
+
+            if(stream.Length < Marshal.SizeOf(typeof(RayHdr))) return false;
+
+            byte[] buffer = new byte[Marshal.SizeOf(typeof(RayHdr))];
+            stream.Seek(0, SeekOrigin.Begin);
+            stream.Read(buffer, 0, buffer.Length);
+
+            IntPtr ftrPtr = Marshal.AllocHGlobal(buffer.Length);
+            Marshal.Copy(buffer, 0, ftrPtr, buffer.Length);
+            RayHdr header = (RayHdr)Marshal.PtrToStructure(ftrPtr, typeof(RayHdr));
+            Marshal.FreeHGlobal(ftrPtr);
+
+            string signature = StringHandlers.CToString(header.signature);
+
+            Regex sx = new Regex(REGEX_SIGNATURE);
+            Match sm = sx.Match(signature);
+
+            if(!sm.Success) return false;
+
+            imageInfo.ApplicationVersion = $"{sm.Groups["major"].Value}.{sm.Groups["minor"].Value}";
+
+            imageInfo.Cylinders       = (uint)(header.cylinders + 1);
+            imageInfo.Heads           = (uint)(header.heads     + 1);
+            imageInfo.SectorsPerTrack = header.sectorsPerTrack;
+            imageInfo.Sectors         = imageInfo.Cylinders * imageInfo.Heads * imageInfo.SectorsPerTrack;
+            imageInfo.SectorSize      = 512;
+
+            byte[] sectors = new byte[imageInfo.SectorsPerTrack * imageInfo.SectorSize];
+            disk = new MemoryStream();
+
+            for(int i = 0; i < imageInfo.SectorsPerTrack * imageInfo.SectorSize; i++)
+            {
+                stream.Read(sectors, 0, sectors.Length);
+                stream.Seek(imageInfo.SectorsPerTrack, SeekOrigin.Current);
+                disk.Write(sectors, 0, sectors.Length);
+            }
+
+            imageInfo.MediaType = Geometry.GetMediaType(((ushort)imageInfo.Cylinders, (byte)imageInfo.Heads,
+                                                         (ushort)imageInfo.SectorsPerTrack, 512, MediaEncoding.MFM,
+                                                         false));
+
+            switch(imageInfo.MediaType)
+            {
+                case MediaType.NEC_525_HD
+                    when header.diskType == RayDiskTypes.Mf2hd || header.diskType == RayDiskTypes.Mf2ed:
+                    imageInfo.MediaType = MediaType.NEC_35_HD_8;
+                    break;
+                case MediaType.DOS_525_HD
+                    when header.diskType == RayDiskTypes.Mf2hd || header.diskType == RayDiskTypes.Mf2ed:
+                    imageInfo.MediaType = MediaType.NEC_35_HD_15;
+                    break;
+                case MediaType.RX50 when header.diskType == RayDiskTypes.Md2dd || header.diskType == RayDiskTypes.Md2hd:
+                    imageInfo.MediaType = MediaType.ATARI_35_SS_DD;
+                    break;
+            }
+
+            imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
+
+            return true;
+        }
+
+        public byte[] ReadSector(ulong sectorAddress)
+        {
+            return ReadSectors(sectorAddress, 1);
+        }
+
+        public byte[] ReadSectors(ulong sectorAddress, uint length)
+        {
+            if(sectorAddress > imageInfo.Sectors - 1)
+                throw new ArgumentOutOfRangeException(nameof(sectorAddress), "Sector address not found");
+
+            if(sectorAddress + length > imageInfo.Sectors)
+                throw new ArgumentOutOfRangeException(nameof(length), "Requested more sectors than available");
+
+            byte[] buffer = new byte[length * imageInfo.SectorSize];
+
+            disk.Seek((long)(sectorAddress    * imageInfo.SectorSize), SeekOrigin.Begin);
+            disk.Read(buffer, 0, (int)(length * imageInfo.SectorSize));
+
+            return buffer;
+        }
+    }
+}