Refactor image classes and split them to smaller files.

DiscImageChef.DiscImages/DiskCopy42/Constants.cs

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+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Constants.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Contains constants for Apple DiskCopy 4.2 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
+// ****************************************************************************/
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class DiskCopy42
+    {
+        // format byte
+        /// <summary>3.5", single side, double density, GCR</summary>
+        const byte kSonyFormat400K = 0x00;
+        /// <summary>3.5", double side, double density, GCR</summary>
+        const byte kSonyFormat800K = 0x01;
+        /// <summary>3.5", double side, double density, MFM</summary>
+        const byte kSonyFormat720K = 0x02;
+        /// <summary>3.5", double side, high density, MFM</summary>
+        const byte kSonyFormat1440K = 0x03;
+        /// <summary>3.5", double side, high density, MFM, 21 sectors/track (aka, Microsoft DMF)</summary>
+        // Unchecked value</summary>
+        const byte kSonyFormat1680K = 0x04;
+        /// <summary>Defined by Sigma Seven's BLU</summary>
+        const byte kSigmaFormatTwiggy = 0x54;
+        /// <summary>Defined by LisaEm</summary>
+        const byte kNotStandardFormat = 0x5D;
+        // There should be a value for Apple HD20 hard disks, unknown...
+        // fmyByte byte
+        // Based on GCR nibble
+        // Always 0x02 for MFM disks
+        // Unknown for Apple HD20
+        /// <summary>Defined by Sigma Seven's BLU</summary>
+        const byte kSigmaFmtByteTwiggy = 0x01;
+        /// <summary>3.5" single side double density GCR and MFM all use same code</summary>
+        const byte kSonyFmtByte400K = 0x02;
+        const byte kSonyFmtByte720K  = kSonyFmtByte400K;
+        const byte kSonyFmtByte1440K = kSonyFmtByte400K;
+        const byte kSonyFmtByte1680K = kSonyFmtByte400K;
+        /// <summary>3.5" double side double density GCR, 512 bytes/sector, interleave 2:1</summary>
+        const byte kSonyFmtByte800K = 0x22;
+        /// <summary>
+        ///     3.5" double side double density GCR, 512 bytes/sector, interleave 2:1, incorrect value (but appears on
+        ///     official documentation)
+        /// </summary>
+        const byte kSonyFmtByte800KIncorrect = 0x12;
+        /// <summary>3.5" double side double density GCR, ProDOS format, interleave 4:1</summary>
+        const byte kSonyFmtByteProDos = 0x24;
+        /// <summary>Unformatted sectors</summary>
+        const byte kInvalidFmtByte = 0x96;
+        /// <summary>Defined by LisaEm</summary>
+        const byte kFmtNotStandard = 0x93;
+        /// <summary>Used incorrectly by Mac OS X with certaing disk images</summary>
+        const byte kMacOSXFmtByte = 0x00;
+        const string REGEX_DCPY = @"(?<application>\S+)\s(?<version>\S+)\rData checksum=\$(?<checksum>\S+)$";
+    }
+}