REFACTOR: Separate SCSI MODE decoders.

DiscImageChef.Decoders/SCSI/Modes/30_Apple.cs

@@ -0,0 +1,66 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : 30_Apple.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Device structures decoders.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Decodes Apple MODE PAGE 30h: Apple OEM String.
+//
+// --[ 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.Linq;
+
+namespace DiscImageChef.Decoders.SCSI
+{
+    public static partial class Modes
+    {
+    #region Apple Mode Page 0x30: Apple OEM String
+    static readonly byte[] AppleOEMString =
+    {
+        0x41, 0x50, 0x50, 0x4C, 0x45, 0x20, 0x43, 0x4F, 0x4D, 0x50, 0x55, 0x54, 0x45, 0x52, 0x2C, 0x20, 0x49, 0x4E,
+        0x43, 0x2E
+    };
+
+    public static bool IsAppleModePage_30(byte[] pageResponse)
+    {
+        if(pageResponse == null) return false;
+
+        if((pageResponse[0] & 0x40) == 0x40) return false;
+
+        if((pageResponse[0] & 0x3F) != 0x30) return false;
+
+        if(pageResponse[1] + 2 != pageResponse.Length) return false;
+
+        if(pageResponse.Length != 30) return false;
+
+        byte[] str = new byte[20];
+        Array.Copy(pageResponse, 10, str, 0, 20);
+
+        return AppleOEMString.SequenceEqual(str);
+    }
+    #endregion Apple Mode Page 0x30: Apple OEM String
+    }
+}