[Mappings, Skippers] Separate out old Remapping class

All things that have to do with DAT mappings are in Mappings now and eveything having to do with header skippers are in Skippers now. Also, Skippers got proper implementations of matching a file to a rule and applying a rule to a file.

SabreTools.Helper/Mappings.cs

@@ -0,0 +1,111 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Xml;
+
+namespace SabreTools.Helper
+{
+	/// <summary>
+	/// Contains all remappings of known import classes
+	/// </summary>
+	public class Mappings
+	{
+		// Local paths
+		private const string _remappersPath = "Mappings";
+
+		// Remapping classes represented by a dictionary of dictionaries (name, (from, to))
+		private static Dictionary<string, Dictionary<string, string>> _datMaps = new Dictionary<string, Dictionary<string, string>>();
+		public static Dictionary<string, Dictionary<string, string>> DatMaps
+		{
+			get
+			{
+				if (_datMaps.Count == 0)
+				{
+					CreateRemappings();
+				}
+				return _datMaps;
+			}
+		}
+
+		#region DAT Name Remappings
+
+		/// <summary>
+		/// Create all remappings to be used by the program
+		/// </summary>
+		private static void CreateRemappings()
+		{
+			// Create array of dictionary names
+			string[] remappings =
+			{
+				"Good", "MAME", "MaybeIntro", "NoIntro", "NonGood", "Redump", "TOSEC", "TruRip",
+			};
+
+			// Loop through and add all remappings
+			foreach (string remapping in remappings)
+			{
+				_datMaps.Add(remapping, new Dictionary<string, string>());
+				RemappingHelper(remapping);
+			}
+		}
+
+		/// <summary>
+		/// Create a remapping from XML
+		/// </summary>
+		/// <param name="mapping">Name of the mapping to be populated</param>
+		private static void RemappingHelper(string mapping)
+		{
+			// Read in remapping from file
+			XmlDocument doc = new XmlDocument();
+			try
+			{
+				doc.LoadXml(File.ReadAllText(Path.Combine(_remappersPath, mapping + ".xml")));
+			}
+			catch (XmlException ex)
+			{
+				Console.WriteLine(mapping + " remappings could not be loaded! " + ex.ToString());
+				return;
+			}
+
+			// Get the mappings parent node
+			XmlNode node = doc.FirstChild;
+			while (node.Name != "mappings")
+			{
+				node = node.NextSibling;
+			}
+
+			// If the node is empty, just return so it doesn't crash
+			if (!node.HasChildNodes)
+			{
+				return;
+			}
+
+			// Get the first mapping node
+			node = node.FirstChild;
+			while (node.NodeType != XmlNodeType.Element && node.Name != "mapping")
+			{
+				node = node.NextSibling;
+			}
+
+			// Now read in the mappings
+			while (node != null && node.Name == "mapping")
+			{
+				_datMaps[mapping].Add(node.Attributes["from"].Value, node.Attributes["to"].Value);
+
+				// Get the next node and skip over anything that's not an element
+				node = node.NextSibling;
+
+				if (node == null)
+				{
+					break;
+				}
+
+				while (node.NodeType != XmlNodeType.Element && node.Name != "mapping")
+				{
+					node = node.NextSibling;
+				}
+			}
+		}
+
+		#endregion
+	}
+}