Organized the project files.

And also fixed some bugs.

PriFileFormat/Section.cs

@@ -0,0 +1,89 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Runtime.InteropServices;
+namespace PriFileFormat
+{
+	public abstract class Section
+	{
+		protected PriFile PriFile { get; private set; }
+		public string SectionIdentifier { get; private set; }
+		public uint SectionQualifier { get; private set; }
+		public uint Flags { get; private set; }
+		public uint SectionFlags { get; private set; }
+		public uint SectionLength { get; private set; }
+
+		protected Section (string sectionIdentifier, PriFile priFile)
+		{
+			if (sectionIdentifier.Length != 16)
+				throw new ArgumentException ("Section identifiers need to be exactly 16 characters long.", nameof (sectionIdentifier));
+
+			SectionIdentifier = sectionIdentifier;
+			PriFile = priFile;
+		}
+
+		internal bool Parse (BinaryReader binaryReader)
+		{
+			if (new string (binaryReader.ReadChars (16)) != SectionIdentifier)
+				throw new InvalidDataException ("Unexpected section identifier.");
+
+			SectionQualifier = binaryReader.ReadUInt32 ();
+			Flags = binaryReader.ReadUInt16 ();
+			SectionFlags = binaryReader.ReadUInt16 ();
+			SectionLength = binaryReader.ReadUInt32 ();
+			binaryReader.ExpectUInt32 (0);
+
+			binaryReader.BaseStream.Seek (SectionLength - 16 - 24, SeekOrigin.Current);
+
+			binaryReader.ExpectUInt32 (0xDEF5FADE);
+			binaryReader.ExpectUInt32 (SectionLength);
+
+			binaryReader.BaseStream.Seek (-8 - (SectionLength - 16 - 24), SeekOrigin.Current);
+
+			using (SubStream subStream = new SubStream (binaryReader.BaseStream, binaryReader.BaseStream.Position, (int)SectionLength - 16 - 24))
+			using (BinaryReader subBinaryReader = new BinaryReader (subStream, Encoding.ASCII))
+			{
+				return ParseSectionContent (subBinaryReader);
+			}
+		}
+
+		protected abstract bool ParseSectionContent (BinaryReader binaryReader);
+
+		public override string ToString ()
+		{
+			return $"{SectionIdentifier.TrimEnd ('\0', ' ')} length: {SectionLength}";
+		}
+
+		internal static Section CreateForIdentifier (string sectionIdentifier, PriFile priFile)
+		{
+			switch (sectionIdentifier)
+			{
+				case PriDescriptorSection.Identifier:
+					return new PriDescriptorSection (priFile);
+				case HierarchicalSchemaSection.Identifier1:
+					return new HierarchicalSchemaSection (priFile, false);
+				case HierarchicalSchemaSection.Identifier2:
+					return new HierarchicalSchemaSection (priFile, true);
+				case DecisionInfoSection.Identifier:
+					return new DecisionInfoSection (priFile);
+				case ResourceMapSection.Identifier1:
+					return new ResourceMapSection (priFile, false);
+				case ResourceMapSection.Identifier2:
+					return new ResourceMapSection (priFile, true);
+				case DataItemSection.Identifier:
+					return new DataItemSection (priFile);
+				case ReverseMapSection.Identifier:
+					return new ReverseMapSection (priFile);
+				case ReferencedFileSection.Identifier:
+					return new ReferencedFileSection (priFile);
+				default:
+					return new UnknownSection (sectionIdentifier, priFile);
+			}
+		}
+
+		~Section ()
+		{
+			PriFile = null;
+		}
+	}
+}