Organized the project files.

And also fixed some bugs.

PriFileFormat/PriFile.cs

@@ -0,0 +1,187 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System;
+
+namespace PriFileFormat
+{
+	public class PriFile: IDisposable
+	{
+		public string Version { get; private set; }
+		public uint TotalFileSize { get; private set; }
+		public IReadOnlyList <TocEntry> TableOfContents { get; private set; }
+		public IReadOnlyList <Section> Sections { get; private set; }
+		private bool _disposed = false;
+		private Stream _internalStream; // 跟踪内部流
+		private PriFile ()
+		{
+		}
+
+		public static PriFile Parse (Stream stream)
+		{
+			PriFile priFile = new PriFile ();
+			priFile.ParseInternal (stream, false);
+			return priFile;
+		}
+
+		public static PriFile Parse (System.Runtime.InteropServices.ComTypes.IStream stream)
+		{
+
+			ComStreamWrapper csw = new ComStreamWrapper (stream);
+			PriFile priFile = new PriFile ();
+			priFile.ParseInternal (csw, true);
+			return priFile;
+		}
+
+		private void ParseInternal (Stream stream, bool ownStream)
+		{
+			if (ownStream) { _internalStream = stream; }
+			using (BinaryReader binaryReader = new BinaryReader (stream, Encoding.ASCII, true))
+			{
+				long fileStartOffset = binaryReader.BaseStream.Position;
+
+				string magic = new string (binaryReader.ReadChars (8));
+
+				switch (magic)
+				{
+					case "mrm_pri0":
+					case "mrm_pri1":
+					case "mrm_pri2":
+					case "mrm_prif":
+						Version = magic;
+						break;
+					default:
+						throw new InvalidDataException ("Data does not start with a PRI file header.");
+				}
+
+				binaryReader.ExpectUInt16 (0);
+				binaryReader.ExpectUInt16 (1);
+				TotalFileSize = binaryReader.ReadUInt32 ();
+				uint tocOffset = binaryReader.ReadUInt32 ();
+				uint sectionStartOffset = binaryReader.ReadUInt32 ();
+				ushort numSections = binaryReader.ReadUInt16 ();
+
+				binaryReader.ExpectUInt16 (0xFFFF);
+				binaryReader.ExpectUInt32 (0);
+
+				binaryReader.BaseStream.Seek (fileStartOffset + TotalFileSize - 16, SeekOrigin.Begin);
+
+				binaryReader.ExpectUInt32 (0xDEFFFADE);
+				binaryReader.ExpectUInt32 (TotalFileSize);
+				binaryReader.ExpectString (magic);
+
+				binaryReader.BaseStream.Seek (tocOffset, SeekOrigin.Begin);
+
+				List<TocEntry> toc = new List<TocEntry> (numSections);
+
+				for (int i = 0; i < numSections; i++)
+					toc.Add (TocEntry.Parse (binaryReader));
+
+				TableOfContents = toc;
+
+				Section [] sections = new Section [numSections];
+
+				Sections = sections;
+
+				bool parseSuccess = false;
+				bool parseFailure = false;
+
+				do
+				{
+					for (int i = 0; i < sections.Length; i++)
+						if (sections [i] == null)
+						{
+							binaryReader.BaseStream.Seek (sectionStartOffset + toc [i].SectionOffset, SeekOrigin.Begin);
+
+							Section section = Section.CreateForIdentifier (toc [i].SectionIdentifier, this);
+
+							if (section.Parse (binaryReader))
+							{
+								sections [i] = section;
+								parseSuccess = true;
+							}
+							else
+								parseFailure = true;
+						}
+				} while (parseFailure && parseSuccess);
+
+				if (parseFailure)
+					throw new InvalidDataException ();
+			}
+		}
+
+		public void Dispose ()
+		{
+			Dispose (true);
+			GC.SuppressFinalize (this);
+		}
+		protected virtual void Dispose (bool disposing)
+		{
+			if (_disposed) return;
+			if (disposing)
+			{
+				// 释放托管资源
+				if (_internalStream != null)
+				{
+					_internalStream.Dispose ();
+					_internalStream = null;
+				}
+
+				// 释放 section 内容
+				if (Sections != null)
+				{
+					foreach (var section in Sections)
+					{
+						var unknown = section as UnknownSection;
+						if (unknown != null)
+							unknown.ClearContent ();
+
+						var dataSection = section as DataItemSection;
+						if (dataSection != null)
+							dataSection.ClearData ();
+					}
+					Sections = null;
+				}
+			}
+
+			_disposed = true;
+		}
+
+		~PriFile ()
+		{
+			Dispose (false);
+		}
+
+		PriDescriptorSection priDescriptorSection;
+
+		public PriDescriptorSection PriDescriptorSection
+		{
+			get
+			{
+				if (priDescriptorSection == null) priDescriptorSection = Sections.OfType<PriDescriptorSection> ().Single ();
+				return priDescriptorSection;
+			}
+		}
+
+		public T GetSectionByRef<T> (SectionRef<T> sectionRef) where T : Section
+		{
+			return (T)Sections [sectionRef.sectionIndex];
+		}
+
+		public ResourceMapItem GetResourceMapItemByRef (ResourceMapItemRef resourceMapItemRef)
+		{
+			return GetSectionByRef (resourceMapItemRef.schemaSection).Items [resourceMapItemRef.itemIndex];
+		}
+
+		public ByteSpan GetDataItemByRef (DataItemRef dataItemRef)
+		{
+			return GetSectionByRef (dataItemRef.dataItemSection).DataItems [dataItemRef.itemIndex];
+		}
+
+		public ReferencedFile GetReferencedFileByRef (ReferencedFileRef referencedFileRef)
+		{
+			return GetSectionByRef (PriDescriptorSection.ReferencedFileSections.First ()).ReferencedFiles [referencedFileRef.fileIndex];
+		}
+	}
+}