private Header ReadHeader()
{
var header = new Header();
header.version = InputReader.ReadUInt32();
header.fileSize = InputReader.ReadUInt32();
header.crc = InputReader.ReadUInt32();
header.sectionsOffset = InputReader.ReadUInt32();
header.numSections = InputReader.ReadUInt32();
header.rootType = ReadSectionReferenceUnchecked();
header.rootNode = ReadSectionReferenceUnchecked();
header.tag = InputReader.ReadUInt32();
header.extraTags = new UInt32[Header.ExtraTagCount];
for (int i = 0; i < Header.ExtraTagCount; i++)
{
header.extraTags[i] = InputReader.ReadUInt32();
}
if (header.version >= 7)
{
header.stringTableCrc = InputReader.ReadUInt32();
header.reserved1 = InputReader.ReadUInt32();
header.reserved2 = InputReader.ReadUInt32();
header.reserved3 = InputReader.ReadUInt32();
}
if (header.version < 6 || header.version > 7)
{
throw new ParsingException(String.Format("Unsupported GR2 version; file is version {0}, supported versions are 6 and 7", header.version));
}
// if (header.tag != Header.Tag)
// throw new ParsingException(String.Format("Incorrect header tag; expected {0:X8}, got {1:X8}", Header.Tag, header.tag));
Debug.Assert(header.fileSize <= InputStream.Length);
Debug.Assert(header.CalculateCRC(InputStream) == header.crc);
Debug.Assert(header.sectionsOffset == header.Size());
Debug.Assert(header.rootType.Section < header.numSections);
// TODO: check rootTypeOffset after serialization
Debug.Assert(header.stringTableCrc == 0);
Debug.Assert(header.reserved1 == 0);
Debug.Assert(header.reserved2 == 0);
Debug.Assert(header.reserved3 == 0);
#if DEBUG_GR2_SERIALIZATION
System.Console.WriteLine(" ===== GR2 Header ===== ");
System.Console.WriteLine(String.Format("Version {0}, Size {1}, CRC {2:X8}", header.version, header.fileSize, header.crc));
System.Console.WriteLine(String.Format("Offset of sections: {0}, num sections: {1}", header.sectionsOffset, header.numSections));
System.Console.WriteLine(String.Format("Root type section {0}, Root type offset {1:X8}", header.rootType.Section, header.rootType.Offset));
System.Console.WriteLine(String.Format("Root node section {0} {1:X8}", header.rootNode.Section, header.rootNode.Offset));
System.Console.WriteLine(String.Format("Tag: {0:X8}, Strings CRC: {1:X8}", header.tag, header.stringTableCrc));
System.Console.WriteLine(String.Format("Extra tags: {0:X8} {1:X8} {2:X8} {3:X8}", header.extraTags[0], header.extraTags[1], header.extraTags[2], header.extraTags[3]));
System.Console.WriteLine(String.Format("Reserved: {0:X8} {1:X8} {2:X8}", new object[] { header.reserved1, header.reserved2, header.reserved3 }));
#endif
return(header);
}
public byte[] Write(object root)
{
using (this.Writer = new BinaryWriter(Stream))
{
this.Magic = InitMagic();
WriteMagic(Magic);
this.Header = InitHeader();
WriteHeader(Header);
for (int i = 0; i < Header.numSections; i++)
{
var section = new WritableSection((SectionType)i, this);
WriteSectionHeader(section.Header);
Sections.Add(section);
}
Magic.headersSize = (UInt32)Stream.Position;
CurrentSection = Sections[(int)SectionType.Main];
CurrentSection.WriteStruct(root);
while (ArrayWrites.Count > 0 || StructWrites.Count > 0 || StringWrites.Count > 0)
{
FlushPendingWrites();
}
foreach (var defn in Types.Values)
{
Sections[(int)SectionType.Discardable].WriteStructDefinition(defn);
}
// We need to do this again to flush strings written by WriteMemberDefinition()
FlushPendingWrites();
FinalizeOffsets();
foreach (var section in Sections)
{
section.Header.first16bit = (UInt32)section.MainStream.Length;
section.Header.first8bit = (UInt32)section.MainStream.Length;
section.Finish();
}
var relocSection = Sections[(int)SectionType.Discardable];
foreach (var section in Sections)
{
relocSection.WriteSectionRelocations(section);
}
foreach (var section in Sections)
{
relocSection.WriteSectionMixedMarshallingRelocations(section);
}
foreach (var section in Sections)
{
// Pad section size to a multiple of the section alignment
while ((section.MainStream.Position % section.Header.alignment) > 0)
{
section.Writer.Write((Byte)0);
}
section.MainStream.Flush();
section.Header.offsetInFile = (UInt32)Stream.Position;
section.Header.uncompressedSize = (UInt32)section.MainStream.Length;
section.Header.compressedSize = (UInt32)section.MainStream.Length;
Writer.Write(section.MainStream.ToArray());
}
foreach (var section in Sections)
{
section.Header.relocationsOffset += relocSection.Header.offsetInFile;
section.Header.mixedMarshallingDataOffset += relocSection.Header.offsetInFile;
}
var rootStruct = LookupStructDefinition(root.GetType(), root);
Header.rootType = ObjectOffsets[rootStruct];
Header.rootNode = new SectionReference(SectionType.Main, 0);
Header.fileSize = (UInt32)Stream.Length;
Stream.Seek(Magic.MagicSize + Header.Size(), SeekOrigin.Begin);
foreach (var section in Sections)
{
WriteSectionHeader(section.Header);
}
Header.crc = Header.CalculateCRC(Stream);
Stream.Seek(0, SeekOrigin.Begin);
WriteMagic(Magic);
WriteHeader(Header);
return(Stream.ToArray());
}
}