public FileStructureExtraData(Stream stream, CustomBinaryReader reader, int extra_length)
{
var end = stream.Position + extra_length;
_UnknownID = reader.ReadInt16();
StructureSizeAfterHeader = reader.ReadInt16();
UncompressedFileLength = reader.ReadInt32();
_UnknownD = reader.ReadInt32();
CompressedFileLength = reader.ReadInt32();
_UnknownF = reader.ReadInt32();
var data_offset_ldword = (Int64)reader.ReadUInt32();
var data_offset_hdword = (Int64)reader.ReadUInt32();
DataOffset = data_offset_ldword + (data_offset_hdword << 32);
_UnknownG = reader.ReadInt32();
_Timestamp_Maybe_But_Not_Sure = reader.ReadInt32();
// here be demons and lots of padding
// make sure we read this to ensure the stream position is correct
var padding_length = end - stream.Position;
var data = reader.ReadBytes((int)padding_length);
if (stream.Position % 0x1000 != 0)
{
throw new Exception("File Data Section Alignment Error (End Extra Read)");
}
FileDataOffset = stream.Position;
}
public CentralDirectoryEnd(Stream stream, CustomBinaryReader reader)
{
DiskNumber = reader.ReadInt16();
DiskNumberWithCD = reader.ReadInt16();
DiskEntries = reader.ReadInt16();
TotalEntries = reader.ReadInt16();
CentralDirectorySize = reader.ReadInt32();
OffsetOfCdStartingDisk = reader.ReadInt32();
CommentLength = reader.ReadInt16();
Comment = reader.ReadString(CommentLength);
}
public CentralDirectoryLocator(Stream stream, CustomBinaryReader reader)
{
unknownA = reader.ReadInt32();
unknownB = reader.ReadInt32();
unknownC = reader.ReadInt16();
unknownD = reader.ReadInt16();
unknownE = reader.ReadInt32();
unknownF = reader.ReadInt32();
DontentDictionaryCount = reader.ReadInt32();
unknownG = reader.ReadInt32();
ContentDictionaryCount2 = reader.ReadInt32();
unknownH = reader.ReadInt32();
ContentDictionarySize = reader.ReadInt32();
unknownI = reader.ReadInt32();
ContentDirectoryOffset = reader.ReadInt64();
}
public FileStructure(Stream stream, CustomBinaryReader reader)
{
if ((stream.Position - 4) % 0x1000 != 0)
{
throw new Exception("File Data Section Alignment Error (Pre Read)");
}
Version = reader.ReadInt16();
Flags = reader.ReadInt16();
CompressionMode = (FileCompressionMode)reader.ReadInt16();
ModificationTime = reader.ReadUInt16();
ModificationDate = reader.ReadUInt16();
CRC32 = reader.ReadInt32();
CompressedSize = reader.ReadInt32();
UncompressedSize = reader.ReadInt32();
FilenameLength = reader.ReadInt16();
ExtraLength = reader.ReadInt16();
Filename = reader.ReadString(FilenameLength);
Extra = new FileStructureExtraData(stream, reader, ExtraLength);
}
public object ReadPK(Stream stream, CustomBinaryReader reader, Int64 offset)
{
stream.Seek(offset, SeekOrigin.Begin);
var magic = reader.ReadInt16();
if (magic != 0x4B50)
{
throw new Exception("Invalid PK offset");
}
Signature signature = (Signature)reader.ReadInt16();
switch (signature)
{
case Signature.CentralDirectory:
CentralDirectory centralDirectory = new CentralDirectory(stream, reader);
if (Logging)
{
Console.WriteLine($"Found CentralDirectory {centralDirectory.Filename}");
}
if (Logging)
{
Console.WriteLine($"Searching for FileStructure @{centralDirectory.Extra.data_offset.ToString("X")}");
}
return(centralDirectory);
case Signature.FileStructure:
FileStructure fileStructure = new FileStructure(stream, reader);
if (Logging)
{
Console.WriteLine($"Found FileStructure {fileStructure.Filename}");
}
return(fileStructure);
case Signature.CentralDirectoryLocator:
CentralDirectoryLocator centralDirectoryLocator = new CentralDirectoryLocator(stream, reader);
if (Logging)
{
Console.WriteLine($"Found CentralDirectoryLocator @{offset}");
}
return(centralDirectoryLocator);
case Signature.CentralDirectoryLocatorOffset:
CentralDirectoryLocatorOffset centralDirectoryLocatorOffset = new CentralDirectoryLocatorOffset(stream, reader);
if (Logging)
{
Console.WriteLine($"Found CentralDirectoryLocatorOffset @{offset}");
}
return(centralDirectoryLocatorOffset);
case Signature.CentralDirectoryEnd:
CentralDirectoryEnd centralDirectoryEnd = new CentralDirectoryEnd(stream, reader);
if (Logging)
{
Console.WriteLine($"Found CentralDirectoryEnd @{offset}");
}
return(centralDirectoryEnd);
default:
throw new NotImplementedException();
}
}