private void _ParseDataType(byte[] buffer)
{
int offset = 0;
// header
FileHeader fileHeader = FileTools.ByteArrayToStructure <FileHeader>(buffer, ref offset);
if (fileHeader.FileToken != Token.Head)
{
throw new Exceptions.UnexpectedTokenException("Expected Head token but got 0x" + fileHeader.FileToken.ToString("X8"));
}
if (fileHeader.FileVersion != RequiredVersion)
{
throw new Exceptions.NotSupportedFileVersionException(RequiredVersion, fileHeader.FileVersion);
}
// Read the strings section
StringsHeader stringsHeader = FileTools.ByteArrayToStructure <StringsHeader>(buffer, ref offset);
if (stringsHeader.StringsToken != Token.Sect)
{
throw new Exceptions.UnexpectedTokenException(Token.Sect, stringsHeader.StringsToken);
}
List <String> strings = new List <String>();
for (int i = 0; i < stringsHeader.StringsCount; i++)
{
strings.Add(FileTools.ByteArrayToStringASCII(buffer, offset));
offset += strings[i].Length + 1; // +1 for \0
}
// String Details
UInt32 stringsDetailsToken = FileTools.ByteArrayToUInt32(buffer, ref offset);
if (stringsDetailsToken != Token.Sect)
{
throw new Exceptions.UnexpectedTokenException(Token.Sect, stringsDetailsToken);
}
// Skip over the details struct because we don't need it.
offset += stringsHeader.StringsCount * Marshal.SizeOf(typeof(StringDetailsStruct));
// Files Structure details
UInt32 filesToken = FileTools.ByteArrayToUInt32(buffer, ref offset);
if (filesToken != Token.Sect)
{
throw new Exceptions.UnexpectedTokenException(Token.Sect, stringsDetailsToken);
}
FileDetails.AddRange(FileTools.ByteArrayToArray <FileEntryStruct>(buffer, ref offset, fileHeader.FileCount));
// The Files list is the public interface
for (int i = 0; i < fileHeader.FileCount; i++)
{
PackFileEntry fileEntry = new FileEntry(FileDetails[i])
{
Pack = this,
Path = System.IO.Path.Combine(strings[FileDetails[i].DirectoryIndex], strings[FileDetails[i].NameIndex]),
};
Files.Add(fileEntry);
}
HasIntegrity = true;
}