private static void ReadFileHeaders(StreamReader sr, SaveGameFile savegame)
{
using (var br = new BinaryReader(sr.BaseStream))
{
if (br.ReadInt32() == 4)
{
savegame.IsCompressed = true;
}
sr.BaseStream.Seek(4, SeekOrigin.Current);
var blockCount = br.ReadInt32();
for (int j = 0; j < blockCount; j++)
{
byte[] fileHeader = new byte[ByteBlockSize];
br.Read(fileHeader, 0, ByteBlockSize);
var internalName = ByteHandler.GetStringFromBytes(fileHeader, 8);
savegame.DataBlockNameList.Add(new DataFile()
{
InternalName = internalName,
FileType = DataFileFacts.GetDataFileFact(internalName).Type,
Position = ByteHandler.GetIntFromBytes(fileHeader, 0),
Length = ByteHandler.GetIntFromBytes(fileHeader, 4)
});
}
}
}
private static int GetNumberOfRecordsFromDataFile(DataFile dataFile, int sizeOfData, BinaryReader br, out int startReadPosition)
{
int numberOfRecords = dataFile.Length / sizeOfData;
startReadPosition = dataFile.Position;
if (dataFile.FileFacts.HeaderOverload != null)
{
byte[] header = new byte[dataFile.FileFacts.HeaderOverload.MinimumHeaderLength];
br.BaseStream.Seek(startReadPosition, SeekOrigin.Begin);
br.BaseStream.Read(header, 0, dataFile.FileFacts.HeaderOverload.MinimumHeaderLength);
startReadPosition += dataFile.FileFacts.HeaderOverload.MinimumHeaderLength;
var numberHeaderRows = ByteHandler.GetIntFromBytes(header, dataFile.FileFacts.HeaderOverload.AdditionalHeaderIndicatorPosition);
numberOfRecords = ByteHandler.GetIntFromBytes(header, dataFile.FileFacts.HeaderOverload.InitialNumberOfRecordsPosition);
int furtherNumberOfRecords = 0;
if (numberHeaderRows > 0)
{
for (int headerLoop = 0; headerLoop < numberHeaderRows; headerLoop++)
{
header = new byte[dataFile.FileFacts.HeaderOverload.ExtraHeaderLength];
br.BaseStream.Seek(startReadPosition, SeekOrigin.Begin);
br.BaseStream.Read(header, 0, dataFile.FileFacts.HeaderOverload.ExtraHeaderLength);
startReadPosition += dataFile.FileFacts.HeaderOverload.ExtraHeaderLength;
}
furtherNumberOfRecords = ByteHandler.GetIntFromBytes(header, dataFile.FileFacts.HeaderOverload.FurtherNumberOfRecordsPosition);
}
numberOfRecords = furtherNumberOfRecords > 0 ? furtherNumberOfRecords : numberOfRecords;
}
return(numberOfRecords);
}
