private IntermediateResourceDescriptor ReadIntermediateDescriptor(long baseOffset, BinaryReader memoryReader)
{
var intermediate = new IntermediateResourceDescriptor();
intermediate.FileOffset = baseOffset + memoryReader.BaseStream.Position;
intermediate.NameOffset = memoryReader.ReadInt32BE();
intermediate.Size = memoryReader.ReadInt32BE();
return(intermediate);
}
private ResourceDescriptor ConvertIntermediateResourceToFinalResource(IntermediateResourceDescriptor intermediateResourceDescriptor, CompositeResourceDescriptor compositeDescriptor)
{
if (intermediateResourceDescriptor == null)
{
return(null);
}
intermediateResourceDescriptor.FinalResourceDescriptor = compositeDescriptor;
return(new ResourceDescriptor()
{
Offset = intermediateResourceDescriptor.FileOffset,
Size = intermediateResourceDescriptor.Size
});
}
private string BuildResourceName(string subDirectory, IntermediateResourceDescriptor descriptor)
{
return(subDirectory + @"\" + descriptor.FinalResourceDescriptor.Name);
}
private static void ExtractFileFromIntermediateResourceDescriptor(string outputDirectory, MemoryStream completeDecompressedMemoryStream, IntermediateResourceDescriptor descriptor, string resourceName)
{
var outputName = outputDirectory + @"\" + resourceName;
Directory.CreateDirectory(outputName.Substring(0, outputName.LastIndexOf('\\')));
using (BinaryWriter writer = new BinaryWriter(File.Open(outputName, FileMode.Create)))
{
using (BinaryReader reader = new BinaryReader(completeDecompressedMemoryStream, ASCIIEncoding.ASCII, true))
{
writer.Write(reader.ReadBytes(descriptor.Size));
}
}
}
private static void WriteToLengthsDescriptor(Queue <int> fileLengthsMapping, StreamWriter descriptorWriter, ref int currentTargetLength, ref int subtotalLength, IntermediateResourceDescriptor resourceDescriptor, string resourceName)
{
descriptorWriter.Write(resourceName);
subtotalLength += resourceDescriptor.Size;
if (subtotalLength == currentTargetLength)
{
descriptorWriter.Write("\n");
subtotalLength = 0;
currentTargetLength = fileLengthsMapping.Count > 0 ? fileLengthsMapping.Dequeue() : 0;
}
else
{
descriptorWriter.Write(",");
}
}
