Block Type 0

If the last byte in the fileBlock's file name is '/' or '\', then it's a folder. Simply create the folder.

Otherwise, we need to create a file.

struct NewFile
{
    int length;
    unsigned int checksum;
    unsigned char* bytes;
};

Get the length and the checksum, calculate the checksum of the file which is contained in NewFile.bytes and write the file to disk. It's fairly straightforward.