Binary Parsing For FFXIV Log Files

gistfile1.py

    logfile = open(logfilename, 'rb')
    # read in the length of this files records
    headerparts = struct.unpack("2l", logfile.read(8))
    headerlen = headerparts[1] - headerparts[0]
    header = struct.unpack(str(headerlen)+"l", logfile.read(headerlen*4))
    # header * 4 bytes for each and another 8 bytes for the header size
    offset = headerlen*4+8
    for headerpos in range(len(header)):
        if headerpos == 0:
            startbyte = offset
            endbyte = header[headerpos]
        else:
            startbyte = offset + header[headerpos-1]
            endbyte = header[headerpos] - header[headerpos-1]
        logfile.seek(startbyte)
        logitem = logfile.read(endbyte)[2:]