def checkForStreamId()

in python/awsgs.py [0:0]

• 6 lines of code
• 5 McCabe index (conditional complexity)

def checkForStreamId(data):

    streamIdIncluded = False

    #   We only want the first 4 bits, set other bits to zero, shift 4 places to the right, then trim to 4 in length
    binString = convertMaskAndTrimBytesToBitString(data, 0b11110000, 4, 4)
    if binString!=None:
        streamIdIncluded = binString == '0011' or binString == '0001' or binString == '0100' or binString == '0101'
    return [streamIdIncluded, binString]