balls

def hexDump(source, size=8):

    for chunkNum, chunk in enumerate(chunks.chunks(source, size, None, -1)):

        address = "0x" + intToHex(chunkNum*size, 8)
        hexChars = []
        strChars = []

        for byte in chunk:

            if byte == -1: # padding

                hexChars.append("  ")
                strChars.append(" ")
            else:
                hexChars.append(intToHex(byte, 2))

                strChar = chr(byte)

                if strChar in "\r\n\x0C":
                    strChars.append("N")
                elif strChar in "\t\v":
                    strChars.append("T")
                elif strChar in printable:
                    strChars.append(strChar)
                else:
                    strChars.append(".")

        yield (address, hexChars, strChars)