Utils.py 文件源码

def hexdump(src, length=16, sep='.'):
    """
    Displays a hex output of the content it is passed.

    This was based on https://gist.github.com/7h3rAm/5603718 with some
    minor modifications
    """
    allowed = digits + ascii_letters + punctuation + ' '

    print_map = ''.join(((x if x in allowed else '.')
                        for x in map(chr, range(256))))
    lines = []

    for c in xrange(0, len(src), length):
        chars = src[c:c + length]
        hex = ' '.join(["%02x" % ord(x) for x in chars])
        if len(hex) > 24:
            hex = "%s %s" % (hex[:24], hex[24:])
        printable = ''.join(["%s" % (
            (ord(x) <= 127 and print_map[ord(x)]) or sep) for x in chars])
        lines.append("%08x:  %-*s  |%s|" % (c, length * 3, hex, printable))
    return '\n'.join(lines)