VAD Tools Code

#!/usr/bin/env python

class Group:
  def __init__(self, l, size):
    self.size=size
    self.l = l

  def __getitem__(self, group):
    idx = group * self.size
    if idx > len(self.l): 
      raise IndexError("Out of range")
    return self.l[idx:idx+self.size]

def safe_prn(str):
    import string
    ostr = ''
    for c in str:
        if c in string.printable and c not in "\t\n\r\x0b\x0c":
            ostr += c
        else:
            ostr += '.'
    return ostr

def hd(str, offset=0, header=True):
    ostr = ''
    if header: ostr += "           0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F\n"
    for i in range(0,len(str), 16):
        hexpart = ' '.join(Group(str[i:i+16].encode('hex'), 2))
        ostr += "%08X: %-48s %-16s\n" % (offset+i, hexpart, safe_prn(str[i:i+16]))
    return ostr

def decode_hex(str):
    str = ''.join(str.split())
    return str.decode('hex')