#!/usr/pkg/bin/python
"""reverse of 'dump' utility that comes with cygwin"""
import sys, os, re, codecs
from types import *
try:
 True
except: # old version of python, doesn't have True and False defined
 True, False = 1, 0
self = sys.argv.pop(0).split(os.sep)[-1]
help = "Usage: %s [-o OUTPUTFILE] [FILE...]\n" % self
hexdecode = codecs.getdecoder('hex_codec')
if len(sys.argv) < 1:
 sys.stderr.write(help)
 sys.exit(0)
output, outputfile = None, None
outputextension = ".exe" # appended to name of dumpfile when producing output
try:
 while sys.argv[0][0] == "-":
  flag = sys.argv.pop(0)
  if flag == "-o":
   outputfile = sys.argv.pop(0)
   if outputfile == "-":
    output = sys.stdout
   # you can specify "-o '*.o' a.dmp", makes a.dmp.o
   elif outputfile[0] == "*":
    outputextension = outputfile[1:]
   else:
    output = open(outputfile, "r")
except Exception, exception:
 sys.stderr.write(exception.value + "\n" + help)
 sys.exit(1)
for filename in sys.argv:
 infile = open(filename, "r")
 outfile = output
 if outfile is None:
  outfile = open(filename + outputextension, "wb")
 done = False
 while not done:
  line = infile.readline()
  if len(line) == 0:
   done = True
   break
  else:
   regexp = re.compile("^[0-9A-Fa-f]{8}\s+([0-9A-Fa-f]{2,4}\s+){1,8}")
   match = regexp.search(line)
   if type(match) is not NoneType:
    hexstring = ''.join(match.group().split()[1:])
    outfile.write(hexdecode(hexstring)[0])