tmcpr recovery script

recover.py

#!/bin/python
from zipfile import ZipFile
import struct
import sys
import time

def recover(broken):
  duration = 0
  with open(broken) as bf:
    while True:
      bDuration = bf.read(4)
      if len(bDuration) < 4: break
      duration = struct.unpack('>i', bDuration)[0]
      bLength = bf.read(4)
      if len(bLength) < 4: break
      length = struct.unpack('>i', bLength)[0]
      if len(bf.read(length)) < length: break
  with ZipFile(broken[:-5]+'mcpr', 'w') as rf:
    rf.write(broken, 'recording.tmcpr')
    rf.writestr('metaData.json', '{"singleplayer":true,"serverName":"Python tmcpr recovery","duration":'+str(duration)+',"date":'+str(int(time.time()*1000))+',"mcversion":"1.8","fileFormat":"MCPR","fileFormatVersion":1,"generator":"Python tmcpr recovery","selfId":-1,"players":[]}')

if __name__ == '__main__':
  for f in sys.argv[1:]: recover(f)