InfiniTime/bootloader/ota-dfu-python/unpacker.py

53 lines
1.8 KiB
Python
Raw Permalink Normal View History

import os.path
import zipfile
import tempfile
import random
import string
import shutil
import re
from os.path import basename
class Unpacker(object):
#--------------------------------------------------------------------------
#
#--------------------------------------------------------------------------
def entropy(self, length):
2021-01-31 19:50:04 +00:00
return ''.join(random.choice('abcdefghijklmnopqrstuvwxyz') for i in range (length))
#--------------------------------------------------------------------------
#
#--------------------------------------------------------------------------
def unpack_zipfile(self, file):
if not os.path.isfile(file):
raise Exception("Error: file, not found!")
# Create unique working direction into which the zip file is expanded
self.unzip_dir = "{0}/{1}_{2}".format(tempfile.gettempdir(), os.path.splitext(basename(file))[0], self.entropy(6))
datfilename = ""
binfilename = ""
with zipfile.ZipFile(file, 'r') as zip:
files = [item.filename for item in zip.infolist()]
datfilename = [m.group(0) for f in files for m in [re.search('.*\.dat', f)] if m].pop()
binfilename = [m.group(0) for f in files for m in [re.search('.*\.bin', f)] if m].pop()
zip.extractall(r'{0}'.format(self.unzip_dir))
datfile = "{0}/{1}".format(self.unzip_dir, datfilename)
binfile = "{0}/{1}".format(self.unzip_dir, binfilename)
# print "DAT file: " + datfile
# print "BIN file: " + binfile
return binfile, datfile
#--------------------------------------------------------------------------
#
#--------------------------------------------------------------------------
def delete(self):
# delete self.unzip_dir and its contents
shutil.rmtree(self.unzip_dir)