extract a zip file with non-utf8 encoded filenames under linux

unzip.py

#!python

import zipfile
import os


def unzip(filename, output_dir=".", filename_encode="gbk"):
    fp = zipfile.ZipFile(filename, "r")

    # get name list
    nlist = fp.namelist()

    for name in nlist:

        # decode filename
        n1 = name.decode(filename_encode)

        # ignore directory
        if n1.endswith("/"):
            continue

        # full filename
        n2 = os.path.join(output_dir, n1)

        # directory name
        d = os.path.dirname(n2)
        if not os.path.isdir(d):
            os.makedirs(d, 0755)

        # extract content
        with open(n2, "wb") as fp1:
            fp1.write(fp.read(name))

    fp.close()