encoding-unzip.py

import sys
import os
import shutil
import zipfile

def run():
    encoding_name = sys.argv[1]
    path = len(sys.argv) > 3 and sys.argv[3] or ""
    z = zipfile.ZipFile(sys.argv[2])
    for info in z.infolist():
        name = info.filename.encode("cp437").decode(encoding_name)

        member = info
        targetpath = path
        # build the destination pathname, replacing
        # forward slashes to platform specific separators.
        # Strip trailing path separator, unless it represents the root.
        if (targetpath[-1:] in (os.path.sep, os.path.altsep)
            and len(os.path.splitdrive(targetpath)[1]) > 1):
            targetpath = targetpath[:-1]

        # don't include leading "/" from file name if present
        if name[0] == '/':
            targetpath = os.path.join(targetpath, name[1:])
        else:
            targetpath = os.path.join(targetpath, name)

        targetpath = os.path.normpath(targetpath)

        # Create all upper directories if necessary.
        upperdirs = os.path.dirname(targetpath)
        if upperdirs and not os.path.exists(upperdirs):
            os.makedirs(upperdirs)

        if member.filename[-1] == '/':
            if not os.path.isdir(targetpath):
                os.mkdir(targetpath)
            continue

        source = z.open(info)
        target = open(targetpath, "wb")
        shutil.copyfileobj(source, target)
        source.close()
        target.close()


    z.close()


run()