def get_download_filename()

in atomresponder/s3_mixin.py [0:0]

• 18 lines of code
• 5 McCabe index (conditional complexity)

    def get_download_filename(key=None, overridden_name=None):
        safe_basefile = make_filename_re.sub('_', os.path.basename(overridden_name if overridden_name is not None else key))
        deduped_basefile = multiple_underscore_re.sub('_', safe_basefile)

        parts = extract_extension.match(deduped_basefile)
        if parts:
            nameonly = parts.group("basename")
            extension = "." + parts.group("extension")
        else:
            nameonly = deduped_basefile
            extension = ""

        number_part = ""
        n=0
        while True:
            path = os.path.join(settings.ATOM_RESPONDER_DOWNLOAD_PATH, nameonly + number_part + extension)
            if not os.path.exists(path):
                return path
            n+=1
            number_part = "-{0}".format(n)