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gallery-dl/gallery_dl/downloader/__init__.py
2021-03-01 01:27:02 +01:00

47 lines
1012 B
Python

# -*- coding: utf-8 -*-
# Copyright 2015-2021 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
"""Downloader modules"""
modules = [
"http",
"text",
"ytdl",
]
def find(scheme):
"""Return downloader class suitable for handling the given scheme"""
try:
return _cache[scheme]
except KeyError:
pass
cls = None
if scheme == "https":
scheme = "http"
if scheme in modules: # prevent unwanted imports
try:
module = __import__(scheme, globals(), None, (), 1)
except ImportError:
pass
else:
cls = module.__downloader__
if scheme == "http":
_cache["http"] = _cache["https"] = cls
else:
_cache[scheme] = cls
return cls
# --------------------------------------------------------------------
# internals
_cache = {}