+#!/usr/bin/env python3
from __future__ import unicode_literals, print_function
from inspect import getsource
+import io
import os
from os.path import dirname as dirn
import sys
-print('WARNING: Lazy loading extractors is an experimental feature that may not always work', file=sys.stderr)
-
sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
lazy_extractors_filename = sys.argv[1]
if os.path.exists(lazy_extractors_filename):
os.remove(lazy_extractors_filename)
-from youtube_dl.extractor import _ALL_CLASSES
-from youtube_dl.extractor.common import InfoExtractor
+# Block plugins from loading
+plugins_dirname = 'ytdlp_plugins'
+plugins_blocked_dirname = 'ytdlp_plugins_blocked'
+if os.path.exists(plugins_dirname):
+ os.rename(plugins_dirname, plugins_blocked_dirname)
+
+from yt_dlp.extractor import _ALL_CLASSES
+from yt_dlp.extractor.common import InfoExtractor, SearchInfoExtractor
+
+if os.path.exists(plugins_blocked_dirname):
+ os.rename(plugins_blocked_dirname, plugins_dirname)
with open('devscripts/lazy_load_template.py', 'rt') as f:
module_template = f.read()
-module_contents = [module_template + '\n' + getsource(InfoExtractor.suitable)]
+CLASS_PROPERTIES = ['ie_key', 'working', '_match_valid_url', 'suitable', '_match_id', 'get_temp_id']
+module_contents = [
+ module_template,
+ *[getsource(getattr(InfoExtractor, k)) for k in CLASS_PROPERTIES],
+ '\nclass LazyLoadSearchExtractor(LazyLoadExtractor):\n pass\n']
ie_template = '''
-class {name}(LazyLoadExtractor):
- _VALID_URL = {valid_url!r}
+class {name}({bases}):
_module = '{module}'
'''
'''
+def get_base_name(base):
+ if base is InfoExtractor:
+ return 'LazyLoadExtractor'
+ elif base is SearchInfoExtractor:
+ return 'LazyLoadSearchExtractor'
+ else:
+ return base.__name__
+
+
def build_lazy_ie(ie, name):
- valid_url = getattr(ie, '_VALID_URL', None)
s = ie_template.format(
name=name,
- valid_url=valid_url,
+ bases=', '.join(map(get_base_name, ie.__bases__)),
module=ie.__module__)
+ valid_url = getattr(ie, '_VALID_URL', None)
+ if valid_url:
+ s += f' _VALID_URL = {valid_url!r}\n'
+ if not ie._WORKING:
+ s += ' _WORKING = False\n'
if ie.suitable.__func__ is not InfoExtractor.suitable.__func__:
- s += '\n' + getsource(ie.suitable)
+ s += f'\n{getsource(ie.suitable)}'
if hasattr(ie, '_make_valid_url'):
# search extractors
s += make_valid_template.format(valid_url=ie._make_valid_url())
return s
+
+# find the correct sorting and add the required base classes so that subclasses
+# can be correctly created
+classes = _ALL_CLASSES[:-1]
+ordered_cls = []
+while classes:
+ for c in classes[:]:
+ bases = set(c.__bases__) - set((object, InfoExtractor, SearchInfoExtractor))
+ stop = False
+ for b in bases:
+ if b not in classes and b not in ordered_cls:
+ if b.__name__ == 'GenericIE':
+ exit()
+ classes.insert(0, b)
+ stop = True
+ if stop:
+ break
+ if all(b in ordered_cls for b in bases):
+ ordered_cls.append(c)
+ classes.remove(c)
+ break
+ordered_cls.append(_ALL_CLASSES[-1])
+
names = []
-for ie in list(sorted(_ALL_CLASSES[:-1], key=lambda cls: cls.ie_key())) + _ALL_CLASSES[-1:]:
- name = ie.ie_key() + 'IE'
+for ie in ordered_cls:
+ name = ie.__name__
src = build_lazy_ie(ie, name)
module_contents.append(src)
- names.append(name)
+ if ie in _ALL_CLASSES:
+ names.append(name)
module_contents.append(
- '_ALL_CLASSES = [{0}]'.format(', '.join(names)))
+ '\n_ALL_CLASSES = [{0}]'.format(', '.join(names)))
module_src = '\n'.join(module_contents) + '\n'
-with open(lazy_extractors_filename, 'wt') as f:
+with io.open(lazy_extractors_filename, 'wt', encoding='utf-8') as f:
f.write(module_src)