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yt-dlp/yt_dlp/extractor/__init__.py
pukkandan 82d020804d
[extractor] Use classmethod/property where possible
and refactor lazy extractors accordingly.

This reduces the need to create extractor instances
2022-05-13 00:23:26 +05:30

56 lines
1.8 KiB
Python

import contextlib
import os
from ..utils import load_plugins
_LAZY_LOADER = False
if not os.environ.get('YTDLP_NO_LAZY_EXTRACTORS'):
with contextlib.suppress(ImportError):
from .lazy_extractors import * # noqa: F403
from .lazy_extractors import _ALL_CLASSES
_LAZY_LOADER = True
if not _LAZY_LOADER:
from .extractors import * # noqa: F403
_ALL_CLASSES = [ # noqa: F811
klass
for name, klass in globals().items()
if name.endswith('IE') and name != 'GenericIE'
]
_ALL_CLASSES.append(GenericIE) # noqa: F405
_PLUGIN_CLASSES = load_plugins('extractor', 'IE', globals())
_ALL_CLASSES = list(_PLUGIN_CLASSES.values()) + _ALL_CLASSES
def gen_extractor_classes():
""" Return a list of supported extractors.
The order does matter; the first extractor matched is the one handling the URL.
"""
return _ALL_CLASSES
def gen_extractors():
""" Return a list of an instance of every supported extractor.
The order does matter; the first extractor matched is the one handling the URL.
"""
return [klass() for klass in gen_extractor_classes()]
def list_extractor_classes(age_limit=None):
"""Return a list of extractors that are suitable for the given age, sorted by extractor name"""
yield from sorted(filter(
lambda ie: ie.is_suitable(age_limit) and ie != GenericIE, # noqa: F405
gen_extractor_classes()), key=lambda ie: ie.IE_NAME.lower())
yield GenericIE # noqa: F405
def list_extractors(age_limit=None):
"""Return a list of extractor instances that are suitable for the given age, sorted by extractor name"""
return [ie() for ie in list_extractor_classes(age_limit)]
def get_info_extractor(ie_name):
"""Returns the info extractor class with the given ie_name"""
return globals()[ie_name + 'IE']