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Delay initialization of InfoExtractors until they are needed

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This commit is contained in:
Jaime Marquínez Ferrándiz 2016-02-10 13:16:18 +01:00
parent 568d2f78d6
commit e52d7f85f2
2 changed files with 14 additions and 5 deletions
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10
youtube_dl/YoutubeDL.py
View file

@ -82,7 +82,7 @@
YoutubeDLHandler,
)
from .cache import Cache
from .extractor import get_info_extractor, gen_extractors
from .extractor import get_info_extractor, gen_extractor_classes
from .downloader import get_suitable_downloader
from .downloader.rtmp import rtmpdump_version
from .postprocessor import (
@ -378,8 +378,9 @@ def warn_if_short_id(self, argv):
def add_info_extractor(self, ie):
"""Add an InfoExtractor object to the end of the list."""
self._ies.append(ie)
self._ies_instances[ie.ie_key()] = ie
ie.set_downloader(self)
if not isinstance(ie, type):
self._ies_instances[ie.ie_key()] = ie
ie.set_downloader(self)
def get_info_extractor(self, ie_key):
"""
@ -397,7 +398,7 @@ def add_default_info_extractors(self):
"""
Add the InfoExtractors returned by gen_extractors to the end of the list
"""
for ie in gen_extractors():
for ie in gen_extractor_classes():
self.add_info_extractor(ie)
def add_post_processor(self, pp):
@ -661,6 +662,7 @@ def extract_info(self, url, download=True, ie_key=None, extra_info={},
if not ie.suitable(url):
continue
ie = self.get_info_extractor(ie.ie_key())
if not ie.working():
self.report_warning('The program functionality for this site has been marked as broken, '
'and will probably not work.')

9
youtube_dl/extractor/__init__.py
View file

@ -997,11 +997,18 @@
_ALL_CLASSES.append(GenericIE)
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 _ALL_CLASSES]
return [klass() for klass in gen_extractor_classes()]
def list_extractors(age_limit):