Delay initialization of InfoExtractors until they are needed

[youtube-dl] / youtube_dl / YoutubeDL.py

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index cd0805303b7f56228bfce502300c938e66c73830..f18a8e840553528703e79cf3dd2415173a568d0e 100755 (executable)
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -82,7 +82,7 @@ from .utils import (
     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 @@ class YoutubeDL(object):
     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 @@ class YoutubeDL(object):
         """
         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 @@ class YoutubeDL(object):
             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.')