Initial commit for the new extractors module

test_extractor_module.py

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+#!/usr/bin/env python
+import youtube_dl.extractors as ex
+
+print('Testing the new IEs module')
+print(ex.gen_extractors())
+print(ex.get_info_extractor('Test'))
+ex.get_info_extractor('Test2').test()

youtube_dl/extractors/Test2IE.py

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+
+# Is that actually needed?, if I comment it, it doesn't fail in python2.6 or python2.7
+#from __future__ import absolute_import
+
+from .ie import *
+
+class Test2IE(BaseIETest):
+    IE_NAME = 'Test2'

youtube_dl/extractors/TestIE.py

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+
+
+
+class TestIE(object):
+    IE_NAME = 'Test'
+    @classmethod
+    def test(cls):
+        print("test class")

youtube_dl/extractors/__init__.py

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+
+
+# Here is where we add new extractors, the order is important.
+# You add the IE name without the IE suffix, i.e: for YoutubeIE you add 'Youtube'
+extractor_names = ['Test','Test2']
+
+
+extractor_classes = None
+
+def gen_extractors():
+    return [get_info_extractor(name)() for name in extractor_names]
+
+def ie_fullname(IE_name):
+    return '%sIE' % IE_name
+
+def get_ieclass_from_module(IE_name):
+    full_name = ie_fullname(IE_name)
+    module = __import__(full_name,
+                        globals(),
+                        level = 1 # We want to use the relative import, only needed in Python 3
+                        )
+    return getattr(module, full_name) # We get the IE class from the module object
+
+def gen_extractor_classes():
+    global extractor_classes
+    # We save the results for later use, it may save us some time
+    if extractor_classes is None:
+        # We must keep 2.6 compatibility, so no dict comprehension
+        extractor_classes = dict((ie_fullname(name), get_ieclass_from_module(name)) for name in extractor_names)
+    return extractor_classes
+
+def get_info_extractor(ie_name):
+    """Returns the info extractor class with the given ie_name"""
+    return gen_extractor_classes()[ie_name+'IE']

youtube_dl/extractors/ie.py

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+# Here should go the real base InfoExtractor class and all the modules needed.
+
+from ..utils import *
+
+class BaseIETest(object):
+    @classmethod
+    def test(cls):
+        print(cls.__name__ +' is a subclass of BaseIETest')