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Add support for third-party extractors

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Other packages can register new extractors through the `youtube_dl.extractors`
setuptools entry-point:

    # in mypackage/setup.py
    setup(
        ...
        entry_points={
            'youtube_dl.extractors': [
                'myextractor = mypackage.extractor.MyExtractorIE',
            ],
        },
    )
This commit is contained in:
Dirley Rodrigues 2013-08-06 17:54:31 -03:00
parent 60e5428925
commit 8f2216b9f6
1 changed files with 21 additions and 1 deletions
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22
youtube_dl/extractor/__init__.py
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@ -1,5 +1,6 @@
from __future__ import unicode_literals
import pkg_resources
from .abc import ABCIE
from .academicearth import AcademicEarthCourseIE
from .addanime import AddAnimeIE
@ -541,6 +542,7 @@ from .zingmp3 import (
ZingMp3AlbumIE,
)
_ALL_CLASSES = [
klass
for name, klass in globals().items()
@ -553,7 +555,25 @@ 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]
# our extractors have priority over external extractors, but
# the GenericIE must be inserted later
extractors = [klass() for klass in _ALL_CLASSES[:-1]]
# load external extractors registered throguh the setuptools
# entry-point `youtube_dl.extractor.gen_extractors`
group = 'youtube_dl.extractors'
for entrypoint in pkg_resources.iter_entry_points(group=group):
# grab the callable that is the actual plugin
plugin = entrypoint.load()
# install the plugin
extractors.append(plugin())
extractors.append(GenericIE())
return extractors
def get_info_extractor(ie_name):