]>
jfr.im git - yt-dlp.git/blob - devscripts/make_lazy_extractors.py
2 from __future__
import unicode_literals
, print_function
4 from inspect
import getsource
7 from os
.path
import dirname
as dirn
10 print('WARNING: Lazy loading extractors is an experimental feature that may not always work', file=sys
.stderr
)
12 sys
.path
.insert(0, dirn(dirn((os
.path
.abspath(__file__
)))))
14 lazy_extractors_filename
= sys
.argv
[1]
15 if os
.path
.exists(lazy_extractors_filename
):
16 os
.remove(lazy_extractors_filename
)
18 # Block plugins from loading
19 os
.rename('ytdlp_plugins', 'ytdlp_plugins_blocked')
21 from yt_dlp
.extractor
import _ALL_CLASSES
22 from yt_dlp
.extractor
.common
import InfoExtractor
, SearchInfoExtractor
24 os
.rename('ytdlp_plugins_blocked', 'ytdlp_plugins')
26 with open('devscripts/lazy_load_template.py', 'rt') as f
:
27 module_template
= f
.read()
30 module_template
+ '\n' + getsource(InfoExtractor
.suitable
) + '\n',
31 'class LazyLoadSearchExtractor(LazyLoadExtractor):\n pass\n']
34 class {name}({bases}):
35 _VALID_URL = {valid_url!r}
39 make_valid_template
= '''
41 def _make_valid_url(cls):
46 def get_base_name(base
):
47 if base
is InfoExtractor
:
48 return 'LazyLoadExtractor'
49 elif base
is SearchInfoExtractor
:
50 return 'LazyLoadSearchExtractor'
55 def build_lazy_ie(ie
, name
):
56 valid_url
= getattr(ie
, '_VALID_URL', None)
57 s
= ie_template
.format(
59 bases
=', '.join(map(get_base_name
, ie
.__bases
__)),
62 if ie
.suitable
.__func
__ is not InfoExtractor
.suitable
.__func
__:
63 s
+= '\n' + getsource(ie
.suitable
)
64 if hasattr(ie
, '_make_valid_url'):
66 s
+= make_valid_template
.format(valid_url
=ie
._make
_valid
_url
())
70 # find the correct sorting and add the required base classes so that subclasses
71 # can be correctly created
72 classes
= _ALL_CLASSES
[:-1]
76 bases
= set(c
.__bases
__) - set((object, InfoExtractor
, SearchInfoExtractor
))
79 if b
not in classes
and b
not in ordered_cls
:
80 if b
.__name
__ == 'GenericIE':
86 if all(b
in ordered_cls
for b
in bases
):
90 ordered_cls
.append(_ALL_CLASSES
[-1])
93 for ie
in ordered_cls
:
95 src
= build_lazy_ie(ie
, name
)
96 module_contents
.append(src
)
97 if ie
in _ALL_CLASSES
:
100 module_contents
.append(
101 '_ALL_CLASSES = [{0}]'.format(', '.join(names
)))
103 module_src
= '\n'.join(module_contents
) + '\n'
105 with io
.open(lazy_extractors_filename
, 'wt', encoding
='utf-8') as f
: