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Commit | Line | Data |
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cc52de43 | 1 | #!/usr/bin/env python3 |
54007a45 | 2 | |
3 | # Allow direct execution | |
21633673 | 4 | import os |
779822d9 JMF |
5 | import sys |
6 | ||
e5a998f3 | 7 | sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__)))) |
779822d9 | 8 | |
779822d9 | 9 | |
54007a45 | 10 | from inspect import getsource |
11 | ||
115add43 | 12 | from devscripts.utils import get_filename_args, read_file, write_file |
13 | ||
82d02080 | 14 | NO_ATTR = object() |
8f97a15d | 15 | STATIC_CLASS_PROPERTIES = ['IE_NAME', 'IE_DESC', 'SEARCH_KEY', '_VALID_URL', '_WORKING', '_NETRC_MACHINE', 'age_limit'] |
82d02080 | 16 | CLASS_METHODS = [ |
24146491 | 17 | 'ie_key', 'working', 'description', 'suitable', '_match_valid_url', '_match_id', 'get_temp_id', 'is_suitable' |
82d02080 | 18 | ] |
19 | IE_TEMPLATE = ''' | |
169d836f | 20 | class {name}({bases}): |
82d02080 | 21 | _module = {module!r} |
779822d9 | 22 | ''' |
115add43 | 23 | MODULE_TEMPLATE = read_file('devscripts/lazy_load_template.py') |
82d02080 | 24 | |
25 | ||
26 | def main(): | |
115add43 | 27 | lazy_extractors_filename = get_filename_args(default_outfile='yt_dlp/extractor/lazy_extractors.py') |
82d02080 | 28 | if os.path.exists(lazy_extractors_filename): |
29 | os.remove(lazy_extractors_filename) | |
30 | ||
31 | _ALL_CLASSES = get_all_ies() # Must be before import | |
32 | ||
33 | from yt_dlp.extractor.common import InfoExtractor, SearchInfoExtractor | |
34 | ||
35 | DummyInfoExtractor = type('InfoExtractor', (InfoExtractor,), {'IE_NAME': NO_ATTR}) | |
36 | module_src = '\n'.join(( | |
37 | MODULE_TEMPLATE, | |
38 | ' _module = None', | |
39 | *extra_ie_code(DummyInfoExtractor), | |
40 | '\nclass LazyLoadSearchExtractor(LazyLoadExtractor):\n pass\n', | |
41 | *build_ies(_ALL_CLASSES, (InfoExtractor, SearchInfoExtractor), DummyInfoExtractor), | |
42 | )) | |
43 | ||
115add43 | 44 | write_file(lazy_extractors_filename, f'{module_src}\n') |
82d02080 | 45 | |
46 | ||
47 | def get_all_ies(): | |
48 | PLUGINS_DIRNAME = 'ytdlp_plugins' | |
49 | BLOCKED_DIRNAME = f'{PLUGINS_DIRNAME}_blocked' | |
50 | if os.path.exists(PLUGINS_DIRNAME): | |
51 | os.rename(PLUGINS_DIRNAME, BLOCKED_DIRNAME) | |
52 | try: | |
560738f3 | 53 | from yt_dlp.extractor.extractors import _ALL_CLASSES |
82d02080 | 54 | finally: |
55 | if os.path.exists(BLOCKED_DIRNAME): | |
56 | os.rename(BLOCKED_DIRNAME, PLUGINS_DIRNAME) | |
57 | return _ALL_CLASSES | |
58 | ||
59 | ||
60 | def extra_ie_code(ie, base=None): | |
61 | for var in STATIC_CLASS_PROPERTIES: | |
62 | val = getattr(ie, var) | |
63 | if val != (getattr(base, var) if base else NO_ATTR): | |
64 | yield f' {var} = {val!r}' | |
65 | yield '' | |
66 | ||
67 | for name in CLASS_METHODS: | |
68 | f = getattr(ie, name) | |
69 | if not base or f.__func__ != getattr(base, name).__func__: | |
70 | yield getsource(f) | |
71 | ||
72 | ||
73 | def build_ies(ies, bases, attr_base): | |
74 | names = [] | |
75 | for ie in sort_ies(ies, bases): | |
76 | yield build_lazy_ie(ie, ie.__name__, attr_base) | |
77 | if ie in ies: | |
78 | names.append(ie.__name__) | |
79 | ||
80 | yield f'\n_ALL_CLASSES = [{", ".join(names)}]' | |
81 | ||
82 | ||
83 | def sort_ies(ies, ignored_bases): | |
84 | """find the correct sorting and add the required base classes so that subclasses can be correctly created""" | |
85 | classes, returned_classes = ies[:-1], set() | |
86 | assert ies[-1].__name__ == 'GenericIE', 'Last IE must be GenericIE' | |
87 | while classes: | |
88 | for c in classes[:]: | |
89 | bases = set(c.__bases__) - {object, *ignored_bases} | |
90 | restart = False | |
5b836d47 | 91 | for b in sorted(bases, key=lambda x: x.__name__): |
82d02080 | 92 | if b not in classes and b not in returned_classes: |
93 | assert b.__name__ != 'GenericIE', 'Cannot inherit from GenericIE' | |
94 | classes.insert(0, b) | |
95 | restart = True | |
96 | if restart: | |
97 | break | |
98 | if bases <= returned_classes: | |
99 | yield c | |
100 | returned_classes.add(c) | |
101 | classes.remove(c) | |
102 | break | |
103 | yield ies[-1] | |
104 | ||
105 | ||
106 | def build_lazy_ie(ie, name, attr_base): | |
107 | bases = ', '.join({ | |
108 | 'InfoExtractor': 'LazyLoadExtractor', | |
109 | 'SearchInfoExtractor': 'LazyLoadSearchExtractor', | |
110 | }.get(base.__name__, base.__name__) for base in ie.__bases__) | |
111 | ||
112 | s = IE_TEMPLATE.format(name=name, module=ie.__module__, bases=bases) | |
82d02080 | 113 | return s + '\n'.join(extra_ie_code(ie, attr_base)) |
114 | ||
115 | ||
116 | if __name__ == '__main__': | |
117 | main() |