1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
import os
import traceback
import typing
from knowit import __version__
from knowit.config import Config
from knowit.provider import Provider
from .providers import (
EnzymeProvider,
FFmpegProvider,
MediaInfoProvider,
MkvMergeProvider,
)
_provider_map = {
'mediainfo': MediaInfoProvider,
'ffmpeg': FFmpegProvider,
'mkvmerge': MkvMergeProvider,
'enzyme': EnzymeProvider,
}
provider_names = _provider_map.keys()
available_providers: typing.Dict[str, Provider] = {}
class KnowitException(Exception):
"""Exception raised when knowit encounters an internal error."""
def initialize(context: typing.Optional[typing.Mapping] = None) -> None:
"""Initialize knowit."""
if not available_providers:
context = context or {}
config = Config.build(context.get('config'))
for name, provider_cls in _provider_map.items():
general_config = getattr(config, 'general', {})
mapping = context.get(name) or general_config.get(name)
available_providers[name] = provider_cls(config, mapping)
def know(
video_path: typing.Union[str, os.PathLike],
context: typing.Optional[typing.MutableMapping] = None
) -> typing.Mapping:
"""Return a mapping of video metadata."""
video_path = os.fspath(video_path)
try:
context = context or {}
context.setdefault('profile', 'default')
initialize(context)
for name, provider in available_providers.items():
if name != (context.get('provider') or name):
continue
if provider.accepts(video_path):
result = provider.describe(video_path, context)
if result:
return result
return {}
except Exception:
raise KnowitException(debug_info(context=context, exc_info=True))
def dependencies(context: typing.Optional[typing.Mapping] = None) -> typing.Mapping:
"""Return all dependencies detected by knowit."""
deps = {}
try:
initialize(context)
for name, provider_cls in _provider_map.items():
if name in available_providers:
deps[name] = available_providers[name].version
else:
deps[name] = {}
except Exception:
pass
return deps
def _centered(value: str) -> str:
value = value[-52:]
return f'| {value:^53} |'
def debug_info(
context: typing.Optional[typing.MutableMapping] = None,
exc_info: bool = False,
) -> str:
lines = [
'+-------------------------------------------------------+',
_centered(f'KnowIt {__version__}'),
'+-------------------------------------------------------+'
]
first = True
for key, info in dependencies(context).items():
if not first:
lines.append(_centered(''))
first = False
for k, v in info.items():
lines.append(_centered(k))
lines.append(_centered(v))
if context:
debug_data = context.pop('debug_data', None)
lines.append('+-------------------------------------------------------+')
for k, v in context.items():
if v:
lines.append(_centered(f'{k}: {v}'))
if debug_data:
lines.append('+-------------------------------------------------------+')
lines.append(debug_data())
if exc_info:
lines.append('+-------------------------------------------------------+')
lines.append(traceback.format_exc())
lines.append('+-------------------------------------------------------+')
lines.append(_centered('Please report any bug or feature request at'))
lines.append(_centered('https://github.com/ratoaq2/knowit/issues.'))
lines.append('+-------------------------------------------------------+')
return '\n'.join(lines)
|
