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import argparse
import json
import logging
import os
import sys
import typing
from argparse import ArgumentParser
import yaml
from knowit import (
__url__,
__version__,
api,
)
from knowit.provider import ProviderError
from knowit.serializer import (
get_json_encoder,
get_yaml_dumper,
)
from knowit.utils import recurse_paths
logging.basicConfig(stream=sys.stdout, format='%(message)s')
logging.getLogger('CONSOLE').setLevel(logging.INFO)
logging.getLogger('knowit').setLevel(logging.ERROR)
console = logging.getLogger('CONSOLE')
logger = logging.getLogger('knowit')
def build_argument_parser() -> ArgumentParser:
"""Build the argument parser."""
opts = ArgumentParser()
opts.add_argument(
dest='videopath',
help='Path to the video to introspect',
nargs='*',
type=str,
)
provider_opts = opts.add_argument_group('Providers')
provider_opts.add_argument(
'-p',
'--provider',
dest='provider',
help='The provider to be used: mediainfo, ffmpeg, mkvmerge or enzyme.',
type=str,
)
output_opts = opts.add_argument_group('Output')
output_opts.add_argument(
'--debug',
action='store_true',
dest='debug',
help='Print information for debugging knowit and for reporting bugs.'
)
output_opts.add_argument(
'--report',
action='store_true',
dest='report',
help='Parse media and report all non-detected values'
)
output_opts.add_argument(
'-y',
'--yaml',
action='store_true',
dest='yaml',
help='Display output in yaml format'
)
output_opts.add_argument(
'-N',
'--no-units',
action='store_true',
dest='no_units',
help='Display output without units'
)
output_opts.add_argument(
'-P',
'--profile',
dest='profile',
help='Display values according to specified profile: code, default, human, technical',
type=str,
)
conf_opts = opts.add_argument_group('Configuration')
conf_opts.add_argument(
'--mediainfo',
dest='mediainfo',
help='The location to search for MediaInfo binaries',
type=str,
)
conf_opts.add_argument(
'--ffmpeg',
dest='ffmpeg',
help='The location to search for ffprobe (FFmpeg) binaries',
type=str,
)
conf_opts.add_argument(
'--mkvmerge',
dest='mkvmerge',
help='The location to search for mkvmerge (MKVToolNix) binaries',
type=str,
)
information_opts = opts.add_argument_group('Information')
information_opts.add_argument(
'--version',
dest='version',
action='store_true',
help='Display knowit version.'
)
return opts
def knowit(
video_path: typing.Union[str, os.PathLike],
options: argparse.Namespace,
context: typing.MutableMapping,
) -> typing.Mapping:
"""Extract video metadata."""
context['path'] = video_path
if not options.report:
console.info('For: %s', video_path)
else:
console.info('Parsing: %s', video_path)
info = api.know(video_path, context)
if not options.report:
console.info('Knowit %s found: ', __version__)
console.info(dumps(info, options, context))
return info
def _as_yaml(
info: typing.Mapping[str, typing.Any],
context: typing.Mapping,
) -> str:
"""Convert info to string using YAML format."""
data = {info['path']: info} if 'path' in info else info
return yaml.dump(
data,
Dumper=get_yaml_dumper(context),
default_flow_style=False,
allow_unicode=True,
sort_keys=False,
)
def _as_json(
info: typing.Mapping[str, typing.Any],
context: typing.Mapping,
) -> str:
"""Convert info to string using JSON format."""
return json.dumps(
info,
cls=get_json_encoder(context),
indent=4,
ensure_ascii=False,
)
def dumps(
info: typing.Mapping[str, typing.Any],
options: argparse.Namespace,
context: typing.Mapping,
) -> str:
"""Convert info to string using json or yaml format."""
convert = _as_yaml if options.yaml else _as_json
return convert(info, context)
def main(args: typing.Optional[typing.List[str]] = None) -> None:
"""Execute main function for entry point."""
argument_parser = build_argument_parser()
args = args or sys.argv[1:]
options = argument_parser.parse_args(args)
if options.debug:
logger.setLevel(logging.DEBUG)
logging.getLogger('enzyme').setLevel(logging.INFO)
else:
logger.setLevel(logging.WARNING)
paths = recurse_paths(options.videopath)
if not paths:
if options.version:
console.info(api.debug_info())
else:
argument_parser.print_help()
return
report: typing.MutableMapping[str, str] = {}
for i, video_path in enumerate(paths):
try:
context = {k: v for k, v in vars(options).items() if v is not None}
if options.report:
context['report'] = report
else:
del context['report']
knowit(video_path, options, context)
except ProviderError:
logger.exception('Error when processing video')
except OSError:
logger.exception('OS error when processing video')
except UnicodeError:
logger.exception('Character encoding error when processing video')
except api.KnowitException as e:
logger.error(e)
if options.report and i % 20 == 19 and report:
console.info('Unknown values so far:')
console.info(dumps(report, options, vars(options)))
if options.report:
if report:
console.info('Knowit %s found unknown values:', __version__)
console.info(dumps(report, options, vars(options)))
console.info('Please report them at %s', __url__)
else:
console.info('Knowit %s knows everything. :-)', __version__)
if __name__ == '__main__':
main(sys.argv[1:])
|
