78 lines
2.3 KiB
Python
78 lines
2.3 KiB
Python
import mimetypes
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import os
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import shutil
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import tempfile
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from typing import Dict, Union
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import mutagen
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from . import abstract, parser_factory
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class MutagenParser(abstract.AbstractParser):
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def __init__(self, filename):
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super().__init__(filename)
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try:
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mutagen.File(self.filename)
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except mutagen.MutagenError:
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raise ValueError
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def get_meta(self) -> Dict[str, Union[str, dict]]:
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f = mutagen.File(self.filename)
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if f.tags:
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return {k:', '.join(v) for k, v in f.tags.items()}
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return {}
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def remove_all(self) -> bool:
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shutil.copy(self.filename, self.output_filename)
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f = mutagen.File(self.output_filename)
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f.delete()
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f.save()
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return True
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class MP3Parser(MutagenParser):
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mimetypes = {'audio/mpeg', }
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def get_meta(self) -> Dict[str, Union[str, dict]]:
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metadata = {} # type: Dict[str, Union[str, dict]]
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meta = mutagen.File(self.filename).tags
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for key in meta:
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metadata[key.rstrip(' \t\r\n\0')] = ', '.join(map(str, meta[key].text))
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return metadata
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class OGGParser(MutagenParser):
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mimetypes = {'audio/ogg', }
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class FLACParser(MutagenParser):
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mimetypes = {'audio/flac', 'audio/x-flac'}
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def remove_all(self) -> bool:
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shutil.copy(self.filename, self.output_filename)
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f = mutagen.File(self.output_filename)
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f.clear_pictures()
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f.delete()
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f.save(deleteid3=True)
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return True
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def get_meta(self) -> Dict[str, Union[str, dict]]:
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meta = super().get_meta()
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for num, picture in enumerate(mutagen.File(self.filename).pictures):
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name = picture.desc if picture.desc else 'Cover %d' % num
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extension = mimetypes.guess_extension(picture.mime)
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if extension is None: # pragma: no cover
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meta[name] = 'harmful data'
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continue
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_, fname = tempfile.mkstemp()
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fname = fname + extension
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with open(fname, 'wb') as f:
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f.write(picture.data)
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p, _ = parser_factory.get_parser(fname) # type: ignore
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# Mypy chokes on ternaries :/
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meta[name] = p.get_meta() if p else 'harmful data' # type: ignore
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os.remove(fname)
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return meta
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