37 lines
1.0 KiB
Python
37 lines
1.0 KiB
Python
import abc
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import os
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from typing import Set, Dict
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assert Set # make pyflakes happy
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class AbstractParser(abc.ABC):
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""" This is the base classe of every parser.
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It might yield `ValueError` on instanciation on invalid files.
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"""
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meta_list = set() # type: Set[str]
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mimetypes = set() # type: Set[str]
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def __init__(self, filename: str) -> None:
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"""
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:raises ValueError: Raised upon an invalid file
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"""
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self.filename = filename
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fname, extension = os.path.splitext(filename)
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self.output_filename = fname + '.cleaned' + extension
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@abc.abstractmethod
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def get_meta(self) -> Dict[str, str]:
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pass # pragma: no cover
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@abc.abstractmethod
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def remove_all(self) -> bool:
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pass # pragma: no cover
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def remove_all_lightweight(self) -> bool:
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""" This method removes _SOME_ metadata.
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It might be useful to implement it for fileformats that do
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not support non-destructive cleaning.
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"""
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return self.remove_all()
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