49 lines
1.3 KiB
Python
49 lines
1.3 KiB
Python
"""
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Serializer plugin interface.
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This module is useful for those wanting to write a serializer that can
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plugin to rdflib. If you are wanting to invoke a serializer you likely
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want to do so through the Graph class serialize method.
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TODO: info for how to write a serializer that can plugin to rdflib.
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See also rdflib.plugin
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"""
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from __future__ import annotations
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from typing import IO, TYPE_CHECKING, Any, Optional, TypeVar, Union
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from rdflib.term import URIRef
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if TYPE_CHECKING:
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from rdflib.graph import Graph
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__all__ = ["Serializer"]
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_StrT = TypeVar("_StrT", bound=str)
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class Serializer:
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def __init__(self, store: Graph):
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self.store: Graph = store
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self.encoding: str = "utf-8"
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self.base: Optional[str] = None
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def serialize(
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self,
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stream: IO[bytes],
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base: Optional[str] = None,
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encoding: Optional[str] = None,
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**args: Any,
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) -> None:
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"""Abstract method"""
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def relativize(self, uri: _StrT) -> Union[_StrT, URIRef]:
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base = self.base
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if base is not None and uri.startswith(base):
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# type error: Incompatible types in assignment (expression has type "str", variable has type "Node")
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uri = URIRef(uri.replace(base, "", 1)) # type: ignore[assignment]
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return uri
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