47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
import hashlib
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from rdflib import Graph
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from rdflib.namespace import NamespaceManager
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def iri2namespace(iri: str, ontology: bool = False) -> str:
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"""Convert an IRI to a namespace string.
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Args:
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iri: The IRI to convert.
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ontology: If True, append '#' for ontology namespace, otherwise '/'.
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Returns:
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str: The converted namespace string.
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"""
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iri = iri.rstrip("#")
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return f"{iri}#" if ontology else f"{iri}/"
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def get_rdflib_namespace_mappings() -> dict:
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g = Graph()
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ns_manager = NamespaceManager(g)
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return {str(uri): prefix for prefix, uri in ns_manager.namespaces()}
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CONVENTIONAL_MAPPINGS = get_rdflib_namespace_mappings()
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def render_text_hash(text: str, digits: int | None = 12) -> str:
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"""Generate a SHA-256 hash for the given text.
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This is the single hashing entry point for the entire codebase.
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All modules that need to derive a hash from text should use this function
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instead of calling ``hashlib`` directly.
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Args:
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text: The text to hash.
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digits: Number of hex digits to return (default: 12).
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Pass ``None`` to return the full 64-character hex digest.
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Returns:
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A hex string hash of the text.
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"""
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digest = hashlib.sha256(text.encode()).hexdigest()
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return digest[:digits] if digits is not None else digest
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