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"""
Helper functions to parse an unstructured citation string using GROBID, then
fuzzy match using the result.
- try to parse string with GROBID REST API call
- transform the GROBID XML response to a simple dict/struct
TODO: more general versions which handle multiple reference strings in a batch?
"""
import io
import sys
import xml.etree.ElementTree as ET
from typing import Optional
from .grobid2json import biblio_info
def transform_grobid_ref_xml(raw_xml: str) -> Optional[dict]:
"""
Parses GROBID XML for the case of a single reference/citation string (eg,
not a full/propper TEI-XML fulltext document), and returns a dict.
"""
# first, remove any xmlns stuff, for consistent parsing
raw_xml = raw_xml.replace('xmlns="http://www.tei-c.org/ns/1.0"', "")
tree = ET.parse(io.StringIO(raw_xml))
root = tree.getroot()
ref = biblio_info(root, ns="")
if not any(ref.values()):
return None
return ref
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