aboutsummaryrefslogtreecommitdiffstats
path: root/python/grobid2json.py
diff options
context:
space:
mode:
Diffstat (limited to 'python/grobid2json.py')
-rwxr-xr-xpython/grobid2json.py146
1 files changed, 146 insertions, 0 deletions
diff --git a/python/grobid2json.py b/python/grobid2json.py
new file mode 100755
index 0000000..ca460f8
--- /dev/null
+++ b/python/grobid2json.py
@@ -0,0 +1,146 @@
+#!/usr/bin/env python3
+
+"""
+NB: adapted to work as a library for PDF extraction. Will probably be
+re-written eventually to be correct, complete, and robust; this is just a
+first iteration.
+
+This script tries to extract everything from a GROBID TEI XML fulltext dump:
+
+- header metadata
+- affiliations
+- references (with context)
+- abstract
+- fulltext
+- tables, figures, equations
+
+A flag can be specified to disable copyright encumbered bits (--no-emcumbered):
+
+- abstract
+- fulltext
+- tables, figures, equations
+
+Prints JSON to stdout, errors to stderr
+"""
+
+import io
+import json
+import argparse
+import xml.etree.ElementTree as ET
+
+ns = "http://www.tei-c.org/ns/1.0"
+
+def all_authors(elem):
+ names = [' '.join([e.findtext('./{%s}forename' % ns) or '', e.findtext('./{%s}surname' % ns) or '']).strip()
+ for e in elem.findall('.//{%s}author/{%s}persName' % (ns, ns))]
+ return [dict(name=n) for n in names]
+
+
+def journal_info(elem):
+ journal = dict()
+ journal['name'] = elem.findtext('.//{%s}monogr/{%s}title' % (ns, ns))
+ journal['publisher'] = elem.findtext('.//{%s}publicationStmt/{%s}publisher' % (ns, ns))
+ if journal['publisher'] == '':
+ journal['publisher'] = None
+ journal['issn'] = elem.findtext('.//{%s}idno[@type="ISSN"]' % ns)
+ journal['eissn'] = elem.findtext('.//{%s}idno[@type="eISSN"]' % ns)
+ journal['volume'] = elem.findtext('.//{%s}biblScope[@unit="volume"]' % ns)
+ journal['issue'] = elem.findtext('.//{%s}biblScope[@unit="issue"]' % ns)
+ return journal
+
+
+def biblio_info(elem):
+ ref = dict()
+ ref['id'] = elem.attrib.get('{http://www.w3.org/XML/1998/namespace}id')
+ # Title stuff is messy in references...
+ ref['title'] = elem.findtext('.//{%s}analytic/{%s}title' % (ns, ns))
+ other_title = elem.findtext('.//{%s}monogr/{%s}title' % (ns, ns))
+ if other_title:
+ if ref['title']:
+ ref['journal'] = other_title
+ else:
+ ref['journal'] = None
+ ref['title'] = other_title
+ ref['authors'] = all_authors(elem)
+ ref['publisher'] = elem.findtext('.//{%s}publicationStmt/{%s}publisher' % (ns, ns))
+ if ref['publisher'] == '':
+ ref['publisher'] = None
+ date = elem.find('.//{%s}date[@type="published"]' % ns)
+ ref['date'] = (date != None) and date.attrib.get('when')
+ ref['volume'] = elem.findtext('.//{%s}biblScope[@unit="volume"]' % ns)
+ ref['issue'] = elem.findtext('.//{%s}biblScope[@unit="issue"]' % ns)
+ el = elem.find('.//{%s}ptr[@target]' % ns)
+ if el is not None:
+ ref['url'] = el.attrib['target']
+ # Hand correction
+ if ref['url'].endswith(".Lastaccessed"):
+ ref['url'] = ref['url'].replace(".Lastaccessed", "")
+ else:
+ ref['url'] = None
+ return ref
+
+
+def teixml2json(content, encumbered=True):
+
+ if type(content) == str:
+ content = io.StringIO(content)
+ elif type(content) == bytes:
+ content = io.BytesIO(content)
+
+ info = dict()
+
+ #print(content)
+ #print(content.getvalue())
+ tree = ET.parse(content)
+ tei = tree.getroot()
+
+ header = tei.find('.//{%s}teiHeader' % ns)
+ if header is None:
+ raise ValueError("XML does not look like TEI format")
+ info['title'] = header.findtext('.//{%s}analytic/{%s}title' % (ns, ns))
+ info['authors'] = all_authors(header.find('.//{%s}sourceDesc/{%s}biblStruct' % (ns, ns)))
+ info['journal'] = journal_info(header)
+ date = header.find('.//{%s}date[@type="published"]' % ns)
+ info['date'] = (date != None) and date.attrib.get('when')
+ info['doi'] = header.findtext('.//{%s}idno[@type="DOI"]' % ns)
+ if info['doi']:
+ info['doi'] = info['doi'].lower()
+
+ refs = []
+ for (i, bs) in enumerate(tei.findall('.//{%s}listBibl/{%s}biblStruct' % (ns, ns))):
+ ref = biblio_info(bs)
+ ref['index'] = i
+ refs.append(ref)
+ info['citations'] = refs
+
+ if encumbered:
+ el = tei.find('.//{%s}profileDesc/{%s}abstract' % (ns, ns))
+ info['abstract'] = (el or None) and " ".join(el.itertext()).strip()
+ el = tei.find('.//{%s}text/{%s}body' % (ns, ns))
+ info['body'] = (el or None) and " ".join(el.itertext()).strip()
+ el = tei.find('.//{%s}back/{%s}div[@type="acknowledgement"]' % (ns, ns))
+ info['acknowledgement'] = (el or None) and " ".join(el.itertext()).strip()
+ el = tei.find('.//{%s}back/{%s}div[@type="annex"]' % (ns, ns))
+ info['annex'] = (el or None) and " ".join(el.itertext()).strip()
+
+ return info
+
+def main(): # pragma no cover
+ parser = argparse.ArgumentParser(
+ description="GROBID TEI XML to JSON",
+ usage="%(prog)s [options] <teifile>...")
+ parser.add_argument("--no-encumbered",
+ action="store_true",
+ help="ignore errors loading individual WARC files")
+ parser.add_argument("teifiles", nargs='+')
+
+ args = parser.parse_args()
+
+ for filename in args.teifiles:
+ content = open(filename, 'r')
+ print(json.dumps(
+ teixml2json(content,
+ encumbered=(not args.no_encumbered))))
+
+if __name__=='__main__': # pragma no cover
+ main()