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import sys
import json
import datetime
from bs4 import BeautifulSoup
from bs4.element import NavigableString
from pylatexenc.latex2text import LatexNodes2Text
latex2text = LatexNodes2Text()
def parse_arxiv_authors(raw):
if not raw:
return []
authors = raw.split(', ')
if authors:
last = authors[-1].split(" and ")
if len(last) == 2:
authors[-1] = last[0]
authors.append(last[1])
authors = [latex2text.latex_to_text(a).strip() for a in authors]
return authors
def test_parse_arxiv_authors():
assert parse_arxiv_authors("Raphael Chetrite, Shamik Gupta, Izaak Neri and \\'Edgar Rold\\'an") == [
"Raphael Chetrite",
"Shamik Gupta",
"Izaak Neri",
"Édgar Roldán",
]
assert parse_arxiv_authors("Izaak Neri and \\'Edgar Rold\\'an") == [
"Izaak Neri",
"Édgar Roldán",
]
assert parse_arxiv_authors("Raphael Chetrite Shamik Gupta") == [
"Raphael Chetrite Shamik Gupta",
]
class ArxivRawXmlParser():
"""
Converts arxiv.org "arXivRaw" OAI-PMH XML records to fatcat release entities
TODO: this will require a special importer that keeps works together
TODO: arxiv_id lookup in API (rust) with no version specified should select
the "most recent" version; can be a simple sort?
"""
def __init__(self):
pass
def parse_file(self, handle):
# 1. open with beautiful soup
soup = BeautifulSoup(handle, "xml")
# 2. iterate over articles, call parse_article on each
for article in soup.find_all("record"):
resp = self.parse_record(article)
print(json.dumps(resp))
#sys.exit(-1)
def parse_record(self, record):
metadata = record.arXivRaw
extra = dict()
extra_arxiv = dict()
base_id = metadata.id.string
doi = None
if metadata.doi and metadata.doi.string:
doi = metadata.doi.string.lower().strip()
assert doi.startswith('10.')
title = latex2text.latex_to_text(metadata.title.string)
authors = parse_arxiv_authors(metadata.authors.string)
contribs = [dict(raw_name=a, role='author') for a in authors]
lang = "en" # the vast majority in english
if metadata.comments and metadata.comments.string:
comments = metadata.comments.string.strip()
extra_arxiv['comments'] = comments
if 'in french' in comments.lower():
lang = 'fr'
elif 'in spanish' in comments.lower():
lang = 'es'
elif 'in portuguese' in comments.lower():
lang = 'pt'
elif 'in hindi' in comments.lower():
lang = 'hi'
elif 'in japanese' in comments.lower():
lang = 'ja'
elif 'in german' in comments.lower():
lang = 'de'
elif 'simplified chinese' in comments.lower():
lang = 'zh'
elif 'in russian' in comments.lower():
lang = 'ru'
# more languages?
release_type = "article-journal"
if metadata.find('journal-ref') and metadata.find('journal-ref').string:
journal_ref = metadata.find('journal-ref').string.strip()
extra_arxiv['journal_ref'] = journal_ref
if "conf." in journal_ref.lower() or "proc." in journal_ref.lower():
release_type = "conference-paper"
if metadata.find('report-no') and metadata.find('report-no').string:
extra['number'] = metadata.find('report-no').string.strip()
release_type = "report"
if metadata.find('acm-class') and metadata.find('acm-class').string:
extra_arxiv['acm_class'] = metadata.find('acm_class').string.strip()
if metadata.categories and metadata.categories.string:
extra_arxiv['categories'] = metadata.categories.string.split()
license_slug = None
if metadata.license and metadata.license.string:
# XXX: convert URL to slug
license_slug = metadata.license.string.strip()
abstracts = None
if metadata.abstract:
abstracts = []
abst = metadata.abstract.string.strip()
orig = None
if '-----' in abst:
both = abst.split('-----')
abst = both[0].strip()
orig = both[1].strip()
if '$' in abst or '{' in abstr:
mime = "application/x-latex"
abst_plain = latex2text.latex_to_text(abst)
abstracts.append(dict(content=abst_plain, mime="text/plain", lang="en"))
else:
mime = "text/plain"
abstracts.append(dict(content=abst, mime=mime, lang="en"))
if orig:
abstracts.append(dict(content=orig, mime=mime))
if extra_arxiv:
extra['arxiv'] = extra_arxiv
if not extra:
extra = None
versions = []
for version in metadata.find_all('version'):
arxiv_id = base_id + version['version']
release_date = version.date.string.strip()
release_date = datetime.datetime.strptime(release_date, "%a, %d %b %Y %H:%M:%S %Z")
versions.append(dict(
work_id=None,
title=title,
#original_title
release_type="article-journal",
release_status='submitted', # XXX: source_type?
release_date=release_date.isoformat() + "Z",
release_year=release_date.year,
arxiv_id=arxiv_id,
#doi (see below)
#pmid
#pmcid
#isbn13 # never in Article
#volume
#issue
#pages
#publisher
language=lang,
#license_slug # not in MEDLINE
# content, mimetype, lang
abstracts=abstracts,
# raw_name, role, raw_affiliation, extra
contribs=contribs,
# name, type, publisher, issnl
# extra: issnp, issne, original_name, languages, country
#container=container, # very little/none; resolve via DOI?
# extra:
# withdrawn_date
# translation_of
# subtitle
# aliases
# container_name
# group-title
# pubmed: retraction refs
extra=extra,
))
# only apply DOI to most recent version (HACK)
if doi:
versions[-1]['doi'] = doi
versions[-1]['release_status'] = "published"
return base_id, versions
if __name__=='__main__':
parser = ArxivRawXmlParser()
parser.parse_file(open(sys.argv[1]))
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