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#!/usr/bin/env python3
from rdflib import URIRef, BNode, Literal, Graph, Namespace
from rdflib.namespace import RDF, NamespaceManager
from urllib.parse import urlparse
import sys
def first (it):
try:
return next (it)
except StopIteration:
return None
def humanList (l):
if len (l) == 0:
return ''
elif len (l) == 1:
return l[0]
else:
return ', '.join (l[:-1]) + ' and ' + l[-1]
def formatDomain (url):
d = urlparse (url).hostname
if d.startswith ('www.'):
d = d[4:]
return d
def formatPerson (s, g, n):
firstname = first (g.objects (n, s.givenName))
familyname = first (g.objects (n, s.familyName))
if firstname:
return '{} {}'.format (firstname, familyname)
else:
return familyname
def formatParent (s, g, n):
parent = first (g.objects (n, s.isPartOf))
parentname = first (g.objects (parent, s.name)) if parent else None
volume = first (g.objects (n, s.volumeNumber))
ret = ''
if parentname:
ret += '{}'.format (parentname)
if volume:
ret += ', volume {}'.format (volume)
issue = first (g.objects (parent, s.issueNumber))
if issue:
ret += ', issue {}'.format (issue)
return ret
if __name__ == '__main__':
g = Graph()
result = g.parse ("index.ttl", format='turtle')
s = Namespace("https://schema.org/")
for ref in result.objects (predicate=s.citation):
t = list (g.objects (ref, RDF.type))
assert len (t) == 1
t = t[0]
name = first (g.objects (ref, s.name))
authors = humanList ([formatPerson (s, g, author) for author in g.objects (ref, s.author)])
published = first (g.objects (ref, s.datePublished ))
refname = urlparse (ref).fragment
if not refname:
refname = first (g.objects (ref, s.alternateName))
ret = '.. [{}]'.format (refname)
if authors:
ret += ' {}:'.format (authors)
ret += ' *{}*.'.format (name)
parent = formatParent (s, g, ref)
if parent:
ret += ' {}.'.format (parent)
if published:
ret += ' {}.'.format (published)
urls = ['`{} <{}>`__'.format (formatDomain (url), url) for url in g.objects (ref, s.url)]
if urls:
ret += ' {}.'.format (', '.join (urls))
print (ret)
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