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#!/usr/bin/env python3
import sys
import argparse
import urllib.request
import xml.etree.cElementTree as ET
def doi_to_filename(doi):
url = 'https://doi.org/%s' % doi
headers = {'Accept': 'application/vnd.crossref.unixref+xml;q=1,' +
'application/rdf+xml;q=0.5'}
# doi.org API request
try:
resp = request(url, headers)
except Exception as err:
raise ValueError('error making API request; invalid DOI? %s' % err)
# derive filename from XML response
try:
xml_root = get_xml_root(resp)
filename = get_filename_from_xml(xml_root)
except Exception as err:
raise ValueError('error parsing XML response; invalid DOI? %s' % err)
return filename
def request(url, headers):
conn = urllib.request.Request(
url,
headers=headers
)
r = urllib.request.urlopen(conn)
return r.read().decode('utf-8')
def get_xml_root(resp):
tree = ET.ElementTree(ET.fromstring(resp))
return tree.getroot()
def get_filename_from_xml(xml_root):
title = None
year = None
authors = []
title = xml_root.find('.//title').text
if not title:
raise ValueError('title could not be parsed, aborting...')
year = xml_root.find('.//year').text
if year:
year = ' (%s)' % year
else:
year = ''
for a in xml_root.iter('surname'):
authors.append(a.text)
if authors:
authors = ' - ' + ', '.join(authors)
else:
authors = ''
filename = title + year + authors
return filename
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