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#!/usr/bin/python3
# Adapted from https://scipython.com/blog/doi-to-bibtex/
import sys
import pycurl
from io import BytesIO
#import urllib.request
#from urllib.error import HTTPError
BASE_URL = 'http://dx.doi.org/'
try:
doi = sys.argv[1]
except IndexError:
print('Usage:\n{} <doi>'.format(sys.argv[0]))
sys.exit(1)
url = BASE_URL + doi
# Urllib version
#req = urllib.request.Request(url)
#req.set_proxy('socks5://localhost:9050', 'socks')
#req.add_header('Accept', 'application/x-bibtex')
# PyCurl version with Tor support
# See http://pycurl.io/docs/latest/quickstart.html
buffer = BytesIO()
req = pycurl.Curl()
req.setopt(req.URL, url)
req.setopt(req.HTTPHEADER, ('Accept: application/x-bibtex',))
req.setopt(req.FOLLOWLOCATION, True)
req.setopt(req.WRITEDATA, buffer)
req.setopt(req.PROXY, 'socks5://localhost:9050')
try:
#with urllib.request.urlopen(req) as f:
# bibtex = f.read().decode()
#print(bibtex)
req.perform()
req.close()
body = buffer.getvalue()
# Body is a byte string.
# We have to know the encoding in order to print it to a text file
# such as standard output.
print(body.decode('iso-8859-1'))
except HTTPError as e:
if e.code == 404:
print('DOI not found.')
else:
print('Service unavailable.')
sys.exit(1)
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