Adds doi2bib

diff --git a/doi2bib b/doi2bib
new file mode 100755 (executable)
index 0000000..1c26d21
--- /dev/null
+++ b/doi2bib
@@ -0,0 +1,53 @@
+#!/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)