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look up bibliographical information from a doi

this python script takes one or more doi as input (command line arguments) and gives bibtex entries back which carry the information provided by crossref. you have to register there and enter the api key they give you in this script (5th line).

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#!/usr/bin/env python
 
debug = False
 
crossref_api_key = 'your_crossref_api_key'
 
# get the doi
import sys
from string import strip
for arg in sys.argv[1:]:
    arg = strip(arg)
    arg = strip(arg, chars="doi:")
    arg = strip(arg, chars="http://")
    arg = strip(arg, chars="dx.doi.org/")
    doi = strip(arg)
 
    # clear from previous
    text_journal_title = ""
    text_year = ""
    text_volume = ""
    text_issue = ""
    text_title = ""
    text_first_author_surname = ""
    text_first_page = ""
    text_last_page = ""
    authorlist = []
 
    # download the xml
    import urllib
    from xml.dom import minidom
    usock = urllib.urlopen('http://www.crossref.org/openurl/?id=doi:'+doi+'&noredirect=true&pid='+crossref_api_key+'&format=unixref')
    xmldoc = minidom.parse(usock)
    usock.close()
 
    if debug:
        print xmldoc.toxml()
    print ""
 
    a = xmldoc.getElementsByTagName("doi_records")[0]
    b = a.getElementsByTagName("doi_record")[0]
    c = b.getElementsByTagName("crossref")[0]
    d = c.getElementsByTagName("journal")[0]
 
    journal_meta = d.getElementsByTagName("journal_metadata")[0]
    journal_title = journal_meta.getElementsByTagName("full_title")[0]
    text_journal_title = journal_title.firstChild.data#.encode('ascii', 'ignore')
 
    journal_issue = d.getElementsByTagName("journal_issue")[0]
    date = journal_issue.getElementsByTagName("publication_date")[0]
    year = date.getElementsByTagName("year")[0]
    text_year = year.firstChild.data#.encode('ascii', 'ignore')
 
    try:
        journal_volume = journal_issue.getElementsByTagName("journal_volume")[0]
        volume = journal_issue.getElementsByTagName("volume")[0]
        text_volume = volume.firstChild.data#.encode('ascii', 'ignore')
    except IndexError:
        pass
 
    try:
        issue = journal_issue.getElementsByTagName("issue")[0]
        text_issue = issue.firstChild.data#.encode('ascii', 'ignore')
    except IndexError:
        pass
 
    journal_article = d.getElementsByTagName("journal_article")[0]
    titles = journal_article.getElementsByTagName("titles")[0]
    title = titles.getElementsByTagName("title")[0]
    text_title = title.firstChild.data#.encode('ascii', 'ignore')
 
    contributors = journal_article.getElementsByTagName("contributors")[0]
    for person_name in contributors.getElementsByTagName("person_name"):
        text_given_name = ""
        text_surname = ""
        # get names
        given_name = person_name.getElementsByTagName("given_name")[0]
        text_given_name = given_name.firstChild.data#.encode('ascii', 'ignore')
        surname = person_name.getElementsByTagName("surname")[0]
        text_surname = surname.firstChild.data#.encode('ascii', 'ignore')
        authorlist.append(text_surname+", "+text_given_name)
        #first author?
        sequence = person_name.attributes.getNamedItem("sequence")
        if sequence.nodeValue == 'first':
            text_first_author_surname = text_surname
 
    try:
        pages = journal_article.getElementsByTagName("pages")[0]
    except:
        pages = None
    try:
        first_page = pages.getElementsByTagName("first_page")[0]
        text_first_page = first_page.firstChild.data#.encode('ascii', 'ignore')
    except:
        pass
    try:
        last_page = pages.getElementsByTagName("last_page")[0]
        text_last_page = last_page.firstChild.data#.encode('ascii', 'ignore')
    except:
        pass
    # physical review
    if pages == None:
        try:
            pages = journal_article.getElementsByTagName("publisher_item")[0]
        except:
            pages = None
        try:
            first_page = pages.getElementsByTagName("item_number")[0]
            text_first_page = first_page.firstChild.data#.encode('ascii', 'ignore')
        except:
            pass
 
    # output
 
    print "@ARTICLE{"+text_first_author_surname+text_year[-2:]+","
    print "author = {"+" and ".join(authorlist)+"},"
    print "title = {"+text_title+"},"
    print "journal = {"+text_journal_title+"},"
    if not text_volume == "":
        print "volume = {"+text_volume+"},"
    if not text_issue == "":
        print "number = {"+text_issue+"},"
    print "year = {"+text_year+"},"
    if ((text_first_page != "") and (text_last_page != "")):
        print "pages = {"+text_first_page+"-"+text_last_page+"},"
    if ((text_first_page != "") and (text_last_page == "")):
        print "pages = {"+text_first_page+"},"
    print "doi = {"+doi+"},"
    print "}"

This entry was posted on Wednesday, October 5th, 2011 at 14:26 and is filed under misc. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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