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sherpa_romeo.py
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Mon, Dec 2, 13:29

sherpa_romeo.py
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# This Python file uses the following encoding: utf-8
from xmlDict import *
import urllib2
from werkzeug.contrib.cache import RedisCache
class SherpaRomeoSearch:
def searchPublisher(self, query):
cleanquery = query.replace(" ", "+")
url = "http://www.sherpa.ac.uk/romeo/api29.php?pub=" + cleanquery
self.parser = SherpaRomeoXMLParser()
self.parser.parseURL(url)
return self.parser.getPublishers()
def searchTitle(self, query):
cleanquery = query.replace(" ", "+")
url = "http://www.sherpa.ac.uk/romeo/api29.php?jtitle=" + cleanquery + "&qtype=contains"
self.parser = SherpaRomeoXMLParser()
self.parser.parseURL(url)
return self.parser.getTitles()
class SherpaRomeoXMLParser:
def __init__(self):
self.parsed = False
def parseURL(self, url):
print url
self.url = url
#example
#url = 'http://www.sherpa.ac.uk/romeo/api29.php?jtitle=Annals%20of%20Physics'
foundTitle = url.find("jtitle=")
if foundTitle != -1:
self.type = "title"
self.query = url[foundTitle + 7:(len(url) - 15)]
else:
self.type = "pub"
foundPublisher = url.find("pub=")
if foundPublisher != -1:
self.query = url[foundTitle + 4:len(url)]
cache = RedisCache("localhost", default_timeout=9000)
cachedXML = cache.get(self.type + ":" + self.query)
if not cachedXML:
print self.type + ":" + self.query + " is not cached!"
self.data = urllib2.urlopen(url).read()
root = ElementTree.XML(self.data)
self.xml = XmlDictConfig(root)
cache.set(self.type + ":" + self.query, self.data)
else:
self.data = cachedXML
root = ElementTree.XML(self.data)
self.xml = XmlDictConfig(root)
self.parsed = True
def getTitles(self):
titles = list()
if self.xml['header']['outcome'] == 'notFound' \
or self.xml['header']['outcome'] == 'failed':
return []
print self.xml['header']['outcome']
if self.xml['header']['outcome'] == 'singleJournal' \
or self.xml['header']['outcome'] == 'uniqueZetoc' :
return [self.xml['journals']['journal']['jtitle']]
titles = list()
for j in self.xml['journals']['journal']:
titles.append(j['jtitle'])
return titles
def getPublishers(self):
if self.xml['header']['outcome'] == 'notFound' \
or self.xml['header']['outcome'] == 'failed':
return []
#returns a list of publishers' names
publishers = list()
try:
pubs = self.xml['publishers']['publisher']
publishers.append(pubs['name'])
except TypeError:
#there are no publishers
#the query returned multiple results
for p in self.xml['publishers']['publisher']:
publishers.append(p['name'])
return publishers
def getConditions(self):
#returns a publisher=>conditions dictionary
if self.xml['header']['outcome'] == 'notFound' \
or self.xml['header']['outcome'] == 'failed'\
or self.xml['header']['outcome'] == 'uniqueZetoc' :
return {}
conditions = dict()
if self.xml['header']['outcome'] == 'singleJournal':
return self.xml['publishers']['publisher']['conditions']['condition']
try:
pubs = self.xml['publishers']['publisher']
except TypeError:
#there are no publishers
#maybe the query returned multiple results
url = "http://www.sherpa.ac.uk/romeo/api29.php?issn=" + self.getISSN()
data = urllib2.urlopen(url).read()
root = ElementTree.XML(data)
xml = XmlDictConfig(root)
return xml['publishers']['publisher']['conditions']['condition']
for p in pubs:
try:
conditions[p['name']] = p['conditions']['condition']
except TypeError:
#there are no conditions
#maybe the query returned multiple results
if self.getISSN() is None:
continue;
url = "http://www.sherpa.ac.uk/romeo/api29.php?issn=" + self.getISSN()
print url
data = urllib2.urlopen(url).read()
root = ElementTree.XML(data)
xml = XmlDictConfig(root)
return xml['publishers']['publisher']['conditions']['condition']
return conditions
def getISSN(self):
if self.xml['header']['outcome'] == 'notFound' \
or self.xml['header']['outcome'] == 'failed':
return []
if self.xml['header']['outcome'] == 'singleJournal'\
or self.xml['header']['outcome'] == 'uniqueZetoc' :
return self.xml['journals']['journal']['issn']
else:
issns = dict()
for j in self.xml['journals']['journal']:
if j['jtitle'].replace(" ", "+").lower() == self.query.lower():
return j['issn']
issns[j['jtitle']] = j['issn']
return issns

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