Created
August 11, 2011 17:43
-
-
Save srikanthlogic/1140266 to your computer and use it in GitHub Desktop.
AppEngine Handler code to perform Interwiki based URL Redirection
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #!/usr/bin/env python | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| # | |
| import cgi | |
| import datetime | |
| import wsgiref.handlers | |
| from BeautifulSoup import BeautifulSoup | |
| import urllib2 | |
| from google.appengine.ext import webapp | |
| class MainPage(webapp.RequestHandler): | |
| def get(self): | |
| self.response.out.write('<html><title>Interwiki Redirect Service</title><body>') | |
| self.response.out.write('<h1><center>Interwiki Redirect Service.</center></h1><br/><br/>') | |
| self.response.out.write('<ul><li>Service to provide redirects to Language Wikipedias using Interwiki links existing in English Wikipedia</li>') | |
| self.response.out.write('<li>Use URL structure http://interwikiredir.appspot.com/[langcode]/[EnWikiArticleName] to redirect to [langcode].wikipedia.org/wiki/[langWikiArticleName]</li>') | |
| self.response.out.write('<li>Ex:- http://interwikiredir.appspot.com/ta/Chennai redirects to Chennai article on Tamil wikipedia </li> ') | |
| self.response.out.write('<li>Powers tawp.in -- Tamil Wiki URL shortner </li></ul> ') | |
| self.response.out.write('<br/><br/><center>Contact : <a href="http://twitter.com/logic">@logic</a> OR <a href="http://en.wikipedia.org/wiki/User:Logicwiki">en:User:Logicwiki</a></center> ') | |
| self.response.out.write('</body></html>') | |
| class EnToLangInterWiki(webapp.RequestHandler): | |
| def get(self,langcode,article): | |
| url = 'http://en.wikipedia.org/wiki/' + article | |
| request = urllib2.Request(url) | |
| request.add_header('User-Agent','Srikanth Logic 1.0') | |
| opener = urllib2.build_opener() | |
| error_page = 'http://' + langcode + '.wikipedia.org/wiki/ARTICLEDOESNOTEXIST' | |
| try: | |
| soup = BeautifulSoup(opener.open(request).read()) | |
| except: | |
| self.redirect(error_page) | |
| return | |
| interwiki = "interwiki-" + langcode | |
| interwikiFA = interwiki + " FA" | |
| interwikiGA = interwiki + " GA" | |
| t = soup.find('li',attrs={"class":interwiki}) | |
| if (t == None): | |
| t = soup.find('li',attrs={"class":interwikiFA}) | |
| if (t == None): | |
| t = soup.find('li',attrs={"class":interwikiGA}) | |
| if (t != None): | |
| self.redirect(t.a['href']) | |
| else: | |
| self.redirect(error_page) | |
| class EnToTaInterWiki(webapp.RequestHandler): | |
| def get(self,article): | |
| url = 'http://en.wikipedia.org/wiki/' + article | |
| request = urllib2.Request(url) | |
| request.add_header('User-Agent','Srikanth Logic 1.0') | |
| opener = urllib2.build_opener() | |
| try: | |
| soup = BeautifulSoup(opener.open(request).read()) | |
| except: | |
| self.redirect('http://defn.me/r/ta/articledoesnotexist') | |
| return | |
| interwiki = "interwiki-ta" | |
| interwikiFA = interwiki + " FA" | |
| interwikiGA = interwiki + " GA" | |
| t = soup.find('li',attrs={"class":interwiki}) | |
| if (t == None): | |
| t = soup.find('li',attrs={"class":interwikiFA}) | |
| if (t == None): | |
| t = soup.find('li',attrs={"class":interwikiGA}) | |
| if (t != None): | |
| self.redirect(t.a['href']) | |
| else: | |
| self.redirect('http://defn.me/r/ta/articledoesnotexist') | |
| application = webapp.WSGIApplication([ | |
| ('/', MainPage),('/tawp/(.*)',EnToTaInterWiki),('/(.*)/(.*)',EnToLangInterWiki) | |
| ], debug=True) | |
| def main(): | |
| wsgiref.handlers.CGIHandler().run(application) | |
| if __name__ == '__main__': | |
| main() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment