#!/usr/bin/env python

 #

 #       migreme.py

 #       

 #       Copyright 2009 Rafael G. Martins <rafael@rafaelmartins.eng.br>

 #       

 #       Redistribution and use in source and binary forms, with or without

 #       modification, are permitted provided that the following conditions are

 #       met:

 #       

 #       * Redistributions of source code must retain the above copyright

 #         notice, this list of conditions and the following disclaimer.

 #       * Redistributions in binary form must reproduce the above

 #         copyright notice, this list of conditions and the following disclaimer

 #         in the documentation and/or other materials provided with the

 #         distribution.

 #       * Neither the name of the Rafael G. Martins nor the names of its

 #         contributors may be used to endorse or promote products derived from

 #         this software without specific prior written permission.

 #       

 #       THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 #       "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 #       LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 #       A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 #       OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 #       SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 #       LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 #       DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 #       THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 #       (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 #       OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 from urllib2 import urlopen

 from xml.dom.minidom import parse as parseXml

 class MigremeError(Exception):

     pass

 def migreme(url):

     try:

         fp = urlopen('http://migre.me/api.xml?url=%s' % url)

         myxml = parseXml(fp)

         fp.close()

     except:

         raise MigremeError('Failed to contact migre.me')

     n_err = int(myxml.getElementsByTagName('error')[0].childNodes[0].data)

     if n_err != 0:

         error = myxml.getElementsByTagName('errormessage')[0].childNodes[0].data

         raise MigremeError('Error: %s' % error)

     return str(myxml.getElementsByTagName('migre')[0].childNodes[0].data)

 def main():

     from sys import argv, stderr

     if len(argv) == 2:

         try:

             print 'Shortened url:', migreme(argv[1])

         except MigremeError, error:

             print >> stderr, error

     else:

         print """

 Simple "Migre.Me" URL shortener

     Usage: %s <url>

 """ % argv[0]

 if __name__ == '__main__':

     main()