code: def fetch_svn(self, svn_uri, directory):
          
          if not command_successful("svn --version"):
              self.logger.error("ERROR: Do you have subversion installed?")
              return 1
          if os.path.exists(directory):
              self.logger.error("ERROR: Checkout directory exists - %s" \
                      % directory)
              return 1
          try:
              os.mkdir(directory)
          except OSError as err_msg:
              self.logger.error("ERROR: " + str(err_msg))
              return 1
          cwd = os.path.realpath(os.curdir)
          os.chdir(directory)
          self.logger.info("Doing subversion checkout for %s" % svn_uri)
          status, output = run_command("/usr/bin/svn co %s" % svn_uri)
          self.logger.info(output)
          os.chdir(cwd)
          self.logger.info("subversion checkout is in directory './%s'" \
                  % directory)
          return 0
docs: Fetch subversion repository
  
          @param svn_uri: subversion repository uri to check out
          @type svn_uri: string
  
          @param directory: directory to download to
          @type directory: string
  
          @returns: 0 = success or 1 for failed download