old_contents: # Copyright (c) 2012 Roberto Alsina y otros.
  
  # Permission is hereby granted, free of charge, to any
  # person obtaining a copy of this software and associated
  # documentation files (the "Software"), to deal in the
  # Software without restriction, including without limitation
  # the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the
  # Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice
  # shall be included in all copies or substantial portions of
  # the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  # PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
  # OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  from __future__ import print_function
  from ast import literal_eval
  from datetime import datetime
  import os
  import subprocess
  
  
  from nikola.plugin_categories import Command
  
  
  class Deploy(Command):
      """Deploy site.  """
      name = "deploy"
  
      doc_usage = ""
      doc_purpose = "Deploy the site."
  
      def _execute(self, command, args):
          for command in self.site.config['DEPLOY_COMMANDS']:
  
              # Get last succesful deploy date
              timestamp_path = os.path.join(self.site.config['CACHE_FOLDER'], 'lastdeploy')
              try:
                  with open(timestamp_path, 'rb') as inf:
                      last_deploy = literal_eval(inf.read().strip())
              except Exception:
                  last_deploy = datetime(1970, 1, 1)  # NOQA
  
              print("==>", command)
              ret = subprocess.check_call(command, shell=True)
              if ret == 0:  # successful deployment
                  print("Successful deployment")
                  new_deploy = datetime.now()
                  # Store timestamp of successful deployment
                  with open(timestamp_path, 'wb+') as outf:
                      outf.write(repr(new_deploy))
                  # Here is where we would do things with whatever is
                  # on self.site.timeline and is newer than
                  # last_deploy
              else:
                  print("Unsuccessful deployment")
  
new_contents: # Copyright (c) 2012 Roberto Alsina y otros.
  
  # Permission is hereby granted, free of charge, to any
  # person obtaining a copy of this software and associated
  # documentation files (the "Software"), to deal in the
  # Software without restriction, including without limitation
  # the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the
  # Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice
  # shall be included in all copies or substantial portions of
  # the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  # PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
  # OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  from __future__ import print_function
  from ast import literal_eval
  import codecs
  from datetime import datetime
  import os
  import subprocess
  
  
  from nikola.plugin_categories import Command
  
  
  class Deploy(Command):
      """Deploy site.  """
      name = "deploy"
  
      doc_usage = ""
      doc_purpose = "Deploy the site."
  
      def _execute(self, command, args):
          for command in self.site.config['DEPLOY_COMMANDS']:
  
              # Get last succesful deploy date
              timestamp_path = os.path.join(self.site.config['CACHE_FOLDER'], 'lastdeploy')
              try:
                  with open(timestamp_path, 'rb') as inf:
                      last_deploy = literal_eval(inf.read().strip())
              except Exception:
                  last_deploy = datetime(1970, 1, 1)  # NOQA
  
              print("==>", command)
              ret = subprocess.check_call(command, shell=True)
              if ret != 0:  # failed deployment
                  raise Exception("Failed deployment")
          print("Successful deployment")
          new_deploy = datetime.now()
          # Store timestamp of successful deployment
          with codecs.open(timestamp_path, 'wb+', 'utf8') as outf:
              outf.write(repr(new_deploy))
          # Here is where we would do things with whatever is
          # on self.site.timeline and is newer than
          # last_deploy
  
subject: fix some deployment logic