old_contents: # (c) 2012-2014, Ansible, Inc
  #
  # This file is part of Ansible
  #
  # Ansible is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # Ansible is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
  
  from __future__ import (absolute_import, division, print_function)
  __metaclass__ = type
  
  import os
  
  from ansible.plugins.callback import CallbackBase
  from ansible.utils.path import makedirs_safe
  from ansible.utils.unicode import to_bytes
  from ansible.constants import TREE_DIR
  
  
  class CallbackModule(CallbackBase):
      '''
      This callback puts results into a host specific file in a directory in json format.
      '''
  
      CALLBACK_VERSION = 2.0
      CALLBACK_TYPE = 'aggregate'
      CALLBACK_NAME = 'tree'
      CALLBACK_NEEDS_WHITELIST = True
  
      def __init__(self):
          super(CallbackModule, self).__init__()
  
          self.tree = TREE_DIR
          if not self.tree:
              self.tree = os.path.expanduser("~/.ansible/tree")
              self._display.warning("The tree callback is defaulting to ~/.ansible/tree, as an invalid directory was provided: %s" % self.tree)
  
      def write_tree_file(self, hostname, buf):
          ''' write something into treedir/hostname '''
  
          buf = to_bytes(buf)
          try:
              makedirs_safe(self.tree)
              path = os.path.join(self.tree, hostname)
              with open(path, 'wb+') as fd:
                  fd.write(buf)
          except (OSError, IOError) as e:
              self._display.warning("Unable to write to %s's file: %s" % (hostname, str(e)))
  
      def result_to_tree(self, result):
          if self.tree:
              self.write_tree_file(result._host.get_name(), self._dump_results(result._result))
  
      def v2_runner_on_ok(self, result):
          self.result_to_tree(result)
  
      def v2_runner_on_failed(self, result, ignore_errors=False:
          self.result_to_tree(result)
  
      def v2_runner_on_unreachable(self, result):
          self.result_to_tree(result)
  
  
new_contents: # (c) 2012-2014, Ansible, Inc
  #
  # This file is part of Ansible
  #
  # Ansible is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # Ansible is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
  
  from __future__ import (absolute_import, division, print_function)
  __metaclass__ = type
  
  import os
  
  from ansible.plugins.callback import CallbackBase
  from ansible.utils.path import makedirs_safe
  from ansible.utils.unicode import to_bytes
  from ansible.constants import TREE_DIR
  
  
  class CallbackModule(CallbackBase):
      '''
      This callback puts results into a host specific file in a directory in json format.
      '''
  
      CALLBACK_VERSION = 2.0
      CALLBACK_TYPE = 'aggregate'
      CALLBACK_NAME = 'tree'
      CALLBACK_NEEDS_WHITELIST = True
  
      def __init__(self):
          super(CallbackModule, self).__init__()
  
          self.tree = TREE_DIR
          if not self.tree:
              self.tree = os.path.expanduser("~/.ansible/tree")
              self._display.warning("The tree callback is defaulting to ~/.ansible/tree, as an invalid directory was provided: %s" % self.tree)
  
      def write_tree_file(self, hostname, buf):
          ''' write something into treedir/hostname '''
  
          buf = to_bytes(buf)
          try:
              makedirs_safe(self.tree)
              path = os.path.join(self.tree, hostname)
              with open(path, 'wb+') as fd:
                  fd.write(buf)
          except (OSError, IOError) as e:
              self._display.warning("Unable to write to %s's file: %s" % (hostname, str(e)))
  
      def result_to_tree(self, result):
          if self.tree:
              self.write_tree_file(result._host.get_name(), self._dump_results(result._result))
  
      def v2_runner_on_ok(self, result):
          self.result_to_tree(result)
  
      def v2_runner_on_failed(self, result, ignore_errors=False):
          self.result_to_tree(result)
  
      def v2_runner_on_unreachable(self, result):
          self.result_to_tree(result)
  
  
subject: fix typo