A script that detects unmodified templates Ansible files and adds the ansible_managed commented out. Deals with XML files comment syntax by reading first line.

gistfile1.txt

#!/usr/bin/python
#A script that detects unmodified templates Ansible files and adds the ansible_managed commented
# out. Deals with XML files comment syntax by reading first line.

import fileinput
import os
import re


#Defining different headers as commenting syntax is different for XML

headers_text = '##### ANSIBLE INFO ######\n# {{ ansible_managed }}\n##  END ANSIBLE INFO  ##'
headers_xml = '<!-- - - - - - - - - ANSIBLE INFO - - - - - - - - - - - - - - - -->\n<!-- {{ ansible_managed }} -->\n<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->'

#First get files in templates directories
for root, dirs, files in os.walk("git_checkout_ansible_dir"):
  if re.search('templates',root):

    for file in files:
#Detect if the file already has been modified for Ansible
      f = open(str(root)+'/'+str(file),'r')
      if '{{ ansible_managed }}' not in open(str(root)+'/'+str(file)).read():
        f = open(str(root)+'/'+str(file),'r')
        for line in f:
#Deal with XML files by reading first line
#Yes this is ugly and should be done with something like ElementTree to validate the xml
          if line.startswith('<?xml version='):
            for line in fileinput.input(str(root) + '/' + str(file), inplace=True):
              if fileinput.lineno() == 2:
                print headers_xml
              print line,

#Now that XML files have been modified do the other ones (XML ones will already contain ANSIBLE INFO and will be filtered out
      f = open(str(root)+'/'+str(file),'r')
      if '{{ ansible_managed }}' not in open(str(root)+'/'+str(file)).read():
        for line in fileinput.input(str(root) + '/' + str(file), inplace=True):
          if fileinput.isfirstline():
            print headers_text
          print line,