Added a policy writer for iOS Plists.

grit/format/policy_templates/writers/json_writer.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import json
+
 from textwrap import TextWrapper
 from grit.format.policy_templates.writers import template_writer
 
 
 TEMPLATE_HEADER="""\
 // Policy template for Linux.
 // Uncomment the policies you wish to activate and change their values to
 // something useful for your case. The provided values are for reference only
 // and do not provide meaningful defaults!
 {"""
@@ skipping 15 matching lines @@
   '''Class for generating policy files in JSON format (for Linux). The
   generated files will define all the supported policies with example values
   set for them. This class is used by PolicyTemplateGenerator to write .json
   files.
   '''
 
   def PreprocessPolicies(self, policy_list):
     return self.FlattenGroupsAndSortPolicies(policy_list)
 
   def WritePolicy(self, policy):
-    example_value = policy['example_value']
-    if policy['type'] == 'string':
-      example_value_str = '"' + example_value + '"'
-    elif policy['type'] in ('int', 'int-enum', 'dict'):
-      example_value_str = str(example_value)
-    elif policy['type'] == 'list':
-      if example_value == []:
-        example_value_str = '[]'
-      else:
-        example_value_str = '["%s"]' % '", "'.join(example_value)
-    elif policy['type'] == 'main':
-      if example_value == True:
-        example_value_str = 'true'
-      else:
-        example_value_str = 'false'
-    elif policy['type'] == 'string-enum':
-      example_value_str = '"%s"' % example_value;
-    elif policy['type'] == 'external':
+    if policy['type'] == 'external':
       # This type can only be set through cloud policy.
       return
-    else:
-      raise Exception('unknown policy type %s:' % policy['type'])
+    example_value_str = json.dumps(policy['example_value'], sort_keys=True)
 
     # Add comma to the end of the previous line.
     if not self._first_written:
       self._out[-2] += ','
 
     line = '  // %s' % policy['caption']
     self._out.append(line)
     self._out.append(HEADER_DELIMETER)
     description = self._text_wrapper.wrap(policy['desc'])
     self._out += description;
@@ skipping 16 matching lines @@
     self._first_written = True
     # Create the TextWrapper object once.
     self._text_wrapper = TextWrapper(
         initial_indent = '  // ',
         subsequent_indent = '  // ',
         break_long_words = False,
         width = 80)
 
   def GetTemplateText(self):
     return '\n'.join(self._out)