Syntax checker for policy_templates.json

chrome/app/policy/PRESUBMIT.py

+# Copyright (c) 2011 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.
+
+# If this presubmit check fails or misbehaves, please complain to
+# gfeher@chromium.org or jkummerow@chromium.org.
+
+import sys
+
+
+def _CommonChecks(input_api, output_api):
+  filepath = input_api.os_path.join(input_api.PresubmitLocalPath(),
+                                    'policy_templates.json')
+  if any(f.AbsoluteLocalPath() == filepath
+         for f in input_api.AffectedFiles()):
+    old_sys_path = sys.path
+    try:
+      sys.path = [input_api.PresubmitLocalPath()] + sys.path
+      # Optimization: only load this when it's needed.
+      import syntax_check_policy_template_json
+      checker = syntax_check_policy_template_json.PolicyTemplateChecker()
+      if checker.Run([], filepath) > 0:
+        return [output_api.PresubmitError('Syntax error(s) in file:',
+                                          [filepath])]
+    finally:
+      sys.path = old_sys_path
+  return []
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return _CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  return _CommonChecks(input_api, output_api)