Syntax checker for policy_templates.json

chrome/app/policy/PRESUBMIT.py

Index: chrome/app/policy/PRESUBMIT.py
diff --git a/chrome/app/policy/PRESUBMIT.py b/chrome/app/policy/PRESUBMIT.py
new file mode 100644
index 0000000000000000000000000000000000000000..5d4f42fae2c0b936714684187833aea90134b15f
--- /dev/null
+++ b/chrome/app/policy/PRESUBMIT.py
@@ -0,0 +1,38 @@
+# 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
+import traceback

[M-A Ruel, 2011/01/18 16:06:23]

pelase remove this import, it's not used.

[Jakob Kummerow, 2011/01/18 16:33:54]

Done.
(Leftover from an earlier version. Should've noticed that.)

+
+
+def _CommonChecks(input_api, output_api):
+  filename = 'policy_templates.json'
+  results = []
+  old_sys_path = sys.path
+  try:
+    sys.path = [input_api.PresubmitLocalPath()] + sys.path
+    for f in input_api.AffectedFiles():

[M-A Ruel, 2011/01/18 16:06:23]

nit: Sorry for the round-trips but what about changing the loop into something
more readable (IMHO)?

filepath = input_api.os_path.join(
    input_api.PresubmitLocalPath(), 'policy_templates.json')

if any(f for f in input_api.AffectedFiles()
       if f.AbsoluteLocalPath() == filepath):
  old_sys_path = sys.path
  try:
    sys.path = [input_api.PresubmitLocalPath()] + sys.path
    import syntax_check_policy_template_json
    if checker.Run([], filepath) > 0:
      return [output_api.PresubmitError('Syntax error(s) in file(s):',
[filepath]))
  finally:
    sys.path = old_sys_path
return []

[Jakob Kummerow, 2011/01/18 16:33:54]

No problem at all. I'm always happy to learn how to do things better.
SGTM. Done.

+      if (f.AbsoluteLocalPath() ==
+              input_api.os_path.join(input_api.PresubmitLocalPath(), filename)):
+        # Optimization: only load this when it's needed.
+        import syntax_check_policy_template_json
+        checker = syntax_check_policy_template_json.PolicyTemplateChecker()
+        result = checker.Run([], f.AbsoluteLocalPath())
+        if result > 0:
+          results.append(output_api.PresubmitError(
+              'Syntax error(s) in file:', [f]))
+  finally:
+    sys.path = old_sys_path
+  return results
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return _CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  return _CommonChecks(input_api, output_api)