1 files changed, 69 insertions, 0 deletions
diff --git a/config/check_js_msg_encoding.py b/config/check_js_msg_encoding.py
new file mode 100644
index 0000000000..6543405f90
--- /dev/null
+++ b/config/check_js_msg_encoding.py
@@ -0,0 +1,69 @@
+# vim: set ts=8 sts=4 et sw=4 tw=99:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# ----------------------------------------------------------------------------
+# This script checks encoding of the files that define JSErrorFormatStrings.
+#
+# JSErrorFormatString.format member should be in ASCII encoding.
+# ----------------------------------------------------------------------------
+
+import os
+import sys
+
+from mozversioncontrol import get_repository_from_env
+
+scriptname = os.path.basename(__file__)
+expected_encoding = "ascii"
+
+# The following files don't define JSErrorFormatString.
+ignore_files = [
+    "dom/base/domerr.msg",
+    "js/xpconnect/src/xpc.msg",
+]
+
+
+def log_pass(filename, text):
+    print("TEST-PASS | {} | {} | {}".format(scriptname, filename, text))
+
+
+def log_fail(filename, text):
+    print("TEST-UNEXPECTED-FAIL | {} | {} | {}".format(scriptname, filename, text))
+
+
+def check_single_file(filename):
+    with open(filename, "rb") as f:
+        data = f.read()
+        try:
+            data.decode(expected_encoding)
+        except Exception:
+            log_fail(filename, "not in {} encoding".format(expected_encoding))
+
+    log_pass(filename, "ok")
+    return True
+
+
+def check_files():
+    result = True
+
+    with get_repository_from_env() as repo:
+        root = repo.path
+
+        for filename, _ in repo.get_tracked_files_finder().find("**/*.msg"):
+            if filename not in ignore_files:
+                if not check_single_file(os.path.join(root, filename)):
+                    result = False
+
+    return result
+
+
+def main():
+    if not check_files():
+        sys.exit(1)
+
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()