1 files changed, 46 insertions, 0 deletions
diff --git a/testing/mozbase/manifestparser/manifestparser/util.py b/testing/mozbase/manifestparser/manifestparser/util.py
new file mode 100644
index 0000000000..4830b39547
--- /dev/null
+++ b/testing/mozbase/manifestparser/manifestparser/util.py
@@ -0,0 +1,46 @@
+# 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/.
+
+import ast
+import os
+
+
+def normsep(path):
+    """
+    Normalize path separators, by using forward slashes instead of whatever
+    :py:const:`os.sep` is.
+    """
+    if os.sep != "/":
+        # Python 2 is happy to do things like byte_string.replace(u'foo',
+        # u'bar'), but not Python 3.
+        if isinstance(path, bytes):
+            path = path.replace(os.sep.encode("ascii"), b"/")
+        else:
+            path = path.replace(os.sep, "/")
+    if os.altsep and os.altsep != "/":
+        if isinstance(path, bytes):
+            path = path.replace(os.altsep.encode("ascii"), b"/")
+        else:
+            path = path.replace(os.altsep, "/")
+    return path
+
+
+def evaluate_list_from_string(list_string):
+    """
+    This is a utility function for converting a string obtained from a manifest
+    into a list. If the string is not a valid list when converted, an error will be
+    raised from `ast.eval_literal`. For example, you can convert entries like this
+    into a list:
+    ```
+        test_settings=
+            ["hello", "world"],
+            [1, 10, 100],
+        values=
+            5,
+            6,
+            7,
+            8,
+    ```
+    """
+    return ast.literal_eval("[" + "".join(list_string.strip(",").split("\n")) + "]")