1 files changed, 24 insertions, 0 deletions
diff --git a/taskcluster/taskgraph/util/treeherder.py b/taskcluster/taskgraph/util/treeherder.py
new file mode 100644
index 000000000..e66db582f
--- /dev/null
+++ b/taskcluster/taskgraph/util/treeherder.py
@@ -0,0 +1,24 @@
+# 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/.
+
+from __future__ import absolute_import, print_function, unicode_literals
+import re
+
+
+def split_symbol(treeherder_symbol):
+    """Split a symbol expressed as grp(sym) into its two parts.  If no group is
+    given, the returned group is '?'"""
+    groupSymbol = '?'
+    symbol = treeherder_symbol
+    if '(' in symbol:
+        groupSymbol, symbol = re.match(r'([^(]*)\(([^)]*)\)', symbol).groups()
+    return groupSymbol, symbol
+
+
+def join_symbol(group, symbol):
+    """Perform the reverse of split_symbol, combining the given group and
+    symbol.  If the group is '?', then it is omitted."""
+    if group == '?':
+        return symbol
+    return '{}({})'.format(group, symbol)