1 files changed, 34 insertions, 0 deletions
diff --git a/python/mozlint/mozlint/formatters/treeherder.py b/python/mozlint/mozlint/formatters/treeherder.py
new file mode 100644
index 0000000000..66c7c59eee
--- /dev/null
+++ b/python/mozlint/mozlint/formatters/treeherder.py
@@ -0,0 +1,34 @@
+# 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 attr
+
+from ..result import Issue
+
+
+class TreeherderFormatter(object):
+    """Formatter for treeherder friendly output.
+
+    This formatter looks ugly, but prints output such that
+    treeherder is able to highlight the errors and warnings.
+    This is a stop-gap until bug 1276486 is fixed.
+    """
+
+    fmt = "TEST-UNEXPECTED-{level} | {path}:{lineno}{column} | {message} ({rule})"
+
+    def __call__(self, result):
+        message = []
+        for path, errors in sorted(result.issues.items()):
+            for err in errors:
+                assert isinstance(err, Issue)
+
+                d = attr.asdict(err)
+                d["column"] = ":%s" % d["column"] if d["column"] else ""
+                d["level"] = d["level"].upper()
+                d["rule"] = d["rule"] or d["linter"]
+                message.append(self.fmt.format(**d))
+
+        if not message:
+            message.append("No lint issues found.")
+        return "\n".join(message)