1 files changed, 38 insertions, 0 deletions
diff --git a/config/run-and-prefix.py b/config/run-and-prefix.py
new file mode 100644
index 0000000000..d78fceb7ff
--- /dev/null
+++ b/config/run-and-prefix.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+# 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 runs a process and prefixes its output with.
+# Usage: run-and-prefix.py prefix command arg0 argv1...
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+import os
+import subprocess
+import sys
+
+sys.stdout = os.fdopen(sys.stdout.fileno(), "wb", 0)
+sys.stderr = os.fdopen(sys.stderr.fileno(), "wb", 0)
+
+prefix = sys.argv[1].encode("utf-8")
+args = sys.argv[2:]
+
+p = subprocess.Popen(
+    args,
+    bufsize=0,
+    stdout=subprocess.PIPE,
+    stderr=subprocess.STDOUT,
+    stdin=sys.stdin.fileno(),
+    close_fds=False,
+)
+
+while True:
+    data = p.stdout.readline()
+
+    if data == b"":
+        break
+
+    sys.stdout.write(b"%s> %s" % (prefix, data))
+
+sys.exit(p.wait())