The isPerfScriptFormat function, validates the format of a perf script.
The function checks if the given input meets specific criteria to
determine if it is a valid perf script output.

Signed-off-by: Anup Sharma <anupnewsmail@gmail.com>
---
 .../scripts/python/firefox-gecko-converter.py     | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 tools/perf/scripts/python/firefox-gecko-converter.py

diff --git a/tools/perf/scripts/python/firefox-gecko-converter.py b/tools/perf/scripts/python/firefox-gecko-converter.py
new file mode 100644
index 000000000000..73a431d0c7d1
--- /dev/null
+++ b/tools/perf/scripts/python/firefox-gecko-converter.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+import re
+import sys
+import json
+from functools import reduce
+
+def isPerfScriptFormat(profile):
+    if profile.startswith('# ========\n'):
+        return True
+
+    if profile.startswith('{'):
+        return False
+
+    firstLine = profile[:profile.index('\n')]
+    return bool(re.match(r'^\S.*?\s+(?:\d+/)?\d+\s+(?:\d+\d+\s+)?[\d.]+:', firstLine))
-- 
2.34.1