From 29b656f14d8bb7622ff861208d26cf8eb018670d Mon Sep 17 00:00:00 2001
From: John Estabrook <jestabro@vyos.io>
Date: Tue, 25 Oct 2022 13:42:30 -0500
Subject: vyos.util: T4773: add camel_to_snake_case conversion

---
 python/vyos/util.py | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'python')

diff --git a/python/vyos/util.py b/python/vyos/util.py
index 461df9a6e..e4e2a44ec 100644
--- a/python/vyos/util.py
+++ b/python/vyos/util.py
@@ -1105,3 +1105,10 @@ def sysctl_write(name, value):
         call(f'sysctl -wq {name}={value}')
         return True
     return False
+
+# approach follows a discussion in:
+# https://stackoverflow.com/questions/1175208/elegant-python-function-to-convert-camelcase-to-snake-case
+def camel_to_snake_case(name: str) -> str:
+    pattern = r'\d+|[A-Z]?[a-z]+|\W|[A-Z]{2,}(?=[A-Z][a-z]|\d|\W|$)'
+    words = re.findall(pattern, name)
+    return '_'.join(map(str.lower, words))
-- 
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