Running regular expressions with capture groups is expensive.
Bail out early if the line does not start with a '#'.
This reduces the runtime of the check by two thirds.
Signed-off-by: Ján Tomko <jtomko@xxxxxxxxxx>
---
scripts/prohibit-duplicate-header.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/scripts/prohibit-duplicate-header.py b/scripts/prohibit-duplicate-header.py
index dfdfa0bf0b..420311ccef 100644
--- a/scripts/prohibit-duplicate-header.py
+++ b/scripts/prohibit-duplicate-header.py
@@ -30,6 +30,10 @@ def check_file(filename):
for line in fh:
lineno = lineno + 1
+ # skip non-matching lines early
+ if line[0] != '#':
+ continue
+
headermatch = re.search(r'''^# *include *[<"]([^>"]*\.h)[">]''', line)
if headermatch is not None:
inc = headermatch.group(1)
--
2.19.2
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