From 95e646fca72627acd41b2b4fb5add2210cbe5cfd Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@gmail.com>
Date: Tue, 4 Feb 2020 12:50:52 +0100
Subject: [PATCH] util: optimize the normal_path() common case

Speeds up Zeek startup by 2%.
---
 src/util.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/util.cc b/src/util.cc
index 37832d089d..b143d0a4ef 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -1612,6 +1612,15 @@ TEST_CASE("util normalize_path")
 
 string normalize_path(std::string_view path)
 	{
+	if ( path.find("/.") == std::string_view::npos &&
+	     path.find("//") == std::string_view::npos )
+		{
+		// no need to normalize anything
+		if ( path.size() > 1 && path.back() == '/' )
+			path.remove_suffix(1);
+		return std::string(path);
+		}
+
 	size_t n;
 	vector<std::string_view> final_components;
 	string new_path;