From cc2cd72df82ba292fb27725cf12925a5be451db5 Mon Sep 17 00:00:00 2001
From: "Alexander \"Arav\" Andreev" <me@arav.su>
Date: Tue, 5 Sep 2023 05:58:29 +0400
Subject: [PATCH] A little optimisation of newPath() func.

---
 httpr.go | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/httpr.go b/httpr.go
index c201093..53dc41f 100644
--- a/httpr.go
+++ b/httpr.go
@@ -9,9 +9,14 @@ import (
 
 type path []string
 
-// newPath splits a path and ensures that it starts with a slash (/) and doesn't
-// have more than 1 catch-all parameter.
+// newPath ensures that a path provided is correct and splits it.
 func newPath(path string) (path, error) {
+	pathLen := len(path)
+
+	if pathLen == 0 {
+		return nil, errors.New("empty path is not allowed")
+	}
+
 	if path[0] != '/' {
 		return nil, errors.New("path should start with a slash symbol \"/\"")
 	}
@@ -20,6 +25,17 @@ func newPath(path string) (path, error) {
 		return nil, errors.New("path can have only one catch-all parameter \"*\"")
 	}
 
+	if path[pathLen-1] == '/' {
+		path = path[:pathLen-1]
+	}
+
+	parts := strings.Split(path, "/")
+
+	parts[0] = "/"
+
+	return parts, nil
+}
+
 	path = strings.ReplaceAll(path, "//", "/")
 
 	parts := strings.Split(strings.TrimSuffix(path, "/"), "/")