From 935e9aab72be5d7aee081ac6249cfdcf2fb9e7cd Mon Sep 17 00:00:00 2001
From: Martin Czygan <martin.czygan@gmail.com>
Date: Wed, 12 May 2021 21:42:15 +0200
Subject: sanitize: pre check before building suffix array

---
 skate/url.go | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/skate/url.go b/skate/url.go
index af4ac0c..92c9f61 100644
--- a/skate/url.go
+++ b/skate/url.go
@@ -19,14 +19,16 @@ var (
 // http://agingmind.utdallas.edu/facedb/view/neutral-faces.doi:10.3758/BF03206543.
 // http://10.3386/w20634https://doi.org/10.3386/w20634
 func SanitizeURL(s string) string {
-	var (
-		index   = suffixarray.New([]byte(s))
-		indices = index.Lookup([]byte("http"), -1)
-	)
-	if len(indices) > 1 {
-		s = s[0:indices[1]] // only use the first
-		s = strings.TrimRight(s, ":")
-		s = strings.TrimRight(s, ";")
+	if len(s) > 14 && strings.Contains(s[14:], "http") {
+		var (
+			index   = suffixarray.New([]byte(s))
+			indices = index.Lookup([]byte("http"), -1)
+		)
+		if len(indices) > 1 {
+			s = s[0:indices[1]] // only use the first
+			s = strings.TrimRight(s, ":")
+			s = strings.TrimRight(s, ";")
+		}
 	}
 	// http://!!!:
 	// http://!
-- 
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