From 4c5097701f5c67985a6aedd617fbfad7a8593868 Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Thu, 3 Dec 2020 12:39:47 +0100
Subject: [PATCH] Add wrapper around levenstein that crops strings to the max
 allowed length

---
 MD_STD.php | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/MD_STD.php b/MD_STD.php
index bb3838b..327be44 100644
--- a/MD_STD.php
+++ b/MD_STD.php
@@ -430,4 +430,22 @@ final class MD_STD {
         }
 
     }
+
+    /**
+     * Wrapper around levenshtein(), that only compares the first 250
+     * characters (levenshtein can't handle more than 255).
+     *
+     * @param string $str1 First string.
+     * @param string $str2 Second string.
+     *
+     * @return integer
+     */
+    public static function levenshtein(string $str1, string $str2):int {
+
+        if (\strlen($str1) > 250) $str1 = \substr($str1, 0, 250);
+        if (\strlen($str2) > 250) $str2 = \substr($str2, 0, 250);
+
+        return \levenshtein($str1, $str2);
+
+    }
 }