From e2d0f140a713cbd91023e324321e57555b24bc18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hagen=20H=C3=BCbel?= <hhuebel@itinance.com>
Date: Fri, 16 Oct 2015 12:10:47 +0200
Subject: [PATCH] work-around to avoid too long file names

---
 xhprof_lib/utils/xhprof_runs.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/xhprof_lib/utils/xhprof_runs.php b/xhprof_lib/utils/xhprof_runs.php
index 2a22a5dc..6aa5bf7e 100644
--- a/xhprof_lib/utils/xhprof_runs.php
+++ b/xhprof_lib/utils/xhprof_runs.php
@@ -78,6 +78,15 @@ private function file_name($run_id, $type) {
 
     $file = "$run_id.$type." . $this->suffix;
 
+    // work-around to avoid too long file names
+    // inspired by https://github.com/simenbw
+    $maxLength = 255;
+    if (strlen($file) > $maxLength) {
+        $md5 = md5($file);
+        $suffixLength = strlen($this->suffix) + 1;
+        $file = substr_replace($file, $md5, $maxLength - (strlen($md5) + $suffixLength), -$suffixLength);
+    }
+
     if (!empty($this->dir)) {
       $file = $this->dir . "/" . $file;
     }