From 021762ed3b44c556ddb148024838cedbf5877b78 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Thu, 1 Sep 2022 18:15:46 +0200
Subject: [PATCH] wait #4209 @3

---
 src/Files/Files.php | 39 +++++++++++++++++----------------------
 1 file changed, 17 insertions(+), 22 deletions(-)

diff --git a/src/Files/Files.php b/src/Files/Files.php
index 87a0f5c..616ece0 100644
--- a/src/Files/Files.php
+++ b/src/Files/Files.php
@@ -1,6 +1,9 @@
 <?php
 
 namespace Cubist\Util\Files;
+
+use Cubist\Util\CommandLine;
+
 class Files
 {
 
@@ -278,31 +281,23 @@ class Files
         return tempnam($dir, $prefix);
     }
 
-    public static function dirmtime($dir, $recursive = false)
+    public static function dirmtime($dir, $recursive = false, $extensions = [])
     {
-        $time = filemtime($dir);
-        $files = self::getDirectoryIterator($dir, $recursive);
-        foreach ($files as $f) {
-            $time = max($time, $f->getMTime());
+        $cmd = 'find ' . $dir . ' ';
+        if (!$recursive) {
+            $cmd .= '-maxdepth 1 -mindepth 1 ';
         }
-        return $time;
-    }
-
-    public static function checkHashDir($dir)
-    {
-        $nb = 0;
-        $time = 0;
-        $size = 0;
-
-        $files = self::getDirectoryIterator($dir, true);
-
-        foreach ($files as $f) {
-            $time = max($time, $f->getMTime());
-            $nb++;
-            $size += $f->getSize();
+        $cmd .= '-type f ';
+        if (count($extensions)) {
+            $cmd .= '\( ';
+            $exts = [];
+            foreach ($extensions as $extension) {
+                $exts[] = '-name "*.' . $extension . '"';
+            }
+            $cmd .= implode(' -o ', $exts) . ' \) ';
         }
-
-        return hash('sha256', $dir . '$$' . $nb . '//' . $size . '|||' . $time);
+        $cmd .= '-type f -printf "%T@ %p\n" | sort -n | cut -d\' \' -f 2- | tail -n 1';
+        return filemtime(trim(`$cmd`));
     }
 
     /**
-- 
2.39.5