Updated to Drupal 8.5. Core Media not yet in use.

[yaffs-website] / vendor / symfony / http-foundation / File / MimeType / FileBinaryMimeTypeGuesser.php

diff --git a/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php b/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php
index f917a06d6ccbf421ffc8d98ae05a9dca8ce729c7..3c358104651b8e9dc3303a6ec6debb2fc1b8589e 100644 (file)
--- a/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php
+++ b/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php
@@ -24,8 +24,6 @@ class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface
     private $cmd;
 
     /**
-     * Constructor.
-     *
      * The $cmd pattern must contain a "%s" string that will be replaced
      * with the file name to guess.
      *
@@ -45,7 +43,21 @@ class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface
      */
     public static function isSupported()
     {
-        return '\\' !== DIRECTORY_SEPARATOR && function_exists('passthru') && function_exists('escapeshellarg');
+        static $supported = null;
+
+        if (null !== $supported) {
+            return $supported;
+        }
+
+        if ('\\' === DIRECTORY_SEPARATOR || !function_exists('passthru') || !function_exists('escapeshellarg')) {
+            return $supported = false;
+        }
+
+        ob_start();
+        passthru('command -v file', $exitStatus);
+        $binPath = trim(ob_get_clean());
+
+        return $supported = 0 === $exitStatus && '' !== $binPath;
     }
 
     /**