From b51445c101fb2a508a36d91ea6df89b6e51307d8 Mon Sep 17 00:00:00 2001
From: mattpass <matt@helical-levity.com>
Date: Sat, 26 Jun 2021 22:41:42 +0100
Subject: [PATCH] File must have a text MIME type to be indexed

---
 lib/indexer.php | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/indexer.php b/lib/indexer.php
index 7785abf..2e19729 100644
--- a/lib/indexer.php
+++ b/lib/indexer.php
@@ -47,10 +47,20 @@ function phpGrep($path, $base) {
         if (is_dir($filePath)) {
             $ret .= phpGrep($filePath, $base);
         } else {
-            // Check if we should scan within this file, by only considering files that may contain functions & classes
+            // Check if we should scan within this file, by only considering files that may contain functions & classes...
+            // Must be in the indexableFileExts list
             if (false === in_array($filePathExt, $indexableFileExts)) {
                 continue;
             }
+            $finfo = "text";
+            // Must have a MIME type string starting with "text"
+            if (function_exists('finfo_open')) {
+                $finfoMIME = finfo_open(FILEINFO_MIME);
+                $finfo = finfo_file($finfoMIME, $filePath);
+            }
+            if (strpos($finfo, "text")) {
+                continue;
+            }
             // Check if file appears to be the same (same size and mtime), if so, continue as we'll assume it's not changed
             if (isset($prevIndexData['files'][$filePath]) &&
                 $prevIndexData['files'][$filePath]['size'] === stat($filePath)['size'] &&