Add href at db-path-provider. (#13)

* Add href at db-path-provider.

* Quote special char

* Fix pattern for additional parameter

src/Provider/DatabasePathProvider.php

@@ -22,11 +22,11 @@
 use InspiredMinds\ContaoFileUsage\Result\ResultsCollection;
 
 /**
- * Searches the database for file references.
+ * Searches the database for file references in attributes href and src.
  */
 class DatabasePathProvider extends AbstractDatabaseProvider
 {
-    private string $pathPattern = '~src\s*=\s*"(__contao_upload_path__/.+?)"~';
+    private string $pathPattern = '~(href|src)\s*=\s*"(__contao_upload_path__/.+?)([?"])~';
 
     public function __construct(
         Connection $db,
@@ -35,7 +35,7 @@ public function __construct(
         string $uploadPath,
         array $ignoreTables,
     ) {
-        $this->pathPattern = str_replace('__contao_upload_path__', $uploadPath, $this->pathPattern);
+        $this->pathPattern = str_replace('__contao_upload_path__', preg_quote($uploadPath, '~'), $this->pathPattern);
 
         parent::__construct($db, $ignoreTables);
     }
@@ -85,7 +85,7 @@ private function findPathReferences(ResultsCollection $collection, string $table
             }
 
             if (preg_match_all($this->pathPattern, $data, $matches)) {
-                foreach ($matches[1] ?? [] as $path) {
+                foreach ($matches[2] ?? [] as $path) {
                     $file = FilesModel::findByPath(urldecode($path));
 
                     if (null === $file) {