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vendor/doctrine/migrations/lib/Doctrine/Migrations/Finder/RecursiveRegexFinder.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Migrations\Finder;
+
+use FilesystemIterator;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use RegexIterator;
+
+use function sprintf;
+
+use const DIRECTORY_SEPARATOR;
+
+/**
+ * The RecursiveRegexFinder class recursively searches the given directory for migrations.
+ */
+final class RecursiveRegexFinder extends Finder
+{
+    private string $pattern;
+
+    public function __construct(string|null $pattern = null)
+    {
+        $this->pattern = $pattern ?? sprintf(
+            '#^.+\\%s[^\\%s]+\\.php$#i',
+            DIRECTORY_SEPARATOR,
+            DIRECTORY_SEPARATOR,
+        );
+    }
+
+    /** @return string[] */
+    public function findMigrations(string $directory, string|null $namespace = null): array
+    {
+        $dir = $this->getRealPath($directory);
+
+        return $this->loadMigrations(
+            $this->getMatches($this->createIterator($dir)),
+            $namespace,
+        );
+    }
+
+    private function createIterator(string $dir): RegexIterator
+    {
+        return new RegexIterator(
+            new RecursiveIteratorIterator(
+                new RecursiveDirectoryIterator($dir, FilesystemIterator::SKIP_DOTS | FilesystemIterator::FOLLOW_SYMLINKS),
+                RecursiveIteratorIterator::LEAVES_ONLY,
+            ),
+            $this->getPattern(),
+            RegexIterator::GET_MATCH,
+        );
+    }
+
+    private function getPattern(): string
+    {
+        return $this->pattern;
+    }
+
+    /** @return string[] */
+    private function getMatches(RegexIterator $iteratorFilesMatch): array
+    {
+        $files = [];
+        foreach ($iteratorFilesMatch as $file) {
+            $files[] = $file[0];
+        }
+
+        return $files;
+    }
+}