Prefix phpstan-doctrine for MailPoetVendor

[MAILPOET-2945]

tasks/phpstan/prefix-phpstan-doctrine.php

@@ -0,0 +1,19 @@
+<?php
+
+// throw exception if anything fails
+set_error_handler(function ($severity, $message, $file, $line) {
+  throw new ErrorException($message, 0, $severity, $file, $line);
+});
+
+$iterator = new RecursiveDirectoryIterator(__DIR__ . '/vendor/phpstan/phpstan-doctrine', RecursiveDirectoryIterator::SKIP_DOTS);
+$files = new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::SELF_FIRST);
+foreach ($files as $file) {
+  if (substr($file, -4) === '.php' || substr($file, -5) === '.stub') {
+    $data = file_get_contents($file);
+
+    // when string 'Doctrine' is prefixed by a whitespace, ', ", or ( plus zero or more \, and suffixed by
+    // one or more \, prefix it with 'MailPoetDoctrine' + the number of trailing \ in the original string
+    $data = preg_replace('/([\'"\s(]\\\\*)(Doctrine)(\\\\+)/', '$1MailPoetVendor$3$2$3', $data);
+    file_put_contents($file, $data);
+  }
+}