Do not output HTML chars in translations escaped in CDATA to ensure consistentcy with crowdin XMLs

This should avoid some unnecessary diffs in the future

src/Translation/NoCDATAXliffFileDumper.php

@@ -0,0 +1,88 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2026 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\Translation;
+
+use DOMDocument;
+use DOMXPath;
+use Symfony\Component\DependencyInjection\Attribute\AsDecorator;
+use Symfony\Component\Translation\Dumper\FileDumper;
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * The goal of this class, is to ensure that the XLIFF dumper does not output CDATA, but instead outputs the text
+ * using the normal XML escaping. Crowdin outputs the translations without CDATA, we want to be consistent with that, to
+ * prevent unnecessary diffs in the translation files when we update them with translations from Crowdin.
+ */
+#[AsDecorator("translation.dumper.xliff")]
+class NoCDATAXliffFileDumper extends FileDumper
+{
+
+    public function __construct(private readonly FileDumper $decorated)
+    {
+
+    }
+
+    private function convertCDataToEscapedText(string $xmlContent): string
+    {
+        $dom = new DOMDocument();
+        // Preserve whitespace to keep Symfony's formatting intact
+        $dom->preserveWhiteSpace = true;
+        $dom->formatOutput = true;
+
+        // Load the XML (handle internal errors if necessary)
+        $dom->loadXML($xmlContent);
+
+        $xpath = new DOMXPath($dom);
+        // Find all CDATA sections
+        $cdataNodes = $xpath->query('//node()/comment()|//node()/text()|//node()') ;
+
+        // We specifically want CDATA sections. XPath 1.0 doesn't have a direct
+        // "cdata-section()" selector easily, so we iterate through all nodes
+        // and check their type.
+
+        $nodesToRemove = [];
+        foreach ($xpath->query('//text() | //*') as $node) {
+            foreach ($node->childNodes as $child) {
+                if ($child->nodeType === XML_CDATA_SECTION_NODE) {
+                    // Create a new text node with the content of the CDATA
+                    // DOMDocument will automatically escape special chars on save
+                    $newTextNode = $dom->createTextNode($child->textContent);
+                    $node->replaceChild($newTextNode, $child);
+                }
+            }
+        }
+
+        return $dom->saveXML();
+    }
+
+    public function formatCatalogue(MessageCatalogue $messages, string $domain, array $options = []): string
+    {
+        return $this->convertCDataToEscapedText($this->decorated->formatCatalogue($messages, $domain, $options));
+    }
+
+    protected function getExtension(): string
+    {
+        return $this->decorated->getExtension();
+    }
+}