Add render function which does not escape html characters

src/library/export/trackexportworker.cpp

@@ -210,7 +210,7 @@ QString TrackExportWorker::applyPattern(
     m_context->insert(QStringLiteral("index"), QVariant(index));
     m_context->insert(QStringLiteral("dup"), QVariant(duplicateCounter));
 
-    QString newName = m_template->render(m_context);
+    QString newName = Formatter::renderNoEscape(m_template, *m_context);
 
     // remove the context stack so it is clean again
     m_context->pop();

src/util/formatter.cpp

@@ -1,9 +1,41 @@
 #include "util/formatter.h"
 
+#include <grantlee/context.h>
 #include <grantlee/engine.h>
+#include <grantlee/outputstream.h>
+#include <grantlee/template.h>
+
+#include <QSharedPointer>
+#include <QTextStream>
+
+class NoEscapeStream : public Grantlee::OutputStream {
+  public:
+    NoEscapeStream()
+            : Grantlee::OutputStream() {
+    }
+    NoEscapeStream(QTextStream* stream)
+            : Grantlee::OutputStream(stream) {
+    }
+    ~NoEscapeStream() override{};
+
+    QString escape(const QString& input) const override {
+        return input;
+    }
+    QSharedPointer<Grantlee::OutputStream> clone(QTextStream* stream) const override {
+        return QSharedPointer<NoEscapeStream>::create(stream);
+    }
+};
 
 Grantlee::Engine* Formatter::getEngine(QObject* parent) {
     auto engine = new Grantlee::Engine(parent);
     // register custom
     return engine;
 }
+
+QString Formatter::renderNoEscape(Grantlee::Template& tmpl, Grantlee::Context& context) {
+    auto rendered = QString();
+    auto stream = QTextStream(&rendered);
+    NoEscapeStream os(&stream);
+    tmpl->render(&os, &context);
+    return rendered;
+}

src/util/formatter.h

@@ -1,10 +1,16 @@
 #pragma once
 
 #include <grantlee/engine.h>
+#include <grantlee/template.h>
 
 #include <QObject>
+#include <QString>
 
 class Formatter {
   public:
     static Grantlee::Engine* getEngine(QObject* parent);
+    // render template without escaping html characters
+    static QString renderNoEscape(
+            Grantlee::Template& templ,
+            Grantlee::Context& context);
 };