Move QStringRef and remains to Qt5Compat

Export some private functions from QUtf8 to resolve
undefined symbols in Qt5Compat after moving QStringRef.

Task-number: QTBUG-84437
Change-Id: I9046dcb14ed520d8868a511d79da6e721e26f72b
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

2 files changed, 4 insertions, 4 deletions

diff --git a/examples/widgets/tools/i18n/languagechooser.cpp b/examples/widgets/tools/i18n/languagechooser.cpp
index 51dfce915f..2f82fc678b 100644
--- a/examples/widgets/tools/i18n/languagechooser.cpp
+++ b/examples/widgets/tools/i18n/languagechooser.cpp
@@ -97,12 +97,12 @@ LanguageChooser::LanguageChooser(const QString &defaultLang, QWidget *parent)
     setWindowTitle("I18N");
 }
 
-bool LanguageChooser::languageMatch(const QString &lang, const QString &qmFile)
+bool LanguageChooser::languageMatch(QStringView lang, QStringView qmFile)
 {
     //qmFile: i18n_xx.qm
-    const QString prefix = "i18n_";
+    const QStringView prefix{ u"i18n_" };
     const int langTokenLength = 2; /*FIXME: is checking two chars enough?*/
-    return qmFile.midRef(qmFile.indexOf(prefix) + prefix.length(), langTokenLength) == lang.leftRef(langTokenLength);
+    return qmFile.mid(qmFile.indexOf(prefix) + prefix.length(), langTokenLength) == lang.left(langTokenLength);
 }
 
 bool LanguageChooser::eventFilter(QObject *object, QEvent *event)
diff --git a/examples/widgets/tools/i18n/languagechooser.h b/examples/widgets/tools/i18n/languagechooser.h
index 733cc50fd3..6193ab8756 100644
--- a/examples/widgets/tools/i18n/languagechooser.h
+++ b/examples/widgets/tools/i18n/languagechooser.h
@@ -83,7 +83,7 @@ private:
     static QStringList findQmFiles();
     static QString languageName(const QString &qmFile);
     static QColor colorForLanguage(const QString &language);
-    static bool languageMatch(const QString &lang, const QString &qmFile);
+    static bool languageMatch(QStringView lang, QStringView qmFile);
 
     QGroupBox *groupBox;
     QDialogButtonBox *buttonBox;