qt: Add API for ContentRating descriptions

qt/chelpers.h

@@ -41,6 +41,17 @@ inline QStringList valueWrap(gchar **strv)
     return res;
 }
 
+inline QStringList valueWrap(const gchar **strv)
+{
+    QStringList res;
+    if (strv == NULL)
+        return res;
+    for (uint i = 0; strv[i] != NULL; i++) {
+        res.append (QString::fromUtf8(strv[i]));
+    }
+    return res;
+}
+
 inline QStringList valueWrap(GPtrArray *array)
 {
     QStringList res;

qt/contentrating.cpp

@@ -121,9 +121,18 @@ void AppStream::ContentRating::setValue(const QString& id, AppStream::ContentRat
     as_content_rating_set_value(d->m_contentRating, qPrintable(id), (AsContentRatingValue) ratingValue);
 }
 
+QString AppStream::ContentRating::description(const QString& id) const
+{
+    return QString::fromUtf8(as_content_rating_attribute_get_description(qPrintable(id), as_content_rating_get_value(d->m_contentRating, qPrintable(id))));
+}
+
+QStringList AppStream::ContentRating::ratingIds() const
+{
+    return AppStream::valueWrap(as_content_rating_get_rating_ids(d->m_contentRating));
+}
+
 QDebug operator<<(QDebug s, const AppStream::ContentRating& contentRating)
 {
     s.nospace() << "AppStream::ContentRating(" << contentRating.kind() << contentRating.minimumAge() << ")";
     return s.space();
 }
-

qt/contentrating.h

@@ -70,6 +70,9 @@ class APPSTREAMQT_EXPORT ContentRating {
         RatingValue value(const QString& id) const;
         void setValue(const QString& id, RatingValue ratingValue);
 
+        QStringList ratingIds() const;
+        QString description(const QString& id) const;
+
     private:
         QSharedDataPointer<ContentRatingData> d;
 };