fixed crash when searching for Booksmarks

Author: Maux8

src/adapters/data_models/bookmarks_model/bookmarks_proxy_model.cpp

@@ -45,7 +45,7 @@ bool BookmarksProxyModel::lessThan(const QModelIndex& left,
 bool BookmarksProxyModel::filterAcceptsRow(
     int source_row, const QModelIndex& source_parent) const
 {
-    if(m_filterString.isEmpty())
+    if(m_filterString.isEmpty() || !m_filterScorer)
         return true;
 
     auto index = sourceModel()->index(source_row, 0, source_parent);
@@ -60,7 +60,10 @@ bool BookmarksProxyModel::filterAcceptsRow(
 
 void BookmarksProxyModel::setFilterString(QString newFilterString)
 {
+
     m_filterString = newFilterString;
+    auto input = string_utils::toUtf32(newFilterString);
+    m_filterScorer = std::make_unique<rapidfuzz::fuzz::CachedRatio<uint32_t>>(input);
     emit filterStringUpdated();
     invalidate();
 }

src/application/utility/string_utils.hpp

@@ -54,4 +54,17 @@ inline bool lexicographicallyLess(const QString& left, const QString& right)
     return left.toLower() < right.toLower();
 }
 
+// QString is utf-16 and needs to be utf-32 for rapidfuzz
+inline std::vector<uint32_t> toUtf32(const QString& str)
+{
+    std::vector<uint32_t> result;
+    result.reserve(str.size());
+
+    for (QChar ch : str) {
+        result.push_back(ch.unicode());
+    }
+
+    return result;
+}
+
 }  // namespace string_utils