1 files changed, 23 insertions, 0 deletions
diff --git a/archiveview.cpp b/archiveview.cpp
index 27285c2..2f4c77c 100644
--- a/archiveview.cpp
+++ b/archiveview.cpp
@@ -595,6 +595,29 @@ bool ArchiveProxy::filterAcceptsRow(int sourceRow, const QModelIndex &sourcePare
     return model->matchRecursive(nameIdx, mFilter);
 }
 
+bool ArchiveProxy::lessThan(const QModelIndex &left, const QModelIndex &right) const{
+    QString l = left.data().toString();
+    QString r = right.data().toString();
+    QRegExp nrRex("( \\d+$)");
+    int lPos = nrRex.indexIn(l);
+    if(lPos != -1){
+        int lNum = nrRex.cap(0).toInt();
+        int rPos = nrRex.indexIn(r);
+        int rNum = -1;
+        if(rPos != -1){
+            rNum = nrRex.cap(0).toInt();
+        }
+        if(lNum > -1 && rNum > -1){
+            QString lNoNum = l.mid(0, lPos);
+            QString rNoNum = r.mid(0, rPos);
+            if(lNoNum == rNoNum){
+                return lNum < rNum;
+            }
+        }
+    }
+    return l < r;
+}
+
 ArchiveFilesProxy::ArchiveFilesProxy(QObject *parent) : QSortFilterProxyModel(parent) {}
 
 /* Mapping Editor Widget */