working on todo.md features

src/export.cpp

@@ -182,6 +182,21 @@ ExportTable collect_export(ScopeModel& model, RowSet& rows) {
   return table;
 }
 
+ExportTable event_table(ScopeModel& model, const EventSnapshot& snapshot) {
+  ExportTable table;
+  table.time = snapshot.stamps;
+  table.abs_seconds = snapshot.abs_stamps.empty() ? snapshot.stamps : snapshot.abs_stamps;
+  std::lock_guard<std::mutex> lock(model.mutex());
+  const std::vector<ChannelInfo>& channels = model.channels();
+  for (std::size_t c = 0; c < snapshot.values.size() && c < channels.size(); ++c) {
+    ExportTable::Column column;
+    column.name = channels[c].name;
+    column.values = snapshot.values[c];
+    table.columns.push_back(std::move(column));
+  }
+  return table;
+}
+
 bool write_npy(const std::string& path, const ExportTable& table, std::string& error) {
   if (table.empty()) {
     error = "nothing to export: no signal is plotted in the visible range";