Do not process an empty event file.

The processing for empty event files is skipped. The file is simply written out empty again.

Do not process an empty event file.
The processing for empty event files is skipped. The file is simply written out empty again.
Jürgen Knödlseder
1 parent 90a9bcb5
Showing 1 changed file with 11 additions and 1 deletions
src/ctselect/ctselect.cpp
@@ -268,6 +268,16 @@ void ctselect::run(void)
             // Save event file name (for possible saving)
             m_infiles[i] = obs->eventfile();
+            // Fall through in case that the event file is empty
+            if (obs->events()->size() == 0) {
+                if (logTerse()) {
+                    log << " Warning: No events in event file \"";
+                    log << m_infiles[i] << "\". Event selection skipped.";
+                    log << std::endl;
+                }
+                continue;
+            }
+
             // Get temporary file name
             #if G_USE_MKSTEMP
             char tpl[]  = "ctselectXXXXXX";
@@ -837,7 +847,7 @@ void ctselect::select_events(GCTAObservation* obs, const std::string&amp; filename)
     int nevents = file.table("EVENTS")->nrows();
     // If the selected event list is empty or if removal of all events
-    // has been requesten then append an empty event list to the observation.
+    // has been requested then append an empty event list to the observation.
     if ((nevents < 1) || (remove_all)) {
         // Create empty event list