From 033be4dea90c5a446eb2b7c4f632b00f9fe9a40e Mon Sep 17 00:00:00 2001
From: jchudoba <jchudoba@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Mon, 24 Feb 2003 15:33:10 +0000
Subject: [PATCH] Changes needed in the case that the serial event number in a
 file does not start with 0. (Thomas Kuhr)

---
 STEER/AliStream.cxx | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/STEER/AliStream.cxx b/STEER/AliStream.cxx
index 7d802ce91ac..1e328916022 100644
--- a/STEER/AliStream.cxx
+++ b/STEER/AliStream.cxx
@@ -127,7 +127,16 @@ Bool_t AliStream::NextEventInStream(Int_t &serialNr)
   if (fLastEventSerialNr+1 >= fEvents) {
     if (!OpenNextFile()) return kFALSE;
   }
-  serialNr = ++fLastEventSerialNr;
+
+  fLastEventSerialNr++;
+// in some cases the serial number does not start from 0, find the 
+// number of the next event
+  char name[20];
+  sprintf(name, "TreeS%d", ++fLastEventNr);
+  while (!fCurrentFile->Get(name) && fLastEventNr < fEvents)
+    sprintf(name, "TreeS%d", ++fLastEventNr);
+  serialNr = fLastEventNr;
+  
   return kTRUE;
 }
 
@@ -183,6 +192,7 @@ Bool_t AliStream::OpenNextFile()
   }
   fEvents = static_cast<Int_t>(te->GetEntries());
   fLastEventSerialNr = -1;
+  fLastEventNr = -1;
   return kTRUE;
 }
 
-- 
2.39.3