/*************************************************************************
 * * Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. *
 * *                                                                        *
 * * Author: The ALICE Off-line Project.                                    *
 * * Contributors are mentioned in the code where appropriate.              *
 * *                                                                        *
 * * Permission to use, copy, modify and distribute this software and its   *
 * * documentation strictly for non-commercial purposes is hereby granted   *
 * * without fee, provided that the above copyright notice appears in all   *
 * * copies and that both the copyright notice and this permission notice   *
 * * appear in the supporting documentation. The authors make no claims     *
 * * about the suitability of this software for any purpose. It is          *
 * * provided "as is" without express or implied warranty.                  *
 * **************************************************************************/

////////////////////////////////////////////////////////////////////////////
//                                                                        //
//  The SAX XML file handler used in the CDBManager                       //
//                                                                        //
//  Author:                                                               //
//    Chiara Zampolli (Chiara.Zampolli@cern.ch)                           //
//                                                                        //
////////////////////////////////////////////////////////////////////////////

#include <cstdlib>
#include <Riostream.h>

#include <TList.h>
#include <TObject.h>
#include <TXMLAttr.h>
#include <TSAXParser.h>

#include "AliLog.h"
#include "AliCDBHandler.h"

ClassImp(AliCDBHandler)

//_____________________________________________________________________________
AliCDBHandler::AliCDBHandler()
  :TObject(),
  fRun(-1),
  fStartRunRange(-1),
  fEndRunRange(-1),
  fOCDBFolder("")
{
  //
  // AliCDBHandler default constructor
  //
}

//_____________________________________________________________________________
AliCDBHandler::AliCDBHandler(Int_t run)
  :TObject(),
  fRun(run),
  fStartRunRange(-1),
  fEndRunRange(-1),
  fOCDBFolder("")
{
  //
  // AliCDBHandler constructor with requested run
  //
}

//_____________________________________________________________________________
  AliCDBHandler::AliCDBHandler(const AliCDBHandler &sh)
:TObject(sh),
  fRun(sh.fRun),
  fStartRunRange(sh.fStartRunRange),
  fEndRunRange(sh.fEndRunRange),
  fOCDBFolder(sh.fOCDBFolder)
{
  //
  // AliCDBHandler copy constructor
  //
}

//_____________________________________________________________________________
AliCDBHandler &AliCDBHandler::operator=(const AliCDBHandler &sh)
{
  //
  // Assignment operator
  //
  if (&sh == this) return *this;

  new (this) AliCDBHandler(sh);
  return *this;
}

//_____________________________________________________________________________
AliCDBHandler::~AliCDBHandler()
{
  //
  // AliCDBHandler destructor
  //	
}

//_____________________________________________________________________________
void AliCDBHandler::OnStartDocument()
{
  // if something should happen right at the beginning of the
  // XML document, this must happen here
  AliInfo("Reading XML file for LHCPeriod <-> Run Range correspondence");
}

//_____________________________________________________________________________
void AliCDBHandler::OnEndDocument()
{
  // if something should happen at the end of the XML document
  // this must be done here
}

//_____________________________________________________________________________
void AliCDBHandler::OnStartElement(const char *name, const TList *attributes)
{
  // when a new XML element is found, it is processed here

  // set the current system if necessary
  TString strName(name);
  AliDebug(2,Form("name = %s",strName.Data()));
  Int_t startRun=-1;
  Int_t endRun=-1;
  TXMLAttr* attr;
  TIter next(attributes);
  while ((attr = (TXMLAttr*) next())) {
    TString attrName = attr->GetName();
    AliDebug(2,Form("Name = %s",attrName.Data())); 
    if (attrName == "StartRunRange"){
      startRun = (Int_t)(((TString)(attr->GetValue())).Atoi());
      AliDebug(2,Form("startRun = %d",startRun));
    }
    if (attrName == "EndRunRange"){
      endRun = (Int_t)(((TString)(attr->GetValue())).Atoi());
      AliDebug(2,Form("endRun = %d",endRun));
    }				
    if (attrName == "OCDBFolder"){
      if (fRun>=startRun && fRun<=endRun && startRun!=-1 && endRun!=-1){
        fOCDBFolder = (TString)(attr->GetValue());
        AliDebug(2,Form("OCDBFolder = %s",fOCDBFolder.Data()));
        fStartRunRange = startRun;
        fEndRunRange = endRun;
      }
    }
  }	
  return;
}
//_____________________________________________________________________________
void AliCDBHandler::OnEndElement(const char *name)
{
  // do everything that needs to be done when an end tag of an element is found
  TString strName(name);
  AliDebug(2,Form("name = %s",strName.Data()));
}

//_____________________________________________________________________________
void AliCDBHandler::OnCharacters(const char *characters)
{
  // copy the text content of an XML element
  //fContent = characters;
  TString strCharacters(characters);
  AliDebug(2,Form("characters = %s",strCharacters.Data()));
}

//_____________________________________________________________________________
void AliCDBHandler::OnComment(const char* /*text*/)
{
  // comments within the XML file are ignored
}

//_____________________________________________________________________________
void AliCDBHandler::OnWarning(const char *text)
{
  // process warnings here
  AliInfo(Form("Warning: %s",text));
}

//_____________________________________________________________________________
void AliCDBHandler::OnError(const char *text)
{
  // process errors here
  AliError(Form("Error: %s",text));
}

//_____________________________________________________________________________
void AliCDBHandler::OnFatalError(const char *text)
{
  // process fatal errors here
  AliFatal(Form("Fatal error: %s",text));
}

//_____________________________________________________________________________
void AliCDBHandler::OnCdataBlock(const char* /*text*/, Int_t /*len*/)
{
  // process character data blocks here
  // not implemented and should not be used here
}