Nav.cxx

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// $Id: Nav.cxx,v 1.6 2009/02/28 21:46:14 gmieg Exp $
//
// Nav
//
// Begin_Html<img src="../../pedestrians.gif" align=center>
// <a href="../source_warning.html">Warning for beginners</a>.<br>
// Also see <a href="../../root_crib/index.html">The ROOT Crib</a> and
// <a href="../index.html">The MINOS Class User Guide</a>End_Html
//
// N. West 10/99
//
// Purpose: Nav consists entirely of static data and member functions
//          used for package debugging.
// 
// General Remarks about Nav
// =========================
// 
// The Nav package is based on the premise that navigation between
// collections is generic so should be handled by generic code.  That
// code is the Nav package.  It consists of a small set of classes, one
// for each generic component in the physical data navigational model.
// 
// Current Implementation
// ======================
//
//  To be supplied.
//
// 

#include "MessageService/MsgService.h"
#include "Navigation/Nav.h"

#include <cctype>
#include <cstring>

//   Definition of static data members
//   *********************************

CVSID("$Id: Nav.cxx,v 1.6 2009/02/28 21:46:14 gmieg Exp $");

// File level static data (private)
static UInt_t fgDebugFlgs = 0; // Debug output flags

// Dummy class for use by Nav::GetName() in the discovery of the 
// encoding regime now that Nav itself isn't a class but a namespace
//    123456789012345678901
class NavEncodingRegimeTest { };

// Definition of member functions (alphabetical order)
// ***************************************************

UInt_t Nav::GetDebugFlags() { return fgDebugFlgs; }

// ********************************************************************

std::string Nav::GetName(const char* classTypeInfoName,
                         const char* templateName) {

//  Utility to convert name returned by typeid().name() into 
//  class name and thence, if required, the iterator class name.
//  
//  Arguments: 
//    classTypeInfoName   in   typeid().name() for class Xxx
//    templateName        in   Template name = Ttt
//
//  Return:    
//      class name    i.e.  Xxx        (if templateName = 0)
//      iterator name i.e.  Ttt<Xxx>   (     otherwise     )
//  

  static int encodingRegime = 0;

  // If the encoding regime isn't known, try to deduce it.
  if ( ! encodingRegime ) {
    const char* testName = typeid(NavEncodingRegimeTest).name();
    if ( strcmp(testName,"21NavEncodingRegimeTest") == 0 ) encodingRegime = 1;
    else { 
      MSG("Nav",Msg::kError) 
        << "Cannot deduce the type_info name encoding for: " 
        << testName << endl;
      encodingRegime = -1;
    }
  }

  if ( encodingRegime == 1 ) 
    while ( isdigit(*classTypeInfoName) ) ++classTypeInfoName;

  std::string name = classTypeInfoName;
  if ( templateName ) {
    std::string name2(templateName);
    name2 += "<" + name + ">";
    name = name2;
  }
  
  return name;

}

// ********************************************************************

void Nav::SetDebugFlags(const UInt_t dbgflgs) { fgDebugFlgs = dbgflgs; }

// ********************************************************************

void Nav::SetLogLevel(int level) {
  MsgService::Instance()->GetStream("Nav")->SetLogLevel(level);
}

// ********************************************************************

---