NavKey.cxx

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// $Id: NavKey.cxx,v 1.6 2001/08/29 07:49:32 west Exp $
//
// NavKey
//
// Package: Nav (Navigational Model).

// 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 03/20000
//
// Concept:  Associated Key Value.                                    
//                                                                    
// Purpose:  A NavKey value can be associated with the objects of a   
//           NavSet allowing sorting, slicing and searching by value  
//           See Stroustrup: discriminating union.                    
//
//

#include <string.h>
#include <stdio.h>
#include "LeakChecker/Lea.h"
#include "Navigation/NavKey.h"
#include "MessageService/MsgService.h"

ClassImp(NavKey)

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

CVSID("$Id: NavKey.cxx,v 1.6 2001/08/29 07:49:32 west Exp $");

char NavKey::fValueStr[15]; 

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


//.....................................................................

Int_t NavKey::CompareValue(NavKey that) const {
//
//
//  Purpose:  Compare this NavKey with that NavKey
//
//  Arguments: 
//    that         in    The NavKey to be compared with.
//
//  Return:  this - that:-
//             =  1   this > that
//             =  0   this = that
//             = -1   this < that
//             = 999  that NavKey is not of same type.
//
//  Contact:   N. West
//
//  Specification:-
//  =============
//
//  o Compare two NavKeys.

//  Program Notes:-
//  =============

//  None.

  if ( ! CompareType(that) ) {
    
    MSG("Nav", Msg::kWarning) << "Cannot compare NavKeys:-" << endl
       << "   this:" << GetType()      << " " << GetValue()       << endl
       << "   that:" << that.GetType() << " " << that.GetValue()  << endl;

    return 999;
  }

  switch (fTag) {
    case kInt:
      return ( fInt > that.fInt ) ? 1 : ( fInt < that.fInt ) ? -1 : 0;
    case kFloat:
      return ( fFloat > that.fFloat ) ? 1 : 
                                     ( fFloat < that.fFloat) ? -1 : 0;    
    default:
      Int_t test = strcmp(fString, that.fString);
      return ( test > 0 ) ? 1 : ( test < 0 ) ? -1 : 0;
  }

}

//.....................................................................

string NavKey::GetType() const {
//
//
//  Purpose:  Return NavKey type as string.
//
//  Arguments: None.
//
//  Return:  NavKey type as string.  
//
//  Contact:   N. West
//
//  Specification:-
//  =============
//
//  o Return NavKey type as string.

//  Program Notes:-
//  =============

//  None.

  switch (fTag) {
    case kInt:   return "Int";
    case kFloat: return "Float";
    default:     return "String";
   }

}

//.....................................................................

string NavKey::GetValue() const {
//
//
//  Purpose:  Return NavKey value as string.
//
//  Arguments: None.
//
//  Return:  NavKey value as string.  
//
//  Contact:   N. West
//
//  Specification:-
//  =============
//
//  o Return NavKey value as string.

//  Program Notes:-
//  =============

//  None.

  switch (fTag) {
    case kInt:
      sprintf( fValueStr, "%ld", fInt);
      break;
    case kFloat:
      sprintf( fValueStr, "%g", fFloat );
      break;
   default:
      sprintf( fValueStr, "%s", fString);
      break;
  }

  return fValueStr;

}

//.....................................................................

NavKey::NavKey(const char* string) {
//
//
//  Purpose: Constructor for character string value.
//
//  Arguments: 
//    string       in    Initialising char string
//
//  Return:    n/a
//
//  Contact:   N. West
//
//  Specification:-
//  =============
//
//  o Construct NavKey from character string value.  If string too
//    long truncate it.

//  Program Notes:-
//  =============

//  None.

  LEA_CTOR   //Leak Checking

  strncpy( fString, string, kMaxStringSize );
  fString[kMaxStringSize-1] = '\0';
  fTag = kString;

  if ( strlen( string ) >= kMaxStringSize ) {
    MSG("Nav", Msg::kError) << "String "  << string 
       << " too long, truncated to " << fString << endl;
  }  
}

---