Reconstruction/MdcPatRec/ProxyDict/include/ProxyDict/IfdStrKey.h

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#ifndef IFDSTRKEY_HH
#define IFDSTRKEY_HH
//--------------------------------------------------------------------------
// File and Version Information:
//    $Id: IfdStrKey.h,v 1.1.1.1 2005/04/21 01:18:05 zhangy Exp $
//
// Description:
//    IfdKeys based on string values.  Implementation is not in
//    terms of a string class, i.e., is in terms of char*, because
//    the package's usage is spreading and not everyone uses the
//    same standard String class.
//
// Author List:
//    Ed Frank                        University of Pennsylvania
//
// History:
//    Ed Frank      17 Nov 96         Creation of first version
//
// Copyright Information:
//      Copyright (C) 1997
//
// Bugs:
//
//------------------------------------------------------------------------
 
#include "ProxyDict/IfdKey.h"
#if !( defined( __GNUC__ ) && ( __GNUC__ < 3 ) &&                                             \
       ( __GNUC_MINOR__ < 95 ) ) // BABAR_IOSTREAMS_MIGRATION
#  include <iostream>
#else // BABAR_IOSTREAMS_MIGRATION
#  include <iostream.h>
#endif // BABAR_IOSTREAMS_MIGRATION
#include <stdlib.h>
#include <string.h>
#ifndef VXWORKS
#  include <string>
#endif
 
class IfdStrKey : public IfdKey {
public:
  enum { IFDKEY_BUFSIZE = 32 }; // See comments for _string
 
  IfdStrKey( const char* s );
#ifndef VXWORKS
  IfdStrKey( const std::string& s );
#endif
  virtual ~IfdStrKey();
 
  virtual int operator==( const IfdKey& k ) const;
  virtual int operator<( const IfdKey& k ) const;
  // colation as determined by strcmp.  Be careful.
 
  virtual IfdKey* clone( void ) const;
  // clone this key.  caller owns returned key.
 
  const char* asString( void ) const { return strVal; }
#if !( defined( __GNUC__ ) && ( __GNUC__ < 3 ) &&                                             \
       ( __GNUC_MINOR__ < 95 ) ) // BABAR_IOSTREAMS_MIGRATION
  virtual void print( std::ostream& o ) const;
#else  // BABAR_IOSTREAMS_MIGRATION
  virtual void print( ostream& o ) const;
#endif // BABAR_IOSTREAMS_MIGRATION
 
protected:
  //   virtual keyKind getKeyKind( void ) const { return strKey; }
 
private:
  IfdStrKey( const char* s, unsigned int hashVal );
  // Used for clone() to avoid cost of hash function.
 
  // Copy ctor and assignemnt op are not allowed.  This keeps
  // the class behavior like its base, IfdKey.  See that class for
  // more info.
  IfdStrKey( const IfdStrKey& );
  IfdStrKey& operator=( IfdStrKey& );
 
  // We allocate space for strings up to 32 bytes (including termination)
  // and, if a string longer than that is needed, we allocate on the heap.
  // The intention is to provide faster service for the most often used
  // cases, although at a penalty in size.
 
  char _stringBuf[IFDKEY_BUFSIZE];
  bool _onHeap;
};
 
#endif /*  IFDSTRKEY_HH */