Avancerad_CPP/Lab6/pstream.cpp

//## begin module.cm preserve=no

//	  %X% %Q% %Z% %W%

//## end module.cm



//## begin module.cp preserve=no

//## end module.cp



//## Module: PStream; Pseudo Package body

//## Subsystem: Figures

//## Source file: PStream.cpp



//## begin module.additionalIncludes preserve=no

//## end module.additionalIncludes



//## begin module.includes preserve=yes

//## end module.includes



// PStream

#include "PStream.h"

//## begin module.additionalDeclarations preserve=yes

#include "prsstent.h"



//## end module.additionalDeclarations





// Class PStream 









PStream::PStream()

  //## begin PStream::PStream%.hasinit preserve=no

      : saving(false)

  //## end PStream::PStream%.hasinit

  //## begin PStream::PStream%.initialization preserve=yes

  //## end PStream::PStream%.initialization

{

  //## begin PStream::PStream%.body preserve=yes

	for(int i=0 ; i<RESTORE_SIZE ; i++)

		restore[i] = NULL;

	//## end PStream::PStream%.body

}





PStream::~PStream()

{

  //## begin PStream::~PStream%.body preserve=yes

  //## end PStream::~PStream%.body

}







//## Other Operations (implementation)

void PStream::load (char* filename)

{

  //## begin PStream::load%940866982.body preserve=yes

	open(filename, ios::in);

	saving=false;

  //## end PStream::load%940866982.body

}



void PStream::save (char* filename)

{

  //## begin PStream::save%940866983.body preserve=yes

	open(filename, ios::out|ios::trunc);

	saving=true;

  //## end PStream::save%940866983.body

}



void PStream::close ()

{

  //## begin PStream::close%940866984.body preserve=yes

	if(isSaving()) {

		(*this) << 0;

		fstream::close();

	}

	saving=false;

  //## end PStream::close%940866984.body

}



bool PStream::isSaving ()

{

  //## begin PStream::isSaving%940866985.body preserve=yes

	return saving;

  //## end PStream::isSaving%940866985.body

}



void PStream::archive (Persistent*& x)

{

  //## begin PStream::archive%940866986.body preserve=yes



	// Let's save some data... 

	if(saving){ 

		 

		if(x==0){ 

			(*this) << "0" << endl; 

			return; 

		} 

		 

		int n = find(x); 

		if(n) 

			(*this) << n << endl; 

		else{ 

			n = add(x); 

			(*this) << n << endl << x->name() << endl; 

			x->archive(*this); 

		} 

	} 

	 

	// Let's load some data 

	else{ 

		int n; 

		(*this) >> n; 

		if(n==0){ 

			x=0; 

			return;		 

		} 

	 

		x = find(n); 

		if(x == 0) 

		{ 

			Str name; 

			(*this) >> name; 

			 

			x = Persistent::clone1(name.getStr()); 

			 

			if(x==0){ 

				clear(ios::failbit); 

				return;		 

			} 

 

			add(n, x); 

			x->archive(*this); 

		} 

	} 



  //## end PStream::archive%940866986.body

}



Persistent* PStream::find (int x) const

{

  //## begin PStream::find%940866987.body preserve=yes

	if(x>=0 && x<RESTORE_SIZE)

		return restore[x];

	else

		return (Persistent*) 0;

  //## end PStream::find%940866987.body

}



void PStream::add (int pos, Persistent* data)

{

  //## begin PStream::add%940866988.body preserve=yes

	restore[pos]=data;

  //## end PStream::add%940866988.body

}



int PStream::find (const Persistent* p) const

{

  //## begin PStream::find%940866989.body preserve=yes

	PsMap* tmp = (PsMap*)&psMap;

	if(tmp->exist((Persistent*)p))

		return tmp->find((Persistent*) p);

	return 0;

  //## end PStream::find%940866989.body

}



int PStream::add (const Persistent* data)

{

  //## begin PStream::add%940866990.body preserve=yes

	int size=psMap.getSize()+1;

	PsMap* tmp = (PsMap*)&psMap;

	tmp->add((Persistent*)data, size);

	return size;

  //## end PStream::add%940866990.body

}



// Additional Declarations

  //## begin PStream.declarations preserve=yes

  //## end PStream.declarations







//## begin module.epilog preserve=yes

//## end module.epilog