// Program name: cffolder.cpp
// Programmed by: Anthony Barbachan
// Programmed in: C++ (Turbo C++ 3.0 Compatable)
// Purpose: Source file for a cabinet file folder object.
// Version: 1.00
// Last modified on: 11/5/1998
// Version: 1.00a
// Last modified on: 11/29/1998
// Changes: Set status variable.
// Version: 1.00b
// Last modified on: 12/6/1998
// Changes: Modified error checking code to check for short reads as well.
// Version: 2.00
// Last modification date: 10-18-1999
// Changes: Replaced code with new classes' code.

#ifndef __CFFOLDER_CPP__
#define __CFFOLDER_CPP__

#include <fstream.h>
#include "cftypes.h"
#include "cfheader.h"
#include "cffolder.h"

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

Error cabinet_folder_fixed_header::read(istream& in)
{
	return (in.read((char *) this, sizeof(*this)).bad())
			? ((in.fail()) ? READ_ERROR : UNEXPECTED_EOF) : OK;
}

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

Error cabinet_folder_fixed_header::write(ostream& out)
{
	return (out.write((char *) this, sizeof(*this)).fail()) ? WRITE_ERROR : OK;
}

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

void cabinet_folder_header::init(cabinet_header& cab_header)
{
	clear();

	if(cab_header.has_reserved_area())			// If reserve present
	{
		if(cab_header.get_folder_ra_size())	// If folder reserve present
		{
			ra_size = cab_header.get_folder_ra_size();
			reserved_area = new byte[ra_size];
			memset(reserved_area, 0, ra_size);
		}
	}
}

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

Error cabinet_folder_header::read(istream& in, cabinet_header& cab_header)
{
	Error err = OK;

	clear();
	if((err = cabinet_folder_fixed_header::read(in)) != OK) return err;

	if(cab_header.has_reserved_area())			// If reserve present
	{
		if(cab_header.get_folder_ra_size())	// If folder reserve present
		{
			ra_size = cab_header.get_folder_ra_size();
			reserved_area = new byte[ra_size];

			if(in.read((char*)reserved_area, ra_size).bad())
			{
				return (in.fail()) ? READ_ERROR : UNEXPECTED_EOF;
			}
		}
	}

	return OK;
}

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

Error cabinet_folder_header::write(ostream& out)
{
	Error err = OK;

	if((err = cabinet_folder_fixed_header::write(out)) != OK) return err;

	if(ra_size)					// If reserved area present
	{
		if(out.write((char*)reserved_area, ra_size).fail()) { return WRITE_ERROR; }
	}

	return OK;
}

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

#endif