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First commit 31/01/1996

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José David Guillén
2021-09-03 17:42:38 +02:00
commit 66e1ded75d
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/**************************************************************************\
| |
| Clase para el tratamiento de Bases de Datos |
| |
| Jos<6F> David Guill<6C>n 1996 (c) |
| |
| |
\**************************************************************************/
#if !defined(__BDatos_HH)
#define __BDatos_HH
#include <stdio.h>
#define OK 0
#define ERROR 1
#define NO_ENC -1
#define ARRIBA 1
#define ABAJO 0
#if !defined(__BDatos_CPP)
#ifdef __cplusplus
extern "C" {
#endif
#endif
typedef struct
{
char ProgName[15]; // Estos datos se comprueban al abrir la base
char VerHi, VerLow; // para saber si es la adecuada para su progr.
char Other[200];
} YourHeader;
typedef struct
{
char NBD[13];
char Eof_Code;
char VerHi, VerLow;
YourHeader MyHeader;
long NRegistros;
long NRegTotal;
long SizeReg;
} Header;
class BDatos {
public:
char lError;
char cError[80];
YourHeader MyHeader;
void ObtenError(int code); // Obtiene el error "code"
long Registros(void); // N<> de registros
long NRegTotal(void); // N<> de registros
long RegActual(void); // Reg. Actual
BDatos(); // Constructor de Clase
~BDatos(); // Destructor de Clase
int AbrirReg( char *file, long sizereg ); // Abre el Fichero
void CerrarReg( void ); // Cierra el Fich.
int EscribeReg( void *dato, long pos ); // Escribe un Dato
int LeeReg( void *dato, long pos ); // Lee un Dato
int InsReg( void *dato, long pos, char ab ); // Inserta un Reg en pos.
int DelReg( long pos ); // Borra un Reg de pos.
int ShortReg(void); // Corta el fich. y lo hace mas peque<75>o
// Ordena la Base
int SortReg( int (*fcmp)(const void *, const void *) );
// Busca un registro en una base ordenada
int BuscReg( long PosIni, int (*fcmp)(const void *, const void *) );
private:
// Funcion auxiliar de ordenaci<63>n
int SortRegInt( long k, long n, int (*fcmp)(const void *, const void *));
FILE *handle_BDatos; // Handle a la Base
Header BDatosHeader;
long NRegActual;
char filename[80];
char rError;
};
#if !defined(__BDatos_CPP)
#ifdef __cplusplus
}
#endif
#endif
#endif
/*
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INS (2_3)
(si existen archivos borrados: " (TotalRecords+1) mark * " coge su posicion )
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*/