fblock.hpp

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#ifndef __FBLOCK_HPP__
#define __FBLOCK_HPP__

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/*/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\*/
/*
Copyright: 1996 - Grupo de Voz (DAET) ETSII/IT-Bilbao

Nombre fuente................ -
Nombre paquete............... -
Lenguaje fuente.............. C++ (Borland C/C++ 3.1)
Estado....................... desarrollo
Dependencia Hard/OS.......... -
Codigo condicional........... -

Codificacion................. Borja Etxebarria

Version  dd/mm/aa  Autor     Proposito de la edicion
-------  --------  --------  -----------------------
1.0.1    09/04/99  Borja     uso tipos UINT
0.0.0    15/07/96  Borja     codificacion inicial.

======================== Contenido ========================
===========================================================
*/
/*/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\*/
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#ifndef __cplusplus
#error Must use C++ compiler
#endif

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#include <stdio.h>
#include "tdef.h"

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#define FBLOCK_BP_IGNORE 0
#define FBLOCK_BP_BEFORE 1
#define FBLOCK_BP_AFTER 2
#define FBLOCK_BP_BOTH 4

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class FBlock {
    private:
        FILE* f;

        LONG bPos0;  // bytes delante del bloque
        LONG bTail;  // bytes detras del bloque
        LONG bPos;  // posicion actual
        LONG bTotSize;  // numero de bytes
        BOOL writeMode;  // TRUE si en modo Write
        UINT borderpolicy;  // b0->begin  b1->end
        BOOL stdinout; // TRUE si se esta en stdin o stdout;

        VOID setRW( BOOL write );

    public:
        FBlock( VOID );

        VOID attach( FILE* fBin, LONG N=-1, UINT borderpolicy=4 );

        VOID setPos( LONG pos );
        LONG getPos( VOID ) const { return (LONG)bPos; }
        LONG getN( VOID ) const {   return (LONG)bTotSize; }

        UINT get( BYTE& byte );
        UINT set( BYTE byte ) { return set(&byte,1); }
        UINT ins( BYTE byte ) { return ins(&byte,1); }
        UINT del( VOID ) { return del(1); }

        UINT get( BYTE* block, UINT len );
        UINT set( const BYTE* block, UINT len );
        UINT ins( const BYTE* block, UINT len );
        UINT del( UINT len );

        VOID toggleRW( VOID );

        BOOL OK ( VOID ) const;

        ~FBlock( VOID ) { f=0; }
};

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#endif

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