root/gd/libgd/gd_io.h

INCLUDED FROM

#ifndef GD_IO_H
#define GD_IO_H 1

#include <stdio.h>

#ifdef VMS
#define Putchar gdPutchar
#endif

typedef struct gdIOCtx {
        int     (*getC)(struct gdIOCtx*);
        int     (*getBuf)(struct gdIOCtx*, void*, int);

        void    (*putC)(struct gdIOCtx*, int);
        int     (*putBuf)(struct gdIOCtx*, const void*, int);

        int     (*seek)(struct gdIOCtx*, const int);
        long    (*tell)(struct gdIOCtx*);

        void    (*gd_free)(struct gdIOCtx*);

        void    *data;
} gdIOCtx;

typedef struct gdIOCtx  *gdIOCtxPtr;

void Putword(int w, gdIOCtx *ctx);
void Putchar(int c, gdIOCtx *ctx);

void gdPutC(const unsigned char c, gdIOCtx *ctx);
int gdPutBuf(const void *, int, gdIOCtx*);
void gdPutWord(int w, gdIOCtx *ctx);
void gdPutInt(int w, gdIOCtx *ctx);

int gdGetC(gdIOCtx *ctx);
int gdGetBuf(void *, int, gdIOCtx*);
int gdGetByte(int *result, gdIOCtx *ctx);
int gdGetWord(int *result, gdIOCtx *ctx);
int gdGetInt(int *result, gdIOCtx *ctx);

int gdSeek(gdIOCtx *ctx, const int);
long gdTell(gdIOCtx *ctx);

#endif