gd_io.h

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#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 gdGetWordLSB(signed short int *result, gdIOCtx *ctx);
int gdGetInt(int *result, gdIOCtx *ctx);
int gdGetIntLSB(signed int *result, gdIOCtx *ctx);
 
int gdSeek(gdIOCtx *ctx, const int);
long gdTell(gdIOCtx *ctx);
 
#endif