source: CIVL/include/headers/gd_io.h@ 1aaefd4

#ifdef __cplusplus
extern "C" {
#endif

#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);
                /* seek must return 1 on SUCCESS, 0 on FAILURE. Unlike fseek! */
                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 offset);
        long gdTell(gdIOCtx *ctx);

#endif

#ifdef __cplusplus
}
#endif