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- #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 *);
-
- }
- 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 offset);
- long gdTell (gdIOCtx * ctx);
-
- #endif
-
- #ifdef __cplusplus
- }
- #endif
-