stream.h

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#ifndef EAARLIO_STREAM_H
#define EAARLIO_STREAM_H

#include "eaarlio/error.h"
#include <stdint.h>
#include <stdio.h>
#include <string.h>

struct eaarlio_stream {
    eaarlio_error (*close)(struct eaarlio_stream *self);

    eaarlio_error (*read)(struct eaarlio_stream *self,
        uint64_t len,
        unsigned char *buffer);

    eaarlio_error (*write)(struct eaarlio_stream *self,
        uint64_t len,
        unsigned char const *buffer);

    eaarlio_error (
        *seek)(struct eaarlio_stream *self, int64_t offset, int whence);

    eaarlio_error (*tell)(struct eaarlio_stream *self, int64_t *position);

    void *data;
};

#define eaarlio_stream_empty()                                                 \
    (struct eaarlio_stream)                                                    \
    {                                                                          \
        NULL, NULL, NULL, NULL, NULL, NULL                                     \
    }

#endif