#ifndef TAPE_H_
#define TAPE_H_

#include <stdio.h>
#include "record.h"

#define PAGE_SIZE 4096

#define TAPE_READ   "rb"
#define TAPE_WRITE  "wb"
#define TAPE_APPEND "ab"

extern unsigned reads;
extern unsigned writes;

typedef struct {
    FILE* file;
    char* name;
    const char* mode;

    void* buffer;

    unsigned offset;
    size_t   read;
    int      block;
} tape_t;

tape_t* tape_open(const char* filename, const char* mode);
void    tape_close(tape_t* tape);

void* tape_read(tape_t* tape, void* record, size_t size);
int tape_write(tape_t* tape, void* record, size_t size);

int tape_rewind(tape_t* tape, size_t count, size_t size);

#endif