record.h

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#pragma once
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
 
struct record
{
    unsigned char type;
    void *data;
};
 
#define LAST_RECORD_TYPE 7
 
enum record_type
{
    RECORD_TYPE_NULL = 0,
    RECORD_TYPE_CHAR = 1,
    RECORD_TYPE_SHORT = 2,
    RECORD_TYPE_INT = 3,
    RECORD_TYPE_LONG = 4,
    RECORD_TYPE_FLOAT = 5,
    RECORD_TYPE_0 = 6,
    RECORD_TYPE_1 = 7,
};
 
size_t record_size(struct record *record);
 
size_t record_type_size(char type);
 
int record_get_char(struct record *record, char **buffer);
int record_get_string(struct record *record, char **buffer);
int record_get_short(struct record *record, short *buffer);
int record_get_long(struct record *record, long *buffer);
 
int *record_get_int(struct record *record, int *buffer);
 
float *record_get_float(struct record *record, float *buffer);
 
struct record *record_from_char(char *data);
 
struct record *record_from_short(short *data);
 
struct record *record_from_int(int *data);
 
struct record *record_from_long(long *data);
 
struct record *record_from_float(float *data);
 
struct record *record_from_string(char **data);
 
int compress_records(struct record **records, size_t nb_records, size_t *size, void **buffer);
 
struct record *extract_record(void *buffer, size_t n);
 
int replace_record(void **buffer, size_t *size, size_t n, struct record *record);
 
int compare_r(struct record *r1, struct record *r2);
 
void free_record(struct record *record);