#include <stdio.h>
#include <sys/stat.h>
#include "fs_utils.h"

size_t get_file_size(const char *filename) {
    struct stat st;
    if (stat(filename, &st) == -1) {
        return 0;
    }

    return (size_t)st.st_size;
}

size_t read_from_file(void *dst, size_t dst_size, const char *filename) {
    FILE *file = fopen(filename, "rb");
    if (file == NULL) {
        return 0;
    } else {
        size_t sz = fread(dst, 1, dst_size, file);
        fclose(file);
        return sz;
    }
}

size_t dump_to_file(const void *src, size_t src_size, const char *filename) {
    FILE *file = fopen(filename, "wb+");
    if (file == NULL) {
        return 0;
    } else {
        size_t sz = fwrite(src, 1, src_size, file);
        fclose(file);
        return sz;
    }
}