Simple file loader

file.c

#include <stdio.h>
#include <stdlib.h>

#include "file.h"


bool file_load(const char *path, file_t *out) {

  if (out->data) {
    file_unload(out);
  }

  FILE *fd = fopen(path, "rb");
  if (!fd) {
    return false;
  }

  fseek(fd, 0, SEEK_END);
  out->size = ftell(fd);
  fseek(fd, 0, SEEK_SET);

  if (out->size == 0) {
    fclose(fd);
    return false;
  }
  out->data = malloc(out->size);
  if (out->data == NULL) {
    fclose(fd);
    return false;
  }

  const size_t read = fread(out->data, 1, out->size, fd);

  fclose(fd);
  if (read != out->size) {
    file_unload(out);
    return false;
  }

  return true;
}

void file_unload(file_t *out) {
  if (out->data) {
    free(out->data);
    out->data = NULL;
  }
  out->size = 0;
}

file.h

#pragma once
#include <stdbool.h>
#include <stdint.h>


typedef struct {
  uint8_t *data;
  uint32_t size;
} file_t;

bool file_load(const char *path, file_t *out);
void file_unload(file_t *out);