filetostring.c

char *file2string(const char *path)
{
  FILE *fd;
	long len,
		 r;
	char *str;
 
	if (!(fd = fopen(path, "r")))
	{
		fprintf(stderr, "Can't open file '%s' for reading\n", path);
		return NULL;
	}
 
	fseek(fd, 0, SEEK_END);
	len = ftell(fd);
 
	printf("File '%s' is %ld long\n", path, len);
 
	fseek(fd, 0, SEEK_SET);
 
	if (!(str = malloc(len * sizeof(char))))
	{
		fprintf(stderr, "Can't malloc space for '%s'\n", path);
		return NULL;
	}
 
	r = fread(str, sizeof(char), len, fd);
 
	str[r - 1] = '\0'; /* Shader sources have to term with null */
 
	fclose(fd);
 
	return str;
}