har *get_next_line(FILE * file)
{
	int index = 0;
	int bufsize = BUFSIZE;
	signed char temp;
	char *buffer = NULL;

	buffer = (char *) malloc(bufsize);
	if (!buffer)
		return NULL;

	while ((temp = fgetc(file)) != '\n') {
		if (feof(file))
			return NULL;

		if (index == bufsize) {
			bufsize += BUFSIZE;
			buffer = (char *) realloc(buffer, bufsize);
		}

		buffer[index++] = temp;
	}

	if (index == bufsize)
		buffer = (char *) realloc(buffer, ++bufsize);

	buffer[index] = '\0';
	buffer =
	    (char *) realloc(buffer, strlen(buffer) ? strlen(buffer) : 1);

	return buffer;
}