Define locale for parsing float values about libcyaml HOT 2 OPEN

bool my_yaml_loader(
		const char *path,
		my_data_t **data_out)
{
	char *old_locale, *saved_locale;
	unsigned sequence_count;
	bool ret = false;
	my_data_t *data;
	cyaml_err_t err;

	/* Get the name of the current locale.  */
	old_locale = setlocale (LC_ALL, NULL);

	/* Copy the name so it won’t be clobbered by setlocale. */
	saved_locale = strdup(old_locale);
	if (saved_locale == NULL) {
		fprintf(stderr, "Out of memory\n");
		return false;
	}

	/* Now change the locale to the one we want for loading. */
	setlocale (LC_ALL, "C");

	/* Do the load. */
	err = cyaml_load_file(path, config, schema, &data, &sequence_count);
	if (err != CYAML_OK) {
		fprintf(stderr, "Error loading %s: %s\n",
				path, cyaml_strerror(err));
		goto restore;
	}

	*data_out = data;
	ret = true;

restore:
	/* Restore the original locale. */
	setlocale (LC_ALL, saved_locale);
	free(saved_locale);

	return ret;
}