Function print_symbol_for_rustccfg

util/kconfig/confdata.c:806–863

}

static void print_symbol_for_rustccfg(FILE *fp, struct symbol *sym)
{
	const char *val;
	const char *val_prefix = "";
	char *val_prefixed = NULL;
	size_t val_prefixed_len;
	char *escaped = NULL;

	if (sym->type == S_UNKNOWN)
		return;

	val = sym_get_string_value(sym);

	switch (sym->type) {
	case S_BOOLEAN:
	case S_TRISTATE:
		/*
		 * We do not care about disabled ones, i.e. no need for
		 * what otherwise are "comments" in other printers.
		 */
		if (*val == 'n')
			return;

		/*
		 * To have similar functionality to the C macro `IS_ENABLED()`
		 * we provide an empty `--cfg CONFIG_X` here in both `y`
		 * and `m` cases.
		 *
		 * Then, the common `fprintf()` below will also give us
		 * a `--cfg CONFIG_X="y"` or `--cfg CONFIG_X="m"`, which can
		 * be used as the equivalent of `IS_BUILTIN()`/`IS_MODULE()`.
		 */
		fprintf(fp, "--cfg=%s%s\n", CONFIG_, sym->name);
		break;
	case S_HEX:
		if (val[0] != '0' || (val[1] != 'x' && val[1] != 'X'))
			val_prefix = "0x";
		break;
	default:
		break;
	}

	if (strlen(val_prefix) > 0) {
		val_prefixed_len = strlen(val) + strlen(val_prefix) + 1;
		val_prefixed = xmalloc(val_prefixed_len);
		snprintf(val_prefixed, val_prefixed_len, "%s%s", val_prefix, val);
		val = val_prefixed;
	}

	/* All values get escaped: the `--cfg` option only takes strings */
	escaped = escape_string_value(val);
	val = escaped;

	fprintf(fp, "--cfg=%s%s=%s\n", CONFIG_, sym->name, val);

	free(escaped);
	free(val_prefixed);
}