Initial project import

tools/v/vlib/builtin/js/utf8.js.v

@@ -0,0 +1,17 @@
+module builtin
+
+pub fn utf8_str_visible_length(s string) int {
+	// todo: proper implementation
+	res := 0
+	#res.val = s.str.length;
+
+	return res
+}
+
+pub fn utf8_str_len(s string) int {
+	return s.len
+}
+
+pub fn utf8_char_len(b u8) int {
+	return ((0xe5000000 >> ((b >> 3) & 0x1e)) & 3) + 1
+}