package main

import (
	"bytes"
	"fmt"
	"log"
	"unicode/utf8"

	"golang.org/x/text/encoding/traditionalchinese"
)

func main() {

	src := []byte{165, 93} //big5 : 包

	// big5 to utf8
	b1, err := traditionalchinese.Big5.NewDecoder().Bytes(src)
	if err != nil {
		log.Fatalln(err)
	}

	r, _ := utf8.DecodeRune(b1)
	fmt.Printf("包 unicode:0x%X big5:0x%X\n", r, src)

	// utf8 to big5
	b2, err := traditionalchinese.Big5.NewEncoder().Bytes(b1)
	if err != nil {
		log.Fatalln(err)
	}

	// not equal
	fmt.Println(src, b2, bytes.Equal(src, b2))

	fmt.Println("--------------------------")

	src = []byte{176, 168} //big5 : 馬

	// big5 to utf8
	b1, err = traditionalchinese.Big5.NewDecoder().Bytes(src)
	if err != nil {
		log.Fatalln(err)
	}

	r, _ = utf8.DecodeRune(b1)
	fmt.Printf("馬 unicode:0x%X big5:0x%X\n", r, src)

	// utf8 to big5
	b2, err = traditionalchinese.Big5.NewEncoder().Bytes(b1)
	if err != nil {
		log.Fatalln(err)
	}

	// equal
	fmt.Println(src, b2, bytes.Equal(src, b2))

}