Chuyển tiếng việt có dấu thành không dấu trong GOLANG

import ( "bytes" "unicode/utf8" )

// Mang cac ky tu goc co dau var SOURCE_CHARACTERS, LL_LENGTH = stringToRune(`ÀÁÂÃÈÉÊÌÍÒÓÔÕÙÚÝàáâãèéêìíòóôõùúýĂăĐđĨĩŨũƠơƯưẠạẢảẤấẦầẨẩẪẫẬậẮắẰằẲẳẴẵẶặẸẹẺẻẼẽẾếỀềỂểỄễỆệỈỉỊịỌọỎỏỐốỒồỔổỖỗỘộỚớỜờỞởỠỡỢợỤụỦủỨứỪừỬửỮữỰự`)

// Mang cac ky tu thay the khong dau var DESTINATION_CHARACTERS, _ = stringToRune(`AAAAEEEIIOOOOUUYaaaaeeeiioooouuyAaDdIiUuOoUuAaAaAaAaAaAaAaAaAaAaAaAaEeEeEeEeEeEeEeEeIiIiOoOoOoOoOoOoOoOoOoOoOoOoUuUuUuUuUuUuUu`)

func stringToRune(s string) ([]string, int) {

ll := utf8.RuneCountInString(s)

var texts = make([]string, ll+1)

var index = 0

for _, runeValue := range s {

texts[index] = string(runeValue)

index++

}

return texts, ll

}

func binarySearch(sortedArray []string, key string, low int, high int) int {

var middle int = (low + high) / 2

if high < low { return -1 }

if key == sortedArray[middle] {

return middle

} else if key < sortedArray[middle] {

return binarySearch( sortedArray, key, low, middle-1)

} else {

return binarySearch( sortedArray, key, middle+1, high)

}

}

/** * Bo dau 1 ky tu * * @param ch * @return */

func removeAccentChar(ch string) string {

var index int = binarySearch(SOURCE_CHARACTERS, ch, 0, LL_LENGTH)

if index >= 0 {

ch = DESTINATION_CHARACTERS[index] } return ch

}

/** * Bo dau 1 chuoi * * @param s * @return */

func removeAccent(s string) string {

var buffer bytes.Buffer

for _, runeValue := range s { buffer.WriteString(removeAccentChar(string(runeValue)))

}

return buffer.String()

}