组合或构造韩文字母

Is there anyway that I can combine this Korean consonants and vowels into a complete character.

For example if I have

  ㄱㅏㅁㅅㅏㅎㅏㅂㄴㅣㄷㅏ

It would be

  감사합니다

Is there any way to do this? I can only think of bruteforcing every case that would have to count many many cases.

Below is my try. Not optimal and take too much time.

if strings.Contains(input_str, "ㅏㄴㅈ") {
    input_str = strings.Replace(input_str, "ㅇㅏㄴㅈ", "앉", -1)
}

if strings.Contains(input_str, "ㅏㄹㅂ") {
    input_str = strings.Replace(input_str, "ㅂㅏㄹㅂ", "밟", -1)
}

if strings.Contains(input_str, "ㅏㅂㅅ") {
    input_str = strings.Replace(input_str, "ㄱㅏㅂㅅ", "값", -1)
}

What you want is Unicode normalization to compose hangul jamo. Go supports this but not (yet) in the standard library. See this related issue.

To import the external go.text/unicode/norm package use:

go get -u golang.org/x/text/unicode/norm

You probably want to use NFC which does a

  • Canonical Decomposition,
  • followed by Canonical Composition (which is what you want)

Example for NFD (decomposition):

// 앉 -> 앉
fmt.Println( string( norm.NFD.AppendString(nil, "앉") ) )

Example for NFC (composition):

// 앉 -> 앉
fmt.Println( string( norm.NFC.AppendString(nil, "앉") ) )