golang emoji表情处理

package util
 
import (
    "regexp"
    "strconv"
    "strings"
)
 
//表情解码
func UnicodeEmojiDecode(s string) string {
    //emoji表情的数据表达式
    re := regexp.MustCompile("\\[[\\\\u0-9a-zA-Z]+\\]")
    //提取emoji数据表达式
    reg := regexp.MustCompile("\\[\\\\u|]")
    src := re.FindAllString(s, -1)
    for i := 0; i < len(src); i++ {
        e := reg.ReplaceAllString(src[i], "")
        p, err := strconv.ParseInt(e, 16, 32)
        if err == nil {
            s = strings.Replace(s, src[i], string(rune(p)), -1)
        }
    }
    return s
}
 
//表情转换
func UnicodeEmojiCode(s string) string {
    ret := ""
    rs := []rune(s)
    for i := 0; i < len(rs); i++ {
        if len(string(rs[i])) == 4 {
            u := `[\u` + strconv.FormatInt(int64(rs[i]), 16) + `]`
            ret += u
 
        } else {
            ret += string(rs[i])
        }
    }
    return ret
}