utils

var ParseUnicode = StringFilterFunc(func(str string) string {
	buf := new(bytes.Buffer)
	chars := []byte(str)
	for i := 0; i < len(str); {
		if chars[i] == 92 && chars[i+1] == 117 {
			t, _ := strconv.ParseInt(string(chars[i+2:i+6]), 16, 32)
			buf.WriteString(fmt.Sprintf("%c", t))
			i += 6
		} else {
			buf.WriteByte(chars[i])
			i++
		}
	}
	return buf.String()
})

var ReplaceIllegalChar = StringFilterFunc(func(str string) string {
	reg := regexp.MustCompile(`[\/\\\:\*\?\"\<\>\|]`)
	return reg.ReplaceAllString(str, "_")
})

var UnescapeHTMLEntity = StringFilterFunc(html.UnescapeString)