// StringToBytes converts the body into a slice of bytes with the given charset encoding.
//
// CRLF line break is enforced.
// Line break are inserted if a line is longer than 1000 characters (including CRLF).
func StringToBody(str, encoding string) ([]byte, error) {
in := bufio.NewScanner(bytes.NewBufferString(str))
out := new(bytes.Buffer)
var err error
var line []byte
for in.Scan() {
line = in.Bytes()
for {
// Lines can not be longer that 1000 characters including CRLF.
n := min(len(line), 1000-2)
out.Write(line[:n])
out.WriteString("\r\n")
line = line[n:]
if len(line) == 0 {
break
}
}
}
translator, err := charset.TranslatorTo(encoding)
if err != nil {
return out.Bytes(), err
}
_, translated, err := translator.Translate(out.Bytes(), true)
return translated, err
}
func (lcd *LCD) WriteString(s string, sleepChar, sleepWord int) {
tr, _ := charset.TranslatorTo("windows-1251")
_, s1251, _ := tr.Translate([]byte(s), true)
for _, r := range s1251 {
if r != '\n' {
lcd.Data(byte(r))
} else {
lcd.CommandAddress(0x40)
}
if r == ' ' && sleepWord > 0 {
time.Sleep(time.Duration(sleepWord) * time.Millisecond)
} else if sleepChar > 0 {
time.Sleep(time.Duration(sleepChar) * time.Millisecond)
}
}
}