func hasHangul(s string) bool {
for _, c := range s {
if han.IsHangul(c) {
return true
}
}
log.Printf("%s not has hangul\n", s)
return false
}
func Encode(s string) (string, int) {
needForeignMarker := hasHangul(s)
var currentMarker rune
rs := make([]rune, 0)
for _, c := range s {
switch {
case han.IsJaeum(c) || han.IsMoeum(c):
if currentMarker != markerJamo {
rs = append(rs, markerJamo)
currentMarker = markerJamo
}
rs = append(rs, Jamo(c)...)
case han.IsHangul(c):
// In Korean braille string there is no marker for
// Korean string.
if currentMarker != 0x00 {
currentMarker = 0x00
}
i, m, f := han.Split(c)
rs = append(rs, Jamo(i)...)
rs = append(rs, Jamo(m)...)
rs = append(rs, Jamo(f)...)
case '0' <= c && c <= '9':
if currentMarker != markerNumber {
rs = append(rs, markerNumber)
currentMarker = markerNumber
}
rs = append(rs, brl.Alphabet(c)...)
case ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'):
if currentMarker != markerForeign {
if needForeignMarker {
rs = append(rs, markerForeign)
}
currentMarker = markerForeign
}
rs = append(rs, brl.Alphabet(c)...)
case isSupportedSymbol(c):
// No marker change in symbols... Is it right?
rs = append(rs, symbol[c]...)
case c == 0x20:
rs = append(rs, brl.Rune())
currentMarker = 0x00
case c == 0x0a:
rs = append(rs, c)
currentMarker = 0x00
default:
log.Printf("Braille for %c(0x%x) not present... yet", c, c)
rs = append(rs, brl.BrailleCodeBase)
}
}
return string(rs), len(rs)
}