package diffmatchpatch

type index uint32

const runeSkipStart = 0xd800

const runeSkipEnd = 0xdfff + 1

const runeMax = 0x110000 // next invalid code point

func stringToIndex(text string) []index {

runes := []rune(text)

indexes := make([]index, len(runes))

for i, r := range runes {

if r < runeSkipEnd {

indexes[i] = index(r)

} else {

indexes[i] = index(r) - (runeSkipEnd - runeSkipStart)

}

}

return indexes

}

func indexesToString(indexes []index) string {

runes := make([]rune, len(indexes))

for i, index := range indexes {

if index < runeSkipStart {

runes[i] = rune(index)

} else {

runes[i] = rune(index + (runeSkipEnd - runeSkipStart))

}

}

return string(runes)

}