23 lines
279 B
Go
23 lines
279 B
Go
|
package utf8s
|
||
|
|
|
||
|
|
// Len returns the number of bytes in a UTF-8 encoding of this Unicode code point.
|
||
|
|
func Len(r rune) int {
|
||
|
|
|
||
|
|
switch {
|
||
|
|
case 127 > r:
|
||
|
|
return 1
|
||
|
|
|
||
|
|
case 0x7FF >= r:
|
||
|
|
return 2
|
||
|
|
|
||
|
|
case 0xFFFF >= r:
|
||
|
|
return 3
|
||
|
|
|
||
|
|
case 0x10FFFF >= r:
|
||
|
|
return 4
|
||
|
|
|
||
|
|
default:
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
}
|