func DecodeLastRune(p []byte) (r rune, size int)
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
b := []byte("Hello, 世界")
for len(b) > 0 {
r, size := utf8.DecodeLastRune(b)
fmt.Printf("%c %v\n", r, size)
b = b[:len(b)-size]
}
}
func DecodeLastRuneInString(s string) (r rune, size int)
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
str := "Hello, 世界"
for len(str) > 0 {
r, size := utf8.DecodeLastRuneInString(str)
fmt.Printf("%c %v\n", r, size)
str = str[:len(str)-size]
}
}
func DecodeRune(p []byte) (r rune, size int)
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
b := []byte("Hello, 世界")
for len(b) > 0 {
r, size := utf8.DecodeRune(b)
fmt.Printf("%c %v\n", r, size)
b = b[size:]
}
}
func DecodeRuneInString(s string) (r rune, size int)
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
str := "Hello, 世界"
for len(str) > 0 {
r, size := utf8.DecodeRuneInString(str)
fmt.Printf("%c %v\n", r, size)
str = str[size:]
}
}
func EncodeRune(p []byte, r rune) int
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
r := '世'
buf := make([]byte, 3)
n := utf8.EncodeRune(buf, r)
fmt.Println(buf)
fmt.Println(n)
}
func RuneCount(p []byte) int
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
buf := []byte("Hello, 世界")
fmt.Println("bytes =", len(buf))
fmt.Println("runes =", utf8.RuneCount(buf))
}
func RuneCountInString(s string) (n int)
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
str := "Hello, 世界"
fmt.Println("bytes =", len(str))
fmt.Println("runes =", utf8.RuneCountInString(str))
}
func RuneLen(r rune) int
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
fmt.Println(utf8.RuneLen('a'))
fmt.Println(utf8.RuneLen('界'))
}
func Valid(p []byte) bool
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
valid := []byte("Hello, 世界")
invalid := []byte{0xff, 0xfe, 0xfd}
fmt.Println(utf8.Valid(valid))
fmt.Println(utf8.Valid(invalid))
}
func ValidRune(r rune) bool
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
valid := 'a'
invalid := rune(0xfffffff)
fmt.Println(utf8.ValidRune(valid))
fmt.Println(utf8.ValidRune(invalid))
}
func ValidString(s string) bool
package main
import (
"fmt"
"unicode/utf8"
)
func main() {
valid := "Hello, 世界"
invalid := string([]byte{0xff, 0xfe, 0xfd})
fmt.Println(utf8.ValidString(valid))
fmt.Println(utf8.ValidString(invalid))
}