46 lines
708 B
Go
46 lines
708 B
Go
|
package cityhash102
|
||
|
|
|
||
|
|
import (
|
||
|
|
"encoding/binary"
|
||
|
|
"hash"
|
||
|
|
)
|
||
|
|
|
||
|
|
type City64 struct {
|
||
|
|
s []byte
|
||
|
|
}
|
||
|
|
|
||
|
|
var _ hash.Hash64 = (*City64)(nil)
|
||
|
|
var _ hash.Hash = (*City64)(nil)
|
||
|
|
|
||
|
|
func New64() hash.Hash64 {
|
||
|
|
return &City64{}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (this *City64) Sum(b []byte) []byte {
|
||
|
|
b2 := make([]byte, 8)
|
||
|
|
binary.BigEndian.PutUint64(b2, this.Sum64())
|
||
|
|
b = append(b, b2...)
|
||
|
|
return b
|
||
|
|
}
|
||
|
|
|
||
|
|
func (this *City64) Sum64() uint64 {
|
||
|
|
return CityHash64(this.s, uint32(len(this.s)))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (this *City64) Reset() {
|
||
|
|
this.s = this.s[0:0]
|
||
|
|
}
|
||
|
|
|
||
|
|
func (this *City64) BlockSize() int {
|
||
|
|
return 1
|
||
|
|
}
|
||
|
|
|
||
|
|
func (this *City64) Write(s []byte) (n int, err error) {
|
||
|
|
this.s = append(this.s, s...)
|
||
|
|
return len(s), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (this *City64) Size() int {
|
||
|
|
return 8
|
||
|
|
}
|