wireguard-go/tai64n/tai64n.go
Jason A. Donenfeld 9c9e7e2724 global: apply gofumpt
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-12-09 23:15:55 +01:00

42 lines
858 B
Go

/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package tai64n
import (
"bytes"
"encoding/binary"
"time"
)
const (
TimestampSize = 12
base = uint64(0x400000000000000a)
whitenerMask = uint32(0x1000000 - 1)
)
type Timestamp [TimestampSize]byte
func stamp(t time.Time) Timestamp {
var tai64n Timestamp
secs := base + uint64(t.Unix())
nano := uint32(t.Nanosecond()) &^ whitenerMask
binary.BigEndian.PutUint64(tai64n[:], secs)
binary.BigEndian.PutUint32(tai64n[8:], nano)
return tai64n
}
func Now() Timestamp {
return stamp(time.Now())
}
func (t1 Timestamp) After(t2 Timestamp) bool {
return bytes.Compare(t1[:], t2[:]) > 0
}
func (t Timestamp) String() string {
return time.Unix(int64(binary.BigEndian.Uint64(t[:8])-base), int64(binary.BigEndian.Uint32(t[8:12]))).String()
}