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/* 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()
}
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