+/*
+goredo -- redo implementation on pure Go
+Copyright (C) 2020 Sergey Matveev <stargrave@stargrave.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 3 of the License.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
package main
import (
+ "bufio"
"encoding/binary"
+ "encoding/hex"
+ "errors"
+ "io"
+ "strings"
"time"
)
-type TAI64N [12]byte
+const (
+ TAI64NSize = 12
+ TAI64NBase = 0x400000000000000a
+ TAI64NLocalFmt = "2006-01-02 15:04:05.000000000"
+)
+
+type TAI64N [TAI64NSize]byte
func tai64nNow(ts *TAI64N) {
t := time.Now()
- binary.BigEndian.PutUint64(ts[:], uint64(0x400000000000000a)+uint64(t.Unix()))
+ binary.BigEndian.PutUint64(ts[:], uint64(TAI64NBase)+uint64(t.Unix()))
binary.BigEndian.PutUint32(ts[8:], uint32(t.Nanosecond()))
}
+
+func tai64nLocal(dst io.StringWriter, src io.Reader) error {
+ scanner := bufio.NewScanner(src)
+ var err error
+ var s string
+ var sep int
+ var ts []byte
+ var secs int64
+ var nano int64
+ var t time.Time
+ for {
+ if !scanner.Scan() {
+ if err = scanner.Err(); err != nil {
+ return err
+ }
+ break
+ }
+ s = scanner.Text()
+
+ if s[0] != '@' {
+ dst.WriteString(s + "\n")
+ }
+ sep = strings.IndexByte(s, byte(' '))
+ if sep == -1 {
+ dst.WriteString(s + "\n")
+ }
+ ts, err = hex.DecodeString(s[1:sep])
+ if err != nil {
+ return err
+ }
+ if len(ts) != TAI64NSize {
+ return errors.New("invalid ts length")
+ }
+ secs = int64(binary.BigEndian.Uint64(ts[:8]))
+ nano = int64(binary.BigEndian.Uint32(ts[8:]))
+ t = time.Unix(secs-TAI64NBase, nano)
+ dst.WriteString(t.Format(TAI64NLocalFmt) + s[sep:] + "\n")
+ }
+ return nil
+}