[rbdr/mobius] / hotline / time.go

package hotline

import (
	"encoding/binary"
	"slices"
	"time"
)

// toHotlineTime converts a time.Time to the 8 byte Hotline time format:
// Year (2 bytes), milliseconds (2 bytes) and seconds (4 bytes)
func toHotlineTime(t time.Time) (b [8]byte) {
	yearBytes := make([]byte, 2)
	secondBytes := make([]byte, 4)

	// Get a time.Time for January 1st 00:00 from t so we can calculate the difference in seconds from t
	startOfYear := time.Date(t.Year(), time.January, 1, 0, 0, 0, 0, time.Local)

	binary.BigEndian.PutUint16(yearBytes, uint16(t.Year()))
	binary.BigEndian.PutUint32(secondBytes, uint32(t.Sub(startOfYear).Seconds()))

	return [8]byte(slices.Concat(
		yearBytes,
		[]byte{0, 0},
		secondBytes,
	))
}
Commit	Line	Data
29f329ae JH	1	package hotline
	2
	3	import (
	4	"encoding/binary"
95159e55	5	"slices"
29f329ae JH	6	"time"
	7	)
	8
	9	// toHotlineTime converts a time.Time to the 8 byte Hotline time format:
	10	// Year (2 bytes), milliseconds (2 bytes) and seconds (4 bytes)
95159e55	11	func toHotlineTime(t time.Time) (b [8]byte) {
29f329ae JH	12	yearBytes := make([]byte, 2)
	13	secondBytes := make([]byte, 4)
	14
	15	// Get a time.Time for January 1st 00:00 from t so we can calculate the difference in seconds from t
	16	startOfYear := time.Date(t.Year(), time.January, 1, 0, 0, 0, 0, time.Local)
	17
	18	binary.BigEndian.PutUint16(yearBytes, uint16(t.Year()))
	19	binary.BigEndian.PutUint32(secondBytes, uint32(t.Sub(startOfYear).Seconds()))
	20
95159e55 JH	21	return [8]byte(slices.Concat(
	22	yearBytes,
	23	[]byte{0, 0},
	24	secondBytes,
	25	))
29f329ae	26	}