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fix_utc_timestamp.go
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fix_utc_timestamp.go
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// Copyright (c) quickfixengine.org All rights reserved.
//
// This file may be distributed under the terms of the quickfixengine.org
// license as defined by quickfixengine.org and appearing in the file
// LICENSE included in the packaging of this file.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING
// THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE.
//
// See http://www.quickfixengine.org/LICENSE for licensing information.
//
// Contact ask@quickfixengine.org if any conditions of this licensing
// are not clear to you.
package quickfix
import (
"errors"
"time"
)
// TimestampPrecision defines the precision used by FIXUTCTimestamp.
type TimestampPrecision int
// All TimestampPrecisions supported by FIX.
const (
Millis TimestampPrecision = iota
Seconds
Micros
Nanos
)
// FIXUTCTimestamp is a FIX UTC Timestamp value, implements FieldValue.
type FIXUTCTimestamp struct {
time.Time
Precision TimestampPrecision
}
const (
utcTimestampMillisFormat = "20060102-15:04:05.000"
utcTimestampSecondsFormat = "20060102-15:04:05"
utcTimestampMicrosFormat = "20060102-15:04:05.000000"
utcTimestampNanosFormat = "20060102-15:04:05.000000000"
)
func (f *FIXUTCTimestamp) Read(bytes []byte) (err error) {
switch len(bytes) {
// Seconds.
case 17:
f.Time, err = time.Parse(utcTimestampSecondsFormat, string(bytes))
f.Precision = Seconds
// Millis.
case 21:
f.Time, err = time.Parse(utcTimestampMillisFormat, string(bytes))
f.Precision = Millis
// micros
case 24:
f.Time, err = time.Parse(utcTimestampMicrosFormat, string(bytes))
f.Precision = Micros
// nanos
case 27:
f.Time, err = time.Parse(utcTimestampNanosFormat, string(bytes))
f.Precision = Nanos
default:
err = errors.New("Invalid Value for Timestamp: " + string(bytes))
}
return
}
func (f FIXUTCTimestamp) Write() []byte {
switch f.Precision {
case Seconds:
return []byte(f.UTC().Format(utcTimestampSecondsFormat))
case Micros:
return []byte(f.UTC().Format(utcTimestampMicrosFormat))
case Nanos:
return []byte(f.UTC().Format(utcTimestampNanosFormat))
}
return []byte(f.UTC().Format(utcTimestampMillisFormat))
}