Golang duration.Duration类代码示例

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本文整理汇总了Golang中github.com/cockroachdb/cockroach/pkg/util/duration.Duration类的典型用法代码示例。如果您正苦于以下问题：Golang Duration类的具体用法？Golang Duration怎么用？Golang Duration使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Duration类的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: iso8601ToDuration

// Parses an ISO8601 (with designators) string.
// See the following links for examples:
//  - http://www.postgresql.org/docs/9.1/static/datatype-datetime.html#DATATYPE-INTERVAL-INPUT-EXAMPLES
//  - https://en.wikipedia.org/wiki/ISO_8601#Time_intervals
//  - https://en.wikipedia.org/wiki/ISO_8601#Durations
func iso8601ToDuration(s string) (duration.Duration, error) {
	var d duration.Duration
	if len(s) == 0 || s[0] != 'P' {
		return d, fmt.Errorf("interval: invalid iso8601 duration %s", s)
	}

	// Advance to offset 1, since we don't care about the leading P.
	l := intervalLexer{str: s, offset: 1, err: nil}
	unitMap := isoDateUnitMap

	for l.offset < len(s) {
		// Check if we're in the time part yet.
		if s[l.offset] == 'T' {
			unitMap = isoTimeUnitMap
			l.offset++
		}

		v := l.consumeInt()
		u := l.consumeUnit('T')
		if l.err != nil {
			return d, l.err
		}

		if unit, ok := unitMap[u]; ok {
			d = d.Add(unit.Mul(v))
		} else {
			return d, fmt.Errorf("interval: unknown unit %s in iso8601 duration %s", u, s)
		}
	}

	return d, nil
}

开发者ID:knz，项目名称:cockroach，代码行数:37，代码来源:interval.go

示例2: EncodeDurationDescending

// EncodeDurationDescending is the descending version of EncodeDurationAscending.
func EncodeDurationDescending(b []byte, d duration.Duration) ([]byte, error) {
	sortNanos, months, days, err := d.Encode()
	if err != nil {
		// TODO(dan): Handle this using d.EncodeBigInt() and the
		// durationBigNeg/durationBigPos markers.
		return b, err
	}
	b = append(b, durationMarker)
	b = EncodeVarintDescending(b, sortNanos)
	b = EncodeVarintDescending(b, months)
	b = EncodeVarintDescending(b, days)
	return b, nil
}

开发者ID:knz，项目名称:cockroach，代码行数:14，代码来源:encoding.go

示例3: postgresToDuration

// Parses a duration in the "traditional" Postgres format.
func postgresToDuration(s string) (duration.Duration, error) {
	var d duration.Duration
	l := intervalLexer{str: s, offset: 0, err: nil}
	for l.offset != len(l.str) {
		v := l.consumeInt()
		l.consumeSpaces()
		u := l.consumeUnit(' ')
		l.consumeSpaces()
		if unit, ok := postgresUnitMap[u]; ok {
			d = d.Add(unit.Mul(v))
		} else {
			return d, fmt.Errorf("interval: unknown unit %s in postgres duration %s", u, s)
		}
	}

	return d, nil
}

开发者ID:knz，项目名称:cockroach，代码行数:18，代码来源:interval.go

示例4: dateToDuration

// Parse dash separated date string to interval.
// We parse sql stardard string to interval by two steps.
// Parsing the date part and parsing the time part.
// See the following links for exampels:
//  - http://www.postgresql.org/docs/9.1/static/datatype-datetime.html#DATATYPE-INTERVAL-INPUT-EXAMPLES
func dateToDuration(s string) (duration.Duration, error) {
	var d duration.Duration
	if len(s) == 0 {
		return d, fmt.Errorf(errInvalidSQLDuration, s)
	}
	parts := strings.Split(s, "-")
	var v int
	var err error
	switch len(parts) {
	case 1:
		v, err = strconv.Atoi(parts[0])
		if err != nil {
			return d, fmt.Errorf(errInvalidSQLDuration, s)
		}
		d = d.Add(duration.Duration{Days: 1}.Mul(int64(v)))
	case 2:
		v, err = strconv.Atoi(parts[0])
		if err != nil {
			return d, fmt.Errorf(errInvalidSQLDuration, s)
		}
		d = d.Add(duration.Duration{Months: 12}.Mul(int64(v)))

		v, err = strconv.Atoi(parts[1])
		if err != nil {
			return d, fmt.Errorf(errInvalidSQLDuration, s)
		}
		d = d.Add(duration.Duration{Months: 1}.Mul(int64(v)))
	case 3:
		v, err = strconv.Atoi(parts[0])
		if err != nil {
			return d, fmt.Errorf(errInvalidSQLDuration, s)
		}
		d = d.Add(duration.Duration{Months: 12}.Mul(int64(v)))

		v, err = strconv.Atoi(parts[1])
		if err != nil {
			return d, fmt.Errorf(errInvalidSQLDuration, s)
		}
		d = d.Add(duration.Duration{Months: 1}.Mul(int64(v)))

		v, err = strconv.Atoi(parts[2])
		if err != nil {
			return d, fmt.Errorf(errInvalidSQLDuration, s)
		}
		d = d.Add(duration.Duration{Days: 1}.Mul(int64(v)))

	default:
		return d, fmt.Errorf(errInvalidSQLDuration, s)
	}
	return d, nil
}

开发者ID:BramGruneir，项目名称:cockroach，代码行数:56，代码来源:interval.go

注：本文中的github.com/cockroachdb/cockroach/pkg/util/duration.Duration类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。