civil

Documentation

Overview

Package civil implements types for civil time, a time-zone-independent representation of time that follows the rules of the proleptic Gregorian calendar with exactly 24-hour days, 60-minute hours, and 60-second minutes.

Because they lack location information, these types do not represent unique moments or intervals of time. Use time.Time for that purpose.

Index

• type Date
  • func DateOf(t time.Time) Date
  • func ParseDate(s string) (Date, error)
  • func (d Date) AddDays(n int) Date
  • func (d1 Date) After(d2 Date) bool
  • func (d1 Date) Before(d2 Date) bool
  • func (d Date) DaysSince(s Date) (days int)
  • func (d Date) In(loc *time.Location) time.Time
  • func (d Date) IsValid() bool
  • func (d Date) String() string
• type DateTime
  • func DateTimeOf(t time.Time) DateTime
  • func ParseDateTime(s string) (DateTime, error)
  • func (dt1 DateTime) After(dt2 DateTime) bool
  • func (dt1 DateTime) Before(dt2 DateTime) bool
  • func (dt DateTime) In(loc *time.Location) time.Time
  • func (dt DateTime) IsValid() bool
  • func (dt DateTime) String() string
• type Time
  • func ParseTime(s string) (Time, error)
  • func TimeOf(t time.Time) Time
  • func (t Time) IsValid() bool
  • func (t Time) String() string

Types

type Date

type Date struct {
	Year  int        // Year (e.g., 2014).
	Month time.Month // Month of the year (January = 1, ...).
	Day   int        // Day of the month, starting at 1.
}

A Date represents a date (year, month, day).

This type does not include location information, and therefore does not describe a unique 24-hour timespan.

func DateOf

func DateOf(t time.Time) Date

DateOf returns the Date in which a time occurs in that time's location.

func ParseDate

func ParseDate(s string) (Date, error)

ParseDate parses a string in RFC3339 full-date format and returns the date value it represents.

func (Date) AddDays

func (d Date) AddDays(n int) Date

AddDays returns the date that is n days in the future. n can also be negative to go into the past.

func (Date) After

func (d1 Date) After(d2 Date) bool

After reports whether d1 occurs after d2.

func (Date) Before

func (d1 Date) Before(d2 Date) bool

Before reports whether d1 occurs before d2.

func (Date) DaysSince

func (d Date) DaysSince(s Date) (days int)

DaysSince returns the signed number of days between the date and s, not including the end day. This is the inverse operation to AddDays.

func (Date) In

func (d Date) In(loc *time.Location) time.Time

In returns the time corresponding to time 00:00:00 of the date in the location.

In is always consistent with time.Date, even when time.Date returns a time on a different day. For example, if loc is America/Indiana/Vincennes, then both

time.Date(1955, time.May, 1, 0, 0, 0, 0, loc)

and

civil.Date{Year: 1955, Month: time.May, Day: 1}.In(loc)

return 23:00:00 on April 30, 1955.

In panics if loc is nil.

func (Date) IsValid

func (d Date) IsValid() bool

IsValid reports whether the date is valid.

func (Date) String

func (d Date) String() string

String returns the date in RFC3339 full-date format.

type DateTime

type DateTime struct {
	Date Date
	Time Time
}

A DateTime represents a date and time.

This type does not include location information, and therefore does not describe a unique moment in time.

func DateTimeOf

func DateTimeOf(t time.Time) DateTime

DateTimeOf returns the DateTime in which a time occurs in that time's location.

func ParseDateTime

func ParseDateTime(s string) (DateTime, error)

ParseDateTime parses a string and returns the DateTime it represents. ParseDateTime accepts a variant of the RFC3339 date-time format that omits the time offset but includes an optional fractional time, as described in ParseTime. Informally, the accepted format is

YYYY-MM-DDTHH:MM:SS[.FFFFFFFFF]

where the 'T' may be a lower-case 't'.

func (DateTime) After

func (dt1 DateTime) After(dt2 DateTime) bool

After reports whether dt1 occurs after dt2.

func (DateTime) Before

func (dt1 DateTime) Before(dt2 DateTime) bool

Before reports whether dt1 occurs before dt2.

func (DateTime) In

func (dt DateTime) In(loc *time.Location) time.Time

In returns the time corresponding to the DateTime in the given location.

If the time is missing or ambigous at the location, In returns the same result as time.Date. For example, if loc is America/Indiana/Vincennes, then both

time.Date(1955, time.May, 1, 0, 30, 0, 0, loc)

and

civil.DateTime{
    civil.Date{Year: 1955, Month: time.May, Day: 1}},
    civil.Time{Minute: 30}}.In(loc)

return 23:30:00 on April 30, 1955.

In panics if loc is nil.

func (DateTime) IsValid

func (dt DateTime) IsValid() bool

IsValid reports whether the datetime is valid.

func (DateTime) String

func (dt DateTime) String() string

String returns the date in the format described in ParseDate.

type Time

type Time struct {
	Hour       int // The hour of the day in 24-hour format; range [0-23]
	Minute     int // The minute of the hour; range [0-59]
	Second     int // The second of the minute; range [0-59]
	Nanosecond int // The nanosecond of the second; range [0-999999999]
}

A Time represents a time with nanosecond precision.

This type does not include location information, and therefore does not describe a unique moment in time.

This type exists to represent the TIME type in storage-based APIs like BigQuery. Most operations on Times are unlikely to be meaningful. Prefer the DateTime type.

func ParseTime

func ParseTime(s string) (Time, error)

ParseTime parses a string and returns the time value it represents. ParseTime accepts an extended form of the RFC3339 partial-time format. After the HH:MM:SS part of the string, an optional fractional part may appear, consisting of a decimal point followed by one to nine decimal digits. (RFC3339 admits only one digit after the decimal point).

func TimeOf

func TimeOf(t time.Time) Time

TimeOf returns the Time representing the time of day in which a time occurs in that time's location. It ignores the date.

func (Time) IsValid

func (t Time) IsValid() bool

IsValid reports whether the time is valid.

func (Time) String

func (t Time) String() string

String returns the date in the format described in ParseTime. If Nanoseconds is zero, no fractional part will be generated. Otherwise, the result will end with a fractional part consisting of a decimal point and nine digits.