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datetime.go
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datetime.go
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package common
import (
"time"
)
const (
//Year parse mask
Year = "2006"
//Month parse mask
Month = "01"
//Day parse mask
Day = "02"
//Hour parse mask
Hour = "15"
//Minute parse mask
Minute = "04"
//Second parse mask
Second = "05"
//Milli parse mask
Msec = ".000"
//DateSeparator parse mask
DateSeparator = "."
//TimeSeparator parse mask
TimeSeparator = ":"
//Separator parse mask
Separator = " "
)
type asDateTime interface {
Year() int
Month() time.Month
Day() int
Hour() int
Minute() int
Second() int
}
func ToTime(v asDateTime) time.Time {
return time.Date(v.Year(), v.Month(), v.Day(), 0, 0, 0, 0, time.Local)
}
// DateMaskFilena,e parses for date value for file names
var DateMaskFilename = Year + "-" + Month + "-" + Day
// DateMask parses only for date values
var DateMask = Day + DateSeparator + Month + DateSeparator + Year
// TimeMask parses only for time values
var TimeMask = Hour + TimeSeparator + Minute + TimeSeparator + Second
// DateTimeMask parses for date and time values
var DateTimeMask = DateMask + Separator + TimeMask
// DateTimeMask parses for date and time values
var DateTimeMilliMask = DateMask + Separator + TimeMask + Msec
// ParseDateTime parses only date, but no time
func ParseDateTime(mask string, v string) (time.Time, error) {
l, err := time.LoadLocation("Local")
if Error(err) {
return time.Time{}, err
}
return time.ParseInLocation(string(mask), v, l)
}
// ParseJsonDateTime parses only date, but no time
func ParseJsonDateTime(v string) (time.Time, error) {
l, err := time.Parse(time.RFC3339, v)
if Error(err) {
return time.Time{}, err
}
return l, nil
}
// EqualDateTime checks for equality of parts
func CompareDate(t1 time.Time, t2 time.Time) time.Duration {
return ClearTime(t1).Sub(ClearTime(t2))
}
// EqualTime checks for equality of time
func CompareTime(t1 time.Time, t2 time.Time) time.Duration {
return ClearDate(t1).Sub(ClearDate(t2))
}
// ClearTime returns only date part, time part set to 0
func ClearTime(v time.Time) time.Time {
return time.Date(v.Year(), v.Month(), v.Day(), 0, 0, 0, 0, v.Location())
}
// ClearDate returns only time part, date part set to 0
func ClearDate(v time.Time) time.Time {
return time.Date(0, 0, 0, v.Hour(), v.Minute(), v.Second(), v.Nanosecond(), v.Location())
}
func SetTime(t time.Time, f string, v int) time.Time {
y := t.Year()
m := t.Month()
d := t.Day()
h := t.Hour()
mi := t.Minute()
s := t.Second()
n := t.Nanosecond()
if f == Year {
y = v
}
if f == Month {
m = time.Month(v)
}
if f == Day {
d = v
}
if f == Hour {
h = v
}
if f == Minute {
mi = v
}
if f == Second {
s = v
}
if f == Msec {
n = v * 1000
}
return time.Date(y, m, d, h, mi, s, n, time.Local)
}
func TruncateTime(t time.Time, f string) time.Time {
y := t.Year()
m := t.Month()
d := t.Day()
h := t.Hour()
mi := t.Minute()
s := t.Second()
n := t.Nanosecond()
if f == Year {
m = time.January
d = 0
h = 0
mi = 0
s = 0
n = 0
}
if f == Month {
d = 0
h = 0
mi = 0
s = 0
n = 0
}
if f == Day {
h = 0
mi = 0
s = 0
n = 0
}
if f == Hour {
mi = 0
s = 0
n = 0
}
if f == Minute {
s = 0
n = 0
}
if f == Second {
n = 0
}
return time.Date(y, m, d, h, mi, s, n, time.Local)
}
func MillisecondToDuration(msec int) time.Duration {
return time.Millisecond * time.Duration(msec)
}
func DurationToMsec(d time.Duration) int {
return int(d.Milliseconds())
}