73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
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package datetime
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import (
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"math"
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"time"
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)
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// DiffInYears retourne (t1 - t2) exprimé en années.
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func DiffInYears(t1, t2 time.Time) int64 {
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y1, m1, d1 := t1.Date()
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y2, m2, d2 := t2.Date()
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dy, dm, dd := y1-y2, m1-m2, d1-d2
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if dm < 0 || (dm == 0 && dd < 0) {
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dy--
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}
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if dy < 0 && (dd != 0 || dm != 0) {
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dy++
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}
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return int64(dy)
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}
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// DiffInMonths retourne (t1 - t2) exprimé en mois.
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func DiffInMonths(t1, t2 time.Time) int64 {
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y1, m1, d1 := t1.Date()
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y2, m2, d2 := t2.Date()
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dy, dm, dd := y1-y2, m1-m2, d1-d2
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if dd < 0 {
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dm--
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}
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if dy == 0 && dm == 0 {
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return int64(dm)
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}
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if dy == 0 && dm != 0 && dd != 0 {
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dh := abs(DiffInHours(t1, t2))
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if int(dh) < DaysInMonth(t1)*HoursPerDay {
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return int64(0)
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}
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return int64(dm)
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}
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return int64(dy*MonthsPerYear + int(dm))
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}
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// DiffInWeeks retourne (t1 - t2) exprimé en semaines.
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func DiffInWeeks(t1, t2 time.Time) int64 {
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return int64(math.Floor(float64(DiffInSeconds(t1, t2)) / float64(SecondsPerWeek)))
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}
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// DiffInDays retourne (t1 - t2) exprimé en jours.
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func DiffInDays(t1, t2 time.Time) int64 {
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return int64(math.Floor(float64(DiffInSeconds(t1, t2)) / float64(SecondsPerDay)))
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}
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// DiffInHours retourne (t1 - t2) exprimé en heures.
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func DiffInHours(t1, t2 time.Time) int64 {
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return DiffInSeconds(t1, t2) / SecondsPerHour
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}
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// DiffInMinutes retourne (t1 - t2) exprimé en minutes.
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func DiffInMinutes(t1, t2 time.Time) int64 {
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return DiffInSeconds(t1, t2) / SecondsPerMinute
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}
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// DiffInSeconds retourne (t1 - t2) exprimé en secondes.
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func DiffInSeconds(t1, t2 time.Time) int64 {
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return t1.Unix() - t2.Unix()
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}
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