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package carbon
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import (
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"strings"
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"time"
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)
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// Season gets season name according to the meteorological division method, i18n is supported.
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// 获取当前季节(以气象划分)，支持i18n
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func (c Carbon) Season() string {
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if c.IsInvalid() {
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return ""
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}
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if len(c.lang.resources) == 0 {
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c.lang.SetLocale(defaultLocale)
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}
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index := -1
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switch {
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case c.Month() == 3 || c.Month() == 4 || c.Month() == 5:
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index = 0
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case c.Month() == 6 || c.Month() == 7 || c.Month() == 8:
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index = 1
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case c.Month() == 9 || c.Month() == 10 || c.Month() == 11:
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index = 2
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case c.Month() == 12 || c.Month() == 1 || c.Month() == 2:
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index = 3
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}
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if seasons, ok := c.lang.resources["seasons"]; ok {
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slice := strings.Split(seasons, "|")
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if len(slice) == 4 {
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return slice[index]
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}
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}
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return ""
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}
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// StartOfSeason returns a Carbon instance for start of the season.
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// 本季节开始时间
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func (c Carbon) StartOfSeason() Carbon {
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if c.IsInvalid() {
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return c
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}
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if c.Month() == 1 || c.Month() == 2 {
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c.Time = time.Date(c.Year()-1, time.Month(12), 1, 0, 0, 0, 0, c.loc)
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return c
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}
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c.Time = time.Date(c.Year(), time.Month(c.Month()/3*3), 1, 0, 0, 0, 0, c.loc)
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return c
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}
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// EndOfSeason returns a Carbon instance for end of the season.
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// 本季节结束时间
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func (c Carbon) EndOfSeason() Carbon {
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if c.IsInvalid() {
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return c
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}
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if c.Month() == 1 || c.Month() == 2 {
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c.Time = time.Date(c.Year(), time.Month(2), 1, 23, 59, 59, 999999999, c.loc).AddDate(0, 1, -1)
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return c
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}
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if c.Month() == 12 {
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c.Time = time.Date(c.Year()+1, time.Month(2), 1, 23, 59, 59, 999999999, c.loc).AddDate(0, 1, -1)
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return c
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}
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c.Time = time.Date(c.Year(), time.Month(c.Month()/3*3+2), 1, 23, 59, 59, 999999999, c.loc).AddDate(0, 1, -1)
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return c
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}
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// IsSpring whether is spring.
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// 是否是春季
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func (c Carbon) IsSpring() bool {
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if c.IsInvalid() {
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return false
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}
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if c.Month() == 3 || c.Month() == 4 || c.Month() == 5 {
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return true
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}
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return false
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}
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// IsSummer whether is summer.
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// 是否是夏季
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func (c Carbon) IsSummer() bool {
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if c.IsInvalid() {
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return false
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}
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if c.Month() == 6 || c.Month() == 7 || c.Month() == 8 {
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return true
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}
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return false
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}
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// IsAutumn whether is autumn.
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// 是否是秋季
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func (c Carbon) IsAutumn() bool {
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if c.IsInvalid() {
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return false
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}
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if c.Month() == 9 || c.Month() == 10 || c.Month() == 11 {
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return true
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}
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return false
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}
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// IsWinter whether is winter.
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// 是否是冬季
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func (c Carbon) IsWinter() bool {
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if c.IsInvalid() {
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return false
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}
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if c.Month() == 12 || c.Month() == 1 || c.Month() == 2 {
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return true
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}
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return false
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}
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