carbon/season.go
2022-04-12 23:24:49 +08:00

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