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Added support for DST with configurable behavior.

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This commit is contained in:
Augusto Becciu
2016-10-28 17:53:31 -03:00
parent f0984319b4
commit 0dc543e5ad
5 changed files with 808 additions and 17 deletions
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78
example_test.go
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@@ -35,3 +35,81 @@ func ExampleMustParse() {
// Sun, 29 Feb 2032 00:00:00 UTC
}
}
// Configure the parser to skip times in DST leaps and
// repeat times in DST falls
func ExampleParseWithOptions_dst1() {
loc, _ := time.LoadLocation("America/Los_Angeles")
t := time.Date(2014, 3, 8, 1, 0, 0, 0, loc)
expr, _ := cronexpr.ParseWithOptions("0 0 2 * * * *", cronexpr.Options{
DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate,
})
fmt.Println("DST leap times:")
nextTimes := expr.NextN(t, 4)
for i := range nextTimes {
fmt.Println(nextTimes[i].Format(time.RFC1123))
}
t = time.Date(2014, 10, 31, 1, 0, 0, 0, loc)
expr, _ = cronexpr.ParseWithOptions("0 0 1 * * * *", cronexpr.Options{
DSTFlags: cronexpr.DSTFallFireEarly | cronexpr.DSTFallFireLate,
})
fmt.Println("DST fall times:")
nextTimes = expr.NextN(t, 4)
for i := range nextTimes {
fmt.Println(nextTimes[i].Format(time.RFC1123))
}
// Output:
// DST leap times:
// Sat, 08 Mar 2014 02:00:00 PST
// Mon, 10 Mar 2014 02:00:00 PDT
// Tue, 11 Mar 2014 02:00:00 PDT
// Wed, 12 Mar 2014 02:00:00 PDT
// DST fall times:
// Sat, 01 Nov 2014 01:00:00 PDT
// Sun, 02 Nov 2014 01:00:00 PDT
// Sun, 02 Nov 2014 01:00:00 PST
// Mon, 03 Nov 2014 01:00:00 PST
}
// Configure the parser to unskip times in DST leaps and
// fire late in DST falls
func ExampleParseWithOptions_dst2() {
loc, _ := time.LoadLocation("America/Los_Angeles")
t := time.Date(2014, 3, 8, 1, 0, 0, 0, loc)
expr, _ := cronexpr.ParseWithOptions("0 0 2 * * * *", cronexpr.Options{
DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireLate,
})
fmt.Println("DST leap times:")
nextTimes := expr.NextN(t, 4)
for i := range nextTimes {
fmt.Println(nextTimes[i].Format(time.RFC1123))
}
t = time.Date(2014, 10, 31, 1, 0, 0, 0, loc)
expr, _ = cronexpr.ParseWithOptions("0 0 1 * * * *", cronexpr.Options{
DSTFlags: cronexpr.DSTLeapUnskip | cronexpr.DSTFallFireLate,
})
fmt.Println("DST fall times:")
nextTimes = expr.NextN(t, 4)
for i := range nextTimes {
fmt.Println(nextTimes[i].Format(time.RFC1123))
}
// Output:
// DST leap times:
// Sat, 08 Mar 2014 02:00:00 PST
// Sun, 09 Mar 2014 03:00:00 PDT
// Mon, 10 Mar 2014 02:00:00 PDT
// Tue, 11 Mar 2014 02:00:00 PDT
// DST fall times:
// Sat, 01 Nov 2014 01:00:00 PDT
// Sun, 02 Nov 2014 01:00:00 PST
// Mon, 03 Nov 2014 01:00:00 PST
// Tue, 04 Nov 2014 01:00:00 PST
}