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dateparse/README.md

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doc readme
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Go Date Parser
---------------------------
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Parse any date string without knowing format in advance. Uses a scanner to read bytes and use a state machine to find format. Much faster than shotgun based parse methods. See [bench_test.go](https://github.com/araddon/dateparse/blob/master/bench_test.go) for performance comparison.
Benchmark tests for DateParse
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100% test coverage and simplification
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[![Codecov](https://img.shields.io/codecov/c/github/araddon/dateparse.svg)]()
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**Timezones** The location your server is configured effects the results! See example or https://play.golang.org/p/IDHRalIyXh and last paragraph here https://golang.org/pkg/time/#Parse.
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Parse In Location api
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```go
// Normal parse
t, err := dateparse.ParseAny("3/1/2014")
// Parse with Location
denverLoc, _ := time.LoadLocation("America/Denver")
t, err := dateparse.ParseIn("3/1/2014", denverLoc)
```
Extended example https://github.com/araddon/dateparse/blob/master/example/main.go
doc readme
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```go
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package main
import (
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"flag"
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"fmt"
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"time"
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"github.com/apcera/termtables"
"github.com/araddon/dateparse"
)
var examples = []string{
"May 8, 2009 5:57:51 PM",
"Mon Jan 2 15:04:05 2006",
"Mon Jan 2 15:04:05 MST 2006",
"Mon Jan 02 15:04:05 -0700 2006",
"Monday, 02-Jan-06 15:04:05 MST",
"Mon, 02 Jan 2006 15:04:05 MST",
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"Tue, 11 Jul 2017 16:28:13 +0200 (CEST)",
"Mon, 02 Jan 2006 15:04:05 -0700",
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"Mon Aug 10 15:44:11 UTC+0100 2015",
"Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)",
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"12 Feb 2006, 19:17",
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"2013-Feb-03",
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// mm/dd/yy
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"3/31/2014",
"03/31/2014",
"08/21/71",
"8/1/71",
"4/8/2014 22:05",
"04/08/2014 22:05",
"04/2/2014 03:00:51",
"8/8/1965 12:00:00 AM",
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"8/8/1965 01:00:01 PM",
"8/8/1965 01:00 PM",
"8/8/1965 1:00 PM",
"8/8/1965 12:00 AM",
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"4/02/2014 03:00:51",
"03/19/2012 10:11:59",
"03/19/2012 10:11:59.3186369",
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// yyyy/mm/dd
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"2014/3/31",
"2014/03/31",
"2014/4/8 22:05",
"2014/04/08 22:05",
"2014/04/2 03:00:51",
"2014/4/02 03:00:51",
"2012/03/19 10:11:59",
"2012/03/19 10:11:59.3186369",
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// yyyy-mm-ddThh
"2006-01-02T15:04:05+0000",
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"2009-08-12T22:15:09-07:00",
"2009-08-12T22:15:09",
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"2009-08-12T22:15:09Z",
// yyyy-mm-dd hh:mm:ss
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"2014-04-26 17:24:37.3186369",
"2012-08-03 18:31:59.257000000",
"2014-04-26 17:24:37.123",
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"2013-04-01 22:43:22",
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"2014-12-16 06:20:00 UTC",
"2014-12-16 06:20:00 GMT",
"2014-04-26 05:24:37 PM",
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"2014-04-26 13:13:43 +0800",
"2014-04-26 13:13:44 +09:00",
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"2012-08-03 18:31:59.257000000 +0000 UTC",
"2015-09-30 18:48:56.35272715 +0000 UTC",
"2015-02-18 00:12:00 +0000 GMT",
"2015-02-18 00:12:00 +0000 UTC",
"2017-07-19 03:21:51+00:00",
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"2014-04-26",
"2014-04",
"2014",
"2014-05-11 08:20:13,787",
// yyyymmdd and similar
"20140601",
// unix seconds, ms
"1332151919",
"1384216367189",
}
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var (
timezone = ""
)
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func main() {
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flag.StringVar(&timezone, "timezone", "UTC", "Timezone aka `America/Los_Angeles` formatted time-zone")
flag.Parse()
if timezone != "" {
// NOTE: This is very, very important to understand
// time-parsing in go
loc, err := time.LoadLocation(timezone)
if err != nil {
panic(err.Error())
}
time.Local = loc
}
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table := termtables.CreateTable()
table.AddHeaders("Input", "Parsed, and Output as %v")
for _, dateExample := range examples {
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t, err := dateparse.ParseLocal(dateExample)
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if err != nil {
panic(err.Error())
}
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table.AddRow(dateExample, fmt.Sprintf("%v", t))
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}
fmt.Println(table.Render())
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}
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/*
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+-------------------------------------------------------+----------------------------------------+
| Input | Parsed, and Output as %v |
+-------------------------------------------------------+----------------------------------------+
| May 8, 2009 5:57:51 PM | 2009-05-08 17:57:51 +0000 UTC |
| Mon Jan 2 15:04:05 2006 | 2006-01-02 15:04:05 +0000 UTC |
| Mon Jan 2 15:04:05 MST 2006 | 2006-01-02 15:04:05 +0000 MST |
| Mon Jan 02 15:04:05 -0700 2006 | 2006-01-02 15:04:05 -0700 -0700 |
| Monday, 02-Jan-06 15:04:05 MST | 2006-01-02 15:04:05 +0000 MST |
| Mon, 02 Jan 2006 15:04:05 MST | 2006-01-02 15:04:05 +0000 MST |
| Tue, 11 Jul 2017 16:28:13 +0200 (CEST) | 2017-07-11 16:28:13 +0200 +0200 |
| Mon, 02 Jan 2006 15:04:05 -0700 | 2006-01-02 15:04:05 -0700 -0700 |
| Mon Aug 10 15:44:11 UTC+0100 2015 | 2015-08-10 15:44:11 +0000 UTC |
| Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time) | 2015-07-03 18:04:07 +0100 GMT |
| 12 Feb 2006, 19:17 | 2006-02-12 19:17:00 +0000 UTC |
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| 2013-Feb-03 | 2013-02-03 00:00:00 +0000 UTC |
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| 3/31/2014 | 2014-03-31 00:00:00 +0000 UTC |
| 03/31/2014 | 2014-03-31 00:00:00 +0000 UTC |
| 08/21/71 | 1971-08-21 00:00:00 +0000 UTC |
| 8/1/71 | 1971-08-01 00:00:00 +0000 UTC |
| 4/8/2014 22:05 | 2014-04-08 22:05:00 +0000 UTC |
| 04/08/2014 22:05 | 2014-04-08 22:05:00 +0000 UTC |
| 04/2/2014 03:00:51 | 2014-04-02 03:00:51 +0000 UTC |
| 8/8/1965 12:00:00 AM | 1965-08-08 00:00:00 +0000 UTC |
| 8/8/1965 01:00:01 PM | 1965-08-08 13:00:01 +0000 UTC |
| 8/8/1965 01:00 PM | 1965-08-08 13:00:00 +0000 UTC |
| 8/8/1965 1:00 PM | 1965-08-08 13:00:00 +0000 UTC |
| 8/8/1965 12:00 AM | 1965-08-08 00:00:00 +0000 UTC |
| 4/02/2014 03:00:51 | 2014-04-02 03:00:51 +0000 UTC |
| 03/19/2012 10:11:59 | 2012-03-19 10:11:59 +0000 UTC |
| 03/19/2012 10:11:59.3186369 | 2012-03-19 10:11:59.3186369 +0000 UTC |
| 2014/3/31 | 2014-03-31 00:00:00 +0000 UTC |
| 2014/03/31 | 2014-03-31 00:00:00 +0000 UTC |
| 2014/4/8 22:05 | 2014-04-08 22:05:00 +0000 UTC |
| 2014/04/08 22:05 | 2014-04-08 22:05:00 +0000 UTC |
| 2014/04/2 03:00:51 | 2014-04-02 03:00:51 +0000 UTC |
| 2014/4/02 03:00:51 | 2014-04-02 03:00:51 +0000 UTC |
| 2012/03/19 10:11:59 | 2012-03-19 10:11:59 +0000 UTC |
| 2012/03/19 10:11:59.3186369 | 2012-03-19 10:11:59.3186369 +0000 UTC |
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| 2006-01-02T15:04:05+0000 | 2006-01-02 15:04:05 +0000 UTC |
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| 2009-08-12T22:15:09-07:00 | 2009-08-12 22:15:09 -0700 -0700 |
| 2009-08-12T22:15:09 | 2009-08-12 22:15:09 +0000 UTC |
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| 2009-08-12T22:15:09Z | 2009-08-12 22:15:09 +0000 UTC |
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| 2014-04-26 17:24:37.3186369 | 2014-04-26 17:24:37.3186369 +0000 UTC |
| 2012-08-03 18:31:59.257000000 | 2012-08-03 18:31:59.257 +0000 UTC |
| 2014-04-26 17:24:37.123 | 2014-04-26 17:24:37.123 +0000 UTC |
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| 2013-04-01 22:43:22 | 2013-04-01 22:43:22 +0000 UTC |
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| 2014-12-16 06:20:00 UTC | 2014-12-16 06:20:00 +0000 UTC |
| 2014-12-16 06:20:00 GMT | 2014-12-16 06:20:00 +0000 UTC |
| 2014-04-26 05:24:37 PM | 2014-04-26 17:24:37 +0000 UTC |
| 2014-04-26 13:13:43 +0800 | 2014-04-26 13:13:43 +0800 +0800 |
| 2014-04-26 13:13:44 +09:00 | 2014-04-26 13:13:44 +0900 +0900 |
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| 2012-08-03 18:31:59.257000000 +0000 UTC | 2012-08-03 18:31:59.257 +0000 UTC |
| 2015-09-30 18:48:56.35272715 +0000 UTC | 2015-09-30 18:48:56.35272715 +0000 UTC |
| 2015-02-18 00:12:00 +0000 GMT | 2015-02-18 00:12:00 +0000 UTC |
| 2015-02-18 00:12:00 +0000 UTC | 2015-02-18 00:12:00 +0000 UTC |
| 2017-07-19 03:21:51+00:00 | 2017-07-19 03:21:51 +0000 UTC |
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| 2014-04-26 | 2014-04-26 00:00:00 +0000 UTC |
| 2014-04 | 2014-04-01 00:00:00 +0000 UTC |
| 2014 | 2014-01-01 00:00:00 +0000 UTC |
| 2014-05-11 08:20:13,787 | 2014-05-11 08:20:13.787 +0000 UTC |
| 20140601 | 2014-06-01 00:00:00 +0000 UTC |
| 1332151919 | 2012-03-19 10:11:59 +0000 UTC |
| 1384216367189 | 2013-11-12 00:32:47.189 +0000 UTC |
+-------------------------------------------------------+----------------------------------------+
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*/
```
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