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GitHub - araddon/dateparse: GoLang Parse any date string without knowing format...
source link: https://github.com/araddon/dateparse
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README.md
Go Date Parser
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 for performance comparison.
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.
// Normal parse. Equivalent Timezone rules as time.Parse() t, err := dateparse.ParseAny("3/1/2014") // Parse with Location, equivalent to time.ParseInLocation() timezone/offset // rules. Using location arg, if timezone/offset info exists in the // datestring, it uses the given location rules for any zone interpretation. // That is, MST means one thing when using America/Denver and something else // in other locations. denverLoc, _ := time.LoadLocation("America/Denver") t, err := dateparse.ParseIn("3/1/2014", denverLoc) // Set Location to time.Local. Same as ParseIn Location but lazily uses // the global time.Local variable for Location argument. denverLoc, _ := time.LoadLocation("America/Denver") // use time.Local global variable to store location time.Local = denverLoc t, err := dateparse.ParseLocal("3/1/2014") // Equivalent to t, err := dateparse.ParseIn("3/1/2014", time.Local)
cli tool for testing dateformats
Extended example
https://github.com/araddon/dateparse/blob/master/example/main.go
package main import ( "flag" "fmt" "time" "github.com/apcera/termtables" "github.com/araddon/dateparse" ) var examples = []string{ "May 8, 2009 5:57:51 PM", "oct 7, 1970", "oct 7, '70", "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", "Tue, 11 Jul 2017 16:28:13 +0200 (CEST)", "Mon, 02 Jan 2006 15:04:05 -0700", "Thu, 4 Jan 2018 17:53:36 +0000", "Mon Aug 10 15:44:11 UTC+0100 2015", "Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)", "12 Feb 2006, 19:17", "12 Feb 2006 19:17", "7 oct 70", "7 oct 1970", "03 February 2013", "2013-Feb-03", // mm/dd/yy "3/31/2014", "03/31/2014", "08/21/71", "8/1/71", "4/8/2014 22:05", "04/08/2014 22:05", "4/8/14 22:05", "04/2/2014 03:00:51", "8/8/1965 12:00:00 AM", "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", "4/02/2014 03:00:51", "03/19/2012 10:11:59", "03/19/2012 10:11:59.3186369", // yyyy/mm/dd "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", // Chinese "2014年04月08日", // yyyy-mm-ddThh "2006-01-02T15:04:05+0000", "2009-08-12T22:15:09-07:00", "2009-08-12T22:15:09", "2009-08-12T22:15:09Z", // yyyy-mm-dd hh:mm:ss "2014-04-26 17:24:37.3186369", "2012-08-03 18:31:59.257000000", "2014-04-26 17:24:37.123", "2013-04-01 22:43", "2013-04-01 22:43:22", "2014-12-16 06:20:00 UTC", "2014-12-16 06:20:00 GMT", "2014-04-26 05:24:37 PM", "2014-04-26 13:13:43 +0800", "2014-04-26 13:13:44 +09:00", "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", "2014-04-26", "2014-04", "2014", "2014-05-11 08:20:13,787", // mm.dd.yy "3.31.2014", "03.31.2014", "08.21.71", // yyyymmdd and similar "20140601", // unix seconds, ms "1332151919", "1384216367189", } var ( timezone = "" ) func main() { 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 } table := termtables.CreateTable() table.AddHeaders("Input", "Parsed, and Output as %v") for _, dateExample := range examples { t, err := dateparse.ParseLocal(dateExample) if err != nil { panic(err.Error()) } table.AddRow(dateExample, fmt.Sprintf("%v", t)) } fmt.Println(table.Render()) } /* +-------------------------------------------------------+----------------------------------------+ | Input | Parsed, and Output as %v | +-------------------------------------------------------+----------------------------------------+ | May 8, 2009 5:57:51 PM | 2009-05-08 17:57:51 +0000 UTC | | oct 7, 1970 | 1970-10-07 00:00:00 +0000 UTC | | oct 7, '70 | 1970-10-07 00:00:00 +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 | | Thu, 4 Jan 2018 17:53:36 +0000 | 2018-01-04 17:53:36 +0000 UTC | | 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 | | 12 Feb 2006 19:17 | 2006-02-12 19:17:00 +0000 UTC | | 7 oct 70 | 1970-10-07 00:00:00 +0000 UTC | | 7 oct 1970 | 1970-10-07 00:00:00 +0000 UTC | | 03 February 2013 | 2013-02-03 00:00:00 +0000 UTC | | 2013-Feb-03 | 2013-02-03 00:00:00 +0000 UTC | | 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 | | 4/8/14 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 | | 2014年04月08日 | 2014-04-08 00:00:00 +0000 UTC | | 2006-01-02T15:04:05+0000 | 2006-01-02 15:04:05 +0000 UTC | | 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 | | 2009-08-12T22:15:09Z | 2009-08-12 22:15:09 +0000 UTC | | 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 | | 2013-04-01 22:43 | 2013-04-01 22:43:00 +0000 UTC | | 2013-04-01 22:43:22 | 2013-04-01 22:43:22 +0000 UTC | | 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 +0000 UTC | | 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 | | 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 | | 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 | | 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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