bridge: improvement on the import resume feature

4 files changed, 2181 insertions, 0 deletions

diff --git a/vendor/github.com/araddon/dateparse/.travis.yml b/vendor/github.com/araddon/dateparse/.travis.yml
new file mode 100644
index 00000000..f071cf95
--- /dev/null
+++ b/vendor/github.com/araddon/dateparse/.travis.yml
@@ -0,0 +1,14 @@
+language: go
+
+go:
+  - 1.10.x
+  - 1.11.x
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - go test -race -coverprofile=coverage.txt -covermode=atomic
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/araddon/dateparse/LICENSE b/vendor/github.com/araddon/dateparse/LICENSE
new file mode 100644
index 00000000..f675ed31
--- /dev/null
+++ b/vendor/github.com/araddon/dateparse/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-2017 Aaron Raddon
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/vendor/github.com/araddon/dateparse/README.md b/vendor/github.com/araddon/dateparse/README.md
new file mode 100644
index 00000000..005e456f
--- /dev/null
+++ b/vendor/github.com/araddon/dateparse/README.md
@@ -0,0 +1,282 @@
+Go Date Parser 
+---------------------------
+
+Parse many date strings 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.
+
+
+[![Code Coverage](https://codecov.io/gh/araddon/dateparse/branch/master/graph/badge.svg)](https://codecov.io/gh/araddon/dateparse)
+[![GoDoc](https://godoc.org/github.com/araddon/dateparse?status.svg)](http://godoc.org/github.com/araddon/dateparse)
+[![Build Status](https://travis-ci.org/araddon/dateparse.svg?branch=master)](https://travis-ci.org/araddon/dateparse)
+[![Go ReportCard](https://goreportcard.com/badge/araddon/dateparse)](https://goreportcard.com/report/araddon/dateparse)
+
+**MM/DD/YYYY VS DD/MM/YYYY** Right now this uses mm/dd/yyyy WHEN ambiguous if this is not desired behavior, use `ParseStrict` which will fail on ambiguous date strings.
+
+**Timezones** The location your server is configured affects the results!  See example or https://play.golang.org/p/IDHRalIyXh and last paragraph here https://golang.org/pkg/time/#Parse.
+
+
+```go
+
+// Normal parse.  Equivalent Timezone rules as time.Parse()
+t, err := dateparse.ParseAny("3/1/2014")
+
+// Parse Strict, error on ambigous mm/dd vs dd/mm dates
+t, err := dateparse.ParseStrict("3/1/2014")
+> returns error 
+
+// Return a string that represents the layout to parse the given date-time.
+layout, err := dateparse.ParseFormat("May 8, 2009 5:57:51 PM")
+> "Jan 2, 2006 3:04:05 PM"
+
+```
+
+cli tool for testing dateformats
+----------------------------------
+
+[Date Parse CLI](https://github.com/araddon/dateparse/blob/master/dateparse)
+
+
+Extended example
+-------------------
+
+https://github.com/araddon/dateparse/blob/master/example/main.go
+
+```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",
+	"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)",
+	"September 17, 2012 10:09am",
+	"September 17, 2012 at 10:09am PST-08",
+	"September 17, 2012, 10:10:09",
+	"October 7, 1970",
+	"October 7th, 1970",
+	"12 Feb 2006, 19:17",
+	"12 Feb 2006 19:17",
+	"7 oct 70",
+	"7 oct 1970",
+	"03 February 2013",
+	"1 July 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 13:13:43 +0800 +08",
+	"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",
+	"2015-02-08 03:02:00 +0300 MSK m=+0.000000001",
+	"2015-02-08 03:02:00.001 +0300 MSK m=+0.000000001",
+	"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",
+	"2014.03",
+	"2014.03.30",
+	//  yyyymmdd and similar
+	"20140601",
+	"20140722105203",
+	// unix seconds, ms, micro, nano
+	"1332151919",
+	"1384216367189",
+	"1384216367111222",
+	"1384216367111222333",
+}
+
+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           |
+| 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           |
+| September 17, 2012 10:09am                            | 2012-09-17 10:09:00 +0000 UTC           |
+| September 17, 2012 at 10:09am PST-08                  | 2012-09-17 10:09:00 -0800 PST           |
+| September 17, 2012, 10:10:09                          | 2012-09-17 10:10:09 +0000 UTC           |
+| October 7, 1970                                       | 1970-10-07 00:00:00 +0000 UTC           |
+| October 7th, 1970                                     | 1970-10-07 00:00:00 +0000 UTC           |
+| 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           |
+| 1 July 2013                                           | 2013-07-01 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 13:13:43 +0800 +08                         | 2014-04-26 13:13:43 +0800 +0800         |
+| 2014-04-26 13:13:44 +09:00                            | 2014-04-26 13:13:44 +0900 +0900         |
+| 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           |
+| 2015-02-08 03:02:00 +0300 MSK m=+0.000000001          | 2015-02-08 03:02:00 +0300 +0300         |
+| 2015-02-08 03:02:00.001 +0300 MSK m=+0.000000001      | 2015-02-08 03:02:00.001 +0300 +0300     |
+| 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           |
+| 2014.03                                               | 2014-03-01 00:00:00 +0000 UTC           |
+| 2014.03.30                                            | 2014-03-30 00:00:00 +0000 UTC           |
+| 20140601                                              | 2014-06-01 00:00:00 +0000 UTC           |
+| 20140722105203                                        | 2014-07-22 10:52:03 +0000 UTC           |
+| 1332151919                                            | 2012-03-19 10:11:59 +0000 UTC           |
+| 1384216367189                                         | 2013-11-12 00:32:47.189 +0000 UTC       |
+| 1384216367111222                                      | 2013-11-12 00:32:47.111222 +0000 UTC    |
+| 1384216367111222333                                   | 2013-11-12 00:32:47.111222333 +0000 UTC |
++-------------------------------------------------------+-----------------------------------------+
+*/
+
+```
diff --git a/vendor/github.com/araddon/dateparse/parseany.go b/vendor/github.com/araddon/dateparse/parseany.go
new file mode 100644
index 00000000..5e66aa6d
--- /dev/null
+++ b/vendor/github.com/araddon/dateparse/parseany.go
@@ -0,0 +1,1864 @@
+// Package dateparse parses date-strings without knowing the format
+// in advance, using a fast lex based approach to eliminate shotgun
+// attempts.  It leans towards US style dates when there is a conflict.
+package dateparse
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+	"unicode"
+	"unicode/utf8"
+)
+
+// func init() {
+// 	gou.SetupLogging("debug")
+// 	gou.SetColorOutput()
+// }
+
+var months = []string{
+	"january",
+	"february",
+	"march",
+	"april",
+	"may",
+	"june",
+	"july",
+	"august",
+	"september",
+	"october",
+	"november",
+	"december",
+}
+
+type dateState uint8
+type timeState uint8
+
+const (
+	dateStart dateState = iota // 0
+	dateDigit
+	dateYearDash
+	dateYearDashAlphaDash
+	dateYearDashDash
+	dateYearDashDashWs // 5
+	dateYearDashDashT
+	dateDigitDash
+	dateDigitDashAlpha
+	dateDigitDashAlphaDash
+	dateDigitDot // 10
+	dateDigitDotDot
+	dateDigitSlash
+	dateDigitChineseYear
+	dateDigitChineseYearWs
+	dateDigitWs // 15
+	dateDigitWsMoYear
+	dateDigitWsMolong
+	dateAlpha
+	dateAlphaWs
+	dateAlphaWsDigit // 20
+	dateAlphaWsDigitMore
+	dateAlphaWsDigitMoreWs
+	dateAlphaWsDigitMoreWsYear
+	dateAlphaWsMonth
+	dateAlphaWsMonthMore
+	dateAlphaWsMonthSuffix
+	dateAlphaWsMore
+	dateAlphaWsAtTime
+	dateAlphaWsAlpha
+	dateAlphaWsAlphaYearmaybe
+	dateAlphaPeriodWsDigit
+	dateWeekdayComma
+	dateWeekdayAbbrevComma
+)
+const (
+	// Time state
+	timeIgnore timeState = iota // 0
+	timeStart
+	timeWs
+	timeWsAlpha
+	timeWsAlphaWs
+	timeWsAlphaZoneOffset // 5
+	timeWsAlphaZoneOffsetWs
+	timeWsAlphaZoneOffsetWsYear
+	timeWsAlphaZoneOffsetWsExtra
+	timeWsAMPMMaybe
+	timeWsAMPM // 10
+	timeWsOffset
+	timeWsOffsetWs // 12
+	timeWsOffsetColonAlpha
+	timeWsOffsetColon
+	timeWsYear // 15
+	timeOffset
+	timeOffsetColon
+	timeAlpha
+	timePeriod
+	timePeriodOffset // 20
+	timePeriodOffsetColon
+	timePeriodOffsetColonWs
+	timePeriodWs
+	timePeriodWsAlpha
+	timePeriodWsOffset // 25
+	timePeriodWsOffsetWs
+	timePeriodWsOffsetWsAlpha
+	timePeriodWsOffsetColon
+	timePeriodWsOffsetColonAlpha
+	timeZ
+	timeZDigit
+)
+
+var (
+	// ErrAmbiguousMMDD for date formats such as 04/02/2014 the mm/dd vs dd/mm are
+	// ambiguous, so it is an error for strict parse rules.
+	ErrAmbiguousMMDD = fmt.Errorf("This date has ambiguous mm/dd vs dd/mm type format")
+)
+
+func unknownErr(datestr string) error {
+	return fmt.Errorf("Could not find format for %q", datestr)
+}
+
+// ParseAny parse an unknown date format, detect the layout.
+// Normal parse.  Equivalent Timezone rules as time.Parse().
+// NOTE:  please see readme on mmdd vs ddmm ambiguous dates.
+func ParseAny(datestr string) (time.Time, error) {
+	p, err := parseTime(datestr, nil)
+	if err != nil {
+		return time.Time{}, err
+	}
+	return p.parse()
+}
+
+// ParseIn 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.
+func ParseIn(datestr string, loc *time.Location) (time.Time, error) {
+	p, err := parseTime(datestr, loc)
+	if err != nil {
+		return time.Time{}, err
+	}
+	return p.parse()
+}
+
+// ParseLocal Given an unknown date format, detect the layout,
+// using time.Local, parse.
+//
+// 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")
+//     time.Local = denverLoc
+//
+//     t, err := dateparse.ParseLocal("3/1/2014")
+//
+// Equivalent to:
+//
+//     t, err := dateparse.ParseIn("3/1/2014", denverLoc)
+//
+func ParseLocal(datestr string) (time.Time, error) {
+	p, err := parseTime(datestr, time.Local)
+	if err != nil {
+		return time.Time{}, err
+	}
+	return p.parse()
+}
+
+// MustParse  parse a date, and panic if it can't be parsed.  Used for testing.
+// Not recommended for most use-cases.
+func MustParse(datestr string) time.Time {
+	p, err := parseTime(datestr, nil)
+	if err != nil {
+		panic(err.Error())
+	}
+	t, err := p.parse()
+	if err != nil {
+		panic(err.Error())
+	}
+	return t
+}
+
+// ParseFormat parse's an unknown date-time string and returns a layout
+// string that can parse this (and exact same format) other date-time strings.
+//
+//     layout, err := dateparse.ParseFormat("2013-02-01 00:00:00")
+//     // layout = "2006-01-02 15:04:05"
+//
+func ParseFormat(datestr string) (string, error) {
+	p, err := parseTime(datestr, nil)
+	if err != nil {
+		return "", err
+	}
+	_, err = p.parse()
+	if err != nil {
+		return "", err
+	}
+	return string(p.format), nil
+}
+
+// ParseStrict parse an unknown date format.  IF the date is ambigous
+// mm/dd vs dd/mm then return an error. These return errors:   3.3.2014 , 8/8/71 etc
+func ParseStrict(datestr string) (time.Time, error) {
+	p, err := parseTime(datestr, nil)
+	if err != nil {
+		return time.Time{}, err
+	}
+	if p.ambiguousMD {
+		return time.Time{}, ErrAmbiguousMMDD
+	}
+	return p.parse()
+}
+
+func parseTime(datestr string, loc *time.Location) (*parser, error) {
+
+	p := newParser(datestr, loc)
+	i := 0
+
+	// General strategy is to read rune by rune through the date looking for
+	// certain hints of what type of date we are dealing with.
+	// Hopefully we only need to read about 5 or 6 bytes before
+	// we figure it out and then attempt a parse
+iterRunes:
+	for ; i < len(datestr); i++ {
+		//r := rune(datestr[i])
+		r, bytesConsumed := utf8.DecodeRuneInString(datestr[i:])
+		if bytesConsumed > 1 {
+			i += (bytesConsumed - 1)
+		}
+
+		//gou.Debugf("i=%d r=%s state=%d   %s", i, string(r), p.stateDate, datestr)
+		switch p.stateDate {
+		case dateStart:
+			if unicode.IsDigit(r) {
+				p.stateDate = dateDigit
+			} else if unicode.IsLetter(r) {
+				p.stateDate = dateAlpha
+			} else {
+				return nil, unknownErr(datestr)
+			}
+		case dateDigit:
+
+			switch r {
+			case '-', '\u2212':
+				// 2006-01-02
+				// 2013-Feb-03
+				// 13-Feb-03
+				// 29-Jun-2016
+				if i == 4 {
+					p.stateDate = dateYearDash
+					p.yeari = 0
+					p.yearlen = i
+					p.moi = i + 1
+					p.set(0, "2006")
+				} else {
+					p.stateDate = dateDigitDash
+				}
+			case '/':
+				// 03/31/2005
+				// 2014/02/24
+				p.stateDate = dateDigitSlash
+				if i == 4 {
+					p.yearlen = i
+					p.moi = i + 1
+					p.setYear()
+				} else {
+					p.ambiguousMD = true
+					if p.preferMonthFirst {
+						if p.molen == 0 {
+							p.molen = i
+							p.setMonth()
+							p.dayi = i + 1
+						}
+					}
+				}
+
+			case '.':
+				// 3.31.2014
+				// 08.21.71
+				// 2014.05
+				p.stateDate = dateDigitDot
+				if i == 4 {
+					p.yearlen = i
+					p.moi = i + 1
+					p.setYear()
+				} else {
+					p.ambiguousMD = true
+					p.moi = 0
+					p.molen = i
+					p.setMonth()
+					p.dayi = i + 1
+				}
+
+			case ' ':
+				// 18 January 2018
+				// 8 January 2018
+				// 8 jan 2018
+				// 02 Jan 2018 23:59
+				// 02 Jan 2018 23:59:34
+				// 12 Feb 2006, 19:17
+				// 12 Feb 2006, 19:17:22
+				p.stateDate = dateDigitWs
+				p.dayi = 0
+				p.daylen = i
+			case '年':
+				// Chinese Year
+				p.stateDate = dateDigitChineseYear
+			case ',':
+				return nil, unknownErr(datestr)
+			default:
+				continue
+			}
+			p.part1Len = i
+
+		case dateYearDash:
+			// dateYearDashDashT
+			//  2006-01-02T15:04:05Z07:00
+			// dateYearDashDashWs
+			//  2013-04-01 22:43:22
+			// dateYearDashAlphaDash
+			//   2013-Feb-03
+			switch r {
+			case '-':
+				p.molen = i - p.moi
+				p.dayi = i + 1
+				p.stateDate = dateYearDashDash
+				p.setMonth()
+			default:
+				if unicode.IsLetter(r) {
+					p.stateDate = dateYearDashAlphaDash
+				}
+			}
+
+		case dateYearDashDash:
+			// dateYearDashDashT
+			//  2006-01-02T15:04:05Z07:00
+			// dateYearDashDashWs
+			//  2013-04-01 22:43:22
+			switch r {
+			case ' ':
+				p.daylen = i - p.dayi
+				p.stateDate = dateYearDashDashWs
+				p.stateTime = timeStart
+				p.setDay()
+				break iterRunes
+			case 'T':
+				p.daylen = i - p.dayi
+				p.stateDate = dateYearDashDashT
+				p.stateTime = timeStart
+				p.setDay()
+				break iterRunes
+			}
+		case dateYearDashAlphaDash:
+			// 2013-Feb-03
+			switch r {
+			case '-':
+				p.molen = i - p.moi
+				p.set(p.moi, "Jan")
+				p.dayi = i + 1
+			}
+		case dateDigitDash:
+			// 13-Feb-03
+			// 29-Jun-2016
+			if unicode.IsLetter(r) {
+				p.stateDate = dateDigitDashAlpha
+				p.moi = i
+			} else {
+				return nil, unknownErr(datestr)
+			}
+		case dateDigitDashAlpha:
+			// 13-Feb-03
+			// 28-Feb-03
+			// 29-Jun-2016
+			switch r {
+			case '-':
+				p.molen = i - p.moi
+				p.set(p.moi, "Jan")
+				p.yeari = i + 1
+				p.stateDate = dateDigitDashAlphaDash
+			}
+
+		case dateDigitDashAlphaDash:
+			// 13-Feb-03   ambiguous
+			// 28-Feb-03   ambiguous
+			// 29-Jun-2016
+			switch r {
+			case ' ':
+				// we need to find if this was 4 digits, aka year
+				// or 2 digits which makes it ambiguous year/day
+				length := i - (p.moi + p.molen + 1)
+				if length == 4 {
+					p.yearlen = 4
+					p.set(p.yeari, "2006")
+					// We now also know that part1 was the day
+					p.dayi = 0
+					p.daylen = p.part1Len
+					p.setDay()
+				} else if length == 2 {
+					// We have no idea if this is
+					// yy-mon-dd   OR  dd-mon-yy
+					//
+					// We are going to ASSUME (bad, bad) that it is dd-mon-yy  which is a horible assumption
+					p.ambiguousMD = true
+					p.yearlen = 2
+					p.set(p.yeari, "06")
+					// We now also know that part1 was the day
+					p.dayi = 0
+					p.daylen = p.part1Len
+					p.setDay()
+				}
+				p.stateTime = timeStart
+				break iterRunes
+			}
+
+		case dateDigitSlash:
+			// 2014/07/10 06:55:38.156283
+			// 03/19/2012 10:11:59
+			// 04/2/2014 03:00:37
+			// 3/1/2012 10:11:59
+			// 4/8/2014 22:05
+			// 3/1/2014
+			// 10/13/2014
+			// 01/02/2006
+			// 1/2/06
+
+			switch r {
+			case ' ':
+				p.stateTime = timeStart
+				if p.yearlen == 0 {
+					p.yearlen = i - p.yeari
+					p.setYear()
+				} else if p.daylen == 0 {
+					p.daylen = i - p.dayi
+					p.setDay()
+				}
+				break iterRunes
+			case '/':
+				if p.yearlen > 0 {
+					// 2014/07/10 06:55:38.156283
+					if p.molen == 0 {
+						p.molen = i - p.moi
+						p.setMonth()
+						p.dayi = i + 1
+					}
+				} else if p.preferMonthFirst {
+					if p.daylen == 0 {
+						p.daylen = i - p.dayi
+						p.setDay()
+						p.yeari = i + 1
+					}
+				}
+			}
+
+		case dateDigitWs:
+			// 18 January 2018
+			// 8 January 2018
+			// 8 jan 2018
+			// 1 jan 18
+			// 02 Jan 2018 23:59
+			// 02 Jan 2018 23:59:34
+			// 12 Feb 2006, 19:17
+			// 12 Feb 2006, 19:17:22
+			switch r {
+			case ' ':
+				p.yeari = i + 1
+				//p.yearlen = 4
+				p.dayi = 0
+				p.daylen = p.part1Len
+				p.setDay()
+				p.stateTime = timeStart
+				if i > p.daylen+len(" Sep") { //  November etc
+					// If len greather than space + 3 it must be full month
+					p.stateDate = dateDigitWsMolong
+				} else {
+					// If len=3, the might be Feb or May?  Ie ambigous abbreviated but
+					// we can parse may with either.  BUT, that means the
+					// format may not be correct?
+					// mo := strings.ToLower(datestr[p.daylen+1 : i])
+					p.moi = p.daylen + 1
+					p.molen = i - p.moi
+					p.set(p.moi, "Jan")
+					p.stateDate = dateDigitWsMoYear
+				}
+			}
+
+		case dateDigitWsMoYear:
+			// 8 jan 2018
+			// 02 Jan 2018 23:59
+			// 02 Jan 2018 23:59:34
+			// 12 Feb 2006, 19:17
+			// 12 Feb 2006, 19:17:22
+			switch r {
+			case ',':
+				p.yearlen = i - p.yeari
+				p.setYear()
+				i++
+				break iterRunes
+			case ' ':
+				p.yearlen = i - p.yeari
+				p.setYear()
+				break iterRunes
+			}
+		case dateDigitWsMolong:
+			// 18 January 2018
+			// 8 January 2018
+
+		case dateDigitChineseYear:
+			// dateDigitChineseYear
+			//   2014年04月08日
+			//               weekday  %Y年%m月%e日 %A %I:%M %p
+			// 2013年07月18日 星期四 10:27 上午
+			if r == ' ' {
+				p.stateDate = dateDigitChineseYearWs
+				break
+			}
+		case dateDigitDot:
+			// This is the 2nd period
+			// 3.31.2014
+			// 08.21.71
+			// 2014.05
+			// 2018.09.30
+			if r == '.' {
+				if p.moi == 0 {
+					// 3.31.2014
+					p.daylen = i - p.dayi
+					p.yeari = i + 1
+					p.setDay()
+					p.stateDate = dateDigitDotDot
+				} else {
+					// 2018.09.30
+					//p.molen = 2
+					p.molen = i - p.moi
+					p.dayi = i + 1
+					p.setMonth()
+					p.stateDate = dateDigitDotDot
+				}
+			}
+		case dateDigitDotDot:
+			// iterate all the way through
+		case dateAlpha:
+			// dateAlphaWS
+			//  Mon Jan _2 15:04:05 2006
+			//  Mon Jan _2 15:04:05 MST 2006
+			//  Mon Jan 02 15:04:05 -0700 2006
+			//  Mon Aug 10 15:44:11 UTC+0100 2015
+			//  Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)
+			//  dateAlphaWSDigit
+			//    May 8, 2009 5:57:51 PM
+			//    oct 1, 1970
+			//  dateAlphaWsMonth
+			//    April 8, 2009
+			//  dateAlphaWsMore
+			//    dateAlphaWsAtTime
+			//      January 02, 2006 at 3:04pm MST-07
+			//
+			//  dateAlphaPeriodWsDigit
+			//    oct. 1, 1970
+			// dateWeekdayComma
+			//   Monday, 02 Jan 2006 15:04:05 MST
+			//   Monday, 02-Jan-06 15:04:05 MST
+			//   Monday, 02 Jan 2006 15:04:05 -0700
+			//   Monday, 02 Jan 2006 15:04:05 +0100
+			// dateWeekdayAbbrevComma
+			//   Mon, 02 Jan 2006 15:04:05 MST
+			//   Mon, 02 Jan 2006 15:04:05 -0700
+			//   Thu, 13 Jul 2017 08:58:40 +0100
+			//   Tue, 11 Jul 2017 16:28:13 +0200 (CEST)
+			//   Mon, 02-Jan-06 15:04:05 MST
+			switch {
+			case r == ' ':
+				//      X
+				// April 8, 2009
+				if i > 3 {
+					// Check to see if the alpha is name of month?  or Day?
+					month := strings.ToLower(datestr[0:i])
+					if isMonthFull(month) {
+						p.fullMonth = month
+						// len(" 31, 2018")   = 9
+						if len(datestr[i:]) < 10 {
+							// April 8, 2009
+							p.stateDate = dateAlphaWsMonth
+						} else {
+							p.stateDate = dateAlphaWsMore
+						}
+						p.dayi = i + 1
+						break
+					}
+
+				} else {
+					// This is possibly ambiguous?  May will parse as either though.
+					// So, it could return in-correct format.
+					// May 05, 2005, 05:05:05
+					// May 05 2005, 05:05:05
+					// Jul 05, 2005, 05:05:05
+					p.stateDate = dateAlphaWs
+				}
+
+			case r == ',':
+				// Mon, 02 Jan 2006
+				// p.moi = 0
+				// p.molen = i
+				if i == 3 {
+					p.stateDate = dateWeekdayAbbrevComma
+					p.set(0, "Mon")
+				} else {
+					p.stateDate = dateWeekdayComma
+					p.skip = i + 2
+					i++
+					// TODO:  lets just make this "skip" as we don't need
+					// the mon, monday, they are all superfelous and not needed
+					// just lay down the skip, no need to fill and then skip
+				}
+			case r == '.':
+				// sept. 28, 2017
+				// jan. 28, 2017
+				p.stateDate = dateAlphaPeriodWsDigit
+				if i == 3 {
+					p.molen = i
+					p.set(0, "Jan")
+				} else if i == 4 {
+					// gross
+					datestr = datestr[0:i-1] + datestr[i:]
+					return parseTime(datestr, loc)
+				} else {
+					return nil, unknownErr(datestr)
+				}
+			}
+
+		case dateAlphaWs:
+			// dateAlphaWsAlpha
+			//   Mon Jan _2 15:04:05 2006
+			//   Mon Jan _2 15:04:05 MST 2006
+			//   Mon Jan 02 15:04:05 -0700 2006
+			//   Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)
+			//   Mon Aug 10 15:44:11 UTC+0100 2015
+			//  dateAlphaWsDigit
+			//    May 8, 2009 5:57:51 PM
+			//    May 8 2009 5:57:51 PM
+			//    oct 1, 1970
+			//    oct 7, '70
+			switch {
+			case unicode.IsLetter(r):
+				p.set(0, "Mon")
+				p.stateDate = dateAlphaWsAlpha
+				p.set(i, "Jan")
+			case unicode.IsDigit(r):
+				p.set(0, "Jan")
+				p.stateDate = dateAlphaWsDigit
+				p.dayi = i
+			}
+
+		case dateAlphaWsDigit:
+			// May 8, 2009 5:57:51 PM
+			// May 8 2009 5:57:51 PM
+			// oct 1, 1970
+			// oct 7, '70
+			// oct. 7, 1970
+			if r == ',' {
+				p.daylen = i - p.dayi
+				p.setDay()
+				p.stateDate = dateAlphaWsDigitMore
+			} else if r == ' ' {
+				p.daylen = i - p.dayi
+				p.setDay()
+				p.yeari = i + 1
+				p.stateDate = dateAlphaWsDigitMoreWs
+			} else if unicode.IsLetter(r) {
+				p.stateDate = dateAlphaWsMonthSuffix
+				i--
+			}
+		case dateAlphaWsDigitMore:
+			//       x
+			// May 8, 2009 5:57:51 PM
+			// May 05, 2005, 05:05:05
+			// May 05 2005, 05:05:05
+			// oct 1, 1970
+			// oct 7, '70
+			if r == ' ' {
+				p.yeari = i + 1
+				p.stateDate = dateAlphaWsDigitMoreWs
+			}
+		case dateAlphaWsDigitMoreWs:
+			//            x
+			// May 8, 2009 5:57:51 PM
+			// May 05, 2005, 05:05:05
+			// oct 1, 1970
+			// oct 7, '70
+			switch r {
+			case '\'':
+				p.yeari = i + 1
+			case ' ', ',':
+				//            x
+				// May 8, 2009 5:57:51 PM
+				//            x
+				// May 8, 2009, 5:57:51 PM
+				p.stateDate = dateAlphaWsDigitMoreWsYear
+				p.yearlen = i - p.yeari
+				p.setYear()
+				p.stateTime = timeStart
+				break iterRunes
+			}
+
+		case dateAlphaWsAlpha:
+			// Mon Jan _2 15:04:05 2006
+			// Mon Jan 02 15:04:05 -0700 2006
+			// Mon Jan _2 15:04:05 MST 2006
+			// Mon Aug 10 15:44:11 UTC+0100 2015
+			// Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)
+			if r == ' ' {
+				if p.dayi > 0 {
+					p.daylen = i - p.dayi
+					p.setDay()
+					p.yeari = i + 1
+					p.stateDate = dateAlphaWsAlphaYearmaybe
+					p.stateTime = timeStart
+				}
+			} else if unicode.IsDigit(r) {
+				if p.dayi == 0 {
+					p.dayi = i
+				}
+			}
+
+		case dateAlphaWsAlphaYearmaybe:
+			//            x
+			// Mon Jan _2 15:04:05 2006
+			// Fri Jul 03 2015 18:04:07 GMT+0100 (GMT Daylight Time)
+			if r == ':' {
+				i = i - 3
+				p.stateDate = dateAlphaWsAlpha
+				p.yeari = 0
+				break iterRunes
+			} else if r == ' ' {
+				// must be year format, not 15:04
+				p.yearlen = i - p.yeari
+				p.setYear()
+				break iterRunes
+			}
+
+		case dateAlphaWsMonth:
+			// April 8, 2009
+			// April 8 2009
+			switch r {
+			case ' ', ',':
+				//       x
+				// June 8, 2009
+				//       x
+				// June 8 2009
+				if p.daylen == 0 {
+					p.daylen = i - p.dayi
+					p.setDay()
+				}
+			case 's', 'S', 'r', 'R', 't', 'T', 'n', 'N':
+				// st, rd, nd, st
+				i--
+				p.stateDate = dateAlphaWsMonthSuffix
+			default:
+				if p.daylen > 0 && p.yeari == 0 {
+					p.yeari = i
+				}
+			}
+		case dateAlphaWsMonthMore:
+			//                  X
+			// January 02, 2006, 15:04:05
+			// January 02 2006, 15:04:05
+			// January 02, 2006 15:04:05
+			// January 02 2006 15:04:05
+			switch r {
+			case ',':
+				p.yearlen = i - p.yeari
+				p.setYear()
+				p.stateTime = timeStart
+				i++
+				break iterRunes
+			case ' ':
+				p.yearlen = i - p.yeari
+				p.setYear()
+				p.stateTime = timeStart
+				break iterRunes
+			}
+		case dateAlphaWsMonthSuffix:
+			//        x
+			// April 8th, 2009
+			// April 8th 2009
+			switch r {
+			case 't', 'T':
+				if p.nextIs(i, 'h') || p.nextIs(i, 'H') {
+					if len(datestr) > i+2 {
+						return parseTime(fmt.Sprintf("%s%s", p.datestr[0:i], p.datestr[i+2:]), loc)
+					}
+				}
+			case 'n', 'N':
+				if p.nextIs(i, 'd') || p.nextIs(i, 'D') {
+					if len(datestr) > i+2 {
+						return parseTime(fmt.Sprintf("%s%s", p.datestr[0:i], p.datestr[i+2:]), loc)
+					}
+				}
+			case 's', 'S':
+				if p.nextIs(i, 't') || p.nextIs(i, 'T') {
+					if len(datestr) > i+2 {
+						return parseTime(fmt.Sprintf("%s%s", p.datestr[0:i], p.datestr[i+2:]), loc)
+					}
+				}
+			case 'r', 'R':
+				if p.nextIs(i, 'd') || p.nextIs(i, 'D') {
+					if len(datestr) > i+2 {
+						return parseTime(fmt.Sprintf("%s%s", p.datestr[0:i], p.datestr[i+2:]), loc)
+					}
+				}
+			}
+		case dateAlphaWsMore:
+			// January 02, 2006, 15:04:05
+			// January 02 2006, 15:04:05
+			// January 2nd, 2006, 15:04:05
+			// January 2nd 2006, 15:04:05
+			// September 17, 2012 at 5:00pm UTC-05
+			switch {
+			case r == ',':
+				//           x
+				// January 02, 2006, 15:04:05
+				if p.nextIs(i, ' ') {
+					p.daylen = i - p.dayi
+					p.setDay()
+					p.yeari = i + 2
+					p.stateDate = dateAlphaWsMonthMore
+					i++
+				}
+
+			case r == ' ':
+				//           x
+				// January 02 2006, 15:04:05
+				p.daylen = i - p.dayi
+				p.setDay()
+				p.yeari = i + 1
+				p.stateDate = dateAlphaWsMonthMore
+			case unicode.IsDigit(r):
+				//         XX
+				// January 02, 2006, 15:04:05
+				continue
+			case unicode.IsLetter(r):
+				//          X
+				// January 2nd, 2006, 15:04:05
+				p.daylen = i - p.dayi
+				p.setDay()
+				p.stateDate = dateAlphaWsMonthSuffix
+				i--
+			}
+
+		case dateAlphaPeriodWsDigit:
+			//    oct. 7, '70
+			switch {
+			case r == ' ':
+				// continue
+			case unicode.IsDigit(r):
+				p.stateDate = dateAlphaWsDigit
+				p.dayi = i
+			default:
+				return p, unknownErr(datestr)
+			}
+		case dateWeekdayComma:
+			// Monday, 02 Jan 2006 15:04:05 MST
+			// Monday, 02 Jan 2006 15:04:05 -0700
+			// Monday, 02 Jan 2006 15:04:05 +0100
+			// Monday, 02-Jan-06 15:04:05 MST
+			if p.dayi == 0 {
+				p.dayi = i
+			}
+			switch r {
+			case ' ', '-':
+				if p.moi == 0 {
+					p.moi = i + 1
+					p.daylen = i - p.dayi
+					p.setDay()
+				} else if p.yeari == 0 {
+					p.yeari = i + 1
+					p.molen = i - p.moi
+					p.set(p.moi, "Jan")
+				} else {
+					p.stateTime = timeStart
+					break iterRunes
+				}
+			}
+		case dateWeekdayAbbrevComma:
+			// Mon, 02 Jan 2006 15:04:05 MST
+			// Mon, 02 Jan 2006 15:04:05 -0700
+			// Thu, 13 Jul 2017 08:58:40 +0100
+			// Thu, 4 Jan 2018 17:53:36 +0000
+			// Tue, 11 Jul 2017 16:28:13 +0200 (CEST)
+			// Mon, 02-Jan-06 15:04:05 MST
+			switch r {
+			case ' ', '-':
+				if p.dayi == 0 {
+					p.dayi = i + 1
+				} else if p.moi == 0 {
+					p.daylen = i - p.dayi
+					p.setDay()
+					p.moi = i + 1
+				} else if p.yeari == 0 {
+					p.molen = i - p.moi
+					p.set(p.moi, "Jan")
+					p.yeari = i + 1
+				} else {
+					p.yearlen = i - p.yeari
+					p.setYear()
+					p.stateTime = timeStart
+					break iterRunes
+				}
+			}
+
+		default:
+			break iterRunes
+		}
+	}
+	p.coalesceDate(i)
+	if p.stateTime == timeStart {
+		// increment first one, since the i++ occurs at end of loop
+		if i < len(p.datestr) {
+			i++
+		}
+		// ensure we skip any whitespace prefix
+		for ; i < len(datestr); i++ {
+			r := rune(datestr[i])
+			if r != ' ' {
+				break
+			}
+		}
+
+	iterTimeRunes:
+		for ; i < len(datestr); i++ {
+			r := rune(datestr[i])
+
+			//gou.Debugf("%d %s %d iterTimeRunes  %s %s", i, string(r), p.stateTime, p.ds(), p.ts())
+
+			switch p.stateTime {
+			case timeStart:
+				// 22:43:22
+				// 22:43
+				// timeComma
+				//   08:20:13,787
+				// timeWs
+				//   05:24:37 PM
+				//   06:20:00 UTC
+				//   06:20:00 UTC-05
+				//   00:12:00 +0000 UTC
+				//   22:18:00 +0000 UTC m=+0.000000001
+				//   15:04:05 -0700
+				//   15:04:05 -07:00
+				//   15:04:05 2008
+				// timeOffset
+				//   03:21:51+00:00
+				//   19:55:00+0100
+				// timePeriod
+				//   17:24:37.3186369
+				//   00:07:31.945167
+				//   18:31:59.257000000
+				//   00:00:00.000
+				//   timePeriodOffset
+				//     19:55:00.799+0100
+				//     timePeriodOffsetColon
+				//       15:04:05.999-07:00
+				//   timePeriodWs
+				//     timePeriodWsOffset
+				//       00:07:31.945167 +0000
+				//       00:00:00.000 +0000
+				//     timePeriodWsOffsetAlpha
+				//       00:07:31.945167 +0000 UTC
+				//       22:18:00.001 +0000 UTC m=+0.000000001
+				//       00:00:00.000 +0000 UTC
+				//     timePeriodWsAlpha
+				//       06:20:00.000 UTC
+				if p.houri == 0 {
+					p.houri = i
+				}
+				switch r {
+				case ',':
+					// hm, lets just swap out comma for period.  for some reason go
+					// won't parse it.
+					// 2014-05-11 08:20:13,787
+					ds := []byte(p.datestr)
+					ds[i] = '.'
+					return parseTime(string(ds), loc)
+				case '-', '+':
+					//   03:21:51+00:00
+					p.stateTime = timeOffset
+					if p.seci == 0 {
+						// 22:18+0530
+						p.minlen = i - p.mini
+					} else {
+						p.seclen = i - p.seci
+					}
+					p.offseti = i
+				case '.':
+					p.stateTime = timePeriod
+					p.seclen = i - p.seci
+					p.msi = i + 1
+				case 'Z':
+					p.stateTime = timeZ
+					if p.seci == 0 {
+						p.minlen = i - p.mini
+					} else {
+						p.seclen = i - p.seci
+					}
+				case 'a', 'A':
+					if p.nextIs(i, 't') || p.nextIs(i, 'T') {
+						//                    x
+						// September 17, 2012 at 5:00pm UTC-05
+						i++ // skip t
+						if p.nextIs(i, ' ') {
+							//                      x
+							// September 17, 2012 at 5:00pm UTC-05
+							i++         // skip '
+							p.houri = 0 // reset hour
+						}
+					} else {
+						switch {
+						case r == 'a' && p.nextIs(i, 'm'):
+							p.coalesceTime(i)
+							p.set(i, "am")
+						case r == 'A' && p.nextIs(i, 'M'):
+							p.coalesceTime(i)
+							p.set(i, "PM")
+						}
+					}
+
+				case 'p', 'P':
+					// Could be AM/PM
+					switch {
+					case r == 'p' && p.nextIs(i, 'm'):
+						p.coalesceTime(i)
+						p.set(i, "pm")
+					case r == 'P' && p.nextIs(i, 'M'):
+						p.coalesceTime(i)
+						p.set(i, "PM")
+					}
+				case ' ':
+					p.coalesceTime(i)
+					p.stateTime = timeWs
+				case ':':
+					if p.mini == 0 {
+						p.mini = i + 1
+						p.hourlen = i - p.houri
+					} else if p.seci == 0 {
+						p.seci = i + 1
+						p.minlen = i - p.mini
+					}
+				}
+			case timeOffset:
+				// 19:55:00+0100
+				// timeOffsetColon
+				//   15:04:05+07:00
+				//   15:04:05-07:00
+				if r == ':' {
+					p.stateTime = timeOffsetColon
+				}
+			case timeWs:
+				// timeWsAlpha
+				//   06:20:00 UTC
+				//   06:20:00 UTC-05
+				//   15:44:11 UTC+0100 2015
+				//   18:04:07 GMT+0100 (GMT Daylight Time)
+				//   17:57:51 MST 2009
+				//   timeWsAMPMMaybe
+				//     05:24:37 PM
+				// timeWsOffset
+				//   15:04:05 -0700
+				//   00:12:00 +0000 UTC
+				//   timeWsOffsetColon
+				//     15:04:05 -07:00
+				//     17:57:51 -0700 2009
+				//     timeWsOffsetColonAlpha
+				//       00:12:00 +00:00 UTC
+				// timeWsYear
+				//     00:12:00 2008
+				// timeZ
+				//   15:04:05.99Z
+				switch r {
+				case 'A', 'P':
+					// Could be AM/PM or could be PST or similar
+					p.tzi = i
+					p.stateTime = timeWsAMPMMaybe
+				case '+', '-':
+					p.offseti = i
+					p.stateTime = timeWsOffset
+				default:
+					if unicode.IsLetter(r) {
+						// 06:20:00 UTC
+						// 06:20:00 UTC-05
+						// 15:44:11 UTC+0100 2015
+						// 17:57:51 MST 2009
+						p.tzi = i
+						p.stateTime = timeWsAlpha
+						//break iterTimeRunes
+					} else if unicode.IsDigit(r) {
+						// 00:12:00 2008
+						p.stateTime = timeWsYear
+						p.yeari = i
+					}
+				}
+			case timeWsAlpha:
+				// 06:20:00 UTC
+				// 06:20:00 UTC-05
+				// timeWsAlphaWs
+				//   17:57:51 MST 2009
+				// timeWsAlphaZoneOffset
+				// timeWsAlphaZoneOffsetWs
+				//   timeWsAlphaZoneOffsetWsExtra
+				//     18:04:07 GMT+0100 (GMT Daylight Time)
+				//   timeWsAlphaZoneOffsetWsYear
+				//     15:44:11 UTC+0100 2015
+				switch r {
+				case '+', '-':
+					p.tzlen = i - p.tzi
+					if p.tzlen == 4 {
+						p.set(p.tzi, " MST")
+					} else if p.tzlen == 3 {
+						p.set(p.tzi, "MST")
+					}
+					p.stateTime = timeWsAlphaZoneOffset
+					p.offseti = i
+				case ' ':
+					// 17:57:51 MST 2009
+					p.tzlen = i - p.tzi
+					if p.tzlen == 4 {
+						p.set(p.tzi, " MST")
+					} else if p.tzlen == 3 {
+						p.set(p.tzi, "MST")
+					}
+					p.stateTime = timeWsAlphaWs
+					p.yeari = i + 1
+				}
+			case timeWsAlphaWs:
+				//   17:57:51 MST 2009
+
+			case timeWsAlphaZoneOffset:
+				// 06:20:00 UTC-05
+				// timeWsAlphaZoneOffset
+				// timeWsAlphaZoneOffsetWs
+				//   timeWsAlphaZoneOffsetWsExtra
+				//     18:04:07 GMT+0100 (GMT Daylight Time)
+				//   timeWsAlphaZoneOffsetWsYear
+				//     15:44:11 UTC+0100 2015
+				switch r {
+				case ' ':
+					p.set(p.offseti, "-0700")
+					p.yeari = i + 1
+					p.stateTime = timeWsAlphaZoneOffsetWs
+				}
+			case timeWsAlphaZoneOffsetWs:
+				// timeWsAlphaZoneOffsetWs
+				//   timeWsAlphaZoneOffsetWsExtra
+				//     18:04:07 GMT+0100 (GMT Daylight Time)
+				//   timeWsAlphaZoneOffsetWsYear
+				//     15:44:11 UTC+0100 2015
+				if unicode.IsDigit(r) {
+					p.stateTime = timeWsAlphaZoneOffsetWsYear
+				} else {
+					p.extra = i - 1
+					p.stateTime = timeWsAlphaZoneOffsetWsExtra
+				}
+			case timeWsAlphaZoneOffsetWsYear:
+				// 15:44:11 UTC+0100 2015
+				if unicode.IsDigit(r) {
+					p.yearlen = i - p.yeari + 1
+					if p.yearlen == 4 {
+						p.setYear()
+					}
+				}
+			case timeWsAMPMMaybe:
+				// timeWsAMPMMaybe
+				//   timeWsAMPM
+				//     05:24:37 PM
+				//   timeWsAlpha
+				//     00:12:00 PST
+				//     15:44:11 UTC+0100 2015
+				if r == 'M' {
+					//return parse("2006-01-02 03:04:05 PM", datestr, loc)
+					p.stateTime = timeWsAMPM
+					p.set(i-1, "PM")
+					if p.hourlen == 2 {
+						p.set(p.houri, "03")
+					} else if p.hourlen == 1 {
+						p.set(p.houri, "3")
+					}
+				} else {
+					p.stateTime = timeWsAlpha
+				}
+
+			case timeWsOffset:
+				// timeWsOffset
+				//   15:04:05 -0700
+				//   timeWsOffsetWsOffset
+				//     17:57:51 -0700 -07
+				//   timeWsOffsetWs
+				//     17:57:51 -0700 2009
+				//     00:12:00 +0000 UTC
+				//   timeWsOffsetColon
+				//     15:04:05 -07:00
+				//     timeWsOffsetColonAlpha
+				//       00:12:00 +00:00 UTC
+				switch r {
+				case ':':
+					p.stateTime = timeWsOffsetColon
+				case ' ':
+					p.set(p.offseti, "-0700")
+					p.yeari = i + 1
+					p.stateTime = timeWsOffsetWs
+				}
+			case timeWsOffsetWs:
+				// 17:57:51 -0700 2009
+				// 00:12:00 +0000 UTC
+				// 22:18:00.001 +0000 UTC m=+0.000000001
+				// w Extra
+				//   17:57:51 -0700 -07
+				switch r {
+				case '=':
+					// eff you golang
+					if datestr[i-1] == 'm' {
+						p.extra = i - 2
+						p.trimExtra()
+						break
+					}
+				case '+', '-':
+					// This really doesn't seem valid, but for some reason when round-tripping a go date
+					// their is an extra +03 printed out.  seems like go bug to me, but, parsing anyway.
+					// 00:00:00 +0300 +03
+					// 00:00:00 +0300 +0300
+					p.extra = i - 1
+					p.stateTime = timeWsOffset
+					p.trimExtra()
+					break
+				default:
+					switch {
+					case unicode.IsDigit(r):
+						p.yearlen = i - p.yeari + 1
+						if p.yearlen == 4 {
+							p.setYear()
+						}
+					case unicode.IsLetter(r):
+						if p.tzi == 0 {
+							p.tzi = i
+						}
+					}
+				}
+
+			case timeWsOffsetColon:
+				// timeWsOffsetColon
+				//   15:04:05 -07:00
+				//   timeWsOffsetColonAlpha
+				//     2015-02-18 00:12:00 +00:00 UTC
+				if unicode.IsLetter(r) {
+					// 2015-02-18 00:12:00 +00:00 UTC
+					p.stateTime = timeWsOffsetColonAlpha
+					break iterTimeRunes
+				}
+			case timePeriod:
+				// 15:04:05.999999999+07:00
+				// 15:04:05.999999999-07:00
+				// 15:04:05.999999+07:00
+				// 15:04:05.999999-07:00
+				// 15:04:05.999+07:00
+				// 15:04:05.999-07:00
+				// timePeriod
+				//   17:24:37.3186369
+				//   00:07:31.945167
+				//   18:31:59.257000000
+				//   00:00:00.000
+				//   timePeriodOffset
+				//     19:55:00.799+0100
+				//     timePeriodOffsetColon
+				//       15:04:05.999-07:00
+				//   timePeriodWs
+				//     timePeriodWsOffset
+				//       00:07:31.945167 +0000
+				//       00:00:00.000 +0000
+				//       With Extra
+				//         00:00:00.000 +0300 +03
+				//     timePeriodWsOffsetAlpha
+				//       00:07:31.945167 +0000 UTC
+				//       00:00:00.000 +0000 UTC
+				//       22:18:00.001 +0000 UTC m=+0.000000001
+				//     timePeriodWsAlpha
+				//       06:20:00.000 UTC
+				switch r {
+				case ' ':
+					p.mslen = i - p.msi
+					p.stateTime = timePeriodWs
+				case '+', '-':
+					// This really shouldn't happen
+					p.mslen = i - p.msi
+					p.offseti = i
+					p.stateTime = timePeriodOffset
+				default:
+					if unicode.IsLetter(r) {
+						// 06:20:00.000 UTC
+						p.mslen = i - p.msi
+						p.stateTime = timePeriodWsAlpha
+					}
+				}
+			case timePeriodOffset:
+				// timePeriodOffset
+				//   19:55:00.799+0100
+				//   timePeriodOffsetColon
+				//     15:04:05.999-07:00
+				//     13:31:51.999-07:00 MST
+				if r == ':' {
+					p.stateTime = timePeriodOffsetColon
+				}
+			case timePeriodOffsetColon:
+				// timePeriodOffset
+				//   timePeriodOffsetColon
+				//     15:04:05.999-07:00
+				//     13:31:51.999 -07:00 MST
+				switch r {
+				case ' ':
+					p.set(p.offseti, "-07:00")
+					p.stateTime = timePeriodOffsetColonWs
+					p.tzi = i + 1
+				}
+			case timePeriodOffsetColonWs:
+				// continue
+			case timePeriodWs:
+				// timePeriodWs
+				//   timePeriodWsOffset
+				//     00:07:31.945167 +0000
+				//     00:00:00.000 +0000
+				//   timePeriodWsOffsetAlpha
+				//     00:07:31.945167 +0000 UTC
+				//     00:00:00.000 +0000 UTC
+				//   timePeriodWsOffsetColon
+				//     13:31:51.999 -07:00 MST
+				//   timePeriodWsAlpha
+				//     06:20:00.000 UTC
+				if p.offseti == 0 {
+					p.offseti = i
+				}
+				switch r {
+				case '+', '-':
+					p.mslen = i - p.msi - 1
+					p.stateTime = timePeriodWsOffset
+				default:
+					if unicode.IsLetter(r) {
+						//     00:07:31.945167 +0000 UTC
+						//     00:00:00.000 +0000 UTC
+						p.stateTime = timePeriodWsOffsetWsAlpha
+						break iterTimeRunes
+					}
+				}
+
+			case timePeriodWsOffset:
+				// timePeriodWs
+				//   timePeriodWsOffset
+				//     00:07:31.945167 +0000
+				//     00:00:00.000 +0000
+				//     With Extra
+				//       00:00:00.000 +0300 +03
+				//   timePeriodWsOffsetAlpha
+				//     00:07:31.945167 +0000 UTC
+				//     00:00:00.000 +0000 UTC
+				//     03:02:00.001 +0300 MSK m=+0.000000001
+				//   timePeriodWsOffsetColon
+				//     13:31:51.999 -07:00 MST
+				//   timePeriodWsAlpha
+				//     06:20:00.000 UTC
+				switch r {
+				case ':':
+					p.stateTime = timePeriodWsOffsetColon
+				case ' ':
+					p.set(p.offseti, "-0700")
+				case '+', '-':
+					// This really doesn't seem valid, but for some reason when round-tripping a go date
+					// their is an extra +03 printed out.  seems like go bug to me, but, parsing anyway.
+					// 00:00:00.000 +0300 +03
+					// 00:00:00.000 +0300 +0300
+					p.extra = i - 1
+					p.trimExtra()
+					break
+				default:
+					if unicode.IsLetter(r) {
+						// 00:07:31.945167 +0000 UTC
+						// 00:00:00.000 +0000 UTC
+						// 03:02:00.001 +0300 MSK m=+0.000000001
+						p.stateTime = timePeriodWsOffsetWsAlpha
+					}
+				}
+			case timePeriodWsOffsetWsAlpha:
+				// 03:02:00.001 +0300 MSK m=+0.000000001
+				// eff you golang
+				if r == '=' && datestr[i-1] == 'm' {
+					p.extra = i - 2
+					p.trimExtra()
+					break
+				}
+
+			case timePeriodWsOffsetColon:
+				// 13:31:51.999 -07:00 MST
+				switch r {
+				case ' ':
+					p.set(p.offseti, "-07:00")
+				default:
+					if unicode.IsLetter(r) {
+						// 13:31:51.999 -07:00 MST
+						p.tzi = i
+						p.stateTime = timePeriodWsOffsetColonAlpha
+					}
+				}
+			case timePeriodWsOffsetColonAlpha:
+				// continue
+			case timeZ:
+				// timeZ
+				//   15:04:05.99Z
+				// With a time-zone at end after Z
+				// 2006-01-02T15:04:05.999999999Z07:00
+				// 2006-01-02T15:04:05Z07:00
+				// RFC3339     = "2006-01-02T15:04:05Z07:00"
+				// RFC3339Nano = "2006-01-02T15:04:05.999999999Z07:00"
+				if unicode.IsDigit(r) {
+					p.stateTime = timeZDigit
+				}
+
+			}
+		}
+
+		switch p.stateTime {
+		case timeWsAlphaWs:
+			p.yearlen = i - p.yeari
+			p.setYear()
+		case timeWsYear:
+			p.yearlen = i - p.yeari
+			p.setYear()
+		case timeWsAlphaZoneOffsetWsExtra:
+			p.trimExtra()
+		case timeWsAlphaZoneOffset:
+			// 06:20:00 UTC-05
+			if i-p.offseti < 4 {
+				p.set(p.offseti, "-07")
+			} else {
+				p.set(p.offseti, "-0700")
+			}
+
+		case timePeriod:
+			p.mslen = i - p.msi
+		case timeOffset:
+			// 19:55:00+0100
+			p.set(p.offseti, "-0700")
+		case timeWsOffset:
+			p.set(p.offseti, "-0700")
+		case timeWsOffsetWs:
+			// 17:57:51 -0700 2009
+			// 00:12:00 +0000 UTC
+		case timeWsOffsetColon:
+			// 17:57:51 -07:00
+			p.set(p.offseti, "-07:00")
+		case timeOffsetColon:
+			// 15:04:05+07:00
+			p.set(p.offseti, "-07:00")
+		case timePeriodOffset:
+			// 19:55:00.799+0100
+			p.set(p.offseti, "-0700")
+		case timePeriodOffsetColon:
+			p.set(p.offseti, "-07:00")
+		case timePeriodWsOffsetColonAlpha:
+			p.tzlen = i - p.tzi
+			switch p.tzlen {
+			case 3:
+				p.set(p.tzi, "MST")
+			case 4:
+				p.set(p.tzi, "MST ")
+			}
+		case timePeriodWsOffset:
+			p.set(p.offseti, "-0700")
+		}
+		p.coalesceTime(i)
+	}
+
+	switch p.stateDate {
+	case dateDigit:
+		// unixy timestamps ish
+		//  example              ct type
+		//  1499979655583057426  19 nanoseconds
+		//  1499979795437000     16 micro-seconds
+		//  20180722105203       14 yyyyMMddhhmmss
+		//  1499979795437        13 milliseconds
+		//  1332151919           10 seconds
+		//  20140601             8  yyyymmdd
+		//  2014                 4  yyyy
+		t := time.Time{}
+		if len(datestr) == len("1499979655583057426") { // 19
+			// nano-seconds
+			if nanoSecs, err := strconv.ParseInt(datestr, 10, 64); err == nil {
+				t = time.Unix(0, nanoSecs)
+			}
+		} else if len(datestr) == len("1499979795437000") { // 16
+			// micro-seconds
+			if microSecs, err := strconv.ParseInt(datestr, 10, 64); err == nil {
+				t = time.Unix(0, microSecs*1000)
+			}
+		} else if len(datestr) == len("yyyyMMddhhmmss") { // 14
+			// yyyyMMddhhmmss
+			p.format = []byte("20060102150405")
+			return p, nil
+		} else if len(datestr) == len("1332151919000") { // 13
+			if miliSecs, err := strconv.ParseInt(datestr, 10, 64); err == nil {
+				t = time.Unix(0, miliSecs*1000*1000)
+			}
+		} else if len(datestr) == len("1332151919") { //10
+			if secs, err := strconv.ParseInt(datestr, 10, 64); err == nil {
+				t = time.Unix(secs, 0)
+			}
+		} else if len(datestr) == len("20140601") {
+			p.format = []byte("20060102")
+			return p, nil
+		} else if len(datestr) == len("2014") {
+			p.format = []byte("2006")
+			return p, nil
+		} else if len(datestr) < 4 {
+			return nil, fmt.Errorf("unrecognized format, too short %v", datestr)
+		}
+		if !t.IsZero() {
+			if loc == nil {
+				p.t = &t
+				return p, nil
+			}
+			t = t.In(loc)
+			p.t = &t
+			return p, nil
+		}
+
+	case dateYearDash:
+		// 2006-01
+		return p, nil
+
+	case dateYearDashDash:
+		// 2006-01-02
+		// 2006-1-02
+		// 2006-1-2
+		// 2006-01-2
+		return p, nil
+
+	case dateYearDashAlphaDash:
+		// 2013-Feb-03
+		// 2013-Feb-3
+		p.daylen = i - p.dayi
+		p.setDay()
+		return p, nil
+
+	case dateYearDashDashWs:
+		// 2013-04-01
+		return p, nil
+
+	case dateYearDashDashT:
+		return p, nil
+
+	case dateDigitDashAlphaDash:
+		// 13-Feb-03   ambiguous
+		// 28-Feb-03   ambiguous
+		// 29-Jun-2016
+		length := len(datestr) - (p.moi + p.molen + 1)
+		if length == 4 {
+			p.yearlen = 4
+			p.set(p.yeari, "2006")
+			// We now also know that part1 was the day
+			p.dayi = 0
+			p.daylen = p.part1Len
+			p.setDay()
+		} else if length == 2 {
+			// We have no idea if this is
+			// yy-mon-dd   OR  dd-mon-yy
+			//
+			// We are going to ASSUME (bad, bad) that it is dd-mon-yy  which is a horible assumption
+			p.ambiguousMD = true
+			p.yearlen = 2
+			p.set(p.yeari, "06")
+			// We now also know that part1 was the day
+			p.dayi = 0
+			p.daylen = p.part1Len
+			p.setDay()
+		}
+
+		return p, nil
+
+	case dateDigitDot:
+		// 2014.05
+		p.molen = i - p.moi
+		p.setMonth()
+		return p, nil
+
+	case dateDigitDotDot:
+		// 03.31.1981
+		// 3.31.2014
+		// 3.2.1981
+		// 3.2.81
+		// 08.21.71
+		// 2018.09.30
+		return p, nil
+
+	case dateDigitWsMoYear:
+		// 2 Jan 2018
+		// 2 Jan 18
+		// 2 Jan 2018 23:59
+		// 02 Jan 2018 23:59
+		// 12 Feb 2006, 19:17
+		return p, nil
+
+	case dateDigitWsMolong:
+		// 18 January 2018
+		// 8 January 2018
+		if p.daylen == 2 {
+			p.format = []byte("02 January 2006")
+			return p, nil
+		}
+		p.format = []byte("2 January 2006")
+		return p, nil // parse("2 January 2006", datestr, loc)
+
+	case dateAlphaWsMonth:
+		p.yearlen = i - p.yeari
+		p.setYear()
+		return p, nil
+
+	case dateAlphaWsMonthMore:
+		return p, nil
+
+	case dateAlphaWsDigitMoreWs:
+		// oct 1, 1970
+		p.yearlen = i - p.yeari
+		p.setYear()
+		return p, nil
+
+	case dateAlphaWsDigitMoreWsYear:
+		// May 8, 2009 5:57:51 PM
+		// Jun 7, 2005, 05:57:51
+		return p, nil
+
+	case dateAlphaWsAlpha:
+		return p, nil
+
+	case dateAlphaWsAlphaYearmaybe:
+		return p, nil
+
+	case dateDigitSlash:
+		// 3/1/2014
+		// 10/13/2014
+		// 01/02/2006
+		// 2014/10/13
+		return p, nil
+
+	case dateDigitChineseYear:
+		// dateDigitChineseYear
+		//   2014年04月08日
+		p.format = []byte("2006年01月02日")
+		return p, nil
+
+	case dateDigitChineseYearWs:
+		p.format = []byte("2006年01月02日 15:04:05")
+		return p, nil
+
+	case dateWeekdayComma:
+		// Monday, 02 Jan 2006 15:04:05 -0700
+		// Monday, 02 Jan 2006 15:04:05 +0100
+		// Monday, 02-Jan-06 15:04:05 MST
+		return p, nil
+
+	case dateWeekdayAbbrevComma:
+		// Mon, 02-Jan-06 15:04:05 MST
+		// Mon, 02 Jan 2006 15:04:05 MST
+		return p, nil
+
+	}
+
+	return nil, unknownErr(datestr)
+}
+
+type parser struct {
+	loc              *time.Location
+	preferMonthFirst bool
+	ambiguousMD      bool
+	stateDate        dateState
+	stateTime        timeState
+	format           []byte
+	datestr          string
+	fullMonth        string
+	skip             int
+	extra            int
+	part1Len         int
+	yeari            int
+	yearlen          int
+	moi              int
+	molen            int
+	dayi             int
+	daylen           int
+	houri            int
+	hourlen          int
+	mini             int
+	minlen           int
+	seci             int
+	seclen           int
+	msi              int
+	mslen            int
+	offseti          int
+	offsetlen        int
+	tzi              int
+	tzlen            int
+	t                *time.Time
+}
+
+func newParser(dateStr string, loc *time.Location) *parser {
+	p := parser{
+		stateDate:        dateStart,
+		stateTime:        timeIgnore,
+		datestr:          dateStr,
+		loc:              loc,
+		preferMonthFirst: true,
+	}
+	p.format = []byte(dateStr)
+	return &p
+}
+
+func (p *parser) nextIs(i int, b byte) bool {
+	if len(p.datestr) > i+1 && p.datestr[i+1] == b {
+		return true
+	}
+	return false
+}
+
+func (p *parser) set(start int, val string) {
+	if start < 0 {
+		return
+	}
+	if len(p.format) < start+len(val) {
+		return
+	}
+	for i, r := range val {
+		p.format[start+i] = byte(r)
+	}
+}
+func (p *parser) setMonth() {
+	if p.molen == 2 {
+		p.set(p.moi, "01")
+	} else if p.molen == 1 {
+		p.set(p.moi, "1")
+	}
+}
+
+func (p *parser) setDay() {
+	if p.daylen == 2 {
+		p.set(p.dayi, "02")
+	} else if p.daylen == 1 {
+		p.set(p.dayi, "2")
+	}
+}
+func (p *parser) setYear() {
+	if p.yearlen == 2 {
+		p.set(p.yeari, "06")
+	} else if p.yearlen == 4 {
+		p.set(p.yeari, "2006")
+	}
+}
+func (p *parser) coalesceDate(end int) {
+	if p.yeari > 0 {
+		if p.yearlen == 0 {
+			p.yearlen = end - p.yeari
+		}
+		p.setYear()
+	}
+	if p.moi > 0 && p.molen == 0 {
+		p.molen = end - p.moi
+		p.setMonth()
+	}
+	if p.dayi > 0 && p.daylen == 0 {
+		p.daylen = end - p.dayi
+		p.setDay()
+	}
+}
+func (p *parser) ts() string {
+	return fmt.Sprintf("h:(%d:%d) m:(%d:%d) s:(%d:%d)", p.houri, p.hourlen, p.mini, p.minlen, p.seci, p.seclen)
+}
+func (p *parser) ds() string {
+	return fmt.Sprintf("%s d:(%d:%d) m:(%d:%d) y:(%d:%d)", p.datestr, p.dayi, p.daylen, p.moi, p.molen, p.yeari, p.yearlen)
+}
+func (p *parser) coalesceTime(end int) {
+	// 03:04:05
+	// 15:04:05
+	// 3:04:05
+	// 3:4:5
+	// 15:04:05.00
+	if p.houri > 0 {
+		if p.hourlen == 2 {
+			p.set(p.houri, "15")
+		} else if p.hourlen == 1 {
+			p.set(p.houri, "3")
+		}
+	}
+	if p.mini > 0 {
+		if p.minlen == 0 {
+			p.minlen = end - p.mini
+		}
+		if p.minlen == 2 {
+			p.set(p.mini, "04")
+		} else {
+			p.set(p.mini, "4")
+		}
+	}
+	if p.seci > 0 {
+		if p.seclen == 0 {
+			p.seclen = end - p.seci
+		}
+		if p.seclen == 2 {
+			p.set(p.seci, "05")
+		} else {
+			p.set(p.seci, "5")
+		}
+	}
+
+	if p.msi > 0 {
+		for i := 0; i < p.mslen; i++ {
+			p.format[p.msi+i] = '0'
+		}
+	}
+}
+func (p *parser) setFullMonth(month string) {
+	if p.moi == 0 {
+		p.format = []byte(fmt.Sprintf("%s%s", "January", p.format[len(month):]))
+	}
+}
+
+func (p *parser) trimExtra() {
+	if p.extra > 0 && len(p.format) > p.extra {
+		p.format = p.format[0:p.extra]
+		p.datestr = p.datestr[0:p.extra]
+	}
+}
+
+// func (p *parser) remove(i, length int) {
+// 	if len(p.format) > i+length {
+// 		//append(a[:i], a[j:]...)
+// 		p.format = append(p.format[0:i], p.format[i+length:]...)
+// 	}
+// 	if len(p.datestr) > i+length {
+// 		//append(a[:i], a[j:]...)
+// 		p.datestr = fmt.Sprintf("%s%s", p.datestr[0:i], p.datestr[i+length:])
+// 	}
+// }
+
+func (p *parser) parse() (time.Time, error) {
+	if p.t != nil {
+		return *p.t, nil
+	}
+	if len(p.fullMonth) > 0 {
+		p.setFullMonth(p.fullMonth)
+	}
+	if p.skip > 0 && len(p.format) > p.skip {
+		p.format = p.format[p.skip:]
+		p.datestr = p.datestr[p.skip:]
+	}
+	//gou.Debugf("parse %q   AS   %q", p.datestr, string(p.format))
+	if p.loc == nil {
+		return time.Parse(string(p.format), p.datestr)
+	}
+	return time.ParseInLocation(string(p.format), p.datestr, p.loc)
+}
+func isMonthFull(alpha string) bool {
+	for _, month := range months {
+		if alpha == month {
+			return true
+		}
+	}
+	return false
+}