1865 lines
43 KiB
Go
1865 lines
43 KiB
Go
// Package dateparse parses date-strings without knowing the format
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// in advance, using a fast lex based approach to eliminate shotgun
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// attempts. It leans towards US style dates when there is a conflict.
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package dateparse
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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"unicode"
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"unicode/utf8"
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)
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// func init() {
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// gou.SetupLogging("debug")
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// gou.SetColorOutput()
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// }
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var months = []string{
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"january",
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"february",
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"march",
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"april",
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"may",
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"june",
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"july",
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"august",
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"september",
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"october",
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"november",
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"december",
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}
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type dateState uint8
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type timeState uint8
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const (
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dateStart dateState = iota // 0
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dateDigit
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dateYearDash
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dateYearDashAlphaDash
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dateYearDashDash
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dateYearDashDashWs // 5
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dateYearDashDashT
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dateDigitDash
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dateDigitDashAlpha
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dateDigitDashAlphaDash
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dateDigitDot // 10
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dateDigitDotDot
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dateDigitSlash
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dateDigitChineseYear
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dateDigitChineseYearWs
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dateDigitWs // 15
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dateDigitWsMoYear
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dateDigitWsMolong
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dateAlpha
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dateAlphaWs
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dateAlphaWsDigit // 20
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dateAlphaWsDigitMore
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dateAlphaWsDigitMoreWs
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dateAlphaWsDigitMoreWsYear
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dateAlphaWsMonth
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dateAlphaWsMonthMore
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dateAlphaWsMonthSuffix
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dateAlphaWsMore
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dateAlphaWsAtTime
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dateAlphaWsAlpha
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dateAlphaWsAlphaYearmaybe
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dateAlphaPeriodWsDigit
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dateWeekdayComma
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dateWeekdayAbbrevComma
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)
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const (
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// Time state
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timeIgnore timeState = iota // 0
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timeStart
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timeWs
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timeWsAlpha
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timeWsAlphaWs
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timeWsAlphaZoneOffset // 5
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timeWsAlphaZoneOffsetWs
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timeWsAlphaZoneOffsetWsYear
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timeWsAlphaZoneOffsetWsExtra
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timeWsAMPMMaybe
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timeWsAMPM // 10
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timeWsOffset
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timeWsOffsetWs // 12
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timeWsOffsetColonAlpha
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timeWsOffsetColon
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timeWsYear // 15
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timeOffset
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timeOffsetColon
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timeAlpha
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timePeriod
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timePeriodOffset // 20
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timePeriodOffsetColon
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timePeriodOffsetColonWs
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timePeriodWs
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timePeriodWsAlpha
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timePeriodWsOffset // 25
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timePeriodWsOffsetWs
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timePeriodWsOffsetWsAlpha
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timePeriodWsOffsetColon
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timePeriodWsOffsetColonAlpha
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timeZ
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timeZDigit
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)
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var (
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// ErrAmbiguousMMDD for date formats such as 04/02/2014 the mm/dd vs dd/mm are
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// ambiguous, so it is an error for strict parse rules.
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ErrAmbiguousMMDD = fmt.Errorf("This date has ambiguous mm/dd vs dd/mm type format")
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)
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func unknownErr(datestr string) error {
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return fmt.Errorf("Could not find format for %q", datestr)
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}
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// ParseAny parse an unknown date format, detect the layout.
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// Normal parse. Equivalent Timezone rules as time.Parse().
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// NOTE: please see readme on mmdd vs ddmm ambiguous dates.
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func ParseAny(datestr string) (time.Time, error) {
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p, err := parseTime(datestr, nil)
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if err != nil {
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return time.Time{}, err
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}
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return p.parse()
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}
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// ParseIn with Location, equivalent to time.ParseInLocation() timezone/offset
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// rules. Using location arg, if timezone/offset info exists in the
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// datestring, it uses the given location rules for any zone interpretation.
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// That is, MST means one thing when using America/Denver and something else
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// in other locations.
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func ParseIn(datestr string, loc *time.Location) (time.Time, error) {
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p, err := parseTime(datestr, loc)
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if err != nil {
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return time.Time{}, err
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}
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return p.parse()
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}
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// ParseLocal Given an unknown date format, detect the layout,
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// using time.Local, parse.
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//
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// Set Location to time.Local. Same as ParseIn Location but lazily uses
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// the global time.Local variable for Location argument.
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//
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// denverLoc, _ := time.LoadLocation("America/Denver")
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// time.Local = denverLoc
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//
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// t, err := dateparse.ParseLocal("3/1/2014")
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//
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// Equivalent to:
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//
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// t, err := dateparse.ParseIn("3/1/2014", denverLoc)
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//
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func ParseLocal(datestr string) (time.Time, error) {
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p, err := parseTime(datestr, time.Local)
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if err != nil {
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return time.Time{}, err
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}
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return p.parse()
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}
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// MustParse parse a date, and panic if it can't be parsed. Used for testing.
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// Not recommended for most use-cases.
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func MustParse(datestr string) time.Time {
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p, err := parseTime(datestr, nil)
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if err != nil {
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panic(err.Error())
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}
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t, err := p.parse()
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if err != nil {
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panic(err.Error())
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}
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return t
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}
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// ParseFormat parse's an unknown date-time string and returns a layout
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// string that can parse this (and exact same format) other date-time strings.
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//
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// layout, err := dateparse.ParseFormat("2013-02-01 00:00:00")
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// // layout = "2006-01-02 15:04:05"
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//
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func ParseFormat(datestr string) (string, error) {
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p, err := parseTime(datestr, nil)
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if err != nil {
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return "", err
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}
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_, err = p.parse()
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if err != nil {
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return "", err
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}
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return string(p.format), nil
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}
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// ParseStrict parse an unknown date format. IF the date is ambigous
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// mm/dd vs dd/mm then return an error. These return errors: 3.3.2014 , 8/8/71 etc
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func ParseStrict(datestr string) (time.Time, error) {
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p, err := parseTime(datestr, nil)
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if err != nil {
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return time.Time{}, err
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}
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if p.ambiguousMD {
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return time.Time{}, ErrAmbiguousMMDD
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}
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return p.parse()
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}
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func parseTime(datestr string, loc *time.Location) (*parser, error) {
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p := newParser(datestr, loc)
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i := 0
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// General strategy is to read rune by rune through the date looking for
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// certain hints of what type of date we are dealing with.
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// Hopefully we only need to read about 5 or 6 bytes before
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// we figure it out and then attempt a parse
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iterRunes:
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for ; i < len(datestr); i++ {
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//r := rune(datestr[i])
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r, bytesConsumed := utf8.DecodeRuneInString(datestr[i:])
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if bytesConsumed > 1 {
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i += (bytesConsumed - 1)
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}
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//gou.Debugf("i=%d r=%s state=%d %s", i, string(r), p.stateDate, datestr)
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switch p.stateDate {
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case dateStart:
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if unicode.IsDigit(r) {
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p.stateDate = dateDigit
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} else if unicode.IsLetter(r) {
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p.stateDate = dateAlpha
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} else {
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return nil, unknownErr(datestr)
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}
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case dateDigit:
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switch r {
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case '-', '\u2212':
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// 2006-01-02
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// 2013-Feb-03
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// 13-Feb-03
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// 29-Jun-2016
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if i == 4 {
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p.stateDate = dateYearDash
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p.yeari = 0
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p.yearlen = i
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p.moi = i + 1
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p.set(0, "2006")
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} else {
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p.stateDate = dateDigitDash
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}
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case '/':
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// 03/31/2005
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// 2014/02/24
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p.stateDate = dateDigitSlash
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if i == 4 {
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p.yearlen = i
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p.moi = i + 1
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p.setYear()
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} else {
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p.ambiguousMD = true
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if p.preferMonthFirst {
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if p.molen == 0 {
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p.molen = i
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p.setMonth()
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p.dayi = i + 1
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}
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}
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}
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case '.':
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// 3.31.2014
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// 08.21.71
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// 2014.05
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p.stateDate = dateDigitDot
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if i == 4 {
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p.yearlen = i
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p.moi = i + 1
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p.setYear()
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} else {
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p.ambiguousMD = true
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p.moi = 0
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p.molen = i
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p.setMonth()
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p.dayi = i + 1
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}
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case ' ':
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// 18 January 2018
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// 8 January 2018
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// 8 jan 2018
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// 02 Jan 2018 23:59
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// 02 Jan 2018 23:59:34
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// 12 Feb 2006, 19:17
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// 12 Feb 2006, 19:17:22
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p.stateDate = dateDigitWs
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p.dayi = 0
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p.daylen = i
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case '年':
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// Chinese Year
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p.stateDate = dateDigitChineseYear
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case ',':
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return nil, unknownErr(datestr)
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default:
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continue
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}
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p.part1Len = i
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case dateYearDash:
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// dateYearDashDashT
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// 2006-01-02T15:04:05Z07:00
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// dateYearDashDashWs
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// 2013-04-01 22:43:22
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// dateYearDashAlphaDash
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// 2013-Feb-03
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switch r {
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case '-':
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p.molen = i - p.moi
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p.dayi = i + 1
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p.stateDate = dateYearDashDash
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p.setMonth()
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default:
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if unicode.IsLetter(r) {
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p.stateDate = dateYearDashAlphaDash
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}
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}
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case dateYearDashDash:
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// dateYearDashDashT
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// 2006-01-02T15:04:05Z07:00
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// dateYearDashDashWs
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// 2013-04-01 22:43:22
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switch r {
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case ' ':
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p.daylen = i - p.dayi
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p.stateDate = dateYearDashDashWs
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p.stateTime = timeStart
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p.setDay()
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break iterRunes
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case 'T':
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p.daylen = i - p.dayi
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p.stateDate = dateYearDashDashT
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p.stateTime = timeStart
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p.setDay()
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break iterRunes
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}
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case dateYearDashAlphaDash:
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// 2013-Feb-03
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switch r {
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case '-':
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p.molen = i - p.moi
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p.set(p.moi, "Jan")
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p.dayi = i + 1
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}
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case dateDigitDash:
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// 13-Feb-03
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// 29-Jun-2016
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if unicode.IsLetter(r) {
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p.stateDate = dateDigitDashAlpha
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p.moi = i
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} else {
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return nil, unknownErr(datestr)
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}
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case dateDigitDashAlpha:
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// 13-Feb-03
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// 28-Feb-03
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// 29-Jun-2016
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switch r {
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case '-':
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p.molen = i - p.moi
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p.set(p.moi, "Jan")
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p.yeari = i + 1
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p.stateDate = dateDigitDashAlphaDash
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}
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case dateDigitDashAlphaDash:
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// 13-Feb-03 ambiguous
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// 28-Feb-03 ambiguous
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// 29-Jun-2016
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switch r {
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case ' ':
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// we need to find if this was 4 digits, aka year
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// or 2 digits which makes it ambiguous year/day
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length := i - (p.moi + p.molen + 1)
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if length == 4 {
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p.yearlen = 4
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p.set(p.yeari, "2006")
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// We now also know that part1 was the day
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p.dayi = 0
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p.daylen = p.part1Len
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p.setDay()
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} else if length == 2 {
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// We have no idea if this is
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// yy-mon-dd OR dd-mon-yy
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//
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// We are going to ASSUME (bad, bad) that it is dd-mon-yy which is a horible assumption
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p.ambiguousMD = true
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p.yearlen = 2
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p.set(p.yeari, "06")
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// We now also know that part1 was the day
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p.dayi = 0
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p.daylen = p.part1Len
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p.setDay()
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}
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p.stateTime = timeStart
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break iterRunes
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}
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case dateDigitSlash:
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// 2014/07/10 06:55:38.156283
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// 03/19/2012 10:11:59
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// 04/2/2014 03:00:37
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// 3/1/2012 10:11:59
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// 4/8/2014 22:05
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// 3/1/2014
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// 10/13/2014
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// 01/02/2006
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// 1/2/06
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switch r {
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case ' ':
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p.stateTime = timeStart
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if p.yearlen == 0 {
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p.yearlen = i - p.yeari
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p.setYear()
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} else if p.daylen == 0 {
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p.daylen = i - p.dayi
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p.setDay()
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}
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break iterRunes
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case '/':
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if p.yearlen > 0 {
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// 2014/07/10 06:55:38.156283
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if p.molen == 0 {
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p.molen = i - p.moi
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p.setMonth()
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p.dayi = i + 1
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}
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} else if p.preferMonthFirst {
|
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if p.daylen == 0 {
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p.daylen = i - p.dayi
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p.setDay()
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p.yeari = i + 1
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}
|
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}
|
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}
|
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|
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case dateDigitWs:
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// 18 January 2018
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// 8 January 2018
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// 8 jan 2018
|
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// 1 jan 18
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// 02 Jan 2018 23:59
|
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// 02 Jan 2018 23:59:34
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// 12 Feb 2006, 19:17
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// 12 Feb 2006, 19:17:22
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switch r {
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case ' ':
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p.yeari = i + 1
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|
//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
|
|
}
|