package shared import ( "fmt" "strings" "time" ) // DateFormats taken from github.com/mjibson/goread var dateFormats = []string{ time.RFC822, // RSS time.RFC822Z, // RSS time.RFC3339, // Atom time.UnixDate, time.RubyDate, time.RFC850, time.RFC1123Z, time.RFC1123, time.ANSIC, "Mon, January 2 2006 15:04:05 -0700", "Mon, Jan 2 2006 15:04:05 -700", "Mon, Jan 2 2006 15:04:05 -0700", "Mon Jan 2 15:04 2006", "Mon Jan 02, 2006 3:04 pm", "Mon Jan 02 2006 15:04:05 -0700", "Mon Jan 02 2006 15:04:05 GMT-0700 (MST)", "Monday, January 2, 2006 03:04 PM", "Monday, January 2, 2006", "Monday, January 02, 2006", "Monday, 2 January 2006 15:04:05 -0700", "Monday, 2 Jan 2006 15:04:05 -0700", "Monday, 02 January 2006 15:04:05 -0700", "Monday, 02 January 2006 15:04:05", "Mon, 2 January 2006, 15:04 -0700", "Mon, 2 January 2006 15:04:05 -0700", "Mon, 2 January 2006", "Mon, 2 Jan 2006 3:04:05 PM -0700", "Mon, 2 Jan 2006 15:4:5 -0700 GMT", "Mon, 2, Jan 2006 15:4", "Mon, 2 Jan 2006, 15:04 -0700", "Mon, 2 Jan 2006 15:04 -0700", "Mon, 2 Jan 2006 15:04:05 UT", "Mon, 2 Jan 2006 15:04:05 -0700 MST", "Mon, 2 Jan 2006 15:04:05-0700", "Mon, 2 Jan 2006 15:04:05 -0700", "Mon, 2 Jan 2006 15:04:05", "Mon, 2 Jan 2006 15:04", "Mon,2 Jan 2006", "Mon, 2 Jan 2006", "Mon, 2 Jan 06 15:04:05 -0700", "Mon, 2006-01-02 15:04", "Mon, 02 January 2006", "Mon, 02 Jan 2006 15 -0700", "Mon, 02 Jan 2006 15:04 -0700", "Mon, 02 Jan 2006 15:04:05 Z", "Mon, 02 Jan 2006 15:04:05 UT", "Mon, 02 Jan 2006 15:04:05 MST-07:00", "Mon, 02 Jan 2006 15:04:05 MST -0700", "Mon, 02 Jan 2006 15:04:05 GMT-0700", "Mon,02 Jan 2006 15:04:05 -0700", "Mon, 02 Jan 2006 15:04:05 -0700", "Mon, 02 Jan 2006 15:04:05 -07:00", "Mon, 02 Jan 2006 15:04:05 --0700", "Mon 02 Jan 2006 15:04:05 -0700", "Mon, 02 Jan 2006 15:04:05 -07", "Mon, 02 Jan 2006 15:04:05 00", "Mon, 02 Jan 2006 15:04:05", "Mon, 02 Jan 2006 15:4:5 Z", "Mon, 02 Jan 2006", "January 2, 2006 3:04 PM", "January 2, 2006, 3:04 p.m.", "January 2, 2006 15:04:05", "January 2, 2006 03:04 PM", "January 2, 2006", "January 02, 2006 15:04", "January 02, 2006 03:04 PM", "January 02, 2006", "Jan 2, 2006 3:04:05 PM", "Jan 2, 2006", "Jan 02 2006 03:04:05PM", "Jan 02, 2006", "6/1/2 15:04", "6-1-2 15:04", "2 January 2006 15:04:05 -0700", "2 January 2006", "2 Jan 2006 15:04:05 Z", "2 Jan 2006 15:04:05 -0700", "2 Jan 2006", "2.1.2006 15:04:05", "2/1/2006", "2-1-2006", "2006 January 02", "2006-1-2T15:04:05Z", "2006-1-2 15:04:05", "2006-1-2", "2006-1-02T15:04:05Z", "2006-01-02T15:04Z", "2006-01-02T15:04-07:00", "2006-01-02T15:04:05Z", "2006-01-02T15:04:05-07:00:00", "2006-01-02T15:04:05:-0700", "2006-01-02T15:04:05-0700", "2006-01-02T15:04:05-07:00", "2006-01-02T15:04:05 -0700", "2006-01-02T15:04:05:00", "2006-01-02T15:04:05", "2006-01-02 at 15:04:05", "2006-01-02 15:04:05Z", "2006-01-02 15:04:05-0700", "2006-01-02 15:04:05-07:00", "2006-01-02 15:04:05 -0700", "2006-01-02 15:04", "2006-01-02 00:00:00.0 15:04:05.0 -0700", "2006/01/02", "2006-01-02", "15:04 02.01.2006 -0700", "1/2/2006 3:04:05 PM", "1/2/2006", "06/1/2 15:04", "06-1-2 15:04", "02 Monday, Jan 2006 15:04", "02 Jan 2006 15:04:05 UT", "02 Jan 2006 15:04:05 -0700", "02 Jan 2006 15:04:05", "02 Jan 2006", "02.01.2006 15:04:05", "02/01/2006 15:04:05", "02.01.2006 15:04", "02/01/2006 - 15:04", "02.01.2006 -0700", "02/01/2006", "02-01-2006", "01/02/2006 3:04 PM", "01/02/2006 - 15:04", "01/02/2006", "01-02-2006", } // Named zone cannot be consistently loaded, so handle separately var dateFormatsWithNamedZone = []string{ "Mon, January 02, 2006, 15:04:05 MST", "Mon, January 02, 2006 15:04:05 MST", "Mon, Jan 2, 2006 15:04 MST", "Mon, Jan 2 2006 15:04 MST", "Mon, Jan 2, 2006 15:04:05 MST", "Mon Jan 2 15:04:05 2006 MST", "Mon, Jan 02,2006 15:04:05 MST", "Monday, January 2, 2006 15:04:05 MST", "Monday, 2 January 2006 15:04:05 MST", "Monday, 2 Jan 2006 15:04:05 MST", "Monday, 02 January 2006 15:04:05 MST", "Mon, 2 January 2006 15:04 MST", "Mon, 2 January 2006, 15:04:05 MST", "Mon, 2 January 2006 15:04:05 MST", "Mon, 2 Jan 2006 15:4:5 MST", "Mon, 2 Jan 2006 15:04 MST", "Mon, 2 Jan 2006 15:04:05MST", "Mon, 2 Jan 2006 15:04:05 MST", "Mon 2 Jan 2006 15:04:05 MST", "mon,2 Jan 2006 15:04:05 MST", "Mon, 2 Jan 15:04:05 MST", "Mon, 2 Jan 06 15:04:05 MST", "Mon,02 January 2006 14:04:05 MST", "Mon, 02 Jan 2006 3:04:05 PM MST", "Mon,02 Jan 2006 15:04 MST", "Mon, 02 Jan 2006 15:04 MST", "Mon, 02 Jan 2006, 15:04:05 MST", "Mon, 02 Jan 2006 15:04:05MST", "Mon, 02 Jan 2006 15:04:05 MST", "Mon , 02 Jan 2006 15:04:05 MST", "Mon, 02 Jan 06 15:04:05 MST", "January 2, 2006 15:04:05 MST", "January 02, 2006 15:04:05 MST", "Jan 2, 2006 3:04:05 PM MST", "Jan 2, 2006 15:04:05 MST", "2 January 2006 15:04:05 MST", "2 Jan 2006 15:04:05 MST", "2006-01-02 15:04:05 MST", "1/2/2006 3:04:05 PM MST", "1/2/2006 15:04:05 MST", "02 Jan 2006 15:04 MST", "02 Jan 2006 15:04:05 MST", "02/01/2006 15:04 MST", "02-01-2006 15:04:05 MST", "01/02/2006 15:04:05 MST", } // ParseDate parses a given date string using a large // list of commonly found feed date formats. func ParseDate(ds string) (t time.Time, err error) { d := strings.TrimSpace(ds) if d == "" { return t, fmt.Errorf("Date string is empty") } for _, f := range dateFormats { if t, err = time.Parse(f, d); err == nil { return } } for _, f := range dateFormatsWithNamedZone { t, err = time.Parse(f, d) if err != nil { continue } // This is a format match! Now try to load the timezone name loc, err := time.LoadLocation(t.Location().String()) if err != nil { // We couldn't load the TZ name. Just use UTC instead... return t, nil } if t, err = time.ParseInLocation(f, ds, loc); err == nil { return t, nil } // This should not be reachable } err = fmt.Errorf("Failed to parse date: %s", ds) return }