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