diff --git a/item.go b/item.go index 74045e4..905d868 100644 --- a/item.go +++ b/item.go @@ -3,6 +3,7 @@ package feeder import ( "crypto/md5" "io" + "time" ) type Item struct { @@ -27,6 +28,10 @@ type Item struct { Extensions map[string]map[string][]Extension } +func (i *Item) ParsedPubDate() (time.Time, error) { + return parseTime(i.PubDate) +} + func (i *Item) Key() string { switch { case i.Guid != nil && len(*i.Guid) != 0: diff --git a/timeparser.go b/timeparser.go new file mode 100644 index 0000000..5a106e9 --- /dev/null +++ b/timeparser.go @@ -0,0 +1,35 @@ +package feeder + +import ( + "strings" + "time" +) + +func parseTime(formatted string) (time.Time, error) { + var layouts = [...]string{ + "Mon, _2 Jan 2006 15:04:05 MST", + "Mon, _2 Jan 2006 15:04:05 -0700", + time.ANSIC, + time.UnixDate, + time.RubyDate, + time.RFC822, + time.RFC822Z, + time.RFC850, + time.RFC1123, + time.RFC1123Z, + time.RFC3339, + time.RFC3339Nano, + "Mon, 2, Jan 2006 15:4", + "02 Jan 2006 15:04:05 MST", + } + var t time.Time + var err error + formatted = strings.TrimSpace(formatted) + for _, layout := range layouts { + t, err = time.Parse(layout, formatted) + if !t.IsZero() { + break + } + } + return t, err +} diff --git a/timeparser_test.go b/timeparser_test.go new file mode 100644 index 0000000..2a490e4 --- /dev/null +++ b/timeparser_test.go @@ -0,0 +1,94 @@ +package feeder + +import ( + "testing" + "time" +) + +func Test_InvalidDate(t *testing.T) { + date, err := parseTime("invalid") + if !date.IsZero() { + t.Errorf("Invalid date should parse to zero") + } + if err == nil { + t.Errorf("error should not be nil") + } +} + +func Test_ParseLayout0(t *testing.T) { + date, err := parseTime("2014-03-07T05:38:00-05:00") + expected := time.Date(2014, time.March, 7, 5, 38, 0, 0, time.FixedZone("-0500", -18000)) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout1(t *testing.T) { + date, err := parseTime("Fri, 07 Mar 2014 17:42:51 GMT") + expected := time.Date(2014, time.March, 7, 17, 42, 51, 0, time.UTC) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout2(t *testing.T) { + date, err := parseTime("2014-02-05T23:33:34Z") + expected := time.Date(2014, time.February, 5, 23, 33, 34, 0, time.UTC) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout3(t *testing.T) { + date, err := parseTime("Mon, 03 Mar 2014 02:12:25 +0000") + expected := time.Date(2014, time.March, 3, 2, 12, 25, 0, time.UTC) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout4(t *testing.T) { + date, err := parseTime("Fri, 21, Mar 2014 10:41") + expected := time.Date(2014, time.March, 21, 10, 41, 0, 0, time.UTC) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout4_1(t *testing.T) { + date, err := parseTime("Fri, 17, Jan 2014 11:1") + expected := time.Date(2014, time.January, 17, 11, 1, 0, 0, time.UTC) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout4_2(t *testing.T) { + date, err := parseTime("Thu, 9, Jan 2014 10:19") + expected := time.Date(2014, time.January, 9, 10, 19, 0, 0, time.UTC) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func Test_ParseLayout5(t *testing.T) { + date, err := parseTime("22 Jul 2013 14:55:01 EST") + expected := time.Date(2013, time.July, 22, 14, 55, 1, 0, time.FixedZone("EST", -18000)) + assertEqualTime(t, expected, date) + if err != nil { + t.Errorf("err should be nil") + } +} + +func assertEqualTime(t *testing.T, expected, actual time.Time) { + if !expected.Equal(actual) { + t.Errorf("expected %v but was %v", expected, actual) + } +}