Fix #7 EXT-X-DISCONTINUITY parsing error

It also apply to EXT-X-PROGRAM-DATE-TIME parsing.
Unit tests updated.

reader.go

@@ -530,12 +530,14 @@ func decodeLineOfMediaPlaylist(p *MediaPlaylist, wv *WV, state *decodingState, l
 				return err
 			}
 			state.tagRange = false
-		} else if state.tagDiscontinuity {
+		}
+		if state.tagDiscontinuity {
 			state.tagDiscontinuity = false
 			if err = p.SetDiscontinuity(); strict && err != nil {
 				return err
 			}
-		} else if state.tagProgramDateTime {
+		}
+		if state.tagProgramDateTime {
 			state.tagProgramDateTime = false
 			if err = p.SetProgramDateTime(state.programDateTime); strict && err != nil {
 				return err

reader_test.go

@@ -22,6 +22,7 @@ package m3u8
 
 import (
 	"bufio"
+	"fmt"
 	"os"
 	"testing"
 )
@@ -169,3 +170,30 @@ func TestDecodeMediaPlaylistWithAutodetection(t *testing.T) {
 	// TODO check other values…
 	// fmt.Println(pp.Encode().String())
 }
+
+/***************************
+ *  Code parsing examples  *
+ ***************************/
+
+// Parse playlist with EXT-X-DISCONTINUITY tag
+func ExampleDecodeMediaPlaylistWithDiscontinuity() {
+	f, _ := os.Open("sample-playlists/media-playlist-with-discontinuity.m3u8")
+	p, _, _ := DecodeFrom(bufio.NewReader(f), true)
+	pp := p.(*MediaPlaylist)
+	pp.DurationAsInt(true)
+	fmt.Printf("%s", pp)
+	// Output:
+	// #EXTM3U
+	// #EXT-X-VERSION:3
+	// #EXT-X-MEDIA-SEQUENCE:1
+	// #EXT-X-TARGETDURATION:10
+	// #EXTINF:10,
+	// ad0.ts
+	// #EXTINF:8,
+	// ad1.ts
+	// #EXT-X-DISCONTINUITY
+	// #EXTINF:10,
+	// movieA.ts
+	// #EXTINF:10,
+	// movieB.ts
+}

sample-playlists/media-playlist-with-discontinuity.m3u8

@@ -0,0 +1,15 @@
+# https://developer.apple.com/library/ios/technotes/tn2288/_index.html
+#
+#EXTM3U
+#EXT-X-TARGETDURATION:10
+#EXT-X-VERSION:3
+#EXT-X-MEDIA-SEQUENCE:0
+#EXTINF:10.0,
+ad0.ts
+#EXTINF:8.0,
+ad1.ts
+#EXT-X-DISCONTINUITY
+#EXTINF:10.0,
+movieA.ts
+#EXTINF:10.0,
+movieB.ts

writer_test.go

@@ -387,9 +387,9 @@ func TestEncodeMasterPlaylist(t *testing.T) {
 	m.Append("chunklist2.m3u8", p, VariantParams{ProgramId: 123, Bandwidth: 1500000, Resolution: "576x480"})
 }
 
-/*******************
- *  Code examples  *
- *******************/
+/******************************
+ *  Code generation examples  *
+ ******************************/
 
 // Create new media playlist
 // Add two segments to media playlist
@@ -404,7 +404,7 @@ func ExampleMediaPlaylist_String() {
 	// #EXT-X-VERSION:3
 	// #EXT-X-MEDIA-SEQUENCE:1
 	// #EXT-X-TARGETDURATION:6
-	// #EXTINF:5,
+	// #EXTINF:5.000,
 	// test01.ts
 }