test one smart default parser

main.go

@@ -133,6 +133,11 @@ func Main(ctx context.Context) error {
 	)
 }
 
+const (
+	PatternGroupTitleHyphenSE = `^(\[[^\]]*\] )?(?P<title>.*?)( -)?[ \.](S(?P<season>[0-9]{2})E)?(?P<episode>[0-9]{2})[^0-9].*`
+	PatternTitleSE            = `^(?P<title>.*) S(?P<season>[0-9]+)E(?P<episode>[0-9]+).*`
+)
+
 func Run(ctx context.Context, outd, ind string, patterns []string, overrides Fields, dry bool) error {
 	mvNLn := RealMvNLn
 	if dry {
@@ -141,10 +146,7 @@ func Run(ctx context.Context, outd, ind string, patterns []string, overrides Fie
 	return RunWith(ctx,
 		outd,
 		ind,
-		append(patterns,
+		append(patterns, PatternGroupTitleHyphenSE, PatternTitleSE),
-			`^\[[^\]]*\] (?P<title>.*) - (?P<episode>[0-9]+).*`,
-			`^(?P<title>.*) S(?P<season>[0-9]+)E(?P<episode>[0-9]+).*`,
-		),
 		overrides,
 		mvNLn,
 	)
@@ -171,28 +173,11 @@ func RunWith(ctx context.Context, outd, ind string, patterns []string, overrides
 func one(ctx context.Context, outd, inf string, patterns []string, overrides Fields, mvNLn MvNLn) error {
 	f := path.Base(inf)
 	for _, pattern := range patterns {
-		re := regexp.MustCompile(pattern)
+		found, match := Parse(f, pattern)
-		if !re.MatchString(f) {
+		if !match {
 			continue
 		}
 
-		var found Fields
-		groupNames := re.SubexpNames()
-		groups := re.FindStringSubmatch(f)
-		for i := 1; i < len(groupNames); i++ {
-			v := groups[i]
-			switch groupNames[i] {
-			case "title":
-				found.Title = v
-			case "season":
-				found.Season = v
-			case "episode":
-				found.Episode = v
-			default:
-				return fmt.Errorf("unexpected capture group %q", groupNames[i])
-			}
-		}
-
 		for _, wr := range [][2]*string{
 			[2]*string{&found.Title, &overrides.Title},
 			[2]*string{&found.Season, &overrides.Season},
@@ -213,6 +198,31 @@ func one(ctx context.Context, outd, inf string, patterns []string, overrides Fie
 	return nil
 }
 
+func Parse(f string, pattern string) (Fields, bool) {
+	re := regexp.MustCompile(pattern)
+	if !re.MatchString(f) {
+		return Fields{}, false
+	}
+
+	var found Fields
+	groupNames := re.SubexpNames()
+	groups := re.FindStringSubmatch(f)
+	for i := 1; i < len(groupNames); i++ {
+		v := groups[i]
+		switch groupNames[i] {
+		case "title":
+			found.Title = v
+		case "season":
+			found.Season = v
+		case "episode":
+			found.Episode = v
+		default:
+			//return fmt.Errorf("unexpected capture group %q", groupNames[i])
+		}
+	}
+	return found, true
+}
+
 func foundOne(ctx context.Context, outd, inf string, fields Fields, mvNLn MvNLn) error {
 	tmpl, err := template.New(inf).Parse(outd)
 	if err != nil {

main_test.go

@@ -242,3 +242,101 @@ func ls(d string) []string {
 	slices.Sort(result)
 	return result
 }
+
+func TestParse(t *testing.T) {
+	cases := map[string]struct {
+		pattern string
+		want    main.Fields
+	}{
+		"[SubsPlease] Tokidoki Bosotto Russia-go de Dereru Tonari no Alya-san - 01 (720p) [A12844D5].mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "Tokidoki Bosotto Russia-go de Dereru Tonari no Alya-san",
+				Season:  "",
+				Episode: "01",
+			},
+		},
+		"Survivor.AU.S12E11.1080p.HEVC.x265-MeGusta[EZTVx.to].mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "Survivor.AU",
+				Season:  "12",
+				Episode: "11",
+			},
+		},
+		"DAN DA DAN (2024) S01E01v2 (1080p WEB-DL H264 AAC DDP 2.0 Dual-Audio) [MALD].mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "DAN DA DAN (2024)",
+				Season:  "01",
+				Episode: "01",
+			},
+		},
+		"ZENSHU.S01E01.1080p.AMZN.WEB-DL.MULTi.DDP2.0.H.264.MSubs-ToonsHub.mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "ZENSHU",
+				Season:  "01",
+				Episode: "01",
+			},
+		},
+		"[Yameii] My Hero Academia - S07E08 [English Dub] [CR WEB-DL 720p] [DE5FFC3E].mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "My Hero Academia",
+				Season:  "07",
+				Episode: "08",
+			},
+		},
+		"Ranma1-2.2024.S01E03.Because.Theres.Someone.He.Likes.1080p.NF.WEB-DL.AAC2.0.H.264-VARYG.mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "Ranma1-2.2024",
+				Season:  "01",
+				Episode: "03",
+			},
+		},
+		"[Yameii] The Apothecary Diaries - S02E03 [English Dub] [CR WEB-DL 720p] [FD3E7434].mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "The Apothecary Diaries",
+				Season:  "02",
+				Episode: "03",
+			},
+		},
+		"The.Dinner.Table.Detective.S01E01.Welcome.to.the.murderous.party.File.1.1080p.AMZN.WEB-DL.DDP2.0.H.264-VARYG.mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "The.Dinner.Table.Detective",
+				Season:  "01",
+				Episode: "01",
+			},
+		},
+		"[Reza] Wistoria Wand and Sword - S01E01.mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "Wistoria Wand and Sword",
+				Season:  "01",
+				Episode: "01",
+			},
+		},
+		"[EMBER] Ao no Hako - 01.mkv": {
+			pattern: main.PatternGroupTitleHyphenSE,
+			want: main.Fields{
+				Title:   "Ao no Hako",
+				Season:  "",
+				Episode: "01",
+			},
+		},
+	}
+
+	for f, d := range cases {
+		c := d
+		t.Run(f, func(t *testing.T) {
+			got, _ := main.Parse(f, c.pattern)
+			if got != c.want {
+				t.Errorf("expected \n\t%+v but got \n\t%+v", c.want, got)
+			}
+		})
+	}
+}