Move LyricTextEncoder and LyricTextDecoder to better location.

osu.Game.Rulesets.Karaoke.Tests/Integration/Formats/LyricTextDecoderTest.cs

@@ -0,0 +1,27 @@
+// Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Game.Rulesets.Karaoke.Integration.Formats;
+using osu.Game.Rulesets.Karaoke.Tests.Helper;
+
+namespace osu.Game.Rulesets.Karaoke.Tests.Integration.Formats;
+
+public class LyricTextDecoderTest
+{
+    [TestCase("karaoke", new[] { "[0,0]:karaoke" })] // only one lyric.
+    [TestCase("か\nら\nお\nけ", new[] { "[0,0]:か", "[0,0]:ら", "[0,0]:お", "[0,0]:け" })] // multi lyric.
+    public void TestDecodeBeatmapToPureText(string expected, string[] lyrics)
+    {
+        var decoder = new LyricTextDecoder();
+        var actual = decoder.Decode(expected);
+
+        var expectedLyrics = TestCaseTagHelper.ParseLyrics(lyrics);
+        Assert.AreEqual(expectedLyrics.Length, actual.Length);
+
+        for (int i = 0; i < expectedLyrics.Length; i++)
+        {
+            Assert.AreEqual(expectedLyrics[i].Text, actual[i].Text);
+        }
+    }
+}

osu.Game.Rulesets.Karaoke.Tests/Beatmaps/Formats/LyricTextEncoderTest.cs → osu.Game.Rulesets.Karaoke.Tests/Integration/Formats/LyricTextEncoderTest.cs

@@ -4,11 +4,11 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Game.Rulesets.Karaoke.Beatmaps;
-using osu.Game.Rulesets.Karaoke.Beatmaps.Formats;
+using osu.Game.Rulesets.Karaoke.Integration.Formats;
 using osu.Game.Rulesets.Karaoke.Objects;
 using osu.Game.Rulesets.Karaoke.Tests.Helper;
 
-namespace osu.Game.Rulesets.Karaoke.Tests.Beatmaps.Formats;
+namespace osu.Game.Rulesets.Karaoke.Tests.Integration.Formats;
 
 [TestFixture]
 public class LyricTextEncoderTest

osu.Game.Rulesets.Karaoke/Integration/Formats/LyricTextDecoder.cs

@@ -0,0 +1,19 @@
+// Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using osu.Game.Rulesets.Karaoke.Objects;
+
+namespace osu.Game.Rulesets.Karaoke.Integration.Formats;
+
+public class LyricTextDecoder : IDecoder<Lyric[]>
+{
+    public Lyric[] Decode(string source)
+    {
+        return source.Split('\n').Select((text, index) => new Lyric
+        {
+            Order = index + 1, // should create default order.
+            Text = text,
+        }).ToArray();
+    }
+}

osu.Game.Rulesets.Karaoke/Beatmaps/Formats/LyricTextEncoder.cs → osu.Game.Rulesets.Karaoke/Integration/Formats/LyricTextEncoder.cs

@@ -5,9 +5,9 @@
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Karaoke.Objects;
 
-namespace osu.Game.Rulesets.Karaoke.Beatmaps.Formats;
+namespace osu.Game.Rulesets.Karaoke.Integration.Formats;
 
-public class LyricTextEncoder
+public class LyricTextEncoder : IEncoder<IBeatmap>
 {
     public string Encode(IBeatmap output)
     {