1
0
mirror of https://github.com/ppy/osu.git synced 2024-12-27 08:42:55 +08:00
osu-lazer/osu.Game/Beatmaps/Formats/LegacyDecoder.cs

183 lines
5.5 KiB
C#
Raw Normal View History

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
2018-04-13 17:19:50 +08:00
using System;
using System.Collections.Generic;
using osu.Framework.Extensions;
2018-04-13 17:19:50 +08:00
using osu.Framework.Logging;
2018-06-28 17:20:43 +08:00
using osu.Game.Audio;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.IO;
2018-11-20 15:51:59 +08:00
using osuTK.Graphics;
2018-04-13 17:19:50 +08:00
namespace osu.Game.Beatmaps.Formats
{
public abstract class LegacyDecoder<T> : Decoder<T>
where T : new()
{
protected readonly int FormatVersion;
protected LegacyDecoder(int version)
{
FormatVersion = version;
}
protected override void ParseStreamInto(LineBufferedReader stream, T output)
2018-04-13 17:19:50 +08:00
{
Section section = Section.None;
string line;
2019-04-01 11:16:05 +08:00
2018-04-13 17:19:50 +08:00
while ((line = stream.ReadLine()) != null)
{
if (ShouldSkipLine(line))
continue;
if (line.StartsWith('[') && line.EndsWith(']'))
2018-04-13 17:19:50 +08:00
{
2019-12-14 20:54:22 +08:00
if (!Enum.TryParse(line[1..^1], out section))
2018-04-13 17:19:50 +08:00
{
2019-08-12 00:42:05 +08:00
Logger.Log($"Unknown section \"{line}\" in \"{output}\"");
2018-04-13 17:19:50 +08:00
section = Section.None;
}
2020-03-30 16:18:09 +08:00
OnBeginNewSection(section);
2018-04-13 17:19:50 +08:00
continue;
}
2019-08-07 18:33:54 +08:00
try
{
ParseLine(output, section, line);
}
catch (Exception e)
{
2019-08-12 00:42:05 +08:00
Logger.Log($"Failed to process line \"{line}\" into \"{output}\": {e.Message}", LoggingTarget.Runtime, LogLevel.Important);
2019-08-07 18:33:54 +08:00
}
2018-04-13 17:19:50 +08:00
}
}
protected virtual bool ShouldSkipLine(string line) => string.IsNullOrWhiteSpace(line) || line.AsSpan().TrimStart().StartsWith("//".AsSpan(), StringComparison.Ordinal);
2018-04-13 17:19:50 +08:00
2020-03-30 16:18:09 +08:00
/// <summary>
/// Invoked when a new <see cref="Section"/> has been entered.
/// </summary>
/// <param name="section">The entered <see cref="Section"/>.</param>
protected virtual void OnBeginNewSection(Section section)
{
}
2018-04-13 17:19:50 +08:00
protected virtual void ParseLine(T output, Section section, string line)
{
line = StripComments(line);
2018-04-13 17:19:50 +08:00
switch (section)
{
case Section.Colours:
HandleColours(output, line);
2018-04-13 17:19:50 +08:00
return;
}
}
protected string StripComments(string line)
{
2018-10-17 09:53:21 +08:00
var index = line.AsSpan().IndexOf("//".AsSpan());
if (index > 0)
return line.Substring(0, index);
2019-02-28 12:31:40 +08:00
return line;
}
2018-04-13 17:19:50 +08:00
protected void HandleColours<TModel>(TModel output, string line)
2018-04-13 17:19:50 +08:00
{
var pair = SplitKeyVal(line);
bool isCombo = pair.Key.StartsWith(@"Combo");
string[] split = pair.Value.Split(',');
2018-04-13 17:19:50 +08:00
if (split.Length != 3 && split.Length != 4)
throw new InvalidOperationException($@"Color specified in incorrect format (should be R,G,B or R,G,B,A): {pair.Value}");
2018-04-13 17:19:50 +08:00
2018-10-05 10:55:59 +08:00
Color4 colour;
2018-10-05 10:55:59 +08:00
try
{
2018-10-05 11:06:24 +08:00
colour = new Color4(byte.Parse(split[0]), byte.Parse(split[1]), byte.Parse(split[2]), split.Length == 4 ? byte.Parse(split[3]) : (byte)255);
2018-10-05 10:55:59 +08:00
}
2019-04-25 16:36:17 +08:00
catch
{
2018-04-13 17:19:50 +08:00
throw new InvalidOperationException(@"Color must be specified with 8-bit integer components");
}
2018-04-13 17:19:50 +08:00
if (isCombo)
{
if (!(output is IHasComboColours tHasComboColours)) return;
tHasComboColours.AddComboColours(colour);
2018-04-13 17:19:50 +08:00
}
else
{
if (!(output is IHasCustomColours tHasCustomColours)) return;
2019-02-28 12:31:40 +08:00
2018-04-13 17:19:50 +08:00
tHasCustomColours.CustomColours[pair.Key] = colour;
}
}
protected KeyValuePair<string, string> SplitKeyVal(string line, char separator = ':')
{
var split = line.Split(separator, 2);
2018-04-13 17:19:50 +08:00
return new KeyValuePair<string, string>
(
split[0].Trim(),
split.Length > 1 ? split[1].Trim() : string.Empty
);
}
protected string CleanFilename(string path) => path.Trim('"').ToStandardisedPath();
2018-04-13 17:19:50 +08:00
protected enum Section
{
None,
General,
Editor,
Metadata,
Difficulty,
Events,
TimingPoints,
Colours,
HitObjects,
Variables,
2020-03-30 16:18:09 +08:00
Fonts,
Mania
2018-04-13 17:19:50 +08:00
}
internal class LegacyDifficultyControlPoint : DifficultyControlPoint
{
public LegacyDifficultyControlPoint()
{
2019-10-30 14:51:09 +08:00
SpeedMultiplierBindable.Precision = double.Epsilon;
}
}
internal class LegacySampleControlPoint : SampleControlPoint
2018-06-28 17:20:43 +08:00
{
public int CustomSampleBank;
2019-06-30 20:58:30 +08:00
public override HitSampleInfo ApplyTo(HitSampleInfo hitSampleInfo)
2018-06-28 17:20:43 +08:00
{
2019-06-30 20:58:30 +08:00
var baseInfo = base.ApplyTo(hitSampleInfo);
2018-06-28 17:20:43 +08:00
if (string.IsNullOrEmpty(baseInfo.Suffix) && CustomSampleBank > 1)
baseInfo.Suffix = CustomSampleBank.ToString();
2018-06-28 17:20:43 +08:00
return baseInfo;
}
public override bool EquivalentTo(ControlPoint other) =>
2019-10-27 10:35:45 +08:00
base.EquivalentTo(other) && other is LegacySampleControlPoint otherTyped &&
CustomSampleBank == otherTyped.CustomSampleBank;
2018-06-28 17:20:43 +08:00
}
2018-04-13 17:19:50 +08:00
}
}