osu/osu.Game/Beatmaps/Formats/LegacyDecoder.cs

151 lines
4.8 KiB
C#

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Collections.Generic;
using System.IO;
using osu.Game.Beatmaps.Legacy;
using osu.Game.Storyboards;
namespace osu.Game.Beatmaps.Formats
{
public abstract class LegacyDecoder : Decoder
{
public static void Register()
{
AddDecoder(@"osu file format v14", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v13", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v12", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v11", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v10", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v9", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v8", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v7", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v6", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v5", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v4", m => new LegacyBeatmapDecoder(m));
AddDecoder(@"osu file format v3", m => new LegacyBeatmapDecoder(m));
// TODO: differences between versions
}
protected int BeatmapVersion;
public override Decoder GetStoryboardDecoder() => new LegacyStoryboardDecoder(BeatmapVersion);
public override Beatmap DecodeBeatmap(StreamReader stream) => new LegacyBeatmap(base.DecodeBeatmap(stream));
protected override void ParseBeatmap(StreamReader stream, Beatmap beatmap)
{
throw new NotImplementedException();
}
protected override void ParseStoryboard(StreamReader stream, Storyboard storyboard)
{
throw new NotImplementedException();
}
protected void ParseContent(StreamReader stream)
{
Section section = Section.None;
string line;
while ((line = stream.ReadLine()) != null)
{
if (ShouldSkipLine(line))
continue;
// It's already set in ParseBeatmap... why do it again?
//if (line.StartsWith(@"osu file format v"))
//{
// Beatmap.BeatmapInfo.BeatmapVersion = int.Parse(line.Substring(17));
// continue;
//}
if (line.StartsWith(@"[") && line.EndsWith(@"]"))
{
if (!Enum.TryParse(line.Substring(1, line.Length - 2), out section))
throw new InvalidDataException($@"Unknown osu section {line}");
continue;
}
ProcessSection(section, line);
}
}
protected virtual bool ShouldSkipLine(string line)
{
if (string.IsNullOrWhiteSpace(line) || line.StartsWith("//"))
return true;
return false;
}
protected abstract void ProcessSection(Section section, string line);
protected KeyValuePair<string, string> SplitKeyVal(string line, char separator)
{
var split = line.Trim().Split(new[] { separator }, 2);
return new KeyValuePair<string, string>
(
split[0].Trim(),
split.Length > 1 ? split[1].Trim() : string.Empty
);
}
protected enum Section
{
None,
General,
Editor,
Metadata,
Difficulty,
Events,
TimingPoints,
Colours,
HitObjects,
Variables,
}
internal enum LegacySampleBank
{
None = 0,
Normal = 1,
Soft = 2,
Drum = 3
}
internal enum EventType
{
Background = 0,
Video = 1,
Break = 2,
Colour = 3,
Sprite = 4,
Sample = 5,
Animation = 6
}
internal enum LegacyOrigins
{
TopLeft,
Centre,
CentreLeft,
TopRight,
BottomCentre,
TopCentre,
Custom,
CentreRight,
BottomLeft,
BottomRight
};
internal enum StoryLayer
{
Background = 0,
Fail = 1,
Pass = 2,
Foreground = 3
}
}
}