/// <summary>
/// Create all required <see cref="BeatmapInfo"/>s for the provided archive.
/// </summary>
private List <BeatmapInfo> createBeatmapDifficulties(List <BeatmapSetFileInfo> files)
{
var beatmapInfos = new List <BeatmapInfo>();
foreach (var file in files.Where(f => f.Filename.EndsWith(".osu")))
{
using (var raw = Files.Store.GetStream(file.FileInfo.StoragePath))
using (var ms = new MemoryStream()) //we need a memory stream so we can seek
using (var sr = new LineBufferedReader(ms))
{
raw.CopyTo(ms);
ms.Position = 0;
var decoder = Decoder.GetDecoder <Beatmap>(sr);
IBeatmap beatmap = decoder.Decode(sr);
string hash = ms.ComputeSHA2Hash();
if (beatmapInfos.Any(b => b.Hash == hash))
{
continue;
}
beatmap.BeatmapInfo.Path = file.Filename;
beatmap.BeatmapInfo.Hash = hash;
beatmap.BeatmapInfo.MD5Hash = ms.ComputeMD5Hash();
var ruleset = rulesets.GetRuleset(beatmap.BeatmapInfo.RulesetID);
beatmap.BeatmapInfo.Ruleset = ruleset;
// TODO: this should be done in a better place once we actually need to dynamically update it.
beatmap.BeatmapInfo.StarDifficulty = ruleset?.CreateInstance().CreateDifficultyCalculator(new DummyConversionBeatmap(beatmap)).Calculate().StarRating ?? 0;
beatmap.BeatmapInfo.Length = calculateLength(beatmap);
beatmap.BeatmapInfo.BPM = beatmap.ControlPointInfo.BPMMode;
beatmapInfos.Add(beatmap.BeatmapInfo);
}
}
return(beatmapInfos);
}
protected override BeatmapSetInfo CreateModel(ArchiveReader reader)
{
// let's make sure there are actually .osu files to import.
string mapName = reader.Filenames.FirstOrDefault(f => f.EndsWith(".osu", StringComparison.OrdinalIgnoreCase));
if (string.IsNullOrEmpty(mapName))
{
Logger.Log($"No beatmap files found in the beatmap archive ({reader.Name}).", LoggingTarget.Database);
return(null);
}
Beatmap beatmap;
using (var stream = new LineBufferedReader(reader.GetStream(mapName)))
beatmap = Decoder.GetDecoder <Beatmap>(stream).Decode(stream);
return(new BeatmapSetInfo
{
OnlineID = beatmap.BeatmapInfo.BeatmapSet?.OnlineID,
Metadata = beatmap.Metadata,
DateAdded = DateTimeOffset.UtcNow
});
}
private IBeatmap decode(byte[] state)
{
using (var stream = new MemoryStream(state))
using (var reader = new LineBufferedReader(stream))
return(Decoder.GetDecoder <Beatmap>(reader).Decode(reader));
}
private LoaderWorkingBeatmap(LineBufferedReader reader)
: this(Decoder.GetDecoder <Beatmap>(reader).Decode(reader))
{
}