osu/osu.Game/IO/Archives/ArchiveReader.cs
2021-12-31 01:52:01 +09:00

62 lines
1.7 KiB
C#

// 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.
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using osu.Framework.IO.Stores;
namespace osu.Game.IO.Archives
{
public abstract class ArchiveReader : IResourceStore<byte[]>
{
/// <summary>
/// Opens a stream for reading a specific file from this archive.
/// </summary>
public abstract Stream GetStream(string name);
public IEnumerable<string> GetAvailableResources() => Filenames;
public abstract void Dispose();
/// <summary>
/// The name of this archive (usually the containing filename).
/// </summary>
public readonly string Name;
protected ArchiveReader(string name)
{
Name = name;
}
public abstract IEnumerable<string> Filenames { get; }
public virtual byte[] Get(string name)
{
using (Stream input = GetStream(name))
{
if (input == null)
return null;
byte[] buffer = new byte[input.Length];
input.Read(buffer);
return buffer;
}
}
public async Task<byte[]> GetAsync(string name, CancellationToken cancellationToken = default)
{
using (Stream input = GetStream(name))
{
if (input == null)
return null;
byte[] buffer = new byte[input.Length];
await input.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
return buffer;
}
}
}
}