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51 lines
1.4 KiB
C#
51 lines
1.4 KiB
C#
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using SharpCompress.Archives.Zip;
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namespace osu.Game.IO.Archives
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{
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public sealed class ZipArchiveReader : ArchiveReader
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{
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private readonly Stream archiveStream;
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private readonly ZipArchive archive;
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public ZipArchiveReader(Stream archiveStream, string name = null)
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: base(name)
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{
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this.archiveStream = archiveStream;
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archive = ZipArchive.Open(archiveStream);
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}
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public override Stream GetStream(string name)
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{
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ZipArchiveEntry entry = archive.Entries.SingleOrDefault(e => e.Key == name);
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if (entry == null)
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throw new FileNotFoundException();
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// allow seeking
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MemoryStream copy = new MemoryStream();
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using (Stream s = entry.OpenEntryStream())
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s.CopyTo(copy);
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copy.Position = 0;
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return copy;
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}
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public override void Dispose()
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{
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archive.Dispose();
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archiveStream.Dispose();
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}
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public override IEnumerable<string> Filenames => archive.Entries.Select(e => e.Key).ToArray();
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public override Stream GetUnderlyingStream() => archiveStream;
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}
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}
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