82 lines
1.7 KiB
C#
82 lines
1.7 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2016 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using System.IO;
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using OpenRA.Primitives;
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namespace OpenRA.FileSystem
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{
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public sealed class D2kSoundResources : IReadOnlyPackage
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{
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struct Entry
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{
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public readonly uint Offset;
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public readonly uint Length;
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public Entry(uint offset, uint length)
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{
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Offset = offset;
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Length = length;
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}
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}
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public string Name { get; private set; }
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public IEnumerable<string> Contents { get { return index.Keys; } }
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readonly Stream s;
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readonly Dictionary<string, Entry> index = new Dictionary<string, Entry>();
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public D2kSoundResources(FileSystem context, string filename)
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{
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Name = filename;
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s = context.Open(filename);
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try
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{
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var headerLength = s.ReadUInt32();
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while (s.Position < headerLength + 4)
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{
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var name = s.ReadASCIIZ();
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var offset = s.ReadUInt32();
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var length = s.ReadUInt32();
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index.Add(name, new Entry(offset, length));
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}
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}
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catch
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{
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Dispose();
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throw;
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}
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}
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public Stream GetStream(string filename)
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{
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Entry e;
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if (!index.TryGetValue(filename, out e))
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return null;
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s.Seek(e.Offset, SeekOrigin.Begin);
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return new MemoryStream(s.ReadBytes((int)e.Length));
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}
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public bool Contains(string filename)
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{
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return index.ContainsKey(filename);
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}
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public void Dispose()
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{
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s.Dispose();
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}
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}
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}
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