109 lines
3.3 KiB
C#
109 lines
3.3 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2018 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;
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using System.Collections.Generic;
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using System.IO;
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namespace OpenRA.FileSystem
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{
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public sealed class Folder : IReadWritePackage
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{
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readonly string path;
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public Folder(string path)
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{
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this.path = path;
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if (!Directory.Exists(path))
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Directory.CreateDirectory(path);
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}
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public string Name { get { return path; } }
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public IEnumerable<string> Contents
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{
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get
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{
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foreach (var filename in Directory.GetFiles(path, "*", SearchOption.TopDirectoryOnly))
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yield return Path.GetFileName(filename);
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foreach (var filename in Directory.GetDirectories(path))
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yield return Path.GetFileName(filename);
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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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try { return File.OpenRead(Path.Combine(path, filename)); }
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catch { return null; }
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}
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public bool Contains(string filename)
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{
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var combined = Path.Combine(path, filename);
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return combined.StartsWith(path, StringComparison.Ordinal) && File.Exists(combined);
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}
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public IReadOnlyPackage OpenPackage(string filename, FileSystem context)
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{
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var resolvedPath = Platform.ResolvePath(Path.Combine(Name, filename));
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if (Directory.Exists(resolvedPath))
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return new Folder(resolvedPath);
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// Zip files loaded from Folders (and *only* from Folders) can be read-write
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IReadWritePackage readWritePackage;
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if (ZipFileLoader.TryParseReadWritePackage(resolvedPath, out readWritePackage))
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return readWritePackage;
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// Other package types can be loaded normally
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IReadOnlyPackage package;
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var s = GetStream(filename);
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if (s == null)
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return null;
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if (context.TryParsePackage(s, filename, out package))
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return package;
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s.Dispose();
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return null;
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}
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public void Update(string filename, byte[] contents)
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{
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// HACK: ZipFiles can't be loaded as read-write from a stream, so we are
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// forced to bypass the parent package and load them with their full path
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// in FileSystem.OpenPackage. Their internal name therefore contains the
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// full parent path too. We need to be careful to not add a second path
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// prefix to these hacked packages.
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var filePath = filename.StartsWith(path) ? filename : Path.Combine(path, filename);
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Directory.CreateDirectory(Path.GetDirectoryName(filePath));
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using (var s = File.Create(filePath))
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s.Write(contents, 0, contents.Length);
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}
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public void Delete(string filename)
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{
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// HACK: ZipFiles can't be loaded as read-write from a stream, so we are
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// forced to bypass the parent package and load them with their full path
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// in FileSystem.OpenPackage. Their internal name therefore contains the
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// full parent path too. We need to be careful to not add a second path
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// prefix to these hacked packages.
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var filePath = filename.StartsWith(path) ? filename : Path.Combine(path, filename);
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if (Directory.Exists(filePath))
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Directory.Delete(filePath, true);
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else if (File.Exists(filePath))
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File.Delete(filePath);
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}
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public void Dispose() { }
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}
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}
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