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rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.
11. Patents.
A "contributor" is a copyright holder who authorizes use under this
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work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
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purposes of this definition, "control" includes the right to grant
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In the following three paragraphs, a "patent license" is any express
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If you convey a covered work, knowingly relying on a patent license,
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then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
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consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
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covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
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If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
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you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
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to the third party based on the extent of your activity of conveying
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for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
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otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
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to collect a royalty for further conveying from those to whom you convey
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13. Use with the GNU Affero General Public License.
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14. Revised Versions of this License.
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THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
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If the disclaimer of warranty and limitation of liability provided
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24
OverlayTest/.vscode/launch.json vendored Normal file
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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": ".NET Core Launch (console)",
"type": "coreclr",
"request": "launch",
"preLaunchTask": "build",
"program": "${workspaceFolder}/bin/Debug/net7.0/OverlayTest.dll",
"args": [],
"cwd": "${workspaceFolder}",
"console": "internalConsole",
"stopAtEntry": false
},
{
"name": ".NET Core Attach",
"type": "coreclr",
"request": "attach"
}
]
}

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OverlayTest/.vscode/tasks.json vendored Normal file
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{
"version": "2.0.0",
"tasks": [
{
"label": "build",
"command": "dotnet",
"type": "process",
"args": [
"build",
"${workspaceFolder}/OverlayTest.csproj",
"/property:GenerateFullPaths=true",
"/consoleloggerparameters:NoSummary"
],
"problemMatcher": "$msCompile"
},
{
"label": "publish",
"command": "dotnet",
"type": "process",
"args": [
"publish",
"${workspaceFolder}/OverlayTest.csproj",
"/property:GenerateFullPaths=true",
"/consoleloggerparameters:NoSummary"
],
"problemMatcher": "$msCompile"
},
{
"label": "watch",
"command": "dotnet",
"type": "process",
"args": [
"watch",
"run",
"--project",
"${workspaceFolder}/OverlayTest.csproj"
],
"problemMatcher": "$msCompile"
}
]
}

19
OverlayTest/OverlayTest.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Tesses.VirtualFilesystem" Version="1.0.2"/>
<PackageReference Include="Tesses.VirtualFilesystem.Local" Version="1.0.0" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\Tesses.VirtualFilesystem.Overlay\Tesses.VirtualFilesystem.Overlay.csproj" />
</ItemGroup>
</Project>

133
OverlayTest/Program.cs Normal file
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using Tesses.VirtualFilesystem;
using Tesses.VirtualFilesystem.Extensions;
using Tesses.VirtualFilesystem.Filesystems;
using System.Text;
LocalFileSystem fs = new LocalFileSystem();
OverlayFilesystem overlay = new OverlayFilesystem(fs.GetSubdirFilesystem(Special.CurDir / "lower"),fs.GetSubdirFilesystem(Special.CurDir / "upper"));
UnixPath path = Special.Root;
int hasGone=0;
Func<string?> Prompt = ()=>{
Console.Write(path.ToString());
Console.Write(": ");
return Console.ReadLine();
};
Func<string,string[]> ParseArgs = (argStr)=>{
List<string> args = new List<string>();
StringBuilder b= new StringBuilder();
bool isString=false;
for(int i = 0;i<argStr.Length;i++)
{
if(argStr[i] == '\\')
{
i++;
b.Append(argStr[i]);
}
{
if(isString)
{
if(argStr[0] == '\"')
{
isString=false;
}
else
{
b.Append(argStr[i]);
}
}
else
{
if(argStr[i] == '\"')
{
isString=true;
}else
if(argStr[i] == ' ')
{
if(b.Length >0)
{
args.Add(b.ToString());
b.Clear();
}
}else
{
b.Append(argStr[i]);
}
}
}
}
if(b.Length >0)
{
args.Add(b.ToString());
b.Clear();
}
return args.ToArray();
};
var read = Prompt();
while(read != null)
{
string[] _args = ParseArgs(read);
switch(_args[0])
{
case "exit":
Environment.Exit(0);
break;
case "ls":
await foreach(var files in overlay.EnumerateFileSystemEntriesAsync(_args.Length > 1 ? _args[1] : path))
{
Console.WriteLine(files.Name);
}
break;
case "cat":
if(_args.Length > 1)
{
Console.Write(await overlay.ReadAllTextAsync(_args[1]));
}
break;
case "cd":
if(_args.Length > 1)
path = _args[1];
break;
case "mkdir":
if(_args.Length > 1)
{
await overlay.CreateDirectoryAsync(path / _args[1]);
}
break;
case "touch":
if(_args.Length > 1)
{
UnixPath p = path / _args[1];
if(!await overlay.FileExistsAsync(p) && !await overlay.DirectoryExistsAsync(p) && !await overlay.SymlinkExistsAsync(p))
{
await overlay.WriteAllTextAsync(p,"");
}
await overlay.SetLastWriteTimeAsync(p,DateTime.Now);
}
break;
case "append":
{
UnixPath p = path / _args[1];
using(var srcF = await overlay.OpenAsync(p,FileMode.Append,FileAccess.Write,FileShare.Read))
{
using(var sw = new StreamWriter(srcF))
{
sw.WriteLine(_args[2]);
}
}
}
break;
}
read = Prompt();
}

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OverlayTest/lower/dir/file.txt Normal file
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Jordan

1
OverlayTest/lower/jeff.txt Normal file
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Joel

1
OverlayTest/upper/dir/jim.txt Normal file
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@ -0,0 +1 @@
FER

1
OverlayTest/upper/jeff.txt Normal file
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@ -0,0 +1 @@
Arnold

1
OverlayTest/upper/joel.txt Normal file
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@ -0,0 +1 @@
Jimmy

1
README.md Normal file
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@ -0,0 +1 @@
# TODO Write this README

527
Tesses.VirtualFilesystem.Overlay/Class1.cs Normal file
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using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.CompilerServices;
using System.Threading;
using System.Threading.Tasks;
namespace Tesses.VirtualFilesystem.Filesystems
{
public class OverlayFilesystem : AsyncFileSystem
{
IVirtualFilesystem lower;
IVirtualFilesystem upper;
public OverlayFilesystem(IVirtualFilesystem lower,IVirtualFilesystem upper)
{
this.lower = lower;
this.upper = upper;
}
public override async Task CreateDirectoryAsync(UnixPath directory, CancellationToken token = default)
{
await upper.CreateDirectoryAsync(directory,token);
}
public override async Task DeleteDirectoryAsync(UnixPath path, CancellationToken token = default)
{
if(await upper.DirectoryExistsAsync(path,token))
await upper.DeleteDirectoryAsync(path,token);
}
public override async Task DeleteFileAsync(UnixPath path, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token))
await upper.DeleteFileAsync(path,token);
}
public override async Task<bool> DirectoryExistsAsync(UnixPath path, CancellationToken token = default)
{
return await lower.DirectoryExistsAsync(path,token) || await upper.DirectoryExistsAsync(path,token);
}
public override async Task<bool> SymlinkExistsAsync(UnixPath file, CancellationToken token = default)
{
return await SymlinkExists2Async(lower,file,token) || await SymlinkExists2Async(upper,file,token);
}
public override bool CanHandleSymlinks(UnixPath path)
{
if(upper.FileExists(path) || upper.DirectoryExists(path) || (upper.CanHandleSymlinks(path) && upper.SymlinkExists(path)))
{
return upper.CanHandleSymlinks(path);
}
return lower.CanHandleSymlinks(path);
}
private async Task<bool> SymlinkExists2Async(IVirtualFilesystem fs,UnixPath p,CancellationToken token=default)
{
return fs.CanHandleSymlinks(p) && await fs.SymlinkExistsAsync(p,token);
}
public override async Task CreateSymlinkAsync(UnixPath src, UnixPath dest, CancellationToken token = default)
{
if(upper.CanHandleSymlinks(dest))
{
await upper.CreateSymlinkAsync(src,dest,token);
}
}
public override async Task CreateHardlinkAsync(UnixPath src,UnixPath dest,CancellationToken token=default)
{
if(await upper.FileExistsAsync(src,token))
{
await upper.CreateHardlinkAsync(src,dest,token);
}
else
{
if(await upper.FileExistsAsync(dest,token) || !await lower.FileExistsAsync(src,token)) return;
if(dest.ParentIsRoot)
{
await upper.CreateDirectoryAsync(dest.Parent);
}
using(var srcS = await lower.OpenAsync(src,FileMode.Open,FileAccess.Read,FileShare.Read))
{
using(var destS = await upper.OpenAsync(dest,FileMode.Create,FileAccess.Write,FileShare.Read))
{
await srcS.CopyToAsync(destS);
}
}
}
}
public override async Task SetAttributesAsync(UnixPath path, FileAttributes attributes, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path,token) || await SymlinkExists2Async(upper,path,token))
{
await upper.SetAttributesAsync(path, attributes, token);
}
else
{
await lower.SetAttributesAsync(path, attributes,token);
}
}
public override bool CanWatch(UnixPath path)
{
if(upper.DirectoryExists(path) && lower.DirectoryExists(path))
{
return upper.CanWatch(path) || lower.CanWatch(path);
}
else if(upper.DirectoryExists(path))
{
return upper.CanWatch(path);
}
else if(lower.DirectoryExists(path))
{
return lower.CanWatch(path);
}
else
{
return false;
}
}
public override IVirtualWatcher WatchDirectory(UnixPath dir)
{
if(upper.DirectoryExists(dir) && lower.DirectoryExists(dir))
{
return new DoubleWatcher(lower.WatchDirectory(dir),upper.WatchDirectory(dir));
}
else if(upper.DirectoryExists(dir))
{
return upper.WatchDirectory(dir);
}
else if(lower.DirectoryExists(dir))
{
return lower.WatchDirectory(dir);
}
else
{
return null;
}
}
public override async Task<UnixPath> ReadLinkAsync(UnixPath file, CancellationToken token = default)
{
if(await SymlinkExists2Async(upper,file,token))
{
return await upper.ReadLinkAsync(file,token);
}
return await lower.ReadLinkAsync(file,token);
}
public override async IAsyncEnumerable<UnixPath> EnumerateFileSystemEntriesAsync(UnixPath path, [EnumeratorCancellation] CancellationToken token = default)
{
List<UnixPath> entries = new List<UnixPath>();
if(await lower.DirectoryExistsAsync(path,token))
await foreach(var item in lower.EnumerateFileSystemEntriesAsync(path,token))
{
entries.Add(item);
yield return item;
}
if(await upper.DirectoryExistsAsync(path,token))
await foreach(var item in upper.EnumerateFileSystemEntriesAsync(path,token))
{
bool canYield=true;
foreach(var entry in entries)
{
if(entry.MyPathEquals(item)){canYield=false; break;};
}
if(canYield) yield return item;
}
}
public override async Task<bool> FileExistsAsync(UnixPath path, CancellationToken token = default)
{
return await lower.FileExistsAsync(path,token) || await upper.FileExistsAsync(path,token);
}
public override async Task<DateTime> GetCreationTimeAsync(UnixPath path, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path,token) || await SymlinkExists2Async(upper,path,token))
{
return await upper.GetCreationTimeAsync(path,token);
}
return await lower.GetCreationTimeAsync(path,token);
}
public override async Task<DateTime> GetLastAccessTimeAsync(UnixPath path, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path,token) || await SymlinkExists2Async(upper,path,token))
{
return await upper.GetLastAccessTimeAsync(path,token);
}
return await lower.GetLastAccessTimeAsync(path,token);
}
public override async Task<DateTime> GetLastWriteTimeAsync(UnixPath path, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path,token) || await SymlinkExists2Async(upper,path,token))
{
return await upper.GetLastWriteTimeAsync(path,token);
}
return await lower.GetLastWriteTimeAsync(path,token);
}
public override async Task MoveDirectoryAsync(UnixPath src, UnixPath dest)
{
if(!dest.IsRoot)
{
await upper.CreateDirectoryAsync(dest);
}
await foreach(var dir in this.EnumerateDirectoriesAsync(src))
{
await MoveDirectoryAsync(dir,dest / dir.Name);
}
await foreach(var file in this.EnumerateFilesAsync(src))
{
await MoveFileAsync(file,dest / file.Name);
}
if(await upper.DirectoryExistsAsync(src))
{
await upper.DeleteDirectoryAsync(src);
}
}
public override async Task MoveFileAsync(UnixPath src, UnixPath dest)
{
if(!dest.ParentIsRoot)
{
await upper.CreateDirectoryAsync(dest.Parent);
}
if(await upper.FileExistsAsync(src))
{
await upper.MoveFileAsync(src,dest);
}
else
{
using(var srcS = await lower.OpenAsync(src,FileMode.Open,FileAccess.Read,FileShare.Read))
{
using(var destS = await upper.OpenAsync(dest,FileMode.Create,FileAccess.ReadWrite,FileShare.Read))
{
await srcS.CopyToAsync(destS);
}
}
}
}
public override async Task<Stream> OpenAsync(UnixPath path, FileMode mode, FileAccess access, FileShare share, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token))
{
return await upper.OpenAsync(path,mode,access,share,token);
}
if(await lower.FileExistsAsync(path,token))
{
if(access != FileAccess.Read && mode != FileMode.CreateNew && mode != FileMode.Truncate && mode != FileMode.Create)
{
var strm = await lower.OpenAsync(path,mode,access,share,token);
return new CowStream(strm,path,lower,upper,mode,access,share);
}
return await lower.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read);
}
return await upper.OpenAsync(path,mode,access,share,token);
}
public override async Task SetCreationTimeAsync(UnixPath path, DateTime time, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path) || await SymlinkExists2Async(upper,path,token))
{
await upper.SetCreationTimeAsync(path,time,token);
}
else if(await lower.FileExistsAsync(path,token) || await lower.DirectoryExistsAsync(path) || await SymlinkExists2Async(lower,path,token))
{
if(await lower.FileExistsAsync(path,token))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
using(var src = await lower.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read,token))
{
using(var dest = await upper.OpenAsync(path,FileMode.Create,FileAccess.Write,FileShare.Read))
{
await src.CopyToAsync(dest);
}
}
await upper.SetCreationTimeAsync(path,time,token);
}
else if(await lower.DirectoryExistsAsync(path,token))
{
await upper.CreateDirectoryAsync(path,token);
await upper.SetCreationTimeAsync(path,time,token);
}
else if(await SymlinkExists2Async(lower,path,token))
{
if(upper.CanHandleSymlinks(path))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
await upper.CreateSymlinkAsync(await lower.ReadLinkAsync(path,token),path,token);
await upper.SetCreationTimeAsync(path,time,token);
}
}
}
else
{
await upper.SetCreationTimeAsync(path,time,token);
}
}
public override async Task SetLastAccessTimeAsync(UnixPath path, DateTime time, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path) || await SymlinkExists2Async(upper,path,token))
{
await upper.SetLastAccessTimeAsync(path,time,token);
}
else if(await lower.FileExistsAsync(path,token) || await lower.DirectoryExistsAsync(path) || await SymlinkExists2Async(lower,path,token))
{
if(await lower.FileExistsAsync(path,token))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
using(var src = await lower.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read,token))
{
using(var dest = await upper.OpenAsync(path,FileMode.Create,FileAccess.Write,FileShare.Read))
{
await src.CopyToAsync(dest);
}
}
await upper.SetLastAccessTimeAsync(path,time,token);
}
else if(await lower.DirectoryExistsAsync(path,token))
{
await upper.CreateDirectoryAsync(path,token);
await upper.SetLastAccessTimeAsync(path,time,token);
}
else if(await SymlinkExists2Async(lower,path,token))
{
if(upper.CanHandleSymlinks(path))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
await upper.CreateSymlinkAsync(await lower.ReadLinkAsync(path,token),path,token);
await upper.SetLastAccessTimeAsync(path,time,token);
}
}
}
else
{
await upper.SetLastAccessTimeAsync(path,time,token);
}
}
public override async Task SetLastWriteTimeAsync(UnixPath path, DateTime time, CancellationToken token = default)
{
if(await upper.FileExistsAsync(path,token) || await upper.DirectoryExistsAsync(path) || await SymlinkExists2Async(upper,path,token))
{
await upper.SetLastWriteTimeAsync(path,time,token);
}
else if(await lower.FileExistsAsync(path,token) || await lower.DirectoryExistsAsync(path,token) || await SymlinkExists2Async(lower,path,token))
{
if(await lower.FileExistsAsync(path,token))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
using(var src = await lower.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read,token))
{
using(var dest = await upper.OpenAsync(path,FileMode.Create,FileAccess.Write,FileShare.Read))
{
await src.CopyToAsync(dest);
}
}
await upper.SetLastWriteTimeAsync(path,time,token);
}
else if(await lower.DirectoryExistsAsync(path,token))
{
await upper.CreateDirectoryAsync(path,token);
await upper.SetLastWriteTimeAsync(path,time,token);
}
else if(await SymlinkExists2Async(lower,path,token))
{
if(upper.CanHandleSymlinks(path))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
await upper.CreateSymlinkAsync(await lower.ReadLinkAsync(path,token),path,token);
await upper.SetLastWriteTimeAsync(path,time,token);
}
}
}else
{
await upper.SetLastWriteTimeAsync(path,time,token);
}
}
private class CowStream : Stream
{
private FileMode mode;
private FileAccess access;
private FileShare share;
private Stream strm;
private UnixPath path;
private IVirtualFilesystem upper;
private IVirtualFilesystem lower;
private bool inLower=true;
public CowStream(Stream strm, UnixPath path,IVirtualFilesystem lower, IVirtualFilesystem upper,FileMode mode,FileAccess access,FileShare share)
{
this.lower=lower;
this.strm = strm;
this.path = path;
this.upper = upper;
this.mode = mode;
this.access = access;
this.share = share;
}
public override bool CanRead => strm.CanRead;
public override bool CanSeek => strm.CanSeek;
public override bool CanWrite => strm.CanWrite;
public override long Length => strm.Length;
public override long Position { get => strm.Position; set => strm.Position = value;}
public override void Flush()
{
CowIt();
strm.Flush();
}
public override int Read(byte[] buffer, int offset, int count)
{
return strm.Read(buffer,offset,count);
}
public override long Seek(long offset, SeekOrigin origin)
{
return strm.Seek(offset,origin);
}
public override void SetLength(long value)
{
CowIt();
strm.SetLength(value);
}
public override async Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
{
return await strm.ReadAsync(buffer, offset,count);
//return base.ReadAsync(buffer, offset, count, cancellationToken);
}
public override int ReadByte()
{
return strm.ReadByte();
}
public override void WriteByte(byte value)
{
CowIt();
strm.WriteByte(value);
}
public override void Write(byte[] buffer, int offset, int count)
{
CowIt();
strm.Write(buffer,offset,count);
}
public override async Task FlushAsync(CancellationToken cancellationToken)
{
await CowItAsync(cancellationToken);
await strm.FlushAsync(cancellationToken);
}
public override async Task WriteAsync(byte[] buffer, int offset, int count,CancellationToken token)
{
await CowItAsync(token);
await strm.WriteAsync(buffer,offset,count,token);
}
public override void Close()
{
strm.Close();
}
private async Task CowItAsync(CancellationToken token)
{
if(inLower)
{
var pos = strm.Position;
strm.Dispose();
using(var srcStrm = await lower.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read,token))
{
if(!path.ParentIsRoot)
await upper.CreateDirectoryAsync(path.Parent);
using(var destStrm = await upper.OpenAsync(path,FileMode.Create,FileAccess.Write,FileShare.Write,token))
await srcStrm.CopyToAsync(destStrm,4096,token);
}
strm =await upper.OpenAsync(path,mode,access,share,token);
strm.Position = pos;
inLower=false;
}
}
private void CowIt()
{
if(inLower)
{
var pos = strm.Position;
strm.Dispose();
using(var srcStrm = lower.Open(path,FileMode.Open,FileAccess.Read,FileShare.Read))
{
if(!path.ParentIsRoot)
upper.CreateDirectory(path.Parent);
using(var destStrm = upper.Open(path,FileMode.Create,FileAccess.Write,FileShare.Write))
srcStrm.CopyTo(destStrm);
}
strm =upper.Open(path,mode,access,share);
strm.Position = pos;
inLower=false;
}
}
}
}
}

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using System;
using System.IO;
namespace Tesses.VirtualFilesystem.Filesystems
{
internal class DoubleWatcher : IVirtualWatcher
{
public DoubleWatcher(IVirtualWatcher left,IVirtualWatcher right)
{
Left = left;
Right = right;
}
public int InternalBufferSize { get => Left.InternalBufferSize; set {
Left.InternalBufferSize = value;
Right.InternalBufferSize=value;
} }
public NotifyFilters NotifyFilter {
get => Left.NotifyFilter;
set{
Left.NotifyFilter=value;
Right.NotifyFilter=value;
}
}
public bool EnableRaisingEvents { get => Left.EnableRaisingEvents; set {
Left.EnableRaisingEvents=value; Right.EnableRaisingEvents=value;
} }
public string Filter { get => Left.Filter; set {
Left.Filter=value;
Right.Filter = value;
}}
public bool IncludeSubdirectories { get => Left.IncludeSubdirectories; set {
Left.IncludeSubdirectories=value;
Right.IncludeSubdirectories=value;
}}
public IVirtualWatcher Left { get; }
public IVirtualWatcher Right { get; }
public event EventHandler<VirtualWatcherChangedArgs> Changed
{
add {
Left.Changed+=value;
Right.Changed+=value;
}
remove {
Left.Changed-=value;
Right.Changed-=value;
}
}
public event EventHandler<VirtualWatcherChangedArgs> Created
{
add{
Left.Created+=value;
Right.Created+=value;
}
remove{
Left.Created -= value;
Right.Created-=value;
}
}
public event EventHandler<VirtualWatcherChangedArgs> Deleted
{
add{
Left.Deleted+=value;
Right.Deleted+=value;
}
remove{
Left.Deleted-=value;
Right.Deleted-=value;
}
}
public event EventHandler<VirtualWatcherRenamedEventArgs> Renamed
{
add{
Left.Renamed +=value;
Right.Renamed+=value;
}
remove{
Left.Renamed -=value;
Right.Renamed-=value;
}
}
public event EventHandler<ErrorEventArgs> Error
{
add{
Left.Error += value;
Right.Error += value;
}
remove{
Left.Error -= value;
Right.Error -= value;
}
}
}
}

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Tesses.VirtualFilesystem.Overlay/Tesses.VirtualFilesystem.Overlay.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<LangVersion>8.0</LangVersion>
<IsPackable>true</IsPackable>
<PackageId>Tesses.VirtualFilesystem.Overlay</PackageId>
<Author>Mike Nolan</Author>
<Company>Tesses</Company>
<Version>1.0.0</Version>
<AssemblyVersion>1.0.0</AssemblyVersion>
<FileVersion>1.0.0</FileVersion>
<Description>Overlay filesystem for Tesses.VirtualFilesystem</Description>
<PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
<PackageTags>VFS, Filesystem, VirtualFilesystem</PackageTags>
<RepositoryUrl>https://gitlab.tesses.net/tesses50/tesses-vfs-extras</RepositoryUrl>
<LangVersion>8.0</LangVersion>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Tesses.VirtualFileSystem" Version="1.0.2" />
<PackageReference Include="Tesses.VirtualFileSystem.Base" Version="1.0.0" />
</ItemGroup>
</Project>

100
Tesses.YouTubeDownloader.VFS/Class1.cs Normal file
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using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Tesses.VirtualFilesystem;
namespace Tesses.YouTubeDownloader.VFS
{
public class TYTDVFS : TYTDStorage
{
IVirtualFilesystem fs;
public TYTDVFS(IVirtualFilesystem fs)
{
this.fs =fs;
}
public override async Task<Stream> CreateAsync(string path)
{
return await fs.OpenAsync(path,FileMode.Create,FileAccess.Write,FileShare.Inheritable);
}
public override void CreateDirectory(string path)
{
fs.CreateDirectory(path);
}
public override void DeleteDirectory(string dir, bool recursive = false)
{
fs.DeleteDirectory(dir, recursive);
}
public override void DeleteFile(string file)
{
fs.DeleteFile(file);
}
public override async Task<bool> DirectoryExistsAsync(string path)
{
return await fs.DirectoryExistsAsync(path);
}
public override async IAsyncEnumerable<string> EnumerateDirectoriesAsync(string path)
{
await foreach(var dir in fs.EnumerateDirectoriesAsync(path))
{
yield return dir.Name;
}
}
public override IAsyncEnumerable<string> EnumerateFilesAsync(string path)
{
await foreach(var file in fs.EnumerateFilesAsync(path))
{
yield return file.Name;
}
}
public override async Task<bool> FileExistsAsync(string path)
{
return await fs.FileExistsAsync(path);
}
public override void MoveDirectory(string src, string dest)
{
fs.MoveDirectory(src,dest);
}
public override async Task<Stream> OpenOrCreateAsync(string path)
{
return await fs.OpenAsync(path,FileMode.OpenOrCreate,FileAccess.ReadWrite,FileShare.Inheritable);
}
public override async Task<Stream> OpenReadAsync(string path)
{
return await fs.OpenAsync(path,FileMode.Open,FileAccess.Read,FileShare.Read);
}
public override void RenameFile(string src, string dest)
{
fs.MoveFile(src,dest);
}
public override IEnumerable<string> EnumerateDirectories(string path)
{
foreach(var item in fs.EnumerateDirectories(path)) yield return item.Name;
}
public override IEnumerable<string> EnumerateFiles(string path)
{
foreach(var item in fs.EnumerateFiles(path)) yield return item.Name;
}
public override bool DirectoryExists(string path)
{
return fs.DirectoryExists(path);
}
public new bool FileExists(string path)
{
return fs.FileExists(path);
}
}
}

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Tesses.YouTubeDownloader.VFS/Tesses.YouTubeDownloader.VFS.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<LangVersion>8.0</LangVersion>
<IsPackable>true</IsPackable>
<PackageId>Tesses.YouTubeDownloader.VFS</PackageId>
<Author>Mike Nolan</Author>
<Company>Tesses</Company>
<Version>1.0.0</Version>
<AssemblyVersion>1.0.0</AssemblyVersion>
<FileVersion>1.0.0</FileVersion>
<Description>Tesses.VirtualFileSystem for TYTD</Description>
<PackageLicenseExpression>GPL-3.0-only</PackageLicenseExpression>
<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
<PackageTags>VFS, Filesystem, VirtualFilesystem</PackageTags>
<RepositoryUrl>https://gitlab.tesses.net/tesses50/tesses-vfs-extras</RepositoryUrl>
<LangVersion>8.0</LangVersion>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Tesses.VirtualFilesystem" Version="1.0.2" />
<PackageReference Include="Tesses.VirtualFilesystem.base" Version="1.0.0" />
<PackageReference Include="Tesses.YouTubeDownloader" Version="2.0.2.4" />
</ItemGroup>
</Project>