Innovenergy_trunk/csharp/Lib/Utils/FileSystem.cs

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2023-02-16 12:57:06 +00:00
using CliWrap;
using CliWrap.Buffered;
namespace InnovEnergy.Lib.Utils;
public class FileSystem
{
private static readonly String ProcName = Utils.ExecutingProcessName;
private static readonly String TempPath = Path.GetTempPath();
private static Command Find { get; } = Cli.Wrap("find");
private static Command Stat { get; } = Cli.Wrap("stat");
private static Random Rng { get; } = new Random();
public static FileSystem Local { get; } = new FileSystem();
public static FileSystem OnHost(SshHost? host) => new FileSystem(host);
private SshHost? Host { get; }
private FileSystem(SshHost? host = null)
{
Host = host;
}
public Task<IReadOnlyList<String>> GetFiles(String path)
{
return GetFiles(path, FileType.RegularFile);
}
public Task<IReadOnlyList<String>> GetFilesRecursive(String path)
{
return GetFiles(path, FileType.RegularFile, maxDepth: Int16.MaxValue);
}
public Task<IReadOnlyList<String>> GetDirectories(String path)
{
return GetFiles(path, FileType.Directory);
}
public async Task<IReadOnlyList<String>> GetFiles(String path, FileType fileType, Int32 maxDepth = 1)
{
var result = await Find
.WithArguments($"find {path} -maxdepth {maxDepth} -type {(Char)fileType}")
.OnHost(Host)
.ExecuteBufferedAsync();
return result.StandardOutput.SplitLines();
}
public Boolean FileExists(String path)
{
var stat = StatF(path);
return stat.ExitCode == 0 && stat.StandardOutput.Trim() == "regular file";
}
public Boolean DirectoryExists(String path)
{
var stat = StatF(path);
return stat.ExitCode == 0 && stat.StandardOutput.Trim() == "directory";
}
private BufferedCommandResult StatF(String path)
{
return Stat
.WithArguments($"-c %F {path}")
.OnHost(Host)
.ExecuteBufferedAsync()
.Task
.Result;
}
[Obsolete]
public static Disposable<String> CreateTmpDir()
{
var path = GetRandomTempPath();
Directory.CreateDirectory(path);
void Dispose()
{
try
{
Directory.Delete(path, recursive: true);
}
catch
{
// ignored
}
}
return Disposable.Create(path, Dispose);
}
[Obsolete]
private static String GetRandomTempPath()
{
lock (Rng)
{
return $"{TempPath}{ProcName}.{Rng.Next():x8}";
}
}
[Obsolete]
public static Disposable<String> CreateTempFile(String fileName)
{
var dir = CreateTmpDir();
var file = dir.Value.AppendPath(fileName);
return Disposable.Create(file, dir.Dispose);
}
}
public enum FileType : Byte
{
BlockDevice = (Byte) 'b',
CharacterDevice = (Byte) 'c',
Directory = (Byte) 'd',
Pipe = (Byte) 'p',
RegularFile = (Byte) 'f',
SymbolicLink = (Byte) 'l',
}