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Lidarr/NzbDrone.Common/DiskProvider.cs

279 lines
8.2 KiB

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using NLog;
namespace NzbDrone.Common
{
public class DiskProvider
{
enum TransferAction
{
Copy,
Move
}
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
out ulong lpFreeBytesAvailable,
out ulong lpTotalNumberOfBytes,
out ulong lpTotalNumberOfFreeBytes);
private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
public virtual DateTime GetLastDirectoryWrite(string path)
{
if (!FolderExists(path))
{
throw new DirectoryNotFoundException("Directory doesn't exist. " + path);
}
var dirFiles = GetFiles(path, SearchOption.AllDirectories).ToList();
if (!dirFiles.Any())
{
return new DirectoryInfo(path).LastWriteTimeUtc;
}
return dirFiles.Select(f => new FileInfo(f))
.Max(c => c.LastWriteTimeUtc);
}
public virtual DateTime GetLastFileWrite(string path)
{
if (!FileExists(path))
throw new FileNotFoundException("File doesn't exist: " + path);
return new FileInfo(path).LastWriteTimeUtc;
}
public virtual bool FolderExists(string path)
{
return Directory.Exists(path);
}
public virtual bool FileExists(string path)
{
return File.Exists(path);
}
public virtual string[] GetDirectories(string path)
{
return Directory.GetDirectories(path);
}
public virtual string[] GetFiles(string path, SearchOption searchOption)
{
return Directory.GetFiles(path, "*.*", searchOption);
}
public virtual long GetDirectorySize(string path)
{
return GetFiles(path, SearchOption.AllDirectories).Sum(e => new FileInfo(e).Length);
}
public virtual long GetSize(string path)
{
if (!FileExists(path))
throw new FileNotFoundException("File doesn't exist: " + path);
var fi = new FileInfo(path);
return fi.Length;
}
public virtual String CreateDirectory(string path)
{
return Directory.CreateDirectory(path).FullName;
}
public virtual void CopyDirectory(string source, string target)
{
TransferDirectory(source, target, TransferAction.Copy);
}
public virtual void MoveDirectory(string source, string destination)
{
try
{
TransferDirectory(source, destination, TransferAction.Move);
Directory.Delete(source, true);
}
catch (Exception e)
{
e.Data.Add("Source", source);
e.Data.Add("Destination", destination);
throw;
}
}
private void TransferDirectory(string source, string target, TransferAction transferAction)
{
Logger.Trace("{0} {1} -> {2}", transferAction, source, target);
var sourceFolder = new DirectoryInfo(source);
var targetFolder = new DirectoryInfo(target);
if (!targetFolder.Exists)
{
targetFolder.Create();
}
foreach (var subDir in sourceFolder.GetDirectories())
{
TransferDirectory(subDir.FullName, Path.Combine(target, subDir.Name), transferAction);
}
foreach (var sourceFile in sourceFolder.GetFiles("*.*", SearchOption.TopDirectoryOnly))
{
var destFile = Path.Combine(target, sourceFile.Name);
switch (transferAction)
{
case TransferAction.Copy:
{
sourceFile.CopyTo(destFile, true);
break;
}
case TransferAction.Move:
{
MoveFile(sourceFile.FullName, destFile);
break;
}
}
}
}
public virtual void DeleteFile(string path)
{
Logger.Trace("Deleting file: {0}", path);
File.Delete(path);
}
public virtual void MoveFile(string source, string destination)
{
if (PathEquals(source, destination))
{
Logger.Warn("Source and destination can't be the same {0}", source);
return;
}
if (FileExists(destination))
{
DeleteFile(destination);
}
File.Move(source, destination);
}
public virtual void DeleteFolder(string path, bool recursive)
{
Directory.Delete(path, recursive);
}
public virtual DateTime DirectoryDateCreated(string path)
{
return Directory.GetCreationTime(path);
}
public virtual IEnumerable<FileInfo> GetFileInfos(string path, string pattern, SearchOption searchOption)
{
return new DirectoryInfo(path).EnumerateFiles(pattern, searchOption);
}
public virtual void InheritFolderPermissions(string filename)
{
var fs = File.GetAccessControl(filename);
fs.SetAccessRuleProtection(false, false);
File.SetAccessControl(filename, fs);
}
public virtual ulong FreeDiskSpace(DirectoryInfo directoryInfo)
{
if (!directoryInfo.Exists)
throw new DirectoryNotFoundException();
ulong freeBytesAvailable;
ulong totalNumberOfBytes;
ulong totalNumberOfFreeBytes;
bool success = GetDiskFreeSpaceEx(directoryInfo.FullName, out freeBytesAvailable, out totalNumberOfBytes,
out totalNumberOfFreeBytes);
if (!success)
throw new System.ComponentModel.Win32Exception();
return freeBytesAvailable;
}
public virtual string ReadAllText(string filePath)
{
return File.ReadAllText(filePath);
}
public virtual void WriteAllText(string filename, string contents)
{
File.WriteAllText(filename, contents);
}
public static bool PathEquals(string firstPath, string secondPath)
{
return String.Equals(firstPath.NormalizePath(), secondPath.NormalizePath(), StringComparison.InvariantCultureIgnoreCase);
}
public virtual void FileSetLastWriteTimeUtc(string path, DateTime dateTime)
{
File.SetLastWriteTimeUtc(path, dateTime);
}
public virtual void DirectorySetLastWriteTimeUtc(string path, DateTime dateTime)
{
Directory.SetLastWriteTimeUtc(path, dateTime);
}
public virtual bool IsFolderLocked(string path)
{
var files = GetFileInfos(path, "*.*", SearchOption.AllDirectories);
foreach(var fileInfo in files)
{
if (IsFileLocked(fileInfo))
return true;
}
return false;
}
public virtual bool IsFileLocked(FileInfo file)
{
FileStream stream = null;
try
{
stream = file.Open(FileMode.Open, FileAccess.Read, FileShare.None);
}
catch (IOException)
{
return true;
}
finally
{
if (stream != null)
stream.Close();
}
//file is not locked
return false;
}
public virtual bool IsChildOfPath(string child, string parent)
{
if (Path.GetFullPath(child).StartsWith(Path.GetFullPath(parent)))
return true;
return false;
}
}
}