jellyfin-server/MediaBrowser.Controller/IO/FileSystem.cs
2013-04-28 01:29:27 -04:00

249 lines
8.2 KiB
C#

using MediaBrowser.Model.Logging;
using System;
using System.Collections.Specialized;
using System.IO;
using System.Text;
namespace MediaBrowser.Controller.IO
{
/// <summary>
/// Class FileSystem
/// </summary>
public static class FileSystem
{
/// <summary>
/// Gets the file system info.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>FileSystemInfo.</returns>
public static FileSystemInfo GetFileSystemInfo(string path)
{
// Take a guess to try and avoid two file system hits, but we'll double-check by calling Exists
if (Path.HasExtension(path))
{
var fileInfo = new FileInfo(path);
if (fileInfo.Exists)
{
return fileInfo;
}
return new DirectoryInfo(path);
}
else
{
var fileInfo = new DirectoryInfo(path);
if (fileInfo.Exists)
{
return fileInfo;
}
return new FileInfo(path);
}
}
/// <summary>
/// Gets the creation time UTC.
/// </summary>
/// <param name="info">The info.</param>
/// <param name="logger">The logger.</param>
/// <returns>DateTime.</returns>
public static DateTime GetLastWriteTimeUtc(FileSystemInfo info, ILogger logger)
{
// This could throw an error on some file systems that have dates out of range
try
{
return info.LastAccessTimeUtc;
}
catch (Exception ex)
{
logger.ErrorException("Error determining LastAccessTimeUtc for {0}", ex, info.FullName);
return DateTime.MinValue;
}
}
/// <summary>
/// Gets the creation time UTC.
/// </summary>
/// <param name="info">The info.</param>
/// <param name="logger">The logger.</param>
/// <returns>DateTime.</returns>
public static DateTime GetCreationTimeUtc(FileSystemInfo info, ILogger logger)
{
// This could throw an error on some file systems that have dates out of range
try
{
return info.CreationTimeUtc;
}
catch (Exception ex)
{
logger.ErrorException("Error determining CreationTimeUtc for {0}", ex, info.FullName);
return DateTime.MinValue;
}
}
/// <summary>
/// The space char
/// </summary>
private const char SpaceChar = ' ';
/// <summary>
/// The invalid file name chars
/// </summary>
private static readonly char[] InvalidFileNameChars = Path.GetInvalidFileNameChars();
/// <summary>
/// Takes a filename and removes invalid characters
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.ArgumentNullException">filename</exception>
public static string GetValidFilename(string filename)
{
if (string.IsNullOrEmpty(filename))
{
throw new ArgumentNullException("filename");
}
foreach (var c in InvalidFileNameChars)
{
filename = filename.Replace(c, SpaceChar);
}
return filename;
}
/// <summary>
/// Resolves the shortcut.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.ArgumentNullException">filename</exception>
public static string ResolveShortcut(string filename)
{
if (string.IsNullOrEmpty(filename))
{
throw new ArgumentNullException("filename");
}
var link = new ShellLink();
((IPersistFile)link).Load(filename, NativeMethods.STGM_READ);
// TODO: if I can get hold of the hwnd call resolve first. This handles moved and renamed files.
// ((IShellLinkW)link).Resolve(hwnd, 0)
var sb = new StringBuilder(NativeMethods.MAX_PATH);
WIN32_FIND_DATA data;
((IShellLinkW)link).GetPath(sb, sb.Capacity, out data, 0);
return sb.ToString();
}
/// <summary>
/// Creates a shortcut file pointing to a specified path
/// </summary>
/// <param name="shortcutPath">The shortcut path.</param>
/// <param name="target">The target.</param>
/// <exception cref="System.ArgumentNullException">shortcutPath</exception>
public static void CreateShortcut(string shortcutPath, string target)
{
if (string.IsNullOrEmpty(shortcutPath))
{
throw new ArgumentNullException("shortcutPath");
}
if (string.IsNullOrEmpty(target))
{
throw new ArgumentNullException("target");
}
var link = new ShellLink();
((IShellLinkW)link).SetPath(target);
((IPersistFile)link).Save(shortcutPath, true);
}
/// <summary>
/// Determines whether the specified filename is shortcut.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns><c>true</c> if the specified filename is shortcut; otherwise, <c>false</c>.</returns>
/// <exception cref="System.ArgumentNullException">filename</exception>
public static bool IsShortcut(string filename)
{
if (string.IsNullOrEmpty(filename))
{
throw new ArgumentNullException("filename");
}
return string.Equals(Path.GetExtension(filename), ".lnk", StringComparison.OrdinalIgnoreCase);
}
/// <summary>
/// Copies all.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="target">The target.</param>
/// <exception cref="System.ArgumentNullException">source</exception>
/// <exception cref="System.ArgumentException">The source and target directories are the same</exception>
public static void CopyAll(string source, string target)
{
if (string.IsNullOrEmpty(source))
{
throw new ArgumentNullException("source");
}
if (string.IsNullOrEmpty(target))
{
throw new ArgumentNullException("target");
}
if (source.Equals(target, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentException("The source and target directories are the same");
}
// Check if the target directory exists, if not, create it.
if (!Directory.Exists(target))
{
Directory.CreateDirectory(target);
}
foreach (var file in Directory.EnumerateFiles(source))
{
File.Copy(file, Path.Combine(target, Path.GetFileName(file)), true);
}
// Copy each subdirectory using recursion.
foreach (var dir in Directory.EnumerateDirectories(source))
{
CopyAll(dir, Path.Combine(target, Path.GetFileName(dir)));
}
}
/// <summary>
/// Parses the ini file.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>NameValueCollection.</returns>
public static NameValueCollection ParseIniFile(string path)
{
var values = new NameValueCollection();
foreach (var line in File.ReadAllLines(path))
{
var data = line.Split('=');
if (data.Length < 2) continue;
var key = data[0];
var value = data.Length == 2 ? data[1] : string.Join(string.Empty, data, 1, data.Length - 1);
values[key] = value;
}
return values;
}
}
}