jellyfin/MediaBrowser.Controller/Library/ItemResolveArgs.cs
2013-02-20 20:33:05 -05:00

398 lines
13 KiB
C#

using MediaBrowser.Common.IO;
using MediaBrowser.Common.Win32;
using MediaBrowser.Controller.Entities;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
namespace MediaBrowser.Controller.Library
{
/// <summary>
/// These are arguments relating to the file system that are collected once and then referred to
/// whenever needed. Primarily for entity resolution.
/// </summary>
public class ItemResolveArgs : EventArgs
{
/// <summary>
/// Gets the file system children.
/// </summary>
/// <value>The file system children.</value>
public IEnumerable<WIN32_FIND_DATA> FileSystemChildren
{
get { return FileSystemDictionary.Values; }
}
/// <summary>
/// Gets or sets the file system dictionary.
/// </summary>
/// <value>The file system dictionary.</value>
public Dictionary<string, WIN32_FIND_DATA> FileSystemDictionary { get; set; }
/// <summary>
/// Gets or sets the parent.
/// </summary>
/// <value>The parent.</value>
public Folder Parent { get; set; }
/// <summary>
/// Gets or sets the file info.
/// </summary>
/// <value>The file info.</value>
public WIN32_FIND_DATA FileInfo { get; set; }
/// <summary>
/// Gets or sets the path.
/// </summary>
/// <value>The path.</value>
public string Path { get; set; }
/// <summary>
/// Gets a value indicating whether this instance is directory.
/// </summary>
/// <value><c>true</c> if this instance is directory; otherwise, <c>false</c>.</value>
public bool IsDirectory
{
get
{
return FileInfo.dwFileAttributes.HasFlag(FileAttributes.Directory);
}
}
/// <summary>
/// Gets a value indicating whether this instance is hidden.
/// </summary>
/// <value><c>true</c> if this instance is hidden; otherwise, <c>false</c>.</value>
public bool IsHidden
{
get
{
return FileInfo.IsHidden;
}
}
/// <summary>
/// Gets a value indicating whether this instance is system file.
/// </summary>
/// <value><c>true</c> if this instance is system file; otherwise, <c>false</c>.</value>
public bool IsSystemFile
{
get
{
return FileInfo.IsSystemFile;
}
}
/// <summary>
/// Gets a value indicating whether this instance is vf.
/// </summary>
/// <value><c>true</c> if this instance is vf; otherwise, <c>false</c>.</value>
public bool IsVf
{
// we should be considered a virtual folder if we are a child of one of the children of the system root folder.
// this is a bit of a trick to determine that... the directory name of a sub-child of the root will start with
// the root but not be equal to it
get
{
if (!IsDirectory)
{
return false;
}
var parentDir = FileInfo.Path != null ? System.IO.Path.GetDirectoryName(FileInfo.Path) ?? string.Empty : string.Empty;
return (parentDir.Length > Kernel.Instance.ApplicationPaths.RootFolderPath.Length
&& parentDir.StartsWith(Kernel.Instance.ApplicationPaths.RootFolderPath, StringComparison.OrdinalIgnoreCase));
}
}
/// <summary>
/// Gets a value indicating whether this instance is physical root.
/// </summary>
/// <value><c>true</c> if this instance is physical root; otherwise, <c>false</c>.</value>
public bool IsPhysicalRoot
{
get
{
return IsDirectory && Path.Equals(Kernel.Instance.ApplicationPaths.RootFolderPath, StringComparison.OrdinalIgnoreCase);
}
}
/// <summary>
/// Gets a value indicating whether this instance is root.
/// </summary>
/// <value><c>true</c> if this instance is root; otherwise, <c>false</c>.</value>
public bool IsRoot
{
get
{
return Parent == null;
}
}
/// <summary>
/// Gets or sets the additional locations.
/// </summary>
/// <value>The additional locations.</value>
private List<string> AdditionalLocations { get; set; }
/// <summary>
/// Adds the additional location.
/// </summary>
/// <param name="path">The path.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public void AddAdditionalLocation(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException();
}
if (AdditionalLocations == null)
{
AdditionalLocations = new List<string>();
}
AdditionalLocations.Add(path);
}
/// <summary>
/// Gets the physical locations.
/// </summary>
/// <value>The physical locations.</value>
public IEnumerable<string> PhysicalLocations
{
get
{
var paths = string.IsNullOrWhiteSpace(Path) ? new string[] {} : new[] {Path};
return AdditionalLocations == null ? paths : paths.Concat(AdditionalLocations);
}
}
/// <summary>
/// Store these to reduce disk access in Resolvers
/// </summary>
/// <value>The metadata file dictionary.</value>
private Dictionary<string, WIN32_FIND_DATA> MetadataFileDictionary { get; set; }
/// <summary>
/// Gets the metadata files.
/// </summary>
/// <value>The metadata files.</value>
public IEnumerable<WIN32_FIND_DATA> MetadataFiles
{
get
{
if (MetadataFileDictionary != null)
{
return MetadataFileDictionary.Values;
}
return new WIN32_FIND_DATA[] {};
}
}
/// <summary>
/// Adds the metadata file.
/// </summary>
/// <param name="path">The path.</param>
/// <exception cref="System.IO.FileNotFoundException"></exception>
public void AddMetadataFile(string path)
{
var file = FileSystem.GetFileData(path);
if (!file.HasValue)
{
throw new FileNotFoundException(path);
}
AddMetadataFile(file.Value);
}
/// <summary>
/// Adds the metadata file.
/// </summary>
/// <param name="fileInfo">The file info.</param>
public void AddMetadataFile(WIN32_FIND_DATA fileInfo)
{
AddMetadataFiles(new[] { fileInfo });
}
/// <summary>
/// Adds the metadata files.
/// </summary>
/// <param name="files">The files.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public void AddMetadataFiles(IEnumerable<WIN32_FIND_DATA> files)
{
if (files == null)
{
throw new ArgumentNullException();
}
if (MetadataFileDictionary == null)
{
MetadataFileDictionary = new Dictionary<string, WIN32_FIND_DATA>(StringComparer.OrdinalIgnoreCase);
}
foreach (var file in files)
{
MetadataFileDictionary[file.cFileName] = file;
}
}
/// <summary>
/// Gets the name of the file system entry by.
/// </summary>
/// <param name="name">The name.</param>
/// <returns>System.Nullable{WIN32_FIND_DATA}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public WIN32_FIND_DATA? GetFileSystemEntryByName(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException();
}
return GetFileSystemEntryByPath(System.IO.Path.Combine(Path, name));
}
/// <summary>
/// Gets the file system entry by path.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>System.Nullable{WIN32_FIND_DATA}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public WIN32_FIND_DATA? GetFileSystemEntryByPath(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException();
}
if (FileSystemDictionary != null)
{
WIN32_FIND_DATA entry;
if (FileSystemDictionary.TryGetValue(path, out entry))
{
return entry;
}
}
return null;
}
/// <summary>
/// Gets the meta file by path.
/// </summary>
/// <param name="path">The path.</param>
/// <returns>System.Nullable{WIN32_FIND_DATA}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public WIN32_FIND_DATA? GetMetaFileByPath(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException();
}
if (MetadataFileDictionary != null)
{
WIN32_FIND_DATA entry;
if (MetadataFileDictionary.TryGetValue(System.IO.Path.GetFileName(path), out entry))
{
return entry;
}
}
return GetFileSystemEntryByPath(path);
}
/// <summary>
/// Gets the name of the meta file by.
/// </summary>
/// <param name="name">The name.</param>
/// <returns>System.Nullable{WIN32_FIND_DATA}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public WIN32_FIND_DATA? GetMetaFileByName(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException();
}
if (MetadataFileDictionary != null)
{
WIN32_FIND_DATA entry;
if (MetadataFileDictionary.TryGetValue(name, out entry))
{
return entry;
}
}
return GetFileSystemEntryByName(name);
}
/// <summary>
/// Determines whether [contains meta file by name] [the specified name].
/// </summary>
/// <param name="name">The name.</param>
/// <returns><c>true</c> if [contains meta file by name] [the specified name]; otherwise, <c>false</c>.</returns>
public bool ContainsMetaFileByName(string name)
{
return GetMetaFileByName(name).HasValue;
}
/// <summary>
/// Determines whether [contains file system entry by name] [the specified name].
/// </summary>
/// <param name="name">The name.</param>
/// <returns><c>true</c> if [contains file system entry by name] [the specified name]; otherwise, <c>false</c>.</returns>
public bool ContainsFileSystemEntryByName(string name)
{
return GetFileSystemEntryByName(name).HasValue;
}
#region Equality Overrides
/// <summary>
/// Determines whether the specified <see cref="System.Object" /> is equal to this instance.
/// </summary>
/// <param name="obj">The object to compare with the current object.</param>
/// <returns><c>true</c> if the specified <see cref="System.Object" /> is equal to this instance; otherwise, <c>false</c>.</returns>
public override bool Equals(object obj)
{
return (Equals(obj as ItemResolveArgs));
}
/// <summary>
/// Returns a hash code for this instance.
/// </summary>
/// <returns>A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.</returns>
public override int GetHashCode()
{
return Path.GetHashCode();
}
/// <summary>
/// Equalses the specified args.
/// </summary>
/// <param name="args">The args.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
protected bool Equals(ItemResolveArgs args)
{
if (args != null)
{
if (args.Path == null && Path == null) return true;
return args.Path != null && args.Path.Equals(Path, StringComparison.OrdinalIgnoreCase);
}
return false;
}
#endregion
}
}