/// <summary>
/// Gets the folder that has the specified absolute path in the file system.
/// </summary>
/// <param name="path">
/// The absolute path in the file system (not the Uri) of the folder to get.
/// </param>
/// <returns>
/// When this method completes successfully, it returns an IAppFolder that represents the specified folder.
/// </returns>
public static async Task <IStorageFolder> GetFolderFromPathAsync(string path)
{
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
IStorageFolder resultParentFolder;
if (Directory.Exists(path))
{
var directoryInfo = new DirectoryInfo(path);
if (directoryInfo.Parent != null && directoryInfo.Parent.Exists)
{
resultParentFolder = await GetFolderFromPathAsync(directoryInfo.Parent.FullName);
}
else
{
resultParentFolder = null;
}
}
else
{
return(null);
}
var resultFolder = new StorageFolder(resultParentFolder, path);
return(resultFolder);
}
/// <inheritdoc />
public async Task MoveAndReplaceAsync(IStorageFile fileToReplace)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(this.Name, "Cannot move a file that does not exist.");
}
if (fileToReplace == null)
{
throw new ArgumentNullException(nameof(fileToReplace));
}
if (!fileToReplace.Exists)
{
throw new StorageItemNotFoundException(
fileToReplace.Name,
"Cannot move to and replace a file that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
var newPath = fileToReplace.Path;
File.Delete(newPath);
File.Move(this.Path, newPath);
this.Path = newPath;
this.Parent = fileToReplace.Parent;
}
/// <inheritdoc />
public async Task <IStorageFolder> GetFolderAsync(string name, bool createIfNotExists)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot get a folder from a folder that does not exist.");
}
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException(nameof(name));
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
var folderPath = System.IO.Path.Combine(this.Path, name);
if (!Directory.Exists(folderPath))
{
if (createIfNotExists)
{
return(await this.CreateFolderAsync(name));
}
throw new StorageItemNotFoundException(name, "The folder could not be found in the folder.");
}
return(new StorageFolder(this, folderPath));
}
/// <summary>
/// Gets an IStorageFile object to represent the file at the specified path.
/// </summary>
/// <param name="path">
/// The path of the file to get an IStorageFile to represent.
/// </param>
/// <returns>
/// When this method completes, it returns the file as an IStorageFile.
/// </returns>
public static async Task <IStorageFile> GetFileFromPathAsync(string path)
{
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
IStorageFolder resultFileParentFolder;
if (File.Exists(path))
{
var fileInfo = new FileInfo(path);
if (fileInfo.Directory != null && fileInfo.Directory.Exists)
{
resultFileParentFolder = await StorageFolder.GetFolderFromPathAsync(fileInfo.Directory.FullName);
}
else
{
resultFileParentFolder = null;
}
}
else
{
return(null);
}
var resultFile = new StorageFile(resultFileParentFolder, path);
return(resultFile);
}
/// <inheritdoc />
public async Task RenameAsync(string desiredName, NameCollisionOption option)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(this.Name, "Cannot rename a file that does not exist.");
}
if (string.IsNullOrWhiteSpace(desiredName))
{
throw new ArgumentNullException(nameof(desiredName));
}
if (desiredName.Equals(this.Name, StringComparison.CurrentCultureIgnoreCase))
{
throw new ArgumentException("The desired new name is the same as the current name.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
var fileInfo = new FileInfo(this.Path);
if (fileInfo.Directory == null)
{
throw new InvalidOperationException("This file cannot be renamed.");
}
string newPath = System.IO.Path.Combine(fileInfo.Directory.FullName, desiredName);
switch (option)
{
case NameCollisionOption.GenerateUniqueName:
newPath = System.IO.Path.Combine(
fileInfo.Directory.FullName,
string.Format("{0}-{1}", desiredName, Guid.NewGuid()));
fileInfo.MoveTo(newPath);
break;
case NameCollisionOption.ReplaceExisting:
if (File.Exists(newPath))
{
File.Delete(newPath);
}
fileInfo.MoveTo(newPath);
break;
default:
if (File.Exists(newPath))
{
throw new StorageItemCreationException(
desiredName,
"A file with the same name already exists.");
}
fileInfo.MoveTo(newPath);
break;
}
this.Path = newPath;
}
/// <inheritdoc />
public async Task DeleteAsync()
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(this.Name, "Cannot delete a file that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
File.Delete(this.Path);
}
/// <inheritdoc />
public async Task <IStorageFolder> CreateFolderAsync(string desiredName, CreationCollisionOption options)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot create a folder in a folder that does not exist.");
}
if (string.IsNullOrWhiteSpace(desiredName))
{
throw new ArgumentNullException(nameof(desiredName));
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
var folderPath = System.IO.Path.Combine(this.Path, desiredName);
if (Directory.Exists(folderPath))
{
switch (options)
{
case CreationCollisionOption.GenerateUniqueName:
desiredName = string.Format("{0}-{1}", desiredName, Guid.NewGuid());
folderPath = System.IO.Path.Combine(this.Path, desiredName);
CreateFolder(folderPath);
break;
case CreationCollisionOption.ReplaceExisting:
if (Directory.Exists(folderPath))
{
Directory.Delete(folderPath);
}
CreateFolder(folderPath);
break;
case CreationCollisionOption.FailIfExists:
if (Directory.Exists(folderPath))
{
throw new StorageItemCreationException(
desiredName,
"A folder with the same name already exists.");
}
CreateFolder(folderPath);
break;
}
}
else
{
CreateFolder(folderPath);
}
return(new StorageFolder(this, folderPath));
}
/// <inheritdoc />
public async Task <IReadOnlyList <IStorageFolder> > GetFoldersAsync()
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot get folders from a folder that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
return(Directory.GetDirectories(this.Path).Select(folderPath => new StorageFolder(this, folderPath)).ToList());
}
/// <inheritdoc />
public async Task <IDictionary <string, object> > GetPropertiesAsync()
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot get properties for a folder that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
// ToDo, current not implemented.
return(new Dictionary <string, object>());
}
/// <inheritdoc />
public async Task <IStorageItem> GetItemAsync(string name)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot get an item from a folder that does not exist.");
}
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException(nameof(name));
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
IStorageItem storageItem = null;
try
{
storageItem = await this.GetFileAsync(name);
}
catch (Exception ex)
{
#if DEBUG
System.Diagnostics.Debug.WriteLine(ex.Message);
#endif
}
try
{
storageItem = await this.GetFolderAsync(name);
}
catch (Exception ex)
{
#if DEBUG
System.Diagnostics.Debug.WriteLine(ex.Message);
#endif
}
if (storageItem == null || !storageItem.Exists)
{
throw new StorageItemNotFoundException(name, "The item could not be found in the folder.");
}
return(storageItem);
}
/// <inheritdoc />
public async Task <IDictionary <string, object> > GetPropertiesAsync()
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot get properties for a file that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
var props = new Dictionary <string, object>();
// ToDo; find a library or implement metadata extraction from file.
return(props);
}
/// <inheritdoc />
public async Task <Stream> OpenAsync(FileAccessMode accessMode)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(this.Name, "Cannot open a file that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
switch (accessMode)
{
case FileAccessMode.Read:
return(File.OpenRead(this.Path));
case FileAccessMode.ReadWrite:
return(File.Open(this.Path, FileMode.Open, FileAccess.ReadWrite));
default:
throw new StorageFileIOException(this.Name, "The file could not be opened.");
}
}
/// <inheritdoc />
public async Task <IReadOnlyList <IStorageItem> > GetItemsAsync()
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(
this.Name,
"Cannot get items from a folder that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
var files = await this.GetFilesAsync();
var folders = await this.GetFoldersAsync();
var items = new List <IStorageItem>();
items.AddRange(files);
items.AddRange(folders);
return(items);
}
/// <inheritdoc />
public async Task CopyAndReplaceAsync(IStorageFile fileToReplace)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(this.Name, "Cannot copy a file that does not exist.");
}
if (fileToReplace == null)
{
throw new ArgumentNullException(nameof(fileToReplace));
}
if (!fileToReplace.Exists)
{
throw new StorageItemNotFoundException(
fileToReplace.Name,
"Cannot copy to and replace a file that does not exist.");
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
File.Copy(this.Path, fileToReplace.Path, true);
}
/// <inheritdoc />
public async Task MoveAsync(
IStorageFolder destinationFolder,
string desiredNewName,
NameCollisionOption option)
{
if (!this.Exists)
{
throw new StorageItemNotFoundException(this.Name, "Cannot move a file that does not exist.");
}
if (destinationFolder == null)
{
throw new ArgumentNullException(nameof(destinationFolder));
}
if (!destinationFolder.Exists)
{
throw new StorageItemNotFoundException(
destinationFolder.Name,
"Cannot move a file to a folder that does not exist.");
}
if (string.IsNullOrWhiteSpace(desiredNewName))
{
throw new ArgumentNullException(nameof(desiredNewName));
}
await TaskSchedulerAwaiter.NewTaskSchedulerAwaiter();
string newPath = System.IO.Path.Combine(destinationFolder.Path, desiredNewName);
switch (option)
{
case NameCollisionOption.GenerateUniqueName:
newPath = System.IO.Path.Combine(
destinationFolder.Path,
string.Format("{0}-{1}", Guid.NewGuid(), desiredNewName));
File.Move(this.Path, newPath);
break;
case NameCollisionOption.ReplaceExisting:
if (File.Exists(newPath))
{
File.Delete(newPath);
}
File.Move(this.Path, newPath);
break;
default:
if (File.Exists(newPath))
{
throw new StorageItemCreationException(
desiredNewName,
"A file with the same name already exists.");
}
File.Move(this.Path, newPath);
break;
}
this.Path = newPath;
}
public AwaiterWrapper(TaskSchedulerAwaiter awaiter)
{
isCompleted = () => awaiter.IsCompleted;
onCompleted = c => awaiter.OnCompleted(c);
getResult = () => awaiter.GetResult();
}
public AwaiterWrapper(TaskSchedulerAwaiter awaiter)
{
isCompleted = () => awaiter.IsCompleted;
onCompleted = c => awaiter.OnCompleted(c);
getResult = () => awaiter.GetResult();
}
