private static async Task <IEnumerable <T> > WithFolder <T>(this StorageFolder folder, string relativeFolder, Func <StorageFolder, Task <IEnumerable <T> > > op) where T : IStorageItem
{
StorageFolder f = relativeFolder == String.Empty ?
folder :
await folder.GetFolderAsync(FileUtilsBase.WindowsSeparators(relativeFolder));
return(await op(f));
}
/// <summary>
/// The local file referenced by the URI, or null if the URI is not local.
/// </summary>
/// <param name="localUri">uri to local file</param>
/// <returns></returns>
public static async Task <StorageFile> GetFile(Uri localUri)
{
if (FileUtilsBase.IsLocalNonAppFile(localUri))
{
return(await StorageFile.GetFileFromPathAsync(localUri.LocalPath));
}
else if (FileUtilsBase.IsAppLocalFile(localUri))
{
return(await StorageFile.GetFileFromApplicationUriAsync(localUri));
}
else
{
return(null);
}
}
public override Uri UriFor(IStorageFile file)
{
var path = localStorageUriPrefix + FileUtilsBase.UnixSeparators(LocalPath(file));
return(new Uri(path));
}
/// <summary>
/// Must be overridden for special app folders, todo fix class hierarchy.
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
public virtual Uri UriFor(IStorageFile file)
{
var uriPath = FileUtilsBase.UnixSeparators(file.Path);
return(new Uri("file:///" + uriPath));
}
