internal override Task <Stream> PlatformOpenReadAsync()
{
var url = NSUrl.FromBookmarkData(bookmark, 0, null, out var isStale, out var error);
if (error != null)
{
throw new NSErrorException(error);
}
url.StartAccessingSecurityScopedResource();
if (isStale)
{
var newBookmark = url.CreateBookmarkData(NSUrlBookmarkCreationOptions.SuitableForBookmarkFile, Array.Empty <string>(), null, out error);
if (error != null)
{
throw new NSErrorException(error);
}
UpdateBookmark(url, newBookmark);
}
var fileStream = File.OpenRead(FullPath);
Stream stream = new SecurityScopedStream(fileStream, url);
return(Task.FromResult(stream));
}
//public static NSUrl LastUrl;
public static (NSUrl NewUrl, NSData Bookmark) GetBookmark(this NSUrl url)
{
var bookmarksObj = NSUserDefaults.StandardUserDefaults.ValueForKey(new NSString("Bookmarks")) as NSDictionary;
var nsBookmarks = bookmarksObj?.MutableCopy() as NSMutableDictionary ?? new NSMutableDictionary();
//var bookmarks = new List<NSData>();
foreach (var key in nsBookmarks.Keys)
//for (uint i = 0; i < nsBookmarks.Count; i++)
// bookmarks.Add(nsBookmarks.GetItem<NSData>(i));
//foreach (var bookmark in bookmarks)
{
var bookmark = nsBookmarks[key] as NSData;
var bookmarkUrl = NSUrl.FromBookmarkData(bookmark,
NSUrlBookmarkResolutionOptions.WithoutUI |
NSUrlBookmarkResolutionOptions.WithSecurityScope,
null,
out bool isStale,
out NSError error1
);
if (bookmarkUrl != null && error1 == null)
{
if (bookmarkUrl.Path.TrimEnd('/') == url.Path.TrimEnd('/'))
{
if (isStale)
{
if (url.CreateBookmark() is NSData freshBookmark)
{
//LastUrl = bookmarkUrl;
return(bookmarkUrl, freshBookmark);
}
return(null, null);
}
//LastUrl = bookmarkUrl;
return(bookmarkUrl, bookmark);
}
}
else
{
if (error1 != null)
{
Console.WriteLine("Bookmark error: Bookmark for url [" + url + "] gave error [" + error1.Description + "] when trying to convert to URL.");
}
//nsBookmarks.RemoveObject((nint)nsBookmarks.IndexOf(bookmark));
nsBookmarks.Remove(key);
NSUserDefaults.StandardUserDefaults.SetValueForKey(nsBookmarks, new NSString("Bookmarks"));
}
}
return(null, null);
}
private NSUrl?GetBookmarkedUrl(string bookmark)
{
var url = NSUrl.FromBookmarkData(new NSData(bookmark, NSDataBase64DecodingOptions.None),
NSUrlBookmarkResolutionOptions.WithoutUI, null, out var isStale, out var error);
if (isStale)
{
Logger.TryGet(LogEventLevel.Warning, LogArea.IOSPlatform)?.Log(this, "Stale bookmark detected");
}
if (error != null)
{
throw new NSErrorException(error);
}
return(url);
}