public static bool IsImage(this NSUrl url)
{
if (url.TryGetResource(NSUrl.TypeIdentifierKey, out var typeObj, out var error))
{
var typeIdentifier = (NSString)typeObj;
return(CGImageSource.TypeIdentifiers.Any(imageType => MobileCoreServices.UTType.ConformsTo(typeIdentifier, imageType)));
}
public void IsExcludedFromBackupKey()
{
//TestRuntime.AssertSystemVersion (PlatformName.MacOSX, 10, 8, throwIfOtherPlatform: false);
TestRuntime.AssertSystemVersion(PlatformName.MacOSX, 10, 9, throwIfOtherPlatform: false); // 10.8 fails DoNotBackupMe-1
TestRuntime.AssertSystemVersion(PlatformName.MacOSX, 10, 10, throwIfOtherPlatform: false); // 10.10 fails DoNotBackupMe-1
// NOTE: this test was failing with either NullReferenceException or InvalidCastException
// when we used CFBoolean as a NSObject (i.e. CFBoolean.TrueObject). The test order execution
// was important to track this down
NSObject value;
Assert.True(NSBundle.MainBundle.ExecutableUrl.TryGetResource(NSUrl.IsExcludedFromBackupKey, out value), "MainBundle");
Assert.That(value, Is.TypeOf(typeof(NSNumber)), "NSNumber");
Assert.That((int)(value as NSNumber), Is.EqualTo(0), "0");
string filename = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), $"DoNotBackupMe-NSUrl-{Process.GetCurrentProcess ().Id}");
try {
File.WriteAllText(filename, "not worth a bit");
using (NSUrl url = NSUrl.FromFilename(filename)) {
Assert.True(url.TryGetResource(NSUrl.IsExcludedFromBackupKey, out value));
Assert.That((int)(value as NSNumber), Is.EqualTo(0), "DoNotBackupMe-0");
url.SetResource(NSUrl.IsExcludedFromBackupKey, (NSNumber)1);
Assert.True(url.TryGetResource(NSUrl.IsExcludedFromBackupKey, out value));
Assert.That((int)(value as NSNumber), Is.EqualTo(1), "DoNotBackupMe-1");
NSError error;
NSDictionary dict = url.GetResourceValues(new NSString [] { NSUrl.IsExcludedFromBackupKey }, out error);
Assert.Null(error, "error");
Assert.That(dict.Keys [0], Is.EqualTo(NSUrl.IsExcludedFromBackupKey), "Key");
Assert.That((int)(dict.Values [0] as NSNumber), Is.EqualTo(1), "Value");
}
}
finally {
// otherwise the attribute won't reset even if the file is overwritten
File.Delete(filename);
}
}
public static Tuple <string, string, string> GetAvUtiConformance(this NSUrl filePath)
{
NSError error;
NSObject typeValue;
if (filePath.TryGetResource(NSUrl.TypeIdentifierKey, out typeValue, out error))
{
var typeValueString = typeValue as NSString;
if (typeValueString != null)
{
if (UTType.ConformsTo(typeValueString, UTType.Movie))
{
if (UTType.ConformsTo(typeValueString, UTType.MPEG4))
{
return(new Tuple <string, string, string> (UTType.Movie, UTType.MPEG4, filePath.LastPathComponent));
}
if (UTType.ConformsTo(typeValueString, UTType.QuickTimeMovie))
{
return(new Tuple <string, string, string> (UTType.Movie, UTType.QuickTimeMovie, filePath.LastPathComponent));
}
// alert that file is recognized as a movie, but we don't handle it (yet) log it
return(new Tuple <string, string, string> (UTType.Movie, UTType.Movie, filePath.LastPathComponent));
}
if (UTType.ConformsTo(typeValueString, UTType.Audio))
{
if (UTType.ConformsTo(typeValueString, UTType.MP3))
{
return(new Tuple <string, string, string> (UTType.Audio, UTType.MP3, filePath.LastPathComponent));
}
if (UTType.ConformsTo(typeValueString, UTType.WaveformAudio))
{
return(new Tuple <string, string, string> (UTType.Audio, UTType.WaveformAudio, filePath.LastPathComponent));
}
// alert that file is recognized as a audio, but we don't handle it (yet) log it
return(new Tuple <string, string, string> (UTType.Audio, UTType.Audio, filePath.LastPathComponent));
}
}
}
else if (error != null)
{
//Log.Debug ($"Error trying to get resource identifier\n\t{error.Code}\n\t{error.Domain}\n\t{error.Description}");
return(new Tuple <string, string, string> (UTType.PlainText, $"Error trying to get resource identifier\n\t{error.Code}\n\t{error.Domain}\n\t{error.Description}", filePath.LastPathComponent));
}
return(new Tuple <string, string, string> (UTType.PlainText, $"Unsupported file type or path", filePath.LastPathComponent));
}
public static bool IsDir(this NSUrl url)
{
NSError error;
NSObject isDirNum;
if (url.TryGetResource(NSUrl.IsDirectoryKey, out isDirNum, out error))
{
bool isDir = ((NSNumber)isDirNum).BoolValue;
return(isDir);
}
throw new NSErrorException(error);
}