public static CueFile CreateFromStream(IRandomAccessStream stream, bool autodetectEncoding)
{
if (stream.Size > MaxCueFileSize)
{
// Return empty list when file size exceeds the limit.
return(new CueFile("", new List <ManagedAudioIndexCue>()));
}
if (!autodetectEncoding)
{
using (var mstream = stream.AsStreamForRead())
using (var sr = new StreamReader(mstream))
return(CreateFromString(sr.ReadToEnd()));
}
else
{
using (var mstream = stream.AsStreamForRead())
{
int length = (int)mstream.Length;
byte[] bytes = new byte[length];
mstream.Read(bytes, 0, length);
var charset = Text.Chardet.DetectCodepage(bytes);
var encoding = Encoding.GetEncoding(charset);
if (encoding == null)
{
encoding = Encoding.UTF8;
}
return(CreateFromString(encoding.GetString(bytes)));
}
}
}
public static async Task <IBuffer> StreamToBuffer(IRandomAccessStream stream)
{
var s = stream.AsStreamForRead();
if (stream != null)
{
s = stream.AsStreamForRead();
int len = (int)s.Length;
byte[] b = new byte[(uint)s.Length];
await s.ReadAsync(b, 0, len);
IBuffer buffer = WindowsRuntimeBufferExtensions.AsBuffer(b, 0, len);
return(buffer);
}
return(null);
}
public static async Task CreateAndWriteToFileAsync(IRandomAccessStream contentStream, string path)
{
CreateParentDirectories(path);
await using var stream = File.Open(path, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
contentStream.Seek(0);
await contentStream.AsStreamForRead().CopyToAsync(stream);
}
/// <summary>
/// ZIPデータを読み込みファイル一覧を作成する
/// </summary>
/// <returns></returns>
public async Task LoadDataAsync()
{
this.Dispose();
this.m_dataList.Clear();
StorageFile zipFile = await StorageFile.GetFileFromPathAsync(m_imageParam.Path);
StorageHistoryManager.AddStorage(zipFile, StorageHistoryManager.DataType.Latest);
this.ParentStorage = zipFile;
IRandomAccessStream randomStream = await zipFile.OpenReadAsync();
Stream stream = randomStream.AsStreamForRead();
m_zipArchive = new ZipArchive(stream);
foreach (ZipArchiveEntry entry in m_zipArchive.Entries)
{
if (FileKind.IsImageFile(entry.FullName))
{
m_dataList.Add(entry);
}
}
sortList(m_dataList);
//名前の順に並び替え
foreach (ZipArchiveEntry entry in m_dataList)
{
Debug.WriteLine(entry.Name);
}
}
public async Task <Stream> Encode()
{
try
{
Stopwatch stopwatchEncode = new Stopwatch();
stopwatchEncode.Start();
IRandomAccessStream imageStream = (IRandomAccessStream) new InMemoryRandomAccessStream();
BitmapEncoder bitmapEncoder = await GraffitiEncoder.BuildEncoder(imageStream);
BitmapPixelFormat pixelFormat;
byte[] imageBinaryData1 = GraffitiEncoder.GetImageBinaryData1(this._bitmap, out pixelFormat);
int num1 = (int)pixelFormat;
int num2 = 0;
int pixelWidth = this._bitmap.PixelWidth;
int pixelHeight = this._bitmap.PixelHeight;
double dpiX = 72.0;
double dpiY = 72.0;
byte[] pixels = imageBinaryData1;
bitmapEncoder.SetPixelData((BitmapPixelFormat)num1, (BitmapAlphaMode)num2, (uint)pixelWidth, (uint)pixelHeight, dpiX, dpiY, pixels);
await bitmapEncoder.FlushAsync().AsTask().ConfigureAwait(false);
long num3 = (long)imageStream.Size;
stopwatchEncode.Stop();
Execute.ExecuteOnUIThread((Action)(() => {}));
return(imageStream.AsStreamForRead());
}
catch
{
return((Stream)null);
}
}
public static async Task <List <Kategoria> > Import(StorageFile _fajl)
{
XLWorkbook wb = null;
using (IRandomAccessStream s = await _fajl.OpenReadAsync())
wb = new XLWorkbook(s.AsStreamForRead());
IXLWorksheet ws = wb.Worksheet("Categories");
List <Kategoria> kategoriak = new List <Kategoria>();
foreach (var sor in ws.RangeUsed().RowsUsed())
{
if (sor.RowNumber() == 1)
{
continue;
}
Kategoria kategoria = new Kategoria()
{
ID = sor.Cell(1).GetValue <int>(),
ParentID = sor.Cell(2).GetValue <int>(),
Megnevezes = sor.Cell(4).GetString()
};
kategoriak.Add(kategoria);
}
return(kategoriak);
}
public void UpdateImage(IRandomAccessStream rass)
{
storage["Picture"] = new ParseFile("Picture.jpg", rass.AsStreamForRead());
this.RaisePropertyChanged("Picture");
}
/// <summary>
/// Load a given filename asynchronously
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public async Task <T> LoadAsync(string fileName)
{
try
{
fileName = AppendExt(fileName);
StorageFile file = null;
file = await storageFolder.GetFileAsync(fileName);
IRandomAccessStream readStream = await file.OpenAsync(FileAccessMode.Read);
Stream inStream = Task.Run(() => readStream.AsStreamForRead()).Result;
return((T)xmlSerializer.Deserialize(inStream));
}
catch (FileNotFoundException)
{
//file not existing is perfectly valid so simply return the default
return(default(T));
//throw;
}
catch (Exception)
{
//Unable to load contents of file
throw;
}
}
public async Task ReadExcuseAsync()
{
try
{
using (IRandomAccessStream stream =
await excuseFile.OpenAsync(FileAccessMode.Read))
using (Stream inputStream = stream.AsStreamForRead())
{
DataContractSerializer serializer
= new DataContractSerializer(typeof(Excuse));
CurrentExcuse = serializer.ReadObject(inputStream) as Excuse;
}
await new MessageDialog("Excuse read from to "
+ excuseFile.Name).ShowAsync();
await UpdateFileDateAsync();
}
catch (SerializationException)
{
new MessageDialog("Unable to read " + excuseFile.Name).ShowAsync();
NewExcuseAsync();
}
finally
{
OnPropertyChanged("CurrentExcuse");
}
}
/// <summary>
/// Chargement du contenu du fichier XML contenant
/// les scores des joueurs dans une collection de joueurs
/// </summary>
public async void charger()
{
var localFolder = ApplicationData.Current.LocalFolder;
XDocument doc = new XDocument();
try
{
StorageFile textFile = await localFolder.GetFileAsync("scores.xml");
using (IRandomAccessStream textStream = await textFile.OpenReadAsync())
{
Stream s = textStream.AsStreamForRead();
doc = XDocument.Load(s);
int nbJoueurs = doc.Root.Elements().Count();
var joueurs = doc.Descendants("Joueur");
foreach (var joueur in joueurs)
{
string pseudo = joueur.Element("pseudo").Value;
int score = int.Parse(joueur.Element("score").Value);
Joueur leJoueur = new Joueur();
leJoueur.pseudo = pseudo;
leJoueur.score = score;
tabScores.Add(leJoueur);
}
tabScores.Sort();
}
}
catch { }
}
public static async Task <T> readObjektAsync <T>(string datei)
{
StorageFile file;
IRandomAccessStream inStream = null;
try
{
file = await ApplicationData.Current.LocalFolder.GetFileAsync(datei);
inStream = await file.OpenAsync(FileAccessMode.Read);
DataContractSerializer serializer = new DataContractSerializer(typeof(T));
var data = (T)serializer.ReadObject(inStream.AsStreamForRead());
inStream.Dispose();
return(data);
}
catch (Exception)
{
if (inStream != null)
{
inStream.Dispose();
}
return(default(T));
}
}
/// <summary>
/// Load object from file
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public async Task <T> LoadAsync(string fileName)
{
fileName = fileName + FileExtension;
StorageFolder folder = await GetFolderAsync().ConfigureAwait(false);
if (await folder.ContainsFileAsync(fileName).ConfigureAwait(false))
{
StorageFile file = await folder.GetFileAsync(fileName);
string data;
IRandomAccessStream accessStream = await file.OpenReadAsync();
if (accessStream.Size == 0)
{
return(default(T));
}
using (Stream stream = accessStream.AsStreamForRead((int)accessStream.Size))
{
var content = new byte[stream.Length];
await stream.ReadAsync(content, 0, (int)stream.Length).ConfigureAwait(false);
data = Encoding.UTF8.GetString(content, 0, content.Length);
}
//Deserialize to object
var result = JsonConvert.DeserializeObject <T>(data);
return(result);
}
return(default(T));
}
public async Task LoadKHRSpecGlossGLTFFromStreamUWP()
{
StorageFolder localFolder = ApplicationData.Current.LocalFolder;
StorageFile sampleFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri(GLTF_PBR_SPECGLOSS_PATH));
IRandomAccessStream gltfStream = await sampleFile.OpenAsync(FileAccessMode.Read);
var reader = new DataReader(gltfStream.GetInputStreamAt(0));
await reader.LoadAsync((uint)gltfStream.Size);
GLTFRoot gltfRoot = GLTFParser.ParseJson(gltfStream.AsStreamForRead());
Assert.IsNotNull(gltfRoot.ExtensionsUsed);
Assert.IsTrue(gltfRoot.ExtensionsUsed.Contains(KHR_materials_pbrSpecularGlossinessExtensionFactory.EXTENSION_NAME));
Assert.IsNotNull(gltfRoot.Materials);
Assert.AreEqual(1, gltfRoot.Materials.Count);
Material materialDef = gltfRoot.Materials[0];
KHR_materials_pbrSpecularGlossinessExtension specGloss = materialDef.Extensions[KHR_materials_pbrSpecularGlossinessExtensionFactory.EXTENSION_NAME] as KHR_materials_pbrSpecularGlossinessExtension;
Assert.IsTrue(specGloss != null);
Assert.AreEqual(Color.White, specGloss.DiffuseFactor);
Assert.AreEqual(4, specGloss.DiffuseTexture.Index.Id);
Assert.AreEqual(KHR_materials_pbrSpecularGlossinessExtension.SPEC_FACTOR_DEFAULT, specGloss.SpecularFactor);
Assert.AreEqual(KHR_materials_pbrSpecularGlossinessExtension.GLOSS_FACTOR_DEFAULT, specGloss.GlossinessFactor);
Assert.AreEqual(5, specGloss.SpecularGlossinessTexture.Index.Id);
}
private async Task <SavedData> retrieveSavedData()
{
SavedData savedData = new SavedData();
XmlSerializer xmlSerializer = new XmlSerializer(typeof(SavedData));
try
{
StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync(savedDataFileName);
using (IRandomAccessStream writeStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
if (writeStream.Size != 0)
{
using (XmlReader xmlReader = XmlReader.Create(writeStream.AsStreamForRead()))
{
savedData = xmlSerializer.Deserialize(xmlReader) as SavedData;
if (savedData == null)
{
savedData = new SavedData();
}
}
}
}
}
catch (FileNotFoundException)
{
// EAT: The save game file doesn't exist, so a new one will be made later
}
return(savedData);
}
/// <summary>
/// 读取本地文件夹根目录的文件
/// </summary>
/// <param name="fileName">文件名</param>
/// <returns>读取文件的内容</returns>
public static async Task <string> ReadFileAsync(string fileName)
{
string text;
try
{
// 获取存储数据的文件夹
IStorageFolder applicationFolder = await GetDataFolder();
// 根据文件名获取文件夹里面的文件
IStorageFile storageFile = await applicationFolder.GetFileAsync(fileName);
// 打开文件获取文件的数据流
IRandomAccessStream accessStream = await storageFile.OpenReadAsync();
// 使用StreamReader读取文件的内容，需要将IRandomAccessStream对象转化为Stream对象来初始化StreamReader对象
using (StreamReader streamReader = new StreamReader(accessStream.AsStreamForRead((int)accessStream.Size)))
{
text = streamReader.ReadToEnd();
}
}
catch (Exception e)
{
text = "文件读取错误：" + e.Message;
}
return(text);
}
public async Task<IRandomAccessStream> GetThumbnailImage(IRandomAccessStream stream, int width, int height, bool smartCropping = true)
{
var response = await _client.GetThumbnailAsync(stream.AsStreamForRead(), width, height, smartCropping);
var responseStream = new MemoryStream(response);
return responseStream.AsRandomAccessStream();
}
public static async Task<ImgurEntity> UploadImgur(IRandomAccessStream fileStream)
{
try
{
var imageData = new byte[fileStream.Size];
for (int i = 0; i < imageData.Length; i++)
{
imageData[i] = (byte)fileStream.AsStreamForRead().ReadByte();
}
var theAuthClient = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Post, "https://api.imgur.com/3/image");
request.Headers.Authorization = new AuthenticationHeaderValue("Client-ID", "e5c018ac1f4c157");
var form = new MultipartFormDataContent();
var t = new StreamContent(fileStream.AsStream());
// TODO: See if this is the correct way to use imgur's v3 api. I can't see why we would still need to convert images to base64.
string base64Img = Convert.ToBase64String(imageData);
t.Headers.ContentType = new MediaTypeHeaderValue("image/jpeg");
form.Add(new StringContent(base64Img), @"image");
form.Add(new StringContent("file"), "type");
request.Content = form;
HttpResponseMessage response = await theAuthClient.SendAsync(request);
string responseString = await response.Content.ReadAsStringAsync();
if (responseString == null) return null;
var imgurEntity = JsonConvert.DeserializeObject<ImgurEntity>(responseString);
return imgurEntity;
}
catch (WebException)
{
}
catch (IOException)
{
return null;
}
return null;
}
public async Task <string> CreateMusicAlbumCoverFile(string name, IRandomAccessStream stream)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentException($"“{nameof(name)}”不能为 null 或空。", nameof(name));
}
if (stream is null)
{
throw new ArgumentNullException(nameof(stream));
}
string fileName = name.Replace(":", string.Empty).Replace("/", string.Empty).Replace("\\", string.Empty).Replace("?", string.Empty).Replace("*", string.Empty).Replace("|", string.Empty).Replace("\"", string.Empty).Replace("<", string.Empty).Replace(">", string.Empty);
StorageFolder folder = ApplicationData.Current.TemporaryFolder;
if (await folder.FileExistsAsync($"{fileName}.png"))
{
return((await folder.GetFileAsync($"{fileName}.png")).Path);
}
StorageFile file = await folder.CreateFileAsync($"{fileName}.png", CreationCollisionOption.OpenIfExists);
Stream fileStream = (await file.OpenAsync(FileAccessMode.ReadWrite)).AsStreamForWrite();
Stream _stream = stream.AsStreamForRead();
_ = _stream.Seek(0, SeekOrigin.Begin);
await _stream.CopyToAsync(fileStream);
await fileStream.FlushAsync();
fileStream.Dispose();
return(file.Path);
}
public void TakePicture(int maxPixelDimension, int percentQuality, Action <Stream> pictureAvailable, Action assumeCancelled)
{
var dispatcher = this.GetService <IMvxViewDispatcherProvider>();
dispatcher.Dispatcher.RequestMainThreadAction(
async() =>
{
// Using Windows.Media.Capture.CameraCaptureUI API to capture a photo
var dialog = new CameraCaptureUI();
var aspectRatio = new Size(16, 9);
dialog.PhotoSettings.CroppedAspectRatio = aspectRatio;
// HACK HACK!
dialog.PhotoSettings.MaxResolution = CameraCaptureUIMaxPhotoResolution.SmallVga;
dialog.PhotoSettings.Format = CameraCaptureUIPhotoFormat.Jpeg;
var file = await dialog.CaptureFileAsync(CameraCaptureUIMode.Photo);
if (file != null)
{
BitmapImage bitmapImage = new BitmapImage();
var memoryStream = new MemoryStream();
using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read))
{
var conventional = fileStream.AsStreamForRead();
conventional.CopyTo(memoryStream);
}
pictureAvailable(memoryStream);
}
else
{
assumeCancelled();
}
});
}
/// <summary>
/// Retrieve a stored instance of T with a specified handle from Windows.Storage.ApplicationData.
/// Specification of a handle supports storage and deletion of different instances of T.
/// </summary>
/// <param name="Handle">User-defined handle for the stored object</param>
public async Task <T> LoadAsync(string Handle)
{
if (Handle == null)
{
throw new ArgumentNullException("Handle");
}
string fileName = FileName(Activator.CreateInstance <T>(), Handle);
try
{
StorageFile file = null;
StorageFolder folder = GetFolder(storageType);
file = await folder.GetFileAsync(fileName);
IRandomAccessStream readStream = await file.OpenAsync(FileAccessMode.Read);
using (Stream inStream = Task.Run(() => readStream.AsStreamForRead()).Result)
{
return((T)serializer.Deserialize(inStream));
}
}
catch (FileNotFoundException)
{
//file not existing is perfectly valid so simply return the default
return(default(T));
//Interesting thread here: How to detect if a file exists (http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/1eb71a80-c59c-4146-aeb6-fefd69f4b4bb)
//throw;
}
catch (Exception)
{
//Unable to load contents of file
throw;
}
}
//</SnippetVertices>
/// <summary>
/// Fixes issue in API where textures are not saved correctly
/// </summary>
/// <param name="modelStream">3dmodel.model data</param>
/// <returns></returns>
private async Task <IRandomAccessStream> FixTextureContentType(IRandomAccessStream modelStream)
{
XDocument xmldoc = XDocument.Load(modelStream.AsStreamForRead());
var outputStream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
var writer = new Windows.Storage.Streams.DataWriter(outputStream);
writer.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
writer.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
writer.WriteString("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
var text = xmldoc.ToString();
// ensure that content type is set correctly
// texture content can be either png or jpg
var replacedText = text.Replace("contenttype=\"\"", "contenttype=\"image/png\"");
writer.WriteString(replacedText);
await writer.StoreAsync();
await writer.FlushAsync();
writer.DetachStream();
return(outputStream);
}
public WindowsUniversalFileStream(string fileName, StorageFolder directory, FileAccessMode mode, CreationCollisionOption collisionOptions, StorageOpenOptions openOptions, int length = 1024 * 80, int writeBufferSize = 1024 * 80, int readBufferSize = 1024 * 80)
{
if (fileName == null || fileName == string.Empty)
{
throw new ArgumentNullException("path");
}
Directory = directory;
FileName = fileName;
Mode = mode;
CollisionOptions = collisionOptions;
OpenOptions = openOptions;
WriteBufferSize = writeBufferSize;
ReadBufferSize = readBufferSize;
RandomAccessStream = Directory.CreateFileAsync(FileName, collisionOptions).AsTask().Result.OpenAsync(mode, openOptions).AsTask().Result;
ReadStream = RandomAccessStream.AsStreamForRead(ReadBufferSize);
ReadStream.SetLength(length);
if (mode == FileAccessMode.ReadWrite)
{
WriteStream = RandomAccessStream.AsStreamForWrite(WriteBufferSize);
}
}
/// <summary>
/// アーカイブファイルからサムネイル用画像データを取得する
/// </summary>
/// <param name="path"></param>
/// <param name="thumWidth"></param>
/// <returns></returns>
public static async Task <BitmapImage> GetFirstImageFromArchive(string path, int thumWidth)
{
BitmapImage bitmap = null;
StorageFile zipFile = await StorageFile.GetFileFromPathAsync(path);
using (IRandomAccessStream randomStream = await zipFile.OpenReadAsync())
{
using (Stream stream = randomStream.AsStreamForRead())
{
using (ZipArchive zipArchive = new ZipArchive(stream))
{
foreach (ZipArchiveEntry entry in zipArchive.Entries)
{
if (FileKind.IsImageFile(entry.FullName))
{
bitmap = await BitmapUtils.CreateBitmap(entry, thumWidth);
break;
}
}
}
}
}
return(bitmap);
}
private async void OnCapturePhotoCompleted(IRandomAccessStream stream, IAsyncAction result, AsyncStatus status)
{
try
{
Stream streamCopy = stream.AsStreamForRead();
streamCopy.Position = 0;
Face[] faces = await _faceClient.DetectAsync(streamCopy);
stream.Dispose();
stream = null;
bool userDetected = false;
foreach (var face in faces)
{
VerifyResult verifyResult = await _faceClient.VerifyAsync(face.FaceId, _groupId, _personId);
if (userDetected = verifyResult.IsIdentical)
{
break;
}
}
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
if (userDetected && !_loggedOn)
{
txtGreeting.Text = "Hello!";
animGreeting.Begin();
_loggedOn = true;
imgLogoff.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
imgLogon.Visibility = Windows.UI.Xaml.Visibility.Visible;
itmsCalendarEvents.Visibility = Windows.UI.Xaml.Visibility.Visible;
}
else if (!userDetected && _loggedOn)
{
txtGreeting.Text = "Goodbye!";
animGreeting.Begin();
_loggedOn = false;
imgLogoff.Visibility = Windows.UI.Xaml.Visibility.Visible;
imgLogon.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
itmsCalendarEvents.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
}
});
}
catch (FaceAPIException e)
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
txtException.Text = e.ErrorMessage;
animException.Begin();
});
}
catch (Exception)
{
if (stream != null)
{
stream.Dispose();
stream = null;
}
}
}
public static async Task <string> Sha1Async(this IRandomAccessStream randomAccessStream)
{
using var sha1 = SHA1.Create();
var result = await sha1.ComputeHashAsync(randomAccessStream.AsStreamForRead());
randomAccessStream.Seek(0); // reset the stream
return(result.Select(b => b.ToString("x2")).Aggregate((acc, str) => acc + str));
}
public async Task <IRandomAccessStream> GetThumbnailImage(IRandomAccessStream stream, int width, int height, bool smartCropping = true)
{
var response = await _client.GetThumbnailAsync(stream.AsStreamForRead(), width, height, smartCropping);
var responseStream = new MemoryStream(response);
return(responseStream.AsRandomAccessStream());
}
/// <summary>
/// Analyzes a bitmap image into a color palette.
/// </summary>
/// <param name="image">Bitmap Image.</param>
/// <param name="width">Width of the image.</param>
/// <param name="height">Hight of the image.</param>
public async void Analyse(BitmapImage image, int width = 96, int height = 66)
{
RandomAccessStreamReference random = RandomAccessStreamReference.CreateFromUri(image.UriSource);
IRandomAccessStream str = await random.OpenReadAsync();
Analyse(str.AsStreamForRead(), width, height);
str.Dispose();
}
/// <inheritdoc/>
public async Task <IOneDriveStorageFile> UploadFileAsync(string desiredName, IRandomAccessStream content, CreationCollisionOption options = CreationCollisionOption.FailIfExists, int maxChunkSize = -1)
{
int currentChunkSize = maxChunkSize < 0 ? OneDriveUploadConstants.DefaultMaxChunkSizeForUploadSession : maxChunkSize;
if (currentChunkSize % OneDriveUploadConstants.RequiredChunkSizeIncrementForUploadSession != 0)
{
throw new ArgumentException("Max chunk size must be a multiple of 320 KiB", nameof(maxChunkSize));
}
if (string.IsNullOrEmpty(desiredName))
{
throw new ArgumentNullException(nameof(desiredName));
}
if (content == null)
{
throw new ArgumentNullException(nameof(content));
}
var uploadSessionUri = $"{Provider.BaseUrl}/drive/items/{OneDriveItem.Id}:/{desiredName}:/oneDrive.createSession";
var conflictBehavior = new OneDriveItemConflictBehavior {
Item = new OneDriveConflictItem {
ConflictBehavior = OneDriveHelper.TransformCollisionOptionToConflictBehavior(options.ToString())
}
};
var jsonConflictBehavior = JsonConvert.SerializeObject(conflictBehavior);
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, uploadSessionUri)
{
Content = new StringContent(jsonConflictBehavior, Encoding.UTF8, "application/json")
};
await Provider.AuthenticationProvider.AuthenticateRequestAsync(request).ConfigureAwait(false);
var response = await Provider.HttpProvider.SendAsync(request).ConfigureAwait(false);
if (!response.IsSuccessStatusCode)
{
throw new ServiceException(new Error {
Message = "Could not create an UploadSession", Code = "NoUploadSession", ThrowSite = "UWP Community Toolkit"
});
}
IsUploadCompleted = false;
var jsonData = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
_uploadSession = JsonConvert.DeserializeObject <Microsoft.OneDrive.Sdk.UploadSession>(jsonData);
var streamToUpload = content.AsStreamForRead();
_uploadProvider = new Microsoft.OneDrive.Sdk.Helpers.ChunkedUploadProvider(_uploadSession, Provider, streamToUpload, maxChunkSize);
var uploadedItem = await _uploadProvider.UploadAsync().ConfigureAwait(false);
IsUploadCompleted = true;
return(InitializeOneDriveStorageFile(uploadedItem.CopyToDriveItem()));
}
/// <summary>
/// Constructs a Logo from a WinRT Stream.
/// </summary>
/// <param name="imageStream">A stream containing a valid image</param>
public LogoSource(IRandomAccessStream imageStream)
{
if (imageStream == null)
{
throw new ArgumentNullException("imageStream");
}
_stream = imageStream.AsStreamForRead();
_ownsStream = true;
}
public virtual async void Consume(IRandomAccessStream stream)
{
using (stream)
{
using var gifStream = await IOHelper.GetGifStreamFromZipStreamAsync(stream.AsStreamForRead(), _metadata);
await IOHelper.CreateAndWriteToFileAsync(gifStream, Destination);
}
}
public async Task <bool> UploadFileAsync(StorageFile localFile, CancellationToken cancellationToken)
{
if (!await IsAuthenticatedAsync().ConfigureAwait(false))
{
return(false);
}
try
{
bool uploadSucceeded = await CoreHelper.RetryAsync(async() =>
{
using (await _semaphore.WaitAsync(cancellationToken).ConfigureAwait(false))
using (IRandomAccessStream localFileContent = await localFile.OpenReadAsync())
using (Stream localFileContentStream = localFileContent.AsStreamForRead())
{
FileMetadata uploadResult = null;
long localFileSize = localFileContentStream.Length;
int chunksCount = (int)Math.Ceiling((double)localFileSize / TransferBufferSize);
if (chunksCount <= 1)
{
// File is too small for uploading by chunks. Let's upload in 1 shot.
uploadResult = await _dropboxClient.Files.UploadAsync(
new CommitInfo(
path: "/" + localFile.Name,
mode: WriteMode.Overwrite.Instance),
localFileContentStream)
.ConfigureAwait(false);
}
else
{
// For files > 150 MB, UploadAsync won't work, so we use an upload session in case.
// It is unlikely that a user data file will be 150 MB but we never know.
// In fact, here we use upload session for any file bigger than the TransferBufferSize.
uploadResult = await UploadFileInChunksAsync(
chunksCount,
localFileContentStream,
localFile.Name)
.ConfigureAwait(false);
}
return(uploadResult != null && uploadResult.Size == (ulong)localFileSize);
}
}).ConfigureAwait(false);
_logger.LogEvent(UploadFileEvent, $"Upload succeeded == {uploadSucceeded}");
return(uploadSucceeded);
}
catch (Exception ex)
{
_logger.LogFault(UploadFileFaultEvent, "Unable to upload a file.", ex);
return(false);
}
}
public static byte[] ReadStreamToByteArray(this IRandomAccessStream oriStream)
{
var stream = oriStream.AsStreamForRead();
stream.Seek(0, SeekOrigin.Begin);
var data = new byte[stream.Length];
stream.Read(data, 0, (int)stream.Length);
return(data);
}
public static async Task <byte[]> ToByteArray(this IRandomAccessStream accessStream)
{
var stream = accessStream.AsStreamForRead();
byte[] array = new byte[stream.Length];
await stream.ReadAsync(array, 0, array.Length);
return(array);
}
public async Task<string> GetPrevalentEmotion(IRandomAccessStream imageStream)
{
var result = await _client.RecognizeAsync(imageStream.AsStreamForRead());
var emotionScores = typeof(Microsoft.ProjectOxford.Emotion.Contract.Scores).GetProperties()
.Where(p => p.PropertyType == typeof(float))
.Select(p => new { Name = p.Name, Score = (float)p.GetValue(result[0].Scores) });
return emotionScores.OrderByDescending(s => s.Score).Select(s => s.Name).FirstOrDefault();
}
/// <summary>
/// Pictures Libraryへファイルを保存する
/// 既存の同名ファイルが存在している場合はファイルを上書きする
/// </summary>
/// <param name="fileName"></param>
/// <param name="stream">エンコード済みの画像ストリーム</param>
/// <returns></returns>
public static async Task<StorageFile> SaveToPicturesLibraryAsync(string fileName, IRandomAccessStream stream)
{
var library = KnownFolders.PicturesLibrary;
var file = await library.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
using (var writeStrm = await file.OpenStreamForWriteAsync())
{
var readStrm = stream.AsStreamForRead();
readStrm.CopyTo(writeStrm);
}
return file;
}
public async override Task<bool> SaveAsync(string cacheKey, IRandomAccessStream cacheStream)
{
var fullFileName = Path.Combine(CacheDirectory, CacheFileNameGenerator.GenerateCacheName(cacheKey));
var cacheSizeInBytes = cacheStream.AsStreamForRead().Length;
while (CurrentCacheSizeInBytes + cacheSizeInBytes > _cacheLimitInBytes)
{
if (!await RemoveOldestCacheFile())
{
break; // All cache deleted
}
}
var wasFileSaved = await base.InternalSaveAsync(fullFileName, cacheStream);
if (wasFileSaved)
{
_lastAccessTimeDictionary[Path.Combine(CacheDirectory, fullFileName)] = DateTimeHelper.CurrentTimeMillis();
CurrentCacheSizeInBytes += cacheSizeInBytes; // Updating current cache size
}
return wasFileSaved;
}
public async Task<string> RecognizeTextAsync(IRandomAccessStream stream, string language = "unk", bool detectOrientation = true)
{
var response = await _client.RecognizeTextAsync(stream.AsStreamForRead(), language, detectOrientation);
return response.Regions.SelectMany(r => r.Lines).SelectMany(l => l.Words).Select(w => w.Text).StringJoin(" ");
}
private async Task<IRandomAccessStream> FixTextureContentType(IRandomAccessStream modelStream)
{
XDocument xmldoc = XDocument.Load(modelStream.AsStreamForRead());
var outputStream = new Windows.Storage.Streams.InMemoryRandomAccessStream();
var writer = new Windows.Storage.Streams.DataWriter(outputStream);
writer.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
writer.ByteOrder = Windows.Storage.Streams.ByteOrder.LittleEndian;
var text = xmldoc.ToString();
var replacedText = text.Replace("contenttype=\"\"", "contenttype=\"image/png\"");
writer.WriteString(replacedText);
await writer.StoreAsync();
await writer.FlushAsync();
writer.DetachStream();
return outputStream;
}
public LoadResult Load(IRandomAccessStream lineStream)
{
StartLoad(lineStream.AsStreamForRead());
return CreateResult();
}
