protected override Task <Stream> GetStreamAsync() { #if NETFX_CORE return(m_filename.OpenStreamForReadAsync()); #else return(Task.FromResult <Stream>(System.IO.File.OpenRead(m_filename))); #endif }
protected override Task <Stream> GetStreamAsync() { #if NETFX_CORE if (m_storageFile != null) { return(m_storageFile.OpenStreamForReadAsync()); } #endif #if WINDOWS_STORE return(Windows.Storage.StorageFile.GetFileFromPathAsync(m_filename).AsTask().ContinueWith(f => { return f.Result.OpenStreamForReadAsync(); }).ContinueWith(t => { return t.Result.Result; })); #else return(Task.FromResult <Stream>(System.IO.File.OpenRead(m_filename))); #endif }
public static async Task <(IBook Book, bool IsEpub)> GetBookFromFile(Windows.Storage.IStorageFile file) { if (file == null) { return(null, false); } else if (Path.GetExtension(file.Path).ToLower() == ".pdf") { goto Pdf; } else if (new string[] { ".zip", ".cbz" }.Contains(Path.GetExtension(file.Path).ToLower())) { goto Zip; } else if (new string[] { ".rar", ".cbr", ".7z", ".cb7" }.Contains(Path.GetExtension(file.Path).ToLower())) { goto SharpCompress; } else if (Path.GetExtension(file.Path).ToLower() == ".epub") { goto Epub; } var stream = await file.OpenStreamForReadAsync(); var buffer = new byte[64]; stream.Read(buffer, 0, stream.Length < 64 ? (int)stream.Length : 64); stream.Close(); if (buffer.Take(5).SequenceEqual(new byte[] { 0x25, 0x50, 0x44, 0x46, 0x2d })) { //pdf goto Pdf; } else if (buffer.Take(6).SequenceEqual(new byte[] { 0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C })) { //7zip goto SharpCompress; } else if (buffer.Take(4).SequenceEqual(new byte[] { 0x50, 0x4B, 0x03, 0x04 }) || buffer.Take(4).SequenceEqual(new byte[] { 0x50, 0x4B, 0x05, 0x06 }) || buffer.Take(4).SequenceEqual(new byte[] { 0x50, 0x4B, 0x07, 0x08 }) ) { //zip if (buffer.Skip(0x1e).Take(28).SequenceEqual(Encoding.ASCII.GetBytes("mimetypeapplication/epub+zip"))) { //epub goto Epub; } goto Zip; } else if (buffer.Take(7).SequenceEqual(new byte[] { 0x52, 0x61, 0x72, 0x21, 0x1a, 0x07, 0x00 })) { //rar goto SharpCompress; } else if (buffer.Take(8).SequenceEqual(new byte[] { 0x52, 0x61, 0x72, 0x21, 0x1a, 0x07, 0x01, 0x00 })) { //rar5 goto SharpCompress; } return(null, false); Pdf :; { var book = new PdfBook(); try { await book.Load(file, async (a) => { var dialog = new Views.PasswordRequestContentDialog(); var result = await dialog.ShowAsync(); if (result == Windows.UI.Xaml.Controls.ContentDialogResult.Primary) { return(dialog.Password, dialog.Remember); } else { throw new Exception(); } }); } catch { return(null, false); } if (book.PageCount <= 0) { return(null, false); } return(book, false); } Zip :; { var book = new CbzBook(); try { await book.LoadAsync((await file.OpenReadAsync()).AsStream()); } catch { return(null, false); } if (book.PageCount <= 0) { return(null, false); } return(book, false); } SharpCompress :; { var book = new CompressedBook(); try { await book.LoadAsync((await file.OpenReadAsync()).AsStream()); } catch { return(null, false); } if (book.PageCount <= 0) { return(null, false); } return(book, false); } Epub :; { return(null, true); } }