public static async Task <Epub3NavDocument> ReadEpub3NavDocumentAsync(ZipArchive epubArchive, string contentDirectoryPath, EpubPackage package) { Epub3NavDocument result = new Epub3NavDocument(); EpubManifestItem navManifestItem = package.Manifest.FirstOrDefault(item => item.Properties != null && item.Properties.Contains(ManifestProperty.NAV)); if (navManifestItem == null) { if (package.EpubVersion == EpubVersion.EPUB_2) { return(null); } else { throw new Exception("EPUB parsing error: NAV item not found in EPUB manifest."); } } string navFileEntryPath = ZipPathUtils.Combine(contentDirectoryPath, navManifestItem.Href); ZipArchiveEntry navFileEntry = epubArchive.GetEntry(navFileEntryPath); if (navFileEntry == null) { throw new Exception($"EPUB parsing error: navigation file {navFileEntryPath} not found in archive."); } if (navFileEntry.Length > Int32.MaxValue) { throw new Exception($"EPUB parsing error: navigation file {navFileEntryPath} is larger than 2 Gb."); } XDocument navDocument; using (Stream containerStream = navFileEntry.Open()) { navDocument = await XmlUtils.LoadDocumentAsync(containerStream).ConfigureAwait(false); } XNamespace xhtmlNamespace = navDocument.Root.Name.Namespace; XElement htmlNode = navDocument.Element(xhtmlNamespace + "html"); if (htmlNode == null) { throw new Exception("EPUB parsing error: navigation file does not contain html element."); } XElement bodyNode = htmlNode.Element(xhtmlNamespace + "body"); if (bodyNode == null) { throw new Exception("EPUB parsing error: navigation file does not contain body element."); } result.Navs = new List <Epub3Nav>(); string folder = ZipPathUtils.GetDirectoryPath(navManifestItem.Href); foreach (XElement navNode in bodyNode.Elements(xhtmlNamespace + "nav")) { Epub3Nav epub3Nav = ReadEpub3Nav(navNode); AdjustRelativePath(epub3Nav.Ol, folder); result.Navs.Add(epub3Nav); } return(result); }
public static async Task <EpubSchema> ReadSchemaAsync(ZipArchive epubArchive) { var result = new EpubSchema(); var rootFilePath = await RootFilePathReader.GetRootFilePathAsync(epubArchive).ConfigureAwait(false); var contentDirectoryPath = ZipPathUtils.GetDirectoryPath(rootFilePath); result.ContentDirectoryPath = contentDirectoryPath; EpubPackage package = await PackageReader.ReadPackageAsync(epubArchive, rootFilePath).ConfigureAwait(false); result.Package = package; return(result); }
public static async Task <EpubSchema> ReadSchemaAsync(ZipArchive epubArchive) { EpubSchema result = new EpubSchema(); string rootFilePath = await RootFilePathReader.GetRootFilePathAsync(epubArchive).ConfigureAwait(false); string contentDirectoryPath = ZipPathUtils.GetDirectoryPath(rootFilePath); result.ContentDirectoryPath = contentDirectoryPath; EpubPackage package = await PackageReader.ReadPackageAsync(epubArchive, rootFilePath).ConfigureAwait(false); result.Package = package; EpubNavigation navigation = await NavigationReader.ReadNavigationAsync(epubArchive, contentDirectoryPath, package).ConfigureAwait(false); result.Navigation = navigation; return(result); }
public static async Task <EpubSchema> ReadSchemaAsync(ZipArchive epubArchive) { EpubSchema result = new EpubSchema(); string rootFilePath = await RootFilePathReader.GetRootFilePathAsync(epubArchive).ConfigureAwait(false); string contentDirectoryPath = ZipPathUtils.GetDirectoryPath(rootFilePath); result.ContentDirectoryPath = contentDirectoryPath; EpubPackage package = await PackageReader.ReadPackageAsync(epubArchive, rootFilePath).ConfigureAwait(false); result.Package = package; result.Epub2Ncx = await Epub2NcxReader.ReadEpub2NcxAsync(epubArchive, contentDirectoryPath, package).ConfigureAwait(false); result.Epub3NavDocument = await Epub3NavDocumentReader.ReadEpub3NavDocumentAsync(epubArchive, contentDirectoryPath, package).ConfigureAwait(false); return(result); }