public static getFirstElementByTagNameNS ( System.Xml.Linq.XElement parentElement, String Namespace, String tagName ) : System.Xml.Linq.XElement | ||
parentElement | System.Xml.Linq.XElement | |
Namespace | String | |
tagName | String | |
return | System.Xml.Linq.XElement |
/// <summary> /// Reads the document's spine, containing all sections in reading order. /// </summary> /// <param>book</param> /// <param>resourcesById</param> /// <param name="packageDocument"></param> /// <param name="epubReader"></param> /// <param name="resources"></param> /// <param name="idMapping"></param> private static Spine readSpine(XElement packageDocument, EpubReader epubReader, Resources resources, Dictionary<String, String> idMapping) { XElement spineElement = DOMUtil.getFirstElementByTagNameNS(packageDocument, NAMESPACE_OPF, OPFTags.spine); if (spineElement == null) { //log.error("Element " + OPFTags.spine + " not found in package document, generating one automatically"); return generateSpineFromResources(resources); } Spine result = new Spine(); result.setTocResource(findTableOfContentsResource(spineElement, resources)); var spineNodes = packageDocument.Elements(NAMESPACE_OPF + OPFTags.itemref).Elements<XElement>(); IEnumerator spineNode = spineNodes.GetEnumerator(); List<SpineReference> spineReferences = new List<SpineReference>(); while (spineNode.MoveNext()) { XElement spineItem = (XElement)spineNode.Current; String itemref = DOMUtil.getAttribute(spineItem, OPFAttributes.idref); if (StringUtil.isBlank(itemref)) { //log.error("itemref with missing or empty idref"); // XXX continue; } String id = idMapping[itemref]; if (id == null) { id = itemref; } Resource resource = resources.getByIdOrHref(id); if (resource == null) { //log.error("resource with id \'" + id + "\' not found"); continue; } SpineReference spineReference = new SpineReference(resource); if (OPFValues.no.Equals(DOMUtil.getAttribute(spineItem, OPFAttributes.linear))) { spineReference.setLinear(false); } spineReferences.Add(spineReference); } result.setSpineReferences(spineReferences); return result; }
/// <summary> /// Reads the manifest containing the resource ids, hrefs and mediatypes. /// </summary> /// <param>book</param> /// <param>resourcesByHref</param> /// <param>a Map with resources, with their id's as key.</param> /// <param name="packageDocument"></param> /// <param name="packageHref"></param> /// <param name="epubReader"></param> /// <param name="resources"></param> /// <param name="idMapping"></param> private static Resources readManifest(XElement packageDocument, String packageHref, EpubReader epubReader, Resources resources, Dictionary<String, String> idMapping) { XElement manifestElement = DOMUtil.getFirstElementByTagNameNS(packageDocument, NAMESPACE_OPF, OPFTags.manifest); Resources result = new Resources(); if (manifestElement == null) { return result; } var itemElements = packageDocument.Elements(NAMESPACE_OPF + OPFTags.item).Elements<XElement>(); foreach (XElement itemElement in (from e in itemElements where e.Value.Trim() != string.Empty select e)) { String id = DOMUtil.getAttribute(itemElement, OPFAttributes.id); String href = DOMUtil.getAttribute(itemElement, OPFAttributes.href); try { href = System.Web.HttpUtility.UrlDecode(href, System.Text.Encoding.GetEncoding(Constants.ENCODING)); } catch (Exception e) { //log.error(e.getMessage()); } String mediaTypeName = DOMUtil.getAttribute(itemElement, OPFAttributes.media_type); Resource resource = resources.remove(href); if (resource == null) { //log.error("resource with href '" + href + "' not found"); continue; } resource.setId(id); MediaType mediaType = MediatypeService.getMediaTypeByName(mediaTypeName); if (mediaType != null) { resource.setMediaType(mediaType); } result.add(resource); idMapping.Add(id, resource.getId()); } return result; }
/// <summary> /// Reads the book's guide. Here some more attempts are made at finding the cover /// page. /// </summary> /// <param name="packageDocument"></param> /// <param name="epubReader"></param> /// <param name="book"></param> /// <param name="resources">resources</param> private static void readGuide(XElement packageDocument, EpubReader epubReader, Book book, Resources resources) { XElement guideElement = DOMUtil.getFirstElementByTagNameNS(packageDocument, NAMESPACE_OPF, OPFTags.guide); if (guideElement == null) { return; } Guide guide = book.getGuide(); var guideReferences = packageDocument.Elements(NAMESPACE_OPF + OPFTags.reference).Elements<XElement>(); foreach (XElement referenceElement in (from e in guideReferences where e.Value.Trim() != string.Empty select e)) { String resourceHref = DOMUtil.getAttribute(referenceElement, OPFAttributes.href); if (StringUtil.isBlank(resourceHref)) { continue; } Resource resource = resources.getByHref(StringUtil.substringBefore(resourceHref, Constants.FRAGMENT_SEPARATOR_CHAR)); if (resource == null) { //log.error("Guide is referencing resource with href " + resourceHref + " which could not be found"); continue; } String type = DOMUtil.getAttribute(referenceElement, OPFAttributes.type); if (StringUtil.isBlank(type)) { //log.error("Guide is referencing resource with href " + resourceHref + " which is missing the 'type' attribute"); continue; } String title = DOMUtil.getAttribute(referenceElement, OPFAttributes.title); if (GuideReference.COVER.Equals(type)) { continue; // cover is handled elsewhere } GuideReference reference = new GuideReference(resource, type, title, StringUtil.substringAfter(resourceHref, Constants.FRAGMENT_SEPARATOR_CHAR)); guide.addReference(reference); } }