/// <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);
}
}
/// <summary>
/// Creates a spine out of all resources in the resources. The generated spine
/// consists of all XHTML pages in order of their href.
/// </summary>
/// <param name="resources"></param>
private static Spine generateSpineFromResources(Resources resources)
{
Spine result = new Spine();
List<String> resourceHrefs = new List<String>(resources.getAllHrefs());
foreach (String resourceHref in resourceHrefs)
{
Resource resource = resources.getByHref(resourceHref);
if (resource.getMediaType() == MediatypeService.NCX)
{
result.setTocResource(resource);
}
else if (resource.getMediaType() == MediatypeService.XHTML)
{
result.addSpineReference(new SpineReference(resource));
}
}
return result;
}