/// <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;
}
///
/// <param name="result"></param>
/// <param name="resources"></param>
private void handleMimeType(Book result, Resources resources)
{
resources.remove("mimetype");
}
///
/// <param name="packageResourceHref"></param>
/// <param name="book"></param>
/// <param name="resources"></param>
private Resource processPackageResource(String packageResourceHref, Book book, Resources resources)
{
Resource packageResource = resources.remove(packageResourceHref);
try
{
PackageDocumentReader.read(packageResource, this, book, resources);
}
catch (Exception e)
{
//log.error(e.getMessage(), e);
}
return packageResource;
}
///
/// <param name="resources"></param>
private String getPackageResourceHref(Resources resources)
{
String defaultResult = "OEBPS/content.opf";
String result = defaultResult;
Resource containerResource = resources.remove("META-INF/container.xml");
if (containerResource == null)
{
return result;
}
try
{
XElement xElement = XElement.Load(containerResource.getInputStream());
XNamespace ns = (xElement.Attribute("xmlns") != null) ? xElement.Attribute("xmlns").Value : XNamespace.None;
return xElement.Descendants(ns + "rootfile").FirstOrDefault((XElement p) => p.Attribute("media-type") != null && p.Attribute("media-type").Value.Equals("application/oebps-package+xml", System.StringComparison.InvariantCultureIgnoreCase)).Attribute("full-path").Value;
}
catch (Exception e)
{
//log.error(e.getMessage(), e);
}
if (StringUtil.isBlank(result))
{
result = defaultResult;
}
return result;
return "";
}