///
/// <param name="mediaType"></param>
/// <param name="counter"></param>
private string createHref(MediaType mediaType, int counter)
{
if (MediatypeService.isBitmapImage(mediaType))
{
return "image_" + counter + mediaType.getDefaultExtension();
}
else
{
return "item_" + counter + mediaType.getDefaultExtension();
}
}
///
/// <param name="resource"></param>
private string getResourceItemPrefix(Resource resource)
{
String result;
if (MediatypeService.isBitmapImage(resource.getMediaType()))
{
result = IMAGE_PREFIX;
}
else
{
result = ITEM_PREFIX;
}
return result;
}
/// <summary>
/// Finds the cover resource in the packageDocument and adds it to the book if
/// found. Keeps the cover resource in the resources map
/// </summary>
/// <param>resources</param>
/// <param name="packageDocument"></param>
/// <param name="book"></param>
private static void readCover(XElement packageDocument, Book book)
{
List<String> coverHrefs = findCoverHrefs(packageDocument);
foreach (String coverHref in coverHrefs)
{
Resource resource = book.getResources().getByHref(coverHref);
if (resource == null)
{
//log.error("Cover resource " + coverHref + " not found");
continue;
}
if (resource.getMediaType() == MediatypeService.XHTML)
{
book.setCoverPage(resource);
}
else if (MediatypeService.isBitmapImage(resource.getMediaType()))
{
book.setCoverImage(resource);
}
}
}
/// <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>
/// Creates a resource with the data from the given InputStream at the specified
/// href. The MediaType will be determined based on the href extension.
/// </summary>
/// <see>nl.siegmann.epublib.service.MediatypeService.determineMediaType(String)
/// Assumes that if the data is of a text type (html/css/etc) then the encoding
/// will be UTF-8 It is recommended to us the</see>
/// <see>nl.siegmann.epublib.domain.Resource.Resource(Reader, String) method for
/// creating textual (html/css/etc) resources to prevent encoding problems. Use
/// this method only for binary Resources like images, fonts, etc.</see>
/// <param name="in">The Resource's contents</param>
/// <param name="href">The location of the resource within the epub. Example:
/// "cover.jpg".</param>
public Resource(System.IO.Stream stream, string href)
: this(null, IOUtil.toByteArray(stream), href, MediatypeService.determineMediaType(href))
{
}
/// <summary>
/// Creates a resource with the given data at the specified href. The MediaType
/// will be determined based on the href extension. Assumes that if the data is of
/// a text type (html/css/etc) then the encoding will be UTF-8
/// </summary>
/// <see>nl.siegmann.epublib.service.MediatypeService.
/// determineMediaType(String)</see>
/// <param name="data">The Resource's contents</param>
/// <param name="href">The location of the resource within the epub. Example:
/// "chapter1.html".</param>
public Resource(byte[] data, string href)
: this(null, data, href, MediatypeService.determineMediaType(href), Constants.ENCODING)
{
}
/// <summary>
/// Creates an empty Resource with the given href. Assumes that if the data is of
/// a text type (html/css/etc) then the encoding will be UTF-8
/// </summary>
/// <param name="href">The location of the resource within the epub. Example:
/// "chapter1.html".</param>
public Resource(string href)
: this(null, new byte[0], href, MediatypeService.determineMediaType(href))
{
}
/// <summary>
/// Creates a Lazy resource, by not actually loading the data for this entry. The
/// data will be loaded on the first call to getData()
/// </summary>
/// <param name="fileName">the fileName for the epub we're created from.</param>
/// <param name="size">the size of this resource.</param>
/// <param name="href">The resource's href within the epub.</param>
public Resource(string fileName, long size, string href)
: this(null, null, href, MediatypeService.determineMediaType(href))
{
this.fileName = fileName;
this.cachedSize = size;
}
