private static async System.Threading.Tasks.Task<EpubManifest> ReadManifestAsync(XmlReader reader)
{
EpubManifest result = new EpubManifest();
bool isManifestFound = await reader.ReadToFollowingAsync("manifest", "http://www.idpf.org/2007/opf");
if (!isManifestFound)
throw new Exception("EPUB parsing error: manifest declarations not found in the package.");
while (await reader.ReadAsync() && !(reader.NodeType == XmlNodeType.EndElement && reader.LocalName == "manifest"))
{
if (!String.IsNullOrWhiteSpace(reader.LocalName))
{
EpubManifestItem manifestItem = new EpubManifestItem();
switch (reader.LocalName.ToLowerInvariant())
{
case "item":
while (reader.MoveToNextAttribute())
{
switch (reader.LocalName.ToLowerInvariant())
{
case "id":
manifestItem.Id = reader.Value;
break;
case "href":
manifestItem.Href = reader.Value;
break;
case "media-type":
manifestItem.MediaType = reader.Value;
break;
case "required-namespace":
manifestItem.RequiredNamespace = reader.Value;
break;
case "required-modules":
manifestItem.RequiredModules = reader.Value;
break;
case "fallback":
manifestItem.Fallback = reader.Value;
break;
case "fallback-style":
manifestItem.FallbackStyle = reader.Value;
break;
}
}
break;
}
if (String.IsNullOrWhiteSpace(manifestItem.Id))
throw new Exception("Incorrect EPUB manifest: item ID is missing");
if (String.IsNullOrWhiteSpace(manifestItem.Href))
throw new Exception("Incorrect EPUB manifest: item href is missing");
if (String.IsNullOrWhiteSpace(manifestItem.MediaType))
throw new Exception("Incorrect EPUB manifest: item media type is missing");
result.Add(manifestItem);
}
}
return result;
}
private static EpubManifest ReadManifest(XmlNode manifestNode)
{
EpubManifest result = new EpubManifest();
foreach (XmlNode manifestItemNode in manifestNode.ChildNodes)
if (String.Compare(manifestItemNode.LocalName, "item", StringComparison.OrdinalIgnoreCase) == 0)
{
EpubManifestItem manifestItem = new EpubManifestItem();
foreach (XmlAttribute manifestItemNodeAttribute in manifestItemNode.Attributes)
{
string attributeValue = manifestItemNodeAttribute.Value;
switch (manifestItemNodeAttribute.Name.ToLowerInvariant())
{
case "id":
manifestItem.Id = attributeValue;
break;
case "href":
manifestItem.Href = attributeValue;
break;
case "media-type":
manifestItem.MediaType = attributeValue;
break;
case "required-namespace":
manifestItem.RequiredNamespace = attributeValue;
break;
case "required-modules":
manifestItem.RequiredModules = attributeValue;
break;
case "fallback":
manifestItem.Fallback = attributeValue;
break;
case "fallback-style":
manifestItem.FallbackStyle = attributeValue;
break;
}
}
if (String.IsNullOrWhiteSpace(manifestItem.Id))
throw new Exception("Incorrect EPUB manifest: item ID is missing");
if (String.IsNullOrWhiteSpace(manifestItem.Href))
throw new Exception("Incorrect EPUB manifest: item href is missing");
if (String.IsNullOrWhiteSpace(manifestItem.MediaType))
throw new Exception("Incorrect EPUB manifest: item media type is missing");
result.Add(manifestItem);
}
return result;
}
