private static async Task<EpubGuide> ReadGuideAsync(XmlReader reader)
{
EpubGuide result = new EpubGuide();
while (await reader.ReadAsync() && !(reader.NodeType == XmlNodeType.EndElement && reader.LocalName == "guide"))
{
if (reader.LocalName.ToLowerInvariant() == "reference")
{
EpubGuideReference guideReference = new EpubGuideReference();
while (reader.MoveToNextAttribute())
{
switch (reader.LocalName.ToLowerInvariant())
{
case "type":
guideReference.Type = reader.Value;
break;
case "title":
guideReference.Title = reader.Value;
break;
case "href":
guideReference.Href = reader.Value;
break;
}
}
if (String.IsNullOrWhiteSpace(guideReference.Type))
throw new Exception("Incorrect EPUB guide: item type is missing");
if (String.IsNullOrWhiteSpace(guideReference.Href))
throw new Exception("Incorrect EPUB guide: item href is missing");
result.Add(guideReference);
}
}
return result;
}
private static EpubGuide ReadGuide(XmlNode guideNode)
{
EpubGuide result = new EpubGuide();
foreach (XmlNode guideReferenceNode in guideNode.ChildNodes)
if (String.Compare(guideReferenceNode.LocalName, "reference", StringComparison.OrdinalIgnoreCase) == 0)
{
EpubGuideReference guideReference = new EpubGuideReference();
foreach (XmlAttribute guideReferenceNodeAttribute in guideReferenceNode.Attributes)
{
string attributeValue = guideReferenceNodeAttribute.Value;
switch (guideReferenceNodeAttribute.Name.ToLowerInvariant())
{
case "type":
guideReference.Type = attributeValue;
break;
case "title":
guideReference.Title = attributeValue;
break;
case "href":
guideReference.Href = attributeValue;
break;
}
}
if (String.IsNullOrWhiteSpace(guideReference.Type))
throw new Exception("Incorrect EPUB guide: item type is missing");
if (String.IsNullOrWhiteSpace(guideReference.Href))
throw new Exception("Incorrect EPUB guide: item href is missing");
result.Add(guideReference);
}
return result;
}
