private static void ValidateContentTypeProvider(IContentTypeProvider provider)
{
if (provider == null)
{
throw new InvalidContentTypeProviderException("External content type provider cannot be null");
}
if (!provider.CanRead && !provider.CanWrite)
{
throw new InvalidContentTypeProviderException($"Provider '{provider.GetType().RESTarTypeName()}' cannot read or write");
}
}
public TContentData Deserialize <TContentData>(string filePath) where TContentData : class, IContentData
{
using (var fileStream = File.OpenRead(filePath))
{
Type contentType;
// leave stream open so that the next streamReader can read the fileStream.
using (var streamReader = new StreamReader(fileStream, Encoding.UTF8, true, 1024, leaveOpen: true))
{
var eventReader = GetEventReader(streamReader);
YamlLayoutData layoutData;
try
{
// deserialize to YamlLayoutData so that we can find out which Layout to use.
layoutData = _yamlDeserializer.Deserialize <YamlLayoutData>(eventReader);
}
catch (YamlException ex)
{
throw new FrontMatterException("YAML Front Matter is missing or could not be parsed from the document: \r\n" + (ex.InnerException != null ? ex.InnerException.Message : ex.Message) + "\r\n\r\nFile: " + filePath);
}
contentType = layoutData != null && !string.IsNullOrEmpty(layoutData.Layout) ?
_contentTypeProvider.GetType(layoutData.Layout) :
typeof(ContentData);
}
fileStream.Seek(0, SeekOrigin.Begin);
using (var streamReader = new StreamReader(fileStream))
{
var eventReader = GetEventReader(streamReader);
var contentData = (TContentData)_yamlDeserializer.Deserialize(eventReader, contentType ?? typeof(ContentData));
if (contentData == null)
{
contentData = (TContentData)(IContentData) new ContentData();
}
contentData.Content = streamReader.ReadToEnd();
return(contentData);
}
}
}
private void ValidateContentTypeProvider(IContentTypeProvider provider)
{
if (provider == null)
{
throw new InvalidContentTypeProviderException("External content type provider cannot be null");
}
if (!provider.CanRead && !provider.CanWrite)
{
throw new InvalidContentTypeProviderException($"Content type provider '{provider.GetType().GetRESTableTypeName()}' can't read nor write. A content type provider " +
"must be able to either read or write.");
}
}