private static Saxon.Api.XsltTransformer LoadXsltDataInTransformer(Saxon.Api.XsltCompiler xslt, Stream stream)
{
XmlReader xml = XmlReader.Create(stream);
xslt.BaseUri = new Uri(string.IsNullOrEmpty(xml.BaseURI) ? "http://NOT.SET" : xml.BaseURI);
Saxon.Api.XsltExecutable executable = xslt.Compile(xml);
Saxon.Api.XsltTransformer transformer = executable.Load();
return(transformer);
}
public IEnumerable <IDocument> Execute(IReadOnlyList <IDocument> inputs, IExecutionContext context)
{
return(inputs.AsParallel().Select(input =>
{
try
{
Saxon.Api.Processor processor = new Saxon.Api.Processor();
Saxon.Api.XsltCompiler xslt = processor.NewXsltCompiler();
Saxon.Api.XsltTransformer transformer;
if (_xsltPath != null)
{
FilePath path = _xsltPath.Invoke <FilePath>(input, context);
if (path != null)
{
IFile file = context.FileSystem.GetInputFile(path);
if (file.Exists)
{
using (Stream fileStream = file.OpenRead())
{
Saxon.Api.XsltExecutable executable = xslt.Compile(fileStream);
transformer = executable.Load();
}
}
else
{
throw new FileNotFoundException("Couldn't find XSLT file", file.ToString());
}
}
else
{
throw new InvalidOperationException("Provided file path was not valid");
}
}
else if (_xsltGeneration != null)
{
IDocument xsltDocument = context.Execute(_xsltGeneration, new[] { input }).Single();
using (Stream stream = xsltDocument.GetStream())
{
var xml = XmlReader.Create(stream);
xslt.BaseUri = new Uri(string.IsNullOrEmpty(xml.BaseURI)?"http://temp.org": xml.BaseURI);
Saxon.Api.XsltExecutable executable = xslt.Compile(xml);
transformer = executable.Load();
}
}
else
{
//Should never happen, because of null check in Constructor.
throw new InvalidOperationException();
}
using (Stream stream = input.GetStream())
{
var documentBuilder = processor.NewDocumentBuilder();
documentBuilder.BaseUri = xslt.BaseUri;
var xdmNode = documentBuilder.Build(stream);
transformer.InitialContextNode = xdmNode;
using (System.IO.StringWriter writer = new StringWriter())
{
Saxon.Api.Serializer serializer = new Saxon.Api.Serializer();
serializer.SetOutputWriter(writer);
transformer.Run(serializer);
return context.GetDocument(input, writer.ToString());
}
}
}
catch (Exception e)
{
Trace.Error($"An {e.GetType().Name} occurred: {e.Message}");
return null;
}
}).Where(x => x != null));
}
