public static ItemGenerationStatusEventArgs CreateGenerating(Template template, TemplateOutputDefinitionFilenameResult result)
{
if (template == null)
throw new ArgumentNullException("template");
if (result == null)
throw new ArgumentNullException("result");
return new ItemGenerationStatusEventArgs(template, result, GenerationStatus.Generating);
}
protected ItemGenerationStatusEventArgs(Template template, TemplateOutputDefinitionFilenameResult result, GenerationStatus status, Exception error = null)
: base(template, status, error)
{
this.Result = result;
}
/// <summary>Processes a single template to one or more output files using the provided project XML.</summary>
private Task GenerateOutputAsync(string projectXml, Template template, XslCompiledTransform compiledTransform, TemplateOutputDefinitionFilenameResult output) {
// Report status and do sanity checks upfront.
OnItemGenerationStatus(ItemGenerationStatusEventArgs.CreateGenerating(template, output));
if (File.Exists(output.Value))
{
try
{
File.Delete(output.Value);
}
catch (Exception ex)
{
Generator.Logger.Error(ex);
OnItemGenerationStatus(ItemGenerationStatusEventArgs.CreateError(template, output, new ApplicationException("Unable to delete existing file.", ex)));
return Task.CompletedTask;
}
}
try {
Directory.CreateDirectory(Path.GetDirectoryName(output.Value));
}
catch (Exception ex) {
Generator.Logger.Error(ex);
OnItemGenerationStatus(ItemGenerationStatusEventArgs.CreateError(template, output, new ApplicationException("Unable to create output directory.", ex)));
return Task.CompletedTask;
}
// Perform the actual processing async.
return Task.Run(() => {
try {
using (StringReader stringReader = new StringReader(projectXml)) {
XmlReaderSettings xmlReaderSettings = new XmlReaderSettings() {
DtdProcessing = DtdProcessing.Parse
};
using (XmlReader xmlReader = XmlReader.Create(stringReader, xmlReaderSettings)) {
XsltArgumentList arguments = new XsltArgumentList();
arguments.AddParam(Template.Param_Name, string.Empty, template.Name);
if (!output.ElementName.IsNullOrEmpty())
arguments.AddParam(TemplateOutputDefinitionFilenameResult.Param_ElementName, string.Empty, output.ElementName);
using (FileStream outputStream = File.Create(output.Value))
using (XmlWriter xmlWriter = XmlWriter.Create(outputStream, compiledTransform.OutputSettings)) {
compiledTransform.Transform(xmlReader, arguments, xmlWriter);
}
}
}
PerformPostProcessing(output.Value);
}
catch (Exception ex) {
Generator.Logger.Error(ex);
OnItemGenerationStatus(ItemGenerationStatusEventArgs.CreateError(template, output, new ApplicationException("Unable to generate the output. Error writing to the specified path or the template or input XML is not valid.", ex)));
return;
}
OnItemGenerationStatus(ItemGenerationStatusEventArgs.CreateComplete(template, output));
});
}
