public List <EngineResult> Process(string contents, string filename)
{
var doc = GetXml(contents);
IEnumerable <XElement> fileGroups = doc.Descendants("FileGroup").ToList();
if (fileGroups.Count() == 0)
{
fileGroups = new[] { new XElement("FileGroup", new XAttribute("Path", filename), doc) }
}
;
return(fileGroups
.SelectMany(fileGroup => GetEngineResult(fileGroup, filename))
.ToList());
}
IEnumerable <EngineResult> GetEngineResult(XElement fileGroup, string filename)
{
var result = new EngineResult();
if (fileGroup.Attribute("Path") == null)
{
result.AddException("FileGroup element requires a Path attribute", filename, ErrorCategory.Error);
yield return(result);
yield break;
}
var fileGroupPath = (string)fileGroup.Attribute("Path");
var files = GetFiles(fileGroup)
.Select(file => FileHandler.GetAbsoluteFileName(file, filename))
.ToLookup(FileHandler.FileExists);
// add a warning for each missing file
foreach (var file in files[false])
{
result.AddException(string.Format("File does not exist '{0}'", file), filename, ErrorCategory.Warning);
}
// get the contents of all existing files and join them together
var fileGroupContents = string.Join("\n", files[true].Select(file => FileHandler.GetContents(file)));
result.FileName = fileGroupPath;
result.Contents = fileGroupContents;
yield return(result);
var engine = EngineResolver.GetEngineByFilename(fileGroupPath);
if (engine == null)
{
yield break;
}
var engineResults = engine.Process(fileGroupContents, fileGroupPath);
foreach (var engineResult in engineResults)
{
if (string.IsNullOrEmpty(engineResult.FileName))
{
engineResult.FileName = fileGroupPath;
}
yield return(engineResult);
}
}
