/// <summary>
/// Transforms the content of the given string from Less into CSS.
/// </summary>
/// <param name="input">The input string to transform.</param>
/// <param name="path">The path to the given input string to transform.</param>
/// <param name="cruncher">The cruncher that is running the transform.</param>
/// <returns>The transformed string.</returns>
public string Transform(string input, string path, CruncherBase cruncher)
{
// The standard engine returns a FileNotFoundExecption so I've rolled my own path resolver.
Parser parser = new Parser();
DotLessPathResolver dotLessPathResolver = new DotLessPathResolver(path);
FileReader fileReader = new FileReader(dotLessPathResolver);
parser.Importer = new Importer(fileReader);
ILessEngine lessEngine = new LessEngine(parser);
try
{
string result = lessEngine.TransformToCss(input, path);
if (cruncher.Options.CacheFiles)
{
// Add each import as a file dependency so that the cache will clean itself.
IEnumerable<string> imports = lessEngine.GetImports();
IList<string> enumerable = imports as IList<string> ?? imports.ToList();
if (enumerable.Any())
{
foreach (string import in enumerable)
{
if (!import.Contains(Uri.SchemeDelimiter))
{
string filePath =
HostingEnvironment.MapPath(VirtualPathUtility.Combine(dotLessPathResolver.CurrentFileDirectory, import));
cruncher.AddFileMonitor(filePath, "not empty");
}
}
}
}
return result;
}
catch (Exception ex)
{
throw new LessCompilingException(ex.Message, ex.InnerException);
}
}
public CdfFileReader()
{
_innerReader = new FileReader(
new CdfPathResolver(new HttpContextWrapper(HttpContext.Current), (string)HttpContext.Current.Items["Cdf_LessWriter_origUrl"]));
}