public Module Transform(Module module)
{
string fullModulePath = module.FullPath;
string moduleId = module.ModuleId;
string content = module.TransformedContent ?? _fileSystem.File.ReadAllText(fullModulePath);
dotless.Core.EngineFactory factory = new dotless.Core.EngineFactory(new dotless.Core.configuration.DotlessConfiguration {
Debug = true, ImportAllFilesAsLess = true, InlineCssFiles = true, MinifyOutput = true
});
// Temporary solution until Pandora is exposed by Dotless.
FileReader.FileSystem = _fileSystem;
factory.Configuration.LessSource = typeof(FileReader);
var engine = factory.GetEngine();
engine.CurrentDirectory = _fileSystem.Path.GetFullPath(_fileSystem.Path.GetDirectoryName(fullModulePath));
var css = engine.TransformToCss(content, moduleId);
CssToJsModule cssTransformer = new CssToJsModule();
module.OriginalContent = module.OriginalContent ?? content;
module.TransformedContent = cssTransformer.Build(css, moduleId);
return(module);
}
public string CompileString(string less, string basePath, params string[] libPaths) {
var lessFactory = new dotless.Core.EngineFactory(new DotlessConfiguration() { MinifyOutput = true });
less = ResolveImports(less, basePath, libPaths);
return lessFactory.GetEngine().TransformToCss(less, SanitizePath(basePath));
}
public void ProcessRequest(HttpContext context)
{
var host = Host.Get(Host.DefaultId);
var lastModifiedDateUtc = Configuration.LastModifiedDateUtc;
if (lastModifiedDateUtc > DateTime.UtcNow)
{
lastModifiedDateUtc = DateTime.UtcNow;
}
context.Response.ContentType = "text/css";
var cacheKey = CacheKey + host.AbsoluteUrl("~/");
var cachedStyleSheet = host.Cache.Get(cacheKey) as CachedStyleSheet;
if (cachedStyleSheet == null || cachedStyleSheet.LastModifiedDateUtc < lastModifiedDateUtc)
{
cachedStyleSheet = new CachedStyleSheet();
cachedStyleSheet.LastModifiedDateUtc = lastModifiedDateUtc;
cachedStyleSheet.StyleSheet = string.Empty;
var styleSheets = Configuration.StyleSheets;
if (styleSheets != null)
{
var less = string.Join("\n", styleSheets);
var config = new dotless.Core.configuration.DotlessConfiguration();
config.CacheEnabled = false;
config.Debug = false;
config.DisableParameters = false;
config.DisableUrlRewriting = true;
config.DisableVariableRedefines = false;
config.HandleWebCompression = false;
config.ImportAllFilesAsLess = false;
config.InlineCssFiles = false;
config.KeepFirstSpecialComment = false;
config.MapPathsToWeb = false;
config.MinifyOutput = false;
config.Web = false;
config.LessSource = typeof(LessFileReader);
config.LogLevel = dotless.Core.Loggers.LogLevel.Warn;
config.Logger = typeof(DotLessLogger);
config.SessionMode = dotless.Core.configuration.DotlessSessionStateMode.Disabled;
try
{
var engine = new dotless.Core.EngineFactory(config).GetEngine();
cachedStyleSheet.StyleSheet = engine.TransformToCss(UpdateEmbeddedFileReferences(context, less), null) + ((DotLessLogger)((dotless.Core.LessEngine)((dotless.Core.ParameterDecorator)engine).Underlying).Logger).GetMessages();
}
catch (Exception ex)
{
host.LogError("An error occurred while processing LESS directives in stylesheets.", ex);
context.Response.StatusCode = 500;
return;
}
}
host.Cache.Put(cacheKey, cachedStyleSheet, 30 * 60);
}
context.Response.Cache.SetAllowResponseInBrowserHistory(true);
context.Response.Cache.SetLastModified(lastModifiedDateUtc);
context.Response.Cache.SetETag(lastModifiedDateUtc.Ticks.ToString());
context.Response.Cache.SetCacheability(HttpCacheability.Public);
context.Response.Cache.SetExpires(DateTime.UtcNow.AddHours(2));
context.Response.Cache.SetValidUntilExpires(false);
context.Response.Write(cachedStyleSheet.StyleSheet);
}
