using System; using System.Collections.Generic; using System.IO; using System.IO.Compression; using System.Linq; using System.Net; using System.Text; using Microsoft.Build.Framework; using Microsoft.Build.Utilities; using Mono.Cecil; using Mono.Linker; using Mono.Linker.Steps; namespace Ooui.Wasm.Build.Tasks { public class BuildDistTask : Task { const string SdkUrl = "https://jenkins.mono-project.com/job/test-mono-mainline-webassembly/62/label=highsierra/Azure/processDownloadRequest/62/highsierra/sdks/wasm/mono-wasm-ddf4e7be31b.zip"; [Required] public string Assembly { get; set; } [Required] public string OutputPath { get; set; } public string ReferencePath { get; set; } public override bool Execute () { try { InstallSdk (); GetBcl (); CreateDist (); CopyRuntime (); LinkAssemblies (); ExtractClientJs (); DiscoverEntryPoint (); GenerateHtml (); return true; } catch (Exception ex) { Log.LogErrorFromException (ex); return false; } } string sdkPath; void InstallSdk () { var sdkName = Path.GetFileNameWithoutExtension (new Uri (SdkUrl).AbsolutePath.Replace ('/', Path.DirectorySeparatorChar)); Log.LogMessage ("SDK: " + sdkName); sdkPath = Path.Combine (Path.GetTempPath (), sdkName); Log.LogMessage ("SDK Path: " + sdkPath); if (Directory.Exists (sdkPath)) return; var client = new WebClient (); var zipPath = sdkPath + ".zip"; Log.LogMessage ($"Downloading {sdkName} to {zipPath}"); client.DownloadFile (SdkUrl, zipPath); ZipFile.ExtractToDirectory (zipPath, sdkPath); Log.LogMessage ($"Extracted {sdkName} to {sdkPath}"); } string bclPath; Dictionary bclAssemblies; void GetBcl () { bclPath = Path.Combine (sdkPath, "bcl"); var reals = Directory.GetFiles (bclPath, "*.dll"); var facades = Directory.GetFiles (Path.Combine (bclPath, "Facades"), "*.dll"); var allFiles = reals.Concat (facades); bclAssemblies = allFiles.ToDictionary (x => Path.GetFileName (x)); } string distPath; string managedPath; void CreateDist () { var outputPath = Path.GetFullPath (OutputPath); distPath = Path.Combine (outputPath, "dist"); managedPath = Path.Combine (distPath, "managed"); Directory.CreateDirectory (managedPath); } void CopyRuntime () { var rtPath = Path.Combine (sdkPath, "release"); var files = new[] { "mono.wasm", "mono.js" }; foreach (var f in files) { var src = Path.Combine (rtPath, f); var dest = Path.Combine (distPath, f); Log.LogMessage ($"Runtime {src} -> {dest}"); File.Copy (src, dest, true); } File.Copy (Path.Combine (sdkPath, "server.py"), Path.Combine (distPath, "server.py"), true); } List linkedAsmPaths; List refpaths; void LinkAssemblies () { var references = ReferencePath.Split (';').Select (x => x.Trim ()).Where (x => x.Length > 0).ToList (); refpaths = new List (); foreach (var r in references) { var name = Path.GetFileName (r); if (bclAssemblies.ContainsKey (name)) { refpaths.Add (bclAssemblies[name]); } else { refpaths.Add (r); } } var asmPath = Path.GetFullPath (Assembly); var pipeline = GetLinkerPipeline (); using (var context = new LinkContext (pipeline)) { context.CoreAction = AssemblyAction.CopyUsed; context.UserAction = AssemblyAction.CopyUsed; context.OutputDirectory = managedPath; pipeline.PrependStep (new ResolveFromAssemblyStep (asmPath, ResolveFromAssemblyStep.RootVisibility.Any)); var refdirs = refpaths.Select (x => Path.GetDirectoryName (x)).Distinct ().ToList (); refdirs.Insert (0, Path.Combine (bclPath, "Facades")); refdirs.Insert (0, bclPath); foreach (var d in refdirs.Distinct ()) { context.Resolver.AddSearchDirectory (d); } pipeline.AddStepAfter (typeof (LoadReferencesStep), new LoadI18nAssemblies (I18nAssemblies.None)); foreach (var dll in Directory.GetFiles (managedPath, "*.dll")) { File.Delete (dll); } pipeline.Process (context); } linkedAsmPaths = Directory.GetFiles (managedPath, "*.dll").OrderBy (x => Path.GetFileName (x)).ToList (); } class PreserveUsingAttributesStep : ResolveStep { readonly HashSet ignoreAsmNames; public PreserveUsingAttributesStep (IEnumerable ignoreAsmNames) { this.ignoreAsmNames = new HashSet (ignoreAsmNames); } protected override void Process () { var asms = Context.GetAssemblies (); foreach (var a in asms.Where (x => !ignoreAsmNames.Contains (x.Name.Name))) { foreach (var m in a.Modules) { foreach (var t in m.Types) { PreserveTypeIfRequested (t); } } } } void PreserveTypeIfRequested (TypeDefinition type) { var typePreserved = IsTypePreserved (type); if (IsTypePreserved (type)) { MarkAndPreserveAll (type); } else { foreach (var m in type.Methods.Where (IsMethodPreserved)) { Annotations.AddPreservedMethod (type, m); } foreach (var t in type.NestedTypes) { PreserveTypeIfRequested (t); } } } static bool IsTypePreserved (TypeDefinition m) { return m.CustomAttributes.FirstOrDefault (x => x.AttributeType.Name.StartsWith ("Preserve", StringComparison.Ordinal)) != null; } static bool IsMethodPreserved (MethodDefinition m) { return m.CustomAttributes.FirstOrDefault (x => x.AttributeType.Name.StartsWith ("Preserve", StringComparison.Ordinal)) != null; } void MarkAndPreserveAll (TypeDefinition type) { Annotations.MarkAndPush (type); Annotations.SetPreserve (type, TypePreserve.All); if (!type.HasNestedTypes) { Tracer.Pop (); return; } foreach (TypeDefinition nested in type.NestedTypes) MarkAndPreserveAll (nested); Tracer.Pop (); } } Pipeline GetLinkerPipeline () { var p = new Pipeline (); p.AppendStep (new LoadReferencesStep ()); p.AppendStep (new PreserveUsingAttributesStep (bclAssemblies.Values.Select (Path.GetFileNameWithoutExtension))); p.AppendStep (new BlacklistStep ()); p.AppendStep (new TypeMapStep ()); p.AppendStep (new MarkStep ()); p.AppendStep (new SweepStep ()); p.AppendStep (new CleanStep ()); p.AppendStep (new RegenerateGuidStep ()); p.AppendStep (new OutputStep ()); return p; } void ExtractClientJs () { var oouiPath = refpaths.FirstOrDefault (x => Path.GetFileName (x).Equals ("Ooui.dll", StringComparison.InvariantCultureIgnoreCase)); if (oouiPath == null) { Log.LogError ("Ooui.dll not included in the project"); return; } var oouiAsm = AssemblyDefinition.ReadAssembly (oouiPath); var clientJs = oouiAsm.MainModule.Resources.FirstOrDefault (x => x.Name.EndsWith ("Client.js", StringComparison.InvariantCultureIgnoreCase)) as EmbeddedResource; if (clientJs == null) { Log.LogError ("Ooui.dll missing client javascript"); return; } var dest = Path.Combine (distPath, "ooui.js"); using (var srcs = clientJs.GetResourceStream ()) { using (var dests = new FileStream (dest, FileMode.Create, FileAccess.Write)) { srcs.CopyTo (dests); } } Log.LogMessage ($"Client JS {dest}"); } MethodDefinition entryPoint; void DiscoverEntryPoint () { var asm = AssemblyDefinition.ReadAssembly (Assembly); entryPoint = asm.EntryPoint; if (entryPoint == null) { throw new Exception ($"{Path.GetFileName (Assembly)} is missing an entry point"); } } void GenerateHtml () { var htmlPath = Path.Combine (distPath, "index.html"); using (var w = new StreamWriter (htmlPath, false, new UTF8Encoding (false))) { w.Write (@"

Loading...

"); } Log.LogMessage ($"HTML {htmlPath}"); } } }