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[msbuild][r8] add r8 support to alter dx, proguard and desugar.
See #1423 for details. multidex support is not done yet (needs to investigate what's expected there).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| // Copyright (C) 2018 Xamarin, Inc. All rights reserved. | ||
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| using System; | ||
| using System.Linq; | ||
| using System.IO; | ||
| using Microsoft.Build.Framework; | ||
| using Microsoft.Build.Utilities; | ||
| using System.Text; | ||
| using System.Collections.Generic; | ||
| using Xamarin.Android.Tools; | ||
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| namespace Xamarin.Android.Tasks | ||
| { | ||
|
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| public class R8 : JavaToolTask | ||
| { | ||
| [Required] | ||
| public string R8JarPath { get; set; } | ||
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| [Required] | ||
| public string OutputDirectory { get; set; } | ||
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| public string Configuration { get; set; } | ||
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| // It is loaded to calculate --min-api, which is used by desugaring part to determine which levels of desugaring it performs. | ||
| [Required] | ||
| public string AndroidManifestFile { get; set; } | ||
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| // general r8 feature options. | ||
| public bool EnableDesugar { get; set; } | ||
| public bool EnableMinify { get; set; } // The Task has the option, but it is not supported at all. | ||
| public bool EnableTreeShaking { get; set; } | ||
|
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| // Java libraries to embed or reference | ||
| [Required] | ||
| public string ClassesZip { get; set; } | ||
| [Required] | ||
| public string JavaPlatformJarPath { get; set; } | ||
| public ITaskItem [] JavaLibrariesToEmbed { get; set; } | ||
| public ITaskItem [] JavaLibrariesToReference { get; set; } | ||
|
|
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| // used for proguard configuration settings | ||
| [Required] | ||
| public string AndroidSdkDirectory { get; set; } | ||
| [Required] | ||
| public string AcwMapFile { get; set; } | ||
| public string ProguardGeneratedReferenceConfiguration { get; set; } | ||
| public string ProguardGeneratedApplicationConfiguration { get; set; } | ||
| public string ProguardCommonXamarinConfiguration { get; set; } | ||
| [Required] | ||
| public string ProguardConfigurationFiles { get; set; } | ||
| public string ProguardMappingOutput { get; set; } | ||
|
|
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| // multidex | ||
| public bool EnableMultiDex { get; set; } | ||
| public string MultiDexMainDexListFile { get; set; } | ||
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| public string R8ExtraArguments { get; set; } | ||
|
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| public override bool Execute () | ||
| { | ||
| Log.LogDebugMessage ("R8 Task"); | ||
| Log.LogDebugTaskItems (" R8JarPath: ", R8JarPath); | ||
| Log.LogDebugTaskItems (" OutputDirectory: ", OutputDirectory); | ||
| Log.LogDebugTaskItems (" AndroidManifestFile: ", AndroidManifestFile); | ||
| Log.LogDebugMessage (" Configuration: {0}", Configuration); | ||
| Log.LogDebugTaskItems (" JavaPlatformJarPath: ", JavaPlatformJarPath); | ||
| Log.LogDebugTaskItems (" ClassesZip: ", ClassesZip); | ||
| Log.LogDebugTaskItems (" JavaLibrariesToEmbed: ", JavaLibrariesToEmbed); | ||
| Log.LogDebugTaskItems (" JavaLibrariesToReference: ", JavaLibrariesToReference); | ||
| Log.LogDebugMessage (" EnableDesugar: {0}", EnableDesugar); | ||
| Log.LogDebugMessage (" EnableTreeShaking: {0}", EnableTreeShaking); | ||
| Log.LogDebugTaskItems (" AndroidSdkDirectory:", AndroidSdkDirectory); | ||
| Log.LogDebugTaskItems (" AcwMapFile: ", AcwMapFile); | ||
| Log.LogDebugTaskItems (" ProguardGeneratedReferenceConfiguration:", ProguardGeneratedReferenceConfiguration); | ||
| Log.LogDebugTaskItems (" ProguardGeneratedApplicationConfiguration:", ProguardGeneratedApplicationConfiguration); | ||
| Log.LogDebugTaskItems (" ProguardCommonXamarinConfiguration:", ProguardCommonXamarinConfiguration); | ||
| Log.LogDebugTaskItems (" ProguardConfigurationFiles:", ProguardConfigurationFiles); | ||
| Log.LogDebugTaskItems (" ProguardMappingOutput:", ProguardMappingOutput); | ||
| Log.LogDebugMessage (" EnableMultiDex: {0}", EnableMultiDex); | ||
| Log.LogDebugTaskItems (" MultiDexMainDexListFile: ", MultiDexMainDexListFile); | ||
| Log.LogDebugTaskItems (" R8ExtraArguments: ", R8ExtraArguments); | ||
|
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| return base.Execute (); | ||
| } | ||
|
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| protected override string GenerateCommandLineCommands () | ||
| { | ||
| var cmd = new CommandLineBuilder (); | ||
|
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| cmd.AppendSwitchIfNotNull ("-jar ", R8JarPath); | ||
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| if (!string.IsNullOrEmpty (R8ExtraArguments)) | ||
| cmd.AppendSwitch (R8ExtraArguments); // it should contain "--dex". | ||
| if (Configuration.Equals ("Debug", StringComparison.OrdinalIgnoreCase)) | ||
| cmd.AppendSwitch ("--debug"); | ||
|
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| // generating proguard application configuration | ||
| if (EnableTreeShaking) { | ||
| var acwLines = File.ReadAllLines (AcwMapFile); | ||
| using (var appcfg = File.CreateText (ProguardGeneratedApplicationConfiguration)) | ||
| for (int i = 0; i + 2 < acwLines.Length; i += 3) | ||
| try { | ||
| var line = acwLines [i + 2]; | ||
| var java = line.Substring (line.IndexOf (';') + 1); | ||
| appcfg.WriteLine ("-keep class " + java + " { *; }"); | ||
| } catch { | ||
| // skip invalid lines | ||
| } | ||
| if (!string.IsNullOrWhiteSpace (ProguardCommonXamarinConfiguration)) | ||
| using (var xamcfg = File.Create (ProguardCommonXamarinConfiguration)) | ||
| GetType ().Assembly.GetManifestResourceStream ("proguard_xamarin.cfg").CopyTo (xamcfg); | ||
| var configs = ProguardConfigurationFiles | ||
| .Replace ("{sdk.dir}", AndroidSdkDirectory + Path.DirectorySeparatorChar) | ||
| .Replace ("{intermediate.common.xamarin}", ProguardCommonXamarinConfiguration) | ||
| .Replace ("{intermediate.references}", ProguardGeneratedReferenceConfiguration) | ||
| .Replace ("{intermediate.application}", ProguardGeneratedApplicationConfiguration) | ||
| .Replace ("{project}", string.Empty) // current directory anyways. | ||
| .Split (';') | ||
| .Select (s => s.Trim ()) | ||
| .Where (s => !string.IsNullOrWhiteSpace (s)); | ||
| var enclosingChar = "\""; | ||
| foreach (var file in configs) { | ||
| if (File.Exists (file)) | ||
| cmd.AppendSwitchUnquotedIfNotNull ("--pg-conf ", $"{enclosingChar}{file}{enclosingChar}"); | ||
| else | ||
| Log.LogWarning ("Proguard configuration file '{0}' was not found.", file); | ||
| } | ||
| cmd.AppendSwitchIfNotNull ("--pg-map-output ", ProguardMappingOutput); | ||
|
|
||
| // multidexing | ||
| if (EnableMultiDex) { | ||
| if (!string.IsNullOrWhiteSpace (MultiDexMainDexListFile) && File.Exists (MultiDexMainDexListFile)) | ||
| cmd.AppendSwitchIfNotNull ("--main-dex-list ", MultiDexMainDexListFile); | ||
| else | ||
| Log.LogWarning ($"MultiDex is enabled, but main dex list file '{MultiDexMainDexListFile}' does not exist."); | ||
| } | ||
| } | ||
|
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| // desugaring | ||
| var doc = AndroidAppManifest.Load (AndroidManifestFile, MonoAndroidHelper.SupportedVersions); | ||
| int minApiVersion = doc.MinSdkVersion == null ? 4 : (int)doc.MinSdkVersion; | ||
| cmd.AppendSwitchIfNotNull ("--min-api ", minApiVersion.ToString ()); | ||
|
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| if (!EnableTreeShaking) | ||
| cmd.AppendSwitch ("--no-tree-shaking"); | ||
| if (!EnableDesugar) | ||
| cmd.AppendSwitch ("--no-desugaring"); | ||
| if (!EnableMinify) | ||
| cmd.AppendSwitch ("--no-minification"); | ||
|
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| var injars = new List<string> (); | ||
| var libjars = new List<string> (); | ||
| injars.Add (ClassesZip); | ||
| if (JavaLibrariesToEmbed != null) | ||
| foreach (var jarfile in JavaLibrariesToEmbed) | ||
| injars.Add (jarfile.ItemSpec); | ||
| libjars.Add (JavaPlatformJarPath); | ||
| if (JavaLibrariesToReference != null) | ||
| foreach (var jarfile in JavaLibrariesToReference.Select (p => p.ItemSpec)) | ||
| libjars.Add (jarfile); | ||
|
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| cmd.AppendSwitchIfNotNull ("--output ", OutputDirectory); | ||
| foreach (var jar in libjars) | ||
| cmd.AppendSwitchIfNotNull ("--lib ", jar); | ||
| foreach (var jar in injars) | ||
| cmd.AppendFileNameIfNotNull (jar); | ||
|
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| return cmd.ToString (); | ||
| } | ||
| } | ||
|
|
||
| } |
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