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| 1 | +// Copyright (C) 2018 Xamarin, Inc. All rights reserved. |
| 2 | + |
| 3 | +using System; |
| 4 | +using System.Linq; |
| 5 | +using System.IO; |
| 6 | +using Microsoft.Build.Framework; |
| 7 | +using Microsoft.Build.Utilities; |
| 8 | +using System.Text; |
| 9 | +using System.Collections.Generic; |
| 10 | +using Xamarin.Android.Tools; |
| 11 | + |
| 12 | +namespace Xamarin.Android.Tasks |
| 13 | +{ |
| 14 | + |
| 15 | + public class R8 : JavaToolTask |
| 16 | + { |
| 17 | + [Required] |
| 18 | + public string R8JarPath { get; set; } |
| 19 | + |
| 20 | + [Required] |
| 21 | + public string OutputDirectory { get; set; } |
| 22 | + |
| 23 | + public string Configuration { get; set; } |
| 24 | + |
| 25 | + // It is loaded to calculate --min-api, which is used by desugaring part to determine which levels of desugaring it performs. |
| 26 | + [Required] |
| 27 | + public string AndroidManifestFile { get; set; } |
| 28 | + |
| 29 | + // general r8 feature options. |
| 30 | + public bool EnableDesugar { get; set; } |
| 31 | + public bool EnableMinify { get; set; } // The Task has the option, but it is not supported at all. |
| 32 | + public bool EnableTreeShaking { get; set; } |
| 33 | + |
| 34 | + // Java libraries to embed or reference |
| 35 | + [Required] |
| 36 | + public string ClassesZip { get; set; } |
| 37 | + [Required] |
| 38 | + public string JavaPlatformJarPath { get; set; } |
| 39 | + public ITaskItem [] JavaLibrariesToEmbed { get; set; } |
| 40 | + public ITaskItem [] JavaLibrariesToReference { get; set; } |
| 41 | + |
| 42 | + // used for proguard configuration settings |
| 43 | + [Required] |
| 44 | + public string AndroidSdkDirectory { get; set; } |
| 45 | + [Required] |
| 46 | + public string AcwMapFile { get; set; } |
| 47 | + public string ProguardGeneratedReferenceConfiguration { get; set; } |
| 48 | + public string ProguardGeneratedApplicationConfiguration { get; set; } |
| 49 | + public string ProguardCommonXamarinConfiguration { get; set; } |
| 50 | + [Required] |
| 51 | + public string ProguardConfigurationFiles { get; set; } |
| 52 | + public string ProguardMappingOutput { get; set; } |
| 53 | + |
| 54 | + // multidex |
| 55 | + public string MultiDexMainDexListFile { get; set; } |
| 56 | + |
| 57 | + public string R8ExtraArguments { get; set; } |
| 58 | + |
| 59 | + public override bool Execute () |
| 60 | + { |
| 61 | + Log.LogDebugMessage ("R8 Task"); |
| 62 | + Log.LogDebugTaskItems (" R8JarPath: ", R8JarPath); |
| 63 | + Log.LogDebugTaskItems (" OutputDirectory: ", OutputDirectory); |
| 64 | + Log.LogDebugTaskItems (" AndroidManifestFile: ", AndroidManifestFile); |
| 65 | + Log.LogDebugMessage (" Configuration: {0}", Configuration); |
| 66 | + Log.LogDebugTaskItems (" JavaPlatformJarPath: ", JavaPlatformJarPath); |
| 67 | + Log.LogDebugTaskItems (" ClassesZip: ", ClassesZip); |
| 68 | + Log.LogDebugTaskItems (" JavaLibrariesToEmbed: ", JavaLibrariesToEmbed); |
| 69 | + Log.LogDebugTaskItems (" JavaLibrariesToReference: ", JavaLibrariesToReference); |
| 70 | + Log.LogDebugMessage (" EnableDesugar: {0}", EnableDesugar); |
| 71 | + Log.LogDebugMessage (" EnableTreeShaking: {0}", EnableTreeShaking); |
| 72 | + Log.LogDebugTaskItems (" AndroidSdkDirectory:", AndroidSdkDirectory); |
| 73 | + Log.LogDebugTaskItems (" AcwMapFile: ", AcwMapFile); |
| 74 | + Log.LogDebugTaskItems (" ProguardGeneratedReferenceConfiguration:", ProguardGeneratedReferenceConfiguration); |
| 75 | + Log.LogDebugTaskItems (" ProguardGeneratedApplicationConfiguration:", ProguardGeneratedApplicationConfiguration); |
| 76 | + Log.LogDebugTaskItems (" ProguardCommonXamarinConfiguration:", ProguardCommonXamarinConfiguration); |
| 77 | + Log.LogDebugTaskItems (" ProguardConfigurationFiles:", ProguardConfigurationFiles); |
| 78 | + Log.LogDebugTaskItems (" ProguardMappingOutput:", ProguardMappingOutput); |
| 79 | + Log.LogDebugTaskItems (" MultiDexMainDexListFile: ", MultiDexMainDexListFile); |
| 80 | + Log.LogDebugTaskItems (" R8ExtraArguments: ", R8ExtraArguments); |
| 81 | + |
| 82 | + return base.Execute (); |
| 83 | + } |
| 84 | + |
| 85 | + protected override string GenerateCommandLineCommands () |
| 86 | + { |
| 87 | + var cmd = new CommandLineBuilder (); |
| 88 | + |
| 89 | + cmd.AppendSwitchIfNotNull ("-jar ", R8JarPath); |
| 90 | + |
| 91 | + if (!string.IsNullOrEmpty (R8ExtraArguments)) |
| 92 | + cmd.AppendSwitch (R8ExtraArguments); // it should contain "--dex". |
| 93 | + if (Configuration.Equals ("Debug", StringComparison.OrdinalIgnoreCase)) |
| 94 | + cmd.AppendSwitch ("--debug"); |
| 95 | + |
| 96 | + // generating proguard application configuration |
| 97 | + if (EnableTreeShaking) { |
| 98 | + var acwLines = File.ReadAllLines (AcwMapFile); |
| 99 | + using (var appcfg = File.CreateText (ProguardGeneratedApplicationConfiguration)) |
| 100 | + for (int i = 0; i + 2 < acwLines.Length; i += 3) |
| 101 | + try { |
| 102 | + var line = acwLines [i + 2]; |
| 103 | + var java = line.Substring (line.IndexOf (';') + 1); |
| 104 | + appcfg.WriteLine ("-keep class " + java + " { *; }"); |
| 105 | + } catch { |
| 106 | + // skip invalid lines |
| 107 | + } |
| 108 | + if (!string.IsNullOrWhiteSpace (ProguardCommonXamarinConfiguration)) |
| 109 | + using (var xamcfg = File.Create (ProguardCommonXamarinConfiguration)) |
| 110 | + GetType ().Assembly.GetManifestResourceStream ("proguard_xamarin.cfg").CopyTo (xamcfg); |
| 111 | + var configs = ProguardConfigurationFiles |
| 112 | + .Replace ("{sdk.dir}", AndroidSdkDirectory + Path.DirectorySeparatorChar) |
| 113 | + .Replace ("{intermediate.common.xamarin}", ProguardCommonXamarinConfiguration) |
| 114 | + .Replace ("{intermediate.references}", ProguardGeneratedReferenceConfiguration) |
| 115 | + .Replace ("{intermediate.application}", ProguardGeneratedApplicationConfiguration) |
| 116 | + .Replace ("{project}", string.Empty) // current directory anyways. |
| 117 | + .Split (';') |
| 118 | + .Select (s => s.Trim ()) |
| 119 | + .Where (s => !string.IsNullOrWhiteSpace (s)); |
| 120 | + var enclosingChar = "\""; |
| 121 | + foreach (var file in configs) { |
| 122 | + if (File.Exists (file)) |
| 123 | + cmd.AppendSwitchUnquotedIfNotNull ("--pg-conf ", $"{enclosingChar}{file}{enclosingChar}"); |
| 124 | + else |
| 125 | + Log.LogWarning ("Proguard configuration file '{0}' was not found.", file); |
| 126 | + } |
| 127 | + cmd.AppendSwitchIfNotNull ("--pg-map-output ", ProguardMappingOutput); |
| 128 | + |
| 129 | + // multidexing |
| 130 | + if (!string.IsNullOrWhiteSpace (MultiDexMainDexListFile) && File.Exists (MultiDexMainDexListFile)) |
| 131 | + cmd.AppendSwitchIfNotNull ("--main-dex-list ", MultiDexMainDexListFile); |
| 132 | + } |
| 133 | + |
| 134 | + // desugaring |
| 135 | + var doc = AndroidAppManifest.Load (AndroidManifestFile, MonoAndroidHelper.SupportedVersions); |
| 136 | + int minApiVersion = doc.MinSdkVersion == null ? 4 : (int)doc.MinSdkVersion; |
| 137 | + cmd.AppendSwitchIfNotNull ("--min-api ", minApiVersion.ToString ()); |
| 138 | + |
| 139 | + if (!EnableTreeShaking) |
| 140 | + cmd.AppendSwitch ("--no-tree-shaking"); |
| 141 | + if (!EnableDesugar) |
| 142 | + cmd.AppendSwitch ("--no-desugaring"); |
| 143 | + if (!EnableMinify) |
| 144 | + cmd.AppendSwitch ("--no-minification"); |
| 145 | + |
| 146 | + var injars = new List<string> (); |
| 147 | + var libjars = new List<string> (); |
| 148 | + injars.Add (ClassesZip); |
| 149 | + if (JavaLibrariesToEmbed != null) |
| 150 | + foreach (var jarfile in JavaLibrariesToEmbed) |
| 151 | + injars.Add (jarfile.ItemSpec); |
| 152 | + libjars.Add (JavaPlatformJarPath); |
| 153 | + if (JavaLibrariesToReference != null) |
| 154 | + foreach (var jarfile in JavaLibrariesToReference.Select (p => p.ItemSpec)) |
| 155 | + libjars.Add (jarfile); |
| 156 | + |
| 157 | + cmd.AppendSwitchIfNotNull ("--output ", OutputDirectory); |
| 158 | + foreach (var jar in libjars) |
| 159 | + cmd.AppendSwitchIfNotNull ("--lib ", jar); |
| 160 | + foreach (var jar in injars) |
| 161 | + cmd.AppendFileNameIfNotNull (jar); |
| 162 | + |
| 163 | + return cmd.ToString (); |
| 164 | + } |
| 165 | + } |
| 166 | + |
| 167 | +} |
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