1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package util.build; 18 19 import com.android.tools.r8.CompilationMode; 20 import com.android.tools.r8.D8; 21 import com.android.tools.r8.D8Command; 22 import com.android.tools.r8.OutputMode; 23 import java.nio.file.Files; 24 import java.nio.file.Path; 25 import java.nio.file.Paths; 26 import java.nio.file.attribute.BasicFileAttributes; 27 28 public class D8BuildStep extends BuildStep { 29 30 private final boolean deleteInputFileAfterBuild; 31 private final D8Command.Builder builder; 32 D8BuildStep(BuildFile inputFile, BuildFile outputFile, boolean deleteInputFileAfterBuild)33 D8BuildStep(BuildFile inputFile, BuildFile outputFile, boolean deleteInputFileAfterBuild) { 34 super(inputFile, outputFile); 35 this.deleteInputFileAfterBuild = deleteInputFileAfterBuild; 36 this.builder = 37 D8Command.builder() 38 .setMode(CompilationMode.DEBUG) 39 .setMinApiLevel(1000) 40 .setEnableDesugaring(false); 41 } 42 43 @Override build()44 boolean build() { 45 46 if (super.build()) { 47 try { 48 builder.setOutput(Paths.get(outputFile.fileName.getAbsolutePath()), OutputMode.DexIndexed); 49 Files.find( 50 Paths.get(inputFile.fileName.getAbsolutePath()), 51 1000, 52 D8BuildStep::isJarOrClassFile) 53 .forEach( 54 p -> { 55 try { 56 builder.addProgramFiles(p); 57 } catch (Throwable e) { 58 e.printStackTrace(); 59 } 60 }); 61 D8.run(builder.build()); 62 } catch (Throwable e) { 63 e.printStackTrace(); 64 return false; 65 } 66 if (deleteInputFileAfterBuild) { 67 inputFile.fileName.delete(); 68 } 69 return true; 70 } 71 return false; 72 } 73 74 @Override hashCode()75 public int hashCode() { 76 return inputFile.hashCode() ^ outputFile.hashCode(); 77 } 78 79 @Override equals(Object obj)80 public boolean equals(Object obj) { 81 if (super.equals(obj)) { 82 D8BuildStep other = (D8BuildStep) obj; 83 84 return inputFile.equals(other.inputFile) && outputFile.equals(other.outputFile); 85 } 86 return false; 87 } 88 isJarOrClassFile(Path file, BasicFileAttributes attrs)89 private static boolean isJarOrClassFile(Path file, BasicFileAttributes attrs) { 90 if (!attrs.isRegularFile()) { 91 return false; 92 } 93 String name = file.getFileName().toString().toLowerCase(); 94 return name.endsWith(".jar") || name.endsWith(".class"); 95 } 96 } 97