Java tutorial
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We also recommend that a * file or class name and description of purpose be included on the * same "printed page" as the copyright notice for easier * identification within third-party archives. * * Copyright 2016 Alibaba Group * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * */ package com.android.build.gradle.internal.pipeline; import com.android.annotations.NonNull; import com.android.annotations.Nullable; import com.android.build.api.transform.QualifiedContent; import com.android.build.api.transform.QualifiedContent.Scope; import com.android.build.api.transform.Transform; import com.android.build.gradle.internal.scope.VariantScope; import com.android.build.gradle.internal.tasks.DefaultAndroidTask; import com.android.builder.model.AndroidProject; import com.android.builder.profile.ThreadRecorder; import com.android.utils.FileUtils; import com.android.utils.StringHelper; import com.google.common.collect.Lists; import org.apache.commons.lang3.reflect.FieldUtils; import org.gradle.api.Project; import org.gradle.api.tasks.StopExecutionException; import org.gradle.api.tasks.TaskCollection; import org.jetbrains.annotations.NotNull; import java.io.File; import java.lang.reflect.Field; import java.util.Collection; import java.util.Iterator; import java.util.List; import java.util.Locale; import java.util.Set; import java.util.SortedMap; import static com.android.utils.StringHelper.capitalize; /** * TransformManger?, ?class->dex * Created by shenghua.nish on 2016-06-13 ?2:02. */ public class InjectTransformManager { private static final String FD_TRANSFORMS = "transforms"; private List<Transform> transforms = Lists.newArrayList(); private List<String> transformTaskList = Lists.newArrayList(); private final Project project; private final String variantName; public InjectTransformManager(Project project, @NonNull String variantName) { this.project = project; this.variantName = variantName; } public void reset() { transforms.clear(); transformTaskList.clear(); } /** * ??Transform?Transform? * * @param transformClazz * @param injectTransform * @param scope * @param <T> * @return */ public <T extends InjectTransform> TransformTask addInjectTransformBeforeTransform( Class<? extends Transform> transformClazz, T injectTransform, @NonNull VariantScope scope) { TaskCollection<DefaultAndroidTask> androidTasks = project.getTasks().withType(DefaultAndroidTask.class); SortedMap<String, DefaultAndroidTask> androidTaskSortedMap = androidTasks.getAsMap(); TransformTask oprTransformTask = null; // ?? for (String taskName : androidTaskSortedMap.keySet()) { DefaultAndroidTask androidTask = androidTaskSortedMap.get(taskName); if (variantName.equals(androidTask.getVariantName())) { if (androidTask instanceof TransformTask && ((TransformTask) androidTask).getTransform().getClass().equals(transformClazz)) { oprTransformTask = (TransformTask) androidTask; break; } } } if (null == oprTransformTask) { throw new StopExecutionException( "TransformTask with transfrom type:" + transformClazz.getName() + " can not found!"); } transforms.add(injectTransform); //2Transform??,?typetype checkTransformConfig(oprTransformTask.getTransform(), injectTransform); String taskName = scope.getTaskName(getTaskNamePrefix(injectTransform)); try { IntermediateStream outputStream = getOutputStream(injectTransform, scope, taskName); // ?TransformTask TransformTaskParam transformTaskParam = getTransformParam(oprTransformTask); TransformTask.ConfigAction<T> configAction = new TransformTask.ConfigAction<T>(variantName, taskName, injectTransform, transformTaskParam.consumedInputStreams, transformTaskParam.referencedInputStreams, outputStream, ThreadRecorder.get(), null); TransformTask injectTransformTask = project.getTasks().create(configAction.getName(), configAction.getType()); oprTransformTask.dependsOn(injectTransformTask); for (TransformStream transformStream : transformTaskParam.consumedInputStreams) { if (null != transformStream.getDependencies()) { injectTransformTask.dependsOn(transformStream.getDependencies()); } } for (TransformStream transformStream : transformTaskParam.referencedInputStreams) { if (null != transformStream.getDependencies()) { injectTransformTask.dependsOn(transformStream.getDependencies()); } } if (transformTaskList.size() > 0) { injectTransformTask.dependsOn(transformTaskList.get(transformTaskList.size() - 1)); } transformTaskList.add(taskName); configAction.execute(injectTransformTask); //oprTransformTask if (injectTransform.updateNextTransformInput()) { Collection<TransformStream> newInputStream = Lists.newArrayList(); newInputStream.add(outputStream); updateTransformTaskConfig(oprTransformTask, newInputStream, transformTaskParam.referencedInputStreams, transformTaskParam.outputStream); } return injectTransformTask; } catch (IllegalAccessException e) { throw new StopExecutionException(e.getMessage()); } } /** * ?outputStream * * @param injectTransform * @param scope * @param taskName * @param <T> * @return */ @NotNull private <T extends Transform> IntermediateStream getOutputStream(T injectTransform, @NonNull VariantScope scope, String taskName) { File outRootFolder = FileUtils.join(project.getBuildDir(), StringHelper.toStrings(AndroidProject.FD_INTERMEDIATES, FD_TRANSFORMS, injectTransform.getName(), scope.getDirectorySegments())); Set<? super Scope> requestedScopes = injectTransform.getScopes(); // create the output return IntermediateStream.builder().addContentTypes(injectTransform.getOutputTypes()) .addScopes(requestedScopes).setRootLocation(outRootFolder).setDependency(taskName).build(); } /** * ?TransformTask * * @return */ private SortedMap<String, TransformTask> getTransformTasks() { TaskCollection<TransformTask> transformTasks = project.getTasks().withType(TransformTask.class); return transformTasks.getAsMap(); } /** * transformTask? * * @param transformTask * @param consumedInputStreams * @param referencedInputStreams * @param outputStream */ private void updateTransformTaskConfig(TransformTask transformTask, @NonNull Collection<TransformStream> consumedInputStreams, @NonNull Collection<TransformStream> referencedInputStreams, @Nullable IntermediateStream outputStream) throws IllegalAccessException { Field consumedInputStreamsField = FieldUtils.getDeclaredField(StreamBasedTask.class, "consumedInputStreams", true); Field referencedInputStreamsField = FieldUtils.getDeclaredField(StreamBasedTask.class, "referencedInputStreams", true); Field outputStreamField = FieldUtils.getDeclaredField(StreamBasedTask.class, "outputStream", true); if (null == consumedInputStreamsField || null == referencedInputStreamsField || null == outputStreamField) { throw new StopExecutionException( "The TransformTask does not has field with name: consumedInputStreams or referencedInputStreams or outputStream! Plugin version does not support!"); } consumedInputStreamsField.set(transformTask, consumedInputStreams); referencedInputStreamsField.set(transformTask, referencedInputStreams); outputStreamField.set(transformTask, outputStream); } /** * ?transformTask? * * @param transformTask * @return * @throws IllegalAccessException */ private TransformTaskParam getTransformParam(TransformTask transformTask) throws IllegalAccessException { TransformTaskParam transformTaskParam = new TransformTaskParam(); Field consumedInputStreamsField = FieldUtils.getDeclaredField(StreamBasedTask.class, "consumedInputStreams", true); Field referencedInputStreamsField = FieldUtils.getDeclaredField(StreamBasedTask.class, "referencedInputStreams", true); Field outputStreamField = FieldUtils.getDeclaredField(StreamBasedTask.class, "outputStream", true); if (null == consumedInputStreamsField || null == referencedInputStreamsField || null == outputStreamField) { throw new StopExecutionException( "The TransformTask does not has field with name: consumedInputStreams or referencedInputStreams or outputStream! Plugin version does not support!"); } transformTaskParam.consumedInputStreams = (Collection<TransformStream>) consumedInputStreamsField .get(transformTask); transformTaskParam.referencedInputStreams = (Collection<TransformStream>) referencedInputStreamsField .get(transformTask); transformTaskParam.outputStream = (IntermediateStream) outputStreamField.get(transformTask); return transformTaskParam; } /** * * * @param oprTransform * @param injectTransform */ private void checkTransformConfig(Transform oprTransform, Transform injectTransform) { assert (oprTransform.getInputTypes().equals(injectTransform.getOutputTypes())); } /** * TransformTask?? */ static class TransformTaskParam { Collection<TransformStream> consumedInputStreams; Collection<TransformStream> referencedInputStreams; IntermediateStream outputStream; } @NonNull private static String getTaskNamePrefix(@NonNull Transform transform) { StringBuilder sb = new StringBuilder(100); sb.append("transform"); Iterator<QualifiedContent.ContentType> iterator = transform.getInputTypes().iterator(); // there's always at least one sb.append(capitalize(iterator.next().name().toLowerCase(Locale.getDefault()))); while (iterator.hasNext()) { sb.append("And").append(capitalize(iterator.next().name().toLowerCase(Locale.getDefault()))); } sb.append("With").append(capitalize(transform.getName())).append("For"); return sb.toString(); } }