| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * 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 androidx.build |
| |
| import com.android.build.gradle.LibraryExtension |
| import org.gradle.api.DefaultTask |
| import org.gradle.api.Project |
| import org.gradle.api.tasks.Input |
| import org.gradle.api.tasks.OutputFile |
| import org.gradle.api.tasks.TaskAction |
| import java.io.File |
| import java.io.PrintWriter |
| |
| /** |
| * Task that allows to write a version to a given output file. |
| */ |
| open class VersionFileWriterTask : DefaultTask() { |
| @get:Input |
| lateinit var version: String |
| @get:OutputFile |
| lateinit var outputFile: File |
| |
| /** |
| * The main method for actually writing out the file. |
| */ |
| @TaskAction |
| fun run() { |
| val writer = PrintWriter(outputFile) |
| writer.println(version) |
| writer.close() |
| } |
| } |
| |
| private const val RESOURCE_DIRECTORY = "generatedResources" |
| private const val VERSION_FILE_PATH = "$RESOURCE_DIRECTORY/META-INF/%s_%s.version" |
| |
| /** |
| * Sets up Android Library project to have a task that generates a version file. |
| * It must be called after [LibraryExtension] has been resolved. |
| * |
| * @receiver an Android Library project. |
| */ |
| fun Project.configureVersionFileWriter( |
| library: LibraryExtension, |
| androidXExtension: AndroidXExtension |
| ) { |
| val writeVersionFile = tasks.register( |
| "writeVersionFile", |
| VersionFileWriterTask::class.java |
| ) |
| |
| afterEvaluate { |
| writeVersionFile.configure { |
| val group = properties["group"] as String |
| val artifactId = properties["name"] as String |
| val version = if (androidXExtension.publish.shouldPublish()) { |
| version().toString() |
| } else { |
| "0.0.0" |
| } |
| |
| // Add a java resource file to the library jar for version tracking purposes. |
| val artifactName = File( |
| buildDir, |
| String.format(VERSION_FILE_PATH, group, artifactId) |
| ) |
| |
| it.version = version |
| it.outputFile = artifactName |
| |
| // We only add version file if is a library that is publishing. |
| it.enabled = androidXExtension.publish.shouldPublish() |
| } |
| } |
| |
| library.libraryVariants.all { variant -> |
| variant.processJavaResourcesProvider.configure { |
| it.dependsOn(writeVersionFile) |
| } |
| } |
| |
| val resources = library.sourceSets.getByName("main").resources |
| resources.srcDirs(setOf(resources.srcDirs, File(buildDir, RESOURCE_DIRECTORY))) |
| val includes = resources.includes |
| includes.add("META-INF/*.version") |
| resources.setIncludes(includes) |
| } |
