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MavenPluginPlugin.java
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MavenPluginPlugin.java
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package io.freefair.gradle.plugins.maven.plugin;
import io.freefair.gradle.plugins.maven.MavenPublishJavaPlugin;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.plugins.JavaPlugin;
import org.gradle.api.plugins.JavaPluginConvention;
import org.gradle.api.publish.maven.tasks.GenerateMavenPom;
import org.gradle.api.tasks.SourceSet;
import org.gradle.api.tasks.TaskProvider;
import org.gradle.api.tasks.compile.JavaCompile;
import org.gradle.language.jvm.tasks.ProcessResources;
/**
* A Gradle plugin for building Maven plugins.
*
* @author Lars Grefer
*/
public class MavenPluginPlugin implements Plugin<Project> {
@Override
public void apply(Project project) {
project.getPlugins().apply(JavaPlugin.class);
MavenPublishJavaPlugin mavenPublishJavaPlugin = project.getPlugins().apply(MavenPublishJavaPlugin.class);
// https://github.com/gradle/gradle/issues/10555#issue-492150084
if (project.getGradle().getGradleVersion().startsWith("5.6")) {
mavenPublishJavaPlugin.getPublication().getPom().withXml(xmlProvider ->
xmlProvider.asNode().appendNode("packaging", "maven-plugin")
);
}
else {
mavenPublishJavaPlugin.getPublication().getPom().setPackaging("maven-plugin");
}
TaskProvider<GenerateMavenPom> generateMavenPom = project.getTasks().named("generatePomFileForMavenJavaPublication", GenerateMavenPom.class);
TaskProvider<DescriptorGeneratorTask> descriptorGeneratorTaskProvider = project.getTasks().register("generateMavenPluginDescriptor", DescriptorGeneratorTask.class, generateMavenPluginDescriptor -> {
generateMavenPluginDescriptor.dependsOn(generateMavenPom);
generateMavenPluginDescriptor.getPomFile().set(generateMavenPom.get().getDestination());
generateMavenPluginDescriptor.getOutputDirectory().set(
project.getLayout().getBuildDirectory().dir("maven-plugin")
);
SourceSet main = project.getConvention().getPlugin(JavaPluginConvention.class).getSourceSets().getByName("main");
generateMavenPluginDescriptor.getSourceDirectories().from(main.getAllJava().getSourceDirectories());
JavaCompile javaCompile = (JavaCompile) project.getTasks().getByName(main.getCompileJavaTaskName());
generateMavenPluginDescriptor.getClassesDirectories().from(javaCompile);
generateMavenPluginDescriptor.getEncoding().convention(javaCompile.getOptions().getEncoding());
});
project.getTasks().named(JavaPlugin.PROCESS_RESOURCES_TASK_NAME, ProcessResources.class)
.configure(processResources -> processResources.from(descriptorGeneratorTaskProvider));
}
}