name.remal.gradle_plugins.merge_resources.MergeResourcesPlugin Maven / Gradle / Ivy

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Remal Gradle plugins: merge-resources

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package name.remal.gradle_plugins.merge_resources;

import static java.lang.Boolean.FALSE;
import static java.util.Collections.emptyList;
import static name.remal.gradle_plugins.toolkit.ObjectUtils.doNotInline;
import static name.remal.gradle_plugins.toolkit.TaskUtils.doBeforeTaskExecution;

import java.io.File;
import java.util.ArrayList;
import lombok.val;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.tasks.AbstractCopyTask;

public abstract class MergeResourcesPlugin implements Plugin {

    public static final String MERGE_RESOURCES_EXTENSION_NAME = doNotInline("mergeResources");

    @Override
    public void apply(Project project) {
        val extension = project.getExtensions().create(MERGE_RESOURCES_EXTENSION_NAME, MergeResourcesExtension.class);
        project.getTasks().withType(AbstractCopyTask.class).configureEach(task ->
            configureCopyTask(task, extension)
        );
    }

    private static void configureCopyTask(AbstractCopyTask task, MergeResourcesExtension extension) {
        doBeforeTaskExecution(task, it ->
            beforeTaskExecution(it, extension)
        );
    }

    private static void beforeTaskExecution(AbstractCopyTask task, MergeResourcesExtension extension) {
        val mergedFilesDir = new File(task.getTemporaryDir().getAbsolutePath() + ".merged-files");
        task.from(mergedFilesDir);

        val mergers = new ArrayList();
        mergers.add(extension.getMetaInfServices());
        mergers.add(extension.getPackageInfo());
        mergers.add(extension.getSpringFactories());
        mergers.add(extension.getSpringImports());
        mergers.addAll(extension.getResourceMergers().getOrElse(emptyList()));

        mergers.removeIf(merger -> FALSE.equals(merger.getEnabled().getOrNull()));

        mergers.forEach(merger ->
            task.doFirst(
                merger.toString(),
                new CopyTaskActionMerge(mergedFilesDir, merger)
            )
        );

        task.doFirst("Create " + mergedFilesDir, new CopyTaskActionCreateMergedFilesDir(mergedFilesDir));
    }

}