com.metreeca.mark.tasks.Clean Maven / Gradle / Ivy

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A minimalist Maven plugin for static site generation

There is a newer version: 0.9.1

/*
 * Copyright © 2019-2020 Metreeca srl
 *
 * 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.metreeca.mark.tasks;

import com.metreeca.mark.*;

import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.stream.Stream;

import static java.util.Comparator.reverseOrder;

/**
 * Site cleaning task.
 *
 * Removes the {@linkplain Opts#target() target} site folder.
 */
public final class Clean implements Task {

	@Override public void exec(final Mark mark) {

		final Path target=mark.target();

		if ( Files.exists(target) ) { // clean target folder

			try ( final Stream walk=Files.walk(target) ) {

				walk.sorted(reverseOrder()).forEachOrdered(path -> {

					try {

						Files.delete(path);

					} catch ( final IOException e ) {
						throw new UncheckedIOException(e);
					}

				});

			} catch ( final IOException e ) {
				throw new UncheckedIOException(e);
			}

		}
	}

}