com.metreeca.mark.pipes.None 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.pipes;

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.Optional;
import java.util.stream.Stream;

import static com.metreeca.mark.Mark.basename;


public final class None implements Pipe {

	public None(final Mark mark) {

		if ( mark == null ) {
			throw new NullPointerException("null mark");
		}

	}


	////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

	@Override public Optional process(final Path source) {
		return Optional.of(source)
				.filter(path -> !Files.exists(path))
				.map(path -> new Page(path, target -> {
					try ( final Stream files=Files.walk(target.getParent()) ) {

						files.filter(file -> basename(path).equals(basename(file))).forEach(file -> {
							try {

								Files.delete(file);

							} catch ( final IOException e ) {

								throw new UncheckedIOException(e);

							}
						});

					} catch ( final IOException e ) {

						throw new UncheckedIOException(e);

					}
				}));
	}

}