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

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/*
 * Copyright © 2019-2020 Metreeca srl. All rights reserved.
 */

package com.metreeca.mark.tasks;

import com.metreeca.mark.*;

import org.apache.maven.plugin.logging.Log;

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.lang.System.currentTimeMillis;
import static java.util.Comparator.reverseOrder;
import static java.util.function.Predicate.isEqual;

/**
 * Site building task.
 *
 * Generates a processed version of the {@linkplain Opts#source() source} site folder in the
 * {@linkplain Opts#target() target} site folder.
 */
public final class Build implements Task {

	@Override public void exec(final Mark mark) {

		final Path source=mark.source();
		final Path target=mark.target();
		final Path assets=mark.assets();

		final Log logger=mark.logger();

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

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

				walk.sorted(reverseOrder()).filter(isEqual(target).negate()).forEachOrdered(path -> {

					try {

						Files.delete(path);

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

				});

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

		}

		try ( final Stream walk=Files.walk(assets) ) { // process theme assets

			final long start=currentTimeMillis();
			final long count=walk.filter(mark::process).count();
			final long stop=currentTimeMillis();

			if ( count > 0 ) {
				logger.info(String.format("extracted %,d files in %,.3f s", count, (stop-start)/1000.0f));
			}

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

		try ( final Stream walk=Files.walk(source) ) { // process source folder

			final long start=currentTimeMillis();
			final long count=walk.filter(mark::process).count();
			final long stop=currentTimeMillis();

			if ( count > 0 ) {
				logger.info(String.format("processed %,d files in %,.3f s", count, (stop-start)/1000.0f));
			}

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

	}

}