io.earcam.utilitarian.site.search.offline.RegexFilter Maven / Gradle / Ivy

/*-
 * #%L
 * io.earcam.utilitarian.site.search.offline
 * %%
 * Copyright (C) 2017 earcam
 * %%
 * SPDX-License-Identifier: (BSD-3-Clause OR EPL-1.0 OR Apache-2.0 OR MIT)
 *
 * You must choose to accept, in full - any individual or combination of
 * the following licenses:
 * 
 * 	BSD-3-Clause
 * 	EPL-1.0
 * 	Apache-2.0
 * 	MIT
 * 
 * #L%
 */
package io.earcam.utilitarian.site.search.offline;

import static io.earcam.utilitarian.site.search.offline.Component.mandatory;
import static java.util.regex.Pattern.compile;

import java.util.Map;
import java.util.function.Predicate;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class RegexFilter implements Filter {

	private static final Logger LOG = LoggerFactory.getLogger(RegexFilter.class);

	public static final String INCLUDE = "include";
	public static final String EXCLUDE = "exclude";

	public final String id = id();
	private Predicate predicate;


	@Override
	public void configure(Map configuration)
	{
		String include = mandatory(configuration, INCLUDE);
		String exclude = mandatory(configuration, EXCLUDE);

		predicate = compile(include).asPredicate().and(compile(exclude).asPredicate().negate());
		LOG.debug("{} include pattern: {}", id, include);
		LOG.debug("{} exclude pattern: {}", id, exclude);
	}


	@Override
	public boolean test(Document document)
	{
		String path = document.file().toAbsolutePath().toString();
		boolean include = predicate.test(path);
		LOG.debug("{} {}cluding {}", id, include ? "in" : "ex", path);
		return include;
	}
}