org.eolang.maven.UnspileMojo Maven / Gradle / Ivy

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EO-to-Java Maven Plugin
There is a newer version: 0.49.2
/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016-2022 Yegor Bugayenko
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.eolang.maven;

import com.jcabi.log.Logger;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.util.Set;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.cactoos.set.SetOf;

/**
 * Goes through all .class files and deletes those that
 * were created from autogenerated sources.
 *
 * @since 0.1
 * @checkstyle ClassDataAbstractionCouplingCheck (500 lines)
 */
@Mojo(
    name = "unspile",
    defaultPhase = LifecyclePhase.PREPARE_PACKAGE,
    threadSafe = true
)
@SuppressWarnings("PMD.ImmutableField")
public final class UnspileMojo extends SafeMojo {

    /**
     * Directory with Java classes.
     * @checkstyle MemberNameCheck (7 lines)
     */
    @Parameter(
        property = "eo.classesDir",
        required = true,
        defaultValue = "${project.build.directory}/classes"
    )
    private File classesDir;

    /**
     * Directory with generated sources.
     * @checkstyle MemberNameCheck (7 lines)
     */
    @Parameter(
        property = "eo.generatedDir",
        required = true,
        defaultValue = "${project.build.directory}/generated-sources"
    )
    private File generatedDir;

    /**
     * List of inclusion GLOB filters for finding .class files.
     */
    @Parameter(property = "eo.includes")
    private Set includes;

    @Override
    public void exec() throws IOException {
        if (this.includes == null) {
            this.includes = new SetOf<>("**/*.class");
        }
        new Walk(this.classesDir.toPath()).stream()
            .filter(
                file -> this.includes.stream().anyMatch(
                    glob -> UnspileMojo.matcher(glob).matches(file)
                )
            )
            .forEach(this::delete);
    }

    /**
     * Create glob matcher from text.
     * @param text The pattern
     * @return Matcher
     */
    private static PathMatcher matcher(final String text) {
        return FileSystems.getDefault()
            .getPathMatcher(String.format("glob:%s", text));
    }

    /**
     * Delete .class file if .java file is present.
     * @param file EO file
     */
    private void delete(final Path file) {
        final String name = file.toString().substring(
            this.classesDir.toString().length() + 1
        );
        final Path java = this.generatedDir.toPath().resolve(
            name.replaceAll("\\.class$", ".java")
        );
        if (Files.exists(java)) {
            try {
                Files.delete(file);
            } catch (final IOException ex) {
                throw new IllegalStateException(ex);
            }
            Logger.info(
                this, "Deleted %s since %s is present",
                Save.rel(file), Save.rel(java)
            );
        }
    }

}