CheckstyleListener.java

/*
 * SPDX-FileCopyrightText: Copyright (c) 2011-2025 Yegor Bugayenko
 * SPDX-License-Identifier: MIT
 */
package com.qulice.checkstyle;

import com.jcabi.log.Logger;
import com.puppycrawl.tools.checkstyle.api.AuditEvent;
import com.puppycrawl.tools.checkstyle.api.AuditListener;
import com.qulice.spi.Environment;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

/**
 * Listener of Checkstyle events.
 *
 * @since 0.3
 * @checkstyle ClassDataAbstractionCoupling (260 lines)
 */
final class CheckstyleListener implements AuditListener {

    /**
     * Environment.
     */
    private final Environment env;

    /**
     * Collection of events collected.
     */
    private final List<AuditEvent> all;

    /**
     * Public ctor.
     * @param environ The environment
     */
    CheckstyleListener(final Environment environ) {
        this.all = new LinkedList<>();
        this.env = environ;
    }

    /**
     * Get all events.
     * @return List of events
     */
    public List<AuditEvent> events() {
        return Collections.unmodifiableList(this.all);
    }

    @Override
    public void auditStarted(final AuditEvent event) {
        // intentionally empty
    }

    @Override
    public void auditFinished(final AuditEvent event) {
        // intentionally empty
    }

    @Override
    public void fileStarted(final AuditEvent event) {
        // intentionally empty
    }

    @Override
    public void fileFinished(final AuditEvent event) {
        // intentionally empty
    }

    @Override
    public void addError(final AuditEvent event) {
        final String name = event.getFileName().substring(
            this.env.basedir().toString().length()
        );
        if (!this.env.exclude("checkstyle", name)) {
            this.all.add(event);
        }
    }

    @Override
    public void addException(final AuditEvent event,
        final Throwable throwable) {
        final String check = event.getSourceName();
        Logger.error(
            this,
            "%s[%d]: %s (%s), %[exception]s",
            event.getFileName().substring(
                this.env.basedir().toString().length()
            ),
            event.getLine(),
            event.getMessage(),
            check.substring(check.lastIndexOf('.') + 1),
            throwable
        );
    }

}