import org.apache.maven.api.services.model.ProfileActivator;

/**
 * Determines profile activation based on the existence or value of some execution property.
 *
 * @see ActivationProperty
 */
@Named("property")
@Singleton
public class PropertyProfileActivator implements ProfileActivator {

    @Override
    public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {

    private static final Pattern FILTER_3 = Pattern.compile("\\."); // used for split now

    @Override
    public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
        Activation activation = profile.getActivation();

        if (activation == null) {
            return false;
        }

        String jdk = activation.getJdk();

/**
 * Determines profile activation based on the operating system of the current runtime platform.
 *
 * @see ActivationOS
 */
@Named("os")
@Singleton
public class OperatingSystemProfileActivator implements ProfileActivator {

    private static final String REGEX_PREFIX = "regex:";

    @Override

    /**
     * Add a {@link org.apache.maven.model.Profile} that has come from an external source. This may be from a custom
     * configuration like the MavenCLI settings.xml file, or from a custom dialog in an IDE integration like M2Eclipse.
     *
     * @param profile
     */
    void addProfile(Profile profile);

    void setProfiles(List<Profile> profiles);

    List<Profile> getProfiles();

    /**

     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @return The execution properties, never {@code null}.
     */
    Map<String, String> getSystemProperties();

    /**
     * Gets the user properties to use for interpolation and profile activation. The user properties have been

import java.util.concurrent.atomic.AtomicReference;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.LegacySupport;
import org.eclipse.aether.RepositorySystemSession;

/**
 * Helps to provide backward-compatibility with plugins that use legacy components. <strong>Warning:</strong> This is an
 * internal utility component that is only public for technical reasons, it is not part of the public API. In

            List<ArtifactRepository> remoteRepositories,
            ArtifactRepository localRepository,
            boolean allowStubModel)
            throws ProjectBuildingException;

    // TODO this is only to provide a project for plugins that don't need a project to execute but need some
    // of the values from a MavenProject. Ideally this should be something internal and nothing outside Maven

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl.model.profile;

import java.util.Locale;
import java.util.stream.Stream;

/**
 * OS support
 */
public class Os {

    /**
     * The OS Name.
     */

                problems.messages.get(0),
                "'profiles.profile.id' must be unique but found duplicate profile with id test");
    }

    @Test
    void testValidateUniqueRepositoryId() throws Exception {
        Settings settings = new Settings();
        Profile profile = new Profile();
        profile.setId("pro");
        settings.addProfile(profile);
        Repository repo1 = new Repository();

    @Test
    void testShouldActivateDefaultProfile() throws Exception {
        Profile notActivated = new Profile();
        notActivated.setId("notActivated");

        Activation nonActivation = new Activation();

        nonActivation.setJdk("19.2");

        notActivated.setActivation(nonActivation);

        Profile defaultActivated = new Profile();
        defaultActivated.setId("defaultActivated");