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
 * particular, this component can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
@Named
@Singleton

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.resolver.filter;

import org.apache.maven.artifact.Artifact;

/**
 * Filter to only retain objects in the given artifactScope or better.
 *
 */
abstract class AbstractScopeArtifactFilter implements ArtifactFilter {

    private boolean compileScope;

    private boolean runtimeScope;

import java.util.Locale;
import java.util.Map;
import java.util.Properties;

import org.apache.maven.utils.Os;

/**
 * Assists the project builder. <strong>Warning:</strong> This is an internal utility class that is only public for
 * technical reasons, it is not part of the public API. In particular, this class can be changed or deleted without
 * prior notice.
 *
 * @since 3.0
 */
public class EnvironmentUtils {

import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.eclipse.aether.graph.DependencyFilter;

/**
 * Caches project class realms. <strong>Warning:</strong> This is an internal utility interface that is only public for
 * technical reasons, it is not part of the public API. In particular, this interface can be changed or deleted without
 * prior notice.
 *
 */
public interface ProjectRealmCache {

    /**

            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

        // The exception stack trace is not really interesting here
        // but the message itself may be quite details and span multiple
        // lines with errors in it, so only display it at debug level.
        String msg = "The POM for {} is invalid, transitive dependencies (if any) will not be available: {}";
        if (logger.isDebugEnabled()) {

    /**
     * Default ctor for Plexus compatibility, as many plugins have artifact handlers declared in legacy Plexus XML.
     * Do not use directly!
     *
     * @deprecated This ctor is present only for Plexus XML defined component compatibility, do not use it.
     */
    @Deprecated
    public DefaultArtifactHandler() {
        this.type = null;
    }

    public DefaultArtifactHandler(final String type) {

       declaration is required.

   - [name] tells maven what the user-friendly name of this project is. The name
       element is similar to artifactId in that it is a unique descriptor for

        boolean isWindows = actualOsName.contains(FAMILY_WINDOWS);
        boolean is9x = false;
        boolean isNT = false;
        if (isWindows) {
            // there are only four 9x platforms that we look for
            is9x = (actualOsName.contains("95")
                    || actualOsName.contains("98")
                    || actualOsName.contains("me")

     */
    ArtifactFilter getArtifactFilter();

    /**
     * Returns a filter for only the core artifacts.
     *
     * @return the artifact filter
     */
    ArtifactFilter getCoreArtifactFilter();

    /**
     * Exclude an extension artifact (doesn't affect getArtifactFilter's result, only getExtensionArtifactFilter).
     *
     * @param artifactId an artifact id