if ( repo.length() > 1 && repo.startsWith( "!" ) )
                {
                    if ( repo.substring( 1 ).equals( originalId ) )
                    {
                        // explicitly exclude. Set result and stop processing.
                        result = false;
                        break;
                    }
                }
                // check for exact match
                else if ( repo.equals( originalId ) )
                {
                    result = true;
                    break;
                }
                // check for external:*
                else if ( EXTERNAL_WILDCARD.equals( repo ) && isExternalRepo( originalRepository ) )
                {
                    result = true;
                    // don't stop processing in case a future segment explicitly excludes this repo
                }
                // check for external:http:*
                else if ( EXTERNAL_HTTP_WILDCARD.equals( repo ) && isExternalHttpRepo( originalRepository ) )
                {
                    result = true;
                    // don't stop processing in case a future segment explicitly excludes this repo
                }
                else if ( WILDCARD.equals( repo ) )
                {
                    result = true;
                    // don't stop processing in case a future segment explicitly excludes this repo
                }
            }
        }
        return result;
    }

    /**
     * Checks the URL to see if this repository refers to an external repository
     *
     * @param originalRepository
     * @return true if external.
     */
    static boolean isExternalRepo( ArtifactRepository originalRepository )
    {
        try
        {
            URL url = new URL( originalRepository.getUrl() );
            return !( isLocal( url.getHost() ) || url.getProtocol().equals( "file" ) );
        }
        catch ( MalformedURLException e )
        {
            // bad url just skip it here. It should have been validated already, but the wagon lookup will deal with it
            return false;
        }
    }

    private static boolean isLocal( String host )
    {
        return "localhost".equals( host ) || "127.0.0.1".equals( host );
    }

    /**
     * Checks the URL to see if this repository refers to a non-localhost repository using HTTP.
     *
     * @param originalRepository
     * @return true if external.
     */
    static boolean isExternalHttpRepo( ArtifactRepository originalRepository )
    {
        try
        {
            URL url = new URL( originalRepository.getUrl() );
            return ( "http".equalsIgnoreCase( url.getProtocol() ) || "dav".equalsIgnoreCase( url.getProtocol() )
                || "dav:http".equalsIgnoreCase( url.getProtocol() )
                || "dav+http".equalsIgnoreCase( url.getProtocol() ) ) && !isLocal( url.getHost() );
        }
        catch ( MalformedURLException e )
        {
            // bad url just skip it here. It should have been validated already, but the wagon lookup will deal with it
            return false;
        }
    }

   static boolean matchesLayout( ArtifactRepository repository, Mirror mirror )
    {
        return matchesLayout( RepositoryUtils.getLayout( repository ), mirror.getMirrorOfLayouts() );
    }

    /**
     * Checks whether the layouts configured for a mirror match with the layout of the repository.
     *
     * @param repoLayout The layout of the repository, may be {@code null}.
     * @param mirrorLayout The layouts supported by the mirror, may be {@code null}.
     * @return {@code true} if the layouts associated with the mirror match the layout of the original repository,
     *         {@code false} otherwise.
     */
    static boolean matchesLayout( String repoLayout, String mirrorLayout )
    {
        boolean result = false;

        // simple checks first to short circuit processing below.
        if ( StringUtils.isEmpty( mirrorLayout ) || WILDCARD.equals( mirrorLayout ) )
        {
            result = true;
        }
        else if ( mirrorLayout.equals( repoLayout ) )
        {
            result = true;
        }
        else
        {
            // process the list
            String[] layouts = mirrorLayout.split( "," );
            for ( String layout : layouts )
            {
                // see if this is a negative match
                if ( layout.length() > 1 && layout.startsWith( "!" ) )
                {
                    if ( layout.substring( 1 ).equals( repoLayout ) )
                    {
                        // explicitly exclude. Set result and stop processing.
                        result = false;
                        break;
                    }
                }
                // check for exact match
                else if ( layout.equals( repoLayout ) )
                {
                    result = true;
                    break;
                }
                else if ( WILDCARD.equals( layout ) )
                {
                    result = true;
                    // don't stop processing in case a future segment explicitly excludes this repo
                }
            }
        }

        return result;
    }

}

public boolean visitEnter( DependencyNode node )
        {
            StringBuilder buffer = new StringBuilder( 128 );
            buffer.append( indent );
            org.eclipse.aether.graph.Dependency dep = node.getDependency();
            if ( dep != null )
            {
                org.eclipse.aether.artifact.Artifact art = dep.getArtifact();

                buffer.append( art );
                if ( StringUtils.isNotEmpty( dep.getScope() ) )
                {
                    buffer.append( ':' ).append( dep.getScope() );
                }

                if ( dep.isOptional() )
                {
                    buffer.append( " (optional)" );
                }

                // TODO We currently cannot tell which <dependencyManagement> section contained the management
                //      information. When the resolver provides this information, these log messages should be updated
                //      to contain it.
                if ( ( node.getManagedBits() & DependencyNode.MANAGED_SCOPE ) == DependencyNode.MANAGED_SCOPE )
                {
                    final String premanagedScope = DependencyManagerUtils.getPremanagedScope( node );
                    buffer.append( " (scope managed from " );
                    buffer.append( Objects.toString( premanagedScope, "default" ) );
                    buffer.append( ')' );
                }

                if ( ( node.getManagedBits() & DependencyNode.MANAGED_VERSION ) == DependencyNode.MANAGED_VERSION )
                {
                    final String premanagedVersion = DependencyManagerUtils.getPremanagedVersion( node );
                    buffer.append( " (version managed from " );
                    buffer.append( Objects.toString( premanagedVersion, "default" ) );
                    buffer.append( ')' );
                }

                if ( ( node.getManagedBits() & DependencyNode.MANAGED_OPTIONAL ) == DependencyNode.MANAGED_OPTIONAL )
                {
                    final Boolean premanagedOptional = DependencyManagerUtils.getPremanagedOptional( node );
                    buffer.append( " (optionality managed from " );
                    buffer.append( Objects.toString( premanagedOptional, "default" ) );
                    buffer.append( ')' );
                }

                if ( ( node.getManagedBits() & DependencyNode.MANAGED_EXCLUSIONS )
                         == DependencyNode.MANAGED_EXCLUSIONS )
                {
                    final Collection<org.eclipse.aether.graph.Exclusion> premanagedExclusions =
                        DependencyManagerUtils.getPremanagedExclusions( node );

                    buffer.append( " (exclusions managed from " );
                    buffer.append( Objects.toString( premanagedExclusions, "default" ) );
                    buffer.append( ')' );
                }

                if ( ( node.getManagedBits() & DependencyNode.MANAGED_PROPERTIES )
                         == DependencyNode.MANAGED_PROPERTIES )
                {
                    final Map<String, String> premanagedProperties =
                        DependencyManagerUtils.getPremanagedProperties( node );

                    buffer.append( " (properties managed from " );
                    buffer.append( Objects.toString( premanagedProperties, "default" ) );
                    buffer.append( ')' );
                }
            }

}

//    public void addProxy( String protocol, String host, int port, String username, String password,
//                          String nonProxyHosts )
//    {
//        ProxyInfo proxyInfo = new ProxyInfo();
//        proxyInfo.setHost( host );
//        proxyInfo.setType( protocol );
//        proxyInfo.setPort( port );
//        proxyInfo.setNonProxyHosts( nonProxyHosts );
//        proxyInfo.setUserName( username );
//        proxyInfo.setPassword( password );
//
//        proxies.put( protocol, proxyInfo );
//
//        wagonManager.addProxy( protocol, host, port, username, password, nonProxyHosts );
//    }

    public List<ArtifactRepository> getEffectiveRepositories( List<ArtifactRepository> repositories )
    {
        if ( repositories == null )
        {
            return null;
        }

        Map<String, List<ArtifactRepository>> reposByKey = new LinkedHashMap<>();

        for ( ArtifactRepository repository : repositories )
        {
            String key = repository.getId();

            List<ArtifactRepository> aliasedRepos = reposByKey.get( key );

            if ( aliasedRepos == null )
            {
                aliasedRepos = new ArrayList<>();
                reposByKey.put( key, aliasedRepos );
            }

            aliasedRepos.add( repository );
        }

        List<ArtifactRepository> effectiveRepositories = new ArrayList<>();

        for ( List<ArtifactRepository> aliasedRepos : reposByKey.values() )
        {
            List<ArtifactRepository> mirroredRepos = new ArrayList<>();

            List<ArtifactRepositoryPolicy> releasePolicies =
                new ArrayList<>( aliasedRepos.size() );

            for ( ArtifactRepository aliasedRepo : aliasedRepos )
            {
                releasePolicies.add( aliasedRepo.getReleases() );
                mirroredRepos.addAll( aliasedRepo.getMirroredRepositories() );
            }

            ArtifactRepositoryPolicy releasePolicy = getEffectivePolicy( releasePolicies );

            List<ArtifactRepositoryPolicy> snapshotPolicies =
                new ArrayList<>( aliasedRepos.size() );

            for ( ArtifactRepository aliasedRepo : aliasedRepos )
            {
                snapshotPolicies.add( aliasedRepo.getSnapshots() );
            }

            ArtifactRepositoryPolicy snapshotPolicy = getEffectivePolicy( snapshotPolicies );

            ArtifactRepository aliasedRepo = aliasedRepos.get( 0 );

            ArtifactRepository effectiveRepository =
                createArtifactRepository( aliasedRepo.getId(), aliasedRepo.getUrl(), aliasedRepo.getLayout(),
                                          snapshotPolicy, releasePolicy );

            effectiveRepository.setAuthentication( aliasedRepo.getAuthentication() );

            effectiveRepository.setProxy( aliasedRepo.getProxy() );

            effectiveRepository.setMirroredRepositories( mirroredRepos );

            effectiveRepository.setBlocked( aliasedRepo.isBlocked() );

            effectiveRepositories.add( effectiveRepository );
        }

        return effectiveRepositories;
    }

    private ArtifactRepositoryPolicy getEffectivePolicy( Collection<ArtifactRepositoryPolicy> policies )
    {
        ArtifactRepositoryPolicy effectivePolicy = null;

        for ( ArtifactRepositoryPolicy policy : policies )
        {
            if ( effectivePolicy == null )
            {
                effectivePolicy = new ArtifactRepositoryPolicy( policy );
            }
            else
            {
                effectivePolicy.merge( policy );
            }
        }

        return effectivePolicy;
    }

    public Mirror getMirror( ArtifactRepository repository, List<Mirror> mirrors )

return mirrorSelector.getMirror( repository, mirrors );
    }

    public void injectMirror( List<ArtifactRepository> repositories, List<Mirror> mirrors )
    {
        if ( repositories != null && mirrors != null )
        {
            for ( ArtifactRepository repository : repositories )
            {
                Mirror mirror = getMirror( repository, mirrors );
                injectMirror( repository, mirror );
            }
        }
    }

    private Mirror getMirror( RepositorySystemSession session, ArtifactRepository repository )
    {
        if ( session != null )
        {
            org.eclipse.aether.repository.MirrorSelector selector = session.getMirrorSelector();
            if ( selector != null )
            {
                RemoteRepository repo = selector.getMirror( RepositoryUtils.toRepo( repository ) );
                if ( repo != null )
                {
                    Mirror mirror = new Mirror();
                    mirror.setId( repo.getId() );
                    mirror.setUrl( repo.getUrl() );
                    mirror.setLayout( repo.getContentType() );
                    mirror.setBlocked( repo.isBlocked() );
                    return mirror;
                }
            }
        }
        return null;
    }

    public void injectMirror( RepositorySystemSession session, List<ArtifactRepository> repositories )
    {
        if ( repositories != null && session != null )
        {
            for ( ArtifactRepository repository : repositories )
            {
                Mirror mirror = getMirror( session, repository );
                injectMirror( repository, mirror );
            }
        }
    }

    private void injectMirror( ArtifactRepository repository, Mirror mirror )
    {
        if ( mirror != null )
        {
            ArtifactRepository original =
                createArtifactRepository( repository.getId(), repository.getUrl(), repository.getLayout(),
                                          repository.getSnapshots(), repository.getReleases() );

            repository.setMirroredRepositories( Collections.singletonList( original ) );

            repository.setId( mirror.getId() );
            repository.setUrl( mirror.getUrl() );

            if ( StringUtils.isNotEmpty( mirror.getLayout() ) )
            {
                repository.setLayout( getLayout( mirror.getLayout() ) );
            }

            repository.setBlocked( mirror.isBlocked() );
        }
    }

}

    public <T> void seed( Class<T> clazz, Provider<T> value )
    {
        getScopeState().seeded.put( Key.get( clazz ), value );
    }

    public <T> void seed( Class<T> clazz, final T value )
    {
        getScopeState().seeded.put( Key.get( clazz ), Providers.of( value ) );
    }

    public <T> Provider<T> scope( final Key<T> key, final Provider<T> unscoped )
    {
        return new Provider<T>()
        {
            @SuppressWarnings( "unchecked" )
            public T get()
            {
                LinkedList<ScopeState> stack = values.get();
                if ( stack == null || stack.isEmpty() )
                {
                    throw new OutOfScopeException( "Cannot access " + key + " outside of a scoping block" );
                }

                ScopeState state = stack.getFirst();

                Provider<?> seeded = state.seeded.get( key );

                if ( seeded != null )
                {
                    return (T) seeded.get();
                }

                T provided = (T) state.provided.get( key );
                if ( provided == null && unscoped != null )
                {
                    provided = unscoped.get();
                    state.provided.put( key, provided );
                }

                return provided;
            }
        };
    }

    @SuppressWarnings( { "unchecked" } )
    public static <T> Provider<T> seededKeyProvider()
    {
        return (Provider<T>) SEEDED_KEY_PROVIDER;
    }

final VersionRangeResult versionRangeResult = resolver.resolveVersionRange( session, versionRangeRequest );

            if ( versionRangeResult.getHighestVersion() == null )
            {
                throw new UnresolvableModelException(
                    String.format( "No versions matched the requested parent version range '%s'",
                                   parent.getVersion() ),
                    parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );

            }

            if ( versionRangeResult.getVersionConstraint() != null
                     && versionRangeResult.getVersionConstraint().getRange() != null
                     && versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null )
            {
                // Message below is checked for in the MNG-2199 core IT.
                throw new UnresolvableModelException(
                    String.format( "The requested parent version range '%s' does not specify an upper bound",
                                   parent.getVersion() ),
                    parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );

            }

            parent.setVersion( versionRangeResult.getHighestVersion().toString() );

            return resolveModel( parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
        }
        catch ( final VersionRangeResolutionException e )
        {
            throw new UnresolvableModelException( e.getMessage(), parent.getGroupId(), parent.getArtifactId(),
                                                  parent.getVersion(), e );

        }
    }

    @Override
    public ModelSource resolveModel( final Dependency dependency )
        throws UnresolvableModelException
    {
        try
        {
            final Artifact artifact = new DefaultArtifact( dependency.getGroupId(), dependency.getArtifactId(), "",
                                                           "pom", dependency.getVersion() );

            final VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
            versionRangeRequest.setTrace( trace );

            final VersionRangeResult versionRangeResult = resolver.resolveVersionRange( session, versionRangeRequest );

}
        }
    }

    private Proxy getProxy( RepositorySystemSession session, ArtifactRepository repository )
    {
        if ( session != null )
        {
            ProxySelector selector = session.getProxySelector();
            if ( selector != null )
            {
                RemoteRepository repo = RepositoryUtils.toRepo( repository );
                org.eclipse.aether.repository.Proxy proxy = selector.getProxy( repo );
                if ( proxy != null )
                {
                    Proxy p = new Proxy();
                    p.setHost( proxy.getHost() );
                    p.setProtocol( proxy.getType() );
                    p.setPort( proxy.getPort() );
                    if ( proxy.getAuthentication() != null )
                    {
                        repo = new RemoteRepository.Builder( repo ).setProxy( proxy ).build();
                        AuthenticationContext authCtx = AuthenticationContext.forProxy( session, repo );
                        p.setUserName( authCtx.get( AuthenticationContext.USERNAME ) );
                        p.setPassword( authCtx.get( AuthenticationContext.PASSWORD ) );
                        p.setNtlmDomain( authCtx.get( AuthenticationContext.NTLM_DOMAIN ) );
                        p.setNtlmHost( authCtx.get( AuthenticationContext.NTLM_WORKSTATION ) );
                        authCtx.close();
                    }
                    return p;
                }
            }
        }
        return null;
    }

    public void injectProxy( RepositorySystemSession session, List<ArtifactRepository> repositories )
    {
        if ( repositories != null && session != null )
        {
            for ( ArtifactRepository repository : repositories )
            {
                repository.setProxy( getProxy( session, repository ) );
            }
        }
    }

public MavenExecutionRequest populateFromSettings( MavenExecutionRequest request, Settings settings )
        throws MavenExecutionRequestPopulationException
    {
        if ( settings == null )
        {
            return request;
        }

        request.setOffline( settings.isOffline() );

        request.setInteractiveMode( settings.isInteractiveMode() );

        request.setPluginGroups( settings.getPluginGroups() );

        request.setLocalRepositoryPath( settings.getLocalRepository() );

        for ( Server server : settings.getServers() )
        {
            server = server.clone();

            request.addServer( server );
        }

        //  <proxies>
        //    <proxy>
        //      <active>true</active>
        //      <protocol>http</protocol>
        //      <host>proxy.somewhere.com</host>
        //      <port>8080</port>
        //      <username>proxyuser</username>
        //      <password>somepassword</password>
        //      <nonProxyHosts>www.google.com|*.somewhere.com</nonProxyHosts>
        //    </proxy>
        //  </proxies>

        for ( Proxy proxy : settings.getProxies() )
        {
            if ( !proxy.isActive() )
            {
                continue;
            }

            proxy = proxy.clone();

            request.addProxy( proxy );
        }

        // <mirrors>
        //   <mirror>
        //     <id>nexus</id>
        //     <mirrorOf>*</mirrorOf>
        //     <url>http://repository.sonatype.org/content/groups/public</url>
        //   </mirror>
        // </mirrors>

        for ( Mirror mirror : settings.getMirrors() )
        {
            mirror = mirror.clone();

            request.addMirror( mirror );
        }

        request.setActiveProfiles( settings.getActiveProfiles() );

        for ( org.apache.maven.settings.Profile rawProfile : settings.getProfiles() )
        {
            request.addProfile( SettingsUtils.convertFromSettingsProfile( rawProfile ) );

            if ( settings.getActiveProfiles().contains( rawProfile.getId() ) )
            {
                List<Repository> remoteRepositories = rawProfile.getRepositories();
                for ( Repository remoteRepository : remoteRepositories )
                {
                    try
                    {
                        request.addRemoteRepository( repositorySystem.buildArtifactRepository( remoteRepository ) );

+ resource.getRepositoryUrl() + resource.getResourceName() );
    }

    @Override
    public void transferSucceeded( TransferEvent event )
    {
        String action = ( event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploaded" : "Downloaded" );
        String direction = event.getRequestType() == TransferEvent.RequestType.PUT ? "to" : "from";

        TransferResource resource = event.getResource();
        long contentLength = event.getTransferredBytes();
        FileSizeFormat format = new FileSizeFormat( Locale.ENGLISH );

        StringBuilder message = new StringBuilder();
        message.append( action ).append( ' ' ).append( direction ).append( ' ' ).append( resource.getRepositoryId() );
        message.append( ": " );
        message.append( resource.getRepositoryUrl() ).append( resource.getResourceName() );
        message.append( " (" ).append( format.format( contentLength ) );

        long duration = System.currentTimeMillis() - resource.getTransferStartTime();
        if ( duration > 0L )
        {
            double bytesPerSecond = contentLength / ( duration / 1000.0 );
            message.append( " at " ).append( format.format( (long) bytesPerSecond ) ).append( "/s" );
        }

        message.append( ')' );
        out.println( message.toString() );

}
    }

    private Authentication getAuthentication( RepositorySystemSession session, ArtifactRepository repository )
    {
        if ( session != null )
        {
            AuthenticationSelector selector = session.getAuthenticationSelector();
            if ( selector != null )
            {
                RemoteRepository repo = RepositoryUtils.toRepo( repository );
                org.eclipse.aether.repository.Authentication auth = selector.getAuthentication( repo );
                if ( auth != null )
                {
                    repo = new RemoteRepository.Builder( repo ).setAuthentication( auth ).build();
                    AuthenticationContext authCtx = AuthenticationContext.forRepository( session, repo );
                    Authentication result =
                        new Authentication( authCtx.get( AuthenticationContext.USERNAME ),
                                            authCtx.get( AuthenticationContext.PASSWORD ) );
                    result.setPrivateKey( authCtx.get( AuthenticationContext.PRIVATE_KEY_PATH ) );
                    result.setPassphrase( authCtx.get( AuthenticationContext.PRIVATE_KEY_PASSPHRASE ) );
                    authCtx.close();
                    return result;
                }
            }
        }
        return null;
    }

    public void injectAuthentication( RepositorySystemSession session, List<ArtifactRepository> repositories )
    {
        if ( repositories != null && session != null )
        {
            for ( ArtifactRepository repository : repositories )
            {
                repository.setAuthentication( getAuthentication( session, repository ) );
            }
        }
    }

    private org.apache.maven.settings.Proxy getProxy( ArtifactRepository repository,

}

    private InnerInterpolator createInterpolator( List<? extends ValueSource> valueSources,
                                                  List<? extends InterpolationPostProcessor> postProcessors,
                                                  final ModelProblemCollector problems )
    {
        final Map<String, String> cache = new HashMap<>();
        final StringSearchInterpolator interpolator = new StringSearchInterpolator();
        interpolator.setCacheAnswers( true );
        for ( ValueSource vs : valueSources )
        {
            interpolator.addValueSource( vs );
        }
        for ( InterpolationPostProcessor postProcessor : postProcessors )
        {
            interpolator.addPostProcessor( postProcessor );
        }
        final RecursionInterceptor recursionInterceptor = createRecursionInterceptor();
        return new InnerInterpolator()
        {
            @Override
            public String interpolate( String value )
            {
                if ( value != null && value.contains( "${" ) )
                {
                    String c = cache.get( value );
                    if ( c == null )
                    {
                        try
                        {
                            c = interpolator.interpolate( value, recursionInterceptor );
                        }
                        catch ( InterpolationException e )
                        {
                            problems.add( new ModelProblemCollectorRequest( Severity.ERROR, Version.BASE )
                                    .setMessage( e.getMessage() ).setException( e ) );
                        }
                        cache.put( value, c );
                    }
                    return c;
                }
                return value;
            }
        };
    }

final VersionRangeResult versionRangeResult = resolver.resolveVersionRange( session, versionRangeRequest );

            if ( versionRangeResult.getHighestVersion() == null )
            {
                throw new UnresolvableModelException(
                    String.format( "No versions matched the requested dependency version range '%s'",
                                   dependency.getVersion() ),
                    dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );

            }

            if ( versionRangeResult.getVersionConstraint() != null
                     && versionRangeResult.getVersionConstraint().getRange() != null
                     && versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null )
            {
                // Message below is checked for in the MNG-4463 core IT.
                throw new UnresolvableModelException(
                    String.format( "The requested dependency version range '%s' does not specify an upper bound",
                                   dependency.getVersion() ),
                    dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );

            }

            dependency.setVersion( versionRangeResult.getHighestVersion().toString() );

            return resolveModel( dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
        }
        catch ( VersionRangeResolutionException e )
        {
            throw new UnresolvableModelException( e.getMessage(), dependency.getGroupId(), dependency.getArtifactId(),
                                                  dependency.getVersion(), e );

        }
    }
}

extends AbstractModule
{

    @Override
    protected void configure()
    {
        install( new AetherModule() );
        bind( ArtifactDescriptorReader.class ) //
        .to( DefaultArtifactDescriptorReader.class ).in( Singleton.class );
        bind( VersionResolver.class ) //
        .to( DefaultVersionResolver.class ).in( Singleton.class );
        bind( VersionRangeResolver.class ) //
        .to( DefaultVersionRangeResolver.class ).in( Singleton.class );
        bind( MetadataGeneratorFactory.class ).annotatedWith( Names.named( "snapshot" ) ) //
        .to( SnapshotMetadataGeneratorFactory.class ).in( Singleton.class );
        bind( MetadataGeneratorFactory.class ).annotatedWith( Names.named( "versions" ) ) //
        .to( VersionsMetadataGeneratorFactory.class ).in( Singleton.class );
        bind( ModelBuilder.class ) //
        .toInstance( new DefaultModelBuilderFactory().newInstance() );
    }

    @Provides
    @Singleton
    Set<MetadataGeneratorFactory> provideMetadataGeneratorFactories( @Named( "snapshot" )
                                                                     MetadataGeneratorFactory snapshot,
                                                                     @Named( "versions" )
                                                                     MetadataGeneratorFactory versions )
    {
        Set<MetadataGeneratorFactory> factories = new HashSet<>();

public static Dependency toDependency( org.apache.maven.model.Dependency dependency,
                                           ArtifactTypeRegistry stereotypes )
    {
        ArtifactType stereotype = stereotypes.get( dependency.getType() );
        if ( stereotype == null )
        {
            stereotype = new DefaultArtifactType( dependency.getType() );
        }

        boolean system = dependency.getSystemPath() != null && dependency.getSystemPath().length() > 0;

        Map<String, String> props = null;
        if ( system )
        {
            props = Collections.singletonMap( ArtifactProperties.LOCAL_PATH, dependency.getSystemPath() );
        }

        Artifact artifact =
            new DefaultArtifact( dependency.getGroupId(), dependency.getArtifactId(), dependency.getClassifier(), null,
                                 dependency.getVersion(), props, stereotype );

        List<Exclusion> exclusions = new ArrayList<>( dependency.getExclusions().size() );
        for ( org.apache.maven.model.Exclusion exclusion : dependency.getExclusions() )
        {
            exclusions.add( toExclusion( exclusion ) );

private Artifact createArtifact( String groupId, String artifactId, VersionRange versionRange, String type,
                                     String classifier, String scope, String inheritedScope, boolean optional )
    {
        String desiredScope = Artifact.SCOPE_RUNTIME;

        if ( inheritedScope == null )
        {
            desiredScope = scope;
        }
        else if ( Artifact.SCOPE_TEST.equals( scope ) || Artifact.SCOPE_PROVIDED.equals( scope ) )
        {
            return null;
        }
        else if ( Artifact.SCOPE_COMPILE.equals( scope ) && Artifact.SCOPE_COMPILE.equals( inheritedScope ) )
        {
            // added to retain compile artifactScope. Remove if you want compile inherited as runtime
            desiredScope = Artifact.SCOPE_COMPILE;
        }

        if ( Artifact.SCOPE_TEST.equals( inheritedScope ) )
        {
            desiredScope = Artifact.SCOPE_TEST;
        }

        if ( Artifact.SCOPE_PROVIDED.equals( inheritedScope ) )
        {
            desiredScope = Artifact.SCOPE_PROVIDED;
        }

        if ( Artifact.SCOPE_SYSTEM.equals( scope ) )
        {
            // system scopes come through unchanged...
            desiredScope = Artifact.SCOPE_SYSTEM;
        }

        ArtifactHandler handler = artifactHandlerManager.getArtifactHandler( type );

        return new DefaultArtifact( groupId, artifactId, versionRange, desiredScope, type, classifier, handler,
                                    optional );
    }

public Mirror getMirror( ArtifactRepository repository, List<Mirror> mirrors )
    {
        String repoId = repository.getId();

        if ( repoId != null && mirrors != null )
        {
            for ( Mirror mirror : mirrors )
            {
                if ( repoId.equals( mirror.getMirrorOf() ) && matchesLayout( repository, mirror ) )
                {
                    return mirror;
                }
            }

            for ( Mirror mirror : mirrors )
            {
                if ( matchPattern( repository, mirror.getMirrorOf() ) && matchesLayout( repository, mirror ) )
                {
                    return mirror;
                }
            }
        }

        return null;
    }

    /**
     * This method checks if the pattern matches the originalRepository. Valid patterns:
     * <ul>
     * <li>{@code *} = everything,</li>
     * <li>{@code external:*} = everything not on the localhost and not file based,</li>
     * <li>{@code external:http:*} = any repository not on the localhost using HTTP,</li>
     * <li>{@code repo,repo1} = {@code repo} or {@code repo1},</li>
     * <li>{@code *,!repo1} = everything except {@code repo1}.</li>
     * </ul>
     *
     * @param originalRepository to compare for a match.
     * @param pattern used for match. Currently only '*' is supported.
     * @return true if the repository is a match to this pattern.
     */
    static boolean matchPattern( ArtifactRepository originalRepository, String pattern )
    {
        boolean result = false;
        String originalId = originalRepository.getId();

        // simple checks first to short circuit processing below.
        if ( WILDCARD.equals( pattern ) || pattern.equals( originalId ) )
        {
            result = true;
        }
        else
        {
            // process the list
            String[] repos = pattern.split( "," );
            for ( String repo : repos )
            {

public String getLocation()
    {
        StringBuilder buffer = new StringBuilder( 256 );

        if ( getSource().length() > 0 )
        {
            if ( buffer.length() > 0 )
            {
                buffer.append( ", " );
            }
            buffer.append( getSource() );
        }

        if ( getLineNumber() > 0 )
        {
            if ( buffer.length() > 0 )
            {
                buffer.append( ", " );
            }
            buffer.append( "line " ).append( getLineNumber() );
        }

        if ( getColumnNumber() > 0 )
        {
            if ( buffer.length() > 0 )
            {
                buffer.append( ", " );
            }
            buffer.append( "column " ).append( getColumnNumber() );
        }

        return buffer.toString();
    }

master.put( key, element );

                        if ( !pending.isEmpty() )
                        {
                            predecessors.put( key, pending );
                            pending = new ArrayList<>();
                        }
                    }
                    else
                    {
                        pending.add( element );
                    }
                }

                List<Plugin> result = new ArrayList<>( src.size() + tgt.size() );
                for ( Map.Entry<Object, Plugin> entry : master.entrySet() )
                {
                    List<Plugin> pre = predecessors.get( entry.getKey() );
                    if ( pre != null )
                    {
                        result.addAll( pre );
                    }
                    result.add( entry.getValue() );
                }
                result.addAll( pending );

                target.setPlugins( result );
            }
        }

        @Override
        protected void mergePlugin( Plugin target, Plugin source, boolean sourceDominant, Map<Object, Object> context )

}

    public String pathOf( Artifact artifact )
    {
        return layout.pathOf( artifact );
    }

    public String pathOfRemoteRepositoryMetadata( ArtifactMetadata artifactMetadata )
    {
        return layout.pathOfRemoteRepositoryMetadata( artifactMetadata );
    }

    public String pathOfLocalRepositoryMetadata( ArtifactMetadata metadata, ArtifactRepository repository )
    {
        return layout.pathOfLocalRepositoryMetadata( metadata, repository );
    }

    public void setLayout( ArtifactRepositoryLayout layout )
    {
        this.layout = layout;
    }

    public ArtifactRepositoryLayout getLayout()
    {
        return layout;
    }

    public void setSnapshotUpdatePolicy( ArtifactRepositoryPolicy snapshots )
    {
        this.snapshots = snapshots;
    }

    public ArtifactRepositoryPolicy getSnapshots()
    {
        return snapshots;
    }

    public void setReleaseUpdatePolicy( ArtifactRepositoryPolicy releases )
    {
        this.releases = releases;
    }

    public ArtifactRepositoryPolicy getReleases()
    {
        return releases;
    }

    public String getKey()
    {
        return getId();
    }

    public boolean isBlacklisted()

private void visit( Plugin plugin )
        {
            if ( plugin != null )
            {
                String org, val;
                // Inherited
                org = plugin.getInherited();
                val = interpolate( org );
                if ( org != val )
                {
                    plugin.setInherited( val );
                }
                // Configuration
                visit( (Xpp3Dom) plugin.getConfiguration() );
                // GroupId
                org = plugin.getGroupId();
                val = interpolate( org );
                if ( org != val )
                {
                    plugin.setGroupId( val );
                }
                // ArtifactId
                org = plugin.getArtifactId();
                val = interpolate( org );
                if ( org != val )
                {
                    plugin.setArtifactId( val );
                }
                // Version
                org = plugin.getVersion();
                val = interpolate( org );
                if ( org != val )
                {
                    plugin.setVersion( val );
                }

protected AbstractMavenTransferListener( PrintStream out )
    {
        this.out = out;
    }

    @Override
    public void transferInitiated( TransferEvent event )
    {
        String action = event.getRequestType() == TransferEvent.RequestType.PUT ? "Uploading" : "Downloading";
        String direction = event.getRequestType() == TransferEvent.RequestType.PUT ? "to" : "from";

        TransferResource resource = event.getResource();
        StringBuilder message = new StringBuilder();
        message.append( action ).append( ' ' ).append( direction ).append( ' ' ).append( resource.getRepositoryId() );
        message.append( ": " );
        message.append( resource.getRepositoryUrl() ).append( resource.getResourceName() );

        out.println( message.toString() );

List<Repository> tgt = target.getRepositories();
            Map<Object, Repository> merged = new LinkedHashMap<>( ( src.size() + tgt.size() ) * 2 );

            List<Repository> dominant, recessive;
            if ( sourceDominant )
            {
                dominant = src;
                recessive = tgt;
            }
            else
            {
                dominant = tgt;
                recessive = src;
            }

            for ( Repository element : dominant )
            {
                Object key = getRepositoryKey( element );
                merged.put( key, element );
            }

            for ( Repository element : recessive )
            {
                Object key = getRepositoryKey( element );
                if ( !merged.containsKey( key ) )
                {
                    merged.put( key, element );
                }
            }

            target.setRepositories( new ArrayList<>( merged.values() ) );

}
                    }
                }
            }
        }
        catch ( Exception e )
        {
            invalidMetadata( session, trace, metadata, repository, e );
            result.addException( e );
        }

        return ( versioning != null ) ? versioning : new Versioning();
    }

    private void invalidMetadata( RepositorySystemSession session, RequestTrace trace, Metadata metadata,
                                  ArtifactRepository repository, Exception exception )
    {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder( session, EventType.METADATA_INVALID );
        event.setTrace( trace );
        event.setMetadata( metadata );
        event.setException( exception );
        event.setRepository( repository );

        repositoryEventDispatcher.dispatch( event.build() );
    }

public MetadataResolutionResult addCircularDependencyException( CyclicDependencyException e )
    {
        circularDependencyExceptions = initList( circularDependencyExceptions );

        circularDependencyExceptions.add( e );

        exceptions = initList( exceptions );

        exceptions.add( e );

        return this;
    }

    public CyclicDependencyException getCircularDependencyException( int i )
    {
        return circularDependencyExceptions.get( i );
    }

    public List<CyclicDependencyException> getCircularDependencyExceptions()
    {
        if ( circularDependencyExceptions == null )
        {
            return Collections.emptyList();
        }

        return Collections.unmodifiableList( circularDependencyExceptions );
    }

    // ------------------------------------------------------------------------
    // Repositories
    // ------------------------------------------------------------------------

    public List<ArtifactRepository> getRepositories()
    {
        if ( repositories == null )
        {
            return Collections.emptyList();
        }

        return Collections.unmodifiableList( repositories );
    }

    public MetadataResolutionResult setRepositories( final List<ArtifactRepository> repositories )

StringBuilder path = new StringBuilder( 128 );

        path.append( artifact.getArtifactId() ).append( ARTIFACT_SEPARATOR ).append( artifact.getVersion() );

        if ( artifact.hasClassifier() )
        {
            path.append( ARTIFACT_SEPARATOR ).append( artifact.getClassifier() );
        }

        if ( artifactHandler.getExtension() != null && artifactHandler.getExtension().length() > 0 )
        {
            path.append( GROUP_SEPARATOR ).append( artifactHandler.getExtension() );
        }

        return path.toString();
    }

    public String pathOfLocalRepositoryMetadata( ArtifactMetadata metadata, ArtifactRepository repository )
    {
        return pathOfRepositoryMetadata( metadata.getLocalFilename( repository ) );

protected void mergeModelBase_Properties( ModelBase target, ModelBase source, boolean sourceDominant,
                                              Map<Object, Object> context )
    {
        Properties merged = new Properties();
        if ( sourceDominant )
        {
            merged.putAll( target.getProperties() );
            merged.putAll( source.getProperties() );
        }
        else
        {
            merged.putAll( source.getProperties() );
            merged.putAll( target.getProperties() );
        }
        target.setProperties( merged );
        target.setLocation( "properties", InputLocation.merge( target.getLocation( "properties" ),
                                                               source.getLocation( "properties" ), sourceDominant ) );
    }

    protected void mergeDistributionManagement( DistributionManagement target, DistributionManagement source,

{
        MavenSession session = legacySupport.getSession();

        PluginDescriptor pluginDescriptor;
        try
        {
            pluginDescriptor =
                pluginManager.getPluginDescriptor( plugin, session.getCurrentProject().getRemotePluginRepositories(),
                                                   session.getRepositorySession() );

            pluginManager.setupPluginRealm( pluginDescriptor, session, null, null, null );
        }
        catch ( Exception e )
        {
            throw new PluginManagerException( plugin, e.getMessage(), e );
        }

        ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
        try
        {
            Thread.currentThread().setContextClassLoader( pluginDescriptor.getClassRealm() );

            return container.lookup( role, roleHint );

}

    private static String format( LocalRepository localRepository, List<RemoteRepository> remoteRepositories )
    {
        String repos = "[";

        if ( localRepository != null )
        {
            repos += localRepository.getId() + " (" + localRepository.getBasedir() + ")";
        }

        if ( remoteRepositories != null && !remoteRepositories.isEmpty() )
        {
            for ( RemoteRepository repository : remoteRepositories )
            {
                repos += ", ";

                if ( repository != null )
                {
                    repos += repository.getId() + " (" + repository.getUrl() + ")";
                }
            }
        }

        repos += "]";

        return repos;
    }

}

String DEFAULT_LAYOUT_ID = "default";

    String LOCAL_REPOSITORY_ID = "local";

    @Deprecated
    ArtifactRepositoryLayout getLayout( String layoutId )
        throws UnknownRepositoryLayoutException;

    @Deprecated
    ArtifactRepository createDeploymentArtifactRepository( String id, String url, String layoutId,
                                                           boolean uniqueVersion )
                                                               throws UnknownRepositoryLayoutException;

    ArtifactRepository createDeploymentArtifactRepository( String id, String url, ArtifactRepositoryLayout layout,
                                                           boolean uniqueVersion );

    ArtifactRepository createArtifactRepository( String id, String url, String layoutId,
                                                 ArtifactRepositoryPolicy snapshots, ArtifactRepositoryPolicy releases )
                                                     throws UnknownRepositoryLayoutException;

    ArtifactRepository createArtifactRepository( String id, String url, ArtifactRepositoryLayout repositoryLayout,
                                                 ArtifactRepositoryPolicy snapshots,
                                                 ArtifactRepositoryPolicy releases );

    void setGlobalUpdatePolicy( String snapshotPolicy );

    void setGlobalChecksumPolicy( String checksumPolicy );
}

|| Artifact.SCOPE_SYSTEM.equals( a.getScope() ) )
            {
                Dependency dependency = new Dependency();

                dependency.setArtifactId( a.getArtifactId() );
                dependency.setGroupId( a.getGroupId() );
                dependency.setVersion( a.getVersion() );
                dependency.setScope( a.getScope() );
                dependency.setType( a.getType() );
                dependency.setClassifier( a.getClassifier() );

                list.add( dependency );
            }
        }
        return Collections.unmodifiableList( list );
    }

    @Deprecated
    public List<Artifact> getTestArtifacts()

|| Artifact.SCOPE_SYSTEM.equals( a.getScope() ) )
            {
                Dependency dependency = new Dependency();

                dependency.setArtifactId( a.getArtifactId() );
                dependency.setGroupId( a.getGroupId() );
                dependency.setVersion( a.getVersion() );
                dependency.setScope( a.getScope() );
                dependency.setType( a.getType() );
                dependency.setClassifier( a.getClassifier() );

                list.add( dependency );
            }
        }
        return Collections.unmodifiableList( list );
    }

    @Deprecated
    public List<Artifact> getTestArtifacts()