import java.io.PrintStream;

import org.eclipse.aether.AbstractRepositoryListener;
import org.eclipse.aether.RepositoryEvent;

public class ConsoleRepositoryListener extends AbstractRepositoryListener {

    private PrintStream out;

    public ConsoleRepositoryListener() {
        this(null);
    }

    public ConsoleRepositoryListener(PrintStream out) {

 */
package org.apache.maven.cli.logging;

import java.io.PrintStream;

import org.slf4j.Logger;
import org.slf4j.Marker;

import static java.util.Objects.requireNonNull;

/**
 * @since 3.1.0
 */
public class Slf4jStdoutLogger implements Logger {
    private static final String ERROR = "[ERROR] ";

    private final PrintStream out;

    public Slf4jStdoutLogger() {
        this(System.out);
    }

        this.err = new PrintWriter(toPsOrDef(err, System.err), true);
    }

    private PrintStream toPsOrDef(OutputStream outputStream, PrintStream def) {
        if (outputStream == null) {
            return def;
        }
        if (outputStream instanceof PrintStream ps) {
            return ps;
        }
        return new PrintStream(outputStream);
    }

    //

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

import java.io.PrintStream;
import java.io.PrintWriter;

import org.apache.maven.api.services.MessageBuilder;
import org.apache.maven.api.services.MessageBuilderFactory;
import org.eclipse.aether.transfer.AbstractTransferListener;

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

import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;

import org.apache.maven.api.services.MessageBuilderFactory;

public class ConsoleTransferListener extends AbstractTransferListener {

    private PrintStream out;

    private Map<TransferResource, Long> downloads = new ConcurrentHashMap<>();

    private int lastLength;

    public ConsoleTransferListener() {
        this(null);
    }

    public ConsoleTransferListener(PrintStream out) {
        this.out = (out != null) ? out : System.out;
    }

    @Override

        CliRequest cliRequest = new CliRequest(new String[] {"--version", "--batch-mode"}, null);
        ByteArrayOutputStream systemOut = new ByteArrayOutputStream();
        PrintStream oldOut = System.out;
        System.setOut(new PrintStream(systemOut));

        // when
        try {
            cli.cli(cliRequest);
        } catch (MavenCli.ExitException exitException) {
            // expected

        try {
            final PrintStream originalOutStream = System.out;
            final ByteArrayOutputStream outStream = new ByteArrayOutputStream();
            System.setOut(new PrintStream(outStream, true));
            final PrintStream originalErrStream = System.err;
            final ByteArrayOutputStream errStream = new ByteArrayOutputStream();
            System.setErr(new PrintStream(errStream, true));
            try {

import com.google.errorprone.annotations.Keep;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.Serializable;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.AnnotatedElement;

import com.google.errorprone.annotations.Keep;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.Serializable;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.AnnotatedElement;