karaf/shell/console/src/main/java/jline/AnsiWindowsTerminal.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package jline;

import org.fusesource.jansi.AnsiConsole;
import org.fusesource.jansi.WindowsAnsiOutputStream;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;

public class AnsiWindowsTerminal extends WindowsTerminal {

    private boolean ansisupported = checkAnsiSupport();

    @Override
    public boolean isANSISupported() {
        return ansisupported;
    }

    @Override
    public int readCharacter(InputStream in) throws IOException {
        return in.read();
    }

    public int readDirectChar(InputStream in) throws IOException {
        return super.readCharacter(in);
    }

    public static boolean checkAnsiSupport() {
        OutputStream dummy = new ByteArrayOutputStream();
        OutputStream ansiout = AnsiConsole.wrapOutputStream(dummy);
        try {
            dummy.close();
            ansiout.close();
        } catch (IOException ignore) {
        }

        return (ansiout instanceof WindowsAnsiOutputStream);

    }

}