/*
* 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 org.apache.karaf.shell.commands;
import jline.console.history.History;
import org.apache.felix.gogo.commands.Command;
import org.apache.felix.gogo.commands.Option;
import org.apache.karaf.shell.console.AbstractAction;
import org.fusesource.jansi.Ansi;
/**
* History command
*/
@Command(scope = "shell", name="history", description="Prints command history.")
public class HistoryAction extends AbstractAction {
@Option(name = "-c", aliases = { "--clear" }, description = "Clears the shell command history.", required = false, multiValued = false)
private boolean clear;
@Override
protected Object doExecute() throws Exception {
History history = (History) session.get(".jline.history");
if (history != null && clear) {
history.clear();
}
for (History.Entry element : history) {
System.out.println(
Ansi.ansi()
.a(" ")
.a(Ansi.Attribute.INTENSITY_BOLD).render("%3d", element.index() + 1).a(Ansi.Attribute.INTENSITY_BOLD_OFF)
.a(" ")
.a(element.value())
.toString());
}
return null;
}
}