/*
* 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.impl.console.commands;
import java.io.PrintStream;
import java.util.Arrays;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.karaf.shell.api.console.Session;
import org.apache.karaf.shell.impl.console.commands.help.HelpCommand;
public class SubShellCommand extends TopLevelCommand {
private final String name;
private final AtomicInteger references = new AtomicInteger();
public SubShellCommand(String name) {
this.name = name;
}
public void increment() {
references.incrementAndGet();
}
public int decrement() {
return references.decrementAndGet();
}
@Override
public String getName() {
return name;
}
@Override
public String getDescription() {
return "Enter the subshell";
}
@Override
protected void doExecute(Session session) throws Exception {
session.put(Session.SUBSHELL, name);
session.put(Session.SCOPE, name + ":" + session.get(Session.SCOPE));
}
@Override
protected void printHelp(Session session, PrintStream out) {
try {
new HelpCommand(session.getFactory()).execute(session, Arrays.<Object>asList("shell|" + name));
} catch (Exception e) {
throw new RuntimeException("Unable to print subshell help", e);
}
}
}