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/*
* 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.tuscany.sca.shell.jline;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.LinkedList;
import java.util.List;
import jline.Completor;
import jline.ConsoleReader;
import org.apache.tuscany.sca.shell.Shell;
/**
* Keep all the JLine specific code out of the Shell class so that it runs ok
* when jline isn't on the classpath.
*/
public class JLine {
public static String readLine(Object r) throws IOException {
return ((ConsoleReader)r).readLine();
}
public static Object createJLineReader(final Shell shell) throws IOException {
ConsoleReader reader = new ConsoleReader();
fixCtrlC(reader);
// Add a Ctrl-c listener
reader.addTriggeredAction((char)3, new ActionListener() {
public void actionPerformed(ActionEvent e) {
shell.bye();
System.exit(0);
}
});
reader.setBellEnabled(false);
// TODO: write a Completor specific to this that can handle the individual command arguments
List<Completor> completors = new LinkedList<Completor>();
// completors.add(new SimpleCompletor(Shell.COMMANDS));
// completors.add(new ICURICompletor(shell.node));
// completors.add(new FileNameCompletor());
// reader.addCompletor(new ArgumentCompletor(completors));
reader.addCompletor(new TShellCompletor(shell));
return reader;
}
/**
* The windowsbindings.properties shipped inside jline maps ctrl-c to INSERT
* with the comment "(frankly, I wasn't sure where to bind this)". That does not
* seem a great choice as it disables ctrl-c interupt so this resets that binding.
*/
private static void fixCtrlC(ConsoleReader reader) {
try {
Field f = ConsoleReader.class.getDeclaredField("keybindings");
f.setAccessible(true);
short[] keybindings = (short[])f.get(reader);
if (keybindings[3] == -48) keybindings[3] = 3;
} catch (Exception e) {
e.printStackTrace(); // shouldnt happen
}
}
}
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