| /******************************************************************************* |
| * Copyright (c) 2011, 2017 SAP AG and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Lazar Kirchev, SAP AG - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.equinox.console.completion; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.felix.service.command.CommandSession; |
| import org.eclipse.equinox.console.commands.CommandsTracker; |
| import org.eclipse.equinox.console.completion.common.Completer; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.util.tracker.ServiceTracker; |
| |
| /** |
| * This class provides completion for command names. |
| * |
| */ |
| public class CommandNamesCompleter implements Completer { |
| |
| private CommandSession session; |
| private ServiceTracker<CommandsTracker, CommandsTracker> commandsTrackerTracker; |
| private static final String COMMANDS = ".commands"; |
| |
| public CommandNamesCompleter(BundleContext context, CommandSession session) { |
| this.session = session; |
| commandsTrackerTracker = new ServiceTracker<>(context, CommandsTracker.class.getName(), null); |
| commandsTrackerTracker.open(); |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public Map<String, Integer> getCandidates(String buffer, int cursor) { |
| CommandsTracker commandsTracker = commandsTrackerTracker.getService(); |
| Set<String> commandNames = null; |
| if (commandsTracker != null) { |
| commandNames = commandsTracker.getCommands(); |
| } |
| |
| // CommandSession.get(".commands") returns the names of all registered commands |
| if (commandNames == null || commandNames.isEmpty()) { |
| commandNames = (Set<String>) session.get(COMMANDS); |
| } |
| |
| // command names are stored in the session in lower case |
| String currentToken = CommandLineParser.getCurrentToken(buffer, cursor).toLowerCase(); |
| if(currentToken == null || currentToken.equals("")) { |
| return new HashMap<>(); |
| } |
| |
| if (!currentToken.contains(":")) { |
| // the current token does not contain a scope qualifier, so remove scopes from possible candidates |
| commandNames = clearScopes(commandNames); |
| } |
| StringsCompleter completer = new StringsCompleter(commandNames, true); |
| return completer.getCandidates(buffer, cursor); |
| } |
| |
| private Set<String> clearScopes(Set<String> commandNames) { |
| Set<String> clearedCommandNames = new HashSet<>(); |
| |
| for(String commandName : commandNames) { |
| clearedCommandNames.add(commandName.substring(commandName.indexOf(":") + 1)); |
| } |
| |
| return clearedCommandNames; |
| } |
| } |