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/*******************************************************************************
* Copyright (c) 2011 SAP AG
* 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.completion.common.Completer;
/**
* This class provides completion for command names.
*
*/
public class CommandNamesCompleter implements Completer {
private CommandSession session;
private static final String COMMANDS = ".commands";
public CommandNamesCompleter(CommandSession session) {
this.session = session;
}
public Map<String, Integer> getCandidates(String buffer, int cursor) {
// CommandSession.get(".commands") returns the names of all registered commands
@SuppressWarnings("unchecked")
Set<String> 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<String, Integer>();
}
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<String>();
for(String commandName : commandNames) {
clearedCommandNames.add(commandName.substring(commandName.indexOf(":") + 1));
}
return clearedCommandNames;
}
}
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