/*
* This file is part of muCommander, http://www.mucommander.com
* Copyright (C) 2002-2016 Maxence Bernard
*
* muCommander is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* muCommander is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.mucommander.ui.autocomplete.completers.services;
import java.util.Arrays;
import java.util.Iterator;
import java.util.Set;
import java.util.Vector;
/**
* This <code>CompletionService</code> handles system variables completion.
*
* @author Arik Hadas
*/
public class SystemVariablesService implements CompletionService {
private String[] cachedKeyNames;
public SystemVariablesService() {
Set<String> keys = System.getenv().keySet();
int nbKeys = keys.size();
cachedKeyNames = new String[nbKeys];
Iterator<String> iter = keys.iterator();
for (int i=0; i<nbKeys; i++)
cachedKeyNames[i] = "$" + iter.next();
Arrays.sort(cachedKeyNames, String.CASE_INSENSITIVE_ORDER);
}
public Vector<String> getPossibleCompletions(String path) {
return PrefixFilter.createPrefixFilter(path).filter(cachedKeyNames);
}
public String complete(String selectedCompletion) {
String result = null;
int nbKeyNames = cachedKeyNames.length;
for (int i=0; i<nbKeyNames; i++)
if (cachedKeyNames[i].equalsIgnoreCase(selectedCompletion)) {
result = cachedKeyNames[i];
break;
}
return result;
}
}