001 /* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 package org.crsh.cli.completers; 020 021 import org.crsh.cli.descriptor.ParameterDescriptor; 022 import org.crsh.cli.spi.Completer; 023 import org.crsh.cli.spi.Completion; 024 025 import java.util.Enumeration; 026 027 /** 028 * A completer for system property names. 029 * 030 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> 031 */ 032 public class SystemPropertyNameCompleter implements Completer { 033 034 public Completion complete(ParameterDescriptor parameter, String prefix) throws Exception { 035 Completion.Builder b = new Completion.Builder(prefix); 036 for (Enumeration<Object> e = System.getProperties().keys();e.hasMoreElements();) { 037 Object key = e.nextElement(); 038 if (key instanceof String) { 039 String s = (String)key; 040 if (s.startsWith(prefix)) { 041 b.add(s.substring(prefix.length()), true); 042 } 043 } 044 } 045 return b.build(); 046 } 047 }