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.shell.impl.command.system; 020 021 import org.crsh.cli.Command; 022 import org.crsh.cli.Usage; 023 import org.crsh.command.BaseCommand; 024 import org.crsh.command.InvocationContext; 025 import org.crsh.shell.impl.command.CRaSH; 026 import org.crsh.text.Color; 027 import org.crsh.text.Decoration; 028 import org.crsh.text.Style; 029 import org.crsh.text.ui.LabelElement; 030 import org.crsh.text.ui.TableElement; 031 032 import java.io.IOException; 033 import java.util.Map; 034 035 /** @author Julien Viet */ 036 public class help extends BaseCommand { 037 038 @Usage("provides basic help") 039 @Command 040 public void main(InvocationContext<Object> context) throws Exception { 041 042 // 043 TableElement table = new TableElement().rightCellPadding(1); 044 table.row( 045 new LabelElement("NAME").style(Style.style(Decoration.bold)), 046 new LabelElement("DESCRIPTION") 047 ); 048 049 // 050 CRaSH crash = (CRaSH)context.getSession().get("crash"); 051 for (Map.Entry<String, String> command : crash.getCommands()) { 052 try { 053 String desc = command.getValue(); 054 if (desc == null) { 055 desc = ""; 056 } 057 table.row( 058 new LabelElement(command.getKey()).style(Style.style(Color.red)), 059 new LabelElement(desc)); 060 } catch (Exception ignore) { 061 // 062 } 063 } 064 065 // 066 context.provide(new LabelElement("Try one of these commands with the -h or --help switch:\n")); 067 context.provide(table); 068 } 069 }