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 */ 019 020 package org.crsh.cli.impl.bootstrap; 021 022 import org.crsh.cli.impl.descriptor.CommandDescriptorImpl; 023 import org.crsh.cli.impl.Delimiter; 024 import org.crsh.cli.impl.descriptor.HelpDescriptor; 025 import org.crsh.cli.impl.lang.CommandFactory; 026 import org.crsh.cli.impl.invocation.InvocationMatch; 027 import org.crsh.cli.impl.invocation.InvocationMatcher; 028 029 import java.util.Iterator; 030 import java.util.ServiceLoader; 031 032 /** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */ 033 public class Main { 034 035 public static void main(String[] args) throws Exception { 036 ServiceLoader<CommandProvider> loader = ServiceLoader.load(CommandProvider.class); 037 Iterator<CommandProvider> iterator = loader.iterator(); 038 if (iterator.hasNext()) { 039 040 // 041 StringBuilder line = new StringBuilder(); 042 for (int i = 0;i < args.length;i++) { 043 if (i > 0) { 044 line.append(' '); 045 } 046 Delimiter.EMPTY.escape(args[i], line); 047 } 048 049 // 050 CommandProvider commandProvider = iterator.next(); 051 Class<?> commandClass = commandProvider.getCommandClass(); 052 handle(commandClass, line.toString()); 053 } 054 } 055 056 private static <T> void handle(Class<T> commandClass, String line) throws Exception { 057 CommandDescriptorImpl<T> descriptor = CommandFactory.DEFAULT.create(commandClass); 058 descriptor = HelpDescriptor.create(descriptor); 059 InvocationMatcher<T> matcher = descriptor.invoker("main"); 060 InvocationMatch<T> match = matcher.match(line); 061 T instance = commandClass.newInstance(); 062 Object o = match.invoke(instance); 063 if (o != null) { 064 System.out.println(o); 065 } 066 } 067 }