/*
 * JBoss, by Red Hat.
 * Copyright 2010, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.forge.shell.command.parser;

import java.util.ArrayList;
import java.util.List;
import java.util.Queue;

import org.jboss.forge.parser.java.util.Strings;
import org.jboss.forge.shell.command.CommandMetadata;
import org.jboss.forge.shell.command.OptionMetadata;

/**
 * @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
 */
public class OrderedValueVarargsOptionParser implements CommandParser
{
   @Override
   public CommandParserContext parse(final CommandMetadata command, final Queue<String> tokens,
            final CommandParserContext ctx)
   {
      try
      {
         OptionMetadata option = command.getOrderedOptionByIndex(ctx.getOrderedParamCount());
         if (option.isVarargs())
         {
            List<String> args = new ArrayList<String>();
            String lastToken = null;
            // gobble unless we hit a named token
            while (!tokens.isEmpty())
            {
               lastToken = tokens.peek();
               if (lastToken.startsWith("-") && command.hasOption(lastToken.replaceAll("^--?", "")))
               {
                  break;
               }
               lastToken = tokens.remove();
               lastToken = Strings.stripQuotes(lastToken);
               args.add(lastToken);
            }
            ctx.put(option, args.toArray(new String[args.size()]), Strings.stripQuotes(lastToken));
            ctx.incrementParmCount();
         }
      }
      catch (IllegalArgumentException e)
      {
         ctx.addWarning("The command [" + command + "] takes ["
                     + command.getNumOrderedOptions() + "] unnamed argument(s), but found ["
                     + (ctx.getOrderedParamCount() + 1)
                     + "].");
      }
      return ctx;
   }

}