package org.eclipse.jgit.pgm.opt;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import org.eclipse.jgit.pgm.internal.CLIText;
   import org.kohsuke.args4j.CmdLineException;
   import org.kohsuke.args4j.CmdLineParser;
   import org.kohsuke.args4j.OptionDef;
  import org.kohsuke.args4j.spi.OptionHandler;
  import org.kohsuke.args4j.spi.Parameters;
  import org.kohsuke.args4j.spi.Setter;
  
  /**
   * Handler which allows to parse option with few values
   *
   * @since 4.2
   */
  public class OptionWithValuesListHandler extends OptionHandler<List<?>> {
  
  	/**
  	 * Constructor for OptionWithValuesListHandler.
  	 *
  	 * @param parser
  	 *            a {@link org.kohsuke.args4j.CmdLineParser} object.
  	 * @param option
  	 *            a {@link org.kohsuke.args4j.OptionDef} object.
  	 * @param setter
  	 *            a {@link org.kohsuke.args4j.spi.Setter} object.
  	 */
  	public OptionWithValuesListHandler(CmdLineParser parser,
  			OptionDef option, Setter<List<?>> setter) {
  		super(parser, option, setter);
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public int parseArguments(Parameters params) throws CmdLineException {
  		final List<String> list = new ArrayList<>();
  		for (int idx = 0; idx < params.size(); idx++) {
  			final String p;
  			try {
  				p = params.getParameter(idx);
  			} catch (CmdLineException cle) {
  				break;
  			}
  			list.add(p);
  		}
  		setter.addValue(list);
  		return list.size();
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public String getDefaultMetaVariable() {
  		return CLIText.get().metaVar_values;
  	}
  
  }