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
020package org.crsh.cli.impl.completion;
021
022import org.crsh.cli.descriptor.CommandDescriptor;
023import org.crsh.cli.impl.Delimiter;
024import org.crsh.cli.impl.tokenizer.Token;
025
026import java.util.Set;
027
028class OptionCompletion<T> extends Completion {
029
030  /** . */
031  private final CommandDescriptor<T> descriptor;
032
033  /** . */
034  private final Token.Literal.Option prefix;
035
036  public OptionCompletion(CommandDescriptor<T> descriptor, Token.Literal.Option prefix) {
037    this.descriptor = descriptor;
038    this.prefix = prefix;
039  }
040
041  @Override
042  public CompletionMatch complete() throws CompletionException {
043    org.crsh.cli.spi.Completion.Builder builder = org.crsh.cli.spi.Completion.builder(prefix.getValue());
044    Set<String> optionNames = prefix instanceof Token.Literal.Option.Short ? descriptor.getShortOptionNames() : descriptor.getLongOptionNames();
045    for (String optionName : optionNames) {
046      if (optionName.startsWith(prefix.getValue())) {
047        builder.add(optionName.substring(prefix.getValue().length()), true);
048      }
049    }
050    return new CompletionMatch(Delimiter.EMPTY, builder.build());
051  }
052}