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.completion;
021    
022    import org.crsh.cli.descriptor.CommandDescriptor;
023    import org.crsh.cli.impl.Delimiter;
024    import org.crsh.cli.impl.tokenizer.Token;
025    
026    import java.util.Set;
027    
028    class 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    }