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.cmdline.matcher.impl;
021    
022    import org.crsh.cmdline.CommandCompletion;
023    import org.crsh.cmdline.CommandDescriptor;
024    import org.crsh.cmdline.Delimiter;
025    import org.crsh.cmdline.matcher.CmdCompletionException;
026    import org.crsh.cmdline.matcher.tokenizer.Token;
027    
028    import java.util.Set;
029    
030    class OptionCompletion<T> extends org.crsh.cmdline.matcher.impl.Completion {
031    
032      /** . */
033      private final CommandDescriptor<T, ?> descriptor;
034    
035      /** . */
036      private final Token.Literal.Option prefix;
037    
038      OptionCompletion(CommandDescriptor<T, ?> descriptor, Token.Literal.Option prefix) {
039        this.descriptor = descriptor;
040        this.prefix = prefix;
041      }
042    
043      @Override
044      protected CommandCompletion complete() throws CmdCompletionException {
045        org.crsh.cmdline.spi.Completion.Builder builder = org.crsh.cmdline.spi.Completion.builder(prefix.getValue());
046        Set<String> optionNames = prefix instanceof Token.Literal.Option.Short ? descriptor.getShortOptionNames() : descriptor.getLongOptionNames();
047        for (String optionName : optionNames) {
048          if (optionName.startsWith(prefix.getValue())) {
049            builder.add(optionName.substring(prefix.getValue().length()), true);
050          }
051        }
052        return new CommandCompletion(Delimiter.EMPTY, builder.build());
053      }
054    }