content: /*
   * JBoss, Home of Professional Open Source
   * Copyright 2014 Red Hat Inc. and/or its affiliates and other contributors
   * as indicated by the @authors tag. All rights reserved.
   * See the copyright.txt in the distribution for a
   * full listing of individual contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.aesh.command.export;
  
  import org.aesh.parser.LineParser;
  import org.aesh.readline.completion.CompleteOperation;
  import org.aesh.readline.completion.Completion;
  import org.aesh.readline.util.Parser;
  
  /**
   * @author <a href="mailto:stale.pedersen@jboss.org">Ståle W. Pedersen</a>
   */
  public class ExportCompletion implements Completion {
  
      private static final String EXPORT = "export";
      private static final String EXPORT_SPACE = "export ";
      private final ExportManager exportManager;
      private final LineParser lineParser;
  
      public ExportCompletion(ExportManager manager) {
          this.exportManager = manager;
          lineParser = new LineParser();
      }
  
      @Override
      public void complete(CompleteOperation completeOperation) {
  
          if(EXPORT_SPACE.equals(completeOperation.getBuffer()) ||
                  EXPORT.equals(completeOperation.getBuffer().trim())) {
              completeOperation.addCompletionCandidates(exportManager.getAllNamesWithEquals());
              completeOperation.setOffset(completeOperation.getCursor());
          }
          else if(completeOperation.getBuffer().startsWith(EXPORT_SPACE)) {
              String word = lineParser.parseLine(completeOperation.getBuffer(), completeOperation.getCursor()).selectedWord().word();
              if(word.length() > 0) {
                  completeOperation.addCompletionCandidates( exportManager.findAllMatchingKeys(word));
                  if(Parser.containsNonEscapedDollar(word)) {
                      int index = word.lastIndexOf('$');
                      completeOperation.setOffset(completeOperation.getCursor()-(word.length()-index));
                  }
                  else
                      completeOperation.setOffset(completeOperation.getCursor()-word.length());
              }
          }
          else if(Parser.containsNonEscapedDollar( completeOperation.getBuffer())) {
              String word = lineParser.parseLine(completeOperation.getBuffer(), completeOperation.getCursor()).selectedWord().word();
              if(Parser.containsNonEscapedDollar(word)) {
                  completeOperation.addCompletionCandidates(exportManager.findAllMatchingKeys(word));
                  completeOperation.setOffset(completeOperation.getCursor()-word.length());
              }
          }
      }
  }
  