content: package org.apache.lucene.search.spell;
  
  /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.
   */
  
  
  import java.util.Iterator;
  import java.io.*;
  
  
  /**
   * Dictionary represented by a text file.
   * 
   * <p/>Format allowed: 1 word per line:<br/>
   * word1<br/>
   * word2<br/>
   * word3<br/>
   */
  public class PlainTextDictionary implements Dictionary {
  
    private BufferedReader in;
    private String line;
    private boolean hasNextCalled;
  
    public PlainTextDictionary(File file) throws FileNotFoundException {
      in = new BufferedReader(new FileReader(file));
    }
  
    public PlainTextDictionary(InputStream dictFile) {
      in = new BufferedReader(new InputStreamReader(dictFile));
    }
  
    /**
     * Creates a dictionary based on a reader.
     */
    public PlainTextDictionary(Reader reader) {
      in = new BufferedReader(reader);
    }
  
    public Iterator<String> getWordsIterator() {
      return new fileIterator();
    }
  
    final class fileIterator implements Iterator<String> {
      public String next() {
        if (!hasNextCalled) {
          hasNext();
        }
        hasNextCalled = false;
        return line;
      }
  
      public boolean hasNext() {
        hasNextCalled = true;
        try {
          line = in.readLine();
        } catch (IOException ex) {
          throw new RuntimeException(ex);
        }
        return (line != null) ? true : false;
      }
  
      public void remove() {
        throw new UnsupportedOperationException();
      }
    }
  
  }
  