/*
 * Copyright 2011 Greg Milette and Adam Stroud
 * 
 * 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 root.gast.speech.text.match;


/**
 * encode strings using soundex, but allow partial matches
 * @author Greg Milette <<a href="mailto:gregorym@gmail.com">gregorym@gmail.com</a>>
 */
public class SoundsLikeThresholdWordMatcher extends SoundsLikeWordMatcher
{
    private int minimumCharactersSame;

    public SoundsLikeThresholdWordMatcher(int minimumCharactersSame,
            String... wordsIn)
    {
        super(wordsIn);
        this.minimumCharactersSame = minimumCharactersSame;
    }

    @Override
    public boolean isIn(String wordCheck)
    {
        boolean in = false;
        String compareTo = soundex.encode(wordCheck);
        for (String word : getWords())
        {
            if (sameEncodedString(word, compareTo))
            {
                in = true;
                break;
            }
        }
        return in;
    }

    private boolean sameEncodedString(String s1, String s2)
    {
        int numSame = 0;
        for (int i = 0; i < s1.length(); i++)
        {
            char c1 = s1.charAt(i);
            char c2 = s2.charAt(i);
            if (c1 == c2)
            {
                numSame++;
            }
        }
        return (numSame >= minimumCharactersSame);
    }
}