/*
* 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.
*/
using System.IO;
using System.Collections;
using Lucene.Net.Analysis;
using Lucene.Net.Analysis.Tokenattributes;
using Lucene.Net.Util;
namespace Lucene.Net.Analysis.AR
{
/**
* A that applies to normalize the orthography.
*
*/
public class ArabicNormalizationFilter : TokenFilter
{
protected ArabicNormalizer normalizer = null;
private ITermAttribute termAtt;
public ArabicNormalizationFilter(TokenStream input) : base(input)
{
normalizer = new ArabicNormalizer();
termAtt = AddAttribute();
}
public override bool IncrementToken()
{
if (input.IncrementToken())
{
int newlen = normalizer.Normalize(termAtt.TermBuffer(), termAtt.TermLength());
termAtt.SetTermLength(newlen);
return true;
}
return false;
}
}
}