/*
* 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;
namespace Lucene.Net.Analysis
{
/// Normalizes token text to lower case.
///
///
/// $Id: LowerCaseFilter.java 564715 2007-08-10 18:34:33Z mikemccand $
///
public sealed class LowerCaseFilter : TokenFilter
{
public LowerCaseFilter(TokenStream in_Renamed) : base(in_Renamed)
{
}
public override Token Next(Token result)
{
result = input.Next(result);
if (result != null)
{
char[] buffer = result.TermBuffer();
int length = result.termLength;
for (int i = 0; i < length; i++)
buffer[i] = System.Char.ToLower(buffer[i]);
return result;
}
else
return null;
}
}
}