src/Lucene.Net.Analysis.Common/Analysis/In/IndicTokenizer.cs

using J2N;
using Lucene.Net.Analysis.Util;
using Lucene.Net.Util;
using System;
using System.Globalization;
using System.IO;

namespace Lucene.Net.Analysis.In
{
    /*
	 * 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.
	 */

    /// <summary>
    /// Simple Tokenizer for text in Indian Languages. </summary>
    /// @deprecated (3.6) Use <see cref="Standard.StandardTokenizer"/> instead. 
    [Obsolete("(3.6) Use StandardTokenizer instead.")]
    public sealed class IndicTokenizer : CharTokenizer
    {
        public IndicTokenizer(LuceneVersion matchVersion, AttributeFactory factory, TextReader input)
            : base(matchVersion, factory, input)
        {
        }

        public IndicTokenizer(LuceneVersion matchVersion, TextReader input)
            : base(matchVersion, input)
        {
        }

        protected override bool IsTokenChar(int c)
        {
            UnicodeCategory category = Character.GetType(c);

            return Character.IsLetter(c) ||
                category == UnicodeCategory.NonSpacingMark ||
                category == UnicodeCategory.Format ||
                category == UnicodeCategory.SpacingCombiningMark;
        }
    }
}