StringHelper.cs

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/* 
 * 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.Util
{
    
    
    public abstract class StringHelper
    {
        public static StringInterner interner = new SimpleStringInterner(1024, 8);
        
        public static System.String Intern(System.String s)
        {
            return interner.Intern(s);
        }

        public static int BytesDifference(byte[] bytes1, int len1, byte[] bytes2, int len2)
        {
            int len = len1 < len2?len1:len2;
            for (int i = 0; i < len; i++)
                if (bytes1[i] != bytes2[i])
                    return i;
            return len;
        }
        
        public static int StringDifference(System.String s1, System.String s2)
        {
            int len1 = s1.Length;
            int len2 = s2.Length;
            int len = len1 < len2?len1:len2;
            for (int i = 0; i < len; i++)
            {
                if (s1[i] != s2[i])
                {
                    return i;
                }
            }
            return len;
        }
        
        private StringHelper()
        {
        }
    }
}