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package org.apache.solr.util;
/**
 * 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.
 */


/**
 *
 *
 **/
//Since Arrays.equals doesn't implement offsets for equals
public class ArraysUtils {

  /**
   * See if two array slices are the same.
   *
   * @param left        The left array to compare
   * @param offsetLeft  The offset into the array.  Must be positive
   * @param right       The right array to compare
   * @param offsetRight the offset into the right array.  Must be positive
   * @param length      The length of the section of the array to compare
   * @return true if the two arrays, starting at their respective offsets, are equal
   * 
   * @see java.util.Arrays#equals(char[], char[])
   */
  public static boolean equals(char[] left, int offsetLeft, char[] right, int offsetRight, int length) {
    if ((offsetLeft + length <= left.length) && (offsetRight + length <= right.length)) {
      for (int i = 0; i < length; i++) {
        if (left[offsetLeft + i] != right[offsetRight + i]) {
          return false;
        }

      }
      return true;
    }
    return false;
  }
}