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• UTF8ByteArrayUtils.java

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org.apache.hadoop.util.UTF8ByteArrayUtils Maven / Gradle / Ivy

/**
 * 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.
 */

package org.apache.hadoop.util;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class UTF8ByteArrayUtils {
  /**
   * Find the first occurrence of the given byte b in a UTF-8 encoded string
   * @param utf a byte array containing a UTF-8 encoded string
   * @param start starting offset
   * @param end ending position
   * @param b the byte to find
   * @return position that first byte occures otherwise -1
   */
  public static int findByte(byte [] utf, int start, int end, byte b) {
    for(int i=start; i