/**
 *  ServingXML
 *  
 *  Copyright (C) 2006  Daniel Parker
 *    daniel.parker@servingxml.com 
 * 
 * Licensed 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 com.servingxml.util;

public class ByteArrayHelper {

  public final static int startsWith(byte[] buffer, int start, int length, byte[] value) {
    int index = 0;

    boolean found = false;
    if (value.length > 0 && (length - value.length) >= 0) {
      found = true;
      for (int i = 0; found && i < value.length; ++i) {
        if (value[i] != buffer[start+i]) {
          found = false;
        }
      }
    }
    return found ? value.length : 0;
  }
}
