/*
* 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.sshd.common.util;
/**
* TODO Add javadoc
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class BufferUtils {
public static String printHex(byte[] array) {
return printHex(array, 0, array.length);
}
public static String printHex(byte[] array, int offset, int len) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < len; i++) {
byte b = array[offset + i];
if (sb.length() > 0) {
sb.append(' ');
}
sb.append(digits[(b >> 4) & 0x0F]);
sb.append(digits[b & 0x0F]);
}
return sb.toString();
}
public static boolean equals(byte[] a1, byte[] a2) {
if (a1.length != a2.length) {
return false;
}
return equals(a1, 0, a2, 0, a1.length);
}
public static boolean equals(byte[] a1, int a1Offset, byte[] a2, int a2Offset, int length) {
if (a1.length < a1Offset + length || a2.length < a2Offset + length) {
return false;
}
while (length-- > 0) {
if (a1[a1Offset++] != a2[a2Offset++]) {
return false;
}
}
return true;
}
final static char[] digits = {
'0' , '1' , '2' , '3' , '4' , '5' ,
'6' , '7' , '8' , '9' , 'a' , 'b' ,
'c' , 'd' , 'e' , 'f'
};
}