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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.Text;
namespace Apache.Qpid.Buffer
{
public class ByteBufferHexDumper
{
private static byte[] highDigits;
private static byte[] lowDigits;
static ByteBufferHexDumper()
{
byte[] digits = { (byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5', (byte)'6',
(byte)'7', (byte)'8', (byte)'9', (byte)'A', (byte)'B', (byte)'C', (byte)'D',
(byte)'E', (byte)'F' };
int i;
byte[] high = new byte[256];
byte[] low = new byte[256];
for (i = 0; i < 256; i++)
{
high[i] = digits[i >> 4];
low[i] = digits[i & 0x0F];
}
highDigits = high;
lowDigits = low;
}
public static string GetHexDump(ByteBuffer input)
{
int size = input.Remaining;
if (size == 0)
{
return "empty";
}
StringBuilder output = new StringBuilder(size * 3 - 1);
byte[] data = input.Array;
int byteValue = data[0] & 0xFF;
output.Append((char) highDigits[byteValue]);
output.Append((char) lowDigits[byteValue]);
for (int i = 1 ; i < size; i++)
{
output.Append(' ');
byteValue = data[i] & 0xFF;
output.Append((char) highDigits[byteValue]);
output.Append((char) lowDigits[byteValue]);
}
return output.ToString();
}
}
}
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