proton-j/src/test/java/org/apache/qpid/proton/systemtests/BinaryFormatter.java

/*
 * 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.qpid.proton.systemtests;

public class BinaryFormatter
{

    public String format(byte[] binaryData)
    {
        StringBuilder stringBuilder = new StringBuilder();
        for(int i = 0; i < binaryData.length; i++)
        {
            byte theByte = binaryData[i];
            String formattedByte = formatByte(theByte);
            stringBuilder.append(formattedByte);
        }
        return stringBuilder.toString();
    }

    private String formatByte(byte theByte)
    {
        final String retVal;
        if(Character.isLetterOrDigit(theByte))
        {
            retVal = String.format("[ %c ]", theByte);
        }
        else
        {
            retVal = String.format("[x%02x]", theByte);
        }
        return retVal;
    }

}