/*
 * Copyright (c) 2011 Stiftung Deutsches Elektronen-Synchrotron,
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
package org.csstudio.domain.common.codec;

import javax.annotation.Nonnull;

/**
 * Static Util class providing access to simple codec functionality.
 *
 * @author bknerr
 * @since 10.08.2011
 */
public final class BaseCodecUtil {
    private static final String HEX_TABLE = "0123456789ABCDEF";
    /**
     * Constructor.
     */
    private BaseCodecUtil() {
        // EMPTY
    }

    /**
     * Converts a byte array to a string representation in hexadecimal.
     * Example (byte)255 - "FF", (byte)0 - 00, (byte)16 - "11", (byte)65 - "41"
     * @param bytes
     * @return the hex representation of the byte array
     */
    @Nonnull
    public static String getHex(@Nonnull final byte[] bytes) {
        final StringBuilder hex = new StringBuilder(2 * bytes.length);
        for (final byte b : bytes) {
            hex.append(HEX_TABLE.charAt((b & 0xF0) >> 4)).append(HEX_TABLE.charAt((b & 0x0F)));
        }
        return hex.toString();
    }
}