com.microsoft.alm.helpers.BitConverter Maven / Gradle / Ivy

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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See License.txt in the project root.

package com.microsoft.alm.helpers;

/**
 * Equivalent to .NET's BitConverter class
 */
public class BitConverter {
    /**
     * Converts the numeric value of each element of a specified array of bytes
     * to its equivalent hexadecimal string representation.
     *
     * @param bytes An array of bytes.
     * @return A string of hexadecimal pairs separated by hyphens,
     * where each pair represents the corresponding element in bytes;
     * for example, "7F-2C-4A-00".
     */
    public static String toString(final byte[] bytes) {
        final StringBuilder sb = new StringBuilder();
        boolean first = true;
        for (final byte b : bytes) {
            if (!first) {
                sb.append('-');
            }
            first = false;
            final String pair = String.format("%1$X", b);
            if (pair.length() < 2) {
                sb.append('0');
            }
            sb.append(pair);
        }
        return sb.toString();
    }
}