power-framework/docs/content/Modules/Utils/index.adoc

Utils

private boolean isInRange(final int value, final int min, final int max) {
return ((value >= min) && (value <= max));
}

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import sun.nio.cs.StandardCharsets;


    /**
     * Converts byte array to its hexadecimal representation
     *
     * @param byteArray
     * @return
     * @throws UnsupportedEncodingException
     */
    private static String convertByteArrayToHex(final byte[] byteArray) {
        StringBuffer sb = new StringBuffer();

        for (int i = 0; i < byteArray.length; i++) {
            byte b = byteArray[i];
            sb.append(byteToHex(b));
        }
        String result = sb.toString();
        return result;
    }

    private final static char[] HEX_CHARS = new char[] {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

    private static String byteToHex(byte b) {
        int number = b;

        // standardization from byte
        if (number < 0) {
            number = 256 + number;
        }

        int b1 = number / 16;
        int b2 = number - b1 * 16;
        String char1 = String.valueOf(HEX_CHARS[b1]);
        String char2 = String.valueOf(HEX_CHARS[b2]);
        return char1 + char2;
    }




    private static String byteToHex(final byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash) {
            formatter.format("%02x", b);
        }
        String result = formatter.toString();
        formatter.close();
        return result;
    }