/*

 */
package io.malloc.ccc;

class Util {
    public static byte[] h2b(String s) {
        int len = s.length();
        byte[] data = new byte[len / 2];

        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character
                    .digit(s.charAt(i + 1), 16));
        }

        return data;
    }

    final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();

    public static String b2h(byte[] bytes) {
        char[] hexChars = new char[bytes.length * 2];

        for (int j = 0; j < bytes.length; j++) {
            int v = bytes[j] & 0xFF;
            hexChars[j * 2] = hexArray[v >>> 4];
            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
        }

        return new String(hexChars);
    }
}
