toUnicode = processToUnicode();
if (toUnicode == null) {
toUnicode = new CMap();
}
}
final String unicode = toUnicode.lookup(new byte[]{(byte) currentNumber}, 0, 1);
if ((unicode != null) && (unicode.length() == 1)) {
this.uni2byte.put(unicode.charAt(0), currentNumber);
this.diffmap.put(unicode.charAt(0), currentNumber);
}
}