protected static String getConcernNameWithMnemonic(
Concern concern, Set<Character> mnemonicsAlreadyUsed) {
String concernName = concern.getDisplayName();
assert concernName != null && !concernName.isEmpty();
if (concernName.indexOf('&') >= 0) return concernName;
char[] buf = concernName.toCharArray();
char[] newBuf = new char[buf.length + 1]; // Add one for the ampersand
for (int i = 0, newIndex = 0; i < buf.length; ++i, ++newIndex) {
char c = buf[i];
if ((newIndex == i)
&& Character.isLetter(c)
&& mnemonicsAlreadyUsed.add(c)) // Returns true if mnemonic doesn't exist
{
newBuf[newIndex++] = '&';
}
newBuf[newIndex] = c;
}
return new String(newBuf);
}
