/** {@inheritDoc} */
@Override
public ByteString normalizeValue(ByteSequence value) throws DirectoryException {
StringBuilder buffer = new StringBuilder();
prepareUnicode(buffer, value, TRIM, CASE_FOLD);
int bufferLength = buffer.length();
if (bufferLength == 0) {
if (value.length() > 0) {
// This should only happen if the value is composed entirely
// of spaces. In that case, the normalized value is a single space.
return SINGLE_SPACE_VALUE;
} else {
// The value is empty, so it is already normalized.
return ByteString.empty();
}
}
// Replace any consecutive spaces with a single space.
for (int pos = bufferLength - 1; pos > 0; pos--) {
if (buffer.charAt(pos) == ' ') {
if (buffer.charAt(pos - 1) == ' ') {
buffer.delete(pos, pos + 1);
}
}
}
return ByteString.valueOf(buffer.toString());
}
