@Override
public final boolean incrementToken() throws IOException {
if (input.incrementToken()) {
final char[] buffer = termAtt.buffer();
final int length = termAtt.length();
for (int i = 0; i < length; ) {
i += Character.toChars(Character.toLowerCase(charUtils.codePointAt(buffer, i)), buffer, i);
}
return true;
} else return false;
}
/**
* Create a new LowerCaseFilter, that normalizes token text to lower case.
*
* @param matchVersion See <a href="#version">above</a>
* @param in TokenStream to filter
*/
public LowerCaseFilter(Version matchVersion, TokenStream in) {
super(in);
charUtils = CharacterUtils.getInstance(matchVersion);
}