private final int[] getFirstCaseDiff(
final String text, final String pattern, final Locale locale) {
final CollationElementIterator targIter = m_collator.getCollationElementIterator(text);
final CollationElementIterator patIter = m_collator.getCollationElementIterator(pattern);
int startTarg = -1;
int endTarg = -1;
int startPatt = -1;
int endPatt = -1;
final int done = getElement(CollationElementIterator.NULLORDER);
int patternElement = 0, targetElement = 0;
boolean getPattern = true, getTarget = true;
while (true) {
if (getPattern) {
startPatt = patIter.getOffset();
patternElement = getElement(patIter.next());
endPatt = patIter.getOffset();
}
if ((getTarget)) {
startTarg = targIter.getOffset();
targetElement = getElement(targIter.next());
endTarg = targIter.getOffset();
}
getTarget = getPattern = true;
if ((patternElement == done) || (targetElement == done)) {
return null;
} else if (targetElement == 0) {
getPattern = false;
} else if (patternElement == 0) {
getTarget = false;
} else if (targetElement != patternElement) { // mismatch
if ((startPatt < endPatt) && (startTarg < endTarg)) {
final String subText = text.substring(startTarg, endTarg);
final String subPatt = pattern.substring(startPatt, endPatt);
final String subTextUp = subText.toUpperCase(locale);
final String subPattUp = subPatt.toUpperCase(locale);
if (m_collator.compare(subTextUp, subPattUp) != 0) { // not case diffference
continue;
}
int diff[] = {UNKNOWN_CASE, UNKNOWN_CASE};
if (m_collator.compare(subText, subTextUp) == 0) {
diff[0] = UPPER_CASE;
} else if (m_collator.compare(subText, subText.toLowerCase(locale)) == 0) {
diff[0] = LOWER_CASE;
}
if (m_collator.compare(subPatt, subPattUp) == 0) {
diff[1] = UPPER_CASE;
} else if (m_collator.compare(subPatt, subPatt.toLowerCase(locale)) == 0) {
diff[1] = LOWER_CASE;
}
if (((diff[0] == UPPER_CASE) && (diff[1] == LOWER_CASE))
|| ((diff[0] == LOWER_CASE) && (diff[1] == UPPER_CASE))) {
return diff;
} else { // not case diff
continue;
}
} else {
continue;
}
}
}
}
