private static String getUnmatchedBrackets(final String initialText) {
String text = initialText.replaceAll("\\\\.", "_"); // Remove escaped characters.
text = text.replaceAll("'.'", "_"); // Remove character literals.
text = text.replaceAll("\"([^\\n]*?)\"", "_"); // Remove string literals.
text = text.replaceAll("/\\*(?s).*?\\*/", "_"); // Remove C comments.
text = text.replaceAll("//[^\\n]*", "_"); // Remove C++ comments.
StringBuilder unmatchedBrackets = new StringBuilder();
for (int i = 0; i < text.length(); ++i) {
char ch = text.charAt(i);
if (PBracketUtilities.isOpenBracket(ch) && ch != '<') {
unmatchedBrackets.append(ch);
} else if (PBracketUtilities.isCloseBracket(ch) && ch != '>') {
char openBracket = PBracketUtilities.getPartnerForBracket(ch);
int lastCharIndex = unmatchedBrackets.length() - 1;
if (lastCharIndex >= 0 && unmatchedBrackets.charAt(lastCharIndex) == openBracket) {
unmatchedBrackets.deleteCharAt(lastCharIndex);
} else {
unmatchedBrackets.append(ch);
}
}
}
return unmatchedBrackets.toString();
}
