int process(CharSequence org, int index, char begin, char end, StringBuilder result, Link link) {
StringBuilder line = new StringBuilder(org);
int nesting = 1;
StringBuilder variable = new StringBuilder();
outer:
while (index < line.length()) {
char c1 = line.charAt(index++);
if (c1 == end) {
if (--nesting == 0) {
result.append(replace(variable.toString(), link));
return index;
}
} else if (c1 == begin) nesting++;
else if (c1 == '\\' && index < line.length() - 1 && line.charAt(index) == '$') {
// remove the escape backslash and interpret the dollar
// as a
// literal
index++;
variable.append('$');
continue outer;
} else if (c1 == '$' && index < line.length() - 2) {
char c2 = line.charAt(index);
char terminator = getTerminator(c2);
if (terminator != 0) {
index = process(line, index + 1, c2, terminator, variable, link);
continue outer;
}
} else if (c1 == '.' && index < line.length() && line.charAt(index) == '/') {
// Found the sequence ./
if (index == 1 || Character.isWhitespace(line.charAt(index - 2))) {
// make sure it is preceded by whitespace or starts at begin
index++;
variable.append(domain.getBase().getAbsolutePath());
variable.append('/');
continue outer;
}
}
variable.append(c1);
}
result.append(variable);
return index;
}
@Override
public synchronized void run() {
while (!quit) {
// filter_input();
try {
Thread.sleep(1); // poll at 1kHz
// grab data from shared buffer and move it the local one
ourBuffer.append(sharedBuffer.take());
// System.out.print(ourBuffer);
// create a matcher to find an open tag in the buffer
int endCloseTag;
int startOpenTag;
Matcher closeTagMatcher = closeTagPattern.matcher(ourBuffer);
// look or a closing tag in our buffer
if (closeTagMatcher.find()) {
endCloseTag = closeTagMatcher.end();
openTag = "<" + ourBuffer.charAt(closeTagMatcher.start() + 2) + ">";
// find corresponding opening tag
startOpenTag = ourBuffer.indexOf(openTag);
// send the input string to the GUI for processing
if (startOpenTag >= 0 && startOpenTag < endCloseTag) {
gui.incoming(ourBuffer.substring(startOpenTag, endCloseTag));
// clear our buffer
ourBuffer.delete(startOpenTag, endCloseTag);
} else {
ourBuffer.delete(0, endCloseTag);
}
}
} catch (Exception e) {
System.out.print(e + "\n");
}
}
}
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();
}