package org.freemarker.docgen; import java.util.LinkedList; import java.util.List; import org.xml.sax.ErrorHandler; import org.xml.sax.SAXParseException; class CollectingErrorHandler implements ErrorHandler, MessageStreamActivityMonitor { private final int maxErrorMessages; private boolean hadNewErrorMessage; CollectingErrorHandler(int maxErrors) { maxErrorMessages = maxErrors; } private final List<String> errors = new LinkedList<String>(); public void warning(SAXParseException spe) { // Nop } public void error(SAXParseException spe) throws SAXParseException { addError("ERROR", spe); } public void fatalError(SAXParseException spe) throws SAXParseException { addError("FATAL ERROR", spe); } public List<String> getErrors() { return errors; } private void addError(String type, SAXParseException spe) { int ln = errors.size(); if (ln < maxErrorMessages) { hadNewErrorMessage = true; errors.add(type + ": " + spe.getMessage() + "\n" + "(at line " + spe.getLineNumber() + ", column " + spe.getColumnNumber() + " of " + spe.getSystemId() + ")"); } else if (ln == maxErrorMessages) { hadNewErrorMessage = true; errors.add("TOO MANY ERRORS: Some error messages were discarded."); } } public boolean hadNewErrorMessage() { return hadNewErrorMessage; } public void reset() { hadNewErrorMessage = false; } }