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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC.
* OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "core/xml/XMLErrors.h"
#include "HTMLNames.h"
#include "SVGNames.h"
#include "core/dom/Document.h"
#include "core/dom/Element.h"
#include "core/dom/Text.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
using namespace HTMLNames;
const int maxErrors = 25;
XMLErrors::XMLErrors(Document* document)
: m_document(document)
, m_errorCount(0)
, m_lastErrorPosition(TextPosition::belowRangePosition())
{
}
void XMLErrors::handleError(ErrorType type, const char* message, int lineNumber, int columnNumber)
{
handleError(type, message, TextPosition(OrdinalNumber::fromOneBasedInt(lineNumber), OrdinalNumber::fromOneBasedInt(columnNumber)));
}
void XMLErrors::handleError(ErrorType type, const char* message, TextPosition position)
{
if (type == fatal || (m_errorCount < maxErrors && m_lastErrorPosition.m_line != position.m_line && m_lastErrorPosition.m_column != position.m_column)) {
switch (type) {
case warning:
appendErrorMessage("warning", position, message);
break;
case fatal:
case nonFatal:
appendErrorMessage("error", position, message);
}
m_lastErrorPosition = position;
++m_errorCount;
}
}
void XMLErrors::appendErrorMessage(const String& typeString, TextPosition position, const char* message)
{
// <typeString> on line <lineNumber> at column <columnNumber>: <message>
m_errorMessages.append(typeString);
m_errorMessages.appendLiteral(" on line ");
m_errorMessages.appendNumber(position.m_line.oneBasedInt());
m_errorMessages.appendLiteral(" at column ");
m_errorMessages.appendNumber(position.m_column.oneBasedInt());
m_errorMessages.appendLiteral(": ");
m_errorMessages.append(message);
}
static inline PassRefPtr<Element> createXHTMLParserErrorHeader(Document* doc, const String& errorMessages)
{
RefPtr<Element> reportElement = doc->createElement(QualifiedName(nullAtom, "parsererror", xhtmlNamespaceURI), true);
Vector<Attribute> reportAttributes;
reportAttributes.append(Attribute(styleAttr, "display: block; white-space: pre; border: 2px solid #c77; padding: 0 1em 0 1em; margin: 1em; background-color: #fdd; color: black"));
reportElement->parserSetAttributes(reportAttributes);
RefPtr<Element> h3 = doc->createElement(h3Tag, true);
reportElement->parserAppendChild(h3.get());
h3->parserAppendChild(doc->createTextNode("This page contains the following errors:"));
RefPtr<Element> fixed = doc->createElement(divTag, true);
Vector<Attribute> fixedAttributes;
fixedAttributes.append(Attribute(styleAttr, "font-family:monospace;font-size:12px"));
fixed->parserSetAttributes(fixedAttributes);
reportElement->parserAppendChild(fixed.get());
fixed->parserAppendChild(doc->createTextNode(errorMessages));
h3 = doc->createElement(h3Tag, true);
reportElement->parserAppendChild(h3.get());
h3->parserAppendChild(doc->createTextNode("Below is a rendering of the page up to the first error."));
return reportElement.release();
}
void XMLErrors::insertErrorMessageBlock()
{
// One or more errors occurred during parsing of the code. Display an error block to the user above
// the normal content (the DOM tree is created manually and includes line/col info regarding
// where the errors are located)
// Create elements for display
RefPtr<Element> documentElement = m_document->documentElement();
if (!documentElement) {
RefPtr<Element> rootElement = m_document->createElement(htmlTag, true);
RefPtr<Element> body = m_document->createElement(bodyTag, true);
rootElement->parserAppendChild(body);
m_document->parserAppendChild(rootElement);
documentElement = body.get();
} else if (documentElement->namespaceURI() == SVGNames::svgNamespaceURI) {
RefPtr<Element> rootElement = m_document->createElement(htmlTag, true);
RefPtr<Element> body = m_document->createElement(bodyTag, true);
rootElement->parserAppendChild(body);
m_document->parserRemoveChild(*documentElement);
body->parserAppendChild(documentElement);
m_document->parserAppendChild(rootElement);
documentElement = body.get();
}
String errorMessages = m_errorMessages.toString();
RefPtr<Element> reportElement = createXHTMLParserErrorHeader(m_document, errorMessages);
if (m_document->transformSourceDocument()) {
Vector<Attribute> attributes;
attributes.append(Attribute(styleAttr, "white-space: normal"));
RefPtr<Element> paragraph = m_document->createElement(pTag, true);
paragraph->parserSetAttributes(attributes);
paragraph->parserAppendChild(m_document->createTextNode("This document was created as the result of an XSL transformation. The line and column numbers given are from the transformed result."));
reportElement->parserAppendChild(paragraph.release());
}
Node* firstChild = documentElement->firstChild();
if (firstChild)
documentElement->parserInsertBefore(reportElement, *firstChild);
else
documentElement->parserAppendChild(reportElement);
// FIXME: Why do we need to call this manually?
m_document->updateStyleIfNeeded();
}
} // namespace WebCore
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