void MarkupAccumulator::appendQuotedURLAttributeValue(StringBuilder& result, const Element* element, const Attribute& attribute)
{
ASSERT(element->isURLAttribute(const_cast<Attribute*>(&attribute)));
const String resolvedURLString = resolveURLIfNeeded(element, attribute.value());
UChar quoteChar = '\"';
String strippedURLString = resolvedURLString.stripWhiteSpace();
if (protocolIsJavaScript(strippedURLString)) {
// minimal escaping for javascript urls
if (strippedURLString.contains('"')) {
if (strippedURLString.contains('\''))
strippedURLString.replace('\"', """);
else
quoteChar = '\'';
}
result.append(quoteChar);
result.append(strippedURLString);
result.append(quoteChar);
return;
}
// FIXME: This does not fully match other browsers. Firefox percent-escapes non-ASCII characters for innerHTML.
result.append(quoteChar);
appendAttributeValue(result, resolvedURLString, false);
result.append(quoteChar);
}
void MarkupAccumulator::appendNamespace(StringBuilder& result, const AtomicString& prefix, const AtomicString& namespaceURI, Namespaces& namespaces, bool allowEmptyDefaultNS)
{
namespaces.checkConsistency();
if (namespaceURI.isEmpty()) {
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-xhtml-syntax.html#xml-fragment-serialization-algorithm
if (allowEmptyDefaultNS && namespaces.get(emptyAtom.impl())) {
result.append(' ');
result.append(xmlnsAtom.string());
result.appendLiteral("=\"\"");
}
return;
}
// Use emptyAtoms's impl() for both null and empty strings since the HashMap can't handle 0 as a key
AtomicStringImpl* pre = prefix.isEmpty() ? emptyAtom.impl() : prefix.impl();
AtomicStringImpl* foundNS = namespaces.get(pre);
if (foundNS != namespaceURI.impl() && !namespaces.get(namespaceURI.impl())) {
namespaces.set(pre, namespaceURI.impl());
result.append(' ');
result.append(xmlnsAtom.string());
if (!prefix.isEmpty()) {
result.append(':');
result.append(prefix);
}
result.append('=');
result.append('"');
appendAttributeValue(result, namespaceURI, false);
result.append('"');
}
}
void MarkupFormatter::appendAttribute(StringBuilder& result, const Element& element, const Attribute& attribute, Namespaces* namespaces)
{
bool documentIsHTML = serializeAsHTMLDocument(element);
QualifiedName prefixedName = attribute.name();
if (documentIsHTML && !attributeIsInSerializedNamespace(attribute)) {
result.append(' ');
result.append(attribute.name().localName());
} else {
if (attribute.namespaceURI() == XMLNSNames::xmlnsNamespaceURI) {
if (!attribute.prefix() && attribute.localName() != xmlnsAtom)
prefixedName.setPrefix(xmlnsAtom);
if (namespaces) { // Account for the namespace attribute we're about to append.
const AtomicString& lookupKey = (!attribute.prefix()) ? emptyAtom : attribute.localName();
namespaces->set(lookupKey, attribute.value());
}
} else if (attribute.namespaceURI() == XMLNames::xmlNamespaceURI) {
if (!attribute.prefix())
prefixedName.setPrefix(xmlAtom);
} else {
if (attribute.namespaceURI() == XLinkNames::xlinkNamespaceURI) {
if (!attribute.prefix())
prefixedName.setPrefix(xlinkAtom);
}
if (namespaces && shouldAddNamespaceAttribute(attribute, element)) {
if (!prefixedName.prefix()) {
// This behavior is in process of being standardized. See crbug.com/248044 and https://www.w3.org/Bugs/Public/show_bug.cgi?id=24208
String prefixPrefix("ns", 2);
for (unsigned i = attribute.namespaceURI().impl()->existingHash(); ; ++i) {
AtomicString newPrefix(String(prefixPrefix + String::number(i)));
AtomicString foundURI = namespaces->get(newPrefix);
if (foundURI == attribute.namespaceURI() || foundURI == nullAtom) {
// We already generated a prefix for this namespace.
prefixedName.setPrefix(newPrefix);
break;
}
}
}
ASSERT(prefixedName.prefix());
appendNamespace(result, prefixedName.prefix(), attribute.namespaceURI(), *namespaces);
}
}
result.append(' ');
result.append(prefixedName.toString());
}
result.append('=');
if (element.isURLAttribute(attribute)) {
appendQuotedURLAttributeValue(result, element, attribute);
} else {
result.append('"');
appendAttributeValue(result, attribute.value(), documentIsHTML);
result.append('"');
}
}
void StyledMarkupAccumulator::appendStyleNodeOpenTag(StringBuilder& out, StylePropertySet* style, const Document& document, bool isBlock)
{
// wrappingStyleForSerialization should have removed -webkit-text-decorations-in-effect
ASSERT(propertyMissingOrEqualToNone(style, CSSPropertyWebkitTextDecorationsInEffect));
if (isBlock)
out.appendLiteral("<div style=\"");
else
out.appendLiteral("<span style=\"");
appendAttributeValue(out, style->asText(), document.isHTMLDocument());
out.appendLiteral("\">");
}
void StyledMarkupAccumulator::appendElement(StringBuilder& out, Element& element, bool addDisplayInline)
{
const bool documentIsHTML = element.document().isHTMLDocument();
appendOpenTag(out, element, 0);
const bool shouldAnnotateOrForceInline = element.isHTMLElement() && (shouldAnnotate() || addDisplayInline);
const bool shouldOverrideStyleAttr = shouldAnnotateOrForceInline || shouldApplyWrappingStyle(element);
AttributeCollection attributes = element.attributes();
AttributeCollection::iterator end = attributes.end();
for (AttributeCollection::iterator it = attributes.begin(); it != end; ++it) {
// We'll handle the style attribute separately, below.
if (it->name() == HTMLNames::styleAttr && shouldOverrideStyleAttr)
continue;
appendAttribute(out, element, *it, 0);
}
if (shouldOverrideStyleAttr) {
RefPtr<EditingStyle> newInlineStyle = nullptr;
if (shouldApplyWrappingStyle(element)) {
newInlineStyle = m_wrappingStyle->copy();
newInlineStyle->removePropertiesInElementDefaultStyle(&element);
newInlineStyle->removeStyleConflictingWithStyleOfElement(&element);
} else
newInlineStyle = EditingStyle::create();
if (element.isStyledElement() && element.inlineStyle())
newInlineStyle->overrideWithStyle(element.inlineStyle());
if (shouldAnnotateOrForceInline) {
if (shouldAnnotate())
newInlineStyle->mergeStyleFromRulesForSerialization(&toHTMLElement(element));
if (&element == m_highestNodeToBeSerialized && m_shouldAnnotate == AnnotateForNavigationTransition)
newInlineStyle->addAbsolutePositioningFromElement(element);
if (addDisplayInline)
newInlineStyle->forceInline();
}
if (!newInlineStyle->isEmpty()) {
out.appendLiteral(" style=\"");
appendAttributeValue(out, newInlineStyle->style()->asText(), documentIsHTML);
out.append('\"');
}
}
appendCloseTag(out, element);
}
void MarkupAccumulator::appendNamespace(StringBuilder& result, const AtomicString& prefix, const AtomicString& namespaceURI, Namespaces& namespaces)
{
if (namespaceURI.isEmpty())
return;
const AtomicString& lookupKey = (!prefix) ? emptyAtom : prefix;
AtomicString foundURI = namespaces.get(lookupKey);
if (foundURI != namespaceURI) {
namespaces.set(lookupKey, namespaceURI);
result.append(' ');
result.append(xmlnsAtom.string());
if (!prefix.isEmpty()) {
result.append(':');
result.append(prefix);
}
result.appendLiteral("=\"");
appendAttributeValue(result, namespaceURI, false);
result.append('"');
}
}
void MarkupAccumulator::appendNamespace(StringBuilder& result, const AtomicString& prefix, const AtomicString& namespaceURI, Namespaces& namespaces)
{
if (namespaceURI.isEmpty())
return;
// Use emptyAtoms's impl() for both null and empty strings since the HashMap can't handle 0 as a key
StringImpl* pre = prefix.isEmpty() ? emptyAtom.impl() : prefix.impl();
StringImpl* foundNS = namespaces.get(pre);
if (foundNS != namespaceURI.impl()) {
namespaces.set(pre, namespaceURI.impl());
result.append(' ');
result.append(xmlnsAtom.string());
if (!prefix.isEmpty()) {
result.append(':');
result.append(prefix);
}
result.appendLiteral("=\"");
appendAttributeValue(result, namespaceURI, false);
result.append('"');
}
}
void MarkupAccumulator::appendAttribute(StringBuilder& result, const Element& element, const Attribute& attribute, Namespaces* namespaces)
{
bool documentIsHTML = element.document().isHTMLDocument();
result.append(' ');
QualifiedName prefixedName = attribute.name();
if (documentIsHTML && !attributeIsInSerializedNamespace(attribute))
result.append(attribute.name().localName());
else {
if (!attribute.namespaceURI().isEmpty()) {
AtomicStringImpl* foundNS = namespaces && attribute.prefix().impl() ? namespaces->get(attribute.prefix().impl()) : 0;
bool prefixIsAlreadyMappedToOtherNS = foundNS && foundNS != attribute.namespaceURI().impl();
if (attribute.prefix().isEmpty() || !foundNS || prefixIsAlreadyMappedToOtherNS) {
if (AtomicStringImpl* prefix = namespaces ? namespaces->get(attribute.namespaceURI().impl()) : 0)
prefixedName.setPrefix(AtomicString(prefix));
else {
bool shouldBeDeclaredUsingAppendNamespace = !attribute.prefix().isEmpty() && !foundNS;
if (!shouldBeDeclaredUsingAppendNamespace && attribute.localName() != xmlnsAtom && namespaces)
generateUniquePrefix(prefixedName, *namespaces);
}
}
}
result.append(prefixedName.toString());
}
result.append('=');
if (element.isURLAttribute(attribute))
appendQuotedURLAttributeValue(result, element, attribute);
else {
result.append('"');
appendAttributeValue(result, attribute.value(), documentIsHTML);
result.append('"');
}
if ((inXMLFragmentSerialization() || !documentIsHTML) && namespaces && shouldAddNamespaceAttribute(attribute, *namespaces))
appendNamespace(result, prefixedName.prefix(), prefixedName.namespaceURI(), *namespaces);
}
void MarkupAccumulator::appendNamespace(StringBuilder& result, const AtomicString& prefix, const AtomicString& namespaceURI, Namespaces& namespaces, bool allowEmptyDefaultNS)
{
namespaces.checkConsistency();
if (namespaceURI.isEmpty()) {
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-xhtml-syntax.html#xml-fragment-serialization-algorithm
if (allowEmptyDefaultNS && namespaces.get(emptyAtom.impl())) {
result.append(' ');
result.append(xmlnsAtom.string());
result.appendLiteral("=\"\"");
}
return;
}
// Use emptyAtoms's impl() for both null and empty strings since the HashMap can't handle 0 as a key
AtomicStringImpl* pre = prefix.isEmpty() ? emptyAtom.impl() : prefix.impl();
AtomicStringImpl* foundNS = namespaces.get(pre);
if (foundNS != namespaceURI.impl()) {
namespaces.set(pre, namespaceURI.impl());
// Add namespace to prefix pair so we can do constraint checking later.
if (inXMLFragmentSerialization() && !prefix.isEmpty())
namespaces.set(namespaceURI.impl(), pre);
// Make sure xml prefix and namespace are always known to uphold the constraints listed at http://www.w3.org/TR/xml-names11/#xmlReserved.
if (namespaceURI.impl() == XMLNames::xmlNamespaceURI.impl())
return;
result.append(' ');
result.append(xmlnsAtom.string());
if (!prefix.isEmpty()) {
result.append(':');
result.append(prefix);
}
result.append('=');
result.append('"');
appendAttributeValue(result, namespaceURI, false);
result.append('"');
}
}
void MarkupAccumulator::appendAttribute(StringBuilder& out, Element* element, const Attribute& attribute, Namespaces* namespaces)
{
bool documentIsHTML = element->document()->isHTMLDocument();
out.append(' ');
if (documentIsHTML)
out.append(attribute.name().localName());
else
out.append(attribute.name().toString());
out.append('=');
if (element->isURLAttribute(const_cast<Attribute*>(&attribute)))
appendQuotedURLAttributeValue(out, element, attribute);
else {
out.append('\"');
appendAttributeValue(out, attribute.value(), documentIsHTML);
out.append('\"');
}
if (!documentIsHTML && namespaces && shouldAddNamespaceAttribute(attribute, *namespaces))
appendNamespace(out, attribute.prefix(), attribute.namespaceURI(), *namespaces);
}
void MarkupAccumulator::appendAttribute(StringBuilder& result, const Element& element, const Attribute& attribute, Namespaces* namespaces)
{
bool documentIsHTML = serializeAsHTMLDocument(element);
result.append(' ');
QualifiedName prefixedName = attribute.name();
if (documentIsHTML && !attributeIsInSerializedNamespace(attribute)) {
result.append(attribute.name().localName());
} else {
if (attribute.namespaceURI() == XLinkNames::xlinkNamespaceURI) {
if (!attribute.prefix())
prefixedName.setPrefix(xlinkAtom);
} else if (attribute.namespaceURI() == XMLNames::xmlNamespaceURI) {
if (!attribute.prefix())
prefixedName.setPrefix(xmlAtom);
} else if (attribute.namespaceURI() == XMLNSNames::xmlnsNamespaceURI) {
if (attribute.name() != XMLNSNames::xmlnsAttr && !attribute.prefix())
prefixedName.setPrefix(xmlnsAtom);
}
result.append(prefixedName.toString());
}
result.append('=');
if (element.isURLAttribute(attribute)) {
appendQuotedURLAttributeValue(result, element, attribute);
} else {
result.append('"');
appendAttributeValue(result, attribute.value(), documentIsHTML);
result.append('"');
}
if (!documentIsHTML && namespaces && shouldAddNamespaceAttribute(attribute, *namespaces))
appendNamespace(result, prefixedName.prefix(), prefixedName.namespaceURI(), *namespaces);
}
