WebVTTParser::ParseState WebVTTParser::collectTimingsAndSettings(const String& line)
{
// 4.8.10.13.3 Collect WebVTT cue timings and settings.
// 1-3 - Let input be the string being parsed and position be a pointer into input
unsigned position = 0;
skipWhiteSpace(line, &position);
// 4-5 - Collect a WebVTT timestamp. If that fails, then abort and return failure. Otherwise, let cue's text track cue start time be the collected time.
m_currentStartTime = collectTimeStamp(line, &position);
if (m_currentStartTime == malformedTime)
return BadCue;
if (position >= line.length())
return BadCue;
skipWhiteSpace(line, &position);
// 6-9 - If the next three characters are not "-->", abort and return failure.
if (line.find("-->", position) == kNotFound)
return BadCue;
position += 3;
if (position >= line.length())
return BadCue;
skipWhiteSpace(line, &position);
// 10-11 - Collect a WebVTT timestamp. If that fails, then abort and return failure. Otherwise, let cue's text track cue end time be the collected time.
m_currentEndTime = collectTimeStamp(line, &position);
if (m_currentEndTime == malformedTime)
return BadCue;
skipWhiteSpace(line, &position);
// 12 - Parse the WebVTT settings for the cue (conducted in TextTrackCue).
m_currentSettings = line.substring(position, line.length()-1);
return CueText;
}
VTTParser::ParseState VTTParser::collectTimingsAndSettings(const String& line)
{
VTTScanner input(line);
// Collect WebVTT cue timings and settings. (5.3 WebVTT cue timings and settings parsing.)
// Steps 1 - 3 - Let input be the string being parsed and position be a pointer into input.
input.skipWhile<isASpace>();
// Steps 4 - 5 - Collect a WebVTT timestamp. If that fails, then abort and return failure. Otherwise, let cue's text track cue start time be the collected time.
if (!collectTimeStamp(input, m_currentStartTime))
return BadCue;
input.skipWhile<isASpace>();
// Steps 6 - 9 - If the next three characters are not "-->", abort and return failure.
if (!input.scan("-->"))
return BadCue;
input.skipWhile<isASpace>();
// Steps 10 - 11 - Collect a WebVTT timestamp. If that fails, then abort and return failure. Otherwise, let cue's text track cue end time be the collected time.
if (!collectTimeStamp(input, m_currentEndTime))
return BadCue;
input.skipWhile<isASpace>();
// Step 12 - Parse the WebVTT settings for the cue (conducted in TextTrackCue).
m_currentSettings = input.restOfInputAsString();
return CueText;
}
bool WebVTTParser::collectTimeStamp(const String& line, double& timeStamp)
{
if (line.isEmpty())
return false;
VTTScanner input(line);
return collectTimeStamp(input, timeStamp);
}
void WebVTTParser::constructTreeFromToken(Document& document)
{
QualifiedName tagName(nullAtom, AtomicString(m_token.name()), xhtmlNamespaceURI);
// http://dev.w3.org/html5/webvtt/#webvtt-cue-text-dom-construction-rules
switch (m_token.type()) {
case WebVTTTokenTypes::Character: {
String content(m_token.characters()); // FIXME: This should be 8bit if possible.
RefPtr<Text> child = Text::create(document, content);
m_currentNode->parserAppendChild(child);
break;
}
case WebVTTTokenTypes::StartTag: {
RefPtr<WebVTTElement> child;
WebVTTNodeType nodeType = tokenToNodeType(m_token);
if (nodeType != WebVTTNodeTypeNone)
child = WebVTTElement::create(nodeType, &document);
if (child) {
if (m_token.classes().size() > 0)
child->setAttribute(classAttr, AtomicString(m_token.classes()));
if (child->webVTTNodeType() == WebVTTNodeTypeVoice)
child->setAttribute(WebVTTElement::voiceAttributeName(), AtomicString(m_token.annotation()));
else if (child->webVTTNodeType() == WebVTTNodeTypeLanguage) {
m_languageStack.append(AtomicString(m_token.annotation()));
child->setAttribute(WebVTTElement::langAttributeName(), m_languageStack.last());
}
if (!m_languageStack.isEmpty())
child->setLanguage(m_languageStack.last());
m_currentNode->parserAppendChild(child);
m_currentNode = child;
}
break;
}
case WebVTTTokenTypes::EndTag: {
WebVTTNodeType nodeType = tokenToNodeType(m_token);
if (nodeType != WebVTTNodeTypeNone) {
if (nodeType == WebVTTNodeTypeLanguage && m_currentNode->isWebVTTElement() && toWebVTTElement(m_currentNode.get())->webVTTNodeType() == WebVTTNodeTypeLanguage)
m_languageStack.removeLast();
if (m_currentNode->parentNode())
m_currentNode = m_currentNode->parentNode();
}
break;
}
case WebVTTTokenTypes::TimestampTag: {
unsigned position = 0;
String charactersString(StringImpl::create8BitIfPossible(m_token.characters()));
double time = collectTimeStamp(charactersString, &position);
if (time != malformedTime)
m_currentNode->parserAppendChild(ProcessingInstruction::create(document, "timestamp", charactersString));
break;
}
default:
break;
}
m_token.clear();
}
void WebVTTParser::constructTreeFromToken(Document* document)
{
AtomicString tokenTagName(m_token.name().data(), m_token.name().size());
QualifiedName tagName(nullAtom, tokenTagName, xhtmlNamespaceURI);
switch (m_token.type()) {
case WebVTTTokenTypes::Character: {
String content(m_token.characters().data(), m_token.characters().size());
RefPtr<Text> child = Text::create(document, content);
m_currentNode->parserAddChild(child);
break;
}
case WebVTTTokenTypes::StartTag: {
RefPtr<HTMLElement> child;
if (isRecognizedTag(tokenTagName))
child = HTMLElement::create(tagName, document);
else if (m_token.name().size() == 1 && m_token.name()[0] == 'c')
child = HTMLElement::create(spanTag, document);
else if (m_token.name().size() == 1 && m_token.name()[0] == 'v')
child = HTMLElement::create(qTag, document);
if (child) {
if (m_token.classes().size() > 0) {
RefPtr<NamedNodeMap> attributeMap = NamedNodeMap::create();
attributeMap->addAttribute(Attribute::createMapped(classAttr, AtomicString(m_token.classes().data(), m_token.classes().size())));
child->setAttributeMap(attributeMap.release());
}
if (child->hasTagName(qTag))
child->setAttribute(titleAttr, String(m_token.annotation().data(), m_token.annotation().size()));
m_currentNode->parserAddChild(child);
m_currentNode = child;
}
break;
}
case WebVTTTokenTypes::EndTag:
if (isRecognizedTag(tokenTagName)
|| (m_token.name().size() == 1 && m_token.name()[0] == 'c')
|| (m_token.name().size() == 1 && m_token.name()[0] == 'v')) {
if (m_currentNode->parentNode())
m_currentNode = m_currentNode->parentNode();
}
break;
case WebVTTTokenTypes::TimestampTag: {
unsigned position = 0;
double time = collectTimeStamp(m_token.characters().data(), &position);
if (time != malformedTime)
m_currentNode->parserAddChild(ProcessingInstruction::create(document, "timestamp", String(m_token.characters().data(), m_token.characters().size())));
break;
}
default:
break;
}
m_token.clear();
}
bool VTTParser::collectTimeStamp(const String& line, double& timeStamp)
{
VTTScanner input(line);
return collectTimeStamp(input, timeStamp);
}
void WebVTTParser::constructTreeFromToken(Document* document)
{
AtomicString tokenTagName(m_token.name().data(), m_token.name().size());
QualifiedName tagName(nullAtom, tokenTagName, xhtmlNamespaceURI);
// http://dev.w3.org/html5/webvtt/#webvtt-cue-text-dom-construction-rules
switch (m_token.type()) {
case WebVTTTokenTypes::Character: {
String content(m_token.characters().data(), m_token.characters().size());
RefPtr<Text> child = Text::create(document, content);
m_currentNode->parserAppendChild(child);
break;
}
case WebVTTTokenTypes::StartTag: {
RefPtr<WebVTTElement> child;
if (isRecognizedTag(tokenTagName))
child = WebVTTElement::create(tagName, document);
else if (m_token.name().size() == 1 && m_token.name()[0] == 'c')
child = WebVTTElement::create(TextTrackCue::classElementTagName(), document);
else if (m_token.name().size() == 1 && m_token.name()[0] == 'v')
child = WebVTTElement::create(TextTrackCue::voiceElementTagName(), document);
else if (isLangToken(m_token))
child = WebVTTElement::create(TextTrackCue::langElementTagName(), document);
if (child) {
if (m_token.classes().size() > 0)
child->setAttribute(classAttr, AtomicString(m_token.classes().data(), m_token.classes().size()));
if (child->hasTagName(TextTrackCue::voiceElementTagName()))
child->setAttribute(TextTrackCue::voiceAttributeName(), AtomicString(m_token.annotation().data(), m_token.annotation().size()));
if (child->hasTagName(TextTrackCue::langElementTagName()))
m_languageStack.append(AtomicString(m_token.annotation().data(), m_token.annotation().size()));
if (!m_languageStack.isEmpty())
child->setAttribute(TextTrackCue::langAttributeName(), m_languageStack.last());
m_currentNode->parserAppendChild(child);
m_currentNode = child;
}
break;
}
case WebVTTTokenTypes::EndTag:
if (isRecognizedTag(tokenTagName)
|| (m_token.name().size() == 1 && m_token.name()[0] == 'c')
|| (m_token.name().size() == 1 && m_token.name()[0] == 'v')) {
if (m_currentNode->parentNode())
m_currentNode = m_currentNode->parentNode();
}
if (isLangToken(m_token)) {
if (m_currentNode->hasTagName(TextTrackCue::langElementTagName()))
m_languageStack.removeLast();
if (m_currentNode->parentNode())
m_currentNode = m_currentNode->parentNode();
}
break;
case WebVTTTokenTypes::TimestampTag: {
unsigned position = 0;
double time = collectTimeStamp(m_token.characters().data(), &position);
if (time != malformedTime)
m_currentNode->parserAppendChild(ProcessingInstruction::create(document, "timestamp", String(m_token.characters().data(), m_token.characters().size())));
break;
}
default:
break;
}
m_token.clear();
}
