public static function parse(Cursor $cursor)
{
if (null === self::$regexp) {
$regex = RegexHelper::getInstance();
self::$regexp = sprintf('/^\\s*([.#][_a-z0-9-]+|%s%s)(?<!})\\s*/i', $regex->getPartialRegex(RegexHelper::ATTRIBUTENAME), $regex->getPartialRegex(RegexHelper::ATTRIBUTEVALUESPEC));
}
$state = $cursor->saveState();
$cursor->advanceToFirstNonSpace();
if ('{' !== $cursor->getCharacter()) {
$cursor->restoreState($state);
return [];
}
$cursor->advanceBy(1);
if (':' === $cursor->getCharacter()) {
$cursor->advanceBy(1);
}
$attributes = [];
while ($attribute = trim($cursor->match(self::$regexp))) {
if ('#' === $attribute[0]) {
$attributes['id'] = substr($attribute, 1);
continue;
}
if ('.' === $attribute[0]) {
$attributes['class'][] = substr($attribute, 1);
continue;
}
list($name, $value) = explode('=', $attribute, 2);
$first = $value[0];
$last = substr($value, -1);
if (('"' === $first && '"' === $last || "'" === $first && "'" === $last) && strlen($value) > 1) {
$value = substr($value, 1, -1);
}
if ('class' === strtolower(trim($name))) {
foreach (array_filter(explode(' ', trim($value))) as $class) {
$attributes['class'][] = $class;
}
} else {
$attributes[trim($name)] = trim($value);
}
}
if (0 === $cursor->advanceWhileMatches('}')) {
$cursor->restoreState($state);
return [];
}
if (isset($attributes['class'])) {
$attributes['class'] = implode(' ', $attributes['class']);
}
return $attributes;
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return bool
*/
public function parse(ContextInterface $context, Cursor $cursor)
{
if ($cursor->isIndented()) {
return false;
}
if ($cursor->getFirstNonSpaceCharacter() !== '<') {
return false;
}
$savedState = $cursor->saveState();
$cursor->advanceToFirstNonSpace();
$line = $cursor->getRemainder();
for ($blockType = 1; $blockType <= 7; $blockType++) {
$match = RegexHelper::matchAt(RegexHelper::getHtmlBlockOpenRegex($blockType), $line);
if ($match !== null && ($blockType < 7 || !$context->getContainer() instanceof Paragraph)) {
$cursor->restoreState($savedState);
$context->addBlock(new HtmlBlock($blockType));
$context->setBlocksParsed(true);
return true;
}
}
$cursor->restoreState($savedState);
return false;
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return bool
*/
public function parse(ContextInterface $context, Cursor $cursor)
{
$previousState = $cursor->saveState();
$indent = $cursor->advanceToFirstNonSpace();
$fence = $cursor->match('/^`{3,}(?!.*`)|^~{3,}(?!.*~)/');
if (!$fence) {
$cursor->restoreState($previousState);
return false;
}
// fenced code block
$fenceLength = strlen($fence);
$context->addBlock(new FencedCode($fenceLength, $fence[0], $indent));
return true;
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return bool
*/
public function parse(ContextInterface $context, Cursor $cursor)
{
if ($cursor->isIndented()) {
return false;
}
$previousState = $cursor->saveState();
$cursor->advanceToFirstNonSpace();
$fence = $cursor->match('/^\\[TOC\\]/');
if (is_null($fence)) {
$cursor->restoreState($previousState);
return false;
}
$context->addBlock(new TableOfContents());
return true;
}
/**
* @param Cursor $cursor
* @param int $markerLength
*
* @return int
*/
private function calculateListMarkerPadding(Cursor $cursor, $markerLength)
{
$start = $cursor->saveState();
$spacesStartCol = $cursor->getColumn();
while ($cursor->getColumn() - $spacesStartCol < 5) {
if (!$cursor->advanceBySpaceOrTab()) {
break;
}
}
$blankItem = $cursor->peek() === null;
$spacesAfterMarker = $cursor->getColumn() - $spacesStartCol;
if ($spacesAfterMarker >= 5 || $spacesAfterMarker < 1 || $blankItem) {
$cursor->restoreState($start);
$cursor->advanceBySpaceOrTab();
return $markerLength + 1;
}
return $markerLength + $spacesAfterMarker;
}
/**
* @return bool
*/
protected function cancel()
{
$this->cursor->restoreState($this->originalState);
return false;
}
/**
* @param Cursor $cursor
* @param int $markerLength
*
* @return int
*/
private function calculateListMarkerPadding(Cursor $cursor, $markerLength)
{
$start = $cursor->saveState();
$spacesStartCol = $cursor->getColumn();
$spacesStartOffset = $cursor->getPosition();
do {
$cursor->advanceBy(1, true);
$nextChar = $cursor->getCharacter();
} while ($cursor->getColumn() - $spacesStartCol < 5 && ($nextChar === ' ' || $nextChar === "\t"));
$blankItem = $cursor->peek() === null;
$spacesAfterMarker = $cursor->getColumn() - $spacesStartCol;
if ($spacesAfterMarker >= 5 || $spacesAfterMarker < 1 || $blankItem) {
$cursor->restoreState($start);
if ($cursor->peek() === ' ') {
$cursor->advanceBy(1, true);
}
return $markerLength + 1;
} else {
return $markerLength + $spacesAfterMarker;
}
}
