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->getFirstNonSpaceCharacter() !== 'A' || $cursor->getCharacter($cursor->getFirstNonSpacePosition() + 1) !== '>') {
return false;
}
$cursor->advanceToFirstNonSpace();
if ($cursor->peek() === '>') {
$cursor->advanceBy(2);
if ($cursor->getCharacter() === ' ') {
$cursor->advance();
}
}
$context->addBlock(new Aside());
return true;
}
public function parse(ContextInterface $context, Cursor $cursor)
{
$inlineParserContext = new InlineParserContext($cursor);
while (($character = $cursor->getCharacter()) !== null) {
if ($matchingParsers = $this->environment->getInlineParsersForCharacter($character)) {
foreach ($matchingParsers as $parser) {
if ($parser->parse($context, $inlineParserContext)) {
continue 2;
}
}
}
// We reach here if none of the parsers can handle the input
// Attempt to match multiple non-special characters at once
$text = $cursor->match($this->environment->getInlineParserCharacterRegex());
// This might fail if we're currently at a special character which wasn't parsed; if so, just add that character
if ($text === null) {
$cursor->advance();
$text = $character;
}
$lastInline = $inlineParserContext->getInlines()->last();
if ($lastInline instanceof Text && !isset($lastInline->data['delim'])) {
$lastInline->append($text);
} else {
$inlineParserContext->getInlines()->add(new Text($text));
}
}
foreach ($this->environment->getInlineProcessors() as $inlineProcessor) {
$inlineProcessor->processInlines($inlineParserContext->getInlines(), $inlineParserContext->getDelimiterStack());
}
return $inlineParserContext->getInlines();
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return bool
*/
public function parse(ContextInterface $context, Cursor $cursor)
{
if (!in_array($cursor->getFirstNonSpaceCharacter(), IconBlock::getIconBlockTypes()) || $cursor->getCharacter($cursor->getFirstNonSpacePosition() + 1) !== '>') {
return false;
}
$type = $cursor->getFirstNonSpaceCharacter();
$cursor->advanceToFirstNonSpace();
if ($cursor->peek() === '>') {
$cursor->advanceBy(2);
if ($cursor->getCharacter() === ' ') {
$cursor->advance();
}
}
$context->addBlock(new IconBlock($type));
return true;
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return bool
*/
protected function parseReferences(ContextInterface $context, Cursor $cursor)
{
$referenceFound = false;
while ($cursor->getCharacter() === '[' && $context->getReferenceParser()->parse($cursor)) {
$this->finalStringContents = $cursor->getRemainder();
$referenceFound = true;
}
return $referenceFound;
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return ArrayCollection
*/
public function parse(ContextInterface $context, Cursor $cursor)
{
$inlineParserContext = new InlineParserContext($cursor);
while (($character = $cursor->getCharacter()) !== null) {
if (!$this->parseCharacter($character, $context, $inlineParserContext)) {
$this->addPlainText($character, $inlineParserContext);
}
}
$this->processInlines($inlineParserContext);
return $inlineParserContext->getInlines();
}
public function matchesNextLine(Cursor $cursor)
{
if ($cursor->getIndent() <= 3 && $cursor->getFirstNonSpaceCharacter() === '>') {
$cursor->advanceToFirstNonSpace();
$cursor->advance();
if ($cursor->getCharacter() === ' ') {
$cursor->advance();
}
return true;
}
return false;
}
/**
* @param ContextInterface $context
* @param Cursor $cursor
*
* @return bool
*/
public function parse(ContextInterface $context, Cursor $cursor)
{
if ($cursor->getFirstNonSpaceCharacter() !== '>') {
return false;
}
$cursor->advanceToFirstNonSpace();
$cursor->advance();
if ($cursor->getCharacter() === ' ') {
$cursor->advance();
}
$context->addBlock(new BlockQuote());
return true;
}
public function matchesNextLine(Cursor $cursor)
{
if ($cursor->getIndent() <= 3 && in_array($cursor->getFirstNonSpaceCharacter(), static::getIconBlockTypes())) {
$cursor->advanceToFirstNonSpace();
if ($cursor->peek() === '>') {
$cursor->advanceBy(2);
if ($cursor->getCharacter() === ' ') {
$cursor->advance();
}
return true;
}
}
return false;
}
/**
* @param Cursor $cursor
* @param int $markerLength
*
* @return int
*/
private function calculateListMarkerPadding(Cursor $cursor, $markerLength)
{
$start = $cursor->saveState();
$spacesStartCol = $cursor->getColumn();
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;
}
return $markerLength + $spacesAfterMarker;
}
/**
* @param Cursor $cursor
* @param ReferenceMap $referenceMap
* @param Delimiter $opener
* @param int $startPos
*
* @return array|bool
*/
protected function tryParseLink(Cursor $cursor, ReferenceMap $referenceMap, Delimiter $opener, $startPos)
{
// Check to see if we have a link/image
// Inline link?
if ($cursor->getCharacter() == '(') {
if ($result = $this->tryParseInlineLinkAndTitle($cursor)) {
return $result;
}
} elseif ($link = $this->tryParseReference($cursor, $referenceMap, $opener, $startPos)) {
return ['url' => $link->getDestination(), 'title' => $link->getTitle()];
}
return false;
}
/**
* @param Cursor $cursor
*
* @return array|bool
*/
protected function tryParseInlineLinkAndTitle(Cursor $cursor)
{
if ($cursor->getCharacter() !== '(') {
return false;
}
$previousState = $cursor->saveState();
$cursor->advance();
$cursor->advanceToFirstNonSpace();
if (($dest = LinkParserHelper::parseLinkDestination($cursor)) === null) {
$cursor->restoreState($previousState);
return false;
}
$cursor->advanceToFirstNonSpace();
$title = null;
// make sure there's a space before the title:
if (preg_match(RegexHelper::REGEX_WHITESPACE_CHAR, $cursor->peek(-1))) {
$title = LinkParserHelper::parseLinkTitle($cursor) ?: '';
}
$cursor->advanceToFirstNonSpace();
if ($cursor->match('/^\\)/') === null) {
$cursor->restoreState($previousState);
return false;
}
return ['url' => $dest, 'title' => $title];
}
