/**
* @param Text $text
*
* @return array
*/
protected function parseAttributes(Text $text)
{
$patterns = ['id' => '/^#([a-zA-Z0-9_-]+)/', 'class' => '/^\\.([a-zA-Z0-9_-]+)/', 'attr' => '/^\\[([^\\]]+)\\]/', 'ident' => '/^(.)/'];
$tokens = ['id' => [], 'class' => [], 'attr' => [], 'ident' => []];
while (!$text->isEmpty()) {
foreach ($patterns as $name => $pattern) {
if ($text->match($pattern, $matches)) {
$tokens[$name][] = $matches[1];
$text->setString(substr($text->getString(), strlen($matches[0])));
break;
}
}
}
$attributes = array();
if (count($tokens['id'])) {
$attributes['id'] = array_pop($tokens['id']);
}
if (count($tokens['class'])) {
$attributes['class'] = implode(' ', $tokens['class']);
}
if (count($tokens['attr'])) {
foreach ($tokens['attr'] as $raw) {
$items = explode(' ', $raw);
foreach ($items as $item) {
if (strpos($item, '=') !== false) {
list($key, $value) = explode('=', $item);
$attributes[$key] = trim($value, '"');
} else {
$attributes[$item] = $item;
}
}
}
}
return $attributes;
}
/**
* Handle reference-style links: [link text] [id]
*
* @param Text $text
* @param array $options
*/
public function processReferencedLink(Text $text, array $options = array())
{
if (!$text->contains('[')) {
return;
}
/** @noinspection PhpUnusedParameterInspection */
$text->replace('{
#( # wrap whole match in $1
\\[
(' . $this->getNestedBrackets() . ') # link text = $2
\\]
[ ]? # one optional space
(?:\\n[ ]*)? # one optional newline followed by spaces
\\[
(.*?) # id = $3
\\]
#)
}xs', function (Text $whole, Text $linkText, Text $id = null) use($options) {
if (is_null($id) || (string) $id == '') {
$id = new Text($linkText);
}
$id->lower();
if ($this->markdown->getUrlRegistry()->exists($id)) {
$url = new Text($this->markdown->getUrlRegistry()->get($id));
$url->escapeHtml();
$linkOptions = ['href' => $url->getString()];
if ($this->markdown->getTitleRegistry()->exists($id)) {
$title = new Text($this->markdown->getTitleRegistry()->get($id));
$linkOptions['title'] = $title->escapeHtml()->getString();
}
return $this->getRenderer()->renderLink($linkText->getString(), $linkOptions);
} else {
if ($options['strict']) {
throw new SyntaxError(sprintf('Unable to find id "%s" in Reference-style link', $id), $this, $whole, $this->markdown);
}
return $whole;
}
});
}
