/**
* Helper function for BLOCKQUOTE body conversion.
*
* @param string $text HTML content
*/
protected function convertBlockquotes(&$text)
{
if (preg_match_all('/<\\/*blockquote[^>]*>/i', $text, $matches, PREG_OFFSET_CAPTURE)) {
// init
$start = 0;
$taglen = 0;
$level = 0;
$diff = 0;
// convert preg offsets from bytes to characters
foreach ($matches[0] as $index => $m) {
$matches[0][$index][1] = UTF8::strlen(substr($text, 0, $m[1]));
}
foreach ($matches[0] as $m) {
if ($m[0][0] == '<' && $m[0][1] == '/') {
$level--;
if ($level < 0) {
// malformed HTML: go to next blockquote
$level = 0;
} elseif ($level > 0) {
// skip inner blockquote
} else {
$end = $m[1];
$len = $end - $taglen - $start;
// get blockquote content
$body = UTF8::substr($text, $start + $taglen - $diff, $len);
// set text width
$pWidth = $this->options['width'];
if ($this->options['width'] > 0) {
$this->options['width'] -= 2;
}
// convert blockquote content
$this->converter($body);
// add citation markers
$body = preg_replace('/((^|\\n)>*)/', '\\1> ', UTF8::trim($body));
// create PRE block
$body = '<pre>' . UTF8::htmlspecialchars($body) . '</pre>';
// re-set text width
$this->options['width'] = $pWidth;
// replace content
$text = UTF8::substr($text, 0, $start - $diff) . $body . UTF8::substr($text, $end + UTF8::strlen($m[0]) - $diff);
$diff += $len + $taglen + UTF8::strlen($m[0]) - UTF8::strlen($body);
unset($body);
}
} else {
if ($level == 0) {
$start = $m[1];
$taglen = UTF8::strlen($m[0]);
}
$level++;
}
}
}
}
/**
* escape html
*
* @return Stringy
*/
public function escape()
{
$str = UTF8::htmlspecialchars($this->str, ENT_QUOTES | ENT_SUBSTITUTE, $this->encoding);
return static::create($str, $this->encoding);
}