public function filterString($string, array $rendererStates)
{
$isString = true;
if (is_array($string)) {
// array is our way of marking tag originals prepend/append text
$isString = false;
$string = reset($string);
}
if ($isString) {
// checks if the string is an URI of some kind
$isString = !Zend_Uri::check($string);
}
if ($isString) {
// checks if the parent tag has some strange requirements
$tagDataStack = $rendererStates['tagDataStack'];
$lastTagDataStack = array_pop($tagDataStack);
if ($lastTagDataStack['tag'] === 'hashtag') {
// well, this is a hashtag already...
$isString = false;
} else {
$parentTagInfo = $this->_parent__getTagRule($lastTagDataStack['tag']);
if (!empty($parentTagInfo['plainChildren'])) {
// parent tag asks for plain children, we should do nothing
$isString = false;
} elseif (!empty($parentTagInfo['stopSmilies']) or !empty($parentTagInfo['stopLineBreakConversion'])) {
// parent tag asks for some functionalities disabled, we should disable ourself
// too
$isString = false;
}
}
}
if ($isString) {
$offset = 0;
while (true) {
$pos = utf8_strpos($string, '#', $offset);
if ($pos === false) {
break;
}
$offset = $pos + 1;
if ($pos > 0) {
$beforeTagText = utf8_substr($string, $pos - 1, 1);
if (!preg_match(Tinhte_XenTag_Integration::REGEX_VALID_CHARACTER_AROUND, $beforeTagText)) {
// the before character of tag text is not a valid character, dismiss the found
// tag text
continue;
}
}
$stringForPregMatch = utf8_substr($string, $pos + 1);
if (preg_match('/[^a-zA-Z0-9]/', $stringForPregMatch, $matches, PREG_OFFSET_CAPTURE)) {
$nonTagTextPos = $matches[0][1];
} else {
// get all of the remaining characters
$nonTagTextPos = utf8_strlen($stringForPregMatch);
}
$nonTagTextPos += $pos + 1;
$tagText = utf8_trim(utf8_substr($string, $pos + 1, $nonTagTextPos - 1 - $pos));
if (utf8_strlen($tagText) < Tinhte_XenTag_Option::get('tagMinLength')) {
// too short
continue;
}
$afterTagText = utf8_substr($string, $nonTagTextPos, 1);
if (!empty($afterTagText)) {
if (!preg_match(Tinhte_XenTag_Integration::REGEX_VALID_CHARACTER_AROUND, $afterTagText)) {
// the after character of tag text is not a valid character, dismiss the found
// tag text
$tagText = '';
}
}
if (!empty($tagText)) {
$this->_Tinhte_XenTag_autoHashtagTexts[Tinhte_XenTag_Helper::getSafeTagTextForSearch($tagText)] = $tagText;
// add bb code wrapping
$replacement = sprintf('[HASHTAG]#%s[/HASHTAG]', $tagText);
$string = utf8_substr_replace($string, $replacement, $pos, $nonTagTextPos - $pos);
$pos += utf8_strlen($replacement) - 1;
}
$offset = $pos + 1;
}
}
return parent::filterString($string, $rendererStates);
}
