/**
* Build Teasercontent
*
* @param string $content The whole resultcontent
* @return string The cutted recultcontent
*/
public function buildTeaserContent($content)
{
if (is_array($this->pObj->swords) && count($this->pObj->swords)) {
$amountOfSearchWords = count($this->pObj->swords);
$content = strip_tags($content);
// with each new searchword and all the croppings here the teaser for each word will become too small/short
// I decided to add 20 additional letters for each searchword. It looks much better and is more readable
$charsForEachSearchWord = ceil($this->conf['resultChars'] / $amountOfSearchWords) + 20;
$charsBeforeAfterSearchWord = ceil($charsForEachSearchWord / 2);
$aSearchWordWasFound = false;
$isSearchWordAtTheBeginning = false;
foreach ($this->pObj->swords as $word) {
$word = ' ' . $word;
// our searchengine searches for wordbeginnings
$pos = stripos($content, $word);
if ($pos === false) {
// if the word was not found it could be within brakets => (searchWord)
// so give it a second try
$pos = stripos($content, trim($word));
if ($pos === false) {
continue;
}
}
$aSearchWordWasFound = true;
// if searchword is the first word
if ($pos === 0) {
$isSearchWordAtTheBeginning = true;
}
// find search starting point
$startPos = $pos - $charsBeforeAfterSearchWord;
if ($startPos < 0) {
$startPos = 0;
}
// crop some words behind searchword
$partWithSearchWord = substr($content, $startPos);
$temp = $this->cObj->crop($partWithSearchWord, $charsForEachSearchWord . '|...|1');
// crop some words before searchword
// after last cropping our text is too short now. So we have to find a new cutting position
$startPos > 10 ? $length = strlen($temp) - 10 : ($length = strlen($temp));
$teaserArray[] = $this->cObj->crop($temp, '-' . $length . '||1');
}
// When the searchword was found in title but not in content the teaser is empty
// in that case we have to get the first x letters without containing any searchword
if ($aSearchWordWasFound === false) {
$teaser = $this->cObj->crop($content, $this->conf['resultChars'] . '||1');
} elseif ($isSearchWordAtTheBeginning === true) {
$teaser = implode(' ', $teaserArray);
} else {
$teaser = '...' . implode(' ', $teaserArray);
}
// highlight hits?
if ($this->conf['highlightSword']) {
$teaser = $this->highlightArrayOfWordsInContent($this->pObj->swords, $teaser);
}
return $teaser;
} else {
return $this->cObj->crop($content, $this->conf['resultChars'] . '|...|1');
}
}
/**
* Render the cropped text
*
* @param integer $maxCharacters Place where to truncate the string
* @param string $append What to append, if truncation happened
* @param boolean $respectBoundaries If TRUE and division is in the middle of a word, the remains of that word is removed.
* @param boolean $respectHtml If TRUE the cropped string will respect HTML tags and entities. Technically that means, that cropHTML() is called rather than crop()
* @return string cropped text
* @author Andreas Pattynama <*****@*****.**>
* @author Sebastian Kurfürst <*****@*****.**>
* @author Bastian Waidelich <*****@*****.**>
* @author Felix Oertel <*****@*****.**>
*/
public function render($maxCharacters, $append = '...', $respectWordBoundaries = TRUE, $respectHtml = TRUE)
{
$stringToTruncate = $this->renderChildren();
if (TYPO3_MODE === 'BE') {
$this->simulateFrontendEnvironment();
}
if ($respectHtml) {
$content = $this->contentObject->cropHTML($stringToTruncate, $maxCharacters . '|' . $append . '|' . $respectWordBoundaries);
} else {
$content = $this->contentObject->crop($stringToTruncate, $maxCharacters . '|' . $append . '|' . $respectWordBoundaries);
}
if (TYPO3_MODE === 'BE') {
$this->resetFrontendEnvironment();
}
return $content;
}
/**
* Render the cropped text
*
* @param integer $maxCharacters Place where to truncate the string
* @param string $append What to append, if truncation happened
* @param boolean $respectBoundaries If TRUE and division is in the middle of a word, the remains of that word is removed. This is currently ignored in backend mode!
* @return string cropped text
* @author Andreas Pattynama <*****@*****.**>
* @author Sebastian Kurfürst <*****@*****.**>
* @author Bastian Waidelich <*****@*****.**>
* @author Felix Oertel <*****@*****.**>
*/
public function render($maxCharacters, $append = '...', $respectWordBoundaries = TRUE)
{
$stringToTruncate = $this->renderChildren();
if (TYPO3_MODE === 'BE') {
if (strlen($stringToTruncate) > $maxCharacters) {
$stringToTruncate = substr($stringToTruncate, 0, $maxCharacters - strlen($append)) . $append;
}
return $stringToTruncate;
} else {
if (strip_tags($stringToTruncate) != $stringToTruncate) {
return $this->contentObject->cropHTML($stringToTruncate, $maxCharacters . '|' . $append . '|' . $respectWordBoundaries);
} else {
return $this->contentObject->crop($stringToTruncate, $maxCharacters . '|' . $append . '|' . $respectWordBoundaries);
}
}
}
/**
* Highlighting of terms within a text
*
* @param string $text Text
* @param string|\Zend_Search_Lucene_Search_Query $search Terms to be highlighted (string or lucene search query)
* @param int $crop Max. number of characters length
* @param string $append Suffix in case of text being cropped at the end
* @param string $prepend Prefix in case of text being cropped at the beginning
* @param string $field Lucene document field to be used (if the search terms have to be found retroactively)
* @return string Text with highlighting
* @see http://www.mail-archive.com/fw-general@lists.zend.com/msg09013.html
*/
public function render($text = null, $search = null, $crop = null, $append = ' ...', $prepend = ' ... ', $field = 'bodytext')
{
$text = trim(strlen(trim($text)) ? $text : $this->renderChildren());
$terms = array();
// If there is a reasonable text given
if (strlen($text)) {
// If a list with search terms have been given ...
if (is_array($search)) {
$terms = $search;
usort($terms, array($this, 'sortByLengthDesc'));
// Else: If query hits have been given ...
} elseif ($search instanceof \Tollwerk\TwLucenesearch\Domain\Model\QueryHits) {
$terms = (array) $search->getHighlight($field);
usort($terms, array($this, 'sortByLengthDesc'));
// Else: If a lucene search query or a literal search term has been given
} elseif ($search instanceof \Zend_Search_Lucene_Search_Query || strlen($search)) {
// Instanciation of the lucene index service
/* @var $indexerService \Tollwerk\TwLucenesearch\Service\Lucene */
$indexerService = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstanceService('index', 'lucene');
if ($indexerService instanceof \TYPO3\CMS\Core\Service\AbstractService) {
// Converting search term to lucene search query if necessary
if (!$search instanceof \Zend_Search_Lucene_Search_Query) {
$search = $indexerService->query($search);
}
// If there is a valid lucene search query available
if ($search instanceof \Zend_Search_Lucene_Search_Query) {
$searchHash = md5("{$search}");
if (!array_key_exists($searchHash, self::$_queryTermCache)) {
self::$_queryTermCache[$searchHash] = array();
foreach ($indexerService->getQueryTerms($search) as $termField => $fieldTerms) {
usort($fieldTerms, array($this, 'sortByLengthDesc'));
self::$_queryTermCache[$searchHash][$termField] = $fieldTerms;
}
}
$terms = self::$_queryTermCache[$searchHash];
$field = trim($field);
$terms = strlen($field) && array_key_exists($field, $terms) ? $terms[$field] : array();
}
}
}
}
// Check if the text has to be cropped ...
$crop = $crop !== null && intval($crop) && strlen($text) > $crop ? intval($crop) : false;
// If the text is more than 33% too long and highlighting has to be applied: Cropping also at the beginning of the text
if ($crop && strlen($text) / $crop > 1.5 && count($terms)) {
// Find the first highlighting in the text ...
$firstHighlight = $this->firstMatch($terms, $text);
// If there is at least one highlighting ...
if ($firstHighlight !== false) {
$beforeHighlight = strrev(trim(substr($text, 0, $firstHighlight)));
// Keep the last 3 words before the highlighting ...
$words = preg_split("%\\s+%", $beforeHighlight, 4);
if (count($words) > 3) {
$beforeHighlight = strrev(implode(' ', array_slice($words, 0, 3)));
$text = $prepend . $beforeHighlight . ' ' . substr($text, $firstHighlight);
}
}
}
// If there are search terms to be highlighted in the text ...
if (count($terms)) {
$text = $this->highlight($terms, $text, $crop);
}
// If the text has to be cropped ...
if ($crop) {
if (TYPO3_MODE === 'BE') {
$this->simulateFrontendEnvironment();
}
$respectHtml = true;
$text = $respectHtml ? $this->contentObject->cropHTML($text, $crop . '|' . $append . '|1') : $this->contentObject->crop($text, $crop . '|' . $append . '|1');
if (TYPO3_MODE === 'BE') {
$this->resetFrontendEnvironment();
}
}
return $text;
}
