public static function highlight($text, $searchString, $class, $overhang = 0)
{
// parse string without accesnts and lowercase for searchstring
$stringArray = array();
$textArray = explode(" ", $text);
$retArray = array();
$pattern = "~{$searchString}~";
$string = strtolower(OLIVText::remove_accents((string) $text));
preg_match_all($pattern, $string, $matches, PREG_OFFSET_CAPTURE);
// split the string
$start = 0;
$offset = 0;
if ($matches) {
if (count($matches[0])) {
return $text;
//TODO solve the problem with the utf8 chars
/* foreach ($matches[0] as $match)
{
$delimitor = "";
// insert part from previous start
$length = $match[1] - $start;
if ($overhang)
{
if ($length > $overhang)
{
// text longer than 2 times the overhang
// cut away the rest
if ($length > 2*$overhang)
{
array_push($stringArray,$delimitor . substr((string)$text,$start,$overhang) . "... ");
$start = $match[1] - $overhang;
$length = $overhang;
$delimitor = " ...";
}
}
}
if ($length)
array_push($stringArray,$delimitor . substr((string)$text,$start,$length));
// insert hightlighted searchstring
$length = strlen($searchString);
$start = $match[1];
if ($length)
array_push($stringArray,"{span class='$class'}" . substr((string)$text,$start,$length) . "{/span}");
$start = $start + $length;
}*/
} else {
return FALSE;
}
// rest of text longer than overhang
// cut away the rest
/* $length = strlen($text) - $start;
if ($overhang)
{
if ($length > $overhang)
{
$length = $overhang;
$delimitor = "...";
}
}
array_push($stringArray,substr((string)$text,$start,$length) . $delimitor);
return implode("",$stringArray);*/
}
}
public function insertText($text, $url = "", $lang = "")
{
// remove punctuation marks in text
$text = preg_replace("![\\.\\,\\;\\:\\(\\)\\[\\]\\{\\}\\-\\_\\/]!", " ", strtolower($text));
// extract words
$wordArray = explode(" ", $text);
$wordArray = array_unique($wordArray);
foreach ($wordArray as $word) {
// $word = strtolower(Normalizer::normalize($word,Normalizer::FORM_C));
$word = strtolower($word);
//TODO replace all special characters with root
$specialChar = array("ä", "ö");
$replaceChar = array();
$word = OLIVText::remove_accents($word);
// $this->insertWord($word,$word);
$suffArray = $this->makeSuffArray($word);
foreach ($suffArray as $suffix) {
$this->insertWord($suffix, status::url() . ":" . $url . ":{$lang}:{$word}", $lang);
}
}
global $_INDEX;
//echoall($_INDEX);
// write index to disk
$path = session_path("");
$name = "index.idx";
if (file_exists($path)) {
$fh = fopen($path . $name, "w");
if ($fh) {
fwrite($fh, $_INDEX->asXML());
fclose($fh);
} else {
OLIVError::fire("index.php - no write permission");
}
} else {
OLIVError::fire("index.php - directory {$path} don't exist");
}
}