/**
* Assumes mbstring internal encoding is set to UTF-8
* Wrapper around mb_strrpos
* Find position of last occurrence of a char in a string
* @param string haystack
* @param string needle (you should validate this with utf8_is_valid)
* @param integer (optional) offset (from left)
* @return mixed integer position or FALSE on failure
* @package utf8
* @subpackage strings
*/
function utf8_strrpos($str, $search, $offset = false)
{
// Strip unvalid characters
$str = utf8_bad_strip($str);
if (!$offset) {
// Emulate behaviour of strrpos rather than raising warning
if (empty($str)) {
return false;
}
return mb_strrpos($str, $search);
} else {
if (!is_int($offset)) {
trigger_error('utf8_strrpos expects parameter 3 to be long', E_USER_WARNING);
return false;
}
$str = mb_substr($str, $offset);
if (($pos = mb_strrpos($str, $search)) !== false) {
return $pos + $offset;
}
return false;
}
}
/**
* Strips out any bad bytes from a UTF-8 string and returns the rest
* @param $str string input string
* @return string
*/
static function utf8_bad_strip($str)
{
require_once './lib/pkp/lib/phputf8/utils/bad.php';
return utf8_bad_strip($str);
}
/**
* Prepares and cleans the string
*
* @param string $string
* @param bool $clean_again
*
* @return mixed|string
*/
private function cleanString($string, $clean_again = false)
{
static $string_clean = false;
if ($string_clean === false or $clean_again == true) {
// Replace plugins with correct content
JPluginHelper::importPlugin('content');
$string = JHtml::_('content.prepare', $string, '');
// Convert quotes and decode HTML entities
$search = array(chr(145), chr(146), chr(147), chr(148), chr(151), ''');
$replace = array("'", "'", '"', '"', '-', "'", "'");
$string = html_entity_decode(str_replace($search, $replace, $string), ENT_COMPAT, 'UTF-8');
// Strip HTML tags and remove invisible chars
$string = preg_replace('@\\s+(\\r\\n|\\r|\\n|\\t)@', ' ', strip_tags($string));
// Exchange double quotes and remove white spaces for the description
$string = str_replace('"', "'", $string);
$string = preg_replace('@\\s+@', ' ', $string);
// Remove all bad UTF8 characters with the help of the UTF8 library
jimport('phputf8.utils.bad');
$string = utf8_bad_strip($string);
$string_clean = trim(htmlspecialchars($string));
}
return $string_clean;
}
function remove_bad_characters($array)
{
static $bad_utf8_chars;
if (!isset($bad_utf8_chars)) {
$bad_utf8_chars = array("̷" => '', "̸" => '', "ᅟ" => '', "ᅠ" => '', "" => '', "" => '', "" => '', "" => '', "" => '', "" => '', "" => '', "" => '', "" => '', "" => '', " " => '', " " => '', "" => '', "ㅤ" => '', "" => '', "ﾠ" => '', "" => '', "" => '', "" => '', "" => '', "�" => '', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ', " " => ' ');
}
if (is_array($array)) {
return array_map('remove_bad_characters', $array);
}
// Strip out any invalid characters
$array = utf8_bad_strip($array);
// Remove control characters
$array = preg_replace('%[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f]%', '', $array);
// Replace some "bad" characters
$array = str_replace(array_keys($bad_utf8_chars), array_values($bad_utf8_chars), $array);
return $array;
}
/**
* Strips out any bad bytes from a UTF-8 string and returns the rest
* @param $str string input string
* @return string
*/
function utf8_bad_strip($str)
{
require_once 'utils/bad.php';
return utf8_bad_strip($str);
}
