/**
*
*
* @file modifier.limit_ubburl.php
* @package plugins
* @author fengfei02@baidu.com
* @date 2012-11-05 10:51
*/
function smarty_modifier_limit_ubburl($string, $length, $limiturl = true)
{
$status = -1;
$logArr['smarty_modifier'] = "modifier_limit_ubburl";
$logArr['string'] = urlencode($string);
$logArr['length'] = $length;
if (strlen($string) == 0) {
$result = $string;
return $result;
}
$outstr = $string;
$min_pos = PHP_INT_MAX;
$max_pos = 0;
$pos_hash = array();
// not greedy matching
preg_match_all("/\\[url.*\\].*\\[\\/url\\]/U", $string, $out, PREG_PATTERN_ORDER);
foreach ($out[0] as $s) {
$pos = strpos($outstr, $s);
$p1 = strpos($s, ']');
$p2 = strpos($s, '[/url]');
$mid_str = substr($s, $p1 + 1, $p2 - $p1 - 1);
$url_str = substr($s, 0, $p1 + 1);
$pos_hash[] = array('word' => $mid_str, 'url_str' => $url_str, 'pos' => $pos);
// not greedy matching
$outstr = preg_replace("/\\[url.*\\].*\\[\\/url\\]/U", $mid_str, $outstr, 1);
$min_pos = $pos < $min_pos ? $pos : $min_pos;
$max_pos = $pos > $max_pos ? $pos : $max_pos;
}
$result = hilight_limitlen($outstr, $length);
if (false === $result) {
$result = $string;
$logArr['result'] = $result;
CLog::warning("fail to call limitlen", $status, $logArr, 1);
return $result;
}
//there is no url tag
if (empty($pos_hash)) {
return $result;
}
//not limited
if (substr($result, -3) !== '...') {
return $string;
}
$result_len = strlen($result) - 3;
//limited from the first url
if ($result_len <= $min_pos) {
return $result;
}
$index = 0;
$result_arr = array();
foreach ($pos_hash as $key => $value) {
if ($result_len <= $value['pos']) {
$result_arr[] = substr($result, $index);
break;
} else {
if ($result_len > $value['pos'] && $result_len < $value['pos'] + strlen($value['word'])) {
$result_arr[] = substr($result, $index, $value['pos'] - $index);
if ($limiturl === false) {
$result_arr[] = $value['url_str'];
$result_arr[] = $value['word'];
$result_arr[] = '[/url]';
}
$result_arr[] = '...';
break;
} else {
$result_arr[] = substr($result, $index, $value['pos'] - $index);
$result_arr[] = $value['url_str'];
$result_arr[] = $value['word'];
$result_arr[] = '[/url]';
$index = $value['pos'] + strlen($value['word']);
}
}
}
if ($index >= $max_pos) {
$result_arr[] = substr($result, $index);
}
$result = implode('', $result_arr);
return $result;
}
function modifier_limitlen($string, $length)
{
if (strlen($string) == 0) {
$result = $string;
return $result;
}
$result = hilight_limitlen($string, $length);
if (false === $result) {
$result = $string;
return $result;
}
return $result;
}
