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<?php |
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/* |
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You may not change or alter any portion of this comment or credits |
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of supporting developers from this source code or any supporting source code |
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which is considered copyrighted (c) material of the original comment or credit authors. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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namespace Xoops\Core\Text\Sanitizer\Extensions; |
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use Xoops\Core\Text\Sanitizer; |
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use Xoops\Core\Text\Sanitizer\FilterAbstract; |
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/** |
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* TextSanitizer filter - clean up HTML text |
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* |
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* @category Sanitizer |
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* @package Xoops\Core\Text |
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* @author Taiwen Jiang <[email protected]> |
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* @copyright 2000-2015 XOOPS Project (http://xoops.org) |
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* @license GNU GPL 2 (http://www.gnu.org/licenses/gpl-2.0.html) |
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* @link http://xoops.org |
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*/ |
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class Clickable extends FilterAbstract |
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{ |
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/** |
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* @var array default configuration values |
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*/ |
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protected static $defaultConfiguration = [ |
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'enabled' => true, |
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'truncate_length' => 60, |
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]; |
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/** |
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* Make and URL's in the text clickable links |
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* |
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* @param string $text text string to filter |
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* |
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* @return mixed |
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*/ |
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public function applyFilter($text) |
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{ |
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if (!$this->config['enabled']) { |
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return $text; |
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} |
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$valid_chars = "a-z0-9\/\-_+=.~!%@?#&;:$\|"; |
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$end_chars = "a-z0-9\/\-_+=~!%@?#&;:$\|"; |
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$pattern = "/(^|[^]_a-z0-9-=\"'\/])([a-z]+?):\/\/([{$valid_chars}]+[{$end_chars}])/i"; |
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$text = preg_replace_callback( |
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$pattern, |
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function ($match) { |
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return $match[1] . "<a href=\"$match[2]://$match[3]\" title=\"$match[2]://$match[3]\"" |
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. "rel=\"external\">$match[2]://".$this->truncate($match[3]).'</a>'; |
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}, |
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$text |
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); |
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$pattern = "/(^|[^]_a-z0-9-=\"'\/:\.])www\.((([a-zA-Z0-9\-]*\.){1,}){1}([a-zA-Z]{2,6}){1})((\/([a-zA-Z0-9\-\._\?\,\'\/\\+&%\$#\=~])*)*)/i"; |
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$text = preg_replace_callback( |
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$pattern, |
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function ($match) { |
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return $match[1] ."<a href=\"http://www.$match[2]$match[6]\" " |
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. "title=\"www.$match[2]$match[6]\" rel=\"external\">" . |
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$this->truncate('www.'.$match[2].$match[6]) .'</a>'; |
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}, |
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$text |
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); |
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$pattern = "/(^|[^]_a-z0-9-=\"'\/])ftp\.([a-z0-9\-]+)\.([{$valid_chars}]+[{$end_chars}])/i"; |
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$text = preg_replace_callback( |
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$pattern, |
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function ($match) { |
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return $match[1]."<a href=\"ftp://ftp.$match[2].$match[3]\" " |
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. "title=\"ftp.$match[2].$match[3]\" rel=\"external\">" |
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. $this->truncate('ftp.'.$match[2].$match[3]) .'</a>'; |
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}, |
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$text |
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); |
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$pattern = "/(^|[^]_a-z0-9-=\"'\/:\.])([-_a-z0-9\'+*$^&%=~!?{}]++(?:\.[-_a-z0-9\'+*$^&%=~!?{}]+)*+)@((?:(?![-.])[-a-z0-9.]+(?<![-.])\.[a-z]{2,6}|\d{1,3}(?:\.\d{1,3}){3})(?::\d++)?)/i"; |
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$text = preg_replace_callback( |
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$pattern, |
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function ($match) { |
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return $match[1]. "<a href=\"mailto:$match[2]@$match[3]\" title=\"$match[2]@$match[3]\">" |
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. $this->truncate($match[2] . "@" . $match[3]) . '</a>'; |
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}, |
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$text |
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); |
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return $text; |
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} |
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/** |
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* truncate string in context of |
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* |
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* @param string $text string to be truncated |
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* |
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* @return string |
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*/ |
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protected function truncate($text) |
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{ |
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$config = $this->config; |
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if (empty($text) || empty($config['truncate_length']) || mb_strlen($text) < $config['truncate_length']) { |
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return $text; |
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} |
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$len = (((mb_strlen($text) - $config['truncate_length']) - 5) / 2); |
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if ($len < 5) { |
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$ret = mb_substr($text, 0, $len) . ' ... ' . mb_substr($text, -$len); |
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} else { |
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$ret = mb_substr($text, 0, $config['truncate_length']); |
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} |
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return $ret; |
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} |
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} |
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XOOPS /
XoopsCore
