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<?php |
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// defined('XOOPS_ROOT_PATH') || exit('XOOPS root path not defined'); |
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/** |
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* This file contains the keyhighlighter class that highlight the chosen keyword in the current output buffer. |
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* |
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* @package keyhighlighter |
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*/ |
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/** |
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* keyhighlighter class |
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* |
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* This class highlight the chosen keywords in the current output buffer |
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* |
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* @package keyhighlighter |
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* @author Setec Astronomy |
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* @abstract Highlight specific keywords. |
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* @copyright 2004 |
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* @example sample.php A sample code. |
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* @link http://setecastronomy.stufftoread.com |
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*/ |
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class keyhighlighter |
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{ |
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/** |
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* @access private |
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*/ |
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public $preg_keywords = ''; |
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/** |
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* @access private |
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*/ |
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public $keywords = ''; |
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/** |
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* @access private |
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*/ |
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public $singlewords = false; |
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/** |
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* @access private |
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*/ |
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public $replace_callback = null; |
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public $content; |
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/** |
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* Main constructor |
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* |
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* This is the main constructor of keyhighlighter class. <br /> |
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* It's the only public method of the class. |
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* |
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* @param string $keywords the keywords you want to highlight |
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* @param boolean $singlewords specify if it has to highlight also the single words. |
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* @param callback $replace_callback a custom callback for keyword highlight. |
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* <code> |
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* <?php |
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* require ('keyhighlighter.class.php'); |
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* |
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* function my_highlighter ($matches) { |
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* return '<span style="font-weight: bolder; color: #FF0000;">' . $matches[0] . '</span>'; |
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* } |
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* |
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* new keyhighlighter ('W3C', false, 'my_highlighter'); |
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* readfile ('http://www.w3c.org/'); |
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* ?> |
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* </code> |
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*/ |
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// public function __construct () |
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public function __construct($keywords, $singlewords = false, $replace_callback = null) |
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{ |
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$this->keywords = $keywords; |
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$this->singlewords = $singlewords; |
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$this->replace_callback = $replace_callback; |
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} |
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/** |
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* @access private |
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* @param $replace_matches |
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* @return mixed |
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*/ |
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public function replace($replace_matches) |
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{ |
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$patterns = array(); |
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if ($this->singlewords) { |
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$keywords = explode(' ', $this->preg_keywords); |
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foreach ($keywords as $keyword) { |
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$patterns[] = '/(?' . '>' . $keyword . '+)/si'; |
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} |
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} else { |
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$patterns[] = '/(?' . '>' . $this->preg_keywords . '+)/si'; |
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} |
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$result = $replace_matches[0]; |
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foreach ($patterns as $pattern) { |
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if (!is_null($this->replace_callback)) { |
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$result = preg_replace_callback($pattern, $this->replace_callback, $result); |
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} else { |
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$result = preg_replace($pattern, '<span class="highlightedkey">\\0</span>', $result); |
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} |
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} |
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return $result; |
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} |
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/** |
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* @access private |
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* @param $buffer |
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* @return mixed|string |
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*/ |
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public function highlight($buffer) |
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{ |
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$buffer = '>' . $buffer . '<'; |
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$this->preg_keywords = preg_replace('/[^\w ]/si', '', $this->keywords); |
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$buffer = preg_replace_callback("/(\>(((?" . ">[^><]+)|(?R))*)\<)/is", array(&$this, 'replace'), $buffer); |
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$buffer = xoops_substr($buffer, 1, -1); |
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return $buffer; |
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} |
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} |
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XoopsModules25x /
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Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it.
The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production.
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