PEAR2_Text_Markdown › PEAR2_Text_Markdown-0.1.0/php/PEAR2/Text/Markdown/Plugin/AmpsAngles.php
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<?php
/**
*
* Span class to convert ampersands and less-than angle brackets to
* their HTML entity equivalents.
*
* @category Solar
*
* @package Markdown
*
* @author John Gruber <http://daringfireball.net/projects/markdown/>
*
* @author Michel Fortin <http://www.michelf.com/projects/php-markdown/>
*
* @author Paul M. Jones <pmjones@solarphp.com>
*
* @license http://opensource.org/licenses/bsd-license.php BSD
*
* @version $Id: AmpsAngles.php 3617 2009-02-16 19:47:30Z pmjones $
*
*/
namespace PEAR2\Text;
class Markdown_Plugin_AmpsAngles extends Markdown_Plugin
{
/**
*
* This is a span plugin.
*
* @var bool
*
*/
protected $_is_span = true;
/**
*
* Smart processing for encoding ampersands and left-angle brackets.
*
* Ampersand-encoding based entirely on Nat Irons's [Amputator MT][]
* plugin.
*
* [Amputator MT]: http://bumppo.net/projects/amputator/
*
* @param string $text The source text to be parsed.
*
* @return string The transformed XHTML.
*
*/
public function parse($text)
{
// encode ampersands
$text = preg_replace_callback(
'/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/',
array($this, '_processAmp'),
$text
);
// encode naked <'s
$text = preg_replace_callback(
'{<(?![a-z/?\$!])}i',
array($this, '_processLt'),
$text
);
return $text;
}
/**
*
* Callback to place tokenized ampersands.
*
* @param array $matches Matches from preg_replace_callback().
*
* @return string The replacement text.
*
*/
protected function _processAmp($matches)
{
return $this->_toHtmlToken('&');
}
/**
*
* Callback to place tokenized less-than symbols.
*
* @param array $matches Matches from preg_replace_callback().
*
* @return string The replacement text.
*
*/
protected function _processLt($matches)
{
return $this->_toHtmlToken('<');
}
}
EOF
