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<?php
/**
* PHPTAL templating engine
*
* PHP Version 5
*
* @category HTML
* @package PHPTAL
* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
* @author Kornel Lesiński <kornel@aardvarkmedia.co.uk>
* @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
* @version SVN: $Id$
* @link http://phptal.org/
*/
/**
* Base class for all PHPTAL attributes.
*
* Attributes are first ordered by PHPTAL then called depending on their
* priority before and after the element printing.
*
* An attribute must implements start() and end().
*
* @package PHPTAL
* @subpackage Php
* @author Laurent Bedubourg <lbedubourg@motion-twin.com>
*/
abstract class PHPTAL_Php_Attribute
{
const ECHO_TEXT = 'text';
const ECHO_STRUCTURE = 'structure';
/** Attribute value specified by the element. */
protected $expression;
/** Element using this attribute (PHPTAL's counterpart of XML node) */
protected $phpelement;
/**
* Called before element printing.
*/
abstract function before(PHPTAL_Php_CodeWriter $codewriter);
/**
* Called after element printing.
*/
abstract function after(PHPTAL_Php_CodeWriter $codewriter);
function __construct(PHPTAL_Dom_Element $phpelement, $expression)
{
$this->expression = $expression;
$this->phpelement = $phpelement;
}
/**
* Remove structure|text keyword from expression and stores it for later
* doEcho() usage.
*
* $expression = 'stucture my/path';
* $expression = $this->extractEchoType($expression);
*
* ...
*
* $this->doEcho($code);
*/
protected function extractEchoType($expression)
{
$echoType = self::ECHO_TEXT;
$expression = trim($expression);
if (preg_match('/^(text|structure)\s+(.*?)$/ism', $expression, $m)) {
list(, $echoType, $expression) = $m;
}
$this->_echoType = strtolower($echoType);
return trim($expression);
}
protected function doEchoAttribute(PHPTAL_Php_CodeWriter $codewriter, $code)
{
if ($this->_echoType === self::ECHO_TEXT)
$codewriter->doEcho($code);
else
$codewriter->doEchoRaw($code);
}
protected function parseSetExpression($exp)
{
$exp = trim($exp);
// (dest) (value)
if (preg_match('/^([a-z0-9:\-_]+)\s+(.*?)$/si', $exp, $m)) {
return array($m[1], trim($m[2]));
}
// (dest)
return array($exp, null);
}
protected $_echoType = PHPTAL_Php_Attribute::ECHO_TEXT;
}
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