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<?php
/**
*
* @package phpBB3
* @copyright (c) 2013 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
class phpbb_template_twig_lexer extends Twig_Lexer
{
public function tokenize($code, $filename = null)
{
$valid_starting_tokens = array(
'BEGIN',
'BEGINELSE',
'END',
'IF',
'ELSE',
'ELSEIF',
'ENDIF',
'DEFINE',
'DEFINE',
'UNDEFINE',
'ENDDEFINE',
/*'INCLUDE',
'INCLUDEPHP',*/
'INCLUDEJS',
'PHP',
'ENDPHP',
'EVENT',
);
// Replace <!-- INCLUDE blah.html --> with {% include 'blah.html' %}
$code = preg_replace('#<!-- INCLUDE(PHP)? (.*?) -->#', "{% INCLUDE$1 '$2' %}", $code);
// This strips the $ inside of a tag directly after the token, which was used in <!-- DEFINE $NAME
$code = preg_replace('#<!-- DEFINE \$(.*)-->#', '<!-- DEFINE $1-->', $code);
// This strips the . or $ inside of a tag directly before a variable name, which was used in <!-- IF .blah
$code = preg_replace_callback('#<!-- IF((.*)[\s][\$|\.]([^\s]+)(.*))-->#', array($this, 'tag_if_cleanup'), $code);
// Replace all of our starting tokens, <!-- TOKEN --> with Twig style, {% TOKEN %}
// This also strips outer parenthesis, <!-- IF (blah) --> becomes <!-- IF blah -->
$code = preg_replace('#<!-- (' . implode('|', $valid_starting_tokens) . ')(?: (.*?) ?)?-->#', '{% $1 $2 %}', $code);
// Replace all of our variables, {VARNAME} or {$VARNAME}, with Twig style, {{ VARNAME }}
$code = preg_replace('#{\$?([a-zA-Z0-9_\.]+)}#', '{{ $1 }}', $code);
return parent::tokenize($code, $filename);
}
/**
* preg_replace_callback to clean up IF statements
*
* This strips the . or $ inside of a tag directly before a variable name.
* Was used in <!-- IF .blah or <!-- IF $BLAH
*
* @param mixed $matches
*/
protected function tag_if_cleanup($matches)
{
return '<!-- IF ' . preg_replace('#\s[\.|\$]([a-zA-Z_0-9]+)#', ' $1', $matches[1]) . ' -->';
}
}
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