+<?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_extension extends Twig_Extension

+{

+ /** @var phpbb_template_context */

+ protected $context;

+

+ /** @var phpbb_user */

+ protected $user;

+

+ /**

+ * Constructor

+ *

+ * @param phpbb_template_context $context

+ * @param phpbb_user $user

+ * @return phpbb_template_twig_extension

+ */

+ public function __construct(phpbb_template_context $context, $user)

+ {

+ $this->context = $context;

+ $this->user = $user;

+ }

+

+ /**

+ * Get the name of this extension

+ *

+ * @return string

+ */

+ public function getName()

+ {

+ return 'phpbb';

+ }

+

+ /**

+ * Returns the token parser instance to add to the existing list.

+ *

+ * @return array An array of Twig_TokenParser instances

+ */

+ public function getTokenParsers()

+ {

+ return array(

+ new phpbb_template_twig_tokenparser_define,

+ new phpbb_template_twig_tokenparser_include,

+ new phpbb_template_twig_tokenparser_includejs,

+ new phpbb_template_twig_tokenparser_includecss,

+ new phpbb_template_twig_tokenparser_event,

+ new phpbb_template_twig_tokenparser_includephp,

+ new phpbb_template_twig_tokenparser_php,

+ );

+ }

+

+ /**

+ * Returns a list of filters to add to the existing list.

+ *

+ * @return array An array of filters

+ */

+ public function getFilters()

+ {

+ return array(

+ new Twig_SimpleFilter('subset', array($this, 'loop_subset'), array('needs_environment' => true)),

+ new Twig_SimpleFilter('addslashes', 'addslashes'),

+ );

+ }

+

+ /**

+ * Returns a list of global functions to add to the existing list.

+ *

+ * @return array An array of global functions

+ */

+ public function getFunctions()

+ {

+ return array(

+ new Twig_SimpleFunction('lang', array($this, 'lang')),

+ );

+ }

+

+ /**

+ * Returns a list of operators to add to the existing list.

+ *

+ * @return array An array of operators

+ */

+ public function getOperators()

+ {

+ return array(

+ array(

+ '!' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),

+ ),

+ array(

+ // precedence settings are copied from similar operators in Twig core extension

+ '||' => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ '&&' => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+

+ 'eq' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+

+ 'ne' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ 'neq' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ '<>' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+

+ '===' => array('precedence' => 20, 'class' => 'phpbb_template_twig_node_expression_binary_equalequal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ '!==' => array('precedence' => 20, 'class' => 'phpbb_template_twig_node_expression_binary_notequalequal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+

+ 'gt' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ 'gte' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ 'ge' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ 'lt' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ 'lte' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ 'le' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+

+ 'mod' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),

+ ),

+ );

+ }

+

+ /**

+ * Grabs a subset of a loop

+ *

+ * @param Twig_Environment $env A Twig_Environment instance

+ * @param mixed $item A variable

+ * @param integer $start Start of the subset

+ * @param integer $end End of the subset

+ * @param Boolean $preserveKeys Whether to preserve key or not (when the input is an array)

+ *

+ * @return mixed The sliced variable

+ */

+ function loop_subset(Twig_Environment $env, $item, $start, $end = null, $preserveKeys = false)

+ {

+ // We do almost the same thing as Twig's slice (array_slice), except when $end is positive

+ if ($end >= 1)

+ {

+ // When end is > 1, subset will end on the last item in an array with the specified $end

+ // This is different from slice in that it is the number we end on rather than the number

+ // of items to grab (length)

+

+ // Start must always be the actual starting number for this calculation (not negative)

+ $start = ($start < 0) ? sizeof($item) + $start : $start;

+ $end = $end - $start;

+ }

+

+ // We always include the last element (this was the past design)

+ $end = ($end == -1 || $end === null) ? null : $end + 1;

+

+ return twig_slice($env, $item, $start, $end, $preserveKeys);

+ }

+

+ /**

+ * Get output for a language variable (L_FOO, LA_FOO)

+ *

+ * This function checks to see if the language var was outputted to $context

+ * (e.g. in the ACP, L_TITLE)

+ * If not, we return the result of $user->lang()

+ *

+ * @param string $lang name

+ * @return string

+ */

+ function lang()

+ {

+ $args = func_get_args();

+ $key = $args[0];

+

+ $context = $this->context->get_data_ref();

+ $context_vars = $context['.'][0];

+

+ if (isset($context_vars['L_' . $key]))

+ {

+ return $context_vars['L_' . $key];

+ }

+

+ // LA_ is transformed into lang(\'$1\')|addslashes, so we should not

+ // need to check for it

+

+ return call_user_func_array(array($this->user, 'lang'), $args);

+ }

+}