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msd2/phpBB3/phpbb/template/twig/extension.php
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185
msd2/phpBB3/phpbb/template/twig/extension.php
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\template\twig;
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class extension extends \Twig_Extension
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{
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/** @var \phpbb\template\context */
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protected $context;
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/** @var \phpbb\language\language */
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protected $language;
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/**
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* Constructor
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*
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* @param \phpbb\template\context $context
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* @param \phpbb\language\language $language
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* @return \phpbb\template\twig\extension
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*/
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public function __construct(\phpbb\template\context $context, $language)
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{
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$this->context = $context;
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$this->language = $language;
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}
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/**
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* Get the name of this extension
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*
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* @return string
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*/
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public function getName()
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{
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return 'phpbb';
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}
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/**
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* Returns the token parser instance to add to the existing list.
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*
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* @return array An array of Twig_TokenParser instances
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*/
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public function getTokenParsers()
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{
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return array(
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new \phpbb\template\twig\tokenparser\defineparser,
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new \phpbb\template\twig\tokenparser\includeparser,
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new \phpbb\template\twig\tokenparser\includejs,
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new \phpbb\template\twig\tokenparser\includecss,
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new \phpbb\template\twig\tokenparser\event,
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new \phpbb\template\twig\tokenparser\includephp,
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new \phpbb\template\twig\tokenparser\php,
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);
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}
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/**
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* Returns a list of filters to add to the existing list.
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*
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* @return array An array of filters
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*/
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public function getFilters()
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{
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return array(
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new \Twig_SimpleFilter('subset', array($this, 'loop_subset'), array('needs_environment' => true)),
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// @deprecated 3.2.0 Uses twig's JS escape method instead of addslashes
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new \Twig_SimpleFilter('addslashes', 'addslashes'),
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);
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}
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/**
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* Returns a list of global functions to add to the existing list.
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*
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* @return array An array of global functions
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*/
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public function getFunctions()
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{
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return array(
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new \Twig_SimpleFunction('lang', array($this, 'lang')),
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);
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}
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/**
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* Returns a list of operators to add to the existing list.
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*
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* @return array An array of operators
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*/
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public function getOperators()
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{
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return array(
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array(
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'!' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
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),
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array(
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// precedence settings are copied from similar operators in Twig core extension
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'||' => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'&&' => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'eq' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'ne' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'neq' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'<>' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'===' => array('precedence' => 20, 'class' => '\phpbb\template\twig\node\expression\binary\equalequal', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'!==' => array('precedence' => 20, 'class' => '\phpbb\template\twig\node\expression\binary\notequalequal', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'gt' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'gte' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'ge' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'lt' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'lte' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'le' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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'mod' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => \Twig_ExpressionParser::OPERATOR_LEFT),
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),
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);
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}
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/**
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* Grabs a subset of a loop
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*
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* @param \Twig_Environment $env A Twig_Environment instance
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* @param mixed $item A variable
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* @param integer $start Start of the subset
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* @param integer $end End of the subset
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* @param Boolean $preserveKeys Whether to preserve key or not (when the input is an array)
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*
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* @return mixed The sliced variable
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*/
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function loop_subset(\Twig_Environment $env, $item, $start, $end = null, $preserveKeys = false)
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{
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// We do almost the same thing as Twig's slice (array_slice), except when $end is positive
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if ($end >= 1)
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{
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// When end is > 1, subset will end on the last item in an array with the specified $end
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// This is different from slice in that it is the number we end on rather than the number
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// of items to grab (length)
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// Start must always be the actual starting number for this calculation (not negative)
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$start = ($start < 0) ? count($item) + $start : $start;
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$end = $end - $start;
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}
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// We always include the last element (this was the past design)
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$end = ($end == -1 || $end === null) ? null : $end + 1;
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return twig_slice($env, $item, $start, $end, $preserveKeys);
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}
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/**
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* Get output for a language variable (L_FOO, LA_FOO)
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*
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* This function checks to see if the language var was outputted to $context
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* (e.g. in the ACP, L_TITLE)
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* If not, we return the result of $user->lang()
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*
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* @return string
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*/
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function lang()
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{
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$args = func_get_args();
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$key = $args[0];
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$context_vars = $this->context->get_root_ref();
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if (is_string($key) && isset($context_vars['L_' . $key]))
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{
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return $context_vars['L_' . $key];
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}
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// LA_ is transformed into lang(\'$1\')|escape('js'), so we should not
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// need to check for it
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return call_user_func_array(array($this->language, 'lang'), $args);
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}
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}
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