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Diffstat (limited to 'phpBB/phpbb/template/twig/extension.php')
| -rw-r--r-- | phpBB/phpbb/template/twig/extension.php | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/phpBB/phpbb/template/twig/extension.php b/phpBB/phpbb/template/twig/extension.php new file mode 100644 index 0000000000..6847dbd9f8 --- /dev/null +++ b/phpBB/phpbb/template/twig/extension.php @@ -0,0 +1,182 @@ +<?php +/** +* +* @package phpBB3 +* @copyright (c) 2013 phpBB Group +* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2 +* +*/ + +namespace phpbb\template\twig; + +class 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 = $user; + } + + /** + * Get the name of this extension + * + * @return string + */ + public function getName() + { + return 'phpbb'; + } + + /** + * Returns the token parser instance to add to the existing list. + * + * @return array An array of Twig_TokenParser instances + */ + public function getTokenParsers() + { + return array( + new \phpbb\template\twig\tokenparser\defineparser, + new \phpbb\template\twig\tokenparser\includeparser, + new \phpbb\template\twig\tokenparser\includejs, + new \phpbb\template\twig\tokenparser\includecss, + new \phpbb\template\twig\tokenparser\event, + new \phpbb\template\twig\tokenparser\includephp, + new \phpbb\template\twig\tokenparser\php, + ); + } + + /** + * Returns a list of filters to add to the existing list. + * + * @return array An array of filters + */ + public function getFilters() + { + return array( + new \Twig_SimpleFilter('subset', array($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); + } +} |