/src/application/libraries/Twig/Extension/Core.php
PHP | 847 lines | 406 code | 81 blank | 360 comment | 64 complexity | 4f33fd77978ec08e5ce720e31a2b4dba MD5 | raw file
- <?php
- if (!defined('ENT_SUBSTITUTE')) {
- define('ENT_SUBSTITUTE', 8);
- }
- /*
- * This file is part of Twig.
- *
- * (c) 2009 Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- class Twig_Extension_Core extends Twig_Extension
- {
- /**
- * 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 Twig_TokenParser_For(),
- new Twig_TokenParser_If(),
- new Twig_TokenParser_Extends(),
- new Twig_TokenParser_Include(),
- new Twig_TokenParser_Block(),
- new Twig_TokenParser_Use(),
- new Twig_TokenParser_Filter(),
- new Twig_TokenParser_Macro(),
- new Twig_TokenParser_Import(),
- new Twig_TokenParser_From(),
- new Twig_TokenParser_Set(),
- new Twig_TokenParser_Spaceless(),
- );
- }
- /**
- * Returns a list of filters to add to the existing list.
- *
- * @return array An array of filters
- */
- public function getFilters()
- {
- $filters = array(
- // formatting filters
- 'date' => new Twig_Filter_Function('twig_date_format_filter'),
- 'format' => new Twig_Filter_Function('sprintf'),
- 'replace' => new Twig_Filter_Function('twig_strtr'),
- // encoding
- 'url_encode' => new Twig_Filter_Function('twig_urlencode_filter'),
- 'json_encode' => new Twig_Filter_Function('twig_jsonencode_filter'),
- // string filters
- 'title' => new Twig_Filter_Function('twig_title_string_filter', array('needs_environment' => true)),
- 'capitalize' => new Twig_Filter_Function('twig_capitalize_string_filter', array('needs_environment' => true)),
- 'upper' => new Twig_Filter_Function('strtoupper'),
- 'lower' => new Twig_Filter_Function('strtolower'),
- 'striptags' => new Twig_Filter_Function('strip_tags'),
- // array helpers
- 'join' => new Twig_Filter_Function('twig_join_filter'),
- 'reverse' => new Twig_Filter_Function('twig_reverse_filter'),
- 'length' => new Twig_Filter_Function('twig_length_filter', array('needs_environment' => true)),
- 'sort' => new Twig_Filter_Function('twig_sort_filter'),
- 'merge' => new Twig_Filter_Function('twig_array_merge'),
- // iteration and runtime
- 'default' => new Twig_Filter_Function('twig_default_filter'),
- 'keys' => new Twig_Filter_Function('twig_get_array_keys_filter'),
- // escaping
- 'escape' => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
- 'e' => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
- );
- if (function_exists('mb_get_info')) {
- $filters['upper'] = new Twig_Filter_Function('twig_upper_filter', array('needs_environment' => true));
- $filters['lower'] = new Twig_Filter_Function('twig_lower_filter', array('needs_environment' => true));
- }
- return $filters;
- }
- /**
- * Returns a list of global functions to add to the existing list.
- *
- * @return array An array of global functions
- */
- public function getFunctions()
- {
- return array(
- 'range' => new Twig_Function_Function('range'),
- 'constant' => new Twig_Function_Function('constant'),
- 'cycle' => new Twig_Function_Function('twig_cycle'),
- );
- }
- /**
- * Returns a list of filters to add to the existing list.
- *
- * @return array An array of filters
- */
- public function getTests()
- {
- return array(
- 'even' => new Twig_Test_Function('twig_test_even'),
- 'odd' => new Twig_Test_Function('twig_test_odd'),
- 'defined' => new Twig_Test_Function('twig_test_defined'),
- 'sameas' => new Twig_Test_Function('twig_test_sameas'),
- 'none' => new Twig_Test_Function('twig_test_none'),
- 'null' => new Twig_Test_Function('twig_test_none'),
- 'divisibleby' => new Twig_Test_Function('twig_test_divisibleby'),
- 'constant' => new Twig_Test_Function('twig_test_constant'),
- 'empty' => new Twig_Test_Function('twig_test_empty'),
- );
- }
- /**
- * Returns a list of operators to add to the existing list.
- *
- * @return array An array of operators
- */
- public function getOperators()
- {
- return array(
- array(
- 'not' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
- '-' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Neg'),
- '+' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Pos'),
- ),
- array(
- 'b-and' => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'b-xor' => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'b-or' => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'or' => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'and' => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '==' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '!=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '<' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '>' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '>=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '<=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'not in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotIn', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_In', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '+' => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Add', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '-' => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Sub', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '~' => array('precedence' => 40, 'class' => 'Twig_Node_Expression_Binary_Concat', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '*' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mul', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '/' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Div', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '//' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_FloorDiv', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '%' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'is' => array('precedence' => 100, 'callable' => array($this, 'parseTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'is not' => array('precedence' => 100, 'callable' => array($this, 'parseNotTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '..' => array('precedence' => 110, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '**' => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
- ),
- );
- }
- public function parseNotTestExpression(Twig_Parser $parser, $node)
- {
- return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($parser, $node), $parser->getCurrentToken()->getLine());
- }
- public function parseTestExpression(Twig_Parser $parser, $node)
- {
- $stream = $parser->getStream();
- $name = $stream->expect(Twig_Token::NAME_TYPE);
- $arguments = null;
- if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
- $arguments = $parser->getExpressionParser()->parseArguments();
- }
- return new Twig_Node_Expression_Test($node, $name->getValue(), $arguments, $parser->getCurrentToken()->getLine());
- }
- /**
- * Returns the name of the extension.
- *
- * @return string The extension name
- */
- public function getName()
- {
- return 'core';
- }
- }
- /**
- * Cycles over a value.
- *
- * @param ArrayAccess|array $values An array or an ArrayAccess instance
- * @param integer $i The cycle value
- *
- * @return string The next value in the cycle
- */
- function twig_cycle($values, $i)
- {
- if (!is_array($values) && !$values instanceof ArrayAccess) {
- return $values;
- }
- return $values[$i % count($values)];
- }
- /**
- * Converts a date to the given format.
- *
- * <pre>
- * {{ post.published_at|date("m/d/Y") }}
- * </pre>
- *
- * @param DateTime|string $date A date
- * @param string $format A format
- * @param DateTimeZone|string $timezone A timezone
- *
- * @return string The formatter date
- */
- function twig_date_format_filter($date, $format = 'F j, Y H:i', $timezone = null)
- {
- if (!$date instanceof DateTime && !$date instanceof DateInterval) {
- if (ctype_digit((string) $date)) {
- $date = new DateTime('@'.$date);
- $date->setTimezone(new DateTimeZone(date_default_timezone_get()));
- } else {
- $date = new DateTime($date);
- }
- }
- if (null !== $timezone) {
- if (!$timezone instanceof DateTimeZone) {
- $timezone = new DateTimeZone($timezone);
- }
- $date->setTimezone($timezone);
- }
- return $date->format($format);
- }
- /**
- * URL encodes a string.
- *
- * @param string $url A URL
- * @param bool $raw true to use rawurlencode() instead of urlencode
- *
- * @return string The URL encoded value
- */
- function twig_urlencode_filter($url, $raw = false)
- {
- if ($raw) {
- return rawurlencode($url);
- }
- return urlencode($url);
- }
- if (version_compare(PHP_VERSION, '5.3.0', '<')) {
- /**
- * JSON encodes a PHP variable.
- *
- * @param mixed $value The value to encode.
- * @param integer $options Not used on PHP 5.2.x
- *
- * @return mixed The JSON encoded value
- */
- function twig_jsonencode_filter($value, $options = 0)
- {
- if ($value instanceof Twig_Markup) {
- $value = (string) $value;
- } elseif (is_array($value)) {
- array_walk_recursive($value, '_twig_markup2string');
- }
- return json_encode($value);
- }
- } else {
- /**
- * JSON encodes a PHP variable.
- *
- * @param mixed $value The value to encode.
- * @param integer $options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT
- *
- * @return mixed The JSON encoded value
- */
- function twig_jsonencode_filter($value, $options = 0)
- {
- if ($value instanceof Twig_Markup) {
- $value = (string) $value;
- } elseif (is_array($value)) {
- array_walk_recursive($value, '_twig_markup2string');
- }
- return json_encode($value, $options);
- }
- }
- function _twig_markup2string(&$value)
- {
- if ($value instanceof Twig_Markup) {
- $value = (string) $value;
- }
- }
- /**
- * Merges an array with another one.
- *
- * <pre>
- * {% set items = { 'apple': 'fruit', 'orange': 'fruit' } %}
- *
- * {% set items = items|merge({ 'peugeot': 'car' }) %}
- *
- * {# items now contains { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'car' } #}
- * </pre>
- *
- * @param array $arr1 An array
- * @param array $arr2 An array
- *
- * @return array The merged array
- */
- function twig_array_merge($arr1, $arr2)
- {
- if (!is_array($arr1) || !is_array($arr2)) {
- throw new Twig_Error_Runtime('The merge filter only work with arrays or hashes.');
- }
- return array_merge($arr1, $arr2);
- }
- /**
- * Joins the values to a string.
- *
- * The separator between elements is an empty string per default, you can define it with the optional parameter.
- *
- * <pre>
- * {{ [1, 2, 3]|join('|') }}
- * {# returns 1|2|3 #}
- *
- * {{ [1, 2, 3]|join }}
- * {# returns 123 #}
- * </pre>
- *
- * @param array $value An array
- * @param string $glue The separator
- *
- * @return string The concatenated string
- */
- function twig_join_filter($value, $glue = '')
- {
- return implode($glue, (array) $value);
- }
- /**
- * Returns the value or the default value when it is undefined or empty.
- *
- * <pre>
- *
- * {{ var.foo|default('foo item on var is not defined') }}
- *
- * </pre>
- *
- * @param mixed $value A value
- * @param mixed $default The default value
- *
- * @param mixed The value or the default value;
- */
- function twig_default_filter($value, $default = '')
- {
- if (twig_test_empty($value)) {
- return $default;
- } else {
- return $value;
- }
- }
- /**
- * Returns the keys for the given array.
- *
- * It is useful when you want to iterate over the keys of an array:
- *
- * <pre>
- * {% for key in array|keys %}
- * {# ... #}
- * {% endfor %}
- * </pre>
- *
- * @param array $array An array
- *
- * @return array The keys
- */
- function twig_get_array_keys_filter($array)
- {
- if (is_object($array) && $array instanceof Traversable) {
- return array_keys(iterator_to_array($array));
- }
- if (!is_array($array)) {
- return array();
- }
- return array_keys($array);
- }
- /**
- * Reverses an array.
- *
- * @param array|Traversable $array An array or a Traversable instance
- *
- * return array The array reversed
- */
- function twig_reverse_filter($array)
- {
- if (is_object($array) && $array instanceof Traversable) {
- return array_reverse(iterator_to_array($array));
- }
- if (!is_array($array)) {
- return array();
- }
- return array_reverse($array);
- }
- /**
- * Sorts an array.
- *
- * @param array $array An array
- */
- function twig_sort_filter($array)
- {
- asort($array);
- return $array;
- }
- /* used internally */
- function twig_in_filter($value, $compare)
- {
- if (is_array($compare)) {
- return in_array($value, $compare);
- } elseif (is_string($compare)) {
- return false !== strpos($compare, (string) $value);
- } elseif (is_object($compare) && $compare instanceof Traversable) {
- return in_array($value, iterator_to_array($compare, false));
- }
- return false;
- }
- /**
- * Replaces placeholders in a string.
- *
- * <pre>
- * {{ "I like %this% and %that%."|replace({'%this%': foo, '%that%': "bar"}) }}
- * </pre>
- *
- * @param string $pattern A string
- * @param string $replacements The values for the placeholders
- *
- * @return string The string where the placeholders have been replaced
- */
- function twig_strtr($pattern, $replacements)
- {
- return str_replace(array_keys($replacements), array_values($replacements), $pattern);
- }
- /**
- * Escapes a string.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string The value to be escaped
- * @param string $type The escaping strategy
- * @param string $charset The charset
- * @param Boolean $autoescape Whether the function is called by the auto-escaping feature (true) or by the developer (false)
- */
- function twig_escape_filter(Twig_Environment $env, $string, $type = 'html', $charset = null, $autoescape = false)
- {
- if ($autoescape && is_object($string) && $string instanceof Twig_Markup) {
- return $string;
- }
- if (!is_string($string) && !(is_object($string) && method_exists($string, '__toString'))) {
- return $string;
- }
- if (null === $charset) {
- $charset = $env->getCharset();
- }
- switch ($type) {
- case 'js':
- // escape all non-alphanumeric characters
- // into their \xHH or \uHHHH representations
- if ('UTF-8' != $charset) {
- $string = _twig_convert_encoding($string, 'UTF-8', $charset);
- }
- if (null === $string = preg_replace_callback('#[^\p{L}\p{N} ]#u', '_twig_escape_js_callback', $string)) {
- throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
- }
- if ('UTF-8' != $charset) {
- $string = _twig_convert_encoding($string, $charset, 'UTF-8');
- }
- return $string;
- case 'html':
- return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
- default:
- throw new Twig_Error_Runtime(sprintf('Invalid escape type "%s".', $type));
- }
- }
- /* used internally */
- function twig_escape_filter_is_safe(Twig_Node $filterArgs)
- {
- foreach ($filterArgs as $arg) {
- if ($arg instanceof Twig_Node_Expression_Constant) {
- return array($arg->getAttribute('value'));
- } else {
- return array();
- }
- break;
- }
- return array('html');
- }
- if (function_exists('iconv')) {
- function _twig_convert_encoding($string, $to, $from)
- {
- return iconv($from, $to, $string);
- }
- } elseif (function_exists('mb_convert_encoding')) {
- function _twig_convert_encoding($string, $to, $from)
- {
- return mb_convert_encoding($string, $to, $from);
- }
- } else {
- function _twig_convert_encoding($string, $to, $from)
- {
- throw new Twig_Error_Runtime('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
- }
- }
- function _twig_escape_js_callback($matches)
- {
- $char = $matches[0];
- // \xHH
- if (!isset($char[1])) {
- return '\\x'.substr('00'.bin2hex($char), -2);
- }
- // \uHHHH
- $char = _twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
- return '\\u'.substr('0000'.bin2hex($char), -4);
- }
- // add multibyte extensions if possible
- if (function_exists('mb_get_info')) {
- /**
- * Returns the length of a PHP variable.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param mixed $thing A PHP variable
- *
- * @return integer The length of the value
- */
- function twig_length_filter(Twig_Environment $env, $thing)
- {
- return is_scalar($thing) ? mb_strlen($thing, $env->getCharset()) : count($thing);
- }
- /**
- * Converts a string to uppercase.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string A string
- *
- * @return string The uppercased string
- */
- function twig_upper_filter(Twig_Environment $env, $string)
- {
- if (null !== ($charset = $env->getCharset())) {
- return mb_strtoupper($string, $charset);
- }
- return strtoupper($string);
- }
- /**
- * Converts a string to lowercase.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string A string
- *
- * @return string The lowercased string
- */
- function twig_lower_filter(Twig_Environment $env, $string)
- {
- if (null !== ($charset = $env->getCharset())) {
- return mb_strtolower($string, $charset);
- }
- return strtolower($string);
- }
- /**
- * Returns a titlecased string.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string A string
- *
- * @return string The titlecased string
- */
- function twig_title_string_filter(Twig_Environment $env, $string)
- {
- if (null !== ($charset = $env->getCharset())) {
- return mb_convert_case($string, MB_CASE_TITLE, $charset);
- }
- return ucwords(strtolower($string));
- }
- /**
- * Returns a capitalized string.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string A string
- *
- * @return string The capitalized string
- */
- function twig_capitalize_string_filter(Twig_Environment $env, $string)
- {
- if (null !== ($charset = $env->getCharset())) {
- return mb_strtoupper(mb_substr($string, 0, 1, $charset), $charset).
- mb_strtolower(mb_substr($string, 1, mb_strlen($string, $charset), $charset), $charset);
- }
- return ucfirst(strtolower($string));
- }
- }
- // and byte fallback
- else
- {
- /**
- * Returns the length of a PHP variable.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param mixed $thing A PHP variable
- *
- * @return integer The length of the value
- */
- function twig_length_filter(Twig_Environment $env, $thing)
- {
- return is_scalar($thing) ? strlen($thing) : count($thing);
- }
- /**
- * Returns a titlecased string.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string A string
- *
- * @return string The titlecased string
- */
- function twig_title_string_filter(Twig_Environment $env, $string)
- {
- return ucwords(strtolower($string));
- }
- /**
- * Returns a capitalized string.
- *
- * @param Twig_Environment $env A Twig_Environment instance
- * @param string $string A string
- *
- * @return string The capitalized string
- */
- function twig_capitalize_string_filter(Twig_Environment $env, $string)
- {
- return ucfirst(strtolower($string));
- }
- }
- /* used internally */
- function twig_ensure_traversable($seq)
- {
- if (is_array($seq) || (is_object($seq) && $seq instanceof Traversable)) {
- return $seq;
- } else {
- return array();
- }
- }
- /**
- * Checks that a variable points to the same memory address than another one.
- *
- * <pre>
- * {% if foo.attribute is sameas(false) %}
- * the foo attribute really is the ``false`` PHP value
- * {% endif %}
- * </pre>
- *
- * @param mixed $value A PHP variable
- * @param mixed $test The PHP variable to test against
- *
- * @return Boolean true if the values are the same, false otherwise
- */
- function twig_test_sameas($value, $test)
- {
- return $value === $test;
- }
- /**
- * Checks that a variable is null.
- *
- * <pre>
- * {{ var is none }}
- * </pre>
- *
- * @param mixed $value a PHP variable.
- *
- * @return Boolean true if the value is null, false otherwise
- */
- function twig_test_none($value)
- {
- return null === $value;
- }
- /**
- * Checks if a variable is divisible by a number.
- *
- * <pre>
- * {% if loop.index is divisibleby(3) %}
- * </pre>
- *
- * @param integer $value A PHP value
- * @param integer $num A number
- *
- * @return Boolean true if the value is divisible by the number, false otherwise
- */
- function twig_test_divisibleby($value, $num)
- {
- return 0 == $value % $num;
- }
- /**
- * Checks if a number is even.
- *
- * <pre>
- * {{ var is even }}
- * </pre>
- *
- * @param integer $value An integer
- *
- * @return Boolean true if the value is even, false otherwise
- */
- function twig_test_even($value)
- {
- return $value % 2 == 0;
- }
- /**
- * Checks if a number is odd.
- *
- * <pre>
- * {{ var is odd }}
- * </pre>
- *
- * @param integer $value An integer
- *
- * @return Boolean true if the value is odd, false otherwise
- */
- function twig_test_odd($value)
- {
- return $value % 2 == 1;
- }
- /**
- * Checks if a variable is the exact same value as a constant.
- *
- * <pre>
- * {% if post.status is constant('Post::PUBLISHED') %}
- * the status attribute is exactly the same as Post::PUBLISHED
- * {% endif %}
- * </pre>
- *
- * @param mixed $value A PHP value
- * @param mixed $constant The constant to test against
- *
- * @return Boolean true if the value is the same as the constant, false otherwise
- */
- function twig_test_constant($value, $constant)
- {
- return constant($constant) === $value;
- }
- /**
- * Checks if a variable is defined in the current context.
- *
- * <pre>
- * {# defined works with variable names #}
- * {% if foo is defined %}
- * {# ... #}
- * {% endif %}
- * </pre>
- *
- * @param mixed $name A PHP variable
- * @param array $context The current context
- *
- * @return Boolean true if the value is defined, false otherwise
- */
- function twig_test_defined($name, $context)
- {
- return array_key_exists($name, $context);
- }
- /**
- * Checks if a variable is empty.
- *
- * <pre>
- * {# evaluates to true if the foo variable is null, false, or the empty string #}
- * {% if foo is empty %}
- * {# ... #}
- * {% endif %}
- * </pre>
- *
- * @param mixed $value A PHP variable
- *
- * @return Boolean true if the value is empty, false otherwise
- */
- function twig_test_empty($value)
- {
- if ($value instanceof Countable) {
- return 0 == count($value);
- }
- return false === $value || (empty($value) && '0' != $value);
- }