<?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 { protected $dateFormats = array('F j, Y H:i', '%d days'); protected $numberFormat = array(0, '.', ','); protected $timezone = null; /** * Sets the default format to be used by the date filter. * * @param string $format The default date format string * @param string $dateIntervalFormat The default date interval format string */ public function setDateFormat($format = null, $dateIntervalFormat = null) { if (null !== $format) { $this->dateFormats[0] = $format; } if (null !== $dateIntervalFormat) { $this->dateFormats[1] = $dateIntervalFormat; } } /** * Gets the default format to be used by the date filter. * * @return array The default date format string and the default date interval format string */ public function getDateFormat() { return $this->dateFormats; } /** * Sets the default timezone to be used by the date filter. * * @param DateTimeZone|string $timezone The default timezone string or a DateTimeZone object */ public function setTimezone($timezone) { $this->timezone = $timezone instanceof DateTimeZone ? $timezone : new DateTimeZone($timezone); } /** * Gets the default timezone to be used by the date filter. * * @return DateTimeZone The default timezone currently in use */ public function getTimezone() { if (null === $this->timezone) { $this->timezone = new DateTimeZone(date_default_timezone_get()); } return $this->timezone; } /** * Sets the default format to be used by the number_format filter. * * @param integer $decimal The number of decimal places to use. * @param string $decimalPoint The character(s) to use for the decimal point. * @param string $thousandSep The character(s) to use for the thousands separator. */ public function setNumberFormat($decimal, $decimalPoint, $thousandSep) { $this->numberFormat = array($decimal, $decimalPoint, $thousandSep); } /** * Get the default format used by the number_format filter. * * @return array The arguments for number_format() */ public function getNumberFormat() { return $this->numberFormat; } /** * 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(), new Twig_TokenParser_Flush(), new Twig_TokenParser_Do(), new Twig_TokenParser_Embed(), ); } /** * Returns a list of filters to add to the existing list. * * @return array An array of filters */ public function getFilters() { $filters = array( // formatting filters new Twig_SimpleFilter('date', 'twig_date_format_filter', array('needs_environment' => true)), new Twig_SimpleFilter('date_modify', 'twig_date_modify_filter', array('needs_environment' => true)), new Twig_SimpleFilter('format', 'sprintf'), new Twig_SimpleFilter('replace', 'strtr'), new Twig_SimpleFilter('number_format', 'twig_number_format_filter', array('needs_environment' => true)), new Twig_SimpleFilter('abs', 'abs'), // encoding new Twig_SimpleFilter('url_encode', 'twig_urlencode_filter'), new Twig_SimpleFilter('json_encode', 'twig_jsonencode_filter'), new Twig_SimpleFilter('convert_encoding', 'twig_convert_encoding'), // string filters new Twig_SimpleFilter('title', 'twig_title_string_filter', array('needs_environment' => true)), new Twig_SimpleFilter('capitalize', 'twig_capitalize_string_filter', array('needs_environment' => true)), new Twig_SimpleFilter('upper', 'strtoupper'), new Twig_SimpleFilter('lower', 'strtolower'), new Twig_SimpleFilter('striptags', 'strip_tags'), new Twig_SimpleFilter('trim', 'trim'), new Twig_SimpleFilter('nl2br', 'nl2br', array('pre_escape' => 'html', 'is_safe' => array('html'))), // array helpers new Twig_SimpleFilter('join', 'twig_join_filter'), new Twig_SimpleFilter('split', 'twig_split_filter'), new Twig_SimpleFilter('sort', 'twig_sort_filter'), new Twig_SimpleFilter('merge', 'twig_array_merge'), new Twig_SimpleFilter('batch', 'twig_array_batch'), // string/array filters new Twig_SimpleFilter('reverse', 'twig_reverse_filter', array('needs_environment' => true)), new Twig_SimpleFilter('length', 'twig_length_filter', array('needs_environment' => true)), new Twig_SimpleFilter('slice', 'twig_slice', array('needs_environment' => true)), new Twig_SimpleFilter('first', 'twig_first', array('needs_environment' => true)), new Twig_SimpleFilter('last', 'twig_last', array('needs_environment' => true)), // iteration and runtime new Twig_SimpleFilter('default', '_twig_default_filter', array('node_class' => 'Twig_Node_Expression_Filter_Default')), new Twig_SimpleFilter('keys', 'twig_get_array_keys_filter'), // escaping new Twig_SimpleFilter('escape', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')), new Twig_SimpleFilter('e', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')), ); if (function_exists('mb_get_info')) { $filters[] = new Twig_SimpleFilter('upper', 'twig_upper_filter', array('needs_environment' => true)); $filters[] = new Twig_SimpleFilter('lower', '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( new Twig_SimpleFunction('range', 'range'), new Twig_SimpleFunction('constant', 'twig_constant'), new Twig_SimpleFunction('cycle', 'twig_cycle'), new Twig_SimpleFunction('random', 'twig_random', array('needs_environment' => true)), new Twig_SimpleFunction('date', 'twig_date_converter', array('needs_environment' => true)), new Twig_SimpleFunction('include', 'twig_include', array('needs_environment' => true, 'needs_context' => true, 'is_safe' => array('all'))), ); } /** * Returns a list of tests to add to the existing list. * * @return array An array of tests */ public function getTests() { return array( new Twig_SimpleTest('even', null, array('node_class' => 'Twig_Node_Expression_Test_Even')), new Twig_SimpleTest('odd', null, array('node_class' => 'Twig_Node_Expression_Test_Odd')), new Twig_SimpleTest('defined', null, array('node_class' => 'Twig_Node_Expression_Test_Defined')), new Twig_SimpleTest('sameas', null, array('node_class' => 'Twig_Node_Expression_Test_Sameas')), new Twig_SimpleTest('none', null, array('node_class' => 'Twig_Node_Expression_Test_Null')), new Twig_SimpleTest('null', null, array('node_class' => 'Twig_Node_Expression_Test_Null')), new Twig_SimpleTest('divisibleby', null, array('node_class' => 'Twig_Node_Expression_Test_Divisibleby')), new Twig_SimpleTest('constant', null, array('node_class' => 'Twig_Node_Expression_Test_Constant')), new Twig_SimpleTest('empty', 'twig_test_empty'), new Twig_SimpleTest('iterable', 'twig_test_iterable'), ); } /** * 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' => 500, 'class' => 'Twig_Node_Expression_Unary_Neg'), '+' => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Pos'), ), array( '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), 'b-or' => array('precedence' => 16, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT), 'b-xor' => array('precedence' => 17, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT), 'b-and' => array('precedence' => 18, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', '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' => 25, 'class' => 'Twig_Node_Expression_Binary_Range', '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' => 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)->getValue(); $arguments = null; if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) { $arguments = $parser->getExpressionParser()->parseArguments(true); } $class = $this->getTestNodeClass($parser, $name, $node->getLine()); return new $class($node, $name, $arguments, $parser->getCurrentToken()->getLine()); } protected function getTestNodeClass(Twig_Parser $parser, $name, $line) { $env = $parser->getEnvironment(); $testMap = $env->getTests(); if (!isset($testMap[$name])) { $message = sprintf('The test "%s" does not exist', $name); if ($alternatives = $env->computeAlternatives($name, array_keys($env->getTests()))) { $message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives)); } throw new Twig_Error_Syntax($message, $line, $parser->getFilename()); } if ($testMap[$name] instanceof Twig_SimpleTest) { return $testMap[$name]->getNodeClass(); } return $testMap[$name] instanceof Twig_Test_Node ? $testMap[$name]->getClass() : 'Twig_Node_Expression_Test'; } /** * 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 $position The cycle position * * @return string The next value in the cycle */ function twig_cycle($values, $position) { if (!is_array($values) && !$values instanceof ArrayAccess) { return $values; } return $values[$position % count($values)]; } /** * Returns a random value depending on the supplied parameter type: * - a random item from a Traversable or array * - a random character from a string * - a random integer between 0 and the integer parameter * * @param Twig_Environment $env A Twig_Environment instance * @param Traversable|array|integer|string $values The values to pick a random item from * * @throws Twig_Error_Runtime When $values is an empty array (does not apply to an empty string which is returned as is). * * @return mixed A random value from the given sequence */ function twig_random(Twig_Environment $env, $values = null) { if (null === $values) { return mt_rand(); } if (is_int($values) || is_float($values)) { return $values < 0 ? mt_rand($values, 0) : mt_rand(0, $values); } if ($values instanceof Traversable) { $values = iterator_to_array($values); } elseif (is_string($values)) { if ('' === $values) { return ''; } if (null !== $charset = $env->getCharset()) { if ('UTF-8' != $charset) { $values = twig_convert_encoding($values, 'UTF-8', $charset); } // unicode version of str_split() // split at all positions, but not after the start and not before the end $values = preg_split('/(?<!^)(?!$)/u', $values); if ('UTF-8' != $charset) { foreach ($values as $i => $value) { $values[$i] = twig_convert_encoding($value, $charset, 'UTF-8'); } } } else { return $values[mt_rand(0, strlen($values) - 1)]; } } if (!is_array($values)) { return $values; } if (0 === count($values)) { throw new Twig_Error_Runtime('The random function cannot pick from an empty array.'); } return $values[array_rand($values, 1)]; } /** * Converts a date to the given format. * * <pre> * {{ post.published_at|date("m/d/Y") }} * </pre> * * @param Twig_Environment $env A Twig_Environment instance * @param DateTime|DateInterval|string $date A date * @param string $format A format * @param DateTimeZone|string $timezone A timezone * * @return string The formatted date */ function twig_date_format_filter(Twig_Environment $env, $date, $format = null, $timezone = null) { if (null === $format) { $formats = $env->getExtension('core')->getDateFormat(); $format = $date instanceof DateInterval ? $formats[1] : $formats[0]; } if ($date instanceof DateInterval) { return $date->format($format); } return twig_date_converter($env, $date, $timezone)->format($format); } /** * Returns a new date object modified * * <pre> * {{ post.published_at|date_modify("-1day")|date("m/d/Y") }} * </pre> * * @param Twig_Environment $env A Twig_Environment instance * @param DateTime|string $date A date * @param string $modifier A modifier string * * @return DateTime A new date object */ function twig_date_modify_filter(Twig_Environment $env, $date, $modifier) { $date = twig_date_converter($env, $date, false); $date->modify($modifier); return $date; } /** * Converts an input to a DateTime instance. * * <pre> * {% if date(user.created_at) < date('+2days') %} * {# do something #} * {% endif %} * </pre> * * @param Twig_Environment $env A Twig_Environment instance * @param DateTime|string $date A date * @param DateTimeZone|string $timezone A timezone * * @return DateTime A DateTime instance */ function twig_date_converter(Twig_Environment $env, $date = null, $timezone = null) { // determine the timezone if (!$timezone) { $defaultTimezone = $env->getExtension('core')->getTimezone(); } elseif (!$timezone instanceof DateTimeZone) { $defaultTimezone = new DateTimeZone($timezone); } else { $defaultTimezone = $timezone; } if ($date instanceof DateTime) { $date = clone $date; if (false !== $timezone) { $date->setTimezone($defaultTimezone); } return $date; } $asString = (string) $date; if (ctype_digit($asString) || (!empty($asString) && '-' === $asString[0] && ctype_digit(substr($asString, 1)))) { $date = '@'.$date; } $date = new DateTime($date, $defaultTimezone); if (false !== $timezone) { $date->setTimezone($defaultTimezone); } return $date; } /** * Number format filter. * * All of the formatting options can be left null, in that case the defaults will * be used. Supplying any of the parameters will override the defaults set in the * environment object. * * @param Twig_Environment $env A Twig_Environment instance * @param mixed $number A float/int/string of the number to format * @param integer $decimal The number of decimal points to display. * @param string $decimalPoint The character(s) to use for the decimal point. * @param string $thousandSep The character(s) to use for the thousands separator. * * @return string The formatted number */ function twig_number_format_filter(Twig_Environment $env, $number, $decimal = null, $decimalPoint = null, $thousandSep = null) { $defaults = $env->getExtension('core')->getNumberFormat(); if (null === $decimal) { $decimal = $defaults[0]; } if (null === $decimalPoint) { $decimalPoint = $defaults[1]; } if (null === $thousandSep) { $thousandSep = $defaults[2]; } return number_format((float) $number, $decimal, $decimalPoint, $thousandSep); } /** * URL encodes a string as a path segment or an array as a query string. * * @param string|array $url A URL or an array of query parameters * @param bool $raw true to use rawurlencode() instead of urlencode * * @return string The URL encoded value */ function twig_urlencode_filter($url, $raw = false) { if (is_array($url)) { return http_build_query($url, '', '&'); } if ($raw) { return rawurlencode($url); } return urlencode($url); } if (version_compare(PHP_VERSION, '5.3.0', '<')) { /** * JSON encodes a 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 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($arr2)) { throw new Twig_Error_Runtime('The merge filter only works with arrays or hashes.'); } return array_merge($arr1, $arr2); } /** * Slices a variable. * * @param Twig_Environment $env A Twig_Environment instance * @param mixed $item A variable * @param integer $start Start of the slice * @param integer $length Size of the slice * @param Boolean $preserveKeys Whether to preserve key or not (when the input is an array) * * @return mixed The sliced variable */ function twig_slice(Twig_Environment $env, $item, $start, $length = null, $preserveKeys = false) { if ($item instanceof Traversable) { $item = iterator_to_array($item, false); } if (is_array($item)) { return array_slice($item, $start, $length, $preserveKeys); } $item = (string) $item; if (function_exists('mb_get_info') && null !== $charset = $env->getCharset()) { return mb_substr($item, $start, null === $length ? mb_strlen($item, $charset) - $start : $length, $charset); } return null === $length ? substr($item, $start) : substr($item, $start, $length); } /** * Returns the first element of the item. * * @param Twig_Environment $env A Twig_Environment instance * @param mixed $item A variable * * @return mixed The first element of the item */ function twig_first(Twig_Environment $env, $item) { $elements = twig_slice($env, $item, 0, 1, false); return is_string($elements) ? $elements[0] : current($elements); } /** * Returns the last element of the item. * * @param Twig_Environment $env A Twig_Environment instance * @param mixed $item A variable * * @return mixed The last element of the item */ function twig_last(Twig_Environment $env, $item) { $elements = twig_slice($env, $item, -1, 1, false); return is_string($elements) ? $elements[0] : current($elements); } /** * 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, $glue = '') { if ($value instanceof Traversable) { $value = iterator_to_array($value, false); } return implode($glue, (array) $value); } /** * Splits the string into an array. * * <pre> * {{ "one,two,three"|split(',') }} * {# returns [one, two, three] #} * * {{ "one,two,three,four,five"|split(',', 3) }} * {# returns [one, two, "three,four,five"] #} * * {{ "123"|split('') }} * {# returns [1, 2, 3] #} * * {{ "aabbcc"|split('', 2) }} * {# returns [aa, bb, cc] #} * </pre> * * @param string $value A string * @param string $delimiter The delimiter * @param integer $limit The limit * * @return array The split string as an array */ function twig_split_filter($value, $delimiter, $limit = null) { if (empty($delimiter)) { return str_split($value, null === $limit ? 1 : $limit); } return null === $limit ? explode($delimiter, $value) : explode($delimiter, $value, $limit); } // The '_default' filter is used internally to avoid using the ternary operator // which costs a lot for big contexts (before PHP 5.4). So, on average, // a function call is cheaper. function _twig_default_filter($value, $default = '') { if (twig_test_empty($value)) { return $default; } 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 a variable. * * @param Twig_Environment $env A Twig_Environment instance * @param array|Traversable|string $item An array, a Traversable instance, or a string * @param Boolean $preserveKeys Whether to preserve key or not * * @return mixed The reversed input */ function twig_reverse_filter(Twig_Environment $env, $item, $preserveKeys = false) { if (is_object($item) && $item instanceof Traversable) { return array_reverse(iterator_to_array($item), $preserveKeys); } if (is_array($item)) { return array_reverse($item, $preserveKeys); } if (null !== $charset = $env->getCharset()) { $string = (string) $item; if ('UTF-8' != $charset) { $item = twig_convert_encoding($string, 'UTF-8', $charset); } preg_match_all('/./us', $item, $matches); $string = implode('', array_reverse($matches[0])); if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, $charset, 'UTF-8'); } return $string; } return strrev((string) $item); } /** * 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, $compare, is_object($value)); } elseif (is_string($compare)) { if (!strlen($value)) { return empty($compare); } return false !== strpos($compare, (string) $value); } elseif ($compare instanceof Traversable) { return in_array($value, iterator_to_array($compare, false), is_object($value)); } return false; } /** * Escapes a string. * * @param Twig_Environment $env A Twig_Environment instance * @param string $string The value to be escaped * @param string $strategy 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, $strategy = 'html', $charset = null, $autoescape = false) { if ($autoescape && $string instanceof Twig_Markup) { return $string; } if (!is_string($string)) { if (is_object($string) && method_exists($string, '__toString')) { $string = (string) $string; } else { return $string; } } if (null === $charset) { $charset = $env->getCharset(); } switch ($strategy) { case 'html': // see http://php.net/htmlspecialchars // Using a static variable to avoid initializing the array // each time the function is called. Moving the declaration on the // top of the function slow downs other escaping strategies. static $htmlspecialcharsCharsets = array( 'ISO-8859-1' => true, 'ISO8859-1' => true, 'ISO-8859-15' => true, 'ISO8859-15' => true, 'utf-8' => true, 'UTF-8' => true, 'CP866' => true, 'IBM866' => true, '866' => true, 'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true, '1251' => true, 'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true, 'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true, 'BIG5' => true, '950' => true, 'GB2312' => true, '936' => true, 'BIG5-HKSCS' => true, 'SHIFT_JIS' => true, 'SJIS' => true, '932' => true, 'EUC-JP' => true, 'EUCJP' => true, 'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true, ); if (isset($htmlspecialcharsCharsets[$charset])) { return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset); } if (isset($htmlspecialcharsCharsets[strtoupper($charset)])) { // cache the lowercase variant for future iterations $htmlspecialcharsCharsets[$charset] = true; return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset); } $string = twig_convert_encoding($string, 'UTF-8', $charset); $string = htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'); return twig_convert_encoding($string, $charset, 'UTF-8'); case 'js': // escape all non-alphanumeric characters // into their \xHH or \uHHHH representations if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, 'UTF-8', $charset); } if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) { throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.'); } $string = preg_replace_callback('#[^a-zA-Z0-9,\._]#Su', '_twig_escape_js_callback', $string); if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, $charset, 'UTF-8'); } return $string; case 'css': if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, 'UTF-8', $charset); } if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) { throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.'); } $string = preg_replace_callback('#[^a-zA-Z0-9]#Su', '_twig_escape_css_callback', $string); if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, $charset, 'UTF-8'); } return $string; case 'html_attr': if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, 'UTF-8', $charset); } if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) { throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.'); } $string = preg_replace_callback('#[^a-zA-Z0-9,\.\-_]#Su', '_twig_escape_html_attr_callback', $string); if ('UTF-8' != $charset) { $string = twig_convert_encoding($string, $charset, 'UTF-8'); } return $string; case 'url': // hackish test to avoid version_compare that is much slower, this works unless PHP releases a 5.10.* // at that point however PHP 5.2.* support can be removed if (PHP_VERSION < '5.3.0') { return str_replace('%7E', '~', rawurlencode($string)); } return rawurlencode($string); default: throw new Twig_Error_Runtime(sprintf('Invalid escaping strategy "%s" (valid ones: html, js, url, css, and html_attr).', $strategy)); } } /* used internally */ function twig_escape_filter_is_safe(Twig_Node $filterArgs) { foreach ($filterArgs as $arg) { if ($arg instanceof Twig_Node_Expression_Constant) { return array($arg->getAttribute('value')); } return array(); } return array('html'); } if (function_exists('mb_convert_encoding')) { function twig_convert_encoding($string, $to, $from) { return mb_convert_encoding($string, $to, $from); } } elseif (function_exists('iconv')) { function twig_convert_encoding($string, $to, $from) { return iconv($from, $to, $string); } } else { function twig_convert_encoding($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'.strtoupper(substr('00'.bin2hex($char), -2)); } // \uHHHH $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8'); return '\\u'.strtoupper(substr('0000'.bin2hex($char), -4)); } function _twig_escape_css_callback($matches) { $char = $matches[0]; // \xHH if (!isset($char[1])) { $hex = ltrim(strtoupper(bin2hex($char)), '0'); if (0 === strlen($hex)) { $hex = '0'; } return '\\'.$hex.' '; } // \uHHHH $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8'); return '\\'.ltrim(strtoupper(bin2hex($char)), '0').' '; } /** * This function is adapted from code coming from Zend Framework. * * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ function _twig_escape_html_attr_callback($matches) { /* * While HTML supports far more named entities, the lowest common denominator * has become HTML5's XML Serialisation which is restricted to the those named * entities that XML supports. Using HTML entities would result in this error: * XML Parsing Error: undefined entity */ static $entityMap = array( 34 => 'quot', /* quotation mark */ 38 => 'amp', /* ampersand */ 60 => 'lt', /* less-than sign */ 62 => 'gt', /* greater-than sign */ ); $chr = $matches[0]; $ord = ord($chr); /** * The following replaces characters undefined in HTML with the * hex entity for the Unicode replacement character. */ if (($ord <= 0x1f && $chr != "\t" && $chr != "\n" && $chr != "\r") || ($ord >= 0x7f && $ord <= 0x9f)) { return '�'; } /** * Check if the current character to escape has a name entity we should * replace it with while grabbing the hex value of the character. */ if (strlen($chr) == 1) { $hex = strtoupper(substr('00'.bin2hex($chr), -2)); } else { $chr = twig_convert_encoding($chr, 'UTF-16BE', 'UTF-8'); $hex = strtoupper(substr('0000'.bin2hex($chr), -4)); } $int = hexdec($hex); if (array_key_exists($int, $entityMap)) { return sprintf('&%s;', $entityMap[$int]); } /** * Per OWASP recommendations, we'll use hex entities for any other * characters where a named entity does not exist. */ return sprintf('&#x%s;', $hex); } // add multibyte extensions if possible if (function_exists('mb_get_info')) { /** * Returns the length of a variable. * * @param Twig_Environment $env A Twig_Environment instance * @param mixed $thing A 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 variable. * * @param Twig_Environment $env A Twig_Environment instance * @param mixed $thing A 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($seq) { if ($seq instanceof Traversable || is_array($seq)) { return $seq; } return array(); } /** * 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 $value A variable * * @return Boolean true if the value is empty, false otherwise */ function twig_test_empty($value) { if ($value instanceof Countable) { return 0 == count($value); } return '' === $value || false === $value || null === $value || array() === $value; } /** * Checks if a variable is traversable. * * <pre> * {# evaluates to true if the foo variable is an array or a traversable object #} * {% if foo is traversable %} * {# ... #} * {% endif %} * </pre> * * @param mixed $value A variable * * @return Boolean true if the value is traversable */ function twig_test_iterable($value) { return $value instanceof Traversable || is_array($value); } /** * Renders a template. * * @param string $template The template to render * @param array $variables The variables to pass to the template * @param Boolean $with_context Whether to pass the current context variables or not * @param Boolean $ignore_missing Whether to ignore missing templates or not * @param Boolean $sandboxed Whether to sandbox the template or not * * @return string The rendered template */ function twig_include(Twig_Environment $env, $context, $template, $variables = array(), $withContext = true, $ignoreMissing = false, $sandboxed = false) { if ($withContext) { $variables = array_merge($context, $variables); } if ($isSandboxed = $sandboxed && $env->hasExtension('sandbox')) { $sandbox = $env->getExtension('sandbox'); if (!$alreadySandboxed = $sandbox->isSandboxed()) { $sandbox->enableSandbox(); } } try { return $env->resolveTemplate($template)->render($variables); } catch (Twig_Error_Loader $e) { if (!$ignoreMissing) { throw $e; } } if ($isSandboxed && !$alreadySandboxed) { $sandbox->disableSandbox(); } } /** * Provides the ability to get constants from instances as well as class/global constants. * * @param string $constant The name of the constant * @param null|object $object The object to get the constant from * * @return string */ function twig_constant($constant, $object = null) { if (null !== $object) { $constant = get_class($object).'::'.$constant; } return constant($constant); } /** * Batches item. * * @param array $items An array of items * @param integer $size The size of the batch * @param string $fill A string to fill missing items * * @return array */ function twig_array_batch($items, $size, $fill = null) { if ($items instanceof Traversable) { $items = iterator_to_array($items, false); } $size = ceil($size); $result = array_chunk($items, $size, true); if (null !== $fill) { $last = count($result) - 1; $result[$last] = array_merge( $result[$last], array_fill(0, $size - count($result[$last]), $fill) ); } return $result; }