inc/3rdparty/Twig/Extension/Core.php

   1 <?php
   2
   3 if (!defined('ENT_SUBSTITUTE')) {
   4     define('ENT_SUBSTITUTE', 8);
   5 }
   6
   7 /*
   8  * This file is part of Twig.
   9  *
  10  * (c) 2009 Fabien Potencier
  11  *
  12  * For the full copyright and license information, please view the LICENSE
  13  * file that was distributed with this source code.
  14  */
  15 class Twig_Extension_Core extends Twig_Extension
  16 {
  17     protected $dateFormats = array('F j, Y H:i', '%d days');
  18     protected $numberFormat = array(0, '.', ',');
  19     protected $timezone = null;
  20
  21     /**
  22      * Sets the default format to be used by the date filter.
  23      *
  24      * @param string $format             The default date format string
  25      * @param string $dateIntervalFormat The default date interval format string
  26      */
  27     public function setDateFormat($format = null, $dateIntervalFormat = null)
  28     {
  29         if (null !== $format) {
  30             $this->dateFormats[0] = $format;
  31         }
  32
  33         if (null !== $dateIntervalFormat) {
  34             $this->dateFormats[1] = $dateIntervalFormat;
  35         }
  36     }
  37
  38     /**
  39      * Gets the default format to be used by the date filter.
  40      *
  41      * @return array The default date format string and the default date interval format string
  42      */
  43     public function getDateFormat()
  44     {
  45         return $this->dateFormats;
  46     }
  47
  48     /**
  49      * Sets the default timezone to be used by the date filter.
  50      *
  51      * @param DateTimeZone|string $timezone The default timezone string or a DateTimeZone object
  52      */
  53     public function setTimezone($timezone)
  54     {
  55         $this->timezone = $timezone instanceof DateTimeZone ? $timezone : new DateTimeZone($timezone);
  56     }
  57
  58     /**
  59      * Gets the default timezone to be used by the date filter.
  60      *
  61      * @return DateTimeZone The default timezone currently in use
  62      */
  63     public function getTimezone()
  64     {
  65         if (null === $this->timezone) {
  66             $this->timezone = new DateTimeZone(date_default_timezone_get());
  67         }
  68
  69         return $this->timezone;
  70     }
  71
  72     /**
  73      * Sets the default format to be used by the number_format filter.
  74      *
  75      * @param integer $decimal      The number of decimal places to use.
  76      * @param string  $decimalPoint The character(s) to use for the decimal point.
  77      * @param string  $thousandSep  The character(s) to use for the thousands separator.
  78      */
  79     public function setNumberFormat($decimal, $decimalPoint, $thousandSep)
  80     {
  81         $this->numberFormat = array($decimal, $decimalPoint, $thousandSep);
  82     }
  83
  84     /**
  85      * Get the default format used by the number_format filter.
  86      *
  87      * @return array The arguments for number_format()
  88      */
  89     public function getNumberFormat()
  90     {
  91         return $this->numberFormat;
  92     }
  93
  94     /**
  95      * Returns the token parser instance to add to the existing list.
  96      *
  97      * @return array An array of Twig_TokenParser instances
  98      */
  99     public function getTokenParsers()
 100     {
 101         return array(
 102             new Twig_TokenParser_For(),
 103             new Twig_TokenParser_If(),
 104             new Twig_TokenParser_Extends(),
 105             new Twig_TokenParser_Include(),
 106             new Twig_TokenParser_Block(),
 107             new Twig_TokenParser_Use(),
 108             new Twig_TokenParser_Filter(),
 109             new Twig_TokenParser_Macro(),
 110             new Twig_TokenParser_Import(),
 111             new Twig_TokenParser_From(),
 112             new Twig_TokenParser_Set(),
 113             new Twig_TokenParser_Spaceless(),
 114             new Twig_TokenParser_Flush(),
 115             new Twig_TokenParser_Do(),
 116             new Twig_TokenParser_Embed(),
 117         );
 118     }
 119
 120     /**
 121      * Returns a list of filters to add to the existing list.
 122      *
 123      * @return array An array of filters
 124      */
 125     public function getFilters()
 126     {
 127         $filters = array(
 128             // formatting filters
 129             new Twig_SimpleFilter('date', 'twig_date_format_filter', array('needs_environment' => true)),
 130             new Twig_SimpleFilter('date_modify', 'twig_date_modify_filter', array('needs_environment' => true)),
 131             new Twig_SimpleFilter('format', 'sprintf'),
 132             new Twig_SimpleFilter('replace', 'strtr'),
 133             new Twig_SimpleFilter('number_format', 'twig_number_format_filter', array('needs_environment' => true)),
 134             new Twig_SimpleFilter('abs', 'abs'),
 135
 136             // encoding
 137             new Twig_SimpleFilter('url_encode', 'twig_urlencode_filter'),
 138             new Twig_SimpleFilter('json_encode', 'twig_jsonencode_filter'),
 139             new Twig_SimpleFilter('convert_encoding', 'twig_convert_encoding'),
 140
 141             // string filters
 142             new Twig_SimpleFilter('title', 'twig_title_string_filter', array('needs_environment' => true)),
 143             new Twig_SimpleFilter('capitalize', 'twig_capitalize_string_filter', array('needs_environment' => true)),
 144             new Twig_SimpleFilter('upper', 'strtoupper'),
 145             new Twig_SimpleFilter('lower', 'strtolower'),
 146             new Twig_SimpleFilter('striptags', 'strip_tags'),
 147             new Twig_SimpleFilter('trim', 'trim'),
 148             new Twig_SimpleFilter('nl2br', 'nl2br', array('pre_escape' => 'html', 'is_safe' => array('html'))),
 149
 150             // array helpers
 151             new Twig_SimpleFilter('join', 'twig_join_filter'),
 152             new Twig_SimpleFilter('split', 'twig_split_filter'),
 153             new Twig_SimpleFilter('sort', 'twig_sort_filter'),
 154             new Twig_SimpleFilter('merge', 'twig_array_merge'),
 155             new Twig_SimpleFilter('batch', 'twig_array_batch'),
 156
 157             // string/array filters
 158             new Twig_SimpleFilter('reverse', 'twig_reverse_filter', array('needs_environment' => true)),
 159             new Twig_SimpleFilter('length', 'twig_length_filter', array('needs_environment' => true)),
 160             new Twig_SimpleFilter('slice', 'twig_slice', array('needs_environment' => true)),
 161             new Twig_SimpleFilter('first', 'twig_first', array('needs_environment' => true)),
 162             new Twig_SimpleFilter('last', 'twig_last', array('needs_environment' => true)),
 163
 164             // iteration and runtime
 165             new Twig_SimpleFilter('default', '_twig_default_filter', array('node_class' => 'Twig_Node_Expression_Filter_Default')),
 166             new Twig_SimpleFilter('keys', 'twig_get_array_keys_filter'),
 167
 168             // escaping
 169             new Twig_SimpleFilter('escape', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
 170             new Twig_SimpleFilter('e', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
 171         );
 172
 173         if (function_exists('mb_get_info')) {
 174             $filters[] = new Twig_SimpleFilter('upper', 'twig_upper_filter', array('needs_environment' => true));
 175             $filters[] = new Twig_SimpleFilter('lower', 'twig_lower_filter', array('needs_environment' => true));
 176         }
 177
 178         return $filters;
 179     }
 180
 181     /**
 182      * Returns a list of global functions to add to the existing list.
 183      *
 184      * @return array An array of global functions
 185      */
 186     public function getFunctions()
 187     {
 188         return array(
 189             new Twig_SimpleFunction('range', 'range'),
 190             new Twig_SimpleFunction('constant', 'twig_constant'),
 191             new Twig_SimpleFunction('cycle', 'twig_cycle'),
 192             new Twig_SimpleFunction('random', 'twig_random', array('needs_environment' => true)),
 193             new Twig_SimpleFunction('date', 'twig_date_converter', array('needs_environment' => true)),
 194             new Twig_SimpleFunction('include', 'twig_include', array('needs_environment' => true, 'needs_context' => true, 'is_safe' => array('all'))),
 195         );
 196     }
 197
 198     /**
 199      * Returns a list of tests to add to the existing list.
 200      *
 201      * @return array An array of tests
 202      */
 203     public function getTests()
 204     {
 205         return array(
 206             new Twig_SimpleTest('even', null, array('node_class' => 'Twig_Node_Expression_Test_Even')),
 207             new Twig_SimpleTest('odd', null, array('node_class' => 'Twig_Node_Expression_Test_Odd')),
 208             new Twig_SimpleTest('defined', null, array('node_class' => 'Twig_Node_Expression_Test_Defined')),
 209             new Twig_SimpleTest('sameas', null, array('node_class' => 'Twig_Node_Expression_Test_Sameas')),
 210             new Twig_SimpleTest('none', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
 211             new Twig_SimpleTest('null', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
 212             new Twig_SimpleTest('divisibleby', null, array('node_class' => 'Twig_Node_Expression_Test_Divisibleby')),
 213             new Twig_SimpleTest('constant', null, array('node_class' => 'Twig_Node_Expression_Test_Constant')),
 214             new Twig_SimpleTest('empty', 'twig_test_empty'),
 215             new Twig_SimpleTest('iterable', 'twig_test_iterable'),
 216         );
 217     }
 218
 219     /**
 220      * Returns a list of operators to add to the existing list.
 221      *
 222      * @return array An array of operators
 223      */
 224     public function getOperators()
 225     {
 226         return array(
 227             array(
 228                 'not' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
 229                 '-'   => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Neg'),
 230                 '+'   => array('precedence' => 500, 'class' => 'Twig_Node_Expression_Unary_Pos'),
 231             ),
 232             array(
 233                 'or'     => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 234                 'and'    => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 235                 'b-or'   => array('precedence' => 16, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 236                 'b-xor'  => array('precedence' => 17, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 237                 'b-and'  => array('precedence' => 18, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 238                 '=='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 239                 '!='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 240                 '<'      => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 241                 '>'      => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 242                 '>='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 243                 '<='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 244                 'not in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotIn', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 245                 'in'     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_In', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 246                 '..'     => array('precedence' => 25, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 247                 '+'      => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Add', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 248                 '-'      => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Sub', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 249                 '~'      => array('precedence' => 40, 'class' => 'Twig_Node_Expression_Binary_Concat', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 250                 '*'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mul', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 251                 '/'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Div', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 252                 '//'     => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_FloorDiv', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 253                 '%'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 254                 'is'     => array('precedence' => 100, 'callable' => array($this, 'parseTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 255                 'is not' => array('precedence' => 100, 'callable' => array($this, 'parseNotTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
 256                 '**'     => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
 257             ),
 258         );
 259     }
 260
 261     public function parseNotTestExpression(Twig_Parser $parser, $node)
 262     {
 263         return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($parser, $node), $parser->getCurrentToken()->getLine());
 264     }
 265
 266     public function parseTestExpression(Twig_Parser $parser, $node)
 267     {
 268         $stream = $parser->getStream();
 269         $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
 270         $arguments = null;
 271         if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
 272             $arguments = $parser->getExpressionParser()->parseArguments(true);
 273         }
 274
 275         $class = $this->getTestNodeClass($parser, $name, $node->getLine());
 276
 277         return new $class($node, $name, $arguments, $parser->getCurrentToken()->getLine());
 278     }
 279
 280     protected function getTestNodeClass(Twig_Parser $parser, $name, $line)
 281     {
 282         $env = $parser->getEnvironment();
 283         $testMap = $env->getTests();
 284         if (!isset($testMap[$name])) {
 285             $message = sprintf('The test "%s" does not exist', $name);
 286             if ($alternatives = $env->computeAlternatives($name, array_keys($env->getTests()))) {
 287                 $message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives));
 288             }
 289
 290             throw new Twig_Error_Syntax($message, $line, $parser->getFilename());
 291         }
 292
 293         if ($testMap[$name] instanceof Twig_SimpleTest) {
 294             return $testMap[$name]->getNodeClass();
 295         }
 296
 297         return $testMap[$name] instanceof Twig_Test_Node ? $testMap[$name]->getClass() : 'Twig_Node_Expression_Test';
 298     }
 299
 300     /**
 301      * Returns the name of the extension.
 302      *
 303      * @return string The extension name
 304      */
 305     public function getName()
 306     {
 307         return 'core';
 308     }
 309 }
 310
 311 /**
 312  * Cycles over a value.
 313  *
 314  * @param ArrayAccess|array $values   An array or an ArrayAccess instance
 315  * @param integer           $position The cycle position
 316  *
 317  * @return string The next value in the cycle
 318  */
 319 function twig_cycle($values, $position)
 320 {
 321     if (!is_array($values) && !$values instanceof ArrayAccess) {
 322         return $values;
 323     }
 324
 325     return $values[$position % count($values)];
 326 }
 327
 328 /**
 329  * Returns a random value depending on the supplied parameter type:
 330  * - a random item from a Traversable or array
 331  * - a random character from a string
 332  * - a random integer between 0 and the integer parameter
 333  *
 334  * @param Twig_Environment                 $env    A Twig_Environment instance
 335  * @param Traversable|array|integer|string $values The values to pick a random item from
 336  *
 337  * @throws Twig_Error_Runtime When $values is an empty array (does not apply to an empty string which is returned as is).
 338  *
 339  * @return mixed A random value from the given sequence
 340  */
 341 function twig_random(Twig_Environment $env, $values = null)
 342 {
 343     if (null === $values) {
 344         return mt_rand();
 345     }
 346
 347     if (is_int($values) || is_float($values)) {
 348         return $values < 0 ? mt_rand($values, 0) : mt_rand(0, $values);
 349     }
 350
 351     if ($values instanceof Traversable) {
 352         $values = iterator_to_array($values);
 353     } elseif (is_string($values)) {
 354         if ('' === $values) {
 355             return '';
 356         }
 357         if (null !== $charset = $env->getCharset()) {
 358             if ('UTF-8' != $charset) {
 359                 $values = twig_convert_encoding($values, 'UTF-8', $charset);
 360             }
 361
 362             // unicode version of str_split()
 363             // split at all positions, but not after the start and not before the end
 364             $values = preg_split('/(?<!^)(?!$)/u', $values);
 365
 366             if ('UTF-8' != $charset) {
 367                 foreach ($values as $i => $value) {
 368                     $values[$i] = twig_convert_encoding($value, $charset, 'UTF-8');
 369                 }
 370             }
 371         } else {
 372             return $values[mt_rand(0, strlen($values) - 1)];
 373         }
 374     }
 375
 376     if (!is_array($values)) {
 377         return $values;
 378     }
 379
 380     if (0 === count($values)) {
 381         throw new Twig_Error_Runtime('The random function cannot pick from an empty array.');
 382     }
 383
 384     return $values[array_rand($values, 1)];
 385 }
 386
 387 /**
 388  * Converts a date to the given format.
 389  *
 390  * <pre>
 391  *   {{ post.published_at|date("m/d/Y") }}
 392  * </pre>
 393  *
 394  * @param Twig_Environment             $env      A Twig_Environment instance
 395  * @param DateTime|DateInterval|string $date     A date
 396  * @param string                       $format   A format
 397  * @param DateTimeZone|string          $timezone A timezone
 398  *
 399  * @return string The formatted date
 400  */
 401 function twig_date_format_filter(Twig_Environment $env, $date, $format = null, $timezone = null)
 402 {
 403     if (null === $format) {
 404         $formats = $env->getExtension('core')->getDateFormat();
 405         $format = $date instanceof DateInterval ? $formats[1] : $formats[0];
 406     }
 407
 408     if ($date instanceof DateInterval) {
 409         return $date->format($format);
 410     }
 411
 412     return twig_date_converter($env, $date, $timezone)->format($format);
 413 }
 414
 415 /**
 416  * Returns a new date object modified
 417  *
 418  * <pre>
 419  *   {{ post.published_at|date_modify("-1day")|date("m/d/Y") }}
 420  * </pre>
 421  *
 422  * @param Twig_Environment  $env      A Twig_Environment instance
 423  * @param DateTime|string   $date     A date
 424  * @param string            $modifier A modifier string
 425  *
 426  * @return DateTime A new date object
 427  */
 428 function twig_date_modify_filter(Twig_Environment $env, $date, $modifier)
 429 {
 430     $date = twig_date_converter($env, $date, false);
 431     $date->modify($modifier);
 432
 433     return $date;
 434 }
 435
 436 /**
 437  * Converts an input to a DateTime instance.
 438  *
 439  * <pre>
 440  *    {% if date(user.created_at) < date('+2days') %}
 441  *      {# do something #}
 442  *    {% endif %}
 443  * </pre>
 444  *
 445  * @param Twig_Environment    $env      A Twig_Environment instance
 446  * @param DateTime|string     $date     A date
 447  * @param DateTimeZone|string $timezone A timezone
 448  *
 449  * @return DateTime A DateTime instance
 450  */
 451 function twig_date_converter(Twig_Environment $env, $date = null, $timezone = null)
 452 {
 453     // determine the timezone
 454     if (!$timezone) {
 455         $defaultTimezone = $env->getExtension('core')->getTimezone();
 456     } elseif (!$timezone instanceof DateTimeZone) {
 457         $defaultTimezone = new DateTimeZone($timezone);
 458     } else {
 459         $defaultTimezone = $timezone;
 460     }
 461
 462     if ($date instanceof DateTime) {
 463         $date = clone $date;
 464         if (false !== $timezone) {
 465             $date->setTimezone($defaultTimezone);
 466         }
 467
 468         return $date;
 469     }
 470
 471     $asString = (string) $date;
 472     if (ctype_digit($asString) || (!empty($asString) && '-' === $asString[0] && ctype_digit(substr($asString, 1)))) {
 473         $date = '@'.$date;
 474     }
 475
 476     $date = new DateTime($date, $defaultTimezone);
 477     if (false !== $timezone) {
 478         $date->setTimezone($defaultTimezone);
 479     }
 480
 481     return $date;
 482 }
 483
 484 /**
 485  * Number format filter.
 486  *
 487  * All of the formatting options can be left null, in that case the defaults will
 488  * be used.  Supplying any of the parameters will override the defaults set in the
 489  * environment object.
 490  *
 491  * @param Twig_Environment    $env          A Twig_Environment instance
 492  * @param mixed               $number       A float/int/string of the number to format
 493  * @param integer             $decimal      The number of decimal points to display.
 494  * @param string              $decimalPoint The character(s) to use for the decimal point.
 495  * @param string              $thousandSep  The character(s) to use for the thousands separator.
 496  *
 497  * @return string The formatted number
 498  */
 499 function twig_number_format_filter(Twig_Environment $env, $number, $decimal = null, $decimalPoint = null, $thousandSep = null)
 500 {
 501     $defaults = $env->getExtension('core')->getNumberFormat();
 502     if (null === $decimal) {
 503         $decimal = $defaults[0];
 504     }
 505
 506     if (null === $decimalPoint) {
 507         $decimalPoint = $defaults[1];
 508     }
 509
 510     if (null === $thousandSep) {
 511         $thousandSep = $defaults[2];
 512     }
 513
 514     return number_format((float) $number, $decimal, $decimalPoint, $thousandSep);
 515 }
 516
 517 /**
 518  * URL encodes a string as a path segment or an array as a query string.
 519  *
 520  * @param string|array $url A URL or an array of query parameters
 521  * @param bool         $raw true to use rawurlencode() instead of urlencode
 522  *
 523  * @return string The URL encoded value
 524  */
 525 function twig_urlencode_filter($url, $raw = false)
 526 {
 527     if (is_array($url)) {
 528         return http_build_query($url, '', '&');
 529     }
 530
 531     if ($raw) {
 532         return rawurlencode($url);
 533     }
 534
 535     return urlencode($url);
 536 }
 537
 538 if (version_compare(PHP_VERSION, '5.3.0', '<')) {
 539     /**
 540      * JSON encodes a variable.
 541      *
 542      * @param mixed   $value   The value to encode.
 543      * @param integer $options Not used on PHP 5.2.x
 544      *
 545      * @return mixed The JSON encoded value
 546      */
 547     function twig_jsonencode_filter($value, $options = 0)
 548     {
 549         if ($value instanceof Twig_Markup) {
 550             $value = (string) $value;
 551         } elseif (is_array($value)) {
 552             array_walk_recursive($value, '_twig_markup2string');
 553         }
 554
 555         return json_encode($value);
 556     }
 557 } else {
 558     /**
 559      * JSON encodes a variable.
 560      *
 561      * @param mixed   $value   The value to encode.
 562      * @param integer $options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT
 563      *
 564      * @return mixed The JSON encoded value
 565      */
 566     function twig_jsonencode_filter($value, $options = 0)
 567     {
 568         if ($value instanceof Twig_Markup) {
 569             $value = (string) $value;
 570         } elseif (is_array($value)) {
 571             array_walk_recursive($value, '_twig_markup2string');
 572         }
 573
 574         return json_encode($value, $options);
 575     }
 576 }
 577
 578 function _twig_markup2string(&$value)
 579 {
 580     if ($value instanceof Twig_Markup) {
 581         $value = (string) $value;
 582     }
 583 }
 584
 585 /**
 586  * Merges an array with another one.
 587  *
 588  * <pre>
 589  *  {% set items = { 'apple': 'fruit', 'orange': 'fruit' } %}
 590  *
 591  *  {% set items = items|merge({ 'peugeot': 'car' }) %}
 592  *
 593  *  {# items now contains { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'car' } #}
 594  * </pre>
 595  *
 596  * @param array $arr1 An array
 597  * @param array $arr2 An array
 598  *
 599  * @return array The merged array
 600  */
 601 function twig_array_merge($arr1, $arr2)
 602 {
 603     if (!is_array($arr1) || !is_array($arr2)) {
 604         throw new Twig_Error_Runtime('The merge filter only works with arrays or hashes.');
 605     }
 606
 607     return array_merge($arr1, $arr2);
 608 }
 609
 610 /**
 611  * Slices a variable.
 612  *
 613  * @param Twig_Environment $env          A Twig_Environment instance
 614  * @param mixed            $item         A variable
 615  * @param integer          $start        Start of the slice
 616  * @param integer          $length       Size of the slice
 617  * @param Boolean          $preserveKeys Whether to preserve key or not (when the input is an array)
 618  *
 619  * @return mixed The sliced variable
 620  */
 621 function twig_slice(Twig_Environment $env, $item, $start, $length = null, $preserveKeys = false)
 622 {
 623     if ($item instanceof Traversable) {
 624         $item = iterator_to_array($item, false);
 625     }
 626
 627     if (is_array($item)) {
 628         return array_slice($item, $start, $length, $preserveKeys);
 629     }
 630
 631     $item = (string) $item;
 632
 633     if (function_exists('mb_get_info') && null !== $charset = $env->getCharset()) {
 634         return mb_substr($item, $start, null === $length ? mb_strlen($item, $charset) - $start : $length, $charset);
 635     }
 636
 637     return null === $length ? substr($item, $start) : substr($item, $start, $length);
 638 }
 639
 640 /**
 641  * Returns the first element of the item.
 642  *
 643  * @param Twig_Environment $env  A Twig_Environment instance
 644  * @param mixed            $item A variable
 645  *
 646  * @return mixed The first element of the item
 647  */
 648 function twig_first(Twig_Environment $env, $item)
 649 {
 650     $elements = twig_slice($env, $item, 0, 1, false);
 651
 652     return is_string($elements) ? $elements[0] : current($elements);
 653 }
 654
 655 /**
 656  * Returns the last element of the item.
 657  *
 658  * @param Twig_Environment $env  A Twig_Environment instance
 659  * @param mixed            $item A variable
 660  *
 661  * @return mixed The last element of the item
 662  */
 663 function twig_last(Twig_Environment $env, $item)
 664 {
 665     $elements = twig_slice($env, $item, -1, 1, false);
 666
 667     return is_string($elements) ? $elements[0] : current($elements);
 668 }
 669
 670 /**
 671  * Joins the values to a string.
 672  *
 673  * The separator between elements is an empty string per default, you can define it with the optional parameter.
 674  *
 675  * <pre>
 676  *  {{ [1, 2, 3]|join('|') }}
 677  *  {# returns 1|2|3 #}
 678  *
 679  *  {{ [1, 2, 3]|join }}
 680  *  {# returns 123 #}
 681  * </pre>
 682  *
 683  * @param array  $value An array
 684  * @param string $glue  The separator
 685  *
 686  * @return string The concatenated string
 687  */
 688 function twig_join_filter($value, $glue = '')
 689 {
 690     if ($value instanceof Traversable) {
 691         $value = iterator_to_array($value, false);
 692     }
 693
 694     return implode($glue, (array) $value);
 695 }
 696
 697 /**
 698  * Splits the string into an array.
 699  *
 700  * <pre>
 701  *  {{ "one,two,three"|split(',') }}
 702  *  {# returns [one, two, three] #}
 703  *
 704  *  {{ "one,two,three,four,five"|split(',', 3) }}
 705  *  {# returns [one, two, "three,four,five"] #}
 706  *
 707  *  {{ "123"|split('') }}
 708  *  {# returns [1, 2, 3] #}
 709  *
 710  *  {{ "aabbcc"|split('', 2) }}
 711  *  {# returns [aa, bb, cc] #}
 712  * </pre>
 713  *
 714  * @param string  $value     A string
 715  * @param string  $delimiter The delimiter
 716  * @param integer $limit     The limit
 717  *
 718  * @return array The split string as an array
 719  */
 720 function twig_split_filter($value, $delimiter, $limit = null)
 721 {
 722     if (empty($delimiter)) {
 723         return str_split($value, null === $limit ? 1 : $limit);
 724     }
 725
 726     return null === $limit ? explode($delimiter, $value) : explode($delimiter, $value, $limit);
 727 }
 728
 729 // The '_default' filter is used internally to avoid using the ternary operator
 730 // which costs a lot for big contexts (before PHP 5.4). So, on average,
 731 // a function call is cheaper.
 732 function _twig_default_filter($value, $default = '')
 733 {
 734     if (twig_test_empty($value)) {
 735         return $default;
 736     }
 737
 738     return $value;
 739 }
 740
 741 /**
 742  * Returns the keys for the given array.
 743  *
 744  * It is useful when you want to iterate over the keys of an array:
 745  *
 746  * <pre>
 747  *  {% for key in array|keys %}
 748  *      {# ... #}
 749  *  {% endfor %}
 750  * </pre>
 751  *
 752  * @param array $array An array
 753  *
 754  * @return array The keys
 755  */
 756 function twig_get_array_keys_filter($array)
 757 {
 758     if (is_object($array) && $array instanceof Traversable) {
 759         return array_keys(iterator_to_array($array));
 760     }
 761
 762     if (!is_array($array)) {
 763         return array();
 764     }
 765
 766     return array_keys($array);
 767 }
 768
 769 /**
 770  * Reverses a variable.
 771  *
 772  * @param Twig_Environment         $env          A Twig_Environment instance
 773  * @param array|Traversable|string $item         An array, a Traversable instance, or a string
 774  * @param Boolean                  $preserveKeys Whether to preserve key or not
 775  *
 776  * @return mixed The reversed input
 777  */
 778 function twig_reverse_filter(Twig_Environment $env, $item, $preserveKeys = false)
 779 {
 780     if (is_object($item) && $item instanceof Traversable) {
 781         return array_reverse(iterator_to_array($item), $preserveKeys);
 782     }
 783
 784     if (is_array($item)) {
 785         return array_reverse($item, $preserveKeys);
 786     }
 787
 788     if (null !== $charset = $env->getCharset()) {
 789         $string = (string) $item;
 790
 791         if ('UTF-8' != $charset) {
 792             $item = twig_convert_encoding($string, 'UTF-8', $charset);
 793         }
 794
 795         preg_match_all('/./us', $item, $matches);
 796
 797         $string = implode('', array_reverse($matches[0]));
 798
 799         if ('UTF-8' != $charset) {
 800             $string = twig_convert_encoding($string, $charset, 'UTF-8');
 801         }
 802
 803         return $string;
 804     }
 805
 806     return strrev((string) $item);
 807 }
 808
 809 /**
 810  * Sorts an array.
 811  *
 812  * @param array $array An array
 813  */
 814 function twig_sort_filter($array)
 815 {
 816     asort($array);
 817
 818     return $array;
 819 }
 820
 821 /* used internally */
 822 function twig_in_filter($value, $compare)
 823 {
 824     if (is_array($compare)) {
 825         return in_array($value, $compare, is_object($value));
 826     } elseif (is_string($compare)) {
 827         if (!strlen($value)) {
 828             return empty($compare);
 829         }
 830
 831         return false !== strpos($compare, (string) $value);
 832     } elseif ($compare instanceof Traversable) {
 833         return in_array($value, iterator_to_array($compare, false), is_object($value));
 834     }
 835
 836     return false;
 837 }
 838
 839 /**
 840  * Escapes a string.
 841  *
 842  * @param Twig_Environment $env        A Twig_Environment instance
 843  * @param string           $string     The value to be escaped
 844  * @param string           $strategy   The escaping strategy
 845  * @param string           $charset    The charset
 846  * @param Boolean          $autoescape Whether the function is called by the auto-escaping feature (true) or by the developer (false)
 847  */
 848 function twig_escape_filter(Twig_Environment $env, $string, $strategy = 'html', $charset = null, $autoescape = false)
 849 {
 850     if ($autoescape && $string instanceof Twig_Markup) {
 851         return $string;
 852     }
 853
 854     if (!is_string($string)) {
 855         if (is_object($string) && method_exists($string, '__toString')) {
 856             $string = (string) $string;
 857         } else {
 858             return $string;
 859         }
 860     }
 861
 862     if (null === $charset) {
 863         $charset = $env->getCharset();
 864     }
 865
 866     switch ($strategy) {
 867         case 'html':
 868             // see http://php.net/htmlspecialchars
 869
 870             // Using a static variable to avoid initializing the array
 871             // each time the function is called. Moving the declaration on the
 872             // top of the function slow downs other escaping strategies.
 873             static $htmlspecialcharsCharsets = array(
 874                 'ISO-8859-1' => true, 'ISO8859-1' => true,
 875                 'ISO-8859-15' => true, 'ISO8859-15' => true,
 876                 'utf-8' => true, 'UTF-8' => true,
 877                 'CP866' => true, 'IBM866' => true, '866' => true,
 878                 'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
 879                 '1251' => true,
 880                 'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
 881                 'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
 882                 'BIG5' => true, '950' => true,
 883                 'GB2312' => true, '936' => true,
 884                 'BIG5-HKSCS' => true,
 885                 'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
 886                 'EUC-JP' => true, 'EUCJP' => true,
 887                 'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
 888             );
 889
 890             if (isset($htmlspecialcharsCharsets[$charset])) {
 891                 return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
 892             }
 893
 894             if (isset($htmlspecialcharsCharsets[strtoupper($charset)])) {
 895                 // cache the lowercase variant for future iterations
 896                 $htmlspecialcharsCharsets[$charset] = true;
 897
 898                 return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
 899             }
 900
 901             $string = twig_convert_encoding($string, 'UTF-8', $charset);
 902             $string = htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
 903
 904             return twig_convert_encoding($string, $charset, 'UTF-8');
 905
 906         case 'js':
 907             // escape all non-alphanumeric characters
 908             // into their \xHH or \uHHHH representations
 909             if ('UTF-8' != $charset) {
 910                 $string = twig_convert_encoding($string, 'UTF-8', $charset);
 911             }
 912
 913             if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) {
 914                 throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
 915             }
 916
 917             $string = preg_replace_callback('#[^a-zA-Z0-9,\._]#Su', '_twig_escape_js_callback', $string);
 918
 919             if ('UTF-8' != $charset) {
 920                 $string = twig_convert_encoding($string, $charset, 'UTF-8');
 921             }
 922
 923             return $string;
 924
 925         case 'css':
 926             if ('UTF-8' != $charset) {
 927                 $string = twig_convert_encoding($string, 'UTF-8', $charset);
 928             }
 929
 930             if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) {
 931                 throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
 932             }
 933
 934             $string = preg_replace_callback('#[^a-zA-Z0-9]#Su', '_twig_escape_css_callback', $string);
 935
 936             if ('UTF-8' != $charset) {
 937                 $string = twig_convert_encoding($string, $charset, 'UTF-8');
 938             }
 939
 940             return $string;
 941
 942         case 'html_attr':
 943             if ('UTF-8' != $charset) {
 944                 $string = twig_convert_encoding($string, 'UTF-8', $charset);
 945             }
 946
 947             if (0 == strlen($string) ? false : (1 == preg_match('/^./su', $string) ? false : true)) {
 948                 throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
 949             }
 950
 951             $string = preg_replace_callback('#[^a-zA-Z0-9,\.\-_]#Su', '_twig_escape_html_attr_callback', $string);
 952
 953             if ('UTF-8' != $charset) {
 954                 $string = twig_convert_encoding($string, $charset, 'UTF-8');
 955             }
 956
 957             return $string;
 958
 959         case 'url':
 960             // hackish test to avoid version_compare that is much slower, this works unless PHP releases a 5.10.*
 961             // at that point however PHP 5.2.* support can be removed
 962             if (PHP_VERSION < '5.3.0') {
 963                 return str_replace('%7E', '~', rawurlencode($string));
 964             }
 965
 966             return rawurlencode($string);
 967
 968         default:
 969             throw new Twig_Error_Runtime(sprintf('Invalid escaping strategy "%s" (valid ones: html, js, url, css, and html_attr).', $strategy));
 970     }
 971 }
 972
 973 /* used internally */
 974 function twig_escape_filter_is_safe(Twig_Node $filterArgs)
 975 {
 976     foreach ($filterArgs as $arg) {
 977         if ($arg instanceof Twig_Node_Expression_Constant) {
 978             return array($arg->getAttribute('value'));
 979         }
 980
 981         return array();
 982     }
 983
 984     return array('html');
 985 }
 986
 987 if (function_exists('mb_convert_encoding')) {
 988     function twig_convert_encoding($string, $to, $from)
 989     {
 990         return mb_convert_encoding($string, $to, $from);
 991     }
 992 } elseif (function_exists('iconv')) {
 993     function twig_convert_encoding($string, $to, $from)
 994     {
 995         return iconv($from, $to, $string);
 996     }
 997 } else {
 998     function twig_convert_encoding($string, $to, $from)
 999     {
1000         throw new Twig_Error_Runtime('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
1001     }
1002 }
1003
1004 function _twig_escape_js_callback($matches)
1005 {
1006     $char = $matches[0];
1007
1008     // \xHH
1009     if (!isset($char[1])) {
1010         return '\\x'.strtoupper(substr('00'.bin2hex($char), -2));
1011     }
1012
1013     // \uHHHH
1014     $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
1015
1016     return '\\u'.strtoupper(substr('0000'.bin2hex($char), -4));
1017 }
1018
1019 function _twig_escape_css_callback($matches)
1020 {
1021     $char = $matches[0];
1022
1023     // \xHH
1024     if (!isset($char[1])) {
1025         $hex = ltrim(strtoupper(bin2hex($char)), '0');
1026         if (0 === strlen($hex)) {
1027             $hex = '0';
1028         }
1029
1030         return '\\'.$hex.' ';
1031     }
1032
1033     // \uHHHH
1034     $char = twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
1035
1036     return '\\'.ltrim(strtoupper(bin2hex($char)), '0').' ';
1037 }
1038
1039 /**
1040  * This function is adapted from code coming from Zend Framework.
1041  *
1042  * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
1043  * @license   http://framework.zend.com/license/new-bsd New BSD License
1044  */
1045 function _twig_escape_html_attr_callback($matches)
1046 {
1047     /*
1048      * While HTML supports far more named entities, the lowest common denominator
1049      * has become HTML5's XML Serialisation which is restricted to the those named
1050      * entities that XML supports. Using HTML entities would result in this error:
1051      *     XML Parsing Error: undefined entity
1052      */
1053     static $entityMap = array(
1054         34 => 'quot', /* quotation mark */
1055         38 => 'amp',  /* ampersand */
1056         60 => 'lt',   /* less-than sign */
1057         62 => 'gt',   /* greater-than sign */
1058     );
1059
1060     $chr = $matches[0];
1061     $ord = ord($chr);
1062
1063     /**
1064      * The following replaces characters undefined in HTML with the
1065      * hex entity for the Unicode replacement character.
1066      */
1067     if (($ord <= 0x1f && $chr != "\t" && $chr != "\n" && $chr != "\r") || ($ord >= 0x7f && $ord <= 0x9f)) {
1068         return '&#xFFFD;';
1069     }
1070
1071     /**
1072      * Check if the current character to escape has a name entity we should
1073      * replace it with while grabbing the hex value of the character.
1074      */
1075     if (strlen($chr) == 1) {
1076         $hex = strtoupper(substr('00'.bin2hex($chr), -2));
1077     } else {
1078         $chr = twig_convert_encoding($chr, 'UTF-16BE', 'UTF-8');
1079         $hex = strtoupper(substr('0000'.bin2hex($chr), -4));
1080     }
1081
1082     $int = hexdec($hex);
1083     if (array_key_exists($int, $entityMap)) {
1084         return sprintf('&%s;', $entityMap[$int]);
1085     }
1086
1087     /**
1088      * Per OWASP recommendations, we'll use hex entities for any other
1089      * characters where a named entity does not exist.
1090      */
1091
1092     return sprintf('&#x%s;', $hex);
1093 }
1094
1095 // add multibyte extensions if possible
1096 if (function_exists('mb_get_info')) {
1097     /**
1098      * Returns the length of a variable.
1099      *
1100      * @param Twig_Environment $env   A Twig_Environment instance
1101      * @param mixed            $thing A variable
1102      *
1103      * @return integer The length of the value
1104      */
1105     function twig_length_filter(Twig_Environment $env, $thing)
1106     {
1107         return is_scalar($thing) ? mb_strlen($thing, $env->getCharset()) : count($thing);
1108     }
1109
1110     /**
1111      * Converts a string to uppercase.
1112      *
1113      * @param Twig_Environment $env    A Twig_Environment instance
1114      * @param string           $string A string
1115      *
1116      * @return string The uppercased string
1117      */
1118     function twig_upper_filter(Twig_Environment $env, $string)
1119     {
1120         if (null !== ($charset = $env->getCharset())) {
1121             return mb_strtoupper($string, $charset);
1122         }
1123
1124         return strtoupper($string);
1125     }
1126
1127     /**
1128      * Converts a string to lowercase.
1129      *
1130      * @param Twig_Environment $env    A Twig_Environment instance
1131      * @param string           $string A string
1132      *
1133      * @return string The lowercased string
1134      */
1135     function twig_lower_filter(Twig_Environment $env, $string)
1136     {
1137         if (null !== ($charset = $env->getCharset())) {
1138             return mb_strtolower($string, $charset);
1139         }
1140
1141         return strtolower($string);
1142     }
1143
1144     /**
1145      * Returns a titlecased string.
1146      *
1147      * @param Twig_Environment $env    A Twig_Environment instance
1148      * @param string           $string A string
1149      *
1150      * @return string The titlecased string
1151      */
1152     function twig_title_string_filter(Twig_Environment $env, $string)
1153     {
1154         if (null !== ($charset = $env->getCharset())) {
1155             return mb_convert_case($string, MB_CASE_TITLE, $charset);
1156         }
1157
1158         return ucwords(strtolower($string));
1159     }
1160
1161     /**
1162      * Returns a capitalized string.
1163      *
1164      * @param Twig_Environment $env    A Twig_Environment instance
1165      * @param string           $string A string
1166      *
1167      * @return string The capitalized string
1168      */
1169     function twig_capitalize_string_filter(Twig_Environment $env, $string)
1170     {
1171         if (null !== ($charset = $env->getCharset())) {
1172             return mb_strtoupper(mb_substr($string, 0, 1, $charset), $charset).
1173                          mb_strtolower(mb_substr($string, 1, mb_strlen($string, $charset), $charset), $charset);
1174         }
1175
1176         return ucfirst(strtolower($string));
1177     }
1178 }
1179 // and byte fallback
1180 else {
1181     /**
1182      * Returns the length of a variable.
1183      *
1184      * @param Twig_Environment $env   A Twig_Environment instance
1185      * @param mixed            $thing A variable
1186      *
1187      * @return integer The length of the value
1188      */
1189     function twig_length_filter(Twig_Environment $env, $thing)
1190     {
1191         return is_scalar($thing) ? strlen($thing) : count($thing);
1192     }
1193
1194     /**
1195      * Returns a titlecased string.
1196      *
1197      * @param Twig_Environment $env    A Twig_Environment instance
1198      * @param string           $string A string
1199      *
1200      * @return string The titlecased string
1201      */
1202     function twig_title_string_filter(Twig_Environment $env, $string)
1203     {
1204         return ucwords(strtolower($string));
1205     }
1206
1207     /**
1208      * Returns a capitalized string.
1209      *
1210      * @param Twig_Environment $env    A Twig_Environment instance
1211      * @param string           $string A string
1212      *
1213      * @return string The capitalized string
1214      */
1215     function twig_capitalize_string_filter(Twig_Environment $env, $string)
1216     {
1217         return ucfirst(strtolower($string));
1218     }
1219 }
1220
1221 /* used internally */
1222 function twig_ensure_traversable($seq)
1223 {
1224     if ($seq instanceof Traversable || is_array($seq)) {
1225         return $seq;
1226     }
1227
1228     return array();
1229 }
1230
1231 /**
1232  * Checks if a variable is empty.
1233  *
1234  * <pre>
1235  * {# evaluates to true if the foo variable is null, false, or the empty string #}
1236  * {% if foo is empty %}
1237  *     {# ... #}
1238  * {% endif %}
1239  * </pre>
1240  *
1241  * @param mixed $value A variable
1242  *
1243  * @return Boolean true if the value is empty, false otherwise
1244  */
1245 function twig_test_empty($value)
1246 {
1247     if ($value instanceof Countable) {
1248         return 0 == count($value);
1249     }
1250
1251     return '' === $value || false === $value || null === $value || array() === $value;
1252 }
1253
1254 /**
1255  * Checks if a variable is traversable.
1256  *
1257  * <pre>
1258  * {# evaluates to true if the foo variable is an array or a traversable object #}
1259  * {% if foo is traversable %}
1260  *     {# ... #}
1261  * {% endif %}
1262  * </pre>
1263  *
1264  * @param mixed $value A variable
1265  *
1266  * @return Boolean true if the value is traversable
1267  */
1268 function twig_test_iterable($value)
1269 {
1270     return $value instanceof Traversable || is_array($value);
1271 }
1272
1273 /**
1274  * Renders a template.
1275  *
1276  * @param string  $template       The template to render
1277  * @param array   $variables      The variables to pass to the template
1278  * @param Boolean $with_context   Whether to pass the current context variables or not
1279  * @param Boolean $ignore_missing Whether to ignore missing templates or not
1280  * @param Boolean $sandboxed      Whether to sandbox the template or not
1281  *
1282  * @return string The rendered template
1283  */
1284 function twig_include(Twig_Environment $env, $context, $template, $variables = array(), $withContext = true, $ignoreMissing = false, $sandboxed = false)
1285 {
1286     if ($withContext) {
1287         $variables = array_merge($context, $variables);
1288     }
1289
1290     if ($isSandboxed = $sandboxed && $env->hasExtension('sandbox')) {
1291         $sandbox = $env->getExtension('sandbox');
1292         if (!$alreadySandboxed = $sandbox->isSandboxed()) {
1293             $sandbox->enableSandbox();
1294         }
1295     }
1296
1297     try {
1298         return $env->resolveTemplate($template)->render($variables);
1299     } catch (Twig_Error_Loader $e) {
1300         if (!$ignoreMissing) {
1301             throw $e;
1302         }
1303     }
1304
1305     if ($isSandboxed && !$alreadySandboxed) {
1306         $sandbox->disableSandbox();
1307     }
1308 }
1309
1310 /**
1311  * Provides the ability to get constants from instances as well as class/global constants.
1312  *
1313  * @param string      $constant The name of the constant
1314  * @param null|object $object   The object to get the constant from
1315  *
1316  * @return string
1317  */
1318 function twig_constant($constant, $object = null)
1319 {
1320     if (null !== $object) {
1321         $constant = get_class($object).'::'.$constant;
1322     }
1323
1324     return constant($constant);
1325 }
1326
1327 /**
1328  * Batches item.
1329  *
1330  * @param array   $items An array of items
1331  * @param integer $size  The size of the batch
1332  * @param string  $fill  A string to fill missing items
1333  *
1334  * @return array
1335  */
1336 function twig_array_batch($items, $size, $fill = null)
1337 {
1338     if ($items instanceof Traversable) {
1339         $items = iterator_to_array($items, false);
1340     }
1341
1342     $size = ceil($size);
1343
1344     $result = array_chunk($items, $size, true);
1345
1346     if (null !== $fill) {
1347         $last = count($result) - 1;
1348         $result[$last] = array_merge(
1349             $result[$last],
1350             array_fill(0, $size - count($result[$last]), $fill)
1351         );
1352     }
1353
1354     return $result;
1355 }