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0fe5528574
vichan/inc/lib/Twig/Extension/Core.php
Michael Foster 0fe5528574 Upgrade Twig library
2013-08-01 15:20:12 -04:00

1356 lines
44 KiB
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<?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 && $ord <= 0x9f)) {
return '&#xFFFD;';
}
/**
* Check if the current character to escape has a name entity we should
* replace it with while grabbing the hex value of the character.
*/
if (strlen($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;
}
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