<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
final class Twig_Extension_Core extends Twig_Extension
{
private $dateFormats = array('F j, Y H:i', '%d days');
private $numberFormat = array(0, '.', ',');
private $timezone = null;
private $escapers = array();
/**
* Defines a new escaper to be used via the escape filter.
*
* @param string $strategy The strategy name that should be used as a strategy in the escape call
* @param callable $callable A valid PHP callable
*/
public function setEscaper($strategy, callable $callable)
{
$this->escapers[$strategy] = $callable;
}
/**
* Gets all defined escapers.
*
* @return callable[] An array of escapers
*/
public function getEscapers()
{
return $this->escapers;
}
/**
* 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 int $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;
}
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(),
new Twig_TokenParser_With(),
);
}
public function getFilters()
{
return array(
// formatting filters
new Twig_Filter('date', 'twig_date_format_filter', array('needs_environment' => true)),
new Twig_Filter('date_modify', 'twig_date_modify_filter', array('needs_environment' => true)),
new Twig_Filter('format', 'sprintf'),
new Twig_Filter('replace', 'twig_replace_filter'),
new Twig_Filter('number_format', 'twig_number_format_filter', array('needs_environment' => true)),
new Twig_Filter('abs', 'abs'),
new Twig_Filter('round', 'twig_round'),
// encoding
new Twig_Filter('url_encode', 'twig_urlencode_filter'),
new Twig_Filter('json_encode', 'json_encode'),
new Twig_Filter('convert_encoding', 'twig_convert_encoding'),
// string filters
new Twig_Filter('title', 'twig_title_string_filter', array('needs_environment' => true)),
new Twig_Filter('capitalize', 'twig_capitalize_string_filter', array('needs_environment' => true)),
new Twig_Filter('upper', 'twig_upper_filter', array('needs_environment' => true)),
new Twig_Filter('lower', 'twig_lower_filter', array('needs_environment' => true)),
new Twig_Filter('striptags', 'strip_tags'),
new Twig_Filter('trim', 'twig_trim_filter'),
new Twig_Filter('nl2br', 'nl2br', array('pre_escape' => 'html', 'is_safe' => array('html'))),
// array helpers
new Twig_Filter('join', 'twig_join_filter'),
new Twig_Filter('split', 'twig_split_filter', array('needs_environment' => true)),
new Twig_Filter('sort', 'twig_sort_filter'),
new Twig_Filter('merge', 'twig_array_merge'),
new Twig_Filter('batch', 'twig_array_batch'),
// string/array filters
new Twig_Filter('reverse', 'twig_reverse_filter', array('needs_environment' => true)),
new Twig_Filter('length', 'twig_length_filter', array('needs_environment' => true)),
new Twig_Filter('slice', 'twig_slice', array('needs_environment' => true)),
new Twig_Filter('first', 'twig_first', array('needs_environment' => true)),
new Twig_Filter('last', 'twig_last', array('needs_environment' => true)),
// iteration and runtime
new Twig_Filter('default', '_twig_default_filter', array('node_class' => 'Twig_Node_Expression_Filter_Default')),
new Twig_Filter('keys', 'twig_get_array_keys_filter'),
// escaping
new Twig_Filter('escape', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
new Twig_Filter('e', 'twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
);
}
public function getFunctions()
{
return array(
new Twig_Function('max', 'max'),
new Twig_Function('min', 'min'),
new Twig_Function('range', 'range'),
new Twig_Function('constant', 'twig_constant'),
new Twig_Function('cycle', 'twig_cycle'),
new Twig_Function('random', 'twig_random', array('needs_environment' => true)),
new Twig_Function('date', 'twig_date_converter', array('needs_environment' => true)),
new Twig_Function('include', 'twig_include', array('needs_environment' => true, 'needs_context' => true, 'is_safe' => array('all'))),
new Twig_Function('source', 'twig_source', array('needs_environment' => true, 'is_safe' => array('all'))),
);
}
public function getTests()
{
return array(
new Twig_Test('even', null, array('node_class' => 'Twig_Node_Expression_Test_Even')),
new Twig_Test('odd', null, array('node_class' => 'Twig_Node_Expression_Test_Odd')),
new Twig_Test('defined', null, array('node_class' => 'Twig_Node_Expression_Test_Defined')),
new Twig_Test('same as', null, array('node_class' => 'Twig_Node_Expression_Test_Sameas')),
new Twig_Test('none', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
new Twig_Test('null', null, array('node_class' => 'Twig_Node_Expression_Test_Null')),
new Twig_Test('divisible by', null, array('node_class' => 'Twig_Node_Expression_Test_Divisibleby')),
new Twig_Test('constant', null, array('node_class' => 'Twig_Node_Expression_Test_Constant')),
new Twig_Test('empty', 'twig_test_empty'),
new Twig_Test('iterable', 'twig_test_iterable'),
);
}
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),
'matches' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Matches', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
'starts with' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_StartsWith', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
'ends with' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_EndsWith', '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, 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
'is not' => array('precedence' => 100, 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
'**' => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
'??' => array('precedence' => 300, 'class' => 'Twig_Node_Expression_NullCoalesce', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
),
);
}
}
/**
* Cycles over a value.
*
* @param ArrayAccess|array $values
* @param int $position The cycle position
*
* @return string The next value in the cycle
*/
function twig_cycle($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
* @param Traversable|array|int|float|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 '';
}
$charset = $env->getCharset();
if ('UTF-8' !== $charset) {
$values = iconv($charset, 'UTF-8', $values);
}
// 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] = iconv('UTF-8', $charset, $value);
}
}
}
if (!is_array($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
* @param DateTimeInterface|DateInterval|string $date A date
* @param string|null $format The target format, null to use the default
* @param DateTimeZone|string|null|false $timezone The target timezone, null to use the default, false to leave unchanged
*
* @return string The formatted date
*/
function twig_date_format_filter(Twig_Environment $env, $date, $format = null, $timezone = null)
{
if (null === $format) {
$formats = $env->getExtension('Twig_Extension_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
* @param DateTimeInterface|string $date A date
* @param string $modifier A modifier string
*
* @return DateTimeInterface A new date object
*/
function twig_date_modify_filter(Twig_Environment $env, $date, $modifier)
{
$date = twig_date_converter($env, $date, false);
return $date->modify($modifier);
}
/**
* Converts an input to a DateTime instance.
*
* <pre>
* {% if date(user.created_at) < date('+2days') %}
* {# do something #}
* {% endif %}
* </pre>
*
* @param Twig_Environment $env
* @param DateTimeInterface|string|null $date A date or null to use the current time
* @param DateTimeZone|string|null|false $timezone The target timezone, null to use the default, false to leave unchanged
*
* @return DateTime A DateTime instance
*/
function twig_date_converter(Twig_Environment $env, $date = null, $timezone = null)
{
// determine the timezone
if (false !== $timezone) {
if (null === $timezone) {
$timezone = $env->getExtension('Twig_Extension_Core')->getTimezone();
} elseif (!$timezone instanceof DateTimeZone) {
$timezone = new DateTimeZone($timezone);
}
}
// immutable dates
if ($date instanceof DateTimeImmutable) {
return false !== $timezone ? $date->setTimezone($timezone) : $date;
}
if ($date instanceof DateTimeInterface) {
$date = clone $date;
if (false !== $timezone) {
$date->setTimezone($timezone);
}
return $date;
}
if (null === $date || 'now' === $date) {
return new DateTime($date, false !== $timezone ? $timezone : $env->getExtension('Twig_Extension_Core')->getTimezone());
}
$asString = (string) $date;
if (ctype_digit($asString) || (!empty($asString) && '-' === $asString[0] && ctype_digit(substr($asString, 1)))) {
$date = new DateTime('@'.$date);
} else {
$date = new DateTime($date, $env->getExtension('Twig_Extension_Core')->getTimezone());
}
if (false !== $timezone) {
$date->setTimezone($timezone);
}
return $date;
}
/**
* Replaces strings within a string.
*
* @param string $str String to replace in
* @param array|Traversable $from Replace values
*
* @return string
*/
function twig_replace_filter($str, $from)
{
if ($from instanceof Traversable) {
$from = iterator_to_array($from);
} elseif (!is_array($from)) {
throw new Twig_Error_Runtime(sprintf('The "replace" filter expects an array or "Traversable" as replace values, got "%s".', is_object($from) ? get_class($from) : gettype($from)));
}
return strtr($str, $from);
}
/**
* Rounds a number.
*
* @param int|float $value The value to round
* @param int|float $precision The rounding precision
* @param string $method The method to use for rounding
*
* @return int|float The rounded number
*/
function twig_round($value, $precision = 0, $method = 'common')
{
if ('common' == $method) {
return round($value, $precision);
}
if ('ceil' != $method && 'floor' != $method) {
throw new Twig_Error_Runtime('The round filter only supports the "common", "ceil", and "floor" methods.');
}
return $method($value * pow(10, $precision)) / pow(10, $precision);
}
/**
* 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
* @param mixed $number A float/int/string of the number to format
* @param int $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('Twig_Extension_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 (RFC 3986) a string as a path segment or an array as a query string.
*
* @param string|array $url A URL or an array of query parameters
*
* @return string The URL encoded value
*/
function twig_urlencode_filter($url)
{
if (is_array($url)) {
return http_build_query($url, '', '&', PHP_QUERY_RFC3986);
}
return rawurlencode($url);
}
/**
* 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|Traversable $arr1 An array
* @param array|Traversable $arr2 An array
*
* @return array The merged array
*/
function twig_array_merge($arr1, $arr2)
{
if ($arr1 instanceof Traversable) {
$arr1 = iterator_to_array($arr1);
} elseif (!is_array($arr1)) {
throw new Twig_Error_Runtime(sprintf('The merge filter only works with arrays or "Traversable", got "%s" as first argument.', gettype($arr1)));
}
if ($arr2 instanceof Traversable) {
$arr2 = iterator_to_array($arr2);
} elseif (!is_array($arr2)) {
throw new Twig_Error_Runtime(sprintf('The merge filter only works with arrays or "Traversable", got "%s" as second argument.', gettype($arr2)));
}
return array_merge($arr1, $arr2);
}
/**
* Slices a variable.
*
* @param Twig_Environment $env
* @param mixed $item A variable
* @param int $start Start of the slice
* @param int $length Size of the slice
* @param bool $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) {
while ($item instanceof IteratorAggregate) {
$item = $item->getIterator();
}
if ($start >= 0 && $length >= 0 && $item instanceof Iterator) {
try {
return iterator_to_array(new LimitIterator($item, $start, $length === null ? -1 : $length), $preserveKeys);
} catch (OutOfBoundsException $exception) {
return array();
}
}
$item = iterator_to_array($item, $preserveKeys);
}
if (is_array($item)) {
return array_slice($item, $start, $length, $preserveKeys);
}
$item = (string) $item;
return (string) mb_substr($item, $start, $length, $env->getCharset());
}
/**
* Returns the first element of the item.
*
* @param Twig_Environment $env
* @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) ? $elements : current($elements);
}
/**
* Returns the last element of the item.
*
* @param Twig_Environment $env
* @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) ? $elements : current($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 Twig_Environment $env
* @param string $value A string
* @param string $delimiter The delimiter
* @param int $limit The limit
*
* @return array The split string as an array
*/
function twig_split_filter(Twig_Environment $env, $value, $delimiter, $limit = null)
{
if (!empty($delimiter)) {
return null === $limit ? explode($delimiter, $value) : explode($delimiter, $value, $limit);
}
if ($limit <= 1) {
return preg_split('/(?<!^)(?!$)/u', $value);
}
$length = mb_strlen($value, $env->getCharset());
if ($length < $limit) {
return array($value);
}
$r = array();
for ($i = 0; $i < $length; $i += $limit) {
$r[] = mb_substr($value, $i, $limit, $env->getCharset());
}
return $r;
}
// The '_default' filter is used internally to avoid using the ternary operator
// which costs a lot for big contexts (before PHP 5.4). So, on average,
// a function call is cheaper.
/**
* @internal
*/
function _twig_default_filter($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 ($array instanceof Traversable) {
while ($array instanceof IteratorAggregate) {
$array = $array->getIterator();
}
if ($array instanceof Iterator) {
$keys = array();
$array->rewind();
while ($array->valid()) {
$keys[] = $array->key();
$array->next();
}
return $keys;
}
$keys = array();
foreach ($array as $key => $item) {
$keys[] = $key;
}
return $keys;
}
if (!is_array($array)) {
return array();
}
return array_keys($array);
}
/**
* Reverses a variable.
*
* @param Twig_Environment $env
* @param array|Traversable|string $item An array, a Traversable instance, or a string
* @param bool $preserveKeys Whether to preserve key or not
*
* @return mixed The reversed input
*/
function twig_reverse_filter(Twig_Environment $env, $item, $preserveKeys = false)
{
if ($item instanceof Traversable) {
return array_reverse(iterator_to_array($item), $preserveKeys);
}
if (is_array($item)) {
return array_reverse($item, $preserveKeys);
}
$string = (string) $item;
$charset = $env->getCharset();
if ('UTF-8' !== $charset) {
$item = iconv($charset, 'UTF-8', $string);
}
preg_match_all('/./us', $item, $matches);
$string = implode('', array_reverse($matches[0]));
if ('UTF-8' !== $charset) {
$string = iconv('UTF-8', $charset, $string);
}
return $string;
}
/**
* Sorts an array.
*
* @param array|Traversable $array
*
* @return array
*/
function twig_sort_filter($array)
{
if ($array instanceof Traversable) {
$array = iterator_to_array($array);
} elseif (!is_array($array)) {
throw new Twig_Error_Runtime(sprintf('The sort filter only works with arrays or "Traversable", got "%s".', gettype($array)));
}
asort($array);
return $array;
}
/**
* @internal
*/
function twig_in_filter($value, $compare)
{
if (is_array($compare)) {
return in_array($value, $compare, is_object($value) || is_resource($value));
} elseif (is_string($compare) && (is_string($value) || is_int($value) || is_float($value))) {
return '' === $value || false !== strpos($compare, (string) $value);
} elseif ($compare instanceof Traversable) {
if (is_object($value) || is_resource($value)) {
foreach ($compare as $item) {
if ($item === $value) {
return true;
}
}
} else {
foreach ($compare as $item) {
if ($item == $value) {
return true;
}
}
}
return false;
}
return false;
}
/**
* Returns a trimmed string.
*
* @return string
*
* @throws Twig_Error_Runtime When an invalid trimming side is used (not a string or not 'left', 'right', or 'both')
*/
function twig_trim_filter($string, $characterMask = null, $side = 'both')
{
if (null === $characterMask) {
$characterMask = " \t\n\r\0\x0B";
}
switch ($side) {
case 'both':
return trim($string, $characterMask);
case 'left':
return ltrim($string, $characterMask);
case 'right':
return rtrim($string, $characterMask);
default:
throw new Twig_Error_Runtime('Trimming side must be "left", "right" or "both".');
}
}
/**
* Escapes a string.
*
* @param Twig_Environment $env
* @param mixed $string The value to be escaped
* @param string $strategy The escaping strategy
* @param string $charset The charset
* @param bool $autoescape Whether the function is called by the auto-escaping feature (true) or by the developer (false)
*
* @return string
*/
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) $string;
} elseif (in_array($strategy, array('html', 'js', 'css', 'html_attr', 'url'))) {
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;
if (null === $htmlspecialcharsCharsets) {
if (defined('HHVM_VERSION')) {
$htmlspecialcharsCharsets = array('utf-8' => true, 'UTF-8' => true);
} else {
$htmlspecialcharsCharsets = array(
'ISO-8859-1' => true, 'ISO8859-1' => true,
'ISO-8859-15' => true, 'ISO8859-15' => true,
'utf-8' => true, 'UTF-8' => true,
'CP866' => true, 'IBM866' => true, '866' => true,
'CP1251' => true, 'WINDOWS-1251' => true, 'WIN-1251' => true,
'1251' => true,
'CP1252' => true, 'WINDOWS-1252' => true, '1252' => true,
'KOI8-R' => true, 'KOI8-RU' => true, 'KOI8R' => true,
'BIG5' => true, '950' => true,
'GB2312' => true, '936' => true,
'BIG5-HKSCS' => true,
'SHIFT_JIS' => true, 'SJIS' => true, '932' => true,
'EUC-JP' => true, 'EUCJP' => true,
'ISO8859-5' => true, 'ISO-8859-5' => true, 'MACROMAN' => true,
);
}
}
if (isset($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);
}
$string = iconv($charset, 'UTF-8', $string);
$string = htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
return iconv('UTF-8', $charset, $string);
case 'js':
// escape all non-alphanumeric characters
// into their \xHH or \uHHHH representations
if ('UTF-8' !== $charset) {
$string = iconv($charset, 'UTF-8', $string);
}
if (0 == strlen($string) ? false : 1 !== preg_match('/^./su', $string)) {
throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
}
$string = preg_replace_callback('#[^a-zA-Z0-9,\._]#Su', function ($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');
$char = strtoupper(bin2hex($char));
if (4 >= strlen($char)) {
return sprintf('\u%04s', $char);
}
return sprintf('\u%04s\u%04s', substr($char, 0, -4), substr($char, -4));
}, $string);
if ('UTF-8' !== $charset) {
$string = iconv('UTF-8', $charset, $string);
}
return $string;
case 'css':
if ('UTF-8' !== $charset) {
$string = iconv($charset, 'UTF-8', $string);
}
if (0 == strlen($string) ? false : 1 !== preg_match('/^./su', $string)) {
throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
}
$string = preg_replace_callback('#[^a-zA-Z0-9]#Su', function ($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').' ';
}, $string);
if ('UTF-8' !== $charset) {
$string = iconv('UTF-8', $charset, $string);
}
return $string;
case 'html_attr':
if ('UTF-8' !== $charset) {
$string = iconv($charset, 'UTF-8', $string);
}
if (0 == strlen($string) ? false : 1 !== preg_match('/^./su', $string)) {
throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
}
$string = preg_replace_callback('#[^a-zA-Z0-9,\.\-_]#Su', function ($matches) {
/**
* 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
*/
/*
* 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);
}, $string);
if ('UTF-8' !== $charset) {
$string = iconv('UTF-8', $charset, $string);
}
return $string;
case 'url':
return rawurlencode($string);
default:
static $escapers;
if (null === $escapers) {
$escapers = $env->getExtension('Twig_Extension_Core')->getEscapers();
}
if (isset($escapers[$strategy])) {
return $escapers[$strategy]($env, $string, $charset);
}
$validStrategies = implode(', ', array_merge(array('html', 'js', 'url', 'css', 'html_attr'), array_keys($escapers)));
throw new Twig_Error_Runtime(sprintf('Invalid escaping strategy "%s" (valid ones: %s).', $strategy, $validStrategies));
}
}
/**
* @internal
*/
function twig_escape_filter_is_safe(Twig_Node $filterArgs)
{
foreach ($filterArgs as $arg) {
if ($arg instanceof Twig_Node_Expression_Constant) {
return array($arg->getAttribute('value'));
}
return array();
}
return array('html');
}
function twig_convert_encoding($string, $to, $from)
{
return iconv($from, $to, $string);
}
/**
* Returns the length of a variable.
*
* @param Twig_Environment $env A Twig_Environment instance
* @param mixed $thing A variable
*
* @return int The length of the value
*/
function twig_length_filter(Twig_Environment $env, $thing)
{
if (is_scalar($thing)) {
return mb_strlen($thing, $env->getCharset());
}
if (method_exists($thing, '__toString') && !$thing instanceof \Countable) {
return mb_strlen((string) $thing, $env->getCharset());
}
return count($thing);
}
/**
* Converts a string to uppercase.
*
* @param Twig_Environment $env
* @param string $string A string
*
* @return string The uppercased string
*/
function twig_upper_filter(Twig_Environment $env, $string)
{
return mb_strtoupper($string, $env->getCharset());
}
/**
* Converts a string to lowercase.
*
* @param Twig_Environment $env
* @param string $string A string
*
* @return string The lowercased string
*/
function twig_lower_filter(Twig_Environment $env, $string)
{
return mb_strtolower($string, $env->getCharset());
}
/**
* Returns a titlecased string.
*
* @param Twig_Environment $env
* @param string $string A string
*
* @return string The titlecased string
*/
function twig_title_string_filter(Twig_Environment $env, $string)
{
return mb_convert_case($string, MB_CASE_TITLE, $env->getCharset());
}
/**
* Returns a capitalized string.
*
* @param Twig_Environment $env
* @param string $string A string
*
* @return string The capitalized string
*/
function twig_capitalize_string_filter(Twig_Environment $env, $string)
{
$charset = $env->getCharset();
return mb_strtoupper(mb_substr($string, 0, 1, $charset), $charset).mb_strtolower(mb_substr($string, 1, null, $charset), $charset);
}
/**
* @internal
*/
function twig_ensure_traversable($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 $value A variable
*
* @return bool true if the value is empty, false otherwise
*/
function twig_test_empty($value)
{
if ($value instanceof Countable) {
return 0 == count($value);
}
if (method_exists($value, '__toString')) {
return '' === (string) $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 $value A variable
*
* @return bool true if the value is traversable
*/
function twig_test_iterable($value)
{
return $value instanceof Traversable || is_array($value);
}
/**
* Renders a template.
*
* @param Twig_Environment $env
* @param array $context
* @param string|array $template The template to render or an array of templates to try consecutively
* @param array $variables The variables to pass to the template
* @param bool $withContext
* @param bool $ignoreMissing Whether to ignore missing templates or not
* @param bool $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)
{
$alreadySandboxed = false;
$sandbox = null;
if ($withContext) {
$variables = array_merge($context, $variables);
}
if ($isSandboxed = $sandboxed && $env->hasExtension('Twig_Extension_Sandbox')) {
$sandbox = $env->getExtension('Twig_Extension_Sandbox');
if (!$alreadySandboxed = $sandbox->isSandboxed()) {
$sandbox->enableSandbox();
}
}
$result = null;
try {
$result = $env->resolveTemplate($template)->render($variables);
} catch (Twig_Error_Loader $e) {
if (!$ignoreMissing) {
if ($isSandboxed && !$alreadySandboxed) {
$sandbox->disableSandbox();
}
throw $e;
}
} catch (Throwable $e) {
if ($isSandboxed && !$alreadySandboxed) {
$sandbox->disableSandbox();
}
throw $e;
}
if ($isSandboxed && !$alreadySandboxed) {
$sandbox->disableSandbox();
}
return $result;
}
/**
* Returns a template content without rendering it.
*
* @param Twig_Environment $env
* @param string $name The template name
* @param bool $ignoreMissing Whether to ignore missing templates or not
*
* @return string The template source
*/
function twig_source(Twig_Environment $env, $name, $ignoreMissing = false)
{
$loader = $env->getLoader();
try {
return $loader->getSourceContext($name)->getCode();
} catch (Twig_Error_Loader $e) {
if (!$ignoreMissing) {
throw $e;
}
}
}
/**
* 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);
}
/**
* Checks if a constant exists.
*
* @param string $constant The name of the constant
* @param null|object $object The object to get the constant from
*
* @return bool
*/
function twig_constant_is_defined($constant, $object = null)
{
if (null !== $object) {
$constant = get_class($object).'::'.$constant;
}
return defined($constant);
}
/**
* Batches item.
*
* @param array $items An array of items
* @param int $size The size of the batch
* @param mixed $fill A value used to fill missing items
*
* @return array
*/
function twig_array_batch($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 !== $fill && !empty($result)) {
$last = count($result) - 1;
if ($fillCount = $size - count($result[$last])) {
$result[$last] = array_merge(
$result[$last],
array_fill(0, $fillCount, $fill)
);
}
}
return $result;
}
/**
* Returns the attribute value for a given array/object.
*
* @param mixed $object The object or array from where to get the item
* @param mixed $item The item to get from the array or object
* @param array $arguments An array of arguments to pass if the item is an object method
* @param string $type The type of attribute (@see Twig_Template constants)
* @param bool $isDefinedTest Whether this is only a defined check
* @param bool $ignoreStrictCheck Whether to ignore the strict attribute check or not
*
* @return mixed The attribute value, or a Boolean when $isDefinedTest is true, or null when the attribute is not set and $ignoreStrictCheck is true
*
* @throws Twig_Error_Runtime if the attribute does not exist and Twig is running in strict mode and $isDefinedTest is false
*
* @internal
*/
function twig_get_attribute(Twig_Environment $env, Twig_Source $source, $object, $item, array $arguments = array(), $type = Twig_Template::ANY_CALL, $isDefinedTest = false, $ignoreStrictCheck = false)
{
static $cache = array();
// array
if (Twig_Template::METHOD_CALL !== $type) {
$arrayItem = is_bool($item) || is_float($item) ? (int) $item : $item;
if ((is_array($object) && (isset($object[$arrayItem]) || array_key_exists($arrayItem, $object)))
|| ($object instanceof ArrayAccess && isset($object[$arrayItem]))
) {
if ($isDefinedTest) {
return true;
}
return $object[$arrayItem];
}
if (Twig_Template::ARRAY_CALL === $type || !is_object($object)) {
if ($isDefinedTest) {
return false;
}
if ($ignoreStrictCheck || !$env->isStrictVariables()) {
return;
}
if ($object instanceof ArrayAccess) {
$message = sprintf('Key "%s" in object with ArrayAccess of class "%s" does not exist.', $arrayItem, get_class($object));
} elseif (is_object($object)) {
$message = sprintf('Impossible to access a key "%s" on an object of class "%s" that does not implement ArrayAccess interface.', $item, get_class($object));
} elseif (is_array($object)) {
if (empty($object)) {
$message = sprintf('Key "%s" does not exist as the array is empty.', $arrayItem);
} else {
$message = sprintf('Key "%s" for array with keys "%s" does not exist.', $arrayItem, implode(', ', array_keys($object)));
}
} elseif (Twig_Template::ARRAY_CALL === $type) {
if (null === $object) {
$message = sprintf('Impossible to access a key ("%s") on a null variable.', $item);
} else {
$message = sprintf('Impossible to access a key ("%s") on a %s variable ("%s").', $item, gettype($object), $object);
}
} elseif (null === $object) {
$message = sprintf('Impossible to access an attribute ("%s") on a null variable.', $item);
} else {
$message = sprintf('Impossible to access an attribute ("%s") on a %s variable ("%s").', $item, gettype($object), $object);
}
throw new Twig_Error_Runtime($message, -1, $source);
}
}
if (!is_object($object)) {
if ($isDefinedTest) {
return false;
}
if ($ignoreStrictCheck || !$env->isStrictVariables()) {
return;
}
if (null === $object) {
$message = sprintf('Impossible to invoke a method ("%s") on a null variable.', $item);
} else {
$message = sprintf('Impossible to invoke a method ("%s") on a %s variable ("%s").', $item, gettype($object), $object);
}
throw new Twig_Error_Runtime($message, -1, $source);
}
if ($object instanceof Twig_Template) {
throw new Twig_Error_Runtime('Accessing Twig_Template attributes is forbidden.');
}
// object property
if (Twig_Template::METHOD_CALL !== $type) {
if (isset($object->$item) || array_key_exists((string) $item, $object)) {
if ($isDefinedTest) {
return true;
}
if ($env->hasExtension('Twig_Extension_Sandbox')) {
$env->getExtension('Twig_Extension_Sandbox')->checkPropertyAllowed($object, $item);
}
return $object->$item;
}
}
$class = get_class($object);
// object method
// precedence: getXxx() > isXxx() > hasXxx()
if (!isset($cache[$class])) {
$methods = get_class_methods($object);
sort($methods);
$lcMethods = array_map('strtolower', $methods);
$classCache = array();
foreach ($methods as $i => $method) {
$classCache[$method] = $method;
$classCache[$lcName = $lcMethods[$i]] = $method;
if ('g' === $lcName[0] && 0 === strpos($lcName, 'get')) {
$name = substr($method, 3);
$lcName = substr($lcName, 3);
} elseif ('i' === $lcName[0] && 0 === strpos($lcName, 'is')) {
$name = substr($method, 2);
$lcName = substr($lcName, 2);
} elseif ('h' === $lcName[0] && 0 === strpos($lcName, 'has')) {
$name = substr($method, 3);
$lcName = substr($lcName, 3);
if (in_array('is'.$lcName, $lcMethods)) {
continue;
}
} else {
continue;
}
if (!isset($classCache[$name])) {
$classCache[$name] = $method;
}
if (!isset($classCache[$lcName])) {
$classCache[$lcName] = $method;
}
}
$cache[$class] = $classCache;
}
$call = false;
if (isset($cache[$class][$item])) {
$method = $cache[$class][$item];
} elseif (isset($cache[$class][$lcItem = strtolower($item)])) {
$method = $cache[$class][$lcItem];
} elseif (isset($cache[$class]['__call'])) {
$method = $item;
$call = true;
} else {
if ($isDefinedTest) {
return false;
}
if ($ignoreStrictCheck || !$env->isStrictVariables()) {
return;
}
throw new Twig_Error_Runtime(sprintf('Neither the property "%1$s" nor one of the methods "%1$s()", "get%1$s()"/"is%1$s()"/"has%1$s()" or "__call()" exist and have public access in class "%2$s".', $item, $class), -1, $source);
}
if ($isDefinedTest) {
return true;
}
if ($env->hasExtension('Twig_Extension_Sandbox')) {
$env->getExtension('Twig_Extension_Sandbox')->checkMethodAllowed($object, $method);
}
// Some objects throw exceptions when they have __call, and the method we try
// to call is not supported. If ignoreStrictCheck is true, we should return null.
try {
$ret = $object->$method(...$arguments);
} catch (BadMethodCallException $e) {
if ($call && ($ignoreStrictCheck || !$env->isStrictVariables())) {
return;
}
throw $e;
}
return $ret;
}
|