/modules/kohana-twig/vendor/Twig-1.0/lib/Twig/Extension/Core.php
PHP | 499 lines | 361 code | 76 blank | 62 comment | 47 complexity | e0e13684f191510f662956423d896ccf MD5 | raw file
Possible License(s): BSD-3-Clause
- <?php
- /*
- * This file is part of Twig.
- *
- * (c) 2009 Fabien Potencier
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- class Twig_Extension_Core extends Twig_Extension
- {
- /**
- * Returns the token parser instance to add to the existing list.
- *
- * @return array An array of Twig_TokenParser instances
- */
- public function getTokenParsers()
- {
- return array(
- new Twig_TokenParser_For(),
- new Twig_TokenParser_If(),
- new Twig_TokenParser_Extends(),
- new Twig_TokenParser_Include(),
- new Twig_TokenParser_Block(),
- new Twig_TokenParser_Filter(),
- new Twig_TokenParser_Macro(),
- new Twig_TokenParser_Import(),
- new Twig_TokenParser_From(),
- new Twig_TokenParser_Set(),
- new Twig_TokenParser_Spaceless(),
- );
- }
- /**
- * Returns a list of filters to add to the existing list.
- *
- * @return array An array of filters
- */
- public function getFilters()
- {
- $filters = array(
- // formatting filters
- 'date' => new Twig_Filter_Function('twig_date_format_filter'),
- 'format' => new Twig_Filter_Function('sprintf'),
- 'replace' => new Twig_Filter_Function('twig_strtr'),
- // encoding
- 'url_encode' => new Twig_Filter_Function('twig_urlencode_filter'),
- 'json_encode' => new Twig_Filter_Function('json_encode'),
- // string filters
- 'title' => new Twig_Filter_Function('twig_title_string_filter', array('needs_environment' => true)),
- 'capitalize' => new Twig_Filter_Function('twig_capitalize_string_filter', array('needs_environment' => true)),
- 'upper' => new Twig_Filter_Function('strtoupper'),
- 'lower' => new Twig_Filter_Function('strtolower'),
- 'striptags' => new Twig_Filter_Function('strip_tags'),
- // array helpers
- 'join' => new Twig_Filter_Function('twig_join_filter'),
- 'reverse' => new Twig_Filter_Function('twig_reverse_filter'),
- 'length' => new Twig_Filter_Function('twig_length_filter', array('needs_environment' => true)),
- 'sort' => new Twig_Filter_Function('twig_sort_filter'),
- 'merge' => new Twig_Filter_Function('twig_array_merge'),
- // iteration and runtime
- 'default' => new Twig_Filter_Function('twig_default_filter'),
- 'keys' => new Twig_Filter_Function('twig_get_array_keys_filter'),
- // escaping
- 'escape' => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
- 'e' => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
- );
- if (function_exists('mb_get_info')) {
- $filters['upper'] = new Twig_Filter_Function('twig_upper_filter', array('needs_environment' => true));
- $filters['lower'] = new Twig_Filter_Function('twig_lower_filter', array('needs_environment' => true));
- }
- return $filters;
- }
- /**
- * Returns a list of global functions to add to the existing list.
- *
- * @return array An array of global functions
- */
- public function getFunctions()
- {
- return array(
- 'range' => new Twig_Function_Method($this, 'getRange'),
- 'constant' => new Twig_Function_Method($this, 'getConstant'),
- 'cycle' => new Twig_Function_Method($this, 'getCycle'),
- );
- }
- public function getRange($start, $end, $step = 1)
- {
- return range($start, $end, $step);
- }
- public function getConstant($value)
- {
- return constant($value);
- }
- public function getCycle($values, $i)
- {
- if (!is_array($values) && !$values instanceof ArrayAccess) {
- return $values;
- }
- return $values[$i % count($values)];
- }
- /**
- * Returns a list of filters to add to the existing list.
- *
- * @return array An array of filters
- */
- public function getTests()
- {
- return array(
- 'even' => new Twig_Test_Function('twig_test_even'),
- 'odd' => new Twig_Test_Function('twig_test_odd'),
- 'defined' => new Twig_Test_Function('twig_test_defined'),
- 'sameas' => new Twig_Test_Function('twig_test_sameas'),
- 'none' => new Twig_Test_Function('twig_test_none'),
- 'divisibleby' => new Twig_Test_Function('twig_test_divisibleby'),
- 'constant' => new Twig_Test_Function('twig_test_constant'),
- 'empty' => new Twig_Test_Function('twig_test_empty'),
- );
- }
- /**
- * Returns a list of operators to add to the existing list.
- *
- * @return array An array of operators
- */
- public function getOperators()
- {
- return array(
- array(
- 'not' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
- '-' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Neg'),
- '+' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Pos'),
- ),
- array(
- 'or' => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'and' => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '==' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '!=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '<' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '>' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '>=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '<=' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'not in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotIn', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_In', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '+' => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Add', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '-' => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Sub', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '~' => array('precedence' => 40, 'class' => 'Twig_Node_Expression_Binary_Concat', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '*' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mul', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '/' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Div', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '//' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_FloorDiv', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '%' => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'is' => array('precedence' => 100, 'callable' => array($this, 'parseTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- 'is not' => array('precedence' => 100, 'callable' => array($this, 'parseNotTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '..' => array('precedence' => 110, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
- '**' => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
- ),
- );
- }
- public function parseNotTestExpression(Twig_Parser $parser, $node)
- {
- return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($parser, $node), $parser->getCurrentToken()->getLine());
- }
- public function parseTestExpression(Twig_Parser $parser, $node)
- {
- $stream = $parser->getStream();
- $name = $stream->expect(Twig_Token::NAME_TYPE);
- $arguments = null;
- if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
- $arguments = $parser->getExpressionParser()->parseArguments();
- }
- return new Twig_Node_Expression_Test($node, $name->getValue(), $arguments, $parser->getCurrentToken()->getLine());
- }
- /**
- * Returns the name of the extension.
- *
- * @return string The extension name
- */
- public function getName()
- {
- return 'core';
- }
- }
- function twig_date_format_filter($date, $format = 'F j, Y H:i')
- {
- if (!$date instanceof DateTime) {
- $date = new DateTime((ctype_digit($date) ? '@' : '').$date);
- }
- return $date->format($format);
- }
- function twig_urlencode_filter($url, $raw = false)
- {
- if ($raw) {
- return rawurlencode($url);
- }
- return urlencode($url);
- }
- function twig_array_merge($arr1, $arr2)
- {
- if (!is_array($arr1) || !is_array($arr2)) {
- throw new Twig_Error_Runtime('The merge filter only work with arrays or hashes.');
- }
- return array_merge($arr1, $arr2);
- }
- function twig_join_filter($value, $glue = '')
- {
- return implode($glue, (array) $value);
- }
- function twig_default_filter($value, $default = '')
- {
- return twig_test_empty($value) ? $default : $value;
- }
- function twig_get_array_keys_filter($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);
- }
- function twig_reverse_filter($array)
- {
- if (is_object($array) && $array instanceof Traversable) {
- return array_reverse(iterator_to_array($array));
- }
- if (!is_array($array)) {
- return array();
- }
- return array_reverse($array);
- }
- function twig_sort_filter($array)
- {
- asort($array);
- return $array;
- }
- function twig_in_filter($value, $compare)
- {
- if (is_array($compare)) {
- return in_array($value, $compare);
- } elseif (is_string($compare)) {
- return false !== strpos($compare, (string) $value);
- } elseif (is_object($compare) && $compare instanceof Traversable) {
- return in_array($value, iterator_to_array($compare, false));
- }
- return false;
- }
- function twig_strtr($pattern, $replacements)
- {
- return str_replace(array_keys($replacements), array_values($replacements), $pattern);
- }
- /*
- * Each type specifies a way for applying a transformation to a string
- * The purpose is for the string to be "escaped" so it is suitable for
- * the format it is being displayed in.
- *
- * For example, the string: "It's required that you enter a username & password.\n"
- * If this were to be displayed as HTML it would be sensible to turn the
- * ampersand into '&' and the apostrophe into '&aps;'. However if it were
- * going to be used as a string in JavaScript to be displayed in an alert box
- * it would be right to leave the string as-is, but c-escape the apostrophe and
- * the new line.
- */
- function twig_escape_filter(Twig_Environment $env, $string, $type = 'html', $charset = null)
- {
- if (is_object($string) && $string instanceof Twig_Markup) {
- return $string;
- }
- if (!is_string($string) && !(is_object($string) && method_exists($string, '__toString'))) {
- return $string;
- }
- if (null === $charset) {
- $charset = $env->getCharset();
- }
- switch ($type) {
- case 'js':
- // escape all non-alphanumeric characters
- // into their \xHH or \uHHHH representations
- if ('UTF-8' != $charset) {
- $string = _twig_convert_encoding($string, 'UTF-8', $charset);
- }
- if (null === $string = preg_replace_callback('#[^\p{L}\p{N} ]#u', '_twig_escape_js_callback', $string)) {
- throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
- }
- if ('UTF-8' != $charset) {
- $string = _twig_convert_encoding($string, $charset, 'UTF-8');
- }
- return $string;
- case 'html':
- return htmlspecialchars($string, ENT_QUOTES, $charset);
- default:
- throw new Twig_Error_Runtime(sprintf('Invalid escape type "%s".', $type));
- }
- }
- function twig_escape_filter_is_safe(Twig_Node $filterArgs)
- {
- foreach ($filterArgs as $arg) {
- if ($arg instanceof Twig_Node_Expression_Constant) {
- return array($arg->getAttribute('value'));
- } else {
- return array();
- }
- break;
- }
- return array('html');
- }
- if (function_exists('iconv')) {
- function _twig_convert_encoding($string, $to, $from)
- {
- return iconv($from, $to, $string);
- }
- } elseif (function_exists('mb_convert_encoding')) {
- function _twig_convert_encoding($string, $to, $from)
- {
- return mb_convert_encoding($string, $to, $from);
- }
- } else {
- function _twig_convert_encoding($string, $to, $from)
- {
- throw new Twig_Error_Runtime('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
- }
- }
- function _twig_escape_js_callback($matches)
- {
- $char = $matches[0];
- // \xHH
- if (!isset($char[1])) {
- return '\\x'.substr('00'.bin2hex($char), -2);
- }
- // \uHHHH
- $char = _twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
- return '\\u'.substr('0000'.bin2hex($char), -4);
- }
- // add multibyte extensions if possible
- if (function_exists('mb_get_info')) {
- function twig_length_filter(Twig_Environment $env, $thing)
- {
- return is_scalar($thing) ? mb_strlen($thing, $env->getCharset()) : count($thing);
- }
- function twig_upper_filter(Twig_Environment $env, $string)
- {
- if (null !== ($charset = $env->getCharset())) {
- return mb_strtoupper($string, $charset);
- }
- return strtoupper($string);
- }
- function twig_lower_filter(Twig_Environment $env, $string)
- {
- if (null !== ($charset = $env->getCharset())) {
- return mb_strtolower($string, $charset);
- }
- return strtolower($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));
- }
- 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
- {
- function twig_length_filter(Twig_Environment $env, $thing)
- {
- return is_scalar($thing) ? strlen($thing) : count($thing);
- }
- function twig_title_string_filter(Twig_Environment $env, $string)
- {
- return ucwords(strtolower($string));
- }
- function twig_capitalize_string_filter(Twig_Environment $env, $string)
- {
- return ucfirst(strtolower($string));
- }
- }
- function twig_ensure_traversable($seq)
- {
- if (is_array($seq) || (is_object($seq) && $seq instanceof Traversable)) {
- return $seq;
- } else {
- return array();
- }
- }
- function twig_test_sameas($value, $test)
- {
- return $value === $test;
- }
- function twig_test_none($value)
- {
- return null === $value;
- }
- function twig_test_divisibleby($value, $num)
- {
- return 0 == $value % $num;
- }
- function twig_test_even($value)
- {
- return $value % 2 == 0;
- }
- function twig_test_odd($value)
- {
- return $value % 2 == 1;
- }
- function twig_test_constant($value, $constant)
- {
- return constant($constant) === $value;
- }
- function twig_test_defined($name, $context)
- {
- return array_key_exists($name, $context);
- }
- function twig_test_empty($value)
- {
- return null === $value || false === $value || '' === (string) $value;
- }