X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=vendor%2Ftwig%2Ftwig%2Flib%2FTwig%2FTemplate.php;fp=vendor%2Ftwig%2Ftwig%2Flib%2FTwig%2FTemplate.php;h=f1855f1173f96242ef5844f08a5ebb4c0e0c07f7;hp=0000000000000000000000000000000000000000;hb=a2bd1bf0c2c1f1a17d188f4dc0726a45494cefae;hpb=57c063afa3f66b07c4bbddc2d6129a96d90f0aad diff --git a/vendor/twig/twig/lib/Twig/Template.php b/vendor/twig/twig/lib/Twig/Template.php new file mode 100644 index 000000000..f1855f117 --- /dev/null +++ b/vendor/twig/twig/lib/Twig/Template.php @@ -0,0 +1,701 @@ +load() + * instead, which returns an instance of Twig_TemplateWrapper. + * + * @author Fabien Potencier + * + * @internal + */ +abstract class Twig_Template implements Twig_TemplateInterface +{ + /** + * @internal + */ + protected static $cache = array(); + + protected $parent; + protected $parents = array(); + protected $env; + protected $blocks = array(); + protected $traits = array(); + + public function __construct(Twig_Environment $env) + { + $this->env = $env; + } + + /** + * @internal this method will be removed in 2.0 and is only used internally to provide an upgrade path from 1.x to 2.0 + */ + public function __toString() + { + return $this->getTemplateName(); + } + + /** + * Returns the template name. + * + * @return string The template name + */ + abstract public function getTemplateName(); + + /** + * Returns debug information about the template. + * + * @return array Debug information + * + * @internal + */ + public function getDebugInfo() + { + return array(); + } + + /** + * Returns the template source code. + * + * @return string The template source code + * + * @deprecated since 1.27 (to be removed in 2.0). Use getSourceContext() instead + */ + public function getSource() + { + @trigger_error('The '.__METHOD__.' method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', E_USER_DEPRECATED); + + return ''; + } + + /** + * Returns information about the original template source code. + * + * @return Twig_Source + */ + public function getSourceContext() + { + return new Twig_Source('', $this->getTemplateName()); + } + + /** + * @deprecated since 1.20 (to be removed in 2.0) + */ + public function getEnvironment() + { + @trigger_error('The '.__METHOD__.' method is deprecated since version 1.20 and will be removed in 2.0.', E_USER_DEPRECATED); + + return $this->env; + } + + /** + * Returns the parent template. + * + * This method is for internal use only and should never be called + * directly. + * + * @param array $context + * + * @return Twig_TemplateInterface|false The parent template or false if there is no parent + * + * @internal + */ + public function getParent(array $context) + { + if (null !== $this->parent) { + return $this->parent; + } + + try { + $parent = $this->doGetParent($context); + + if (false === $parent) { + return false; + } + + if ($parent instanceof self) { + return $this->parents[$parent->getTemplateName()] = $parent; + } + + if (!isset($this->parents[$parent])) { + $this->parents[$parent] = $this->loadTemplate($parent); + } + } catch (Twig_Error_Loader $e) { + $e->setSourceContext(null); + $e->guess(); + + throw $e; + } + + return $this->parents[$parent]; + } + + protected function doGetParent(array $context) + { + return false; + } + + public function isTraitable() + { + return true; + } + + /** + * Displays a parent block. + * + * This method is for internal use only and should never be called + * directly. + * + * @param string $name The block name to display from the parent + * @param array $context The context + * @param array $blocks The current set of blocks + * + * @internal + */ + public function displayParentBlock($name, array $context, array $blocks = array()) + { + $name = (string) $name; + + if (isset($this->traits[$name])) { + $this->traits[$name][0]->displayBlock($name, $context, $blocks, false); + } elseif (false !== $parent = $this->getParent($context)) { + $parent->displayBlock($name, $context, $blocks, false); + } else { + throw new Twig_Error_Runtime(sprintf('The template has no parent and no traits defining the "%s" block.', $name), -1, $this->getSourceContext()); + } + } + + /** + * Displays a block. + * + * This method is for internal use only and should never be called + * directly. + * + * @param string $name The block name to display + * @param array $context The context + * @param array $blocks The current set of blocks + * @param bool $useBlocks Whether to use the current set of blocks + * + * @internal + */ + public function displayBlock($name, array $context, array $blocks = array(), $useBlocks = true) + { + $name = (string) $name; + + if ($useBlocks && isset($blocks[$name])) { + $template = $blocks[$name][0]; + $block = $blocks[$name][1]; + } elseif (isset($this->blocks[$name])) { + $template = $this->blocks[$name][0]; + $block = $this->blocks[$name][1]; + } else { + $template = null; + $block = null; + } + + // avoid RCEs when sandbox is enabled + if (null !== $template && !$template instanceof self) { + throw new LogicException('A block must be a method on a Twig_Template instance.'); + } + + if (null !== $template) { + try { + $template->$block($context, $blocks); + } catch (Twig_Error $e) { + if (!$e->getSourceContext()) { + $e->setSourceContext($template->getSourceContext()); + } + + // this is mostly useful for Twig_Error_Loader exceptions + // see Twig_Error_Loader + if (false === $e->getTemplateLine()) { + $e->setTemplateLine(-1); + $e->guess(); + } + + throw $e; + } catch (Exception $e) { + throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $template->getSourceContext(), $e); + } + } elseif (false !== $parent = $this->getParent($context)) { + $parent->displayBlock($name, $context, array_merge($this->blocks, $blocks), false); + } else { + @trigger_error(sprintf('Silent display of undefined block "%s" in template "%s" is deprecated since version 1.29 and will throw an exception in 2.0. Use the "block(\'%s\') is defined" expression to test for block existence.', $name, $this->getTemplateName(), $name), E_USER_DEPRECATED); + } + } + + /** + * Renders a parent block. + * + * This method is for internal use only and should never be called + * directly. + * + * @param string $name The block name to render from the parent + * @param array $context The context + * @param array $blocks The current set of blocks + * + * @return string The rendered block + * + * @internal + */ + public function renderParentBlock($name, array $context, array $blocks = array()) + { + ob_start(); + $this->displayParentBlock($name, $context, $blocks); + + return ob_get_clean(); + } + + /** + * Renders a block. + * + * This method is for internal use only and should never be called + * directly. + * + * @param string $name The block name to render + * @param array $context The context + * @param array $blocks The current set of blocks + * @param bool $useBlocks Whether to use the current set of blocks + * + * @return string The rendered block + * + * @internal + */ + public function renderBlock($name, array $context, array $blocks = array(), $useBlocks = true) + { + ob_start(); + $this->displayBlock($name, $context, $blocks, $useBlocks); + + return ob_get_clean(); + } + + /** + * Returns whether a block exists or not in the current context of the template. + * + * This method checks blocks defined in the current template + * or defined in "used" traits or defined in parent templates. + * + * @param string $name The block name + * @param array $context The context + * @param array $blocks The current set of blocks + * + * @return bool true if the block exists, false otherwise + * + * @internal + */ + public function hasBlock($name, array $context = null, array $blocks = array()) + { + if (null === $context) { + @trigger_error('The '.__METHOD__.' method is internal and should never be called; calling it directly is deprecated since version 1.28 and won\'t be possible anymore in 2.0.', E_USER_DEPRECATED); + + return isset($this->blocks[(string) $name]); + } + + if (isset($blocks[$name])) { + return $blocks[$name][0] instanceof self; + } + + if (isset($this->blocks[$name])) { + return true; + } + + if (false !== $parent = $this->getParent($context)) { + return $parent->hasBlock($name, $context); + } + + return false; + } + + /** + * Returns all block names in the current context of the template. + * + * This method checks blocks defined in the current template + * or defined in "used" traits or defined in parent templates. + * + * @param array $context The context + * @param array $blocks The current set of blocks + * + * @return array An array of block names + * + * @internal + */ + public function getBlockNames(array $context = null, array $blocks = array()) + { + if (null === $context) { + @trigger_error('The '.__METHOD__.' method is internal and should never be called; calling it directly is deprecated since version 1.28 and won\'t be possible anymore in 2.0.', E_USER_DEPRECATED); + + return array_keys($this->blocks); + } + + $names = array_merge(array_keys($blocks), array_keys($this->blocks)); + + if (false !== $parent = $this->getParent($context)) { + $names = array_merge($names, $parent->getBlockNames($context)); + } + + return array_unique($names); + } + + protected function loadTemplate($template, $templateName = null, $line = null, $index = null) + { + try { + if (is_array($template)) { + return $this->env->resolveTemplate($template); + } + + if ($template instanceof self) { + return $template; + } + + if ($template instanceof Twig_TemplateWrapper) { + return $template; + } + + return $this->env->loadTemplate($template, $index); + } catch (Twig_Error $e) { + if (!$e->getSourceContext()) { + $e->setSourceContext($templateName ? new Twig_Source('', $templateName) : $this->getSourceContext()); + } + + if ($e->getTemplateLine()) { + throw $e; + } + + if (!$line) { + $e->guess(); + } else { + $e->setTemplateLine($line); + } + + throw $e; + } + } + + /** + * Returns all blocks. + * + * This method is for internal use only and should never be called + * directly. + * + * @return array An array of blocks + * + * @internal + */ + public function getBlocks() + { + return $this->blocks; + } + + public function display(array $context, array $blocks = array()) + { + $this->displayWithErrorHandling($this->env->mergeGlobals($context), array_merge($this->blocks, $blocks)); + } + + public function render(array $context) + { + $level = ob_get_level(); + ob_start(); + try { + $this->display($context); + } catch (Exception $e) { + while (ob_get_level() > $level) { + ob_end_clean(); + } + + throw $e; + } catch (Throwable $e) { + while (ob_get_level() > $level) { + ob_end_clean(); + } + + throw $e; + } + + return ob_get_clean(); + } + + protected function displayWithErrorHandling(array $context, array $blocks = array()) + { + try { + $this->doDisplay($context, $blocks); + } catch (Twig_Error $e) { + if (!$e->getSourceContext()) { + $e->setSourceContext($this->getSourceContext()); + } + + // this is mostly useful for Twig_Error_Loader exceptions + // see Twig_Error_Loader + if (false === $e->getTemplateLine()) { + $e->setTemplateLine(-1); + $e->guess(); + } + + throw $e; + } catch (Exception $e) { + throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $this->getSourceContext(), $e); + } + } + + /** + * Auto-generated method to display the template with the given context. + * + * @param array $context An array of parameters to pass to the template + * @param array $blocks An array of blocks to pass to the template + */ + abstract protected function doDisplay(array $context, array $blocks = array()); + + /** + * Returns a variable from the context. + * + * This method is for internal use only and should never be called + * directly. + * + * This method should not be overridden in a sub-class as this is an + * implementation detail that has been introduced to optimize variable + * access for versions of PHP before 5.4. This is not a way to override + * the way to get a variable value. + * + * @param array $context The context + * @param string $item The variable to return from the context + * @param bool $ignoreStrictCheck Whether to ignore the strict variable check or not + * + * @return mixed The content of the context variable + * + * @throws Twig_Error_Runtime if the variable does not exist and Twig is running in strict mode + * + * @internal + */ + final protected function getContext($context, $item, $ignoreStrictCheck = false) + { + if (!array_key_exists($item, $context)) { + if ($ignoreStrictCheck || !$this->env->isStrictVariables()) { + return; + } + + throw new Twig_Error_Runtime(sprintf('Variable "%s" does not exist.', $item), -1, $this->getSourceContext()); + } + + return $context[$item]; + } + + /** + * 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 $isDefinedTest is false + * + * @internal + */ + protected function getAttribute($object, $item, array $arguments = array(), $type = self::ANY_CALL, $isDefinedTest = false, $ignoreStrictCheck = false) + { + // array + if (self::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 (self::ARRAY_CALL === $type || !is_object($object)) { + if ($isDefinedTest) { + return false; + } + + if ($ignoreStrictCheck || !$this->env->isStrictVariables()) { + return; + } + + if ($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 (self::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, $this->getSourceContext()); + } + } + + if (!is_object($object)) { + if ($isDefinedTest) { + return false; + } + + if ($ignoreStrictCheck || !$this->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, $this->getSourceContext()); + } + + // object property + if (self::METHOD_CALL !== $type && !$object instanceof self) { // Twig_Template does not have public properties, and we don't want to allow access to internal ones + if (isset($object->$item) || array_key_exists((string) $item, $object)) { + if ($isDefinedTest) { + return true; + } + + if ($this->env->hasExtension('Twig_Extension_Sandbox')) { + $this->env->getExtension('Twig_Extension_Sandbox')->checkPropertyAllowed($object, $item); + } + + return $object->$item; + } + } + + $class = get_class($object); + + // object method + if (!isset(self::$cache[$class])) { + // get_class_methods returns all methods accessible in the scope, but we only want public ones to be accessible in templates + if ($object instanceof self) { + $ref = new ReflectionClass($class); + $methods = array(); + + foreach ($ref->getMethods(ReflectionMethod::IS_PUBLIC) as $refMethod) { + // Accessing the environment from templates is forbidden to prevent untrusted changes to the environment + if ('getenvironment' !== strtolower($refMethod->name)) { + $methods[] = $refMethod->name; + } + } + } else { + $methods = get_class_methods($object); + } + // sort values to have consistent behavior, so that "get" methods win precedence over "is" methods + sort($methods); + + $cache = array(); + + foreach ($methods as $method) { + $cache[$method] = $method; + $cache[$lcName = strtolower($method)] = $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); + } else { + continue; + } + + if (!isset($cache[$name])) { + $cache[$name] = $method; + } + if (!isset($cache[$lcName])) { + $cache[$lcName] = $method; + } + } + self::$cache[$class] = $cache; + } + + $call = false; + if (isset(self::$cache[$class][$item])) { + $method = self::$cache[$class][$item]; + } elseif (isset(self::$cache[$class][$lcItem = strtolower($item)])) { + $method = self::$cache[$class][$lcItem]; + } elseif (isset(self::$cache[$class]['__call'])) { + $method = $item; + $call = true; + } else { + if ($isDefinedTest) { + return false; + } + + if ($ignoreStrictCheck || !$this->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()" or "__call()" exist and have public access in class "%2$s".', $item, $class), -1, $this->getSourceContext()); + } + + if ($isDefinedTest) { + return true; + } + + if ($this->env->hasExtension('Twig_Extension_Sandbox')) { + $this->env->getExtension('Twig_Extension_Sandbox')->checkMethodAllowed($object, $method); + } + + // Some objects throw exceptions when they have __call, and the method we try + // to call is not supported. If ignoreStrictCheck is true, we should return null. + try { + if (!$arguments) { + $ret = $object->$method(); + } else { + $ret = call_user_func_array(array($object, $method), $arguments); + } + } catch (BadMethodCallException $e) { + if ($call && ($ignoreStrictCheck || !$this->env->isStrictVariables())) { + return; + } + throw $e; + } + + // @deprecated in 1.28 + if ($object instanceof Twig_TemplateInterface) { + $self = $object->getTemplateName() === $this->getTemplateName(); + $message = sprintf('Calling "%s" on template "%s" from template "%s" is deprecated since version 1.28 and won\'t be supported anymore in 2.0.', $item, $object->getTemplateName(), $this->getTemplateName()); + if ('renderBlock' === $method || 'displayBlock' === $method) { + $message .= sprintf(' Use block("%s"%s) instead).', $arguments[0], $self ? '' : ', template'); + } elseif ('hasBlock' === $method) { + $message .= sprintf(' Use "block("%s"%s) is defined" instead).', $arguments[0], $self ? '' : ', template'); + } elseif ('render' === $method || 'display' === $method) { + $message .= sprintf(' Use include("%s") instead).', $object->getTemplateName()); + } + @trigger_error($message, E_USER_DEPRECATED); + + return $ret === '' ? '' : new Twig_Markup($ret, $this->env->getCharset()); + } + + return $ret; + } +}