Subclasses may override this method and load functions differently;
so no list of functions is available.
| public getFunction ( string $name ) : Twig_Function | false | ||
| $name | string | function name |
| return | Twig_Function | false | A Twig_Function instance or false if the function does not exists |
/**
* Initializes arrays of filters and functions.
*/
private function lazyInit()
{
$stringyClass = new \ReflectionClass('Stringy\\Stringy');
$methods = $stringyClass->getMethods(\ReflectionMethod::IS_PUBLIC);
$names = array_map(function ($value) {
return $value->getName();
}, $methods);
foreach ($names as $name) {
if (in_array($name, self::EXCLUDE_FUNCTIONS)) {
continue;
}
$method = $stringyClass->getMethod($name);
// Get the return type from the doc comment
$doc = $method->getDocComment();
if (strpos($doc, '@return bool')) {
// Don't add functions which have the same name as any already in the environment
if ($this->environment->getFunction($name)) {
continue;
}
$this->functions[$name] = new \Twig_SimpleFunction($name, function () use($name) {
return call_user_func_array(['Stringy\\StaticStringy', $name], func_get_args());
});
} else {
// Don't add filters which have the same name as any already in the environment
if ($this->environment->getFilter($name)) {
continue;
}
$this->filters[$name] = new \Twig_SimpleFilter($name, function () use($name) {
return call_user_func_array(['Stringy\\StaticStringy', $name], func_get_args());
});
}
}
}
public function htmlRespImg($html, $name, array $options = array())
{
$dom = $this->createDOMDocument($html);
$elements = $dom->getElementsByTagName('img');
if (count($elements) === 0) {
return $html;
}
// Get Extension boltresponsiveimages
$extensionName = 'boltresponsiveimages';
if (!$this->app['extensions']->isEnabled($extensionName)) {
return $html;
}
$extension = $this->app['extensions.' . $extensionName];
if ($extension == null) {
return $html;
}
// Get Twig Function respImg
$twigFunction = $this->twig->getFunction('respImg');
if (!$twigFunction) {
return $html;
}
$respImg = $twigFunction->getCallable();
// Not override sizes, if defined
if (!$options['sizes']) {
$options['sizes'] = $extension->getSizesAttrib($name);
}
foreach ($elements as $element) {
if (!$element->hasAttribute('src')) {
continue;
}
$file = $element->getAttribute('src');
$filename = Lib::safeFilename($file);
// Set options for specific image
$optionsImg = $options;
// Add width fallback to sizes because layout reasons
// Example: An editor choose a specific width
if ($element->hasAttribute('width')) {
$width = $element->getAttribute('width');
$optionsImg['sizes'][] = $width . 'px';
}
if ($element->hasAttribute('class')) {
$attrClass = $element->getAttribute('class');
$optionsImg['class'][] = $attrClass;
}
$htmlImg = (string) $respImg($filename, $name, $optionsImg);
$domImg = $this->createDOMDocument($htmlImg);
// Load the $domImg document fragment node into the current document
$newnode = $dom->importNode($domImg->documentElement, true);
// Replace current img node
$element->parentNode->replaceChild($newnode, $element);
}
$result = $dom->saveHTML();
return new \Twig_Markup($result, 'UTF-8');
}
public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
{
if ($node instanceof Twig_Node_Expression_Constant) {
// constants are marked safe for all
$this->setSafe($node, array('all'));
} elseif ($node instanceof Twig_Node_Expression_Conditional) {
// intersect safeness of both operands
$safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3')));
$this->setSafe($node, $safe);
} elseif ($node instanceof Twig_Node_Expression_Filter) {
// filter expression is safe when the filter is safe
$name = $node->getNode('filter')->getAttribute('value');
$args = $node->getNode('arguments');
if (false !== ($filter = $env->getFilter($name))) {
$this->setSafe($node, $filter->getSafe($args));
} else {
$this->setSafe($node, array());
}
} elseif ($node instanceof Twig_Node_Expression_Function) {
// function expression is safe when the function is safe
$name = $node->getNode('name')->getAttribute('name');
$args = $node->getNode('arguments');
$function = $env->getFunction($name);
if (false !== $function) {
$this->setSafe($node, $function->getSafe($args));
} else {
$this->setSafe($node, array());
}
} else {
$this->setSafe($node, array());
}
return $node;
}
/**
* Extracts formulae from filter function nodes.
*
* @return array|null The formula
*/
private function checkNode(\Twig_NodeInterface $node, \Twig_Environment $env)
{
if ($node instanceof \Twig_Node_Expression_Function) {
$name = $node->getNode('name')->getAttribute('name');
if ($env->getFunction($name) instanceof AsseticFilterFunction) {
$arguments = array();
foreach ($node->getNode('arguments') as $argument) {
$arguments[] = eval('return '.$env->compile($argument).';');
}
$invoker = $env->getExtension('assetic')->getFilterInvoker($name);
$factory = $invoker->getFactory();
$inputs = isset($arguments[0]) ? (array) $arguments[0] : array();
$filters = $invoker->getFilters();
$options = array_replace($invoker->getOptions(), isset($arguments[1]) ? $arguments[1] : array());
if (!isset($options['name'])) {
$options['name'] = $factory->generateAssetName($inputs, $filters);
}
return array($inputs, $filters, $options);
}
}
}
public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
{
if ($node instanceof Twig_Node_Expression_Constant) {
// constants are marked safe for all
$this->setSafe($node, array('all'));
} elseif ($node instanceof Twig_Node_Expression_BlockReference) {
// blocks are safe by definition
$this->setSafe($node, array('all'));
} elseif ($node instanceof Twig_Node_Expression_Parent) {
// parent block is safe by definition
$this->setSafe($node, array('all'));
} elseif ($node instanceof Twig_Node_Expression_Conditional) {
// intersect safeness of both operands
$safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3')));
$this->setSafe($node, $safe);
} elseif ($node instanceof Twig_Node_Expression_Filter) {
// filter expression is safe when the filter is safe
$name = $node->getNode('filter')->getAttribute('value');
$args = $node->getNode('arguments');
if (false !== ($filter = $env->getFilter($name))) {
$safe = $filter->getSafe($args);
if (null === $safe) {
$safe = $this->intersectSafe($this->getSafe($node->getNode('node')), $filter->getPreservesSafety());
}
$this->setSafe($node, $safe);
} else {
$this->setSafe($node, array());
}
} elseif ($node instanceof Twig_Node_Expression_Function) {
// function expression is safe when the function is safe
$name = $node->getAttribute('name');
$args = $node->getNode('arguments');
$function = $env->getFunction($name);
if (false !== $function) {
$this->setSafe($node, $function->getSafe($args));
} else {
$this->setSafe($node, array());
}
} elseif ($node instanceof Twig_Node_Expression_MethodCall) {
if ($node->getAttribute('safe')) {
$this->setSafe($node, array('all'));
} else {
$this->setSafe($node, array());
}
} elseif ($node instanceof Twig_Node_Expression_MacroCall) {
$this->setSafe($node, array('all'));
} elseif ($node instanceof Twig_Node_Expression_GetAttr && $node->getNode('node') instanceof Twig_Node_Expression_Name) {
$name = $node->getNode('node')->getAttribute('name');
// attributes on template instances are safe
if ('_self' == $name || in_array($name, $this->safeVars)) {
$this->setSafe($node, array('all'));
} else {
$this->setSafe($node, array());
}
} else {
$this->setSafe($node, array());
}
return $node;
}
public function getFunction($name)
{
if (false !== ($function = parent::getFunction($name))) {
return $function;
}
$helper = $this->view->getHelper($name);
if (null === $helper) {
return false;
}
$function = new Zwig_Function_ViewHelper($name, $helper);
$this->addFunction($name, $function);
return $function;
}
/**
* @param $asset
*
* @return mixed
*/
protected function asset($asset)
{
return call_user_func($this->twig->getFunction('asset')->getCallable(), $asset);
}
