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<?php
/**
* Pimcore
*
* This source file is available under two different licenses:
* - GNU General Public License version 3 (GPLv3)
* - Pimcore Commercial License (PCL)
* Full copyright and license information is available in
* LICENSE.md which is distributed with this source code.
*
* @copyright Copyright (c) Pimcore GmbH (http://www.pimcore.org)
* @license http://www.pimcore.org/license GPLv3 and PCL
*/
/**
* ----------------------------------------------------------------------------------
* based on @author ZF1 Zend_View_Helper_HeadLink
* ----------------------------------------------------------------------------------
*/
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Pimcore\Twig\Extension\Templating;
use Pimcore\Event\FrontendEvents;
use Pimcore\Twig\Extension\Templating\Placeholder\CacheBusterAware;
use Pimcore\Twig\Extension\Templating\Placeholder\Container;
use Pimcore\Twig\Extension\Templating\Placeholder\ContainerService;
use Pimcore\Twig\Extension\Templating\Placeholder\Exception;
use Pimcore\Twig\Extension\Templating\Traits\WebLinksTrait;
use Symfony\Bridge\Twig\Extension\WebLinkExtension;
use Symfony\Component\EventDispatcher\GenericEvent;
/**
* HeadLink
*
* @see http://www.w3.org/TR/xhtml1/dtds.html
*
* @method $this appendAlternate($href, $type, $title, $extras)
* @method $this appendStylesheet($href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
* @method $this offsetSetAlternate($index, $href, $type, $title, $extras)
* @method $this offsetSetStylesheet($index, $href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
* @method $this prependAlternate($href, $type, $title, $extras)
* @method $this prependStylesheet($href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
* @method $this setAlternate($href, $type, $title, $extras)
* @method $this setStylesheet($href, $media = 'screen', $conditionalStylesheet = false, array $extras = array())
*
*/
class HeadLink extends CacheBusterAware
{
use WebLinksTrait;
/**
* $_validAttributes
*
* @var array
*/
protected $_itemKeys = [
'charset',
'href',
'hreflang',
'id',
'media',
'rel',
'rev',
'type',
'title',
'extras',
'sizes',
];
/**
* @var string registry key
*/
protected $_regKey = 'HeadLink';
/**
* Default attributes for generated WebLinks (HTTP/2 push).
*
* @var array
*/
protected $webLinkAttributes = ['as' => 'style'];
/**
* HeadLink constructor.
*
* Use PHP_EOL as separator
*
* @param ContainerService $containerService
* @param WebLinkExtension $webLinkExtension
*/
public function __construct(
ContainerService $containerService,
WebLinkExtension $webLinkExtension
) {
parent::__construct($containerService);
$this->webLinkExtension = $webLinkExtension;
$this->setSeparator(PHP_EOL);
}
/**
* headLink() - View Helper Method
*
* Returns current object instance. Optionally, allows passing array of
* values to build link.
*
* @return HeadLink
*/
public function __invoke(array $attributes = null, $placement = Container::APPEND)
{
if (null !== $attributes) {
$item = $this->createData($attributes);
switch ($placement) {
case Container::SET:
$this->set($item);
break;
case Container::PREPEND:
$this->prepend($item);
break;
case Container::APPEND:
default:
$this->append($item);
break;
}
}
return $this;
}
/**
* Overload method access
*
* Creates the following virtual methods:
* - appendStylesheet($href, $media, $conditionalStylesheet, $extras)
* - offsetSetStylesheet($index, $href, $media, $conditionalStylesheet, $extras)
* - prependStylesheet($href, $media, $conditionalStylesheet, $extras)
* - setStylesheet($href, $media, $conditionalStylesheet, $extras)
* - appendAlternate($href, $type, $title, $extras)
* - offsetSetAlternate($index, $href, $type, $title, $extras)
* - prependAlternate($href, $type, $title, $extras)
* - setAlternate($href, $type, $title, $extras)
*
* @param mixed $method
* @param mixed $args
*
* @return mixed
*/
public function __call($method, $args)
{
if (preg_match('/^(?P<action>set|(ap|pre)pend|offsetSet)(?P<type>Stylesheet|Alternate)$/', $method, $matches)) {
$argc = count($args);
$action = $matches['action'];
$type = $matches['type'];
$index = null;
if ('offsetSet' == $action) {
if (0 < $argc) {
$index = array_shift($args);
--$argc;
}
}
if (1 > $argc) {
throw new Exception(sprintf('%s requires at least one argument', $method));
}
if (is_array($args[0])) {
$item = $this->createData($args[0]);
} else {
$dataMethod = 'createData' . $type;
$item = $this->$dataMethod($args);
}
if ($item) {
if ('offsetSet' == $action) {
$this->offsetSet($index, $item);
} else {
$this->$action($item);
}
}
return $this;
}
return parent::__call($method, $args);
}
/**
* Check if value is valid
*
* @param mixed $value
*
* @return bool
*/
protected function _isValid($value)
{
if (!$value instanceof \stdClass) {
return false;
}
$vars = get_object_vars($value);
$keys = array_keys($vars);
$intersection = array_intersect($this->_itemKeys, $keys);
if (empty($intersection)) {
return false;
}
return true;
}
/**
* append()
*
* @param array $value
*
* @return void
*/
public function append($value)
{
if (!$this->_isValid($value)) {
throw new Exception('append() expects a data token; please use one of the custom append*() methods');
}
$this->getContainer()->append($value);
}
/**
* offsetSet()
*
* @param string|int $index
* @param array $value
*
* @return void
*/
public function offsetSet($index, $value)
{
if (!$this->_isValid($value)) {
throw new Exception('offsetSet() expects a data token; please use one of the custom offsetSet*() methods');
}
$this->getContainer()->offsetSet($index, $value);
}
/**
* prepend()
*
* @param array $value
*/
public function prepend($value)
{
if (!$this->_isValid($value)) {
throw new Exception('prepend() expects a data token; please use one of the custom prepend*() methods');
}
$this->getContainer()->prepend($value);
}
/**
* set()
*
* @param array $value
*/
public function set($value)
{
if (!$this->_isValid($value)) {
throw new Exception('set() expects a data token; please use one of the custom set*() methods');
}
$this->getContainer()->set($value);
}
/**
* Create HTML link element from data item
*
* @param \stdClass $item
*
* @return string
*/
public function itemToString(\stdClass $item)
{
$attributes = (array) $item;
$link = '<link ';
foreach ($this->_itemKeys as $itemKey) {
if (isset($attributes[$itemKey])) {
if (is_array($attributes[$itemKey])) {
foreach ($attributes[$itemKey] as $key => $value) {
$link .= sprintf('%s="%s" ', $key, ($this->_autoEscape) ? $this->_escape($value) : $value);
}
} else {
$link .= sprintf('%s="%s" ', $itemKey, ($this->_autoEscape) ? $this->_escape($attributes[$itemKey]) : $attributes[$itemKey]);
}
}
}
$link .= '/>';
if (($link == '<link />') || ($link == '<link >')) {
return '';
}
if (isset($attributes['conditionalStylesheet'])
&& !empty($attributes['conditionalStylesheet'])
&& is_string($attributes['conditionalStylesheet'])) {
if (str_replace(' ', '', $attributes['conditionalStylesheet']) === '!IE') {
$link = '<!-->' . $link . '<!--';
}
$link = '';
}
return $link;
}
/**
* Render link elements as string
*
* @param string|int $indent
*
* @return string
*/
public function toString($indent = null)
{
$this->prepareEntries();
$indent = (null !== $indent)
? $this->getWhitespace($indent)
: $this->getIndent();
$items = [];
$this->getContainer()->ksort();
foreach ($this as $item) {
$items[] = $this->itemToString($item);
}
return $indent . implode($this->_escape($this->getSeparator()) . $indent, $items);
}
/**
* prepares entries with cache buster prefix
*/
protected function prepareEntries()
{
foreach ($this as &$item) {
if ($this->isCacheBuster()) {
// adds the automatic cache buster functionality
if (isset($item->href)) {
$realFile = PIMCORE_WEB_ROOT . $item->href;
if (file_exists($realFile)) {
$item->href = '/cache-buster-' . filemtime($realFile) . $item->href;
}
}
}
$event = new GenericEvent($this, [
'item' => $item,
]);
\Pimcore::getEventDispatcher()->dispatch(FrontendEvents::VIEW_HELPER_HEAD_LINK, $event);
$source = (string)($item->href ?? '');
$itemAttributes = isset($item->extras) ? $item->extras : [];
if (isset($item->extras) && is_array($item->extras) && isset($item->extras['webLink'])) {
unset($item->extras['webLink']);
}
if (is_array($itemAttributes) && !empty($source)) {
$this->handleWebLink($item, $source, $itemAttributes);
}
}
}
/**
* Create data item for stack
*
* @param array $attributes
*
* @return \stdClass
*/
public function createData(array $attributes)
{
$data = (object) $attributes;
return $data;
}
/**
* Create item for stylesheet link item
*
* @param array $args
*
* @return \stdClass|false Returns fals if stylesheet is a duplicate
*/
public function createDataStylesheet(array $args)
{
$rel = 'stylesheet';
$type = 'text/css';
$media = 'screen';
$conditionalStylesheet = false;
$extras = [];
$href = array_shift($args);
if ($this->_isDuplicateStylesheet($href)) {
return false;
}
if (0 < count($args)) {
$media = array_shift($args);
if (is_array($media)) {
$media = implode(',', $media);
} else {
$media = (string) $media;
}
}
if (0 < count($args)) {
$conditionalStylesheet = array_shift($args);
if (!empty($conditionalStylesheet) && is_string($conditionalStylesheet)) {
$conditionalStylesheet = (string) $conditionalStylesheet;
} else {
$conditionalStylesheet = null;
}
}
if (0 < count($args) && is_array($args[0])) {
$extras = array_shift($args);
$extras = (array) $extras;
}
$attributes = compact('rel', 'type', 'href', 'media', 'conditionalStylesheet', 'extras');
return $this->createData($this->_applyExtras($attributes));
}
/**
* Is the linked stylesheet a duplicate?
*
* @param string $uri
*
* @return bool
*/
protected function _isDuplicateStylesheet($uri)
{
foreach ($this->getContainer() as $item) {
if (($item->rel == 'stylesheet') && ($item->href == $uri)) {
return true;
}
}
return false;
}
/**
* Create item for alternate link item
*
* @param array $args
*
* @return \stdClass
*/
public function createDataAlternate(array $args)
{
if (3 > count($args)) {
throw new Exception(sprintf('Alternate tags require 3 arguments; %s provided', count($args)));
}
$rel = 'alternate';
$href = array_shift($args);
$type = array_shift($args);
$title = array_shift($args);
$extras = [];
if (0 < count($args) && is_array($args[0])) {
$extras = array_shift($args);
$extras = (array) $extras;
if (isset($extras['media']) && is_array($extras['media'])) {
$extras['media'] = implode(',', $extras['media']);
}
}
$href = (string) $href;
$type = (string) $type;
$title = (string) $title;
$attributes = compact('rel', 'href', 'type', 'title', 'extras');
return $this->createData($this->_applyExtras($attributes));
}
/**
* Apply any overrides specified in the 'extras' array
*
* @param array $attributes
*
* @return array
*/
protected function _applyExtras($attributes)
{
if (isset($attributes['extras'])) {
foreach ($attributes['extras'] as $eKey => $eVal) {
if (isset($attributes[$eKey])) {
$attributes[$eKey] = $eVal;
unset($attributes['extras'][$eKey]);
}
}
}
return $attributes;
}
}
class_alias(HeadLink::class, 'Pimcore\Templating\Helper\HeadLink');

vendor/pimcore/pimcore/lib/Twig/Extension/Templating/HeadLink.php line 343