File manager

File manager - Edit - /home/adiance/public_html/wp-content/plugins/amp/vendor/ampproject/optimizer/src/Transformer/AmpRuntimeCss.php

Back
<?php namespace AmpProject\Optimizer\Transformer; use AmpProject\Amp; use AmpProject\Attribute; use AmpProject\Dom\Document; use AmpProject\Optimizer\Configuration\AmpRuntimeCssConfiguration; use AmpProject\Optimizer\Error; use AmpProject\Optimizer\ErrorCollection; use AmpProject\Optimizer\TransformerConfiguration; use AmpProject\RemoteGetRequest; use AmpProject\Optimizer\Transformer; use AmpProject\RuntimeVersion; use AmpProject\Tag; use DOMElement; use Exception; /** * Transformer adding https://cdn.ampproject.org/v0.css if server-side-rendering is applied (known by the presence of * <style amp-runtime> tag). AMP runtime css (v0.css) will always be inlined as it'll get automatically updated to the * latest version once the AMP runtime has loaded. * * This is ported from the NodeJS optimizer while verifying against the Go version. * * NodeJS: * @version 6f465eb24b05acf74d39541151c17b8d8d97450d * @link https://github.com/ampproject/amp-toolbox/blob/6f465eb24b05acf74d39541151c17b8d8d97450d/packages/optimizer/lib/transformers/AmpBoilerplateTransformer.js * * Go: * @version c9993b8ac4d17d1f05d3a1289956dadf3f9c370a * @link https://github.com/ampproject/amppackager/blob/c9993b8ac4d17d1f05d3a1289956dadf3f9c370a/transformer/transformers/ampruntimecss.go * * @package ampproject/optimizer / final class AmpRuntimeCss implements Transformer { /* * XPath query to fetch the <style amp-runtime> element. * * @var string / const AMP_RUNTIME_STYLE_XPATH = './/style[ @amp-runtime ]'; /* * Name of the boilerplate style file. * * @var string / const V0_CSS = 'v0.css'; /* * URL of the boilerplate style file. * * @var string / const V0_CSS_URL = Amp::CACHE_HOST . '/' . self::V0_CSS; /* * Configuration store to use. * * @var TransformerConfiguration / private $configuration; /* * Transport to use for remote requests. * * @var RemoteGetRequest / private $remoteRequest; /* * Instantiate an AmpRuntimeCss object. * * @param TransformerConfiguration $configuration Configuration store to use. * @param RemoteGetRequest $remoteRequest Transport to use for remote requests. / public function __construct(TransformerConfiguration $configuration, RemoteGetRequest $remoteRequest) { $this->configuration = $configuration; $this->remoteRequest = $remoteRequest; } /* * Apply transformations to the provided DOM document. * * @param Document $document DOM document to apply the transformations to. * @param ErrorCollection $errors Collection of errors that are collected during transformation. * @return void / public function transform(Document $document, ErrorCollection $errors) { $ampRuntimeStyle = $this->findAmpRuntimeStyle($document, $errors); if (! $ampRuntimeStyle) { return; } $this->addStaticCss($document, $ampRuntimeStyle, $errors); } /* * Find the <style amp-runtime> element. * * @param Document $document Document to find the element in. * @param ErrorCollection $errors Collection of errors that are collected during transformation. * @return DOMElement\|false DOM element for the <style amp-runtime> tag, or false if not found. / private function findAmpRuntimeStyle(Document $document, ErrorCollection $errors) { $ampRuntimeStyle = $document->xpath ->query(self::AMP_RUNTIME_STYLE_XPATH, $document->head) ->item(0); if (! $ampRuntimeStyle instanceof DOMElement) { $version = $this->configuration->get(AmpRuntimeCssConfiguration::VERSION); $errors->add(Error\CannotInlineRuntimeCss::fromMissingAmpRuntimeStyle($version)); return false; } return $ampRuntimeStyle; } /* * Add the static boilerplate CSS to the <style amp-runtime> element. * * @param Document $document Document to add the static CSS to. * @param DOMElement $ampRuntimeStyle DOM element for the <style amp-runtime> tag to add the static CSS to. * @param ErrorCollection $errors Error collection to add errors to. / private function addStaticCss(Document $document, DOMElement $ampRuntimeStyle, ErrorCollection $errors) { $version = $this->configuration->get(AmpRuntimeCssConfiguration::VERSION); // We can always inline v0.css as the AMP runtime will take care of keeping v0.css in sync. try { $this->inlineCss($ampRuntimeStyle, $version); } catch (Exception $exception) { $errors->add(Error\CannotInlineRuntimeCss::fromException($exception, $ampRuntimeStyle, $version)); $this->linkCss($document, $ampRuntimeStyle); $ampRuntimeStyle->parentNode->removeChild($ampRuntimeStyle); } } /* * Insert the boilerplate style as inline CSS. * * @param DOMElement $ampRuntimeStyle DOM element for the <style amp-runtime> tag to inline the CSS into. * @param string $version Version of the boilerplate style to use. / private function inlineCss(DOMElement $ampRuntimeStyle, $version) { // Use version passed in via params if available, otherwise fetch the current prod version. if (! empty($version)) { $v0CssUrl = $this->appendRuntimeVersion(Amp::CACHE_HOST, $version) . '/' . self::V0_CSS; } else { $v0CssUrl = self::V0_CSS_URL; $options = [ RuntimeVersion::OPTION_CANARY => $this->configuration->get(AmpRuntimeCssConfiguration::CANARY) ]; $version = (new RuntimeVersion($this->remoteRequest))->currentVersion($options); } $ampRuntimeStyle->setAttribute(Attribute::I_AMPHTML_VERSION, $version); $styles = $this->configuration->get(AmpRuntimeCssConfiguration::STYLES); if (empty($styles)) { $response = $this->remoteRequest->get($v0CssUrl); $statusCode = $response->getStatusCode(); if ($statusCode < 200 \|\| $statusCode >= 300) { return; } $styles = $response->getBody(); } $ampRuntimeStyle->textContent = $styles; } /* * Insert the boilerplate style as inline CSS. * * @param Document $document Document to link the CSS in. * @param DOMElement $ampRuntimeStyle DOM element for the <style amp-runtime> tag to inline the CSS into. / private function linkCss(Document $document, DOMElement $ampRuntimeStyle) { $cssStyleNode = $document->createElement(Tag::LINK); $cssStyleNode->setAttribute(Attribute::REL, Attribute::REL_STYLESHEET); $cssStyleNode->setAttribute(Attribute::HREF, self::V0_CSS_URL); $ampRuntimeStyle->parentNode->insertBefore($cssStyleNode, $ampRuntimeStyle); } /* * Append the runtime version to the host URL. * * @param string $host Host domain to use. * @param string $version Version to use. * @return string Runtime version URL. */ private function appendRuntimeVersion($host, $version) { return "{$host}/rtv/{$version}"; } }

| ver. 1.4 | Github | . | PHP 7.3.33 | Generation time: 0.07 | proxy | phpinfo | Settings