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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of Cecil. |
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* |
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* Copyright (c) Arnaud Ligny <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Cecil\Converter; |
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use Cecil\Assets\Asset; |
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use Cecil\Assets\Image; |
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use Cecil\Builder; |
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use Cecil\Exception\RuntimeException; |
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use Cecil\Util; |
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use Highlight\Highlighter; |
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class Parsedown extends \ParsedownToC |
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{ |
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/** @var Builder */ |
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protected $builder; |
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/** {@inheritdoc} */ |
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protected $regexAttribute = '(?:[#.][-\w:\\\]+[ ]*|[-\w:\\\]+(?:=(?:["\'][^\n]*?["\']|[^\s]+)?)?[ ]*)'; |
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/** Valid a media block (image, audio or video) */ |
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protected $MarkdownMediaRegex = "~^!\[.*?\]\(.*?\)~"; |
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/** @var Highlighter */ |
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protected $highlighter; |
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public function __construct(Builder $builder, ?array $options = null) |
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{ |
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$this->builder = $builder; |
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// "insert" line block: ++text++ -> <ins>text</ins> |
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$this->InlineTypes['+'][] = 'Insert'; |
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$this->inlineMarkerList = implode('', array_keys($this->InlineTypes)); |
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$this->specialCharacters[] = '+'; |
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// Media (image, audio or video) block |
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$this->BlockTypes['!'][] = 'Media'; |
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// "notes" block |
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$this->BlockTypes[':'][] = 'Note'; |
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// code highlight |
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$this->highlighter = new Highlighter(); |
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// options |
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$options = array_merge(['selectors' => $this->builder->getConfig()->get('body.toc')], $options ?? []); |
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parent::__construct($options); |
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} |
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/** |
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* Insert inline. |
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* e.g.: ++text++ -> <ins>text</ins>. |
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*/ |
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protected function inlineInsert($Excerpt) |
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{ |
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if (!isset($Excerpt['text'][1])) { |
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return; |
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} |
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if ($Excerpt['text'][1] === '+' && preg_match('/^\+\+(?=\S)(.+?)(?<=\S)\+\+/', $Excerpt['text'], $matches)) { |
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return [ |
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'extent' => strlen($matches[0]), |
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'element' => [ |
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'name' => 'ins', |
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'text' => $matches[1], |
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'handler' => 'line', |
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], |
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]; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function inlineLink($Excerpt) |
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{ |
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$link = parent::inlineLink($Excerpt); |
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if (!isset($link)) { |
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return null; |
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} |
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// Link to a page with "page:page_id" |
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if (Util\Str::startsWith($link['element']['attributes']['href'], 'page:')) { |
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$link['element']['attributes']['href'] = new \Cecil\Assets\Url($this->builder, substr($link['element']['attributes']['href'], 5, strlen($link['element']['attributes']['href']))); |
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return $link; |
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} |
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/* |
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* Embed link? |
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*/ |
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if (!$this->builder->getConfig()->get('body.links.embed.enabled') ?? true) { |
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return $link; |
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} |
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// GitHub Gist link? |
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// https://regex101.com/r/QmCiAL/1 |
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$pattern = 'https:\/\/gist\.github.com\/[-a-zA-Z0-9_]+\/[-a-zA-Z0-9_]+'; |
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if (preg_match('/'.$pattern.'/is', (string) $link['element']['attributes']['href'], $matches)) { |
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return [ |
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'extent' => $link['extent'], |
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'element' => [ |
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'name' => 'script', |
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'text' => $link['element']['text'], |
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'attributes' => [ |
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'src' => $matches[0].'.js', |
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], |
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], |
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]; |
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} |
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// Youtube link? |
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// https://regex101.com/r/gznM1j/1 |
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$pattern = '(?:https?:\/\/)?(?:www\.)?youtu(?:\.be\/|be.com\/\S*(?:watch|embed)(?:(?:(?=\/[-a-zA-Z0-9_]{11,}(?!\S))\/)|(?:\S*v=|v\/)))([-a-zA-Z0-9_]{11,})'; |
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if (preg_match('/'.$pattern.'/is', (string) $link['element']['attributes']['href'], $matches)) { |
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$iframe = [ |
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'element' => [ |
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'name' => 'iframe', |
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'text' => $link['element']['text'], |
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'attributes' => [ |
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'width' => '560', |
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'height' => '315', |
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'title' => $link['element']['text'], |
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'src' => 'https://www.youtube.com/embed/'.$matches[1], |
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'frameborder' => '0', |
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'allow' => 'accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture', |
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'allowfullscreen' => '', |
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'style' => 'position:absolute; top:0; left:0; width:100%; height:100%; border:0', |
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], |
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], |
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]; |
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return [ |
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'extent' => $link['extent'], |
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'element' => [ |
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'name' => 'div', |
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'handler' => 'elements', |
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'text' => [ |
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$iframe['element'], |
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], |
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'attributes' => [ |
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'style' => 'position:relative; padding-bottom:56.25%; height:0; overflow:hidden', |
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], |
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], |
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]; |
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} |
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return $link; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function inlineImage($Excerpt) |
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{ |
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$image = parent::inlineImage($Excerpt); |
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if (!isset($image)) { |
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return null; |
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} |
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// remove quesry string |
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$image['element']['attributes']['src'] = $this->removeQueryString($image['element']['attributes']['src']); |
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// normalize path |
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$image['element']['attributes']['src'] = $this->normalizePath($image['element']['attributes']['src']); |
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// should be lazy loaded? |
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if ($this->builder->getConfig()->get('body.images.lazy.enabled') && !isset($image['element']['attributes']['loading'])) { |
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$image['element']['attributes']['loading'] = 'lazy'; |
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} |
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// disable remote image handling? |
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if (Util\Url::isUrl($image['element']['attributes']['src']) && !$this->builder->getConfig()->get('body.images.remote.enabled') ?? true) { |
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return $image; |
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} |
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// create asset |
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$assetOptions = ['force_slash' => false]; |
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if ($this->builder->getConfig()->get('body.images.remote.fallback.enabled')) { |
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$assetOptions += ['remote_fallback' => $this->builder->getConfig()->get('body.images.remote.fallback.path')]; |
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} |
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$asset = new Asset($this->builder, $image['element']['attributes']['src'], $assetOptions); |
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$image['element']['attributes']['src'] = $asset; |
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$width = $asset->getWidth(); |
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/** |
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* Should be resized? |
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*/ |
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$assetResized = null; |
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if (isset($image['element']['attributes']['width']) |
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&& (int) $image['element']['attributes']['width'] < $width |
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&& $this->builder->getConfig()->get('body.images.resize.enabled') |
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) { |
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$width = (int) $image['element']['attributes']['width']; |
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try { |
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$assetResized = $asset->resize($width); |
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$image['element']['attributes']['src'] = $assetResized; |
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} catch (\Exception $e) { |
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$this->builder->getLogger()->debug($e->getMessage()); |
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return $image; |
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} |
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} |
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// set width |
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if (!isset($image['element']['attributes']['width']) && $asset['type'] == 'image') { |
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$image['element']['attributes']['width'] = $width; |
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} |
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// set height |
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if (!isset($image['element']['attributes']['height']) && $asset['type'] == 'image') { |
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$image['element']['attributes']['height'] = ($assetResized ?? $asset)->getHeight(); |
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} |
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/** |
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* Should be responsive? |
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*/ |
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if ($asset['type'] == 'image' && $this->builder->getConfig()->get('body.images.responsive.enabled')) { |
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try { |
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if ($srcset = Image::buildSrcset( |
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$assetResized ?? $asset, |
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$this->builder->getConfig()->get('assets.images.responsive.widths') ?? [480, 640, 768, 1024, 1366, 1600, 1920] |
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)) { |
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$image['element']['attributes']['srcset'] = $srcset; |
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$image['element']['attributes']['sizes'] = $this->builder->getConfig()->get('assets.images.responsive.sizes.default'); |
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} |
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} catch (\Exception $e) { |
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$this->builder->getLogger()->debug($e->getMessage()); |
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} |
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} |
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return $image; |
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} |
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/** |
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* Media block support: |
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* 1. <picture>/<source> for WebP images |
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* 2. <audio> and <video> elements |
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* 3. <figure>/<figcaption> for element with a title. |
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*/ |
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protected function blockMedia($Excerpt) |
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{ |
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if (1 !== preg_match($this->MarkdownMediaRegex, $Excerpt['text'])) { |
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return; |
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} |
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$InlineImage = $this->inlineImage($Excerpt); |
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if (!isset($InlineImage)) { |
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return; |
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} |
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// clean title (and preserve raw HTML) |
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$titleRawHtml = ''; |
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if (isset($InlineImage['element']['attributes']['title'])) { |
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$titleRawHtml = $this->line($InlineImage['element']['attributes']['title']); |
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$InlineImage['element']['attributes']['title'] = strip_tags($titleRawHtml); |
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} |
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$block = $InlineImage; |
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switch ($block['element']['attributes']['alt']) { |
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case 'audio': |
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$audio = []; |
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$audio['element'] = [ |
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'name' => 'audio', |
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'handler' => 'element', |
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]; |
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$audio['element']['attributes'] = $block['element']['attributes']; |
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unset($audio['element']['attributes']['loading']); |
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$block = $audio; |
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unset($block['element']['attributes']['alt']); |
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break; |
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case 'video': |
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$video = []; |
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$video['element'] = [ |
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'name' => 'video', |
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'handler' => 'element', |
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]; |
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$video['element']['attributes'] = $block['element']['attributes']; |
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unset($video['element']['attributes']['loading']); |
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if (isset($block['element']['attributes']['poster'])) { |
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$video['element']['attributes']['poster'] = new Asset($this->builder, $block['element']['attributes']['poster'], ['force_slash' => false]); |
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} |
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$block = $video; |
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unset($block['element']['attributes']['alt']); |
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} |
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/* |
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<!-- if image has a title: a <figure> is required for <figcaption> --> |
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<figure> |
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<!-- if WebP: a <picture> is required for <source> --> |
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<picture> |
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<source type="image/webp" |
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srcset="..." |
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sizes="..." |
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> |
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<img src="..." |
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srcset="..." |
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sizes="..." |
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> |
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</picture> |
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<!-- title --> |
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<figcaption>...</figcaption> |
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</figure> |
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315
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*/ |
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// creates a <picture> used to add WebP <source> in addition to the image <img> element |
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|
if ($this->builder->getConfig()->get('body.images.webp.enabled') ?? false |
|
319
|
|
|
&& (($InlineImage['element']['attributes']['src'])['type'] == 'image' |
|
320
|
|
|
&& ($InlineImage['element']['attributes']['src'])['subtype'] != 'image/webp') |
|
321
|
|
|
) { |
|
322
|
|
|
try { |
|
323
|
|
|
// Image src must be an Asset instance |
|
324
|
|
|
if (is_string($InlineImage['element']['attributes']['src'])) { |
|
325
|
|
|
throw new RuntimeException(\sprintf('Asset "%s" can\'t be converted to WebP', $InlineImage['element']['attributes']['src'])); |
|
326
|
|
|
} |
|
327
|
|
|
// Image asset is an animated GIF |
|
328
|
|
|
if (Image::isAnimatedGif($InlineImage['element']['attributes']['src'])) { |
|
329
|
|
|
throw new RuntimeException(\sprintf('Asset "%s" is an animated GIF and can\'t be converted to WebP', $InlineImage['element']['attributes']['src'])); |
|
330
|
|
|
} |
|
331
|
|
|
$assetWebp = Image::convertTopWebp($InlineImage['element']['attributes']['src'], $this->builder->getConfig()->get('assets.images.quality') ?? 75); |
|
332
|
|
|
$srcset = ''; |
|
333
|
|
|
// build responsives WebP? |
|
334
|
|
|
if ($this->builder->getConfig()->get('body.images.responsive.enabled')) { |
|
335
|
|
|
try { |
|
336
|
|
|
$srcset = Image::buildSrcset( |
|
337
|
|
|
$assetWebp, |
|
338
|
|
|
$this->builder->getConfig()->get('assets.images.responsive.widths') ?? [480, 640, 768, 1024, 1366, 1600, 1920] |
|
339
|
|
|
); |
|
340
|
|
|
} catch (\Exception $e) { |
|
341
|
|
|
$this->builder->getLogger()->debug($e->getMessage()); |
|
342
|
|
|
} |
|
343
|
|
|
} |
|
344
|
|
|
// if not, default image as srcset |
|
345
|
|
|
if (empty($srcset)) { |
|
346
|
|
|
$srcset = (string) $assetWebp; |
|
347
|
|
|
} |
|
348
|
|
|
$PictureBlock = [ |
|
349
|
|
|
'element' => [ |
|
350
|
|
|
'name' => 'picture', |
|
351
|
|
|
'handler' => 'elements', |
|
352
|
|
|
], |
|
353
|
|
|
]; |
|
354
|
|
|
$source = [ |
|
355
|
|
|
'element' => [ |
|
356
|
|
|
'name' => 'source', |
|
357
|
|
|
'attributes' => [ |
|
358
|
|
|
'type' => 'image/webp', |
|
359
|
|
|
'srcset' => $srcset, |
|
360
|
|
|
'sizes' => $this->builder->getConfig()->get('assets.images.responsive.sizes.default'), |
|
361
|
|
|
], |
|
362
|
|
|
], |
|
363
|
|
|
]; |
|
364
|
|
|
$PictureBlock['element']['text'][] = $source['element']; |
|
365
|
|
|
$PictureBlock['element']['text'][] = $block['element']; |
|
366
|
|
|
$block = $PictureBlock; |
|
367
|
|
|
} catch (\Exception $e) { |
|
368
|
|
|
$this->builder->getLogger()->debug($e->getMessage()); |
|
369
|
|
|
} |
|
370
|
|
|
} |
|
371
|
|
|
|
|
372
|
|
|
// if there is a title: put the <img> (or <picture>) in a <figure> element to use the <figcaption> |
|
373
|
|
|
if ($this->builder->getConfig()->get('body.images.caption.enabled') && !empty($titleRawHtml)) { |
|
374
|
|
|
$FigureBlock = [ |
|
375
|
|
|
'element' => [ |
|
376
|
|
|
'name' => 'figure', |
|
377
|
|
|
'handler' => 'elements', |
|
378
|
|
|
'text' => [ |
|
379
|
|
|
$block['element'], |
|
380
|
|
|
], |
|
381
|
|
|
], |
|
382
|
|
|
]; |
|
383
|
|
|
$InlineFigcaption = [ |
|
384
|
|
|
'element' => [ |
|
385
|
|
|
'name' => 'figcaption', |
|
386
|
|
|
'allowRawHtmlInSafeMode' => true, |
|
387
|
|
|
'rawHtml' => $this->line($titleRawHtml), |
|
388
|
|
|
], |
|
389
|
|
|
]; |
|
390
|
|
|
$FigureBlock['element']['text'][] = $InlineFigcaption['element']; |
|
391
|
|
|
|
|
392
|
|
|
return $FigureBlock; |
|
393
|
|
|
} |
|
394
|
|
|
|
|
395
|
|
|
return $block; |
|
396
|
|
|
} |
|
397
|
|
|
|
|
398
|
|
|
/** |
|
399
|
|
|
* Note block-level markup. |
|
400
|
|
|
* |
|
401
|
|
|
* :::tip |
|
402
|
|
|
* **Tip:** This is an advice. |
|
403
|
|
|
* ::: |
|
404
|
|
|
* |
|
405
|
|
|
* Code inspired by https://github.com/sixlive/parsedown-alert from TJ Miller (@sixlive). |
|
406
|
|
|
*/ |
|
407
|
|
|
protected function blockNote($block) |
|
408
|
|
|
{ |
|
409
|
|
|
if (preg_match('/:::(.*)/', $block['text'], $matches)) { |
|
410
|
|
|
$block = [ |
|
411
|
|
|
'char' => ':', |
|
412
|
|
|
'element' => [ |
|
413
|
|
|
'name' => 'aside', |
|
414
|
|
|
'text' => '', |
|
415
|
|
|
'attributes' => [ |
|
416
|
|
|
'class' => 'note', |
|
417
|
|
|
], |
|
418
|
|
|
], |
|
419
|
|
|
]; |
|
420
|
|
|
if (!empty($matches[1])) { |
|
421
|
|
|
$block['element']['attributes']['class'] .= " note-{$matches[1]}"; |
|
422
|
|
|
} |
|
423
|
|
|
|
|
424
|
|
|
return $block; |
|
425
|
|
|
} |
|
426
|
|
|
} |
|
427
|
|
|
|
|
428
|
|
|
protected function blockNoteContinue($line, $block) |
|
429
|
|
|
{ |
|
430
|
|
|
if (isset($block['complete'])) { |
|
431
|
|
|
return; |
|
432
|
|
|
} |
|
433
|
|
|
if (preg_match('/:::/', $line['text'])) { |
|
434
|
|
|
$block['complete'] = true; |
|
435
|
|
|
|
|
436
|
|
|
return $block; |
|
437
|
|
|
} |
|
438
|
|
|
$block['element']['text'] .= $line['text']."\n"; |
|
439
|
|
|
|
|
440
|
|
|
return $block; |
|
441
|
|
|
} |
|
442
|
|
|
|
|
443
|
|
|
protected function blockNoteComplete($block) |
|
444
|
|
|
{ |
|
445
|
|
|
$block['element']['rawHtml'] = $this->text($block['element']['text']); |
|
446
|
|
|
unset($block['element']['text']); |
|
447
|
|
|
|
|
448
|
|
|
return $block; |
|
449
|
|
|
} |
|
450
|
|
|
|
|
451
|
|
|
/** |
|
452
|
|
|
* Apply Highlight to code blocks. |
|
453
|
|
|
*/ |
|
454
|
|
|
protected function blockFencedCodeComplete($block) |
|
455
|
|
|
{ |
|
456
|
|
|
if (!$this->builder->getConfig()->get('body.highlight.enabled')) { |
|
457
|
|
|
return $block; |
|
458
|
|
|
} |
|
459
|
|
|
if (!isset($block['element']['text']['attributes'])) { |
|
460
|
|
|
return $block; |
|
461
|
|
|
} |
|
462
|
|
|
|
|
463
|
|
|
$code = $block['element']['text']['text']; |
|
464
|
|
|
unset($block['element']['text']['text']); |
|
465
|
|
|
$languageClass = $block['element']['text']['attributes']['class']; |
|
466
|
|
|
$language = explode('-', $languageClass); |
|
467
|
|
|
$highlighted = $this->highlighter->highlight($language[1], $code); |
|
468
|
|
|
$block['element']['text']['attributes']['class'] = vsprintf('%s hljs %s', [ |
|
469
|
|
|
$languageClass, |
|
470
|
|
|
$highlighted->language, |
|
471
|
|
|
]); |
|
472
|
|
|
$block['element']['text']['rawHtml'] = $highlighted->value; |
|
473
|
|
|
$block['element']['text']['allowRawHtmlInSafeMode'] = true; |
|
474
|
|
|
|
|
475
|
|
|
return $block; |
|
476
|
|
|
} |
|
477
|
|
|
|
|
478
|
|
|
/** |
|
479
|
|
|
* {@inheritdoc} |
|
480
|
|
|
*/ |
|
481
|
|
|
protected function parseAttributeData($attributeString) |
|
482
|
|
|
{ |
|
483
|
|
|
$attributes = preg_split('/[ ]+/', $attributeString, -1, PREG_SPLIT_NO_EMPTY); |
|
484
|
|
|
$Data = []; |
|
485
|
|
|
$HtmlAtt = []; |
|
486
|
|
|
|
|
487
|
|
|
foreach ($attributes as $attribute) { |
|
488
|
|
|
switch ($attribute[0]) { |
|
489
|
|
|
case '#': // ID |
|
490
|
|
|
$Data['id'] = substr($attribute, 1); |
|
491
|
|
|
break; |
|
492
|
|
|
case '.': // Classes |
|
493
|
|
|
$classes[] = substr($attribute, 1); |
|
494
|
|
|
break; |
|
495
|
|
|
default: // Attributes |
|
496
|
|
|
parse_str($attribute, $parsed); |
|
497
|
|
|
$HtmlAtt = array_merge($HtmlAtt, $parsed); |
|
498
|
|
|
} |
|
499
|
|
|
} |
|
500
|
|
|
|
|
501
|
|
|
if (isset($classes)) { |
|
502
|
|
|
$Data['class'] = implode(' ', $classes); |
|
503
|
|
|
} |
|
504
|
|
|
if (!empty($HtmlAtt)) { |
|
505
|
|
|
foreach ($HtmlAtt as $a => $v) { |
|
506
|
|
|
$Data[$a] = trim($v, '"'); |
|
507
|
|
|
} |
|
508
|
|
|
} |
|
509
|
|
|
|
|
510
|
|
|
return $Data; |
|
511
|
|
|
} |
|
512
|
|
|
|
|
513
|
|
|
/** |
|
514
|
|
|
* Remove query string form a path/URL. |
|
515
|
|
|
*/ |
|
516
|
|
|
private function removeQueryString(string $path): string |
|
517
|
|
|
{ |
|
518
|
|
|
return strtok(trim($path), '?') ?: trim($path); |
|
519
|
|
|
} |
|
520
|
|
|
|
|
521
|
|
|
/** |
|
522
|
|
|
* Turns a path relative to static or assets into a website relative path. |
|
523
|
|
|
* |
|
524
|
|
|
* "../../assets/images/img.jpeg" |
|
525
|
|
|
* -> |
|
526
|
|
|
* "/images/img.jpeg" |
|
527
|
|
|
*/ |
|
528
|
|
|
private function normalizePath(string $path): string |
|
529
|
|
|
{ |
|
530
|
|
|
// https://regex101.com/r/Rzguzh/1 |
|
531
|
|
|
$pattern = \sprintf( |
|
532
|
|
|
'(\.\.\/)+(\b%s|%s\b)+(\/.*)', |
|
533
|
|
|
$this->builder->getConfig()->get('static.dir'), |
|
534
|
|
|
$this->builder->getConfig()->get('assets.dir') |
|
535
|
|
|
); |
|
536
|
|
|
$path = Util::joinPath($path); |
|
537
|
|
|
if (!preg_match('/'.$pattern.'/is', $path, $matches)) { |
|
538
|
|
|
return $path; |
|
539
|
|
|
} |
|
540
|
|
|
|
|
541
|
|
|
return $matches[3]; |
|
542
|
|
|
} |
|
543
|
|
|
} |
|
544
|
|
|
|
Cecilapp /
Cecil
