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<?php |
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/** |
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* This file is part of the Cecil/Cecil package. |
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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\Builder; |
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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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/** Regex to verify there is an image in <figure> block */ |
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private $MarkdownImageRegex = "~^!\[.*?\]\(.*?\)~"; |
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public function __construct(Builder $builder) |
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{ |
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$this->builder = $builder; |
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if ($this->builder->getConfig()->get('body.images.caption.enabled')) { |
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$this->BlockTypes['!'][] = 'Figure'; |
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} |
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parent::__construct(['selectors' => $this->builder->getConfig()->get('body.toc')]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function inlineImage($excerpt) |
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{ |
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$image = parent::inlineImage($excerpt); |
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if (!isset($image)) { |
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return null; |
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} |
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$image['element']['attributes']['src'] = $imageSource = trim($this->removeQuery($image['element']['attributes']['src'])); |
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$asset = new Asset($this->builder, $imageSource); |
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$width = $asset->getWidth(); |
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if ($width === false) { |
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return $image; |
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} |
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$image['element']['attributes']['src'] = $asset; |
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/** |
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* Should be lazy loaded? |
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*/ |
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if ($this->builder->getConfig()->get('body.images.lazy.enabled')) { |
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$image['element']['attributes']['loading'] = 'lazy'; |
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} |
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/** |
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* Should be resized? |
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*/ |
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$imageResized = null; |
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if (array_key_exists('width', $image['element']['attributes']) |
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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) $image['element']['attributes']['width']; |
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try { |
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$imageResized = $asset->resize($width); |
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} catch (\Exception $e) { |
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$this->builder->getLogger()->debug($e->getMessage()); |
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return $image; |
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} |
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$image['element']['attributes']['src'] = $imageResized; |
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} |
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// set width |
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if (!array_key_exists('width', $image['element']['attributes'])) { |
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$image['element']['attributes']['width'] = $width; |
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} |
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// set height |
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if (!array_key_exists('height', $image['element']['attributes'])) { |
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$image['element']['attributes']['height'] = $asset->getHeight(); |
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} |
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/** |
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* Should be responsive? |
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*/ |
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if ($this->builder->getConfig()->get('body.images.responsive.enabled')) { |
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$steps = $this->builder->getConfig()->get('body.images.responsive.width.steps'); |
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$wMin = $this->builder->getConfig()->get('body.images.responsive.width.min'); |
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$wMax = $this->builder->getConfig()->get('body.images.responsive.width.max'); |
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$srcset = ''; |
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for ($i = 1; $i <= $steps; $i++) { |
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$w = ceil($wMin * $i); |
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if ($w > $width || $w > $wMax) { |
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break; |
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} |
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$a = new Asset($this->builder, $imageSource); |
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$img = $a->resize(intval($w)); |
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$srcset .= sprintf('%s %sw', $img, $w); |
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if ($i < $steps) { |
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$srcset .= ', '; |
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} |
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} |
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$imageDefault = $imageResized ?? $asset; |
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$srcset .= sprintf('%s %sw', $imageDefault, $width); |
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// ie: srcset="/img-480.jpg 480w, /img-800.jpg 800w" |
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$image['element']['attributes']['srcset'] = $srcset; |
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$image['element']['attributes']['sizes'] = $this->builder->getConfig()->get('body.images.responsive.sizes.default'); |
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} |
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return $image; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function parseAttributeData($attributeString) |
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{ |
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$attributes = preg_split('/[ ]+/', $attributeString, -1, PREG_SPLIT_NO_EMPTY); |
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$Data = []; |
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$HtmlAtt = []; |
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foreach ($attributes as $attribute) { |
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switch ($attribute[0]) { |
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case '#': // ID |
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$Data['id'] = substr($attribute, 1); |
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break; |
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case '.': // Classes |
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$classes[] = substr($attribute, 1); |
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break; |
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default: // Attributes |
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parse_str($attribute, $parsed); |
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$HtmlAtt = array_merge($HtmlAtt, $parsed); |
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} |
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} |
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if (isset($classes)) { |
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$Data['class'] = implode(' ', $classes); |
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} |
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if (!empty($HtmlAtt)) { |
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foreach ($HtmlAtt as $a => $v) { |
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$Data[$a] = trim($v, '"'); |
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} |
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} |
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return $Data; |
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} |
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/** |
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* Add caption to <figure> block. |
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*/ |
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protected function blockFigure($Line) |
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{ |
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if (1 !== preg_match($this->MarkdownImageRegex, $Line['text'])) { |
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return; |
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} |
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$InlineImage = $this->inlineImage($Line); |
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if (!isset($InlineImage) || empty($InlineImage['element']['attributes']['title'])) { |
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return; |
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} |
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$FigureBlock = [ |
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'element' => [ |
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'name' => 'figure', |
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'handler' => 'elements', |
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'text' => [ |
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$InlineImage['element'], |
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], |
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], |
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]; |
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$InlineFigcaption = [ |
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'element' => [ |
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'name' => 'figcaption', |
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'text' => $InlineImage['element']['attributes']['title'], |
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], |
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]; |
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$FigureBlock['element']['text'][] = $InlineFigcaption['element']; |
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return $FigureBlock; |
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} |
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/** |
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* Removes query string from URL. |
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*/ |
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private function removeQuery(string $path): string |
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{ |
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return strtok($path, '?'); |
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} |
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} |
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Cecilapp /
Cecil
