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<?php |
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namespace Marquage\ParsedownAnchors; |
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use ParsedownExtra; |
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use Cocur\Slugify\Slugify; |
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class ParsedownSlugified extends ParsedownExtra |
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{ |
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protected $used = []; |
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/** |
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* Overrides both Parsedown & Parsedown-extra to capture parsed headers, add a unique slug-id to each for the output |
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* @param $Line |
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* @return array|void |
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*/ |
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protected function blockHeader($Line) |
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{ |
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$Block = []; |
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if (isset($Line['text'][1])) { |
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$level = 1; |
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while (isset($Line['text'][$level]) and $Line['text'][$level] === '#') { |
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if ($level < 7) { |
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$level++; |
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} |
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} |
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$text = trim($Line['text'], '# '); |
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$Block = array( |
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'element' => [ |
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'name' => 'h' . min(6, $level), |
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'text' => $text, |
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'handler' => 'line', |
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'attributes' => [ |
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'id' => $this->slugify($text) |
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] |
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], |
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); |
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} |
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if (preg_match( |
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'/[ #]*{(' . $this->regexAttribute . '+)}[ ]*$/', |
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$Block['element']['text'], |
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$matches, |
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PREG_OFFSET_CAPTURE |
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)) { |
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$attributeString = $matches[1][0]; |
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$Block['element']['attributes'] = $this->parseAttributeData($attributeString); |
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$Block['element']['text'] = substr($Block['element']['text'], 0, $matches[0][1]); |
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} |
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return $Block; |
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} |
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/** |
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* Uses Cocur to slugify but ensures each slug is unique |
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* credit: https://github.com/caseyamcl/toc |
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* @param $text |
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* @return string |
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*/ |
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protected function slugify($text) |
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{ |
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$slugger = new Slugify(); |
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$slugged = $slugger->slugify($text); |
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$count = 1; |
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$orig = $slugged; |
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while (in_array($slugged, $this->used)) { |
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$slugged = $orig . '-' . $count; |
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$count++; |
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} |
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$this->used[] = $slugged; |
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return $slugged; |
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} |
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} |
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marquage /
parsedownanchors
