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<?php |
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namespace League\HTMLToMarkdown\Converter; |
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use League\HTMLToMarkdown\ElementInterface; |
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class CodeConverter implements ConverterInterface |
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{ |
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/** |
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* @param ElementInterface $element |
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* |
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* @return string |
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*/ |
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public function convert(ElementInterface $element) |
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{ |
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$language = null; |
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// Checking for language class on the code block |
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$classes = $element->getAttribute('class'); |
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if ($classes) { |
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// Since tags can have more than one class, we need to find the one that starts with 'language-' |
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$classes = explode(' ', $classes); |
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foreach ($classes as $class) { |
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if (strpos($class, 'language-') !== false) { |
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// Found one, save it as the selected language and stop looping over the classes. |
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// The space after the language avoids gluing the actual code with the language tag |
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$language = str_replace('language-', '', $class) . ' '; |
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break; |
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} |
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} |
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} |
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$markdown = ''; |
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$code = html_entity_decode($element->getChildrenAsString()); |
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// In order to remove the code tags we need to search for them and, in the case of the opening tag |
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// use a regular expression to find the tag and the other attributes it might have |
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$code = preg_replace('/<code\b[^>]*>/', '', $code); |
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$code = str_replace('</code>', '', $code); |
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// Checking if the code has multiple lines |
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$lines = preg_split('/\r\n|\r|\n/', $code); |
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View Code Duplication |
if (count($lines) > 1) { |
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// Multiple lines detected, adding three backticks and newlines |
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$markdown .= '```' . $language . "\n" . $code . "\n" . '```'; |
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} else { |
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// One line of code, wrapping it on one backtick. |
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$markdown .= '`' . $language . $code . '`'; |
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} |
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return $markdown; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getSupportedTags() |
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{ |
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return array('code'); |
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} |
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} |
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thephpleague /
html-to-markdown
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.