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<?php |
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namespace League\HTMLToMarkdown\Converter; |
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use League\HTMLToMarkdown\Configuration; |
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use League\HTMLToMarkdown\ConfigurationAwareInterface; |
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use League\HTMLToMarkdown\ElementInterface; |
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class LinkConverter implements ConverterInterface, ConfigurationAwareInterface |
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{ |
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/** |
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* @var Configuration |
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*/ |
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protected $config; |
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/** |
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* @param Configuration $config |
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*/ |
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public function setConfig(Configuration $config) { |
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$this->config = $config; |
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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 $element) |
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{ |
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$href = $element->getAttribute('href'); |
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$title = $element->getAttribute('title'); |
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$text = trim($element->getValue(), "\t\n\r\0\x0B"); |
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if ($title !== '') { |
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$markdown = '[' . $text . '](' . $href . ' "' . $title . '")'; |
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} elseif ($href === $text && $this->isValidAutolink($href)) { |
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$markdown = '<' . $href . '>'; |
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} elseif ($href === 'mailto:' . $text && $this->isValidEmail($text)) { |
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$markdown = '<' . $text . '>'; |
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} else { |
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if (stristr($href, ' ')) { |
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$href = '<'.$href.'>'; |
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} |
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$markdown = '[' . $text . '](' . $href . ')'; |
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} |
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if (!$href) { |
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$markdown = html_entity_decode($element->getChildrenAsString()); |
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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('a'); |
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} |
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/** |
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* @param string $href |
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* |
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* @return bool |
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*/ |
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private function isValidAutolink($href) |
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{ |
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$useAutolinks = $this->config->getOption('use_autolinks'); |
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return $useAutolinks && (preg_match('/^[A-Za-z][A-Za-z0-9.+-]{1,31}:[^<>\x00-\x20]*/i', $href) === 1); |
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} |
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/** |
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* @param string $email |
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* |
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* @return bool |
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*/ |
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private function isValidEmail($email) |
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{ |
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// Email validation is messy business, but this should cover most cases |
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return filter_var($email, FILTER_VALIDATE_EMAIL); |
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} |
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} |
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thephpleague /
html-to-markdown
