mirror of https://github.com/friendica/friendica
53 lines
1.2 KiB
PHP
53 lines
1.2 KiB
PHP
<?php
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namespace League\HTMLToMarkdown\Converter;
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use League\HTMLToMarkdown\ElementInterface;
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class LinkConverter 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 $element)
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{
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$href = $element->getAttribute('href');
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$title = $element->getAttribute('title');
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$text = trim($element->getValue());
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if ($title !== '') {
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$markdown = '[' . $text . '](' . $href . ' "' . $title . '")';
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} elseif ($href === $text && $this->isValidAutolink($href)) {
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$markdown = '<' . $href . '>';
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} else {
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$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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return 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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