152 regels
4.5 KiB
PHP
152 regels
4.5 KiB
PHP
<?php namespace Todaymade\Daux\ContentTypes\Markdown;
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use League\CommonMark\ElementRendererInterface;
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use League\CommonMark\HtmlElement;
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use League\CommonMark\Inline\Element\AbstractInline;
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use League\CommonMark\Inline\Element\Link;
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use Todaymade\Daux\Config;
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use Todaymade\Daux\DauxHelper;
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use Todaymade\Daux\Exception\LinkNotFoundException;
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use Todaymade\Daux\Tree\Entry;
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class LinkRenderer extends \League\CommonMark\Inline\Renderer\LinkRenderer
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{
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/**
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* @var Config
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*/
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protected $daux;
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public function __construct($daux)
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{
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$this->daux = $daux;
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}
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/**
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* @param string $url
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* @return Entry
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* @throws LinkNotFoundException
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*/
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protected function resolveInternalFile($url)
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{
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$triedAbsolute = false;
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// Legacy absolute paths could start with
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// "!" In this case we will try to find
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// the file starting at the root
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if ($url[0] == '!' || $url[0] == '/') {
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$url = ltrim($url, '!/');
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if ($file = DauxHelper::getFile($this->daux['tree'], $url)) {
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return $file;
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}
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$triedAbsolute = true;
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}
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// Seems it's not an absolute path or not found,
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// so we'll continue with the current folder
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if ($file = DauxHelper::getFile($this->daux->getCurrentPage()->getParent(), $url)) {
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return $file;
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}
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// If we didn't already try it, we'll
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// do a pass starting at the root
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if (!$triedAbsolute && $file = DauxHelper::getFile($this->daux['tree'], $url)) {
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return $file;
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}
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throw new LinkNotFoundException("Could not locate file '$url'");
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}
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protected function isValidUrl($url)
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{
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return !empty($url) && $url[0] != '#';
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}
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protected function isExternalUrl($url)
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{
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return preg_match('#^(?:[a-z]+:)?//|^mailto:#', $url);
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}
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/**
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* @param AbstractInline|Link $inline
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* @param ElementRendererInterface $htmlRenderer
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* @return HtmlElement
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* @throws LinkNotFoundException
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*/
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public function render(AbstractInline $inline, ElementRendererInterface $htmlRenderer)
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{
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// This can't be in the method type as
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// the method is an abstract and should
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// have the same interface
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if (!$inline instanceof Link) {
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throw new \RuntimeException(
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'Wrong type passed to ' . __CLASS__ . '::' . __METHOD__ .
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" the expected type was 'League\\CommonMark\\Inline\\Element\\Link' but '" .
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get_class($inline) . "' was provided"
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);
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}
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$element = parent::render($inline, $htmlRenderer);
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$url = $inline->getUrl();
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// empty urls and anchors should
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// not go through the url resolver
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if (!$this->isValidUrl($url)) {
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return $element;
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}
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// Absolute urls, shouldn't either
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if ($this->isExternalUrl($url)) {
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$element->setAttribute('class', 'Link--external');
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return $element;
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}
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// if there's a hash component in the url, ensure we
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// don't put that part through the resolver.
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$urlAndHash = explode('#', $url);
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$url = $urlAndHash[0];
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$foundWithHash = false;
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try {
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$file = $this->resolveInternalFile($url);
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$url = DauxHelper::getRelativePath($this->daux->getCurrentPage()->getUrl(), $file->getUrl());
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} catch (LinkNotFoundException $e) {
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// For some reason, the filename could contain a # and thus the link needs to resolve to that.
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try {
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if (strlen($urlAndHash[1] ?? "") > 0) {
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$file = $this->resolveInternalFile($url . '#' . $urlAndHash[1]);
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$url = DauxHelper::getRelativePath($this->daux->getCurrentPage()->getUrl(), $file->getUrl());
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$foundWithHash = true;
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}
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} catch (LinkNotFoundException $e2) {
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// If it's still not found here, we'll only
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// report on the first error as the second
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// one will tell the same.
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}
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if (!$foundWithHash) {
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if ($this->daux->isStatic()) {
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throw $e;
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}
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$element->setAttribute('class', 'Link--broken');
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}
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}
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if (!$foundWithHash && isset($urlAndHash[1])) {
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$url .= '#' . $urlAndHash[1];
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}
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$element->setAttribute('href', $url);
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return $element;
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}
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}
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