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[XML formats] Ensure elements are connected to DOM before further manipulation (#2806)

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We are setting xmlns attributes at the root element but PHP would
still attach redundant ones to the DOM elements created with `createElementNS`.
That was because PHP reconciles namespace attributes when appending elements to DOM
but since we previously only attached the elements after all children were attached,
the reconciliation algorithm was not able to see the root element’s attributes.

To fix this, let’s attach each element to its parent immediately after it is created.
This commit is contained in:
Jan Tojnar 2022-06-09 18:33:23 +02:00 • committed by GitHub
parent 37f211a37e
commit 1af6cbeb1e
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2 changed files with 41 additions and 43 deletions
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35
formats/MrssFormat.php
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@ -48,26 +48,26 @@ class MrssFormat extends FormatAbstract {
$document = new DomDocument('1.0', $this->getCharset());
$document->formatOutput = true;
$feed = $document->createElement('rss');
$document->appendChild($feed);
$feed->setAttribute('version', '2.0');
$feed->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:atom', self::ATOM_NS);
$feed->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:media', self::MRSS_NS);
$document->appendChild($feed);
$channel = $document->createElement('channel');
$feed->appendChild($channel);
$title = $extraInfos['name'];
$channelTitle = $document->createElement('title');
$channelTitle->appendChild($document->createTextNode($title));
$channel->appendChild($channelTitle);
$channelTitle->appendChild($document->createTextNode($title));
$link = $document->createElement('link');
$link->appendChild($document->createTextNode($uri));
$channel->appendChild($link);
$link->appendChild($document->createTextNode($uri));
$description = $document->createElement('description');
$description->appendChild($document->createTextNode($extraInfos['name']));
$channel->appendChild($description);
$description->appendChild($document->createTextNode($extraInfos['name']));
$icon = $extraInfos['icon'];
if (!empty($icon) && in_array(substr($icon, -4), self::ALLOWED_IMAGE_EXT)) {
@ -84,17 +84,17 @@ class MrssFormat extends FormatAbstract {
$feedImage->appendChild($iconLink);
}
$linkAlternate = $document->createElementNS(self::ATOM_NS, 'atom:link');
$linkAlternate = $document->createElementNS(self::ATOM_NS, 'link');
$channel->appendChild($linkAlternate);
$linkAlternate->setAttribute('rel', 'alternate');
$linkAlternate->setAttribute('type', 'text/html');
$linkAlternate->setAttribute('href', $uri);
$channel->appendChild($linkAlternate);
$linkSelf = $document->createElementNS(self::ATOM_NS, 'atom:link');
$linkSelf = $document->createElementNS(self::ATOM_NS, 'link');
$channel->appendChild($linkSelf);
$linkSelf->setAttribute('rel', 'self');
$linkSelf->setAttribute('type', 'application/atom+xml');
$linkSelf->setAttribute('href', $feedUrl);
$channel->appendChild($linkSelf);
foreach($this->getItems() as $item) {
$itemTimestamp = $item->getTimestamp();
@ -113,51 +113,50 @@ class MrssFormat extends FormatAbstract {
$entryID = hash('sha1', $itemTitle . $itemContent);
$entry = $document->createElement('item');
$channel->appendChild($entry);
if (!empty($itemTitle)) {
$entryTitle = $document->createElement('title');
$entryTitle->appendChild($document->createTextNode($itemTitle));
$entry->appendChild($entryTitle);
$entryTitle->appendChild($document->createTextNode($itemTitle));
}
if (!empty($itemUri)) {
$entryLink = $document->createElement('link');
$entryLink->appendChild($document->createTextNode($itemUri));
$entry->appendChild($entryLink);
$entryLink->appendChild($document->createTextNode($itemUri));
}
$entryGuid = $document->createElement('guid');
$entryGuid->setAttribute('isPermaLink', $isPermaLink);
$entryGuid->appendChild($document->createTextNode($entryID));
$entry->appendChild($entryGuid);
$entryGuid->appendChild($document->createTextNode($entryID));
if (!empty($itemTimestamp)) {
$entryPublished = $document->createElement('pubDate');
$entryPublished->appendChild($document->createTextNode(gmdate(DATE_RFC2822, $itemTimestamp)));
$entry->appendChild($entryPublished);
$entryPublished->appendChild($document->createTextNode(gmdate(DATE_RFC2822, $itemTimestamp)));
}
if (!empty($itemContent)) {
$entryDescription = $document->createElement('description');
$entryDescription->appendChild($document->createTextNode($itemContent));
$entry->appendChild($entryDescription);
$entryDescription->appendChild($document->createTextNode($itemContent));
}
foreach($item->getEnclosures() as $enclosure) {
$entryEnclosure = $document->createElementNS(self::MRSS_NS, 'media:content');
$entryEnclosure = $document->createElementNS(self::MRSS_NS, 'content');
$entry->appendChild($entryEnclosure);
$entryEnclosure->setAttribute('url', $enclosure);
$entryEnclosure->setAttribute('type', getMimeType($enclosure));
$entry->appendChild($entryEnclosure);
}
$entryCategories = '';
foreach($item->getCategories() as $category) {
$entryCategory = $document->createElement('category');
$entryCategory->appendChild($document->createTextNode($category));
$entry->appendChild($entryCategory);
$entryCategory->appendChild($document->createTextNode($category));
}
$channel->appendChild($entry);
}
$toReturn = $document->saveXML();