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Added deeper content id de-duplication

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Closes #1393
This commit is contained in:
Dan Brown 2019-04-21 12:22:41 +01:00
parent 4d6df37963
commit 2bb06463d5
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GPG Key ID: 46D9F943C24A2EF9
2 changed files with 47 additions and 32 deletions
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77
app/Entities/Repos/PageRepo.php
View File

@ -7,6 +7,7 @@ use BookStack\Entities\Page;
use BookStack\Entities\PageRevision;
use Carbon\Carbon;
use DOMDocument;
use DOMElement;
use DOMXPath;
class PageRepo extends EntityRepo
@ -129,8 +130,7 @@ class PageRepo extends EntityRepo
}
/**
* Formats a page's html to be tagged correctly
* within the system.
* Formats a page's html to be tagged correctly within the system.
* @param string $htmlText
* @return string
*/
@ -148,37 +148,17 @@ class PageRepo extends EntityRepo
$body = $container->childNodes->item(0);
$childNodes = $body->childNodes;
// Ensure no duplicate ids are used
$idArray = [];
// Set ids on top-level nodes
$idMap = [];
foreach ($childNodes as $index => $childNode) {
/** @var \DOMElement $childNode */
if (get_class($childNode) !== 'DOMElement') {
continue;
}
$this->setUniqueId($childNode, $idMap);
}
// Overwrite id if not a BookStack custom id
if ($childNode->hasAttribute('id')) {
$id = $childNode->getAttribute('id');
if (strpos($id, 'bkmrk') === 0 && array_search($id, $idArray) === false) {
$idArray[] = $id;
continue;
};
}
// Create an unique id for the element
// Uses the content as a basis to ensure output is the same every time
// the same content is passed through.
$contentId = 'bkmrk-' . substr(strtolower(preg_replace('/\s+/', '-', trim($childNode->nodeValue))), 0, 20);
$newId = urlencode($contentId);
$loopIndex = 0;
while (in_array($newId, $idArray)) {
$newId = urlencode($contentId . '-' . $loopIndex);
$loopIndex++;
}
$childNode->setAttribute('id', $newId);
$idArray[] = $newId;
// Ensure no duplicate ids within child items
$xPath = new DOMXPath($doc);
$idElems = $xPath->query('//body//*//*[@id]');
foreach ($idElems as $domElem) {
$this->setUniqueId($domElem, $idMap);
}
// Generate inner html as a string
@ -190,6 +170,41 @@ class PageRepo extends EntityRepo
return $html;
}
/**
* Set a unique id on the given DOMElement.
* A map for existing ID's should be passed in to check for current existence.
* @param DOMElement $element
* @param array $idMap
*/
protected function setUniqueId($element, array &$idMap)
{
if (get_class($element) !== 'DOMElement') {
return;
}
// Overwrite id if not a BookStack custom id
$existingId = $element->getAttribute('id');
if (strpos($existingId, 'bkmrk') === 0 && !isset($idMap[$existingId])) {
$idMap[$existingId] = true;
return;
}
// Create an unique id for the element
// Uses the content as a basis to ensure output is the same every time
// the same content is passed through.
$contentId = 'bkmrk-' . substr(strtolower(preg_replace('/\s+/', '-', trim($element->nodeValue))), 0, 20);
$newId = urlencode($contentId);
$loopIndex = 0;
while (isset($idMap[$newId])) {
$newId = urlencode($contentId . '-' . $loopIndex);
$loopIndex++;
}
$element->setAttribute('id', $newId);
$idMap[$newId] = true;
}
/**
* Get the plain text version of a page's content.
* @param \BookStack\Entities\Page $page

2
tests/Entity/PageContentTest.php
View File

@ -120,7 +120,7 @@ class PageContentTest extends TestCase
$this->asEditor();
$page = Page::first();
$content = '<p id="bkmrk-test">test a</p>'."\n".'<p id="bkmrk-test">test b</p>';
$content = '<ul id="bkmrk-test"><li>test a</li><li><ul id="bkmrk-test"><li>test b</li></ul></li></ul>';
$pageSave = $this->put($page->getUrl(), [
'name' => $page->name,
'html' => $content,