standardebooks/web
1
0
Fork 0
mirror of https://github.com/standardebooks/web.git synced 2025-07-15 02:46:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Flesh out OPDS generation backend to be more robust and to support generic Atom feeds

Browse source
This commit is contained in:
Alex Cabal 2022-06-20 21:55:34 -05:00
parent 35188195f1
commit f6df03cfca
23 changed files with 1549 additions and 267 deletions
Download patch file Download diff file Expand all files Collapse all files

45
lib/OpdsNavigationFeed.php
View file

@ -1,23 +1,46 @@
<?
use Safe\DateTime;
use function Safe\file_get_contents;
use function Safe\file_put_contents;
use function Safe\gmdate;
use function Safe\rename;
use function Safe\tempnam;
class OpdsNavigationFeed extends OpdsFeed{
public $Entries = [];
public function __construct(string $url, string $title, string $path, array $entries, ?OpdsNavigationFeed $parent){
parent::__construct($url, $title, $path, $entries, $parent);
public function __construct(string $url, string $title, ?string $parentUrl, array $entries){
parent::__construct($url, $title, $parentUrl);
$this->Entries = $entries;
// If the file already exists, try to fill in the existing updated timestamps from the file.
// That way, if the file has changed, we only update the changed entry,
// and not every single entry. This is only relevant to navigation feeds,
// because their *entries* along with their root updated timestamp change if their entries have an update.
// For acquisition feeds, only the root updated timestamp changes, so this is not a concern.
if(file_exists($this->Path)){
try{
$xml = new SimpleXMLElement(str_replace('xmlns=', 'ns=', file_get_contents($this->Path)));
foreach($xml->xpath('//entry') ?: [] as $existingEntry){
foreach($this->Entries as $entry){
if($entry->Id == $existingEntry->id){
$entry->Updated = new DateTime($existingEntry->updated);
}
}
}
}
catch(Exception $ex){
// XML parsing failure
}
}
}
public function Save(string $path): void{
$updatedTimestamp = gmdate('Y-m-d\TH:i:s\Z');
protected function GetXmlString(): string{
if($this->XmlString === null){
$this->XmlString = $this->CleanXmlString(Template::OpdsNavigationFeed(['id' => $this->Id, 'url' => $this->Url, 'title' => $this->Title, 'parentUrl' => $this->Parent ? $this->Parent->Url : null, 'updatedTimestamp' => $this->Updated, 'entries' => $this->Entries]));
}
$feed = Template::OpdsNavigationFeed(['id' => $this->Id, 'url' => $this->Url, 'title' => $this->Title, 'parentUrl' => $this->ParentUrl, 'updatedTimestamp' => $updatedTimestamp, 'entries' => $this->Entries]);
return $this->XmlString;
}
$this->SaveIfChanged($path, $feed, $updatedTimestamp);
public function Save(): void{
$this->Updated = new DateTime();
$this->SaveIfChanged();
}
}