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Update the OPDS feed to be a correct 'complete acquisition feed'

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This commit is contained in:
Alex Cabal 2020-06-01 21:12:30 -05:00
parent 6b2a9ed655
commit b160fc0e1d
1 changed files with 30 additions and 7 deletions
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37
scripts/generate-opds.php
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@ -7,28 +7,50 @@ $webUrl = $options["weburl"] ?? "https://standardebooks.org";
$updatedTimestamp = gmdate('Y-m-d\TH:i:s\Z');
$contentFiles = explode("\n", trim(shell_exec('find ' . escapeshellarg($webRoot . '/www/ebooks/') . ' -name "content.opf" | sort') ?? ''));
$sortedContentFiles = [];
foreach($contentFiles as $path){
if($path == '')
continue;
$xml = new SimpleXMLElement(str_replace('xmlns=', 'ns=', file_get_contents($path) ?: ''));
$xml->registerXPathNamespace('dc', 'http://purl.org/dc/elements/1.1/');
$updated = $xml->xpath('/package/metadata/meta[@property="dcterms:modified"]') ?: [];
if($updated !== false && sizeof($updated) > 0){
$sortedContentFiles[(string)$updated[0]] = $xml;
}
}
krsort($sortedContentFiles);
ob_start();
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
/* Notes:
- *All* OPDS feeds must contain a rel="crawlable" link pointing to the /opds/all feed
- The <fh:complete/> element is required to note this as a "Complete Acquisition Feeds"; see https://specs.opds.io/opds-1.2#25-complete-acquisition-feeds
*/
?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:schema="http://schema.org/">
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:schema="http://schema.org/" xmlns:fh="http://purl.org/syndication/history/1.0">
<id><?= $webUrl ?>/opds/all</id>
<link href="<?= $webUrl ?>/opds/all" rel="self" type="application/atom+xml;profile=opds-catalog;kind=acquisition"/>
<link href="<?= $webUrl ?>/opds" rel="start" type="application/atom+xml;profile=opds-catalog;kind=navigation"/>
<link href="<?= $webUrl ?>/opds/all" rel="crawlable" type="application/atom+xml;profile=opds-catalog;kind=acquisition"/>
<title>All Standard Ebooks</title>
<subtitle>Free and liberated ebooks, carefully produced for the true book lover.</subtitle>
<icon><?= $webUrl ?>/images/logo.png</icon>
<updated><?= $updatedTimestamp ?></updated>
<fh:complete/>
<author>
<name>Standard Ebooks</name>
<uri><?= $webUrl ?></uri>
</author>
<? foreach($contentFiles as $path){
if($path == '')
continue;
$xml = new SimpleXMLElement(str_replace('xmlns=', 'ns=', file_get_contents("$path") ?: ''));
$xml->registerXPathNamespace('dc', 'http://purl.org/dc/elements/1.1/');
<? foreach($sortedContentFiles as $xml){
$authors = array();
$temp = $xml->xpath('/package/metadata/dc:identifier') ?: [];
@ -90,6 +112,7 @@ print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
</author>
<? } ?>
<published><?= $published ?></published>
<dc:issued><?= $published ?></dc:issued>
<updated><?= $modified ?></updated>
<dc:language><?= $language ?></dc:language>
<dc:publisher>Standard Ebooks</dc:publisher>