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feat: preserve and reproduce podcast feeds (itunes rss module) (#3759)

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Dag 2023-10-16 02:58:03 +02:00 • committed by GitHub
parent 408c2e5e91
commit ef5bd83bd0
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7 changed files with 126 additions and 85 deletions
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110
lib/FeedParser.php
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@ -3,11 +3,13 @@
declare(strict_types=1);
/**
* Very basic and naive feed parser that srapes out rss 0.91, 1.0, 2.0 and atom 1.0.
* Very basic and naive feed parser.
*
* Emit arrays meant to be used inside rss-bridge.
* Scrapes out rss 0.91, 1.0, 2.0 and atom 1.0.
*
* The feed item structure is identical to that of FeedItem
* Produce arrays meant to be used inside rss-bridge.
*
* The item structure is tweaked so that works with FeedItem
*/
final class FeedParser
{
@ -85,9 +87,7 @@ final class FeedParser
public function parseAtomItem(\SimpleXMLElement $feedItem): array
{
// Some ATOM entries also contain RSS 2.0 fields
$item = $this->parseRss2Item($feedItem);
if (isset($feedItem->id)) {
$item['uri'] = (string)$feedItem->id;
}
@ -131,8 +131,35 @@ final class FeedParser
public function parseRss2Item(\SimpleXMLElement $feedItem): array
{
// Primary data is compatible to 0.91 with some additional data
$item = $this->parseRss091Item($feedItem);
$item = [
'uri' => '',
'title' => '',
'content' => '',
'timestamp' => '',
'author' => '',
//'uid' => null,
//'categories' => [],
//'enclosures' => [],
];
foreach ($feedItem as $k => $v) {
$hasChildren = count($v) !== 0;
if (!$hasChildren) {
$item[$k] = (string) $v;
}
}
if (isset($feedItem->link)) {
// todo: trim uri
$item['uri'] = (string)$feedItem->link;
}
if (isset($feedItem->title)) {
$item['title'] = html_entity_decode((string)$feedItem->title);
}
if (isset($feedItem->description)) {
$item['content'] = (string)$feedItem->description;
}
$namespaces = $feedItem->getNamespaces(true);
if (isset($namespaces['dc'])) {
$dc = $feedItem->children($namespaces['dc']);
@ -140,7 +167,24 @@ final class FeedParser
if (isset($namespaces['media'])) {
$media = $feedItem->children($namespaces['media']);
}
foreach ($namespaces as $namespaceName => $namespaceUrl) {
if (in_array($namespaceName, ['', 'content', 'media'])) {
continue;
}
$module = $feedItem->children($namespaceUrl);
$item[$namespaceName] = [];
foreach ($module as $moduleKey => $moduleValue) {
$item[$namespaceName][$moduleKey] = (string) $moduleValue;
}
}
if (isset($namespaces['itunes'])) {
$enclosure = $feedItem->enclosure;
$item['enclosure'] = [
'url' => (string) $enclosure['url'],
'length' => (string) $enclosure['length'],
'type' => (string) $enclosure['type'],
];
}
if (isset($feedItem->guid)) {
// Pluck out a url from guid
foreach ($feedItem->guid->attributes() as $attribute => $value) {
@ -185,8 +229,26 @@ final class FeedParser
public function parseRss1Item(\SimpleXMLElement $feedItem): array
{
// 1.0 adds optional elements around the 0.91 standard
$item = $this->parseRss091Item($feedItem);
$item = [
'uri' => '',
'title' => '',
'content' => '',
'timestamp' => '',
'author' => '',
//'uid' => null,
//'categories' => [],
//'enclosures' => [],
];
if (isset($feedItem->link)) {
// todo: trim uri
$item['uri'] = (string)$feedItem->link;
}
if (isset($feedItem->title)) {
$item['title'] = html_entity_decode((string)$feedItem->title);
}
if (isset($feedItem->description)) {
$item['content'] = (string)$feedItem->description;
}
$namespaces = $feedItem->getNamespaces(true);
if (isset($namespaces['dc'])) {
$dc = $feedItem->children($namespaces['dc']);
@ -199,32 +261,4 @@ final class FeedParser
}
return $item;
}
public function parseRss091Item(\SimpleXMLElement $feedItem): array
{
$item = [
'uri' => null,
'title' => null,
'content' => null,
'timestamp' => null,
'author' => null,
//'uid' => null,
//'categories' => [],
//'enclosures' => [],
];
if (isset($feedItem->link)) {
// todo: trim uri
$item['uri'] = (string)$feedItem->link;
}
if (isset($feedItem->title)) {
$item['title'] = html_entity_decode((string)$feedItem->title);
}
// rss 0.91 doesn't support timestamps
// rss 0.91 doesn't support authors
// rss 0.91 doesn't support enclosures
if (isset($feedItem->description)) {
$item['content'] = (string)$feedItem->description;
}
return $item;
}
}