84 lines
No EOL
3.1 KiB
PHP
84 lines
No EOL
3.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace JKingWeb\Arsse;
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use PicoFeed\Reader\Reader;
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use PicoFeed\PicoFeedException;
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use PicoFeed\Reader\Favicon;
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use PicoFeed\Config\Config;
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class Feed {
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public $data = null;
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public $favicon;
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public $parser;
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public $reader;
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public $resource;
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public function __construct(string $url, string $lastModified = '', string $etag = '', string $username = '', string $password = '') {
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try {
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$config = new Config;
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$config->setClientUserAgent(Data::$conf->userAgentString);
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$config->setGrabberUserAgent(Data::$conf->userAgentString);
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$this->reader = new Reader($config);
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$this->resource = $this->reader->download($url, $lastModified, $etag, $username, $password);
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// Grab the favicon for the feed; returns an empty string if it cannot find one.
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$this->favicon = (new Favicon)->find($url);
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} catch (PicoFeedException $e) {
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throw new Feed\Exception($url, $e);
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}
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}
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public function parse(): bool {
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try {
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$this->parser = $this->reader->getParser(
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$this->resource->getUrl(),
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$this->resource->getContent(),
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$this->resource->getEncoding()
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);
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$feed = $this->parser->execute();
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} catch (PicoFeedException $e) {
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throw new Feed\Exception($url, $e);
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}
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// PicoFeed does not provide valid ids when there is no id element. Its solution
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// of hashing the url, title, and content together for the id if there is no id
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// element is stupid. Many feeds are frankenstein mixtures of Atom and RSS, but
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// some are pure RSS with guid elements while others use the Dublin Core spec for
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// identification. These feeds shouldn't be duplicated when updated. That should
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// only be reserved for severely broken feeds.
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foreach ($feed->items as &$f) {
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// Hashes used for comparison to check for updates and also to identify when an
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// id doesn't exist.
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$f->urlTitleHash = hash('sha256', $f->url.$f->title);
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$f->urlContentHash = hash('sha256', $f->url.$f->content.$f->enclosureUrl.$f->enclosureType);
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$f->titleContentHash = hash('sha256', $f->title.$f->content.$f->enclosureUrl.$f->enclosureType);
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// If there is an id element then continue. The id is used already.
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$id = (string)$f->xml->id;
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if ($id !== '') {
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continue;
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}
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// If there is a guid element use it as the id.
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$id = (string)$f->xml->guid;
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if ($id !== '') {
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$f->id = hash('sha256', $id);
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continue;
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}
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// If there is a Dublin Core identifier use it.
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$id = (string)$f->xml->children('http://purl.org/dc/elements/1.1/')->identifier;
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if ($id !== '') {
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$f->id = hash('sha256', $id);
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continue;
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}
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// If there aren't any of those there is no id.
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$f->id = '';
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}
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$this->data = $feed;
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return true;
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}
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} |