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diff --git a/vendor/miniflux/picofeed/lib/PicoFeed/Parser/Parser.php b/vendor/miniflux/picofeed/lib/PicoFeed/Parser/Parser.php
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+<?php
+
+namespace PicoFeed\Parser;
+
+use PicoFeed\Processor\ContentFilterProcessor;
+use PicoFeed\Processor\ContentGeneratorProcessor;
+use PicoFeed\Processor\ItemPostProcessor;
+use PicoFeed\Processor\ScraperProcessor;
+use SimpleXMLElement;
+use PicoFeed\Client\Url;
+use PicoFeed\Encoding\Encoding;
+use PicoFeed\Filter\Filter;
+use PicoFeed\Logging\Logger;
+
+/**
+ * Base parser class.
+ *
+ * @package PicoFeed\Parser
+ * @author Frederic Guillot
+ */
+abstract class Parser implements ParserInterface
+{
+ /**
+ * Config object.
+ *
+ * @var \PicoFeed\Config\Config
+ */
+ private $config;
+
+ /**
+ * DateParser object.
+ *
+ * @var \PicoFeed\Parser\DateParser
+ */
+ private $dateParser;
+
+ /**
+ * Hash algorithm used to generate item id, any value supported by PHP, see hash_algos().
+ *
+ * @var string
+ */
+ private $hash_algo = 'sha256';
+
+ /**
+ * Feed content (XML data).
+ *
+ * @var string
+ */
+ protected $content = '';
+
+ /**
+ * Fallback url.
+ *
+ * @var string
+ */
+ protected $fallback_url = '';
+
+ /**
+ * XML namespaces supported by parser.
+ *
+ * @var array
+ */
+ protected $namespaces = array();
+
+ /**
+ * XML namespaces used in document.
+ *
+ * @var array
+ */
+ protected $used_namespaces = array();
+
+ /**
+ * Item Post Processor instance
+ *
+ * @access private
+ * @var ItemPostProcessor
+ */
+ private $itemPostProcessor;
+
+ /**
+ * Constructor.
+ *
+ * @param string $content Feed content
+ * @param string $http_encoding HTTP encoding (headers)
+ * @param string $fallback_url Fallback url when the feed provide relative or broken url
+ */
+ public function __construct($content, $http_encoding = '', $fallback_url = '')
+ {
+ $this->fallback_url = $fallback_url;
+ $xml_encoding = XmlParser::getEncodingFromXmlTag($content);
+
+ // Strip XML tag to avoid multiple encoding/decoding in the next XML processing
+ $this->content = Filter::stripXmlTag($content);
+
+ // Encode everything in UTF-8
+ Logger::setMessage(get_called_class().': HTTP Encoding "'.$http_encoding.'" ; XML Encoding "'.$xml_encoding.'"');
+ $this->content = Encoding::convert($this->content, $xml_encoding ?: $http_encoding);
+
+ $this->itemPostProcessor = new ItemPostProcessor($this->config);
+ $this->itemPostProcessor->register(new ContentGeneratorProcessor($this->config));
+ $this->itemPostProcessor->register(new ContentFilterProcessor($this->config));
+ }
+
+ /**
+ * Parse the document.
+ *
+ * @return \PicoFeed\Parser\Feed
+ */
+ public function execute()
+ {
+ Logger::setMessage(get_called_class().': begin parsing');
+
+ $xml = XmlParser::getSimpleXml($this->content);
+
+ if ($xml === false) {
+ Logger::setMessage(get_called_class().': Applying XML workarounds');
+ $this->content = Filter::normalizeData($this->content);
+ $xml = XmlParser::getSimpleXml($this->content);
+
+ if ($xml === false) {
+ Logger::setMessage(get_called_class().': XML parsing error');
+ Logger::setMessage(XmlParser::getErrors());
+ throw new MalformedXmlException('XML parsing error');
+ }
+ }
+
+ $this->used_namespaces = $xml->getNamespaces(true);
+ $xml = $this->registerSupportedNamespaces($xml);
+
+ $feed = new Feed();
+
+ $this->findFeedUrl($xml, $feed);
+ $this->checkFeedUrl($feed);
+
+ $this->findSiteUrl($xml, $feed);
+ $this->checkSiteUrl($feed);
+
+ $this->findFeedTitle($xml, $feed);
+ $this->findFeedDescription($xml, $feed);
+ $this->findFeedLanguage($xml, $feed);
+ $this->findFeedId($xml, $feed);
+ $this->findFeedDate($xml, $feed);
+ $this->findFeedLogo($xml, $feed);
+ $this->findFeedIcon($xml, $feed);
+
+ foreach ($this->getItemsTree($xml) as $entry) {
+ $entry = $this->registerSupportedNamespaces($entry);
+
+ $item = new Item();
+ $item->xml = $entry;
+ $item->namespaces = $this->used_namespaces;
+
+ $this->findItemAuthor($xml, $entry, $item);
+
+ $this->findItemUrl($entry, $item);
+ $this->checkItemUrl($feed, $item);
+
+ $this->findItemTitle($entry, $item);
+ $this->findItemContent($entry, $item);
+
+ // Id generation can use the item url/title/content (order is important)
+ $this->findItemId($entry, $item, $feed);
+ $this->findItemDate($entry, $item, $feed);
+ $this->findItemEnclosure($entry, $item, $feed);
+ $this->findItemLanguage($entry, $item, $feed);
+ $this->findItemCategories($entry, $item, $feed);
+
+ $this->itemPostProcessor->execute($feed, $item);
+ $feed->items[] = $item;
+ }
+
+ Logger::setMessage(get_called_class().PHP_EOL.$feed);
+
+ return $feed;
+ }
+
+ /**
+ * Check if the feed url is correct.
+ *
+ * @param Feed $feed Feed object
+ */
+ public function checkFeedUrl(Feed $feed)
+ {
+ if ($feed->getFeedUrl() === '') {
+ $feed->feedUrl = $this->fallback_url;
+ } else {
+ $feed->feedUrl = Url::resolve($feed->getFeedUrl(), $this->fallback_url);
+ }
+ }
+
+ /**
+ * Check if the site url is correct.
+ *
+ * @param Feed $feed Feed object
+ */
+ public function checkSiteUrl(Feed $feed)
+ {
+ if ($feed->getSiteUrl() === '') {
+ $feed->siteUrl = Url::base($feed->getFeedUrl());
+ } else {
+ $feed->siteUrl = Url::resolve($feed->getSiteUrl(), $this->fallback_url);
+ }
+ }
+
+ /**
+ * Check if the item url is correct.
+ *
+ * @param Feed $feed Feed object
+ * @param Item $item Item object
+ */
+ public function checkItemUrl(Feed $feed, Item $item)
+ {
+ $item->url = Url::resolve($item->getUrl(), $feed->getSiteUrl());
+ }
+
+ /**
+ * Find the item date.
+ *
+ * @param SimpleXMLElement $entry Feed item
+ * @param Item $item Item object
+ * @param \PicoFeed\Parser\Feed $feed Feed object
+ */
+ public function findItemDate(SimpleXMLElement $entry, Item $item, Feed $feed)
+ {
+ $this->findItemPublishedDate($entry, $item, $feed);
+ $this->findItemUpdatedDate($entry, $item, $feed);
+
+ if ($item->getPublishedDate() === null) {
+ // Use the updated date if available, otherwise use the feed date
+ $item->setPublishedDate($item->getUpdatedDate() ?: $feed->getDate());
+ }
+
+ if ($item->getUpdatedDate() === null) {
+ // Use the published date as fallback
+ $item->setUpdatedDate($item->getPublishedDate());
+ }
+
+ // Use the most recent of published and updated dates
+ $item->setDate(max($item->getPublishedDate(), $item->getUpdatedDate()));
+ }
+
+ /**
+ * Get Item Post Processor instance
+ *
+ * @access public
+ * @return ItemPostProcessor
+ */
+ public function getItemPostProcessor()
+ {
+ return $this->itemPostProcessor;
+ }
+
+ /**
+ * Get DateParser instance
+ *
+ * @access public
+ * @return DateParser
+ */
+ public function getDateParser()
+ {
+ if ($this->dateParser === null) {
+ $this->dateParser = new DateParser($this->config);
+ }
+
+ return $this->dateParser;
+ }
+
+ /**
+ * Generate a unique id for an entry (hash all arguments).
+ *
+ * @return string
+ */
+ public function generateId()
+ {
+ return hash($this->hash_algo, implode(func_get_args()));
+ }
+
+ /**
+ * Return true if the given language is "Right to Left".
+ *
+ * @static
+ *
+ * @param string $language Language: fr-FR, en-US
+ *
+ * @return bool
+ */
+ public static function isLanguageRTL($language)
+ {
+ $language = strtolower($language);
+
+ $rtl_languages = array(
+ 'ar', // Arabic (ar-**)
+ 'fa', // Farsi (fa-**)
+ 'ur', // Urdu (ur-**)
+ 'ps', // Pashtu (ps-**)
+ 'syr', // Syriac (syr-**)
+ 'dv', // Divehi (dv-**)
+ 'he', // Hebrew (he-**)
+ 'yi', // Yiddish (yi-**)
+ );
+
+ foreach ($rtl_languages as $prefix) {
+ if (strpos($language, $prefix) === 0) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Set Hash algorithm used for id generation.
+ *
+ * @param string $algo Algorithm name
+ * @return \PicoFeed\Parser\Parser
+ */
+ public function setHashAlgo($algo)
+ {
+ $this->hash_algo = $algo ?: $this->hash_algo;
+ return $this;
+ }
+
+ /**
+ * Set config object.
+ *
+ * @param \PicoFeed\Config\Config $config Config instance
+ *
+ * @return \PicoFeed\Parser\Parser
+ */
+ public function setConfig($config)
+ {
+ $this->config = $config;
+ $this->itemPostProcessor->setConfig($config);
+ return $this;
+ }
+
+ /**
+ * Enable the content grabber.
+ *
+ * @return \PicoFeed\Parser\Parser
+ */
+ public function disableContentFiltering()
+ {
+ $this->itemPostProcessor->unregister('PicoFeed\Processor\ContentFilterProcessor');
+ return $this;
+ }
+
+ /**
+ * Enable the content grabber.
+ *
+ * @param bool $needsRuleFile true if only pages with rule files should be
+ * scraped
+ * @param null|\Closure $scraperCallback Callback function that gets called for each
+ * scraper execution
+ *
+ * @return \PicoFeed\Parser\Parser
+ */
+ public function enableContentGrabber($needsRuleFile = false, $scraperCallback = null)
+ {
+ $processor = new ScraperProcessor($this->config);
+
+ if ($needsRuleFile) {
+ $processor->getScraper()->disableCandidateParser();
+ }
+
+ if ($scraperCallback !== null) {
+ $processor->setExecutionCallback($scraperCallback);
+ }
+
+ $this->itemPostProcessor->register($processor);
+ return $this;
+ }
+
+ /**
+ * Set ignored URLs for the content grabber.
+ *
+ * @param array $urls URLs
+ *
+ * @return \PicoFeed\Parser\Parser
+ */
+ public function setGrabberIgnoreUrls(array $urls)
+ {
+ $this->itemPostProcessor->getProcessor('PicoFeed\Processor\ScraperProcessor')->ignoreUrls($urls);
+ return $this;
+ }
+
+ /**
+ * Register all supported namespaces to be used within an xpath query.
+ *
+ * @param SimpleXMLElement $xml Feed xml
+ *
+ * @return SimpleXMLElement
+ */
+ public function registerSupportedNamespaces(SimpleXMLElement $xml)
+ {
+ foreach ($this->namespaces as $prefix => $ns) {
+ $xml->registerXPathNamespace($prefix, $ns);
+ }
+
+ return $xml;
+ }
+
+
+}