301 lines
8.4 KiB
PHP
301 lines
8.4 KiB
PHP
<?php
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namespace PicoFeed\Parsers;
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use SimpleXMLElement;
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use PicoFeed\Parser;
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use PicoFeed\XmlParser;
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use PicoFeed\Logging;
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use PicoFeed\Feed;
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use PicoFeed\Filter;
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use PicoFeed\Item;
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use PicoFeed\Url;
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/**
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* RSS 2.0 Parser
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*
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* @author Frederic Guillot
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* @package parser
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*/
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class Rss20 extends Parser
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{
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/**
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* Get the path to the items XML tree
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @return SimpleXMLElement
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*/
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public function getItemsTree(SimpleXMLElement $xml)
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{
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return $xml->channel->item;
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}
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/**
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* Find the feed url
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedUrl(SimpleXMLElement $xml, Feed $feed)
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{
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if ($xml->channel->link && $xml->channel->link->count() > 1) {
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foreach ($xml->channel->link as $xml_link) {
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$link = (string) $xml_link;
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if ($link !== '') {
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$feed->url = $link;
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break;
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}
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}
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}
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else {
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$feed->url = (string) $xml->channel->link;
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}
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}
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/**
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* Find the feed description
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedDescription(SimpleXMLElement $xml, Feed $feed)
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{
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$feed->description = (string) $xml->channel->description;
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}
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/**
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* Find the feed logo url
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedLogo(SimpleXMLElement $xml, Feed $feed)
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{
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if (isset($xml->channel->image->url)) {
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$feed->logo = (string) $xml->channel->image->url;
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}
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}
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/**
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* Find the feed title
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedTitle(SimpleXMLElement $xml, Feed $feed)
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{
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$feed->title = Filter::stripWhiteSpace((string) $xml->channel->title) ?: $feed->url;
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}
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/**
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* Find the feed language
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedLanguage(SimpleXMLElement $xml, Feed $feed)
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{
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$feed->language = isset($xml->channel->language) ? (string) $xml->channel->language : '';
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}
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/**
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* Find the feed id
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedId(SimpleXMLElement $xml, Feed $feed)
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{
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$feed->id = $feed->url;
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}
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/**
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* Find the feed date
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*
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* @access public
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* @param SimpleXMLElement $xml Feed xml
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findFeedDate(SimpleXMLElement $xml, Feed $feed)
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{
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$date = isset($xml->channel->pubDate) ? $xml->channel->pubDate : $xml->channel->lastBuildDate;
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$feed->date = $this->parseDate((string) $date);
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}
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/**
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* Find the item date
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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*/
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public function findItemDate(SimpleXMLElement $entry, Item $item)
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{
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$date = XmlParser::getNamespaceValue($entry, $this->namespaces, 'date');
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if (empty($date)) {
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$date = XmlParser::getNamespaceValue($entry, $this->namespaces, 'updated');
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}
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if (empty($date)) {
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$date = (string) $entry->pubDate;
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}
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$item->date = $this->parseDate($date);
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}
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/**
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* Find the item title
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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*/
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public function findItemTitle(SimpleXMLElement $entry, Item $item)
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{
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$item->title = Filter::stripWhiteSpace((string) $entry->title);
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if (empty($item->title)) {
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$item->title = $item->url;
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}
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}
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/**
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* Find the item author
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*
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* @access public
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* @param SimpleXMLElement $xml Feed
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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*/
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public function findItemAuthor(SimpleXMLElement $xml, SimpleXMLElement $entry, Item $item)
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{
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$item->author = XmlParser::getNamespaceValue($entry, $this->namespaces, 'creator');
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if (empty($item->author)) {
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if (isset($entry->author)) {
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$item->author = (string) $entry->author;
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}
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else if (isset($xml->channel->webMaster)) {
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$item->author = (string) $xml->channel->webMaster;
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}
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}
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}
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/**
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* Find the item content
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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*/
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public function findItemContent(SimpleXMLElement $entry, Item $item)
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{
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$content = XmlParser::getNamespaceValue($entry, $this->namespaces, 'encoded');
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if (empty($content) && $entry->description->count() > 0) {
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$content = (string) $entry->description;
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}
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$item->content = $content;
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}
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/**
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* Find the item URL
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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*/
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public function findItemUrl(SimpleXMLElement $entry, Item $item)
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{
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$links = array(
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XmlParser::getNamespaceValue($entry, $this->namespaces, 'origLink'),
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isset($entry->link) ? (string) $entry->link : '',
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XmlParser::getNamespaceValue($entry, $this->namespaces, 'link', 'href'),
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isset($entry->guid) ? (string) $entry->guid : '',
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);
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foreach ($links as $link) {
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if (! empty($link) && filter_var($link, FILTER_VALIDATE_URL) !== false) {
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$item->url = $link;
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break;
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}
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}
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}
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/**
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* Genereate the item id
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findItemId(SimpleXMLElement $entry, Item $item, Feed $feed)
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{
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$item_permalink = $item->url;
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if ($this->isExcludedFromId($feed->url)) {
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$feed_permalink = '';
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}
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else {
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$feed_permalink = $feed->url;
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}
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if ($entry->guid->count() > 0 && ((string) $entry->guid['isPermaLink'] === 'false' || ! isset($entry->guid['isPermaLink']))) {
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$item->id = $this->generateId($item_permalink, $feed_permalink, (string) $entry->guid);
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}
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else {
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$item->id = $this->generateId($item_permalink, $feed_permalink);
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}
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}
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/**
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* Find the item enclosure
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findItemEnclosure(SimpleXMLElement $entry, Item $item, Feed $feed)
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{
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if (isset($entry->enclosure)) {
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$item->enclosure_url = XmlParser::getNamespaceValue($entry->enclosure, $this->namespaces, 'origEnclosureLink');
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if (empty($item->enclosure_url)) {
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$item->enclosure_url = isset($entry->enclosure['url']) ? (string) $entry->enclosure['url'] : '';
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}
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$item->enclosure_type = isset($entry->enclosure['type']) ? (string) $entry->enclosure['type'] : '';
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$item->enclosure_url = Url::resolve($item->enclosure_url, $feed->url);
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}
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}
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/**
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* Find the item language
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*
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* @access public
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* @param SimpleXMLElement $entry Feed item
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* @param \PicoFeed\Item $item Item object
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* @param \PicoFeed\Feed $feed Feed object
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*/
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public function findItemLanguage(SimpleXMLElement $entry, Item $item, Feed $feed)
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{
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$item->language = $feed->language;
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}
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}
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