188 lines
4.5 KiB
PHP
188 lines
4.5 KiB
PHP
<?php
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namespace PicoFeed;
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require_once __DIR__.'/Filter.php';
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abstract class Parser
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{
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protected $content = '';
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public $id = '';
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public $url = '';
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public $title = '';
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public $updated = '';
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public $items = array();
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abstract public function execute();
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public function __construct($content)
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{
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$this->content = $content;
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}
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public function filterHtml($str, $item_url)
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{
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$content = '';
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if ($str) {
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$filter = new Filter($str, $item_url);
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$content = $filter->execute();
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}
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return $content;
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}
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}
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class Atom extends Parser
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{
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public function execute()
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{
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try {
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\libxml_use_internal_errors(true);
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$xml = new \SimpleXMLElement($this->content);
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$this->url = $this->getUrl($xml);
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$this->title = (string) $xml->title;
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$this->id = (string) $xml->id;
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$this->updated = strtotime((string) $xml->updated);
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$author = (string) $xml->author->name;
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foreach ($xml->entry as $entry) {
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if (isset($entry->author->name)) {
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$author = $entry->author->name;
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}
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$item = new \StdClass;
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$item->id = (string) $entry->id;
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$item->title = (string) $entry->title;
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$item->url = $this->getUrl($entry);
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$item->updated = strtotime((string) $entry->updated);
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$item->author = $author;
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$item->content = $this->filterHtml($this->getContent($entry), $item->url);
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$this->items[] = $item;
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}
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}
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catch (\Exception $e) {
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}
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return $this;
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}
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public function getContent($entry)
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{
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if (isset($entry->content) && ! empty($entry->content)) {
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if (count($entry->content->children())) {
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return (string) $entry->content->asXML();
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}
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else {
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return (string) $entry->content;
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}
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}
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else if (isset($entry->summary) && ! empty($entry->summary)) {
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return (string) $entry->summary;
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}
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return '';
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}
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public function getUrl($xml)
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{
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foreach ($xml->link as $link) {
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if ((string) $link['type'] === 'text/html') {
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return (string) $link['href'];
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}
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}
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return (string) $xml->link['href'];
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}
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}
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class Rss20 extends Parser
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{
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public function execute()
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{
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try {
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\libxml_use_internal_errors(true);
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$xml = new \SimpleXMLElement($this->content);
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$ns = $xml->getNamespaces(true);
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$this->title = (string) $xml->channel->title;
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$this->url = (string) $xml->channel->link;
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$this->id = $this->url;
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$this->updated = isset($xml->channel->pubDate) ? (string) $xml->channel->pubDate : (string) $xml->channel->lastBuildDate;
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$this->updated = strtotime($this->updated);
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foreach ($xml->channel->item as $entry) {
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$author = '';
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$content = '';
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$pubdate = '';
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$link = '';
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if (isset($ns['feedburner'])) {
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$ns_fb = $entry->children($ns['feedburner']);
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$link = $ns_fb->origLink;
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}
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if (isset($ns['dc'])) {
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$ns_dc = $entry->children($ns['dc']);
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$author = (string) $ns_dc->creator;
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$pubdate = (string) $ns_dc->date;
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}
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if (isset($ns['content'])) {
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$ns_content = $entry->children($ns['content']);
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$content = (string) $ns_content->encoded;
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}
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if ($content === '' && isset($entry->description)) {
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$content = (string) $entry->description;
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}
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$item = new \StdClass;
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$item->id = (string) $entry->guid;
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$item->title = (string) $entry->title;
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$item->url = $link ?: (string) $entry->link;
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$item->updated = strtotime($pubdate ?: (string) $entry->pubDate) ?: $this->updated;
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$item->content = $this->filterHtml($content, $item->url);
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$item->author = $author ?: (string) $xml->channel->webMaster;
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$this->items[] = $item;
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}
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}
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catch (\Exception $e) {
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}
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return $this;
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}
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}
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