172 lines
4.2 KiB
PHP
172 lines
4.2 KiB
PHP
<?php
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namespace PicoFeed\Serialization;
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use SimpleXmlElement;
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use StdClass;
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use PicoFeed\Logging\Logger;
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use PicoFeed\Parser\XmlParser;
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/**
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* OPML Import
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*
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* @author Frederic Guillot
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* @package Serialization
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*/
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class Import
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{
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/**
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* OPML file content
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*
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* @access private
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* @var string
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*/
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private $content = '';
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/**
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* Subscriptions
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*
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* @access private
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* @var array
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*/
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private $items = array();
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/**
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* Constructor
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*
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* @access public
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* @param string $content OPML file content
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*/
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public function __construct($content)
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{
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$this->content = $content;
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}
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/**
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* Parse the OPML file
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*
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* @access public
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* @return array|false
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*/
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public function execute()
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{
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Logger::setMessage(get_called_class().': start importation');
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$xml = XmlParser::getSimpleXml(trim($this->content));
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if ($xml === false || $xml->getName() !== 'opml' || ! isset($xml->body)) {
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Logger::setMessage(get_called_class().': OPML tag not found or malformed XML document');
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return false;
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}
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$this->parseEntries($xml->body);
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Logger::setMessage(get_called_class().': '.count($this->items).' subscriptions found');
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return $this->items;
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}
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/**
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* Parse each entries of the subscription list
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*
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* @access public
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* @param SimpleXMLElement $tree XML node
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*/
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public function parseEntries($tree)
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{
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if (isset($tree->outline)) {
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foreach ($tree->outline as $item) {
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if (isset($item->outline)) {
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$this->parseEntries($item);
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}
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else if ((isset($item['text']) || isset($item['title'])) && isset($item['xmlUrl'])) {
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$entry = new StdClass;
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$entry->category = $this->findCategory($tree);
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$entry->title = $this->findTitle($item);
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$entry->feed_url = $this->findFeedUrl($item);
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$entry->site_url = $this->findSiteUrl($item, $entry);
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$entry->type = $this->findType($item);
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$entry->description = $this->findDescription($item, $entry);
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$this->items[] = $entry;
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}
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}
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}
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}
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/**
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* Find category
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*
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* @access public
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* @param SimpleXmlElement $tree XML tree
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* @return string
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*/
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public function findCategory(SimpleXmlElement $tree)
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{
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return isset($tree['title']) ? (string) $tree['title'] : (string) $tree['text'];
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}
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/**
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* Find title
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*
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* @access public
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* @param SimpleXmlElement $item XML tree
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* @return string
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*/
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public function findTitle(SimpleXmlElement $item)
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{
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return isset($item['title']) ? (string) $item['title'] : (string) $item['text'];
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}
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/**
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* Find feed url
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*
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* @access public
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* @param SimpleXmlElement $item XML tree
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* @return string
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*/
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public function findFeedUrl(SimpleXmlElement $item)
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{
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return (string) $item['xmlUrl'];
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}
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/**
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* Find site url
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*
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* @access public
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* @param SimpleXmlElement $item XML tree
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* @param StdClass $entry Feed entry
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* @return string
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*/
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public function findSiteUrl(SimpleXmlElement $item, StdClass $entry)
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{
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return isset($item['htmlUrl']) ? (string) $item['htmlUrl'] : $entry->feed_url;
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}
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/**
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* Find type
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*
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* @access public
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* @param SimpleXmlElement $item XML tree
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* @return string
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*/
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public function findType(SimpleXmlElement $item)
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{
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return isset($item['version']) ? (string) $item['version'] : isset($item['type']) ? (string) $item['type'] : 'rss';
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}
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/**
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* Find description
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*
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* @access public
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* @param SimpleXmlElement $item XML tree
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* @param StdClass $entry Feed entry
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* @return string
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*/
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public function findDescription(SimpleXmlElement $item, StdClass $entry)
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{
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return isset($item['description']) ? (string) $item['description'] : $entry->title;
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}
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}
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