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<?php
/**
* ownCloud - News app
*
* @author Alessandro Cosentino
* Copyright (c) 2012 - Alessandro Cosentino <cosenal@gmail.com>
*
* This file is licensed under the Affero General Public License version 3 or later.
* See the COPYING-README file
*
*/
class OPMLParser {
private $title;
private $body;
private $data;
private $count;
private function __construct() {
$this->data = array();
$this->count = 0;
}
/**
* @brief
* @returns the title element from the head section of the OPML file
*/
public function getTitle() {
return $this->title;
}
/**
* @brief
* @returns the number of feeds found in the OPML file
*/
public function getData() {
return $this->data;
}
/**
* @brief
* @returns the number of feeds found in the file
*/
public function getCount() {
return $this->count;
}
/**
* @brief This is used as a utility private function by the method OPMLParser::parse
*/
private static function parseFolder($rawfolder, &$count) {
$list = array();
foreach ($rawfolder->outline as $rawcollection) {
if ($rawcollection['type'] == 'rss') {
$collection = self::parseFeed($rawcollection);
$count++;
}
else {
$name = (string)$rawcollection['text'];
$children = self::parseFolder($rawcollection, $count);
$collection = new OCA\News\Folder($name);
$collection->addChildren($children);
}
if ($collection !== null) {
$list[] = $collection;
}
}
return $list;
}
private static function parseFeed($rawfeed) {
$url = (string)$rawfeed['xmlUrl'];
$title = (string)$rawfeed['title'];
$feed = new OCA\News\Feed($url, $title);
return $feed;
}
/**
* @brief
* @param $raw the XML string to be parsed
* @return an object of the OPMLParser class itself
* or null if the parsing failed
* @throws
*/
public static function parse($raw){
$parsed = new OPMLParser();
$xml_parser = new SimpleXMLElement($raw, LIBXML_NOERROR);
$parsed->title = (string)$xml_parser->head->title;
$parsed->body = $xml_parser->body;
if ($parsed->body != null) {
$parsed->data = self::parseFolder($parsed->body, $parsed->count);
return $parsed;
} else {
return null;
}
}
}
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