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<?php
// $Id$
/**
* Class definition for Common Syndication Parser.
*
* Parses RSS and Atom feeds.
*/
class FeedsSimplePieParser extends FeedsParser {
/**
* Parses a raw string and returns a Feed object from it.
*/
public function parse(FeedsFetcherResult $fetcherResult, FeedsSource $source) {
if ($fetcherResult->type == 'text/filepath') {
$string = file_get_contents($fetcherResult->value);
}
else {
$string = $fetcherResult->value;
}
feeds_include_library('simplepie.inc', 'simplepie');
// Initialize SimplePie.
$parser = new SimplePie();
$parser->set_raw_data($string);
$parser->set_stupidly_fast(TRUE);
$parser->encode_instead_of_strip(FALSE);
// @todo: is caching effective when we pass in raw data?
$parser->enable_cache(TRUE);
$parser->set_cache_location($this->cacheDirectory());
$parser->init();
// Construct the standard form of the parsed feed
$feed = array();
$feed['title'] = ($title = $parser->get_title()) ? $title : $this->createTitle($parser->get_description());
$feed['description'] = $parser->get_description();
$feed['link'] = html_entity_decode($parser->get_link());
$feed['items'] = array();
$items_num = $parser->get_item_quantity();
for ($i = 0; $i < $items_num; $i++) {
$item = array();
$simplepie_item = $parser->get_item($i);
$item['title'] = ($title = $simplepie_item->get_title()) ? $title : $this->createTitle($simplepie_item->get_content());
$item['description'] = $simplepie_item->get_content();
$item['url'] = html_entity_decode($simplepie_item->get_link());
// U = std. unix timestamp
$item['timestamp'] = $simplepie_item->get_date("U");
$item['guid'] = $simplepie_item->get_id();
// Use URL as GUID if there is no GUID.
if (empty($item['guid'])) {
$item['guid'] = $item['url'];
}
$item['author'] = $simplepie_item->get_author();
// Enclosures
$enclosures = $simplepie_item->get_enclosures();
if (is_array($enclosures)) {
foreach ($enclosures as $enclosure) {
$mime = $enclosure->get_real_type();
if ($mime != '') {
list($type, $subtype) = split('/', $mime);
$item['enclosures'][$type][$subtype][] = $enclosure;
}
}
}
// Location
$latitude = $simplepie_item->get_latitude();
$longitude = $simplepie_item->get_longitude();
if (!is_null($latitude) && !is_null($longitude)) {
$item['location_latitude'][] = $latitude;
$item['location_longitude'][] = $longitude;
}
// Extract tags related to the item
$simplepie_tags = $simplepie_item->get_categories();
$tags = array();
$domains = array();
if (count($simplepie_tags) > 0) {
foreach ($simplepie_tags as $tag) {
$tags[] = (string) $tag->term;
$domain = (string) $tag->get_scheme();
if (!empty($domain)) {
if (!isset($domains[$domain])) {
$domains[$domain] = array();
}
$domains[$domain][] = count($tags) - 1;
}
}
}
$item['domains'] = $domains;
$item['tags'] = $tags;
// Stick the raw data onto the feed item.
$item['raw'] = $simplepie_item->data;
$feed['items'][] = $item;
}
// Release parser.
unset($parser);
return new FeedsParserResult($feed, 'syndication');
}
/**
* Return mapping sources.
*/
public function getMappingSources() {
return array(
'title' => t('Title'),
'description' => t('Description'),
'author' => t('Author'),
'timestamp' => t('Published date'),
'date_raw' => t('Published date (raw)'),
'url' => t('Item URL (link)'),
'guid' => t('Item GUID'),
'tags' => t('Categories'),
'domains' => t('Category domains'),
'location_latitude' => t('Latitudes'),
'location_longitude' => t('Longitudes'),
'enclosures' => t('Enclosures'),
);
}
/**
* Returns cache directory. Creates it if it doesn't exist.
*/
protected function cacheDirectory() {
$directory = file_directory_path() .'/simplepie';
file_check_directory($directory, TRUE);
return $directory;
}
/**
* Generate a title from a random text.
*/
protected function createTitle($text = FALSE) {
// Explode to words and use the first 3 words.
$words = preg_split("/[\s,]+/", $text);
$words = array_slice($words, 0, 3);
return implode(' ', $words);
}
}