RSS Canal+

<?php
// v1.0.0

// params
$force = array_key_exists('force', $_GET) ? true : false;
$prog = $_GET['prog'];

$savefile = "config.$prog.json";
if(!file_exists($savefile)) die("unknown prog '{$prog}'");
$data = json_decode(file_get_contents($savefile), true) or die('failed reading data file');

// not from feedburner
if(!$force
    && (!array_key_exists('HTTP_USER_AGENT', $_SERVER) || strpos($_SERVER['HTTP_USER_AGENT'], 'FeedBurner') === FALSE)
    && (array_key_exists('Feed', $data))
) {
    header("Status: 301 Moved Permanently", false, 301);
    header("Location: {$data['Feed']}");
    die();
}

$last_generation_time = filemtime($savefile) or die('failed reading data file age');

// file older than 6 hours ?
if ($force || ((time() - $last_generation_time) > 21600)) {

    $url = $data['Page'];
    $fetched = file_get_contents($url) or die('failed fetching feed');
    $reg = '#<li id="video_(?<vid>\\d+)"#ims'; //#<li id="video_(?<vid>\d+)"#ims

    if(preg_match_all($reg, $fetched, $matches, PREG_SET_ORDER)) {

        $items = array();
        foreach($matches as $match) {
            $vid = (int)$match['vid'];
            $title = sprintf("%s %s", $data['Title'], $vid);
            $url = sprintf("%s?vid=%s", $data['Page'], $vid);

            if(strlen($title) == 0 || strpos($title, '<img') !== FALSE)
                continue;

            $items[$vid] = array(
                'VID' => $vid,
                'TITLE' => $title,
                'URL' => $url
            );
        }
        krsort($items);
    }

    if (count($items) > 0) {
        $data['Items'] = array_values($items);
        file_put_contents($savefile, json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)) or die('failed saving data file');
    }

    $last_generation_time = time();
}

header('Content-Type: application/rss+xml; charset=utf-8');
echo '<'.'?'.'xml version="1.0" encoding="utf-8"'.'?'.'>';
?>

<rss version="2.0">
    <channel>
        <title><?=htmlspecialchars($data['Title'])?></title>
        <description><?=htmlspecialchars($data['Title'])?></description>
        <lastBuildDate><?=date('r', $last_generation_time)?></lastBuildDate>
        <link>http://www.canalplus.fr/</link>
<?php foreach($data['Items'] as $item): ?>
        <item>
            <title><?=htmlspecialchars($item['TITLE'])?></title>
            <link><?=htmlspecialchars($item['URL'])?></link>
        </item>
<?php endforeach; ?>
    </channel>
</rss>