*/
if (!class_exists("Rss_pi_opml")) {
class Rss_pi_opml {
var $options;
var $errors;
/*
* The constructor
*/
function __construct() {
$this->options = get_option('rss_pi_feeds', array());
}
/*
* Exports all feeds, no Settings exported
*/
function export() {
if ( $this->options['settings']['is_key_valid'] ) {
$feeds = $this->options['feeds'];
$title = get_option('blogname');
$ownerEmail = get_option('admin_email');
if ( ! count($feeds) || ! trim($title) || ! $ownerEmail ) {
return;
}
if ( ! $title || ! $ownerEmail ) {
return;
}
$output = '';
$output .= $this->_header($title, $ownerEmail);
foreach ( $feeds as $feed ) {
$output .= $this->_entry($feed['url'], $feed['name']);
}
$output .= $this->_footer();
$filename = "rss_pi_export_" . date("Y-m-d") . ".opml";
$this->_send_headers($filename);
echo "\xEF\xBB\xBF";
print($output);
die();
}
}
/*
* Imports feeds from file
*/
function import($feeds) {
if ( $this->options['settings']['is_key_valid'] ) {
$file = $_FILES['import_opml']['tmp_name'];
$opml = file_get_contents($file);
@unlink($file);
// apply some validation fixes:
// - & -> &
$opml = preg_replace( '/(&(?!amp;))/', '&', $opml );
$opml = new OPMLParser($opml);
$feeds = $this->_parse_data( $opml->data, $feeds );
$this->options['feeds'] = $feeds;
}
return $feeds;
}
private function _parse_data($data, $feeds) {
if ( ! is_array($data) ) {
return $feeds;
}
foreach ( $data as $k => $item ) {
if ( isset($item['xmlurl']) && isset($item['text']) && trim($item['xmlurl']) !== '' ) {
// if ( $feed['xmlurl'] && filter_var($feed['xmlurl'], FILTER_VALIDATE_URL) && $this->_feed_url_exists( $feeds, $feed['xmlurl'] ) )
if ( $this->_feed_url_exists( $feeds, $item['xmlurl'] ) ) {
$this->errors[] = 'Duplicate Feed url: ' . $item['xmlurl'];
continue;
}
if ( $this->_feed_name_exists( $feeds, $item['text'] ) ) {
$this->errors[] = 'Duplicate Feed name: ' . $item['text'];
continue;
}
$c = count($feeds);
array_push($feeds, array(
'id' => uniqid("54d4c" . $c),
'url' => $item['xmlurl'],
'name' => $item['text'],
// default values
'max_posts' => 10,
'author_id' => get_current_user_id(),
'category_id' => array(1),
'tags_id' => '',
'keywords' => '',
'strip_html' => 'false',
'nofollow_outbound' => 'false',
'automatic_import_categories' => 'false',
'automatic_import_author' => 'false',
'feed_status' => 'active',
'canonical_urls' => 'my_blog'
));
} else {
$feeds = $this->_parse_data($item, $feeds);
}
}
return $feeds;
}
private function _feed_url_exists($feeds, $url) {
if ( ! empty($feeds) && ! empty($url) ) {
for ( $i = 0; $i < count($feeds); $i++ ) {
if ( $feeds[$i]['url'] == $url ) {
return true;
}
}
return false;
}
}
private function _feed_name_exists($feeds, $name) {
if ( ! empty($feeds) && ! empty($name) ) {
for ( $i = 0; $i < count($feeds); $i++ ) {
if ( $feeds[$i]['name'] == $name ) {
return true;
}
}
return false;
}
}
/**
* basic opml header
* @param string $opmlTitle
* @param string $opmlOwnerEmail
* @return string
*/
private function _header($title, $ownerEmail) {
// $result = "<-?xml version=\"1.0\" encoding=\"ISO-8859-1\"?->\n"
$result = "\n"
. "\n"
. "\n"
. " " . $title . "\n"
. " " . date("r") . "\n"
// . " " . $ownerName . "\n"
. " " . $ownerEmail . "\n"
. " \n"
. " \n";
return $result;
}
/**
* just returns a test footer
* @return string
*/
private function _footer() {
$result = " \n"
. "";
return $result;
}
/**
* creates an XML entry for the OPML file
* @param string $feedURL
* @param string $feedTitle
* @return string
*/
private function _entry($feedURL, $feedTitle) {
$result = " \n";
return $result;
}
private function _send_headers($filename) {
// disable caching
$now = gmdate("D, d M Y H:i:s");
header("Expires: Tue, 01 Jan 2000 01:00:00 GMT"); // a date in the past
header("Cache-Control: max-age=0, no-cache, must-revalidate, proxy-revalidate");
header("Last-Modified: {$now} GMT");
// force download
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
// disposition / encoding on response body
header("Content-Disposition: attachment;filename={$filename}");
header("Content-Transfer-Encoding: binary");
header("Content-type: text/html;charset=utf-8");
}
}
// CLass Rss_pi_opml
}