function lightboxgallery_rss_feed($gallery)
{
global $CFG;
$result = "";
$images = lightboxgallery_directory_images($CFG->dataroot . '/' . $gallery->course . '/' . $gallery->folder);
$captions = array();
if ($cobjs = get_records_select('lightboxgallery_image_meta', "metatype = 'caption' AND gallery = {$gallery->id}")) {
foreach ($cobjs as $cobj) {
$captions[$cobj->image] = $cobj->description;
}
}
if (!empty($images)) {
$webroot = lightboxgallery_get_image_url($gallery->id);
$dataroot = $CFG->dataroot . '/' . $gallery->course . '/' . $gallery->folder;
$result .= "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n";
$result .= "<rss version=\"2.0\" xmlns:media=\"http://search.yahoo.com/mrss\" xmlns:atom=\"http://www.w3.org/2005/Atom\">";
$result .= rss_start_tag('channel', 1, true);
$result .= rss_full_tag('title', 2, false, strip_tags(format_string($gallery->name, true)));
$result .= rss_full_tag('link', 2, false, $CFG->wwwroot . '/mod/lightboxgallery/view.php?l=' . $gallery->id);
$result .= rss_full_tag('description', 2, false, format_string($gallery->description, true));
$result .= rss_start_tag('image', 2, true);
$result .= rss_full_tag('url', 3, false, $CFG->pixpath . '/i/rsssitelogo.gif');
$result .= rss_full_tag('title', 3, false, 'moodle');
$result .= rss_full_tag('link', 3, false, $CFG->wwwroot);
$result .= rss_full_tag('width', 3, false, '140');
$result .= rss_full_tag('height', 3, false, '35');
$result .= rss_end_tag('image', 2, true);
$counter = 1;
foreach ($images as $image) {
$description = isset($captions[$image]) ? $captions[$image] : $image;
$result .= rss_start_tag('item', 2, true);
$result .= rss_full_tag('title', 3, false, strip_tags($image));
$result .= rss_full_tag('link', 3, false, $webroot . '/' . $image);
$result .= rss_full_tag('guid', 3, false, 'img' . $counter);
$result .= rss_full_tag('media:description', 3, false, $description);
$result .= rss_full_tag('media:thumbnail', 3, false, '', array('url' => lightboxgallery_get_image_url($gallery->id, $image, true)));
$result .= rss_full_tag('media:content', 3, false, '', array('url' => $webroot . '/' . $image, 'type' => mime_content_type($dataroot . '/' . $image)));
$result .= rss_end_tag('item', 2, true);
$counter++;
}
$result .= rss_standard_footer();
}
return $result;
}
/**
* Return the while xml element, including content
*
* @param string $tag the xml tag name
* @param int $level the indentation level
* @param bool $endline whether or not to start new tags on a new line
* @param string $content the text to go inside the tag
* @param array $attributes the attributes of the xml tag
* @return string the whole xml element
*/
function rss_full_tag($tag, $level = 0, $endline = true, $content, $attributes = null)
{
$st = rss_start_tag($tag, $level, $endline, $attributes);
$co = "";
$co = preg_replace("/\r\n|\r/", "\n", htmlspecialchars($content));
$et = rss_end_tag($tag, 0, true);
return $st . $co . $et;
}
function lightboxgallery_rss_header($title = null, $link = null, $description = null)
{
global $CFG, $USER, $OUTPUT;
$status = true;
$result = "";
$site = get_site();
if ($status) {
// Calculate title, link and description.
if (empty($title)) {
$title = format_string($site->fullname);
}
if (empty($link)) {
$link = $CFG->wwwroot;
}
if (empty($description)) {
$description = $site->summary;
}
// XML headers.
$result .= "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
$result .= "<rss version=\"2.0\" xmlns:media=\"http://search.yahoo.com/mrss\"" . "xmlns:atom=\"http://www.w3.org/2005/Atom\">\n";
// Open the channel.
$result .= rss_start_tag('channel', 1, true);
// Write channel info.
$result .= rss_full_tag('title', 2, false, strip_tags($title));
$result .= rss_full_tag('link', 2, false, $link);
$result .= rss_full_tag('description', 2, false, $description);
$result .= rss_full_tag('generator', 2, false, 'Moodle');
if (!empty($USER->lang)) {
$result .= rss_full_tag('language', 2, false, substr($USER->lang, 0, 2));
}
$today = getdate();
$result .= rss_full_tag('copyright', 2, false, '© ' . $today['year'] . ' ' . format_string($site->fullname));
/*
if (!empty($USER->email)) {
$result .= rss_full_tag('managingEditor', 2, false, fullname($USER));
$result .= rss_full_tag('webMaster', 2, false, fullname($USER));
}
*/
// Write image info.
$rsspix = $OUTPUT->pix_url('i/rsssitelogo');
// Write the info.
$result .= rss_start_tag('image', 2, true);
$result .= rss_full_tag('url', 3, false, $rsspix);
$result .= rss_full_tag('title', 3, false, 'moodle');
$result .= rss_full_tag('link', 3, false, $CFG->wwwroot);
$result .= rss_full_tag('width', 3, false, '140');
$result .= rss_full_tag('height', 3, false, '35');
$result .= rss_end_tag('image', 2, true);
}
if (!$status) {
return false;
} else {
return $result;
}
}
/**
* Builds the .pcast file with the users RSS token
* @param object $pcast
* @param string $url
* @return string
*/
function pcast_build_pcast_file($pcast, $url)
{
//xml headers
$result = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
$result .= "<!DOCTYPE pcast PUBLIC \"-//Apple Computer//DTD PCAST 1.0//EN\" \"http://www.itunes.com/DTDs/pcast-1.0.dtd\">\n";
$result .= rss_start_tag('pcast version="1.0"', 1, true);
$result .= rss_start_tag('channel', 1, true);
$result .= rss_start_tag('link rel="feed" type="application/rss+xml" href="' . $url . '" /', 2, true);
$result .= rss_full_tag('title', 2, false, $pcast->name);
$category = pcast_rss_category_lookup($pcast);
if (isset($category->top->name) && !empty($category->top->name)) {
$result .= rss_full_tag('category', 2, false, $category->top->name);
}
if (isset($category->nested->name) && !empty($category->nested->name)) {
$result .= rss_full_tag('category', 2, false, $category->nested->name);
}
if (isset($pcast->subtitle) && !empty($category->subtitle)) {
$result .= rss_full_tag('subtitle', 2, false, $pcast->subtitle);
}
$result .= rss_end_tag('channel', 1, true);
$result .= rss_end_tag('pcast', 1, true);
return $result;
}
