private function html()
{
if (!count($this->args['data']['feeds'])) {
return '';
}
$dataAccessor = 'podcastData' . self::get_random_string();
$dom = new \Podlove\DomDocumentFragment();
$script_data_tag = $dom->createElement('script');
$script_data_tag->appendChild($dom->createTextNode(sprintf("window.{$dataAccessor} = %s;", json_encode($this->args['data']))));
$script_button_tag = $dom->createElement('script');
$script_button_tag->setAttribute('class', 'podlove-subscribe-button');
$script_button_tag->setAttribute('src', 'https://cdn.podlove.org/subscribe-button/javascripts/app.js');
$script_button_tag->setAttribute('data-json-data', $dataAccessor);
$script_button_tag->setAttribute('data-language', self::language($this->args['language']));
$script_button_tag->setAttribute('data-size', self::size($this->args['size'], $this->args['width']));
if ($this->args['colors']) {
$script_button_tag->setAttribute('data-colors', $this->args['colors']);
}
if ($this->args['buttonid']) {
$script_button_tag->setAttribute('data-buttonid', $this->args['buttonid']);
}
if ($this->args['hide'] && in_array($args['hide'], [1, '1', true, 'true', 'on'])) {
$script_button_tag->setAttribute('data-hide', true);
}
// ensure there is a closing script tag
$script_button_tag->appendChild($dom->createTextNode(' '));
$dom->appendChild($script_data_tag);
$dom->appendChild($script_button_tag);
return (string) $dom;
}
/**
* Get HTML image tag for resized image.
*
* Examples
*
* $image->image(); // returns image tag
*
* @param array $args List of arguments
* - id: Set image tag "id" attribute.
* - class: Set image tag "class" attribute.
* - style: Set image tag "style" attribute.
* - alt: Set image tag "alt" attribute.
* - title: Set image tag "title" attribute.
* - width: Image width. Set width and leave height blank to keep the orinal aspect ratio.
* - height: Image height. Set height and leave width blank to keep the orinal aspect ratio.
* - attributes: List of other HTML attributes, for example: ['data-foo' => 'bar']
* @return string HTML image tag
*/
public function image($args = [])
{
$defaults = ['id' => '', 'class' => '', 'style' => '', 'alt' => '', 'title' => '', 'width' => $this->width, 'height' => $this->height, 'attributes' => []];
$args = wp_parse_args($args, $defaults);
// put everything in 'attributes' for easy iteration
foreach (['id', 'class', 'style', 'alt', 'title', 'width', 'height'] as $attr) {
if ($args[$attr]) {
$args['attributes'][$attr] = $args[$attr];
}
}
$dom = new \Podlove\DomDocumentFragment();
$img = $dom->createElement('img');
foreach ($args['attributes'] as $key => $value) {
$img->setAttribute($key, $value);
}
$img->setAttribute('src', $this->url());
if ($this->retina && ($srcset = $this->srcset())) {
$img->setAttribute('srcset', $srcset);
}
$dom->appendChild($img);
return (string) $dom;
}
function override_feed_head($hook, $podcast, $feed, $format)
{
$filter_hooks = array('podlove_feed_itunes_author', 'podlove_feed_itunes_owner', 'podlove_feed_itunes_subtitle', 'podlove_feed_itunes_keywords', 'podlove_feed_itunes_summary', 'podlove_feed_itunes_complete', 'podlove_feed_itunes_explicit');
foreach ($filter_hooks as $filter) {
add_filter($filter, 'convert_chars');
}
add_filter('podlove_feed_content', '\\Podlove\\Feeds\\prepare_for_feed');
remove_action($hook, 'the_generator');
add_action($hook, function () use($hook) {
switch ($hook) {
case 'rss2_head':
$gen = '<generator>' . \Podlove\get_plugin_header('Name') . ' v' . \Podlove\get_plugin_header('Version') . '</generator>';
break;
case 'atom_head':
$gen = '<generator uri="' . \Podlove\get_plugin_header('PluginURI') . '" version="' . \Podlove\get_plugin_header('Version') . '">' . \Podlove\get_plugin_header('Name') . '</generator>';
break;
}
echo $gen;
});
add_action($hook, function () use($feed) {
echo $feed->get_self_link();
echo $feed->get_alternate_links();
}, 9);
// add rss image
add_action($hook, function () use($podcast, $hook) {
$image = ['url' => $podcast->cover_art()->url(), 'title' => $podcast->title, 'link' => apply_filters('podlove_feed_link', \Podlove\get_landing_page_url())];
$image = apply_filters('podlove_feed_image', $image);
if (!$image['url']) {
return;
}
// remove WordPress provided favicon
remove_action($hook, 'rss2_site_icon');
// generate our own image tag
$dom = new \Podlove\DomDocumentFragment();
$image_tag = $dom->createElement('image');
foreach ($image as $tag_name => $tag_text) {
if ($tag_text) {
$tag = $dom->createElement($tag_name);
$tag_text = $dom->createTextNode($tag_text);
$tag->appendChild($tag_text);
$image_tag->appendChild($tag);
}
}
$dom->appendChild($image_tag);
echo (string) $dom;
}, 5);
// let it run early so we can stop the `rss2_site_icon` call
add_action($hook, function () use($podcast, $feed, $format) {
echo PHP_EOL;
$author = "\t" . sprintf('<itunes:author>%s</itunes:author>', $podcast->author_name);
echo apply_filters('podlove_feed_itunes_author', $author);
echo PHP_EOL;
$summary = "\t" . sprintf('<itunes:summary>%s</itunes:summary>', $podcast->summary);
echo apply_filters('podlove_feed_itunes_summary', $summary);
echo PHP_EOL;
$categories = \Podlove\Itunes\categories(false);
$category_html = '';
for ($i = 1; $i <= 3; $i++) {
$category_id = $podcast->{'category_' . $i};
if (!$category_id) {
continue;
}
list($cat, $subcat) = explode('-', $category_id);
if ($subcat == '00') {
$category_html .= sprintf('<itunes:category text="%s"></itunes:category>', htmlspecialchars($categories[$category_id]));
} else {
$category_html .= sprintf('<itunes:category text="%s"><itunes:category text="%s"></itunes:category></itunes:category>', htmlspecialchars($categories[$cat . '-00']), htmlspecialchars($categories[$category_id]));
}
}
echo apply_filters('podlove_feed_itunes_categories', $category_html);
echo PHP_EOL;
$owner = sprintf('
<itunes:owner>
<itunes:name>%s</itunes:name>
<itunes:email>%s</itunes:email>
</itunes:owner>', $podcast->owner_name, $podcast->owner_email);
echo "\t" . apply_filters('podlove_feed_itunes_owner', $owner);
echo PHP_EOL;
if ($podcast->cover_art()->url()) {
$coverimage = sprintf('<itunes:image href="%s" />', $podcast->cover_art()->url());
} else {
$coverimage = '';
}
echo "\t" . apply_filters('podlove_feed_itunes_image', $coverimage);
echo PHP_EOL;
$subtitle = sprintf('<itunes:subtitle>%s</itunes:subtitle>', $podcast->subtitle);
echo "\t" . apply_filters('podlove_feed_itunes_subtitle', $subtitle);
echo PHP_EOL;
$keywords = sprintf('<itunes:keywords>%s</itunes:keywords>', $podcast->keywords);
echo "\t" . apply_filters('podlove_feed_itunes_keywords', $keywords);
echo PHP_EOL;
$block = sprintf('<itunes:block>%s</itunes:block>', $feed->enable ? 'no' : 'yes');
echo "\t" . apply_filters('podlove_feed_itunes_block', $block);
echo PHP_EOL;
$explicit = sprintf('<itunes:explicit>%s</itunes:explicit>', $podcast->explicit == 2 ? 'clean' : ($podcast->explicit ? 'yes' : 'no'));
echo "\t" . apply_filters('podlove_feed_itunes_explicit', $explicit);
echo PHP_EOL;
$complete = sprintf('<itunes:complete>%s</itunes:complete>', $podcast->complete ? 'yes' : 'no');
echo apply_filters('podlove_feed_itunes_complete', $podcast->complete ? "\t{$complete}" : '');
echo PHP_EOL;
do_action('podlove_append_to_feed_head', $podcast, $feed, $format);
});
}
public static function prepare_feed($feed_slug)
{
global $wp_query;
add_action('rss2_ns', function () {
echo 'xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" ';
echo 'xmlns:psc="http://podlove.org/simple-chapters" ';
echo 'xmlns:content="http://purl.org/rss/1.0/modules/content/" ';
echo 'xmlns:fh="http://purl.org/syndication/history/1.0" ';
});
$podcast = Model\Podcast::get();
if (!($feed = Model\Feed::find_one_by_slug($feed_slug))) {
self::wp_404();
}
if (!($episode_asset = $feed->episode_asset())) {
self::wp_404();
}
$file_type = $episode_asset->file_type();
add_filter('podlove_feed_enclosure', function ($enclosure, $enclosure_url, $enclosure_file_size, $mime_type, $media_file) {
if ($enclosure_file_size < 0) {
$enclosure_file_size = 0;
}
$dom = new \Podlove\DomDocumentFragment();
$element = $dom->createElement('enclosure');
$attributes = ['url' => $enclosure_url, 'length' => $enclosure_file_size, 'type' => $mime_type];
$attributes = apply_filters('podlove_feed_enclosure_attributes', $attributes, $media_file);
foreach ($attributes as $k => $v) {
$element->setAttribute($k, $v);
}
$dom->appendChild($element);
return (string) $dom;
}, 10, 5);
override_feed_title($feed);
override_feed_description($feed);
override_feed_language($feed);
override_feed_head('rss2_head', $podcast, $feed, $file_type);
override_feed_entry('rss2_item', $podcast, $feed, $file_type);
add_action('rss2_item', function () {
if (apply_filters('podlove_feed_show_summary', true)) {
echo "<description><![CDATA[";
\Podlove\Feeds\the_description();
echo "]]></description>";
}
}, 9);
add_action('rss2_head', function () use($podcast, $feed) {
global $wp_query;
$current_page = get_query_var('paged') ? get_query_var('paged') : 1;
$feed_url_for_page = function ($page) use($feed) {
$url = $feed->get_subscribe_url();
if ($page > 0) {
$url .= '?paged=' . $page;
}
return $url;
};
if ($current_page < $wp_query->max_num_pages) {
echo "\n\t" . sprintf('<atom:link rel="next" href="%s" />', $feed_url_for_page($current_page + 1));
}
if ($current_page > 2) {
echo "\n\t" . sprintf('<atom:link rel="prev" href="%s" />', $feed_url_for_page($current_page - 1));
} elseif ($current_page == 2) {
echo "\n\t" . sprintf('<atom:link rel="prev" href="%s" />', $feed_url_for_page(0));
}
echo "\n\t" . sprintf('<atom:link rel="first" href="%s" />', $feed_url_for_page(0));
if ($wp_query->max_num_pages > 1) {
echo "\n\t" . sprintf('<atom:link rel="last" href="%s" />', $feed_url_for_page($wp_query->max_num_pages));
}
if ($podcast->language) {
echo "\n\t" . '<language>' . $podcast->language . '</language>';
}
do_action('podlove_rss2_head', $feed);
}, 9);
$posts_per_page = $feed->limit_items == 0 ? get_option('posts_per_rss') : $feed->limit_items;
if ($posts_per_page == Model\Feed::ITEMS_GLOBAL_LIMIT) {
$posts_per_page = $podcast->limit_items;
}
// now override the option so WP core functions accessing the option get the "correct" value
add_filter('pre_option_posts_per_rss', function ($_) use($posts_per_page) {
return $posts_per_page;
});
$args = array('post_type' => 'podcast', 'post__in' => $feed->post_ids(), 'posts_per_page' => $posts_per_page);
# The theme "getnoticed" globally overrides post_types in pre_get_posts.
# Fix: hook in after the theme and override it again.
# It's not bad practice because I *really* only want episodes in this feed.
add_action('pre_get_posts', function ($query) {
$query->set('post_type', 'podcast');
}, 20);
/**
* In feeds, WordPress ignores the 'posts_per_page' parameter
* and overrides it with the 'posts_per_rss' option. So we need to
* override that option.
*/
add_filter('post_limits', function ($limits) use($feed) {
$page = get_query_var('paged') ? (int) get_query_var('paged') : 1;
$max = $feed->get_post_limit_sql();
$start = $max * ($page - 1);
if ($max > 0) {
return 'LIMIT ' . $start . ', ' . $max;
} else {
return '';
}
});
$args = array_merge($wp_query->query_vars, $args);
query_posts($args);
}
