function amt_add_dublin_core_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_dublin_core_metadata', false)) {
return array();
}
$metadata_arr = array();
$do_auto_dublincore = $options["auto_dublincore"] == "1" ? true : false;
if (!$do_auto_dublincore) {
return $metadata_arr;
}
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_dublin_core', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_dublin_core', $metadata_arr, $post, $options, $attachments, $embedded_media);
return $metadata_arr;
}
if (!is_singular() || is_front_page()) {
// is_front_page() is used for the case in which a static page is used as the front page.
// Dublin Core metadata has a meaning for content only.
return array();
}
// The Dublin Core metadata generator does not support products or product groups.
if (amt_is_product() || amt_is_product_group()) {
return array();
}
// Title
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['dcterms.title'] = '<meta name="dcterms.title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Resource identifier - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta name="dcterms.identifier" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
$metadata_arr[] = '<meta name="dcterms.creator" content="' . esc_attr(amt_get_dublin_core_author_notation($post)) . '" />';
//$metadata_arr[] = '<meta name="dcterms.date" content="' . esc_attr( amt_iso8601_date($post->post_date) ) . '" />';
$metadata_arr[] = '<meta name="dcterms.created" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta name="dcterms.available" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
//$metadata_arr[] = '<meta name="dcterms.issued" content="' . esc_attr( amt_iso8601_date($post->post_date) ) . '" />';
$metadata_arr[] = '<meta name="dcterms.modified" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
// Description
// We use the same description as the ``description`` meta tag.
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="dcterms.description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Keywords
if (!is_attachment()) {
// Attachments do not support keywords
// dcterms.subject - one for each keyword.
$keywords = explode(',', amt_get_content_keywords($post));
foreach ($keywords as $subject) {
$subject = trim($subject);
if (!empty($subject)) {
$metadata_arr[] = '<meta name="dcterms.subject" content="' . esc_attr($subject) . '" />';
}
}
}
$metadata_arr[] = '<meta name="dcterms.language" content="' . esc_attr(amt_get_language_content($options, $post)) . '" />';
$metadata_arr[] = '<meta name="dcterms.publisher" content="' . esc_url_raw(trailingslashit(get_bloginfo('url'))) . '" />';
// Copyright page
$copyright_url = amt_get_site_copyright_url($options);
if (empty($copyright_url)) {
$copyright_url = trailingslashit(get_bloginfo('url'));
}
if (!empty($copyright_url)) {
$metadata_arr[] = '<meta name="dcterms.rights" content="' . esc_url_raw($copyright_url) . '" />';
}
// License
$license_url = '';
// The following requires creative commons configurator
if (function_exists('bccl_get_license_url')) {
$license_url = bccl_get_license_url();
}
// Allow filtering of the license URL
$license_url = apply_filters('amt_dublin_core_license', $license_url, $post->ID);
// Add metatag if $license_url is not empty.
if (!empty($license_url)) {
$metadata_arr[] = '<meta name="dcterms.license" content="' . esc_url_raw($license_url) . '" />';
}
// Coverage
$metadata_arr[] = '<meta name="dcterms.coverage" content="World" />';
if (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
$metadata_arr[] = '<meta name="dcterms.isPartOf" content="' . esc_url_raw(get_permalink($post->post_parent)) . '" />';
if ('image' == $attachment_type) {
$metadata_arr[] = '<meta name="dcterms.type" content="Image" />';
$metadata_arr[] = '<meta name="dcterms.format" content="' . $mime_type . '" />';
} elseif ('video' == $attachment_type) {
$metadata_arr[] = '<meta name="dcterms.type" content="MovingImage" />';
$metadata_arr[] = '<meta name="dcterms.format" content="' . $mime_type . '" />';
} elseif ('audio' == $attachment_type) {
$metadata_arr[] = '<meta name="dcterms.type" content="Sound" />';
$metadata_arr[] = '<meta name="dcterms.format" content="' . $mime_type . '" />';
}
// Finally add the hasFormat
$metadata_arr[] = '<meta name="dcterms.hasFormat" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
} else {
// Default: Text
$metadata_arr[] = '<meta name="dcterms.type" content="Text" />';
$metadata_arr[] = '<meta name="dcterms.format" content="text/html" />';
// Add media files
// Media Limits
$image_limit = amt_metadata_get_image_limit($options);
$video_limit = amt_metadata_get_video_limit($options);
$audio_limit = amt_metadata_get_audio_limit($options);
// Counters
$ic = 0;
// image counter
$vc = 0;
// video counter
$ac = 0;
// audio counter
// List attachments
foreach ($attachments as $attachment) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type && $ic < $image_limit) {
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
// Increase image counter
$ic++;
} elseif ('video' == $attachment_type && $vc < $video_limit) {
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
// Increase video counter
$vc++;
} elseif ('audio' == $attachment_type && $ac < $audio_limit) {
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
// Increase audio counter
$ac++;
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
if ($ic == $image_limit) {
break;
}
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw($embedded_item['page']) . '" />';
// Increase image counter
$ic++;
}
foreach ($embedded_media['videos'] as $embedded_item) {
if ($vc == $video_limit) {
break;
}
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw($embedded_item['page']) . '" />';
// Increase video counter
$vc++;
}
foreach ($embedded_media['sounds'] as $embedded_item) {
if ($ac == $audio_limit) {
break;
}
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw($embedded_item['page']) . '" />';
// Increase audio counter
$ac++;
}
}
/**
* WordPress Post Formats: http://codex.wordpress.org/Post_Formats
* Dublin Core Format: http://dublincore.org/documents/dcmi-terms/#terms-format
* Dublin Core DCMIType: http://dublincore.org/documents/dcmi-type-vocabulary/
*/
/**
* TREAT ALL POST FORMATS AS TEXT (for now)
*/
/**
$format = get_post_format( $post->id );
if ( empty($format) || $format=="aside" || $format=="link" || $format=="quote" || $format=="status" || $format=="chat") {
// Default format
$metadata_arr[] = '<meta name="dcterms.type" content="Text" />';
$metadata_arr[] = '<meta name="dcterms.format" content="text/html" />';
} elseif ($format=="gallery") {
$metadata_arr[] = '<meta name="dcterms.type" content="Collection" />';
// $metadata_arr[] = '<meta name="dcterms.format" content="image" />';
} elseif ($format=="image") {
$metadata_arr[] = '<meta name="dcterms.type" content="Image" />';
// $metadata_arr[] = '<meta name="dcterms.format" content="image/png" />';
} elseif ($format=="video") {
$metadata_arr[] = '<meta name="dcterms.type" content="Moving Image" />';
$metadata_arr[] = '<meta name="dcterms.format" content="application/x-shockwave-flash" />';
} elseif ($format=="audio") {
$metadata_arr[] = '<meta name="dcterms.type" content="Sound" />';
$metadata_arr[] = '<meta name="dcterms.format" content="audio/mpeg" />';
}
*/
// Filtering of the generated Dublin Core metadata
$metadata_arr = apply_filters('amt_dublin_core_metadata_head', $metadata_arr);
return $metadata_arr;
}
function bccl_license_summary($width = "100%", $height = "600px", $css_class= "cc-frame") {
printf('
<iframe src="%s" frameborder="0" width="%s" height="%s" class="%s"></iframe>
', bccl_get_license_url(), $width, $height, $css_class);
}
/**
* Adds the CC URL to the feed items.
*/
function bccl_add_cc_element_feed_item() {
global $post;
$cc_settings = get_option("cc_settings");
// If there is no global license, stop here
if ( empty($cc_settings['license_url']) ) {
return '';
}
// If the addition of data in the feeds has been enabled
if ( $cc_settings["cc_feed"] == "1" ) {
// Get content specific license from the custom field
$bccl_license = get_post_meta( $post->ID, '_bccl_license', true );
if ( empty( $bccl_license ) ) {
// Set to default
$bccl_license = 'default';
}
// DEFAULT LICENSE
// If no custom license has been set for this content
if ( $bccl_license == 'default' ) {
echo "\t<creativeCommons:license>" . bccl_get_license_url() . "</creativeCommons:license>" . PHP_EOL;
}
// CC0
elseif ( $bccl_license == 'cc0' ) {
$license = bccl_get_license( 'cc0' );
echo "\t\t<creativeCommons:license>" . $license['url'] . "</creativeCommons:license>" . PHP_EOL;
}
}
}
