post_type, 'post-formats' ) )
return false;
$_format = get_the_terms( $post->ID, 'post_format' );
if ( empty( $_format ) )
return false;
$format = array_shift( $_format );
return ( str_replace('post-format-', '', $format->slug ) );
}
/**
* Check if a post has a particular format
*
* @since 3.1.0
*
* @uses has_term()
*
* @param string $format The format to check for.
* @param object|int $post The post to check. If not supplied, defaults to the current post if used in the loop.
* @return bool True if the post has the format, false otherwise.
*/
function has_post_format( $format, $post = null ) {
return has_term('post-format-' . sanitize_key($format), 'post_format', $post);
}
/**
* Assign a format to a post
*
* @since 3.1.0
*
* @param int|object $post The post for which to assign a format.
* @param string $format A format to assign. Use an empty string or array to remove all formats from the post.
* @return mixed WP_Error on error. Array of affected term IDs on success.
*/
function set_post_format( $post, $format ) {
$post = get_post($post);
if ( empty($post) )
return new WP_Error('invalid_post', __('Invalid post'));
if ( !empty($format) ) {
$format = sanitize_key($format);
if ( 'standard' == $format || !in_array( $format, array_keys( get_post_format_slugs() ) ) )
$format = '';
else
$format = 'post-format-' . $format;
}
return wp_set_post_terms($post->ID, $format, 'post_format');
}
/**
* Retrieve post format metadata for a post
*
* @since 3.6.0
*
* @param int $post_id (optional) The post ID.
* @return array The array of post format metadata.
*/
function get_post_format_meta( $post_id = 0 ) {
$values = array(
'quote' => '',
'quote_source' => '',
'url' => '',
'image' => '',
'gallery' => '',
'audio' => '',
'video' => '',
);
foreach ( $values as $key => $value )
$values[$key] = get_post_meta( $post_id, '_wp_format_' . $key, true );
return $values;
}
/**
* Returns an array of post format slugs to their translated and pretty display versions
*
* @since 3.1.0
*
* @return array The array of translated post format names.
*/
function get_post_format_strings() {
$strings = array(
'standard' => _x( 'Standard', 'Post format' ), // Special case. any value that evals to false will be considered standard
'aside' => _x( 'Aside', 'Post format' ),
'chat' => _x( 'Chat', 'Post format' ),
'gallery' => _x( 'Gallery', 'Post format' ),
'link' => _x( 'Link', 'Post format' ),
'image' => _x( 'Image', 'Post format' ),
'quote' => _x( 'Quote', 'Post format' ),
'status' => _x( 'Status', 'Post format' ),
'video' => _x( 'Video', 'Post format' ),
'audio' => _x( 'Audio', 'Post format' ),
);
return $strings;
}
/**
* Retrieves an array of post format slugs.
*
* @since 3.1.0
*
* @uses get_post_format_strings()
*
* @return array The array of post format slugs.
*/
function get_post_format_slugs() {
$slugs = array_keys( get_post_format_strings() );
return array_combine( $slugs, $slugs );
}
/**
* Returns a pretty, translated version of a post format slug
*
* @since 3.1.0
*
* @uses get_post_format_strings()
*
* @param string $slug A post format slug.
* @return string The translated post format name.
*/
function get_post_format_string( $slug ) {
$strings = get_post_format_strings();
if ( !$slug )
return $strings['standard'];
else
return ( isset( $strings[$slug] ) ) ? $strings[$slug] : '';
}
/**
* Returns a link to a post format index.
*
* @since 3.1.0
*
* @param string $format The post format slug.
* @return string The post format term link.
*/
function get_post_format_link( $format ) {
$term = get_term_by('slug', 'post-format-' . $format, 'post_format' );
if ( ! $term || is_wp_error( $term ) )
return false;
return get_term_link( $term );
}
/**
* Filters the request to allow for the format prefix.
*
* @access private
* @since 3.1.0
*/
function _post_format_request( $qvs ) {
if ( ! isset( $qvs['post_format'] ) )
return $qvs;
$slugs = get_post_format_slugs();
if ( isset( $slugs[ $qvs['post_format'] ] ) )
$qvs['post_format'] = 'post-format-' . $slugs[ $qvs['post_format'] ];
$tax = get_taxonomy( 'post_format' );
if ( ! is_admin() )
$qvs['post_type'] = $tax->object_type;
return $qvs;
}
add_filter( 'request', '_post_format_request' );
/**
* Filters the post format term link to remove the format prefix.
*
* @access private
* @since 3.1.0
*/
function _post_format_link( $link, $term, $taxonomy ) {
global $wp_rewrite;
if ( 'post_format' != $taxonomy )
return $link;
if ( $wp_rewrite->get_extra_permastruct( $taxonomy ) ) {
return str_replace( "/{$term->slug}", '/' . str_replace( 'post-format-', '', $term->slug ), $link );
} else {
$link = remove_query_arg( 'post_format', $link );
return add_query_arg( 'post_format', str_replace( 'post-format-', '', $term->slug ), $link );
}
}
add_filter( 'term_link', '_post_format_link', 10, 3 );
/**
* Remove the post format prefix from the name property of the term object created by get_term().
*
* @access private
* @since 3.1.0
*/
function _post_format_get_term( $term ) {
if ( isset( $term->slug ) ) {
$term->name = get_post_format_string( str_replace( 'post-format-', '', $term->slug ) );
}
return $term;
}
add_filter( 'get_post_format', '_post_format_get_term' );
/**
* Remove the post format prefix from the name property of the term objects created by get_terms().
*
* @access private
* @since 3.1.0
*/
function _post_format_get_terms( $terms, $taxonomies, $args ) {
if ( in_array( 'post_format', (array) $taxonomies ) ) {
if ( isset( $args['fields'] ) && 'names' == $args['fields'] ) {
foreach( $terms as $order => $name ) {
$terms[$order] = get_post_format_string( str_replace( 'post-format-', '', $name ) );
}
} else {
foreach ( (array) $terms as $order => $term ) {
if ( isset( $term->taxonomy ) && 'post_format' == $term->taxonomy ) {
$terms[$order]->name = get_post_format_string( str_replace( 'post-format-', '', $term->slug ) );
}
}
}
}
return $terms;
}
add_filter( 'get_terms', '_post_format_get_terms', 10, 3 );
/**
* Remove the post format prefix from the name property of the term objects created by wp_get_object_terms().
*
* @access private
* @since 3.1.0
*/
function _post_format_wp_get_object_terms( $terms ) {
foreach ( (array) $terms as $order => $term ) {
if ( isset( $term->taxonomy ) && 'post_format' == $term->taxonomy ) {
$terms[$order]->name = get_post_format_string( str_replace( 'post-format-', '', $term->slug ) );
}
}
return $terms;
}
add_filter( 'wp_get_object_terms', '_post_format_wp_get_object_terms' );
/**
* Return the class for a post format content wrapper
*
* @since 3.6.0
*
* @param string $format The post format slug, such as status, quote, image, gallery, etc.
* @return string Filtered post format content class.
*/
function get_post_format_content_class( $format ) {
return apply_filters( 'post_format_content_class', 'post-format-content', $format );
}
/**
* Output the class for a post format content wrapper
*
* @since 3.6.0
*
* @param string $format The post format slug, such as status, quote, image, gallery, etc.
*/
function post_format_content_class( $format ) {
echo get_post_format_content_class( $format );
}
/**
* Provide fallback behavior for Posts that have associated post format
*
* @since 3.6.0
*
* @uses get_post_format_meta()
*
* @param string $content The post content.
* @param int $id (optional) The post ID.
* @return string Formatted output based on associated post format.
*/
function post_formats_compat( $content, $id = 0 ) {
$post = empty( $id ) ? get_post() : get_post( $id );
if ( empty( $post ) )
return $content;
$format = get_post_format( $post );
if ( empty( $format ) || in_array( $format, array( 'status', 'aside', 'chat', 'gallery' ) ) )
return $content;
if ( current_theme_supports( 'structured-post-formats', $format ) )
return $content;
$defaults = array(
'position' => 'after',
'tag' => 'div',
'class' => get_post_format_content_class( $format ),
'link_class' => '',
);
$args = apply_filters( 'post_format_compat', array() );
$compat = wp_parse_args( $args, $defaults );
$show_content = true;
$format_output = '';
$meta = get_post_format_meta( $post->ID );
switch ( $format ) {
case 'link':
$compat['tag'] = '';
$compat['position'] = 'before';
if ( ! empty( $meta['url'] ) ) {
$esc_url = preg_quote( $meta['url'], '#' );
// Make sure the same URL isn't in the post (modified/extended versions allowed)
if ( ! preg_match( '#' . $esc_url . '[^/&\?]?#', $content ) ) {
$url = $meta['url'];
} else {
$url = get_content_url( $content, true );
}
} else {
$content_before = $content;
$url = get_content_url( $content, true );
if ( $content_before == $content )
$url = '';
}
if ( ! empty( $url ) ) {
$format_output .= sprintf(
'%s',
empty( $compat['link_class'] ) ? '' : sprintf( 'class="%s" ', esc_attr( $compat['link_class'] ) ),
esc_url( $url ),
empty( $post->post_title ) ? esc_url( $meta['url'] ) : apply_filters( 'the_title', $post->post_title, $post->ID )
);
}
break;
case 'image':
if ( ! empty( $meta['image'] ) ) {
$image = is_numeric( $meta['image'] ) ? wp_get_attachment_url( $meta['image'] ) : $meta['image'];
if ( ! empty( $image ) && ! stristr( $content, $image ) ) {
$image_html = sprintf(
'![]()
',
empty( $compat['image_class'] ) ? '' : sprintf( 'class="%s" ', esc_attr( $compat['image_class'] ) ),
$image
);
if ( empty( $meta['url'] ) ) {
$format_output .= $image_html;
} else {
$format_output .= sprintf(
'%s',
esc_url( $meta['url'] ),
$image_html
);
}
}
}
break;
case 'quote':
if ( ! empty( $meta['quote'] ) && ! stristr( $content, $meta['quote'] ) ) {
$quote = sprintf( '%s
', wpautop( $meta['quote'] ) );
if ( ! empty( $meta['quote_source'] ) ) {
$source = ( empty( $meta['url'] ) ) ? $meta['quote_source'] : sprintf( '%s', esc_url( $meta['url'] ), $meta['quote_source'] );
$quote .= sprintf( '%s', $source );
}
$format_output .= sprintf( '%s', $quote );
}
break;
case 'video':
case 'audio':
if ( ! has_shortcode( $post->post_content, $format ) && ! empty( $meta[$format] ) ) {
// the metadata is an attachment ID
if ( is_numeric( $meta[$format] ) ) {
$url = wp_get_attachment_url( $meta[$format] );
$format_output .= sprintf( '[%s src="%s"]', $format, $url );
// the metadata is a shortcode or an embed code
} elseif ( preg_match( '/' . get_shortcode_regex() . '/s', $meta[$format] ) || preg_match( '#<[^>]+>#', $meta[$format] ) ) {
$format_output .= $meta[$format];
} elseif ( ! stristr( $content, $meta[$format] ) ) {
// attempt to embed the URL
$format_output .= sprintf( '[embed]%s[/embed]', $meta[$format] );
}
}
break;
default:
return $content;
break;
}
if ( empty( $format_output ) )
return $content;
$output = '';
if ( ! empty( $content ) && $show_content && 'before' !== $compat['position'] )
$output .= $content . "\n\n";
if ( ! empty( $compat['tag'] ) )
$output .= sprintf( '<%s class="%s">', tag_escape( $compat['tag'] ), esc_attr( $compat['class'] ) );
$output .= "\n\n" . $format_output;
if ( ! empty( $compat['tag'] ) )
$output .= sprintf( '', tag_escape( $compat['tag'] ) );
if ( ! empty( $content ) && $show_content && 'before' === $compat['position'] )
$output .= "\n\n" . $content;
return $output;
}
/**
* Add chat detection support to the `get_content_chat()` chat parser.
*
* @since 3.6.0
*
* @global array $_wp_chat_parsers
*
* @param string $name Unique identifier for chat format. Example: IRC
* @param string $newline_regex RegEx to match the start of a new line, typically when a new "username:" appears
* The parser will handle up to 3 matched expressions
* $matches[0] = the string before the user's message starts
* $matches[1] = the time of the message, if present
* $matches[2] = the author/username
* OR
* $matches[0] = the string before the user's message starts
* $matches[1] = the author/username
* @param string $delimiter_regex RegEx to determine where to split the username syntax from the chat message
*/
function add_chat_detection_format( $name, $newline_regex, $delimiter_regex ) {
global $_wp_chat_parsers;
if ( empty( $_wp_chat_parsers ) )
$_wp_chat_parsers = array();
$_wp_chat_parsers = array( $name => array( $newline_regex, $delimiter_regex ) ) + $_wp_chat_parsers;
}
add_chat_detection_format( 'IM', '#^([^:]+):#', '#[:]#' );
add_chat_detection_format( 'Skype', '#(\[.+?\])\s([^:]+):#', '#[:]#' );
/**
* Deliberately interpret passed content as a chat transcript that is optionally
* followed by commentary
*
* If the content does not contain username syntax, assume that it does not contain
* chat logs and return
*
* Example:
*
* One stanza of chat:
* Scott: Hey, let's chat!
* Helen: No.
*
* $stanzas = array(
* array(
* array(
* 'time' => '',
* 'author' => 'Scott',
* 'messsage' => "Hey, let's chat!"
* ),
* array(
* 'time' => '',
* 'author' => 'Helen',
* 'message' => 'No.'
* )
* )
* )
*
* @since 3.6.0
*
* @param string $content A string which might contain chat data, passed by reference.
* @param boolean $remove Whether to remove the found data from the passed content.
* @return array A chat log as structured data
*/
function get_content_chat( &$content, $remove = false ) {
global $_wp_chat_parsers;
$trimmed = strip_tags( trim( $content ) );
if ( empty( $trimmed ) )
return array();
$matched_parser = false;
foreach ( $_wp_chat_parsers as $parser ) {
@list( $newline_regex, $delimiter_regex ) = $parser;
if ( preg_match( $newline_regex, $trimmed ) ) {
$matched_parser = $parser;
break;
}
}
if ( false === $matched_parser )
return array();
$last_index = 0;
$stanzas = $data = $stanza = array();
$author = $time = '';
$lines = explode( "\n", make_clickable( $trimmed ) );
$found = false;
$found_index = 0;
foreach ( $lines as $index => $line ) {
if ( ! $found )
$found_index = $index;
$line = trim( $line );
if ( empty( $line ) && $found ) {
if ( ! empty( $author ) ) {
$stanza[] = array(
'time' => $time,
'author' => $author,
'message' => join( ' ', $data )
);
}
$stanzas[] = $stanza;
$stanza = $data = array();
$author = $time = '';
if ( ! empty( $lines[$index + 1] ) && ! preg_match( $delimiter_regex, $lines[$index + 1] ) )
break;
else
continue;
}
$matches = array();
$matched = preg_match( $newline_regex, $line, $matches );
if ( ! $matched )
continue;
$found = true;
$last_index = $index;
$author_match = empty( $matches[2] ) ? $matches[1] : $matches[2];
// assume username syntax if no whitespace is present
$no_ws = $matched && ! preg_match( '#[\r\n\t ]#', $author_match );
// allow script-like stanzas
$has_ws = $matched && preg_match( '#[\r\n\t ]#', $author_match ) && empty( $lines[$index + 1] ) && empty( $lines[$index - 1] );
if ( $matched && ( ! empty( $matches[2] ) || ( $no_ws || $has_ws ) ) ) {
if ( ! empty( $author ) ) {
$stanza[] = array(
'time' => $time,
'author' => $author,
'message' => join( ' ', $data )
);
$data = array();
}
$time = empty( $matches[2] ) ? '' : $matches[1];
$author = $author_match;
$data[] = trim( str_replace( $matches[0], '', $line ) );
} elseif ( preg_match( '#\S#', $line ) ) {
$data[] = $line;
}
}
if ( ! empty( $author ) ) {
$stanza[] = array(
'time' => $time,
'author' => $author,
'message' => trim( join( ' ', $data ) )
);
}
if ( ! empty( $stanza ) )
$stanzas[] = $stanza;
if ( $remove ) {
if ( 0 === $found_index ) {
$removed = array_slice( $lines, $last_index );
} else {
$before = array_slice( $lines, 0, $found_index );
$after = array_slice( $lines, $last_index + 1 );
$removed = array_filter( array_merge( $before, $after ) );
}
$content = trim( join( "\n", $removed ) );
}
return $stanzas;
}
/**
* Retrieve structured chat data from the current or passed post
*
* @since 3.6.0
*
* @param int $id (optional) The post ID.
* @return array The chat content.
*/
function get_the_post_format_chat( $id = 0 ) {
$post = empty( $id ) ? clone get_post() : get_post( $id );
if ( empty( $post ) )
return array();
$data = get_content_chat( get_paged_content( $post->post_content ) );
if ( empty( $data ) )
return array();
return $data;
}
/**
* Output HTML for a given chat's structured data. Themes can use this as a
* template tag in place of the_content() for Chat post format templates.
*
* @since 3.6.0
*
* @uses get_the_post_format_chat()
*
* @print HTML
*/
function the_post_format_chat() {
$output = '';
$stanzas = get_the_post_format_chat();
foreach ( $stanzas as $stanza ) {
foreach ( $stanza as $row ) {
$time = '';
if ( ! empty( $row['time'] ) )
$time = sprintf( '', esc_html( $row['time'] ) );
$output .= sprintf(
'- %2$s %3$s:
- %4$s
',
esc_attr( sanitize_title_with_dashes( $row['author'] ) ), // Slug.
$time,
esc_html( $row['author'] ),
$row['message']
);
}
}
$output .= '
';
echo $output;
}
/**
* Extract a URL from passed content, if possible
* Checks for a URL on the first line of the content or the first encountered href attribute.
*
* @since 3.6.0
*
* @param string $content A string which might contain a URL, passed by reference.
* @param boolean $remove Whether to remove the found URL from the passed content.
* @return string The found URL.
*/
function get_content_url( &$content, $remove = false ) {
if ( empty( $content ) )
return '';
$matches = array();
// the content is a URL
$trimmed = trim( $content );
if ( 0 === stripos( $trimmed, 'http' ) && ! preg_match( '#\s#', $trimmed ) ) {
if ( $remove )
$content = '';
return $trimmed;
// the content is HTML so we grab the first href
} elseif ( preg_match( '/]*?href=[\'"](.+?)[\'"]/is', $content, $matches ) ) {
return esc_url_raw( $matches[1] );
}
$lines = explode( "\n", $trimmed );
$line = trim( array_shift( $lines ) );
// the content is a URL followed by content
if ( 0 === stripos( $line, 'http' ) ) {
if ( $remove )
$content = trim( join( "\n", $lines ) );
return esc_url_raw( $line );
}
return '';
}
/**
* Attempt to retrieve a URL from a post's content
*
* @since 3.6.0
*
* @param int $id (optional) The post ID.
* @return string A URL, if found.
*/
function get_the_post_format_url( $id = 0 ) {
$post = empty( $id ) ? get_post() : get_post( $id );
if ( empty( $post ) )
return '';
if ( in_array( get_post_format( $post->ID ), array( 'image', 'link', 'quote' ) ) ) {
$meta = get_post_format_meta( $post->ID );
if ( ! empty( $meta['url'] ) )
return apply_filters( 'get_the_post_format_url', esc_url_raw( $meta['url'] ), $post );
}
if ( ! empty( $post->post_content ) )
return apply_filters( 'get_the_post_format_url', get_content_url( $post->post_content ), $post );
}
/**
* Attempt to output a URL from a post's content
*
* @since 3.6.0
*.
*/
function the_post_format_url() {
echo esc_url( get_the_post_format_url() );
}
/**
* Retrieve the post content, minus the extracted post format content
*
* @since 3.6.0
*
* @internal there is a lot of code that could be abstracted from get_the_content()
*
* @param string $more_link_text Optional. Content for when there is more text.
* @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false.
* @return string The content minus the extracted post format content.
*/
function get_the_remaining_content( $more_link_text = null, $strip_teaser = false ) {
global $more, $page, $format_pages, $multipage, $preview;
$post = get_post();
if ( null === $more_link_text )
$more_link_text = __( '(more...)' );
$output = '';
$has_teaser = false;
$matches = array();
// If post password required and it doesn't match the cookie.
if ( post_password_required() )
return get_the_password_form();
if ( $page > count( $format_pages ) ) // if the requested page doesn't exist
$page = count( $format_pages ); // give them the highest numbered page that DOES exist
$content = $format_pages[$page-1];
if ( preg_match( '//', $content, $matches ) ) {
$content = explode( $matches[0], $content, 2 );
if ( ! empty( $matches[1] ) && ! empty( $more_link_text ) )
$more_link_text = strip_tags( wp_kses_no_null( trim( $matches[1] ) ) );
$has_teaser = true;
} else {
$content = array( $content );
}
if ( false !== strpos( $post->post_content, '' ) && ( ! $multipage || $page == 1 ) )
$strip_teaser = true;
$teaser = $content[0];
if ( $more && $strip_teaser && $has_teaser )
$teaser = '';
$output .= $teaser;
if ( count( $content ) > 1 ) {
if ( $more ) {
$output .= '' . $content[1];
} else {
if ( ! empty( $more_link_text ) )
$output .= apply_filters( 'the_content_more_link', ' ID}\" class=\"more-link\">$more_link_text", $more_link_text );
$output = force_balance_tags( $output );
}
}
if ( $preview ) // preview fix for javascript bug with foreign languages
$output = preg_replace_callback( '/\%u([0-9A-F]{4})/', '_convert_urlencoded_to_entities', $output );
return $output;
}
/**
* Display the post content minus the parsed post format data.
*
* @since 3.6.0
*
* @param string $more_link_text Optional. Content for when there is more text.
* @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false.
*/
function the_remaining_content( $more_link_text = null, $strip_teaser = false ) {
$extra = get_the_remaining_content( $more_link_text, $strip_teaser );
remove_filter( 'the_content', 'post_formats_compat', 7 );
$content = apply_filters( 'the_content', $extra );
add_filter( 'the_content', 'post_formats_compat', 7 );
echo str_replace( ']]>', ']]>', $content );
}