+/**
+ * Display the classes for the post div.
+ *
+ * @since 2.7.0
+ *
+ * @param string|array $class One or more classes to add to the class list.
+ * @param int $post_id An optional post ID.
+ */
+function post_class( $class = '', $post_id = null ) {
+ // Separates classes with a single space, collates classes for post DIV
+ echo 'class="' . join( ' ', get_post_class( $class, $post_id ) ) . '"';
+}
+
+/**
+ * Retrieve the classes for the post div as an array.
+ *
+ * The class names are add are many. If the post is a sticky, then the 'sticky'
+ * class name. The class 'hentry' is always added to each post. For each
+ * category, the class will be added with 'category-' with category slug is
+ * added. The tags are the same way as the categories with 'tag-' before the tag
+ * slug. All classes are passed through the filter, 'post_class' with the list
+ * of classes, followed by $class parameter value, with the post ID as the last
+ * parameter.
+ *
+ * @since 2.7.0
+ *
+ * @param string|array $class One or more classes to add to the class list.
+ * @param int $post_id An optional post ID.
+ * @return array Array of classes.
+ */
+function get_post_class( $class = '', $post_id = null ) {
+ $post = get_post($post_id);
+
+ $classes = array();
+
+ if ( empty($post) )
+ return $classes;
+
+ $classes[] = 'post-' . $post->ID;
+ $classes[] = $post->post_type;
+
+ // sticky for Sticky Posts
+ if ( is_sticky($post->ID) && is_home())
+ $classes[] = 'sticky';
+
+ // hentry for hAtom compliace
+ $classes[] = 'hentry';
+
+ // Categories
+ foreach ( (array) get_the_category($post->ID) as $cat ) {
+ if ( empty($cat->slug ) )
+ continue;
+ $classes[] = 'category-' . sanitize_html_class($cat->slug, $cat->cat_ID);
+ }
+
+ // Tags
+ foreach ( (array) get_the_tags($post->ID) as $tag ) {
+ if ( empty($tag->slug ) )
+ continue;
+ $classes[] = 'tag-' . sanitize_html_class($tag->slug, $tag->term_id);
+ }
+
+ if ( !empty($class) ) {
+ if ( !is_array( $class ) )
+ $class = preg_split('#\s+#', $class);
+ $classes = array_merge($classes, $class);
+ }
+
+ $classes = array_map('esc_attr', $classes);
+
+ return apply_filters('post_class', $classes, $class, $post_id);
+}
+
+/**
+ * Display the classes for the body element.
+ *
+ * @since 2.8.0
+ *
+ * @param string|array $class One or more classes to add to the class list.
+ */
+function body_class( $class = '' ) {
+ // Separates classes with a single space, collates classes for body element
+ echo 'class="' . join( ' ', get_body_class( $class ) ) . '"';
+}
+
+/**
+ * Retrieve the classes for the body element as an array.
+ *
+ * @since 2.8.0
+ *
+ * @param string|array $class One or more classes to add to the class list.
+ * @return array Array of classes.
+ */
+function get_body_class( $class = '' ) {
+ global $wp_query, $wpdb, $current_user;
+
+ $classes = array();
+
+ if ( 'rtl' == get_bloginfo('text_direction') )
+ $classes[] = 'rtl';
+
+ if ( is_front_page() )
+ $classes[] = 'home';
+ if ( is_home() )
+ $classes[] = 'blog';
+ if ( is_archive() )
+ $classes[] = 'archive';
+ if ( is_date() )
+ $classes[] = 'date';
+ if ( is_search() )
+ $classes[] = 'search';
+ if ( is_paged() )
+ $classes[] = 'paged';
+ if ( is_attachment() )
+ $classes[] = 'attachment';
+ if ( is_404() )
+ $classes[] = 'error404';
+
+ if ( is_single() ) {
+ $wp_query->post = $wp_query->posts[0];
+ setup_postdata($wp_query->post);
+
+ $postID = $wp_query->post->ID;
+ $classes[] = 'single postid-' . $postID;
+
+ if ( is_attachment() ) {
+ $mime_type = get_post_mime_type();
+ $mime_prefix = array( 'application/', 'image/', 'text/', 'audio/', 'video/', 'music/' );
+ $classes[] = 'attachmentid-' . $postID;
+ $classes[] = 'attachment-' . str_replace($mime_prefix, '', $mime_type);
+ }
+ } elseif ( is_archive() ) {
+ if ( is_author() ) {
+ $author = $wp_query->get_queried_object();
+ $classes[] = 'author';
+ $classes[] = 'author-' . sanitize_html_class($author->user_nicename , $author->ID);
+ } elseif ( is_category() ) {
+ $cat = $wp_query->get_queried_object();
+ $classes[] = 'category';
+ $classes[] = 'category-' . sanitize_html_class($cat->slug, $cat->cat_ID);
+ } elseif ( is_tag() ) {
+ $tags = $wp_query->get_queried_object();
+ $classes[] = 'tag';
+ $classes[] = 'tag-' . sanitize_html_class($tags->slug, $tags->term_id);
+ }
+ } elseif ( is_page() ) {
+ $classes[] = 'page';
+
+ $wp_query->post = $wp_query->posts[0];
+ setup_postdata($wp_query->post);
+
+ $pageID = $wp_query->post->ID;
+
+ $classes[] = 'page-id-' . $pageID;
+
+ if ( $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'page' LIMIT 1", $pageID) ) )
+ $classes[] = 'page-parent';
+
+ if ( $wp_query->post->post_parent ) {
+ $classes[] = 'page-child';
+ $classes[] = 'parent-pageid-' . $wp_query->post->post_parent;
+ }
+ if ( is_page_template() ) {
+ $classes[] = 'page-template';
+ $classes[] = 'page-template-' . str_replace( '.php', '-php', get_post_meta( $pageID, '_wp_page_template', true ) );
+ }
+ } elseif ( is_search() ) {
+ if ( !empty($wp_query->posts) )
+ $classes[] = 'search-results';
+ else
+ $classes[] = 'search-no-results';
+ }
+
+ if ( is_user_logged_in() )
+ $classes[] = 'logged-in';
+
+ $page = $wp_query->get('page');
+
+ if ( !$page || $page < 2)
+ $page = $wp_query->get('paged');
+
+ if ( $page && $page > 1 ) {
+ $classes[] = 'paged-' . $page;
+
+ if ( is_single() )
+ $classes[] = 'single-paged-' . $page;
+ elseif ( is_page() )
+ $classes[] = 'page-paged-' . $page;
+ elseif ( is_category() )
+ $classes[] = 'category-paged-' . $page;
+ elseif ( is_tag() )
+ $classes[] = 'tag-paged-' . $page;
+ elseif ( is_date() )
+ $classes[] = 'date-paged-' . $page;
+ elseif ( is_author() )
+ $classes[] = 'author-paged-' . $page;
+ elseif ( is_search() )
+ $classes[] = 'search-paged-' . $page;
+ }
+
+ if ( !empty($class) ) {
+ if ( !is_array( $class ) )
+ $class = preg_split('#\s+#', $class);
+ $classes = array_merge($classes, $class);
+ }
+
+ $classes = array_map('esc_attr', $classes);
+
+ return apply_filters('body_class', $classes, $class);
+}
+
+/**
+ * Whether post requires password and correct password has been provided.
+ *
+ * @since 2.7.0
+ *
+ * @param int|object $post An optional post. Global $post used if not provided.
+ * @return bool false if a password is not required or the correct password cookie is present, true otherwise.
+ */
+function post_password_required( $post = null ) {
+ $post = get_post($post);
+
+ if ( empty($post->post_password) )
+ return false;
+
+ if ( !isset($_COOKIE['wp-postpass_' . COOKIEHASH]) )
+ return true;
+
+ if ( $_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password )
+ return true;
+
+ return false;
+}
+
+/**
+ * Display "sticky" CSS class, if a post is sticky.
+ *
+ * @since 2.7.0
+ *
+ * @param int $post_id An optional post ID.
+ */
+function sticky_class( $post_id = null ) {
+ if ( !is_sticky($post_id) )
+ return;
+
+ echo " sticky";
+}
+
+/**
+ * Page Template Functions for usage in Themes
+ *
+ * @package WordPress
+ * @subpackage Template
+ */
+
+/**
+ * The formatted output of a list of pages.
+ *
+ * Displays page links for paginated posts (i.e. includes the <!--nextpage-->.
+ * Quicktag one or more times). This tag must be within The Loop.
+ *
+ * The defaults for overwriting are:
+ * 'next_or_number' - Default is 'number' (string). Indicates whether page
+ * numbers should be used. Valid values are number and next.
+ * 'nextpagelink' - Default is 'Next Page' (string). Text for link to next page.
+ * of the bookmark.
+ * 'previouspagelink' - Default is 'Previous Page' (string). Text for link to
+ * previous page, if available.
+ * 'pagelink' - Default is '%' (String).Format string for page numbers. The % in
+ * the parameter string will be replaced with the page number, so Page %
+ * generates "Page 1", "Page 2", etc. Defaults to %, just the page number.
+ * 'before' - Default is '<p> Pages:' (string). The html or text to prepend to
+ * each bookmarks.
+ * 'after' - Default is '</p>' (string). The html or text to append to each
+ * bookmarks.
+ * 'link_before' - Default is '' (string). The html or text to prepend to each
+ * Pages link inside the <a> tag.
+ * 'link_after' - Default is '' (string). The html or text to append to each
+ * Pages link inside the <a> tag.
+ *
+ * @since 1.2.0
+ * @access private
+ *
+ * @param string|array $args Optional. Overwrite the defaults.
+ * @return string Formatted output in HTML.
+ */