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<?php
/**
* Custom functions that act independently of the theme templates
*
* Eventually, some of the functionality here could be replaced by core features
*
* @package Spun
*/
/**
* Get our wp_nav_menu() fallback, wp_page_menu(), to show a home link.
*
*/
function spun_page_menu_args( $args ) {
$args['show_home'] = true;
return $args;
}
add_filter( 'wp_page_menu_args', 'spun_page_menu_args' );
/**
* Adds custom classes to the array of body classes.
*
*/
function spun_body_classes( $classes ) {
// Adds a class of group-blog to blogs with more than 1 published author
if ( is_multi_author() ) {
$classes[] = 'group-blog';
}
return $classes;
}
add_filter( 'body_class', 'spun_body_classes' );
/**
* Filter in a link to a content ID attribute for the next/previous image links on image attachment pages
*
*/
function spun_enhanced_image_navigation( $url, $id ) {
if ( ! is_attachment() && ! wp_attachment_is_image( $id ) )
return $url;
$image = get_post( $id );
if ( ! empty( $image->post_parent ) && $image->post_parent != $id )
$url .= '#main';
return $url;
}
add_filter( 'attachment_link', 'spun_enhanced_image_navigation', 10, 2 );
/**
* Remove widget title header if no title is entered.
* @todo Remove this function when this is fixed in core.
*/
function spun_calendar_widget_title( $title = '', $instance = '', $id_base = '' ) {
if ( 'calendar' == $id_base && ' ' == $title )
$title = '';
return $title;
}
add_filter( 'widget_title', 'spun_calendar_widget_title', 10, 3 );
/**
* Filter archives to display one less post per page to account for the .page-title circle
*/
function spun_limit_posts_per_archive_page() {
if ( ! is_home() && is_archive() || is_search() ) {
$posts_per_page = intval( get_option( 'posts_per_page' ) ) - 1;
set_query_var( 'posts_per_page', $posts_per_page );
}
}
add_filter( 'pre_get_posts', 'spun_limit_posts_per_archive_page' );
/**
* Count the number of active sidebars and generate an ID to style them.
*/
function spun_count_sidebars() {
$count = 0;
if ( is_active_sidebar( 'sidebar-1' ) || is_active_sidebar( 'sidebar-2' ) || is_active_sidebar( 'sidebar-3' ) )
$count = 'one';
if ( is_active_sidebar( 'sidebar-1' ) && is_active_sidebar( 'sidebar-2' ) ||
is_active_sidebar( 'sidebar-1' ) && is_active_sidebar( 'sidebar-3' ) ||
is_active_sidebar( 'sidebar-2' ) && is_active_sidebar( 'sidebar-3' ) )
$count = 'two';
if ( is_active_sidebar( 'sidebar-1' ) && is_active_sidebar( 'sidebar-2' ) && is_active_sidebar( 'sidebar-3' ) )
$count = 'three';
print $count;
}
/**
* For image post format, as we display the featured image properly,
* regex it out of the content.
*/
function spun_strip_featured_image( $content ) {
if ( '' != get_the_post_thumbnail() && 'image' == get_post_format() ) {
$image_url = wp_get_attachment_image_src( get_post_thumbnail_id(), 'full' );
$image_url = $image_url[0];
$image_url = str_replace( array( 'http://', 'https://' ), 'https?://', $image_url );
$regex = sprintf( '#<a href="%1$s"><img[^>]*? src="%1$s[^"]*" [^>]*?/></a>#', $image_url );
$content = preg_replace( $regex, '', $content );
}
return $content;
}
add_filter( 'the_content', 'spun_strip_featured_image' );
/**
* Regex gallery shortcode from gallery post format content.
*/
function spun_strip_gallery( $content ) {
if ( 'gallery' == get_post_format() ) {
$regex = '/\[gallery.*]/';
$content = preg_replace( $regex, '', $content );
}
return $content;
}
add_filter( 'the_content', 'spun_strip_gallery' );
/**
* Extract gallery shortcode from content
*/
function spun_gallery_shortcode( $content ) {
$regex = '/\[gallery.*]/';
$shortcode = preg_match( $regex, $content, $gallery_shortcode );
return $gallery_shortcode;
}
/**
* Filters wp_title to print a neat <title> tag based on what is being viewed.
*
* @param string $title Default title text for current view.
* @param string $sep Optional separator.
* @return string The filtered title.
*/
function spun_wp_title( $title, $sep ) {
global $page, $paged;
if ( is_feed() )
return $title;
// Add the blog name
$title .= get_bloginfo( 'name' );
// Add the blog description for the home/front page.
$site_description = get_bloginfo( 'description', 'display' );
if ( $site_description && ( is_home() || is_front_page() ) )
$title .= " $sep $site_description";
// Add a page number if necessary:
if ( $paged >= 2 || $page >= 2 )
$title .= " $sep " . sprintf( __( 'Page %s', 'spun' ), max( $paged, $page ) );
return $title;
}
add_filter( 'wp_title', 'spun_wp_title', 10, 2 );