254 lines
7.5 KiB
PHP
254 lines
7.5 KiB
PHP
<?php
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/**
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* Custom functions that act independently of the theme templates
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*
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* Eventually, some of the functionality here could be replaced by core features.
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*
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* @package Understrap
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*/
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// Exit if accessed directly.
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defined( 'ABSPATH' ) || exit;
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add_filter( 'body_class', 'understrap_body_classes' );
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if ( ! function_exists( 'understrap_body_classes' ) ) {
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/**
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* Adds custom classes to the array of body classes.
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*
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* @param array $classes Classes for the body element.
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*
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* @return array
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*/
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function understrap_body_classes( $classes ) {
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// Adds a class of group-blog to blogs with more than 1 published author.
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if ( is_multi_author() ) {
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$classes[] = 'group-blog';
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}
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// Adds a class of hfeed to non-singular pages.
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if ( ! is_singular() ) {
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$classes[] = 'hfeed';
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}
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// Adds a body class based on the presence of a sidebar.
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$sidebar_pos = get_theme_mod( 'understrap_sidebar_position' );
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if ( is_page_template(
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array(
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'page-templates/fullwidthpage.php',
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'page-templates/no-title.php',
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)
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) ) {
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$classes[] = 'understrap-no-sidebar';
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} elseif (
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is_page_template(
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array(
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'page-templates/both-sidebarspage.php',
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'page-templates/left-sidebarpage.php',
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'page-templates/right-sidebarpage.php',
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)
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)
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) {
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$classes[] = 'understrap-has-sidebar';
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} elseif ( 'none' !== $sidebar_pos ) {
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$classes[] = 'understrap-has-sidebar';
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} else {
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$classes[] = 'understrap-no-sidebar';
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}
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return $classes;
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}
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}
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if ( function_exists( 'understrap_adjust_body_class' ) ) {
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/*
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* understrap_adjust_body_class() deprecated in v0.9.4. We keep adding the
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* filter for child themes which use their own understrap_adjust_body_class.
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*/
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add_filter( 'body_class', 'understrap_adjust_body_class' );
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}
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// Filter custom logo with correct classes.
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add_filter( 'get_custom_logo', 'understrap_change_logo_class' );
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if ( ! function_exists( 'understrap_change_logo_class' ) ) {
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/**
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* Replaces logo CSS class.
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*
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* @param string $html Markup.
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*
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* @return string
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*/
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function understrap_change_logo_class( $html ) {
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$html = str_replace( 'class="custom-logo"', 'class="img-fluid"', $html );
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$html = str_replace( 'class="custom-logo-link"', 'class="navbar-brand custom-logo-link"', $html );
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$html = str_replace( 'alt=""', 'title="Home" alt="logo"', $html );
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return $html;
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}
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}
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if ( ! function_exists( 'understrap_pingback' ) ) {
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/**
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* Add a pingback url auto-discovery header for single posts of any post type.
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*/
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function understrap_pingback() {
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if ( is_singular() && pings_open() ) {
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echo '<link rel="pingback" href="' . esc_url( get_bloginfo( 'pingback_url' ) ) . '">' . "\n";
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}
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}
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}
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add_action( 'wp_head', 'understrap_pingback' );
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if ( ! function_exists( 'understrap_mobile_web_app_meta' ) ) {
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/**
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* Add mobile-web-app meta.
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*/
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function understrap_mobile_web_app_meta() {
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echo '<meta name="mobile-web-app-capable" content="yes">' . "\n";
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echo '<meta name="apple-mobile-web-app-capable" content="yes">' . "\n";
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echo '<meta name="apple-mobile-web-app-title" content="' . esc_attr( get_bloginfo( 'name' ) ) . ' - ' . esc_attr( get_bloginfo( 'description' ) ) . '">' . "\n";
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}
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}
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add_action( 'wp_head', 'understrap_mobile_web_app_meta' );
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if ( ! function_exists( 'understrap_default_body_attributes' ) ) {
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/**
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* Adds schema markup to the body element.
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*
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* @param array<string,string> $atts An associative array of attributes.
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* @return array<string,string>
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*/
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function understrap_default_body_attributes( $atts ) {
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$atts['itemscope'] = '';
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$atts['itemtype'] = 'http://schema.org/WebSite';
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return $atts;
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}
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}
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add_filter( 'understrap_body_attributes', 'understrap_default_body_attributes' );
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// Escapes all occurrences of 'the_archive_description'.
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add_filter( 'get_the_archive_description', 'understrap_escape_the_archive_description' );
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if ( ! function_exists( 'understrap_escape_the_archive_description' ) ) {
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/**
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* Escapes the description for an author or post type archive.
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*
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* @param string $description Archive description.
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* @return string Maybe escaped $description.
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*/
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function understrap_escape_the_archive_description( $description ) {
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if ( is_author() || is_post_type_archive() ) {
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return wp_kses_post( $description );
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}
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/*
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* All other descriptions are retrieved via term_description() which returns
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* a sanitized description.
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*/
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return $description;
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}
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} // End of if function_exists( 'understrap_escape_the_archive_description' ).
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// Escapes all occurrences of 'the_title()' and 'get_the_title()'.
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add_filter( 'the_title', 'understrap_kses_title' );
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// Escapes all occurrences of 'the_archive_title' and 'get_the_archive_title()'.
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add_filter( 'get_the_archive_title', 'understrap_kses_title' );
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if ( ! function_exists( 'understrap_kses_title' ) ) {
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/**
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* Sanitizes data for allowed HTML tags for titles.
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*
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* @param string $data Title to filter.
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* @return string Filtered title with allowed HTML tags and attributes intact.
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*/
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function understrap_kses_title( $data ) {
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// Get allowed tags and protocols.
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$allowed_tags = wp_kses_allowed_html( 'post' );
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$allowed_protocols = wp_allowed_protocols();
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if (
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in_array( 'polylang/polylang.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ), true )
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|| in_array( 'polylang-pro/polylang.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ), true )
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) {
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if ( ! in_array( 'data', $allowed_protocols, true ) ) {
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$allowed_protocols[] = 'data';
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}
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}
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if ( has_filter( 'understrap_kses_title' ) ) {
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/**
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* Filters the allowed HTML tags and attributes in titles.
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*
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* @param array<string,array<string,bool>> $allowed_tags Allowed HTML tags and attributes in titles.
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*/
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$allowed_tags = apply_filters_deprecated( 'understrap_kses_title', array( $allowed_tags ), '1.2.0' );
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}
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return wp_kses( $data, $allowed_tags, $allowed_protocols );
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}
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} // End of if function_exists( 'understrap_kses_title' ).
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if ( ! function_exists( 'understrap_hide_posted_by' ) ) {
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/**
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* Hides the posted by markup in `understrap_posted_on()`.
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*
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* @since 1.0.0
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*
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* @param string $byline Posted by HTML markup.
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* @return string Maybe filtered posted by HTML markup.
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*/
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function understrap_hide_posted_by( $byline ) {
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if ( is_author() ) {
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return '';
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}
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return $byline;
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}
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}
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add_filter( 'understrap_posted_by', 'understrap_hide_posted_by' );
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add_filter( 'excerpt_more', 'understrap_custom_excerpt_more' );
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if ( ! function_exists( 'understrap_custom_excerpt_more' ) ) {
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/**
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* Removes the ... from the excerpt read more link
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*
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* @param string $more The excerpt.
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*
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* @return string
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*/
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function understrap_custom_excerpt_more( $more ) {
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if ( ! is_admin() ) {
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$more = '';
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}
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return $more;
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}
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}
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add_filter( 'wp_trim_excerpt', 'understrap_all_excerpts_get_more_link' );
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if ( ! function_exists( 'understrap_all_excerpts_get_more_link' ) ) {
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/**
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* Adds a custom read more link to all excerpts, manually or automatically generated
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*
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* @param string $post_excerpt Posts's excerpt.
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*
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* @return string
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*/
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function understrap_all_excerpts_get_more_link( $post_excerpt ) {
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if ( is_admin() || ! get_the_ID() ) {
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return $post_excerpt;
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}
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$permalink = esc_url( get_permalink( (int) get_the_ID() ) ); // @phpstan-ignore-line -- post exists
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return $post_excerpt . ' [...]<p><a class="btn btn-secondary understrap-read-more-link" href="' . $permalink . '">' . __(
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'Read More...',
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'understrap'
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) . '<span class="screen-reader-text"> from ' . get_the_title( get_the_ID() ) . '</span></a></p>';
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}
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}
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