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WordPress function to create a breadcrumb nav.
<?php
/**
* Wrap the crumb.
* @see https://schema.org/breadcrumb
*/
if( ! function_exists( 'anchorage_get_breadcrumb' ) ) {
function anchorage_get_breadcrumb( $crumb_title, $crumb_link ) {
$crumb_title = wp_kses_post( $crumb_title );
$crumb_link = esc_url( $crumb_link );
$out = "<span itemprop='title'>$crumb_title</span>";
// Unless it's a crumb to the current page, link it.
if( ! empty( $crumb_link ) ) {
$out = "<a href='$crumb_link' class='breadcrumbs-link' itemprop='url'>$out</a>";
}
return $out;
}
}
/**
* Determine if a post type supports a taxonomy.
*
* @param string $post_type The name of a post type.
* @return boolean Returns true if the given post type supports the given taxonomy, else false.
*/
if( ! function_exists( 'anchorage_post_type_has_tax' ) ) {
function anchorage_post_type_has_tax( $post_type, $taxonomy_name ) {
if( ( $post_type == 'post' ) && ( ( $taxonomy_name == 'post_tag' ) || ( $taxonomy_name == 'category' ) ) ) { return true; }
$post_type_object = get_post_type_object( $post_type );
$taxonomies = $post_type_object -> taxonomies;
if( empty( $taxonomies ) ) { return false; }
if( in_array( $taxonomy_name, $taxonomies ) ) {
return true;
}
return false;
}
}
/**
* Determine if a post type is custom or not.
*
* @param string $post_type The name of a post type.
* @return boolean Returns true if the given post type is custom, else false.
*/
if( ! function_exists( 'anchorage_is_custom_post_type' ) ) {
function anchorage_is_custom_post_type( $post_type ) {
$all_custom_post_types = get_post_types( array ( '_builtin' => FALSE ) );
// there are no custom post types
if ( empty ( $all_custom_post_types ) ) {
return false;
}
$custom_types = array_keys( $all_custom_post_types );
if( in_array( $post_type, $custom_types ) ) {
return true;
}
return false;
}
}
/**
* Determine if the current view is tax, tag, or cat.
*
* @return boolean Returns true if current view is tax, tag, or cat, otherwise false.
*/
if( ! function_exists( 'anchorage_is_termish' ) ) {
function anchorage_is_termish() {
if( is_tax() || is_tag() || is_category() ) {
return true;
}
return false;
}
}
/**
* Determine if the current view is single, singular, or page.
*
* @return boolean Returns true if is single, singular, or page, otherwise false.
*/
if( ! function_exists( 'anchorage_is_singlish' ) ) {
function anchorage_is_singlish() {
if( is_single() || is_singular() || is_page() ) {
return true;
}
return false;
}
}
/**
* Get an HTML <hr /> with classes expected by our stylesheet.
*
* @param array $classes An array of HTML classes.
* @return string An HTML <hr /> with classes expected by our stylesheet.
*
* @since anchorage 1.0
*/
if( ! function_exists( 'anchorage_get_hard_rule' ) ) {
function anchorage_get_hard_rule( $classes = array() ) {
$classes = array_map( 'sanitize_html_class', $classes );
$classes []= 'break';
$classes_str = implode( ' ', $classes );
$out = "<hr class='$classes_str' />";
return $out;
}
}
/**
* Grab the unicode char for an arrow in a given direction, with classes and an href.
*
* @param string $direction The direction in which the arrow will point.
* @param array $classes An array of HTML classes for the arrow.
* @param string $href Link the arrow to a url.
* @return string The arrow, with classes, wrapped in either a link or span.
*
* @since anchorage 1.0
*/
if( ! function_exists( 'anchorage_get_arrow' ) ) {
function anchorage_get_arrow( $direction = 'down', $classes = array(), $href = '#' ) {
// Grab the correct arrow char for the direction.
if ( $direction == 'left' ) {
$out = esc_html__( '&larr;', 'anchorage' );
} elseif ( $direction == 'up' ) {
$out = esc_html__( '&uarr;', 'anchorage' );
} elseif ( $direction == 'right' ) {
$out = esc_html__( '&rarr;', 'anchorage' );
} else {
$out = esc_html__( '&darr;', 'anchorage' );
}
// Build the classes.
$classes = array_map( 'sanitize_html_class', $classes );
$classes = implode( ' ', $classes );
$classes = " class='$classes arrow' ";
$out = " $out ";
// If there's an href, wrap the arrow in a link.
$href = esc_attr( $href );
if( ! empty( $href ) ) {
$out = "<a href='$href' $classes>$out</a>";
// Else, if there are classes, wrap it in a span.
} elseif( ! empty( $classes ) ) {
$out = "<span $classes>$out</span>";
}
return $out;
}
}
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