595 lines
16 KiB
PHP
595 lines
16 KiB
PHP
<?php
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function get_category_children($id, $before = '/', $after = '', $visited=array()) {
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if ( 0 == $id )
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return '';
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$chain = '';
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// TODO: consult hierarchy
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$cat_ids = get_all_category_ids();
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foreach ( $cat_ids as $cat_id ) {
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if ( $cat_id == $id )
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continue;
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$category = get_category($cat_id);
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if ( is_wp_error( $category ) )
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return $category;
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if ( $category->parent == $id && !in_array($category->term_id, $visited) ) {
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$visited[] = $category->term_id;
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$chain .= $before.$category->term_id.$after;
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$chain .= get_category_children($category->term_id, $before, $after);
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}
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}
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return $chain;
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}
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function get_category_link($category_id) {
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global $wp_rewrite;
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$catlink = $wp_rewrite->get_category_permastruct();
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if ( empty($catlink) ) {
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$file = get_option('home') . '/';
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$catlink = $file . '?cat=' . $category_id;
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} else {
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$category = &get_category($category_id);
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if ( is_wp_error( $category ) )
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return $category;
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$category_nicename = $category->slug;
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if ( $parent = $category->parent )
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$category_nicename = get_category_parents($parent, false, '/', true) . $category_nicename;
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$catlink = str_replace('%category%', $category_nicename, $catlink);
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$catlink = get_option('home') . user_trailingslashit($catlink, 'category');
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}
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return apply_filters('category_link', $catlink, $category_id);
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}
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function get_category_parents($id, $link = FALSE, $separator = '/', $nicename = FALSE, $visited = array()){
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$chain = '';
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$parent = &get_category($id);
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if ( is_wp_error( $parent ) )
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return $parent;
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if ( $nicename )
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$name = $parent->slug;
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else
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$name = $parent->cat_name;
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if ( $parent->parent && ($parent->parent != $parent->term_id) && !in_array($parent->parent, $visited) ) {
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$visited[] = $parent->parent;
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$chain .= get_category_parents($parent->parent, $link, $separator, $nicename, $visited);
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}
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if ( $link )
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$chain .= '<a href="' . get_category_link($parent->term_id) . '" title="' . sprintf(__("View all posts in %s"), $parent->cat_name) . '">'.$name.'</a>' . $separator;
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else
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$chain .= $name.$separator;
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return $chain;
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}
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function get_the_category($id = false) {
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global $post;
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$id = (int) $id;
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if ( !$id )
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$id = (int) $post->ID;
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$categories = get_object_term_cache($id, 'category');
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if ( false === $categories )
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$categories = wp_get_object_terms($id, 'category');
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if ( !empty($categories) )
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usort($categories, '_usort_terms_by_name');
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else
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$categories = array();
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foreach(array_keys($categories) as $key) {
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_make_cat_compat($categories[$key]);
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}
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return $categories;
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}
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function _usort_terms_by_name($a, $b) {
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return strcmp($a->name, $b->name);
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}
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function _usort_terms_by_ID($a, $b) {
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if ( $a->term_id > $b->term_id )
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return 1;
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elseif ( $a->term_id < $b->term_id )
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return -1;
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else
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return 0;
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}
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function get_the_category_by_ID($cat_ID) {
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$cat_ID = (int) $cat_ID;
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$category = &get_category($cat_ID);
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if ( is_wp_error( $category ) )
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return $category;
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return $category->name;
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}
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function get_the_category_list($separator = '', $parents='', $post_id = false) {
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global $wp_rewrite;
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$categories = get_the_category($post_id);
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if (empty($categories))
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return apply_filters('the_category', __('Uncategorized'), $separator, $parents);
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$rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"';
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$thelist = '';
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if ( '' == $separator ) {
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$thelist .= '<ul class="post-categories">';
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foreach ( $categories as $category ) {
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$thelist .= "\n\t<li>";
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switch ( strtolower($parents) ) {
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case 'multiple':
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if ($category->parent)
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$thelist .= get_category_parents($category->parent, TRUE);
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$thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a></li>';
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break;
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case 'single':
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$thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>';
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if ($category->parent)
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$thelist .= get_category_parents($category->parent, FALSE);
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$thelist .= $category->name.'</a></li>';
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break;
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case '':
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default:
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$thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->cat_name.'</a></li>';
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}
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}
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$thelist .= '</ul>';
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} else {
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$i = 0;
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foreach ( $categories as $category ) {
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if ( 0 < $i )
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$thelist .= $separator . ' ';
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switch ( strtolower($parents) ) {
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case 'multiple':
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if ( $category->parent )
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$thelist .= get_category_parents($category->parent, TRUE);
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$thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->cat_name.'</a>';
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break;
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case 'single':
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$thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>';
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if ( $category->parent )
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$thelist .= get_category_parents($category->parent, FALSE);
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$thelist .= "$category->cat_name</a>";
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break;
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case '':
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default:
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$thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a>';
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}
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++$i;
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}
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}
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return apply_filters('the_category', $thelist, $separator, $parents);
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}
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/*
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* in_category() - Checks whether the current post is within a particular category
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*
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* This function checks to see if the post is within the supplied category. The categoy
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* can be specified by number or name and will be checked as a name first to allow for categories with numeric names.
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* Note: Prior to v2.5 of WordPress category names where not supported.
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*
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* @since 1.2.0
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*
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* @param int|string $category
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* @return bool true if the post is in the supplied category
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*/
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function in_category( $category ) { // Check if the current post is in the given category
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global $post;
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if ( empty($category) )
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return false;
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// If category is not an int, check to see if it's a name
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if ( ! is_int($category) ) {
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$cat_ID = get_cat_ID($category);
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if ( $cat_ID )
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$category = $cat_ID;
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}
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$categories = get_object_term_cache($post->ID, 'category');
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if ( false === $categories )
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$categories = wp_get_object_terms($post->ID, 'category');
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if ( array_key_exists($category, $categories) )
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return true;
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else
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return false;
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}
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function the_category($separator = '', $parents='', $post_id = false) {
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echo get_the_category_list($separator, $parents, $post_id);
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}
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function category_description($category = 0) {
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global $cat;
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if ( !$category )
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$category = $cat;
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return get_term_field('description', $category, 'category');
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}
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function wp_dropdown_categories($args = '') {
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$defaults = array(
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'show_option_all' => '', 'show_option_none' => '',
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'orderby' => 'ID', 'order' => 'ASC',
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'show_last_update' => 0, 'show_count' => 0,
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'hide_empty' => 1, 'child_of' => 0,
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'exclude' => '', 'echo' => 1,
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'selected' => 0, 'hierarchical' => 0,
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'name' => 'cat', 'class' => 'postform',
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'depth' => 0, 'tab_index' => 0
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);
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$defaults['selected'] = ( is_category() ) ? get_query_var('cat') : 0;
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$r = wp_parse_args( $args, $defaults );
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$r['include_last_update_time'] = $r['show_last_update'];
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extract( $r );
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$tab_index_attribute = '';
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if ( (int) $tab_index > 0 )
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$tab_index_attribute = " tabindex=\"$tab_index\"";
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$categories = get_categories($r);
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$output = '';
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if ( ! empty($categories) ) {
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$output = "<select name='$name' id='$name' class='$class' $tab_index_attribute>\n";
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if ( $show_option_all ) {
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$show_option_all = apply_filters('list_cats', $show_option_all);
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$output .= "\t<option value='0'>$show_option_all</option>\n";
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}
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if ( $show_option_none) {
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$show_option_none = apply_filters('list_cats', $show_option_none);
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$output .= "\t<option value='-1'>$show_option_none</option>\n";
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}
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if ( $hierarchical )
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$depth = $r['depth']; // Walk the full depth.
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else
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$depth = -1; // Flat.
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$output .= walk_category_dropdown_tree($categories, $depth, $r);
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$output .= "</select>\n";
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}
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$output = apply_filters('wp_dropdown_cats', $output);
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if ( $echo )
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echo $output;
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return $output;
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}
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function wp_list_categories($args = '') {
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$defaults = array(
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'show_option_all' => '', 'orderby' => 'name',
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'order' => 'ASC', 'show_last_update' => 0,
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'style' => 'list', 'show_count' => 0,
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'hide_empty' => 1, 'use_desc_for_title' => 1,
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'child_of' => 0, 'feed' => '', 'feed_type' => '',
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'feed_image' => '', 'exclude' => '', 'current_category' => 0,
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'hierarchical' => true, 'title_li' => __('Categories'),
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'echo' => 1, 'depth' => 0
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);
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$r = wp_parse_args( $args, $defaults );
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if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) {
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$r['pad_counts'] = true;
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}
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if ( isset( $r['show_date'] ) ) {
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$r['include_last_update_time'] = $r['show_date'];
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}
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extract( $r );
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$categories = get_categories($r);
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$output = '';
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if ( $title_li && 'list' == $style )
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$output = '<li class="categories">' . $r['title_li'] . '<ul>';
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if ( empty($categories) ) {
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if ( 'list' == $style )
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$output .= '<li>' . __("No categories") . '</li>';
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else
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$output .= __("No categories");
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} else {
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global $wp_query;
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if( !empty($show_option_all) )
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if ('list' == $style )
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$output .= '<li><a href="' . get_bloginfo('url') . '">' . $show_option_all . '</a></li>';
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else
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$output .= '<a href="' . get_bloginfo('url') . '">' . $show_option_all . '</a>';
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if ( empty( $r['current_category'] ) && is_category() )
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$r['current_category'] = $wp_query->get_queried_object_id();
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if ( $hierarchical )
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$depth = $r['depth'];
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else
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$depth = -1; // Flat.
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$output .= walk_category_tree($categories, $depth, $r);
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}
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if ( $title_li && 'list' == $style )
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$output .= '</ul></li>';
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$output = apply_filters('wp_list_categories', $output);
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if ( $echo )
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echo $output;
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else
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return $output;
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}
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function wp_tag_cloud( $args = '' ) {
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$defaults = array(
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'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
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'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
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'exclude' => '', 'include' => ''
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);
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$args = wp_parse_args( $args, $defaults );
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$tags = get_tags( array_merge($args, array('orderby' => 'count', 'order' => 'DESC')) ); // Always query top tags
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if ( empty($tags) )
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return;
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foreach ( $tags as $key => $tag ) {
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$link = get_tag_link( $tag->term_id );
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if ( is_wp_error( $link ) )
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return false;
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$tags[ $key ]->link = $link;
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$tags[ $key ]->id = $tag->term_id;
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}
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$return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
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$return = apply_filters( 'wp_tag_cloud', $return, $args );
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if ( 'array' == $args['format'] )
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return $return;
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echo $return;
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}
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/**
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* Generates a tag cloud (heatmap) from provided data
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*
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* TODO: Complete
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*
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* @since 2.6
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*
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* $tags = array of objects with the properties 'name', 'link', 'id', and 'count'
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* $args['format'] = 'flat' => whitespace separated, 'list' => UL, 'array' => array()
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* $args['orderby'] = 'name', 'count'
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*/
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function wp_generate_tag_cloud( $tags, $args = '' ) {
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global $wp_rewrite;
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$defaults = array(
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'smallest' => 8, 'largest' => 22, 'unit' => 'pt',
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'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
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'single_text' => '%d topic', 'multiple_text' => '%d topics'
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);
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$args = wp_parse_args( $args, $defaults );
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extract($args);
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if ( empty($tags) )
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return;
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$counts = array();
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foreach ( (array) $tags as $key => $tag )
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$counts[ $key ] = $tag->count;
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$min_count = min($counts);
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$spread = max($counts) - $min_count;
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if ( $spread <= 0 )
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$spread = 1;
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$font_spread = $largest - $smallest;
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if ( $font_spread <= 0 )
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$font_spread = 1;
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$font_step = $font_spread / $spread;
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// SQL cannot save you; this is a second (potentially different) sort on a subset of data.
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if ( 'name' == $orderby )
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uksort($counts, 'strnatcasecmp');
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else
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asort($counts);
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if ( 'DESC' == $order )
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$counts = array_reverse( $counts, true );
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elseif ( 'RAND' == $order ) {
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$keys = array_rand( $counts, count($counts) );
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foreach ( $keys as $key )
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$temp[$key] = $counts[$key];
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$counts = $temp;
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unset($temp);
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}
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$a = array();
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$rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? ' rel="tag"' : '';
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foreach ( $counts as $key => $count ) {
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$tag_link = clean_url( $tags[ $key ]->link );
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$tag_id = $tags[ $key ]->id;
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$tag_name = $tags[ $key ]->name;
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$a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . attribute_escape( sprintf( __ngettext($single_text, $multiple_text, $count), $count ) ) . "'$rel style='font-size: " .
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( $smallest + ( ( $count - $min_count ) * $font_step ) )
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. "$unit;'>$tag_name</a>";
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}
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switch ( $format ) :
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case 'array' :
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$return =& $a;
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break;
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case 'list' :
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$return = "<ul class='wp-tag-cloud'>\n\t<li>";
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$return .= join("</li>\n\t<li>", $a);
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$return .= "</li>\n</ul>\n";
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break;
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default :
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$return = join("\n", $a);
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break;
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endswitch;
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return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
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}
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//
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// Helper functions
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//
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function walk_category_tree() {
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$walker = new Walker_Category;
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$args = func_get_args();
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return call_user_func_array(array(&$walker, 'walk'), $args);
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}
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function walk_category_dropdown_tree() {
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$walker = new Walker_CategoryDropdown;
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$args = func_get_args();
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return call_user_func_array(array(&$walker, 'walk'), $args);
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}
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//
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// Tags
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//
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function get_tag_link( $tag_id ) {
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global $wp_rewrite;
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$taglink = $wp_rewrite->get_tag_permastruct();
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$tag = &get_term($tag_id, 'post_tag');
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if ( is_wp_error( $tag ) )
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return $tag;
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$slug = $tag->slug;
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if ( empty($taglink) ) {
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$file = get_option('home') . '/';
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$taglink = $file . '?tag=' . $slug;
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} else {
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$taglink = str_replace('%tag%', $slug, $taglink);
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$taglink = get_option('home') . user_trailingslashit($taglink, 'category');
|
|
}
|
|
return apply_filters('tag_link', $taglink, $tag_id);
|
|
}
|
|
|
|
function get_the_tags( $id = 0 ) {
|
|
return apply_filters( 'get_the_tags', get_the_terms($id, 'post_tag') );
|
|
}
|
|
|
|
function get_the_tag_list( $before = '', $sep = '', $after = '' ) {
|
|
return apply_filters( 'the_tags', get_the_term_list(0, 'post_tag', $before, $sep, $after) );
|
|
}
|
|
|
|
function the_tags( $before = 'Tags: ', $sep = ', ', $after = '' ) {
|
|
return the_terms( 0, 'post_tag', $before, $sep, $after );
|
|
}
|
|
|
|
function get_the_terms( $id = 0, $taxonomy ) {
|
|
global $post;
|
|
|
|
$id = (int) $id;
|
|
|
|
if ( ! $id && ! in_the_loop() )
|
|
return false; // in-the-loop function
|
|
|
|
if ( !$id )
|
|
$id = (int) $post->ID;
|
|
|
|
$terms = get_object_term_cache($id, $taxonomy);
|
|
if ( false === $terms )
|
|
$terms = wp_get_object_terms($id, $taxonomy);
|
|
|
|
if ( empty( $terms ) )
|
|
return false;
|
|
|
|
return $terms;
|
|
}
|
|
|
|
function get_the_term_list( $id = 0, $taxonomy, $before = '', $sep = '', $after = '' ) {
|
|
$terms = get_the_terms($id, $taxonomy);
|
|
|
|
if ( is_wp_error($terms) )
|
|
return $terms;
|
|
|
|
if ( empty( $terms ) )
|
|
return false;
|
|
|
|
foreach ( $terms as $term ) {
|
|
$link = get_term_link($term, $taxonomy);
|
|
if ( is_wp_error( $link ) )
|
|
return $link;
|
|
$term_links[] = '<a href="' . $link . '" rel="tag">' . $term->name . '</a>';
|
|
}
|
|
|
|
$term_links = apply_filters( "term_links-$taxonomy", $term_links );
|
|
|
|
return $before . join($sep, $term_links) . $after;
|
|
}
|
|
|
|
function the_terms( $id, $taxonomy, $before = '', $sep = '', $after = '' ) {
|
|
$return = get_the_term_list($id, $taxonomy, $before, $sep, $after);
|
|
if ( is_wp_error( $return ) )
|
|
return false;
|
|
else
|
|
echo $return;
|
|
}
|
|
|
|
/**
|
|
* Check if the current post has the given tag
|
|
*
|
|
* @package WordPress
|
|
* @since 2.6
|
|
*
|
|
* @uses wp_get_object_terms() Gets the tags.
|
|
*
|
|
* @param string|int|array $tag Optional. The tag name/id/slug or array of them to check for
|
|
* @return bool True if the current post has the given tag, or any tag, if no tag specified
|
|
*/
|
|
function has_tag($tag = '') {
|
|
global $post;
|
|
$taxonomy = 'post_tag';
|
|
|
|
if ( !in_the_loop() ) return false; // in-the-loop function
|
|
|
|
$post_id = (int) $post->ID;
|
|
|
|
$terms = get_object_term_cache($post_id, $taxonomy);
|
|
if (empty($terms))
|
|
$terms = wp_get_object_terms($post_id, $taxonomy);
|
|
if (empty($terms)) return false;
|
|
|
|
if (empty($tag)) return (!empty($terms));
|
|
|
|
$tag = (array) $tag;
|
|
|
|
foreach($terms as $term) {
|
|
if ( in_array( $term->term_id, $tag ) ) return true;
|
|
if ( in_array( $term->name, $tag ) ) return true;
|
|
if ( in_array( $term->slug, $tag ) ) return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
?>
|