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Changeset 34110

Timestamp:

09/14/2015 03:09:37 AM (9 years ago)

Author:

wonderboymusic

Message:

Move Walker_Category and Walker_CategoryDropdown into their own files via svn cp. Remove them from category-template.php. Load them in category.php. svn cp category.php over to category-functions.php, which also loads now in category.php.

See #33413.

Location:

trunk/src/wp-includes

Files:

: 2 edited
: 3 copied

category-functions.php (copied) (copied from trunk/src/wp-includes/category.php)
category-template.php (modified) (1 diff)
category.php (modified) (1 diff)
class-walker-category-dropdown.php (copied) (copied from trunk/src/wp-includes/category-template.php) (2 diffs)
class-walker-category.php (copied) (copied from trunk/src/wp-includes/category-template.php) (2 diffs)

Legend:

: Unmodified
: Added
: Removed

trunk/src/wp-includes/category-template.php

-                      r33804
+                      r34110
+}
-/**
- * Create HTML list of categories.
+ *
- * @package WordPress
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_Category extends Walker {
-    /**
-     * What the class handles.
+     *
-     * @see Walker::$tree_type
-     * @since 2.1.0
-     * @var string
-     */
-    public $tree_type = 'category';
-    /**
-     * Database fields to use.
+     *
-     * @see Walker::$db_fields
-     * @since 2.1.0
-     * @todo Decouple this
-     * @var array
-     */
-    public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
-    /**
-     * Starts the list before the elements are added.
+     *
-     * @see Walker::start_lvl()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output Passed by reference. Used to append additional content.
-     * @param int    $depth  Depth of category. Used for tab indentation.
-     * @param array  $args   An array of arguments. Will only append content if style argument value is 'list'.
-     *                       @see wp_list_categories()
-     */
-    public function start_lvl( &$output, $depth = 0, $args = array() ) {
-        if ( 'list' != $args['style'] )
-            return;
-        $indent = str_repeat("\t", $depth);
-        $output .= "$indent<ul class='children'>\n";
+    }
-    /**
-     * Ends the list of after the elements are added.
+     *
-     * @see Walker::end_lvl()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output Passed by reference. Used to append additional content.
-     * @param int    $depth  Depth of category. Used for tab indentation.
-     * @param array  $args   An array of arguments. Will only append content if style argument value is 'list'.
-     *                       @wsee wp_list_categories()
-     */
-    public function end_lvl( &$output, $depth = 0, $args = array() ) {
-        if ( 'list' != $args['style'] )
-            return;
-        $indent = str_repeat("\t", $depth);
-        $output .= "$indent</ul>\n";
+    }
-    /**
-     * Start the element output.
+     *
-     * @see Walker::start_el()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output   Passed by reference. Used to append additional content.
-     * @param object $category Category data object.
-     * @param int    $depth    Depth of category in reference to parents. Default 0.
-     * @param array  $args     An array of arguments. @see wp_list_categories()
-     * @param int    $id       ID of the current category.
-     */
-    public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
-        /** This filter is documented in wp-includes/category-template.php */
-        $cat_name = apply_filters(
-            'list_cats',
-            esc_attr( $category->name ),
-            $category
-        );
-        // Don't generate an element if the category name is empty.
-        if ( ! $cat_name ) {
-            return;
+        }
-        $link = '<a href="' . esc_url( get_term_link( $category ) ) . '" ';
-        if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) {
-            /**
-             * Filter the category description for display.
+             *
-             * @since 1.2.0
+             *
-             * @param string $description Category description.
-             * @param object $category    Category object.
-             */
-            $link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
+        }
-        $link .= '>';
-        $link .= $cat_name . '</a>';
-        if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
-            $link .= ' ';
-            if ( empty( $args['feed_image'] ) ) {
-                $link .= '(';
+            }
-            $link .= '<a href="' . esc_url( get_term_feed_link( $category->term_id, $category->taxonomy, $args['feed_type'] ) ) . '"';
-            if ( empty( $args['feed'] ) ) {
-                $alt = ' alt="' . sprintf(__( 'Feed for all posts filed under %s' ), $cat_name ) . '"';
-            } else {
-                $alt = ' alt="' . $args['feed'] . '"';
-                $name = $args['feed'];
-                $link .= empty( $args['title'] ) ? '' : $args['title'];
+            }
-            $link .= '>';
-            if ( empty( $args['feed_image'] ) ) {
-                $link .= $name;
-            } else {
-                $link .= "<img src='" . $args['feed_image'] . "'$alt" . ' />';
+            }
-            $link .= '</a>';
-            if ( empty( $args['feed_image'] ) ) {
-                $link .= ')';
+            }
+        }
-        if ( ! empty( $args['show_count'] ) ) {
-            $link .= ' (' . number_format_i18n( $category->count ) . ')';
+        }
-        if ( 'list' == $args['style'] ) {
-            $output .= "\t<li";
-            $css_classes = array(
-                'cat-item',
-                'cat-item-' . $category->term_id,
-            );
-            if ( ! empty( $args['current_category'] ) ) {
-                // 'current_category' can be an array, so we use `get_terms()`.
-                $_current_terms = get_terms( $category->taxonomy, array(
-                    'include' => $args['current_category'],
-                    'hide_empty' => false,
-                ) );
-                foreach ( $_current_terms as $_current_term ) {
-                    if ( $category->term_id == $_current_term->term_id ) {
-                        $css_classes[] = 'current-cat';
-                    } elseif ( $category->term_id == $_current_term->parent ) {
-                        $css_classes[] = 'current-cat-parent';
+                    }
+                }
+            }
-            /**
-             * Filter the list of CSS classes to include with each category in the list.
+             *
-             * @since 4.2.0
+             *
-             * @see wp_list_categories()
+             *
-             * @param array  $css_classes An array of CSS classes to be applied to each list item.
-             * @param object $category    Category data object.
-             * @param int    $depth       Depth of page, used for padding.
-             * @param array  $args        An array of wp_list_categories() arguments.
-             */
-            $css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) );
-            $output .=  ' class="' . $css_classes . '"';
-            $output .= ">$link\n";
-        } else {
-            $output .= "\t$link<br />\n";
+        }
+    }
-    /**
-     * Ends the element output, if needed.
+     *
-     * @see Walker::end_el()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output Passed by reference. Used to append additional content.
-     * @param object $page   Not used.
-     * @param int    $depth  Depth of category. Not used.
-     * @param array  $args   An array of arguments. Only uses 'list' for whether should append to output. @see wp_list_categories()
-     */
-    public function end_el( &$output, $page, $depth = 0, $args = array() ) {
-        if ( 'list' != $args['style'] )
-            return;
-        $output .= "</li>\n";
+    }
+}
-/**
- * Create HTML dropdown list of Categories.
+ *
- * @package WordPress
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_CategoryDropdown extends Walker {
-    /**
-     * @see Walker::$tree_type
-     * @since 2.1.0
-     * @var string
-     */
-    public $tree_type = 'category';
-    /**
-     * @see Walker::$db_fields
-     * @since 2.1.0
-     * @todo Decouple this
-     * @var array
-     */
-    public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
-    /**
-     * Start the element output.
+     *
-     * @see Walker::start_el()
-     * @since 2.1.0
+     *
-     * @param string $output   Passed by reference. Used to append additional content.
-     * @param object $category Category data object.
-     * @param int    $depth    Depth of category. Used for padding.
-     * @param array  $args     Uses 'selected', 'show_count', and 'value_field' keys, if they exist.
-     *                         See {@see wp_dropdown_categories()}.
-     */
-    public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
-        $pad = str_repeat('&nbsp;', $depth * 3);
-        /** This filter is documented in wp-includes/category-template.php */
-        $cat_name = apply_filters( 'list_cats', $category->name, $category );
-        if ( isset( $args['value_field'] ) && isset( $category->{$args['value_field']} ) ) {
-            $value_field = $args['value_field'];
-        } else {
-            $value_field = 'term_id';
+        }
-        $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $category->{$value_field} ) . "\"";
-        // Type-juggling causes false matches, so we force everything to a string.
-        if ( (string) $category->{$value_field} === (string) $args['selected'] )
-            $output .= ' selected="selected"';
-        $output .= '>';
-        $output .= $pad.$cat_name;
-        if ( $args['show_count'] )
-            $output .= '&nbsp;&nbsp;('. number_format_i18n( $category->count ) .')';
-        $output .= "</option>\n";
+    }
+}
 //
 // Tags

trunk/src/wp-includes/category.php

-                      r32568
+                      r34110
  */
+/**
+ * Retrieve list of category objects.
+ *
+ * If you change the type to 'link' in the arguments, then the link categories
+ * will be returned instead. Also all categories will be updated to be backwards
+ * compatible with pre-2.3 plugins and themes.
+ *
+ * @since 2.1.0
+ * @see get_terms() Type of arguments that can be changed.
+ * @link https://codex.wordpress.org/Function_Reference/get_categories
+ *
+ * @param string|array $args Optional. Change the defaults retrieving categories.
+ * @return array List of categories.
+ */
+function get_categories( $args = '' ) {
+    $defaults = array( 'taxonomy' => 'category' );
+    $args = wp_parse_args( $args, $defaults );
+/** Core category functionality */
+require_once( ABSPATH . WPINC . '/category-functions.php' );
+    $taxonomy = $args['taxonomy'];
+/** Walker_Category class */
+require_once( ABSPATH . WPINC . '/class-walker-category.php' );
+    /**
+     * Filter the taxonomy used to retrieve terms when calling {@see get_categories()}.
+     *
+     * @since 2.7.0
+     *
+     * @param string $taxonomy Taxonomy to retrieve terms from.
+     * @param array  $args     An array of arguments. See {@see get_terms()}.
+     */
+    $taxonomy = apply_filters( 'get_categories_taxonomy', $taxonomy, $args );
+    // Back compat
+    if ( isset($args['type']) && 'link' == $args['type'] ) {
+        _deprecated_argument( __FUNCTION__, '3.0', '' );
+        $taxonomy = $args['taxonomy'] = 'link_category';
+    }
+    $categories = (array) get_terms( $taxonomy, $args );
+    foreach ( array_keys( $categories ) as $k )
+        _make_cat_compat( $categories[$k] );
+    return $categories;
+}
+/**
+ * Retrieves category data given a category ID or category object.
+ *
+ * If you pass the $category parameter an object, which is assumed to be the
+ * category row object retrieved the database. It will cache the category data.
+ *
+ * If you pass $category an integer of the category ID, then that category will
+ * be retrieved from the database, if it isn't already cached, and pass it back.
+ *
+ * If you look at get_term(), then both types will be passed through several
+ * filters and finally sanitized based on the $filter parameter value.
+ *
+ * The category will converted to maintain backwards compatibility.
+ *
+ * @since 1.5.1
+ *
+ * @param int|object $category Category ID or Category row object
+ * @param string $output Optional. Constant OBJECT, ARRAY_A, or ARRAY_N
+ * @param string $filter Optional. Default is raw or no WordPress defined filter will applied.
+ * @return object|array|WP_Error|null Category data in type defined by $output parameter.
+ *                                    WP_Error if $category is empty, null if it does not exist.
+ */
+function get_category( $category, $output = OBJECT, $filter = 'raw' ) {
+    $category = get_term( $category, 'category', $output, $filter );
+    if ( is_wp_error( $category ) )
+        return $category;
+    _make_cat_compat( $category );
+    return $category;
+}
+/**
+ * Retrieve category based on URL containing the category slug.
+ *
+ * Breaks the $category_path parameter up to get the category slug.
+ *
+ * Tries to find the child path and will return it. If it doesn't find a
+ * match, then it will return the first category matching slug, if $full_match,
+ * is set to false. If it does not, then it will return null.
+ *
+ * It is also possible that it will return a WP_Error object on failure. Check
+ * for it when using this function.
+ *
+ * @since 2.1.0
+ *
+ * @param string $category_path URL containing category slugs.
+ * @param bool $full_match Optional. Whether full path should be matched.
+ * @param string $output Optional. Constant OBJECT, ARRAY_A, or ARRAY_N
+ * @return object|array|WP_Error|void Type is based on $output value.
+ */
+function get_category_by_path( $category_path, $full_match = true, $output = OBJECT ) {
+    $category_path = rawurlencode( urldecode( $category_path ) );
+    $category_path = str_replace( '%2F', '/', $category_path );
+    $category_path = str_replace( '%20', ' ', $category_path );
+    $category_paths = '/' . trim( $category_path, '/' );
+    $leaf_path  = sanitize_title( basename( $category_paths ) );
+    $category_paths = explode( '/', $category_paths );
+    $full_path = '';
+    foreach ( (array) $category_paths as $pathdir ) {
+        $full_path .= ( $pathdir != '' ? '/' : '' ) . sanitize_title( $pathdir );
+    }
+    $categories = get_terms( 'category', array('get' => 'all', 'slug' => $leaf_path) );
+    if ( empty( $categories ) ) {
+        return;
+    }
+    foreach ( $categories as $category ) {
+        $path = '/' . $leaf_path;
+        $curcategory = $category;
+        while ( ( $curcategory->parent != 0 ) && ( $curcategory->parent != $curcategory->term_id ) ) {
+            $curcategory = get_term( $curcategory->parent, 'category' );
+            if ( is_wp_error( $curcategory ) ) {
+                return $curcategory;
+            }
+            $path = '/' . $curcategory->slug . $path;
+        }
+        if ( $path == $full_path ) {
+            $category = get_term( $category->term_id, 'category', $output );
+            _make_cat_compat( $category );
+            return $category;
+        }
+    }
+    // If full matching is not required, return the first cat that matches the leaf.
+    if ( ! $full_match ) {
+        $category = get_term( reset( $categories )->term_id, 'category', $output );
+        _make_cat_compat( $category );
+        return $category;
+    }
+}
+/**
+ * Retrieve category object by category slug.
+ *
+ * @since 2.3.0
+ *
+ * @param string $slug The category slug.
+ * @return object Category data object
+ */
+function get_category_by_slug( $slug  ) {
+    $category = get_term_by( 'slug', $slug, 'category' );
+    if ( $category )
+        _make_cat_compat( $category );
+    return $category;
+}
+/**
+ * Retrieve the ID of a category from its name.
+ *
+ * @since 1.0.0
+ *
+ * @param string $cat_name Category name.
+ * @return int 0, if failure and ID of category on success.
+ */
+function get_cat_ID( $cat_name ) {
+    $cat = get_term_by( 'name', $cat_name, 'category' );
+    if ( $cat )
+        return $cat->term_id;
+    return 0;
+}
+/**
+ * Retrieve the name of a category from its ID.
+ *
+ * @since 1.0.0
+ *
+ * @param int $cat_id Category ID
+ * @return string Category name, or an empty string if category doesn't exist.
+ */
+function get_cat_name( $cat_id ) {
+    $cat_id = (int) $cat_id;
+    $category = get_term( $cat_id, 'category' );
+    if ( ! $category || is_wp_error( $category ) )
+        return '';
+    return $category->name;
+}
+/**
+ * Check if a category is an ancestor of another category.
+ *
+ * You can use either an id or the category object for both parameters. If you
+ * use an integer the category will be retrieved.
+ *
+ * @since 2.1.0
+ *
+ * @param int|object $cat1 ID or object to check if this is the parent category.
+ * @param int|object $cat2 The child category.
+ * @return bool Whether $cat2 is child of $cat1
+ */
+function cat_is_ancestor_of( $cat1, $cat2 ) {
+    return term_is_ancestor_of( $cat1, $cat2, 'category' );
+}
+/**
+ * Sanitizes category data based on context.
+ *
+ * @since 2.3.0
+ *
+ * @param object|array $category Category data
+ * @param string $context Optional. Default is 'display'.
+ * @return object|array Same type as $category with sanitized data for safe use.
+ */
+function sanitize_category( $category, $context = 'display' ) {
+    return sanitize_term( $category, 'category', $context );
+}
+/**
+ * Sanitizes data in single category key field.
+ *
+ * @since 2.3.0
+ *
+ * @param string $field Category key to sanitize
+ * @param mixed $value Category value to sanitize
+ * @param int $cat_id Category ID
+ * @param string $context What filter to use, 'raw', 'display', etc.
+ * @return mixed Same type as $value after $value has been sanitized.
+ */
+function sanitize_category_field( $field, $value, $cat_id, $context ) {
+    return sanitize_term_field( $field, $value, $cat_id, 'category', $context );
+}
+/* Tags */
+/**
+ * Retrieves all post tags.
+ *
+ * @since 2.3.0
+ * @see get_terms() For list of arguments to pass.
+ *
+ * @param string|array $args Tag arguments to use when retrieving tags.
+ * @return array List of tags.
+ */
+function get_tags( $args = '' ) {
+    $tags = get_terms( 'post_tag', $args );
+    if ( empty( $tags ) ) {
+        $return = array();
+        return $return;
+    }
+    /**
+     * Filter the array of term objects returned for the 'post_tag' taxonomy.
+     *
+     * @since 2.3.0
+     *
+     * @param array $tags Array of 'post_tag' term objects.
+     * @param array $args An array of arguments. @see get_terms()
+     */
+    $tags = apply_filters( 'get_tags', $tags, $args );
+    return $tags;
+}
+/**
+ * Retrieve post tag by tag ID or tag object.
+ *
+ * If you pass the $tag parameter an object, which is assumed to be the tag row
+ * object retrieved the database. It will cache the tag data.
+ *
+ * If you pass $tag an integer of the tag ID, then that tag will
+ * be retrieved from the database, if it isn't already cached, and pass it back.
+ *
+ * If you look at get_term(), then both types will be passed through several
+ * filters and finally sanitized based on the $filter parameter value.
+ *
+ * @since 2.3.0
+ *
+ * @param int|object $tag
+ * @param string $output Optional. Constant OBJECT, ARRAY_A, or ARRAY_N
+ * @param string $filter Optional. Default is raw or no WordPress defined filter will applied.
+ * @return object|array|WP_Error|null Tag data in type defined by $output parameter. WP_Error if $tag is empty, null if it does not exist.
+ */
+function get_tag( $tag, $output = OBJECT, $filter = 'raw' ) {
+    return get_term( $tag, 'post_tag', $output, $filter );
+}
+/* Cache */
+/**
+ * Remove the category cache data based on ID.
+ *
+ * @since 2.1.0
+ *
+ * @param int $id Category ID
+ */
+function clean_category_cache( $id ) {
+    clean_term_cache( $id, 'category' );
+}
+/**
+ * Update category structure to old pre 2.3 from new taxonomy structure.
+ *
+ * This function was added for the taxonomy support to update the new category
+ * structure with the old category one. This will maintain compatibility with
+ * plugins and themes which depend on the old key or property names.
+ *
+ * The parameter should only be passed a variable and not create the array or
+ * object inline to the parameter. The reason for this is that parameter is
+ * passed by reference and PHP will fail unless it has the variable.
+ *
+ * There is no return value, because everything is updated on the variable you
+ * pass to it. This is one of the features with using pass by reference in PHP.
+ *
+ * @since 2.3.0
+ * @access private
+ *
+ * @param array|object $category Category Row object or array
+ */
+function _make_cat_compat( &$category ) {
+    if ( is_object( $category ) && ! is_wp_error( $category ) ) {
+        $category->cat_ID = &$category->term_id;
+        $category->category_count = &$category->count;
+        $category->category_description = &$category->description;
+        $category->cat_name = &$category->name;
+        $category->category_nicename = &$category->slug;
+        $category->category_parent = &$category->parent;
+    } elseif ( is_array( $category ) && isset( $category['term_id'] ) ) {
+        $category['cat_ID'] = &$category['term_id'];
+        $category['category_count'] = &$category['count'];
+        $category['category_description'] = &$category['description'];
+        $category['cat_name'] = &$category['name'];
+        $category['category_nicename'] = &$category['slug'];
+        $category['category_parent'] = &$category['parent'];
+    }
+}
+/** Walker_CategoryDropdown class */
+require_once( ABSPATH . WPINC . '/class-walker-category-dropdown.php' );

trunk/src/wp-includes/class-walker-category-dropdown.php

-                      r34109
+                      r34110
 <?php
 /**
  * Category Template Tags and API.
+ * Category API: Walker_CategoryDropdown class
+ *
  * @package WordPress
  * @subpackage Template
  */
-/**
- * Retrieve category link URL.
+ *
- * @since 1.0.0
- * @see get_term_link()
+ *
- * @param int|object $category Category ID or object.
- * @return string Link on success, empty string if category does not exist.
- */
-function get_category_link( $category ) {
-    if ( ! is_object( $category ) )
-        $category = (int) $category;
-    $category = get_term_link( $category, 'category' );
-    if ( is_wp_error( $category ) )
-        return '';
-    return $category;
+}
-/**
- * Retrieve category parents with separator.
+ *
- * @since 1.2.0
+ *
- * @param int $id Category ID.
- * @param bool $link Optional, default is false. Whether to format with link.
- * @param string $separator Optional, default is '/'. How to separate categories.
- * @param bool $nicename Optional, default is false. Whether to use nice name for display.
- * @param array $visited Optional. Already linked to categories to prevent duplicates.
- * @return string|WP_Error A list of category parents on success, WP_Error on failure.
- */
-function get_category_parents( $id, $link = false, $separator = '/', $nicename = false, $visited = array() ) {
-    $chain = '';
-    $parent = get_term( $id, 'category' );
-    if ( is_wp_error( $parent ) )
-        return $parent;
-    if ( $nicename )
-        $name = $parent->slug;
-    else
-        $name = $parent->name;
-    if ( $parent->parent && ( $parent->parent != $parent->term_id ) && !in_array( $parent->parent, $visited ) ) {
-        $visited[] = $parent->parent;
-        $chain .= get_category_parents( $parent->parent, $link, $separator, $nicename, $visited );
+    }
-    if ( $link )
-        $chain .= '<a href="' . esc_url( get_category_link( $parent->term_id ) ) . '">'.$name.'</a>' . $separator;
-    else
-        $chain .= $name.$separator;
-    return $chain;
+}
-/**
- * Retrieve post categories.
+ *
- * This tag may be used outside The Loop by passing a post id as the parameter.
+ *
- * Note: This function only returns results from the default "category" taxonomy.
- * For custom taxonomies use get_the_terms().
+ *
- * @since 0.71
+ *
- * @param int $id Optional, default to current post ID. The post ID.
- * @return array Array of objects, one for each category assigned to the post.
- */
-function get_the_category( $id = false ) {
-    $categories = get_the_terms( $id, 'category' );
-    if ( ! $categories || is_wp_error( $categories ) )
-        $categories = array();
-    $categories = array_values( $categories );
-    foreach ( array_keys( $categories ) as $key ) {
-        _make_cat_compat( $categories[$key] );
+    }
-    /**
-     * Filter the array of categories to return for a post.
+     *
-     * @since 3.1.0
+     *
-     * @param array $categories An array of categories to return for the post.
-     */
-    return apply_filters( 'get_the_categories', $categories );
+}
-/**
- * Sort categories by name.
+ *
- * Used by usort() as a callback, should not be used directly. Can actually be
- * used to sort any term object.
+ *
- * @since 2.3.0
- * @access private
+ *
- * @param object $a
- * @param object $b
- * @return int
- */
-function _usort_terms_by_name( $a, $b ) {
-    return strcmp( $a->name, $b->name );
+}
-/**
- * Sort categories by ID.
+ *
- * Used by usort() as a callback, should not be used directly. Can actually be
- * used to sort any term object.
+ *
- * @since 2.3.0
- * @access private
+ *
- * @param object $a
- * @param object $b
- * @return int
- */
-function _usort_terms_by_ID( $a, $b ) {
-    if ( $a->term_id > $b->term_id )
-        return 1;
-    elseif ( $a->term_id < $b->term_id )
-        return -1;
-    else
-        return 0;
+}
-/**
- * Retrieve category name based on category ID.
+ *
- * @since 0.71
+ *
- * @param int $cat_ID Category ID.
- * @return string|WP_Error Category name on success, WP_Error on failure.
- */
-function get_the_category_by_ID( $cat_ID ) {
-    $cat_ID = (int) $cat_ID;
-    $category = get_term( $cat_ID, 'category' );
-    if ( is_wp_error( $category ) )
-        return $category;
-    return ( $category ) ? $category->name : '';
+}
-/**
- * Retrieve category list in either HTML list or custom format.
+ *
- * @since 1.5.1
+ *
- * @global WP_Rewrite $wp_rewrite
+ *
- * @param string $separator Optional, default is empty string. Separator for between the categories.
- * @param string $parents Optional. How to display the parents.
- * @param int $post_id Optional. Post ID to retrieve categories.
- * @return string
- */
-function get_the_category_list( $separator = '', $parents='', $post_id = false ) {
-    global $wp_rewrite;
-    if ( ! is_object_in_taxonomy( get_post_type( $post_id ), 'category' ) ) {
-        /** This filter is documented in wp-includes/category-template.php */
-        return apply_filters( 'the_category', '', $separator, $parents );
+    }
-    $categories = get_the_category( $post_id );
-    if ( empty( $categories ) ) {
-        /** This filter is documented in wp-includes/category-template.php */
-        return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents );
+    }
-    $rel = ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"';
-    $thelist = '';
-    if ( '' == $separator ) {
-        $thelist .= '<ul class="post-categories">';
-        foreach ( $categories as $category ) {
-            $thelist .= "\n\t<li>";
-            switch ( strtolower( $parents ) ) {
-                case 'multiple':
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, true, $separator );
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a></li>';
-                    break;
-                case 'single':
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '"  ' . $rel . '>';
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, false, $separator );
-                    $thelist .= $category->name.'</a></li>';
-                    break;
-                case '':
-                default:
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a></li>';
+            }
+        }
-        $thelist .= '</ul>';
-    } else {
-        $i = 0;
-        foreach ( $categories as $category ) {
-            if ( 0 < $i )
-                $thelist .= $separator;
-            switch ( strtolower( $parents ) ) {
-                case 'multiple':
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, true, $separator );
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a>';
-                    break;
-                case 'single':
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>';
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, false, $separator );
-                    $thelist .= "$category->name</a>";
-                    break;
-                case '':
-                default:
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a>';
+            }
-            ++$i;
+        }
+    }
-    /**
-     * Filter the category or list of categories.
+     *
-     * @since 1.2.0
+     *
-     * @param array  $thelist   List of categories for the current post.
-     * @param string $separator Separator used between the categories.
-     * @param string $parents   How to display the category parents. Accepts 'multiple',
-     *                          'single', or empty.
-     */
-    return apply_filters( 'the_category', $thelist, $separator, $parents );
+}
-/**
- * Check if the current post in within any of the given categories.
+ *
- * The given categories are checked against the post's categories' term_ids, names and slugs.
- * Categories given as integers will only be checked against the post's categories' term_ids.
+ *
- * Prior to v2.5 of WordPress, category names were not supported.
- * Prior to v2.7, category slugs were not supported.
- * Prior to v2.7, only one category could be compared: in_category( $single_category ).
- * Prior to v2.7, this function could only be used in the WordPress Loop.
- * As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
+ *
- * @since 1.2.0
+ *
- * @param int|string|array $category Category ID, name or slug, or array of said.
- * @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0)
- * @return bool True if the current post is in any of the given categories.
- */
-function in_category( $category, $post = null ) {
-    if ( empty( $category ) )
-        return false;
-    return has_category( $category, $post );
+}
-/**
- * Display the category list for the post.
+ *
- * @since 0.71
+ *
- * @param string $separator Optional, default is empty string. Separator for between the categories.
- * @param string $parents Optional. How to display the parents.
- * @param int $post_id Optional. Post ID to retrieve categories.
- */
-function the_category( $separator = '', $parents='', $post_id = false ) {
-    echo get_the_category_list( $separator, $parents, $post_id );
+}
-/**
- * Retrieve category description.
+ *
- * @since 1.0.0
+ *
- * @param int $category Optional. Category ID. Will use global category ID by default.
- * @return string Category description, available.
- */
-function category_description( $category = 0 ) {
-    return term_description( $category, 'category' );
+}
-/**
- * Display or retrieve the HTML dropdown list of categories.
+ *
- * The 'hierarchical' argument, which is disabled by default, will override the
- * depth argument, unless it is true. When the argument is false, it will
- * display all of the categories. When it is enabled it will use the value in
- * the 'depth' argument.
+ *
- * @since 2.1.0
- * @since 4.2.0 Introduced the `value_field` argument.
+ *
- * @param string|array $args {
- *     Optional. Array or string of arguments to generate a categories drop-down element.
+ *
- *     @type string       $show_option_all   Text to display for showing all categories. Default empty.
- *     @type string       $show_option_none  Text to display for showing no categories. Default empty.
- *     @type string       $option_none_value Value to use when no category is selected. Default empty.
- *     @type string       $orderby           Which column to use for ordering categories. See get_terms() for a list
- *                                           of accepted values. Default 'id' (term_id).
- *     @type string       $order             Whether to order terms in ascending or descending order. Accepts 'ASC'
- *                                           or 'DESC'. Default 'ASC'.
- *     @type bool         $pad_counts        See get_terms() for an argument description. Default false.
- *     @type bool|int     $show_count        Whether to include post counts. Accepts 0, 1, or their bool equivalents.
- *                                           Default 0.
- *     @type bool|int     $hide_empty        Whether to hide categories that don't have any posts. Accepts 0, 1, or
- *                                           their bool equivalents. Default 1.
- *     @type int          $child_of          Term ID to retrieve child terms of. See get_terms(). Default 0.
- *     @type array|string $exclude           Array or comma/space-separated string of term ids to exclude.
- *                                           If `$include` is non-empty, `$exclude` is ignored. Default empty array.
- *     @type bool|int     $echo              Whether to echo or return the generated markup. Accepts 0, 1, or their
- *                                           bool equivalents. Default 1.
- *     @type bool|int     $hierarchical      Whether to traverse the taxonomy hierarchy. Accepts 0, 1, or their bool
- *                                           equivalents. Default 0.
- *     @type int          $depth             Maximum depth. Default 0.
- *     @type int          $tab_index         Tab index for the select element. Default 0 (no tabindex).
- *     @type string       $name              Value for the 'name' attribute of the select element. Default 'cat'.
- *     @type string       $id                Value for the 'id' attribute of the select element. Defaults to the value
- *                                           of `$name`.
- *     @type string       $class             Value for the 'class' attribute of the select element. Default 'postform'.
- *     @type int|string   $selected          Value of the option that should be selected. Default 0.
- *     @type string       $value_field       Term field that should be used to populate the 'value' attribute
- *                                           of the option elements. Accepts any valid term field: 'term_id', 'name',
- *                                           'slug', 'term_group', 'term_taxonomy_id', 'taxonomy', 'description',
- *                                           'parent', 'count'. Default 'term_id'.
- *     @type string       $taxonomy          Name of the category to retrieve. Default 'category'.
- *     @type bool         $hide_if_empty     True to skip generating markup if no categories are found.
- *                                           Default false (create select element even if no categories are found).
- * }
- * @return string HTML content only if 'echo' argument is 0.
- */
-function wp_dropdown_categories( $args = '' ) {
-    $defaults = array(
-        'show_option_all' => '', 'show_option_none' => '',
-        'orderby' => 'id', 'order' => 'ASC',
-        'show_count' => 0,
-        'hide_empty' => 1, 'child_of' => 0,
-        'exclude' => '', 'echo' => 1,
-        'selected' => 0, 'hierarchical' => 0,
-        'name' => 'cat', 'id' => '',
-        'class' => 'postform', 'depth' => 0,
-        'tab_index' => 0, 'taxonomy' => 'category',
-        'hide_if_empty' => false, 'option_none_value' => -1,
-        'value_field' => 'term_id',
-    );
-    $defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0;
-    // Back compat.
-    if ( isset( $args['type'] ) && 'link' == $args['type'] ) {
-        _deprecated_argument( __FUNCTION__, '3.0', '' );
-        $args['taxonomy'] = 'link_category';
+    }
-    $r = wp_parse_args( $args, $defaults );
-    $option_none_value = $r['option_none_value'];
-    if ( ! isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) {
-        $r['pad_counts'] = true;
+    }
-    $tab_index = $r['tab_index'];
-    $tab_index_attribute = '';
-    if ( (int) $tab_index > 0 ) {
-        $tab_index_attribute = " tabindex=\"$tab_index\"";
+    }
-    // Avoid clashes with the 'name' param of get_terms().
-    $get_terms_args = $r;
-    unset( $get_terms_args['name'] );
-    $categories = get_terms( $r['taxonomy'], $get_terms_args );
-    $name = esc_attr( $r['name'] );
-    $class = esc_attr( $r['class'] );
-    $id = $r['id'] ? esc_attr( $r['id'] ) : $name;
-    if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
-        $output = "<select name='$name' id='$id' class='$class' $tab_index_attribute>\n";
-    } else {
-        $output = '';
+    }
-    if ( empty( $categories ) && ! $r['hide_if_empty'] && ! empty( $r['show_option_none'] ) ) {
-        /**
-         * Filter a taxonomy drop-down display element.
+         *
-         * A variety of taxonomy drop-down display elements can be modified
-         * just prior to display via this filter. Filterable arguments include
-         * 'show_option_none', 'show_option_all', and various forms of the
-         * term name.
+         *
-         * @since 1.2.0
+         *
-         * @see wp_dropdown_categories()
+         *
-         * @param string $element Taxonomy element to list.
-         */
-        $show_option_none = apply_filters( 'list_cats', $r['show_option_none'] );
-        $output .= "\t<option value='" . esc_attr( $option_none_value ) . "' selected='selected'>$show_option_none</option>\n";
+    }
-    if ( ! empty( $categories ) ) {
-        if ( $r['show_option_all'] ) {
-            /** This filter is documented in wp-includes/category-template.php */
-            $show_option_all = apply_filters( 'list_cats', $r['show_option_all'] );
-            $selected = ( '0' === strval($r['selected']) ) ? " selected='selected'" : '';
-            $output .= "\t<option value='0'$selected>$show_option_all</option>\n";
+        }
-        if ( $r['show_option_none'] ) {
-            /** This filter is documented in wp-includes/category-template.php */
-            $show_option_none = apply_filters( 'list_cats', $r['show_option_none'] );
-            $selected = selected( $option_none_value, $r['selected'], false );
-            $output .= "\t<option value='" . esc_attr( $option_none_value ) . "'$selected>$show_option_none</option>\n";
+        }
-        if ( $r['hierarchical'] ) {
-            $depth = $r['depth'];  // Walk the full depth.
-        } else {
-            $depth = -1; // Flat.
+        }
-        $output .= walk_category_dropdown_tree( $categories, $depth, $r );
+    }
-    if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
-        $output .= "</select>\n";
+    }
-    /**
-     * Filter the taxonomy drop-down output.
+     *
-     * @since 2.1.0
+     *
-     * @param string $output HTML output.
-     * @param array  $r      Arguments used to build the drop-down.
-     */
-    $output = apply_filters( 'wp_dropdown_cats', $output, $r );
-    if ( $r['echo'] ) {
-        echo $output;
+    }
-    return $output;
+}
-/**
- * Display or retrieve the HTML list of categories.
+ *
- * @since 2.1.0
- * @since 4.4.0 Introduced the `hide_title_if_empty` argument. The `current_category` argument was modified to
- *              optionally accept an array of values.
+ *
- * @param string|array $args {
- *     Array of optional arguments.
+ *
- *     @type string       $show_option_all       Text to display for showing all categories. Default empty string.
- *     @type string       $show_option_none      Text to display for the 'no categories' option.
- *                                               Default 'No categories'.
- *     @type string       $orderby               The column to use for ordering categories. Default 'ID'.
- *     @type string       $order                 Which direction to order categories. Accepts 'ASC' or 'DESC'.
- *                                               Default 'ASC'.
- *     @type bool|int     $show_count            Whether to show how many posts are in the category. Default 0.
- *     @type bool|int     $hide_empty            Whether to hide categories that don't have any posts attached to them.
- *                                               Default 1.
- *     @type bool|int     $use_desc_for_title    Whether to use the category description as the title attribute.
- *                                               Default 1.
- *     @type string       $feed                  Text to use for the feed link. Default 'Feed for all posts filed
- *                                               under [cat name]'.
- *     @type string       $feed_type             Feed type. Used to build feed link. See {@link get_term_feed_link()}.
- *                                               Default empty string (default feed).
- *     @type string       $feed_image            URL of an image to use for the feed link. Default empty string.
- *     @type int          $child_of              Term ID to retrieve child terms of. See {@link get_terms()}. Default 0.
- *     @type array|string $exclude               Array or comma/space-separated string of term IDs to exclude.
- *                                               See {@link get_terms()}. Default empty string.
- *     @type array|string $exclude_tree          Array or comma/space-separated string of term IDs to exclude, along
- *                                               with their descendants. See {@link get_terms()}. Default empty string.
- *     @type bool|int     $echo                  True to echo markup, false to return it. Default 1.
- *     @type int|array    $current_category      ID of category, or array of IDs of categories, that should get the
- *                                               'current-cat' class. Default 0.
- *     @type bool         $hierarchical          Whether to include terms that have non-empty descendants.
- *                                               See {@link get_terms()}. Default true.
- *     @type string       $title_li              Text to use for the list title `<li>` element. Pass an empty string
- *                                               to disable. Default 'Categories'.
- *     @type bool         $hide_title_if_empty   Whether to hide the `$title_li` element if there are no terms in
- *                                               the list. Default false (title will always be shown).
- *     @type int          $depth                 Category depth. Used for tab indentation. Default 0.
- *     @type string       $taxonomy              Taxonomy name. Default 'category'.
- * }
- * @return false|string HTML content only if 'echo' argument is 0.
- */
-function wp_list_categories( $args = '' ) {
-    $defaults = array(
-        'show_option_all' => '', 'show_option_none' => __('No categories'),
-        'orderby' => 'name', 'order' => 'ASC',
-        'style' => 'list',
-        'show_count' => 0, 'hide_empty' => 1,
-        'use_desc_for_title' => 1, 'child_of' => 0,
-        'feed' => '', 'feed_type' => '',
-        'feed_image' => '', 'exclude' => '',
-        'exclude_tree' => '', 'current_category' => 0,
-        'hierarchical' => true, 'title_li' => __( 'Categories' ),
-        'hide_title_if_empty' => false,
-        'echo' => 1, 'depth' => 0,
-        'taxonomy' => 'category'
-    );
-    $r = wp_parse_args( $args, $defaults );
-    if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] )
-        $r['pad_counts'] = true;
-    if ( true == $r['hierarchical'] ) {
-        $r['exclude_tree'] = $r['exclude'];
-        $r['exclude'] = '';
+    }
-    if ( ! isset( $r['class'] ) )
-        $r['class'] = ( 'category' == $r['taxonomy'] ) ? 'categories' : $r['taxonomy'];
-    if ( ! taxonomy_exists( $r['taxonomy'] ) ) {
-        return false;
+    }
-    $show_option_all = $r['show_option_all'];
-    $show_option_none = $r['show_option_none'];
-    $categories = get_categories( $r );
-    $output = '';
-    if ( $r['title_li'] && 'list' == $r['style'] && ( ! empty( $categories ) || ! $r['hide_title_if_empty'] ) ) {
-        $output = '<li class="' . esc_attr( $r['class'] ) . '">' . $r['title_li'] . '<ul>';
+    }
-    if ( empty( $categories ) ) {
-        if ( ! empty( $show_option_none ) ) {
-            if ( 'list' == $r['style'] ) {
-                $output .= '<li class="cat-item-none">' . $show_option_none . '</li>';
-            } else {
-                $output .= $show_option_none;
+            }
+        }
-    } else {
-        if ( ! empty( $show_option_all ) ) {
-            $posts_page = '';
-            // For taxonomies that belong only to custom post types, point to a valid archive.
-            $taxonomy_object = get_taxonomy( $r['taxonomy'] );
-            if ( ! in_array( 'post', $taxonomy_object->object_type ) && ! in_array( 'page', $taxonomy_object->object_type ) ) {
-                foreach ( $taxonomy_object->object_type as $object_type ) {
-                    $_object_type = get_post_type_object( $object_type );
-                    // Grab the first one.
-                    if ( ! empty( $_object_type->has_archive ) ) {
-                        $posts_page = get_post_type_archive_link( $object_type );
-                        break;
+                    }
+                }
+            }
-            // Fallback for the 'All' link is the front page.
-            if ( ! $posts_page ) {
-                $posts_page = 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ? get_permalink( get_option( 'page_for_posts' ) ) : home_url( '/' );
+            }
-            $posts_page = esc_url( $posts_page );
-            if ( 'list' == $r['style'] ) {
-                $output .= "<li class='cat-item-all'><a href='$posts_page'>$show_option_all</a></li>";
-            } else {
-                $output .= "<a href='$posts_page'>$show_option_all</a>";
+            }
+        }
-        if ( empty( $r['current_category'] ) && ( is_category() || is_tax() || is_tag() ) ) {
-            $current_term_object = get_queried_object();
-            if ( $current_term_object && $r['taxonomy'] === $current_term_object->taxonomy ) {
-                $r['current_category'] = get_queried_object_id();
+            }
+        }
-        if ( $r['hierarchical'] ) {
-            $depth = $r['depth'];
-        } else {
-            $depth = -1; // Flat.
+        }
-        $output .= walk_category_tree( $categories, $depth, $r );
+    }
-    if ( $r['title_li'] && 'list' == $r['style'] )
-        $output .= '</ul></li>';
-    /**
-     * Filter the HTML output of a taxonomy list.
+     *
-     * @since 2.1.0
+     *
-     * @param string $output HTML output.
-     * @param array  $args   An array of taxonomy-listing arguments.
-     */
-    $html = apply_filters( 'wp_list_categories', $output, $args );
-    if ( $r['echo'] ) {
-        echo $html;
-    } else {
-        return $html;
+    }
+}
-/**
- * Display tag cloud.
+ *
- * The text size is set by the 'smallest' and 'largest' arguments, which will
- * use the 'unit' argument value for the CSS text size unit. The 'format'
- * argument can be 'flat' (default), 'list', or 'array'. The flat value for the
- * 'format' argument will separate tags with spaces. The list value for the
- * 'format' argument will format the tags in a UL HTML list. The array value for
- * the 'format' argument will return in PHP array type format.
+ *
- * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
- * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC'.
+ *
- * The 'number' argument is how many tags to return. By default, the limit will
- * be to return the top 45 tags in the tag cloud list.
+ *
- * The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
- * text for the tooltip of the tag link.
+ *
- * The 'topic_count_text_callback' argument is a function, which given the count
- * of the posts with that tag returns a text for the tooltip of the tag link.
+ *
- * The 'post_type' argument is used only when 'link' is set to 'edit'. It determines the post_type
- * passed to edit.php for the popular tags edit links.
+ *
- * The 'exclude' and 'include' arguments are used for the {@link get_tags()}
- * function. Only one should be used, because only one will be used and the
- * other ignored, if they are both set.
+ *
- * @since 2.3.0
+ *
- * @param array|string|null $args Optional. Override default arguments.
- * @return void|array Generated tag cloud, only if no failures and 'array' is set for the 'format' argument.
- *                    Otherwise, this function outputs the tag cloud.
- */
-function wp_tag_cloud( $args = '' ) {
-    $defaults = array(
-        'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
-        'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC',
-        'exclude' => '', 'include' => '', 'link' => 'view', 'taxonomy' => 'post_tag', 'post_type' => '', 'echo' => true
-    );
-    $args = wp_parse_args( $args, $defaults );
-    $tags = get_terms( $args['taxonomy'], array_merge( $args, array( 'orderby' => 'count', 'order' => 'DESC' ) ) ); // Always query top tags
-    if ( empty( $tags ) || is_wp_error( $tags ) )
-        return;
-    foreach ( $tags as $key => $tag ) {
-        if ( 'edit' == $args['link'] )
-            $link = get_edit_term_link( $tag->term_id, $tag->taxonomy, $args['post_type'] );
-        else
-            $link = get_term_link( intval($tag->term_id), $tag->taxonomy );
-        if ( is_wp_error( $link ) )
-            return;
-        $tags[ $key ]->link = $link;
-        $tags[ $key ]->id = $tag->term_id;
+    }
-    $return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
-    /**
-     * Filter the tag cloud output.
+     *
-     * @since 2.3.0
+     *
-     * @param string $return HTML output of the tag cloud.
-     * @param array  $args   An array of tag cloud arguments.
-     */
-    $return = apply_filters( 'wp_tag_cloud', $return, $args );
-    if ( 'array' == $args['format'] || empty($args['echo']) )
-        return $return;
-    echo $return;
+}
-/**
- * Default topic count scaling for tag links
+ *
- * @param int $count number of posts with that tag
- * @return int scaled count
- */
-function default_topic_count_scale( $count ) {
-    return round(log10($count + 1) * 100);
+}
-/**
- * Generates a tag cloud (heatmap) from provided data.
+ *
- * The text size is set by the 'smallest' and 'largest' arguments, which will
- * use the 'unit' argument value for the CSS text size unit. The 'format'
- * argument can be 'flat' (default), 'list', or 'array'. The flat value for the
- * 'format' argument will separate tags with spaces. The list value for the
- * 'format' argument will format the tags in a UL HTML list. The array value for
- * the 'format' argument will return in PHP array type format.
+ *
- * The 'tag_cloud_sort' filter allows you to override the sorting.
- * Passed to the filter: $tags array and $args array, has to return the $tags array
- * after sorting it.
+ *
- * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
- * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC' or
- * 'RAND'.
+ *
- * The 'number' argument is how many tags to return. By default, the limit will
- * be to return the entire tag cloud list.
+ *
- * The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
- * text for the tooltip of the tag link.
+ *
- * The 'topic_count_text_callback' argument is a function, which given the count
- * of the posts with that tag returns a text for the tooltip of the tag link.
+ *
- * @todo Complete functionality.
- * @since 2.3.0
+ *
- * @param array $tags List of tags.
- * @param string|array $args Optional, override default arguments.
- * @return string|array Tag cloud as a string or an array, depending on 'format' argument.
- */
-function wp_generate_tag_cloud( $tags, $args = '' ) {
-    $defaults = array(
-        'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 0,
-        'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC',
-        'topic_count_text' => null, 'topic_count_text_callback' => null,
-        'topic_count_scale_callback' => 'default_topic_count_scale', 'filter' => 1,
-    );
-    $args = wp_parse_args( $args, $defaults );
-    $return = ( 'array' === $args['format'] ) ? array() : '';
-    if ( empty( $tags ) ) {
-        return $return;
+    }
-    // Juggle topic count tooltips:
-    if ( isset( $args['topic_count_text'] ) ) {
-        // First look for nooped plural support via topic_count_text.
-        $translate_nooped_plural = $args['topic_count_text'];
-    } elseif ( ! empty( $args['topic_count_text_callback'] ) ) {
-        // Look for the alternative callback style. Ignore the previous default.
-        if ( $args['topic_count_text_callback'] === 'default_topic_count_text' ) {
-            $translate_nooped_plural = _n_noop( '%s topic', '%s topics' );
-        } else {
-            $translate_nooped_plural = false;
+        }
-    } elseif ( isset( $args['single_text'] ) && isset( $args['multiple_text'] ) ) {
-        // If no callback exists, look for the old-style single_text and multiple_text arguments.
-        $translate_nooped_plural = _n_noop( $args['single_text'], $args['multiple_text'] );
-    } else {
-        // This is the default for when no callback, plural, or argument is passed in.
-        $translate_nooped_plural = _n_noop( '%s topic', '%s topics' );
+    }
-    /**
-     * Filter how the items in a tag cloud are sorted.
+     *
-     * @since 2.8.0
+     *
-     * @param array $tags Ordered array of terms.
-     * @param array $args An array of tag cloud arguments.
-     */
-    $tags_sorted = apply_filters( 'tag_cloud_sort', $tags, $args );
-    if ( empty( $tags_sorted ) ) {
-        return $return;
+    }
-    if ( $tags_sorted !== $tags ) {
-        $tags = $tags_sorted;
-        unset( $tags_sorted );
-    } else {
-        if ( 'RAND' === $args['order'] ) {
-            shuffle( $tags );
-        } else {
-            // SQL cannot save you; this is a second (potentially different) sort on a subset of data.
-            if ( 'name' === $args['orderby'] ) {
-                uasort( $tags, '_wp_object_name_sort_cb' );
-            } else {
-                uasort( $tags, '_wp_object_count_sort_cb' );
+            }
-            if ( 'DESC' === $args['order'] ) {
-                $tags = array_reverse( $tags, true );
+            }
+        }
+    }
-    if ( $args['number'] > 0 )
-        $tags = array_slice( $tags, 0, $args['number'] );
-    $counts = array();
-    $real_counts = array(); // For the alt tag
-    foreach ( (array) $tags as $key => $tag ) {
-        $real_counts[ $key ] = $tag->count;
-        $counts[ $key ] = call_user_func( $args['topic_count_scale_callback'], $tag->count );
+    }
-    $min_count = min( $counts );
-    $spread = max( $counts ) - $min_count;
-    if ( $spread <= 0 )
-        $spread = 1;
-    $font_spread = $args['largest'] - $args['smallest'];
-    if ( $font_spread < 0 )
-        $font_spread = 1;
-    $font_step = $font_spread / $spread;
-    // Assemble the data that will be used to generate the tag cloud markup.
-    $tags_data = array();
-    foreach ( $tags as $key => $tag ) {
-        $tag_id = isset( $tag->id ) ? $tag->id : $key;
-        $count = $counts[ $key ];
-        $real_count = $real_counts[ $key ];
-        if ( $translate_nooped_plural ) {
-            $title = sprintf( translate_nooped_plural( $translate_nooped_plural, $real_count ), number_format_i18n( $real_count ) );
-        } else {
-            $title = call_user_func( $args['topic_count_text_callback'], $real_count, $tag, $args );
+        }
-        $tags_data[] = array(
-            'id'         => $tag_id,
-            'url'        => '#' != $tag->link ? $tag->link : '#',
-            'name'       => $tag->name,
-            'title'      => $title,
-            'slug'       => $tag->slug,
-            'real_count' => $real_count,
-            'class'      => 'tag-link-' . $tag_id,
-            'font_size'  => $args['smallest'] + ( $count - $min_count ) * $font_step,
-        );
+    }
-    /**
-     * Filter the data used to generate the tag cloud.
+     *
-     * @since 4.3.0
+     *
-     * @param array $tags_data An array of term data for term used to generate the tag cloud.
-     */
-    $tags_data = apply_filters( 'wp_generate_tag_cloud_data', $tags_data );
-    $a = array();
-    // generate the output links array
-    foreach ( $tags_data as $key => $tag_data ) {
-        $a[] = "<a href='" . esc_url( $tag_data['url'] ) . "' class='" . esc_attr( $tag_data['class'] ) . "' title='" . esc_attr( $tag_data['title'] ) . "' style='font-size: " . esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ) . ";'>" . esc_html( $tag_data['name'] ) . "</a>";
+    }
-    switch ( $args['format'] ) {
-        case 'array' :
-            $return =& $a;
-            break;
-        case 'list' :
-            $return = "<ul class='wp-tag-cloud'>\n\t<li>";
-            $return .= join( "</li>\n\t<li>", $a );
-            $return .= "</li>\n</ul>\n";
-            break;
-        default :
-            $return = join( $args['separator'], $a );
-            break;
+    }
-    if ( $args['filter'] ) {
-        /**
-         * Filter the generated output of a tag cloud.
+         *
-         * The filter is only evaluated if a true value is passed
-         * to the $filter argument in wp_generate_tag_cloud().
+         *
-         * @since 2.3.0
+         *
-         * @see wp_generate_tag_cloud()
+         *
-         * @param array|string $return String containing the generated HTML tag cloud output
-         *                             or an array of tag links if the 'format' argument
-         *                             equals 'array'.
-         * @param array        $tags   An array of terms used in the tag cloud.
-         * @param array        $args   An array of wp_generate_tag_cloud() arguments.
-         */
-        return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
+    }
-    else
-        return $return;
+}
-/**
- * Callback for comparing objects based on name
+ *
- * @since 3.1.0
- * @access private
- * @return int
- */
-function _wp_object_name_sort_cb( $a, $b ) {
-    return strnatcasecmp( $a->name, $b->name );
+}
-/**
- * Callback for comparing objects based on count
+ *
- * @since 3.1.0
- * @access private
- * @return bool
- */
-function _wp_object_count_sort_cb( $a, $b ) {
-    return ( $a->count > $b->count );
+}
-//
-// Helper functions
-//
-/**
- * Retrieve HTML list content for category list.
+ *
- * @uses Walker_Category to create HTML list content.
- * @since 2.1.0
- * @see Walker_Category::walk() for parameters and return description.
- * @return string
- */
-function walk_category_tree() {
-    $args = func_get_args();
-    // the user's options are the third parameter
-    if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
-        $walker = new Walker_Category;
-    } else {
-        $walker = $args[2]['walker'];
+    }
-    return call_user_func_array( array( $walker, 'walk' ), $args );
+}
-/**
- * Retrieve HTML dropdown (select) content for category list.
+ *
- * @uses Walker_CategoryDropdown to create HTML dropdown content.
- * @since 2.1.0
- * @see Walker_CategoryDropdown::walk() for parameters and return description.
- * @return string
- */
-function walk_category_dropdown_tree() {
-    $args = func_get_args();
-    // the user's options are the third parameter
-    if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
-        $walker = new Walker_CategoryDropdown;
-    } else {
-        $walker = $args[2]['walker'];
+    }
-    return call_user_func_array( array( $walker, 'walk' ), $args );
+}
-/**
- * Create HTML list of categories.
+ *
- * @package WordPress
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_Category extends Walker {
-    /**
-     * What the class handles.
+     *
-     * @see Walker::$tree_type
-     * @since 2.1.0
-     * @var string
-     */
-    public $tree_type = 'category';
-    /**
-     * Database fields to use.
+     *
-     * @see Walker::$db_fields
-     * @since 2.1.0
-     * @todo Decouple this
-     * @var array
-     */
-    public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
-    /**
-     * Starts the list before the elements are added.
+     *
-     * @see Walker::start_lvl()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output Passed by reference. Used to append additional content.
-     * @param int    $depth  Depth of category. Used for tab indentation.
-     * @param array  $args   An array of arguments. Will only append content if style argument value is 'list'.
-     *                       @see wp_list_categories()
-     */
-    public function start_lvl( &$output, $depth = 0, $args = array() ) {
-        if ( 'list' != $args['style'] )
-            return;
-        $indent = str_repeat("\t", $depth);
-        $output .= "$indent<ul class='children'>\n";
+    }
-    /**
-     * Ends the list of after the elements are added.
+     *
-     * @see Walker::end_lvl()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output Passed by reference. Used to append additional content.
-     * @param int    $depth  Depth of category. Used for tab indentation.
-     * @param array  $args   An array of arguments. Will only append content if style argument value is 'list'.
-     *                       @wsee wp_list_categories()
-     */
-    public function end_lvl( &$output, $depth = 0, $args = array() ) {
-        if ( 'list' != $args['style'] )
-            return;
-        $indent = str_repeat("\t", $depth);
-        $output .= "$indent</ul>\n";
+    }
-    /**
-     * Start the element output.
+     *
-     * @see Walker::start_el()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output   Passed by reference. Used to append additional content.
-     * @param object $category Category data object.
-     * @param int    $depth    Depth of category in reference to parents. Default 0.
-     * @param array  $args     An array of arguments. @see wp_list_categories()
-     * @param int    $id       ID of the current category.
-     */
-    public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
-        /** This filter is documented in wp-includes/category-template.php */
-        $cat_name = apply_filters(
-            'list_cats',
-            esc_attr( $category->name ),
-            $category
-        );
-        // Don't generate an element if the category name is empty.
-        if ( ! $cat_name ) {
-            return;
+        }
-        $link = '<a href="' . esc_url( get_term_link( $category ) ) . '" ';
-        if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) {
-            /**
-             * Filter the category description for display.
+             *
-             * @since 1.2.0
+             *
-             * @param string $description Category description.
-             * @param object $category    Category object.
-             */
-            $link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
+        }
-        $link .= '>';
-        $link .= $cat_name . '</a>';
-        if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
-            $link .= ' ';
-            if ( empty( $args['feed_image'] ) ) {
-                $link .= '(';
+            }
-            $link .= '<a href="' . esc_url( get_term_feed_link( $category->term_id, $category->taxonomy, $args['feed_type'] ) ) . '"';
-            if ( empty( $args['feed'] ) ) {
-                $alt = ' alt="' . sprintf(__( 'Feed for all posts filed under %s' ), $cat_name ) . '"';
-            } else {
-                $alt = ' alt="' . $args['feed'] . '"';
-                $name = $args['feed'];
-                $link .= empty( $args['title'] ) ? '' : $args['title'];
+            }
-            $link .= '>';
-            if ( empty( $args['feed_image'] ) ) {
-                $link .= $name;
-            } else {
-                $link .= "<img src='" . $args['feed_image'] . "'$alt" . ' />';
+            }
-            $link .= '</a>';
-            if ( empty( $args['feed_image'] ) ) {
-                $link .= ')';
+            }
+        }
-        if ( ! empty( $args['show_count'] ) ) {
-            $link .= ' (' . number_format_i18n( $category->count ) . ')';
+        }
-        if ( 'list' == $args['style'] ) {
-            $output .= "\t<li";
-            $css_classes = array(
-                'cat-item',
-                'cat-item-' . $category->term_id,
-            );
-            if ( ! empty( $args['current_category'] ) ) {
-                // 'current_category' can be an array, so we use `get_terms()`.
-                $_current_terms = get_terms( $category->taxonomy, array(
-                    'include' => $args['current_category'],
-                    'hide_empty' => false,
-                ) );
-                foreach ( $_current_terms as $_current_term ) {
-                    if ( $category->term_id == $_current_term->term_id ) {
-                        $css_classes[] = 'current-cat';
-                    } elseif ( $category->term_id == $_current_term->parent ) {
-                        $css_classes[] = 'current-cat-parent';
+                    }
+                }
+            }
-            /**
-             * Filter the list of CSS classes to include with each category in the list.
+             *
-             * @since 4.2.0
+             *
-             * @see wp_list_categories()
+             *
-             * @param array  $css_classes An array of CSS classes to be applied to each list item.
-             * @param object $category    Category data object.
-             * @param int    $depth       Depth of page, used for padding.
-             * @param array  $args        An array of wp_list_categories() arguments.
-             */
-            $css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) );
-            $output .=  ' class="' . $css_classes . '"';
-            $output .= ">$link\n";
-        } else {
-            $output .= "\t$link<br />\n";
+        }
+    }
-    /**
-     * Ends the element output, if needed.
+     *
-     * @see Walker::end_el()
+     *
-     * @since 2.1.0
+     *
-     * @param string $output Passed by reference. Used to append additional content.
-     * @param object $page   Not used.
-     * @param int    $depth  Depth of category. Not used.
-     * @param array  $args   An array of arguments. Only uses 'list' for whether should append to output. @see wp_list_categories()
-     */
-    public function end_el( &$output, $page, $depth = 0, $args = array() ) {
-        if ( 'list' != $args['style'] )
-            return;
-        $output .= "</li>\n";
+    }
+}
 /**
 …
+    }
+}
-//
-// Tags
-//
-/**
- * Retrieve the link to the tag.
+ *
- * @since 2.3.0
- * @see get_term_link()
+ *
- * @param int|object $tag Tag ID or object.
- * @return string Link on success, empty string if tag does not exist.
- */
-function get_tag_link( $tag ) {
-    if ( ! is_object( $tag ) )
-        $tag = (int) $tag;
-    $tag = get_term_link( $tag, 'post_tag' );
-    if ( is_wp_error( $tag ) )
-        return '';
-    return $tag;
+}
-/**
- * Retrieve the tags for a post.
+ *
- * @since 2.3.0
+ *
- * @param int $id Post ID.
- * @return array|false|WP_Error Array of tag objects on success, false on failure.
- */
-function get_the_tags( $id = 0 ) {
-    /**
-     * Filter the array of tags for the given post.
+     *
-     * @since 2.3.0
+     *
-     * @see get_the_terms()
+     *
-     * @param array $terms An array of tags for the given post.
-     */
-    return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) );
+}
-/**
- * Retrieve the tags for a post formatted as a string.
+ *
- * @since 2.3.0
+ *
- * @param string $before Optional. Before tags.
- * @param string $sep Optional. Between tags.
- * @param string $after Optional. After tags.
- * @param int $id Optional. Post ID. Defaults to the current post.
- * @return string|false|WP_Error A list of tags on success, false if there are no terms, WP_Error on failure.
- */
-function get_the_tag_list( $before = '', $sep = '', $after = '', $id = 0 ) {
-    /**
-     * Filter the tags list for a given post.
+     *
-     * @since 2.3.0
+     *
-     * @param string $tag_list List of tags.
-     * @param string $before   String to use before tags.
-     * @param string $sep      String to use between the tags.
-     * @param string $after    String to use after tags.
-     * @param int    $id       Post ID.
-     */
-    return apply_filters( 'the_tags', get_the_term_list( $id, 'post_tag', $before, $sep, $after ), $before, $sep, $after, $id );
+}
-/**
- * Retrieve the tags for a post.
+ *
- * @since 2.3.0
+ *
- * @param string $before Optional. Before list.
- * @param string $sep Optional. Separate items using this.
- * @param string $after Optional. After list.
- */
-function the_tags( $before = null, $sep = ', ', $after = '' ) {
-    if ( null === $before )
-        $before = __('Tags: ');
-    echo get_the_tag_list($before, $sep, $after);
+}
-/**
- * Retrieve tag description.
+ *
- * @since 2.8.0
+ *
- * @param int $tag Optional. Tag ID. Will use global tag ID by default.
- * @return string Tag description, available.
- */
-function tag_description( $tag = 0 ) {
-    return term_description( $tag );
+}
-/**
- * Retrieve term description.
+ *
- * @since 2.8.0
+ *
- * @param int $term Optional. Term ID. Will use global term ID by default.
- * @param string $taxonomy Optional taxonomy name. Defaults to 'post_tag'.
- * @return string Term description, available.
- */
-function term_description( $term = 0, $taxonomy = 'post_tag' ) {
-    if ( ! $term && ( is_tax() || is_tag() || is_category() ) ) {
-        $term = get_queried_object();
-        if ( $term ) {
-            $taxonomy = $term->taxonomy;
-            $term = $term->term_id;
+        }
+    }
-    $description = get_term_field( 'description', $term, $taxonomy );
-    return is_wp_error( $description ) ? '' : $description;
+}
-/**
- * Retrieve the terms of the taxonomy that are attached to the post.
+ *
- * @since 2.5.0
+ *
- * @param int|object $post Post ID or object.
- * @param string $taxonomy Taxonomy name.
- * @return array|false|WP_Error Array of term objects on success, false if there are no terms
- *                              or the post does not exist, WP_Error on failure.
- */
-function get_the_terms( $post, $taxonomy ) {
-    if ( ! $post = get_post( $post ) )
-        return false;
-    $terms = get_object_term_cache( $post->ID, $taxonomy );
-    if ( false === $terms ) {
-        $terms = wp_get_object_terms( $post->ID, $taxonomy );
-        wp_cache_add($post->ID, $terms, $taxonomy . '_relationships');
+    }
-    /**
-     * Filter the list of terms attached to the given post.
+     *
-     * @since 3.1.0
+     *
-     * @param array|WP_Error $terms    List of attached terms, or WP_Error on failure.
-     * @param int            $post_id  Post ID.
-     * @param string         $taxonomy Name of the taxonomy.
-     */
-    $terms = apply_filters( 'get_the_terms', $terms, $post->ID, $taxonomy );
-    if ( empty( $terms ) )
-        return false;
-    return $terms;
+}
-/**
- * Retrieve a post's terms as a list with specified format.
+ *
- * @since 2.5.0
+ *
- * @param int $id Post ID.
- * @param string $taxonomy Taxonomy name.
- * @param string $before Optional. Before list.
- * @param string $sep Optional. Separate items using this.
- * @param string $after Optional. After list.
- * @return string|false|WP_Error A list of terms on success, false if there are no terms, WP_Error on failure.
- */
-function get_the_term_list( $id, $taxonomy, $before = '', $sep = '', $after = '' ) {
-    $terms = get_the_terms( $id, $taxonomy );
-    if ( is_wp_error( $terms ) )
-        return $terms;
-    if ( empty( $terms ) )
-        return false;
-    $links = array();
-    foreach ( $terms as $term ) {
-        $link = get_term_link( $term, $taxonomy );
-        if ( is_wp_error( $link ) ) {
-            return $link;
+        }
-        $links[] = '<a href="' . esc_url( $link ) . '" rel="tag">' . $term->name . '</a>';
+    }
-    /**
-     * Filter the term links for a given taxonomy.
+     *
-     * The dynamic portion of the filter name, `$taxonomy`, refers
-     * to the taxonomy slug.
+     *
-     * @since 2.5.0
+     *
-     * @param array $links An array of term links.
-     */
-    $term_links = apply_filters( "term_links-$taxonomy", $links );
-    return $before . join( $sep, $term_links ) . $after;
+}
-/**
- * Display the terms in a list.
+ *
- * @since 2.5.0
+ *
- * @param int $id Post ID.
- * @param string $taxonomy Taxonomy name.
- * @param string $before Optional. Before list.
- * @param string $sep Optional. Separate items using this.
- * @param string $after Optional. After list.
- * @return false|void False on WordPress error.
- */
-function the_terms( $id, $taxonomy, $before = '', $sep = ', ', $after = '' ) {
-    $term_list = get_the_term_list( $id, $taxonomy, $before, $sep, $after );
-    if ( is_wp_error( $term_list ) )
-        return false;
-    /**
-     * Filter the list of terms to display.
+     *
-     * @since 2.9.0
+     *
-     * @param array  $term_list List of terms to display.
-     * @param string $taxonomy  The taxonomy name.
-     * @param string $before    String to use before the terms.
-     * @param string $sep       String to use between the terms.
-     * @param string $after     String to use after the terms.
-     */
-    echo apply_filters( 'the_terms', $term_list, $taxonomy, $before, $sep, $after );
+}
-/**
- * Check if the current post has any of given category.
+ *
- * @since 3.1.0
+ *
- * @param string|int|array $category Optional. The category name/term_id/slug or array of them to check for.
- * @param int|object $post Optional. Post to check instead of the current post.
- * @return bool True if the current post has any of the given categories (or any category, if no category specified).
- */
-function has_category( $category = '', $post = null ) {
-    return has_term( $category, 'category', $post );
+}
-/**
- * Check if the current post has any of given tags.
+ *
- * The given tags are checked against the post's tags' term_ids, names and slugs.
- * Tags given as integers will only be checked against the post's tags' term_ids.
- * If no tags are given, determines if post has any tags.
+ *
- * Prior to v2.7 of WordPress, tags given as integers would also be checked against the post's tags' names and slugs (in addition to term_ids)
- * Prior to v2.7, this function could only be used in the WordPress Loop.
- * As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
+ *
- * @since 2.6.0
+ *
- * @param string|int|array $tag Optional. The tag name/term_id/slug or array of them to check for.
- * @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0)
- * @return bool True if the current post has any of the given tags (or any tag, if no tag specified).
- */
-function has_tag( $tag = '', $post = null ) {
-    return has_term( $tag, 'post_tag', $post );
+}
-/**
- * Check if the current post has any of given terms.
+ *
- * The given terms are checked against the post's terms' term_ids, names and slugs.
- * Terms given as integers will only be checked against the post's terms' term_ids.
- * If no terms are given, determines if post has any terms.
+ *
- * @since 3.1.0
+ *
- * @param string|int|array $term Optional. The term name/term_id/slug or array of them to check for.
- * @param string $taxonomy Taxonomy name
- * @param int|object $post Optional. Post to check instead of the current post.
- * @return bool True if the current post has any of the given tags (or any tag, if no tag specified).
- */
-function has_term( $term = '', $taxonomy = '', $post = null ) {
-    $post = get_post($post);
-    if ( !$post )
-        return false;
-    $r = is_object_in_term( $post->ID, $taxonomy, $term );
-    if ( is_wp_error( $r ) )
-        return false;
-    return $r;
+}

trunk/src/wp-includes/class-walker-category.php

-                      r34109
+                      r34110
 <?php
 /**
  * Category Template Tags and API.
+ * Category API: Walker_Category class
+ *
  * @package WordPress
  * @subpackage Template
  */
-/**
- * Retrieve category link URL.
+ *
- * @since 1.0.0
- * @see get_term_link()
+ *
- * @param int|object $category Category ID or object.
- * @return string Link on success, empty string if category does not exist.
- */
-function get_category_link( $category ) {
-    if ( ! is_object( $category ) )
-        $category = (int) $category;
-    $category = get_term_link( $category, 'category' );
-    if ( is_wp_error( $category ) )
-        return '';
-    return $category;
+}
-/**
- * Retrieve category parents with separator.
+ *
- * @since 1.2.0
+ *
- * @param int $id Category ID.
- * @param bool $link Optional, default is false. Whether to format with link.
- * @param string $separator Optional, default is '/'. How to separate categories.
- * @param bool $nicename Optional, default is false. Whether to use nice name for display.
- * @param array $visited Optional. Already linked to categories to prevent duplicates.
- * @return string|WP_Error A list of category parents on success, WP_Error on failure.
- */
-function get_category_parents( $id, $link = false, $separator = '/', $nicename = false, $visited = array() ) {
-    $chain = '';
-    $parent = get_term( $id, 'category' );
-    if ( is_wp_error( $parent ) )
-        return $parent;
-    if ( $nicename )
-        $name = $parent->slug;
-    else
-        $name = $parent->name;
-    if ( $parent->parent && ( $parent->parent != $parent->term_id ) && !in_array( $parent->parent, $visited ) ) {
-        $visited[] = $parent->parent;
-        $chain .= get_category_parents( $parent->parent, $link, $separator, $nicename, $visited );
+    }
-    if ( $link )
-        $chain .= '<a href="' . esc_url( get_category_link( $parent->term_id ) ) . '">'.$name.'</a>' . $separator;
-    else
-        $chain .= $name.$separator;
-    return $chain;
+}
-/**
- * Retrieve post categories.
+ *
- * This tag may be used outside The Loop by passing a post id as the parameter.
+ *
- * Note: This function only returns results from the default "category" taxonomy.
- * For custom taxonomies use get_the_terms().
+ *
- * @since 0.71
+ *
- * @param int $id Optional, default to current post ID. The post ID.
- * @return array Array of objects, one for each category assigned to the post.
- */
-function get_the_category( $id = false ) {
-    $categories = get_the_terms( $id, 'category' );
-    if ( ! $categories || is_wp_error( $categories ) )
-        $categories = array();
-    $categories = array_values( $categories );
-    foreach ( array_keys( $categories ) as $key ) {
-        _make_cat_compat( $categories[$key] );
+    }
-    /**
-     * Filter the array of categories to return for a post.
+     *
-     * @since 3.1.0
+     *
-     * @param array $categories An array of categories to return for the post.
-     */
-    return apply_filters( 'get_the_categories', $categories );
+}
-/**
- * Sort categories by name.
+ *
- * Used by usort() as a callback, should not be used directly. Can actually be
- * used to sort any term object.
+ *
- * @since 2.3.0
- * @access private
+ *
- * @param object $a
- * @param object $b
- * @return int
- */
-function _usort_terms_by_name( $a, $b ) {
-    return strcmp( $a->name, $b->name );
+}
-/**
- * Sort categories by ID.
+ *
- * Used by usort() as a callback, should not be used directly. Can actually be
- * used to sort any term object.
+ *
- * @since 2.3.0
- * @access private
+ *
- * @param object $a
- * @param object $b
- * @return int
- */
-function _usort_terms_by_ID( $a, $b ) {
-    if ( $a->term_id > $b->term_id )
-        return 1;
-    elseif ( $a->term_id < $b->term_id )
-        return -1;
-    else
-        return 0;
+}
-/**
- * Retrieve category name based on category ID.
+ *
- * @since 0.71
+ *
- * @param int $cat_ID Category ID.
- * @return string|WP_Error Category name on success, WP_Error on failure.
- */
-function get_the_category_by_ID( $cat_ID ) {
-    $cat_ID = (int) $cat_ID;
-    $category = get_term( $cat_ID, 'category' );
-    if ( is_wp_error( $category ) )
-        return $category;
-    return ( $category ) ? $category->name : '';
+}
-/**
- * Retrieve category list in either HTML list or custom format.
+ *
- * @since 1.5.1
+ *
- * @global WP_Rewrite $wp_rewrite
+ *
- * @param string $separator Optional, default is empty string. Separator for between the categories.
- * @param string $parents Optional. How to display the parents.
- * @param int $post_id Optional. Post ID to retrieve categories.
- * @return string
- */
-function get_the_category_list( $separator = '', $parents='', $post_id = false ) {
-    global $wp_rewrite;
-    if ( ! is_object_in_taxonomy( get_post_type( $post_id ), 'category' ) ) {
-        /** This filter is documented in wp-includes/category-template.php */
-        return apply_filters( 'the_category', '', $separator, $parents );
+    }
-    $categories = get_the_category( $post_id );
-    if ( empty( $categories ) ) {
-        /** This filter is documented in wp-includes/category-template.php */
-        return apply_filters( 'the_category', __( 'Uncategorized' ), $separator, $parents );
+    }
-    $rel = ( is_object( $wp_rewrite ) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"';
-    $thelist = '';
-    if ( '' == $separator ) {
-        $thelist .= '<ul class="post-categories">';
-        foreach ( $categories as $category ) {
-            $thelist .= "\n\t<li>";
-            switch ( strtolower( $parents ) ) {
-                case 'multiple':
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, true, $separator );
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a></li>';
-                    break;
-                case 'single':
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '"  ' . $rel . '>';
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, false, $separator );
-                    $thelist .= $category->name.'</a></li>';
-                    break;
-                case '':
-                default:
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a></li>';
+            }
+        }
-        $thelist .= '</ul>';
-    } else {
-        $i = 0;
-        foreach ( $categories as $category ) {
-            if ( 0 < $i )
-                $thelist .= $separator;
-            switch ( strtolower( $parents ) ) {
-                case 'multiple':
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, true, $separator );
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a>';
-                    break;
-                case 'single':
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>';
-                    if ( $category->parent )
-                        $thelist .= get_category_parents( $category->parent, false, $separator );
-                    $thelist .= "$category->name</a>";
-                    break;
-                case '':
-                default:
-                    $thelist .= '<a href="' . esc_url( get_category_link( $category->term_id ) ) . '" ' . $rel . '>' . $category->name.'</a>';
+            }
-            ++$i;
+        }
+    }
-    /**
-     * Filter the category or list of categories.
+     *
-     * @since 1.2.0
+     *
-     * @param array  $thelist   List of categories for the current post.
-     * @param string $separator Separator used between the categories.
-     * @param string $parents   How to display the category parents. Accepts 'multiple',
-     *                          'single', or empty.
-     */
-    return apply_filters( 'the_category', $thelist, $separator, $parents );
+}
-/**
- * Check if the current post in within any of the given categories.
+ *
- * The given categories are checked against the post's categories' term_ids, names and slugs.
- * Categories given as integers will only be checked against the post's categories' term_ids.
+ *
- * Prior to v2.5 of WordPress, category names were not supported.
- * Prior to v2.7, category slugs were not supported.
- * Prior to v2.7, only one category could be compared: in_category( $single_category ).
- * Prior to v2.7, this function could only be used in the WordPress Loop.
- * As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
+ *
- * @since 1.2.0
+ *
- * @param int|string|array $category Category ID, name or slug, or array of said.
- * @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0)
- * @return bool True if the current post is in any of the given categories.
- */
-function in_category( $category, $post = null ) {
-    if ( empty( $category ) )
-        return false;
-    return has_category( $category, $post );
+}
-/**
- * Display the category list for the post.
+ *
- * @since 0.71
+ *
- * @param string $separator Optional, default is empty string. Separator for between the categories.
- * @param string $parents Optional. How to display the parents.
- * @param int $post_id Optional. Post ID to retrieve categories.
- */
-function the_category( $separator = '', $parents='', $post_id = false ) {
-    echo get_the_category_list( $separator, $parents, $post_id );
+}
-/**
- * Retrieve category description.
+ *
- * @since 1.0.0
+ *
- * @param int $category Optional. Category ID. Will use global category ID by default.
- * @return string Category description, available.
- */
-function category_description( $category = 0 ) {
-    return term_description( $category, 'category' );
+}
-/**
- * Display or retrieve the HTML dropdown list of categories.
+ *
- * The 'hierarchical' argument, which is disabled by default, will override the
- * depth argument, unless it is true. When the argument is false, it will
- * display all of the categories. When it is enabled it will use the value in
- * the 'depth' argument.
+ *
- * @since 2.1.0
- * @since 4.2.0 Introduced the `value_field` argument.
+ *
- * @param string|array $args {
- *     Optional. Array or string of arguments to generate a categories drop-down element.
+ *
- *     @type string       $show_option_all   Text to display for showing all categories. Default empty.
- *     @type string       $show_option_none  Text to display for showing no categories. Default empty.
- *     @type string       $option_none_value Value to use when no category is selected. Default empty.
- *     @type string       $orderby           Which column to use for ordering categories. See get_terms() for a list
- *                                           of accepted values. Default 'id' (term_id).
- *     @type string       $order             Whether to order terms in ascending or descending order. Accepts 'ASC'
- *                                           or 'DESC'. Default 'ASC'.
- *     @type bool         $pad_counts        See get_terms() for an argument description. Default false.
- *     @type bool|int     $show_count        Whether to include post counts. Accepts 0, 1, or their bool equivalents.
- *                                           Default 0.
- *     @type bool|int     $hide_empty        Whether to hide categories that don't have any posts. Accepts 0, 1, or
- *                                           their bool equivalents. Default 1.
- *     @type int          $child_of          Term ID to retrieve child terms of. See get_terms(). Default 0.
- *     @type array|string $exclude           Array or comma/space-separated string of term ids to exclude.
- *                                           If `$include` is non-empty, `$exclude` is ignored. Default empty array.
- *     @type bool|int     $echo              Whether to echo or return the generated markup. Accepts 0, 1, or their
- *                                           bool equivalents. Default 1.
- *     @type bool|int     $hierarchical      Whether to traverse the taxonomy hierarchy. Accepts 0, 1, or their bool
- *                                           equivalents. Default 0.
- *     @type int          $depth             Maximum depth. Default 0.
- *     @type int          $tab_index         Tab index for the select element. Default 0 (no tabindex).
- *     @type string       $name              Value for the 'name' attribute of the select element. Default 'cat'.
- *     @type string       $id                Value for the 'id' attribute of the select element. Defaults to the value
- *                                           of `$name`.
- *     @type string       $class             Value for the 'class' attribute of the select element. Default 'postform'.
- *     @type int|string   $selected          Value of the option that should be selected. Default 0.
- *     @type string       $value_field       Term field that should be used to populate the 'value' attribute
- *                                           of the option elements. Accepts any valid term field: 'term_id', 'name',
- *                                           'slug', 'term_group', 'term_taxonomy_id', 'taxonomy', 'description',
- *                                           'parent', 'count'. Default 'term_id'.
- *     @type string       $taxonomy          Name of the category to retrieve. Default 'category'.
- *     @type bool         $hide_if_empty     True to skip generating markup if no categories are found.
- *                                           Default false (create select element even if no categories are found).
- * }
- * @return string HTML content only if 'echo' argument is 0.
- */
-function wp_dropdown_categories( $args = '' ) {
-    $defaults = array(
-        'show_option_all' => '', 'show_option_none' => '',
-        'orderby' => 'id', 'order' => 'ASC',
-        'show_count' => 0,
-        'hide_empty' => 1, 'child_of' => 0,
-        'exclude' => '', 'echo' => 1,
-        'selected' => 0, 'hierarchical' => 0,
-        'name' => 'cat', 'id' => '',
-        'class' => 'postform', 'depth' => 0,
-        'tab_index' => 0, 'taxonomy' => 'category',
-        'hide_if_empty' => false, 'option_none_value' => -1,
-        'value_field' => 'term_id',
-    );
-    $defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0;
-    // Back compat.
-    if ( isset( $args['type'] ) && 'link' == $args['type'] ) {
-        _deprecated_argument( __FUNCTION__, '3.0', '' );
-        $args['taxonomy'] = 'link_category';
+    }
-    $r = wp_parse_args( $args, $defaults );
-    $option_none_value = $r['option_none_value'];
-    if ( ! isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) {
-        $r['pad_counts'] = true;
+    }
-    $tab_index = $r['tab_index'];
-    $tab_index_attribute = '';
-    if ( (int) $tab_index > 0 ) {
-        $tab_index_attribute = " tabindex=\"$tab_index\"";
+    }
-    // Avoid clashes with the 'name' param of get_terms().
-    $get_terms_args = $r;
-    unset( $get_terms_args['name'] );
-    $categories = get_terms( $r['taxonomy'], $get_terms_args );
-    $name = esc_attr( $r['name'] );
-    $class = esc_attr( $r['class'] );
-    $id = $r['id'] ? esc_attr( $r['id'] ) : $name;
-    if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
-        $output = "<select name='$name' id='$id' class='$class' $tab_index_attribute>\n";
-    } else {
-        $output = '';
+    }
-    if ( empty( $categories ) && ! $r['hide_if_empty'] && ! empty( $r['show_option_none'] ) ) {
-        /**
-         * Filter a taxonomy drop-down display element.
+         *
-         * A variety of taxonomy drop-down display elements can be modified
-         * just prior to display via this filter. Filterable arguments include
-         * 'show_option_none', 'show_option_all', and various forms of the
-         * term name.
+         *
-         * @since 1.2.0
+         *
-         * @see wp_dropdown_categories()
+         *
-         * @param string $element Taxonomy element to list.
-         */
-        $show_option_none = apply_filters( 'list_cats', $r['show_option_none'] );
-        $output .= "\t<option value='" . esc_attr( $option_none_value ) . "' selected='selected'>$show_option_none</option>\n";
+    }
-    if ( ! empty( $categories ) ) {
-        if ( $r['show_option_all'] ) {
-            /** This filter is documented in wp-includes/category-template.php */
-            $show_option_all = apply_filters( 'list_cats', $r['show_option_all'] );
-            $selected = ( '0' === strval($r['selected']) ) ? " selected='selected'" : '';
-            $output .= "\t<option value='0'$selected>$show_option_all</option>\n";
+        }
-        if ( $r['show_option_none'] ) {
-            /** This filter is documented in wp-includes/category-template.php */
-            $show_option_none = apply_filters( 'list_cats', $r['show_option_none'] );
-            $selected = selected( $option_none_value, $r['selected'], false );
-            $output .= "\t<option value='" . esc_attr( $option_none_value ) . "'$selected>$show_option_none</option>\n";
+        }
-        if ( $r['hierarchical'] ) {
-            $depth = $r['depth'];  // Walk the full depth.
-        } else {
-            $depth = -1; // Flat.
+        }
-        $output .= walk_category_dropdown_tree( $categories, $depth, $r );
+    }
-    if ( ! $r['hide_if_empty'] || ! empty( $categories ) ) {
-        $output .= "</select>\n";
+    }
-    /**
-     * Filter the taxonomy drop-down output.
+     *
-     * @since 2.1.0
+     *
-     * @param string $output HTML output.
-     * @param array  $r      Arguments used to build the drop-down.
-     */
-    $output = apply_filters( 'wp_dropdown_cats', $output, $r );
-    if ( $r['echo'] ) {
-        echo $output;
+    }
-    return $output;
+}
-/**
- * Display or retrieve the HTML list of categories.
+ *
- * @since 2.1.0
- * @since 4.4.0 Introduced the `hide_title_if_empty` argument. The `current_category` argument was modified to
- *              optionally accept an array of values.
+ *
- * @param string|array $args {
- *     Array of optional arguments.
+ *
- *     @type string       $show_option_all       Text to display for showing all categories. Default empty string.
- *     @type string       $show_option_none      Text to display for the 'no categories' option.
- *                                               Default 'No categories'.
- *     @type string       $orderby               The column to use for ordering categories. Default 'ID'.
- *     @type string       $order                 Which direction to order categories. Accepts 'ASC' or 'DESC'.
- *                                               Default 'ASC'.
- *     @type bool|int     $show_count            Whether to show how many posts are in the category. Default 0.
- *     @type bool|int     $hide_empty            Whether to hide categories that don't have any posts attached to them.
- *                                               Default 1.
- *     @type bool|int     $use_desc_for_title    Whether to use the category description as the title attribute.
- *                                               Default 1.
- *     @type string       $feed                  Text to use for the feed link. Default 'Feed for all posts filed
- *                                               under [cat name]'.
- *     @type string       $feed_type             Feed type. Used to build feed link. See {@link get_term_feed_link()}.
- *                                               Default empty string (default feed).
- *     @type string       $feed_image            URL of an image to use for the feed link. Default empty string.
- *     @type int          $child_of              Term ID to retrieve child terms of. See {@link get_terms()}. Default 0.
- *     @type array|string $exclude               Array or comma/space-separated string of term IDs to exclude.
- *                                               See {@link get_terms()}. Default empty string.
- *     @type array|string $exclude_tree          Array or comma/space-separated string of term IDs to exclude, along
- *                                               with their descendants. See {@link get_terms()}. Default empty string.
- *     @type bool|int     $echo                  True to echo markup, false to return it. Default 1.
- *     @type int|array    $current_category      ID of category, or array of IDs of categories, that should get the
- *                                               'current-cat' class. Default 0.
- *     @type bool         $hierarchical          Whether to include terms that have non-empty descendants.
- *                                               See {@link get_terms()}. Default true.
- *     @type string       $title_li              Text to use for the list title `<li>` element. Pass an empty string
- *                                               to disable. Default 'Categories'.
- *     @type bool         $hide_title_if_empty   Whether to hide the `$title_li` element if there are no terms in
- *                                               the list. Default false (title will always be shown).
- *     @type int          $depth                 Category depth. Used for tab indentation. Default 0.
- *     @type string       $taxonomy              Taxonomy name. Default 'category'.
- * }
- * @return false|string HTML content only if 'echo' argument is 0.
- */
-function wp_list_categories( $args = '' ) {
-    $defaults = array(
-        'show_option_all' => '', 'show_option_none' => __('No categories'),
-        'orderby' => 'name', 'order' => 'ASC',
-        'style' => 'list',
-        'show_count' => 0, 'hide_empty' => 1,
-        'use_desc_for_title' => 1, 'child_of' => 0,
-        'feed' => '', 'feed_type' => '',
-        'feed_image' => '', 'exclude' => '',
-        'exclude_tree' => '', 'current_category' => 0,
-        'hierarchical' => true, 'title_li' => __( 'Categories' ),
-        'hide_title_if_empty' => false,
-        'echo' => 1, 'depth' => 0,
-        'taxonomy' => 'category'
-    );
-    $r = wp_parse_args( $args, $defaults );
-    if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] )
-        $r['pad_counts'] = true;
-    if ( true == $r['hierarchical'] ) {
-        $r['exclude_tree'] = $r['exclude'];
-        $r['exclude'] = '';
+    }
-    if ( ! isset( $r['class'] ) )
-        $r['class'] = ( 'category' == $r['taxonomy'] ) ? 'categories' : $r['taxonomy'];
-    if ( ! taxonomy_exists( $r['taxonomy'] ) ) {
-        return false;
+    }
-    $show_option_all = $r['show_option_all'];
-    $show_option_none = $r['show_option_none'];
-    $categories = get_categories( $r );
-    $output = '';
-    if ( $r['title_li'] && 'list' == $r['style'] && ( ! empty( $categories ) || ! $r['hide_title_if_empty'] ) ) {
-        $output = '<li class="' . esc_attr( $r['class'] ) . '">' . $r['title_li'] . '<ul>';
+    }
-    if ( empty( $categories ) ) {
-        if ( ! empty( $show_option_none ) ) {
-            if ( 'list' == $r['style'] ) {
-                $output .= '<li class="cat-item-none">' . $show_option_none . '</li>';
-            } else {
-                $output .= $show_option_none;
+            }
+        }
-    } else {
-        if ( ! empty( $show_option_all ) ) {
-            $posts_page = '';
-            // For taxonomies that belong only to custom post types, point to a valid archive.
-            $taxonomy_object = get_taxonomy( $r['taxonomy'] );
-            if ( ! in_array( 'post', $taxonomy_object->object_type ) && ! in_array( 'page', $taxonomy_object->object_type ) ) {
-                foreach ( $taxonomy_object->object_type as $object_type ) {
-                    $_object_type = get_post_type_object( $object_type );
-                    // Grab the first one.
-                    if ( ! empty( $_object_type->has_archive ) ) {
-                        $posts_page = get_post_type_archive_link( $object_type );
-                        break;
+                    }
+                }
+            }
-            // Fallback for the 'All' link is the front page.
-            if ( ! $posts_page ) {
-                $posts_page = 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ? get_permalink( get_option( 'page_for_posts' ) ) : home_url( '/' );
+            }
-            $posts_page = esc_url( $posts_page );
-            if ( 'list' == $r['style'] ) {
-                $output .= "<li class='cat-item-all'><a href='$posts_page'>$show_option_all</a></li>";
-            } else {
-                $output .= "<a href='$posts_page'>$show_option_all</a>";
+            }
+        }
-        if ( empty( $r['current_category'] ) && ( is_category() || is_tax() || is_tag() ) ) {
-            $current_term_object = get_queried_object();
-            if ( $current_term_object && $r['taxonomy'] === $current_term_object->taxonomy ) {
-                $r['current_category'] = get_queried_object_id();
+            }
+        }
-        if ( $r['hierarchical'] ) {
-            $depth = $r['depth'];
-        } else {
-            $depth = -1; // Flat.
+        }
-        $output .= walk_category_tree( $categories, $depth, $r );
+    }
-    if ( $r['title_li'] && 'list' == $r['style'] )
-        $output .= '</ul></li>';
-    /**
-     * Filter the HTML output of a taxonomy list.
+     *
-     * @since 2.1.0
+     *
-     * @param string $output HTML output.
-     * @param array  $args   An array of taxonomy-listing arguments.
-     */
-    $html = apply_filters( 'wp_list_categories', $output, $args );
-    if ( $r['echo'] ) {
-        echo $html;
-    } else {
-        return $html;
+    }
+}
-/**
- * Display tag cloud.
+ *
- * The text size is set by the 'smallest' and 'largest' arguments, which will
- * use the 'unit' argument value for the CSS text size unit. The 'format'
- * argument can be 'flat' (default), 'list', or 'array'. The flat value for the
- * 'format' argument will separate tags with spaces. The list value for the
- * 'format' argument will format the tags in a UL HTML list. The array value for
- * the 'format' argument will return in PHP array type format.
+ *
- * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
- * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC'.
+ *
- * The 'number' argument is how many tags to return. By default, the limit will
- * be to return the top 45 tags in the tag cloud list.
+ *
- * The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
- * text for the tooltip of the tag link.
+ *
- * The 'topic_count_text_callback' argument is a function, which given the count
- * of the posts with that tag returns a text for the tooltip of the tag link.
+ *
- * The 'post_type' argument is used only when 'link' is set to 'edit'. It determines the post_type
- * passed to edit.php for the popular tags edit links.
+ *
- * The 'exclude' and 'include' arguments are used for the {@link get_tags()}
- * function. Only one should be used, because only one will be used and the
- * other ignored, if they are both set.
+ *
- * @since 2.3.0
+ *
- * @param array|string|null $args Optional. Override default arguments.
- * @return void|array Generated tag cloud, only if no failures and 'array' is set for the 'format' argument.
- *                    Otherwise, this function outputs the tag cloud.
- */
-function wp_tag_cloud( $args = '' ) {
-    $defaults = array(
-        'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
-        'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC',
-        'exclude' => '', 'include' => '', 'link' => 'view', 'taxonomy' => 'post_tag', 'post_type' => '', 'echo' => true
-    );
-    $args = wp_parse_args( $args, $defaults );
-    $tags = get_terms( $args['taxonomy'], array_merge( $args, array( 'orderby' => 'count', 'order' => 'DESC' ) ) ); // Always query top tags
-    if ( empty( $tags ) || is_wp_error( $tags ) )
-        return;
-    foreach ( $tags as $key => $tag ) {
-        if ( 'edit' == $args['link'] )
-            $link = get_edit_term_link( $tag->term_id, $tag->taxonomy, $args['post_type'] );
-        else
-            $link = get_term_link( intval($tag->term_id), $tag->taxonomy );
-        if ( is_wp_error( $link ) )
-            return;
-        $tags[ $key ]->link = $link;
-        $tags[ $key ]->id = $tag->term_id;
+    }
-    $return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
-    /**
-     * Filter the tag cloud output.
+     *
-     * @since 2.3.0
+     *
-     * @param string $return HTML output of the tag cloud.
-     * @param array  $args   An array of tag cloud arguments.
-     */
-    $return = apply_filters( 'wp_tag_cloud', $return, $args );
-    if ( 'array' == $args['format'] || empty($args['echo']) )
-        return $return;
-    echo $return;
+}
-/**
- * Default topic count scaling for tag links
+ *
- * @param int $count number of posts with that tag
- * @return int scaled count
- */
-function default_topic_count_scale( $count ) {
-    return round(log10($count + 1) * 100);
+}
-/**
- * Generates a tag cloud (heatmap) from provided data.
+ *
- * The text size is set by the 'smallest' and 'largest' arguments, which will
- * use the 'unit' argument value for the CSS text size unit. The 'format'
- * argument can be 'flat' (default), 'list', or 'array'. The flat value for the
- * 'format' argument will separate tags with spaces. The list value for the
- * 'format' argument will format the tags in a UL HTML list. The array value for
- * the 'format' argument will return in PHP array type format.
+ *
- * The 'tag_cloud_sort' filter allows you to override the sorting.
- * Passed to the filter: $tags array and $args array, has to return the $tags array
- * after sorting it.
+ *
- * The 'orderby' argument will accept 'name' or 'count' and defaults to 'name'.
- * The 'order' is the direction to sort, defaults to 'ASC' and can be 'DESC' or
- * 'RAND'.
+ *
- * The 'number' argument is how many tags to return. By default, the limit will
- * be to return the entire tag cloud list.
+ *
- * The 'topic_count_text' argument is a nooped plural from _n_noop() to generate the
- * text for the tooltip of the tag link.
+ *
- * The 'topic_count_text_callback' argument is a function, which given the count
- * of the posts with that tag returns a text for the tooltip of the tag link.
+ *
- * @todo Complete functionality.
- * @since 2.3.0
+ *
- * @param array $tags List of tags.
- * @param string|array $args Optional, override default arguments.
- * @return string|array Tag cloud as a string or an array, depending on 'format' argument.
- */
-function wp_generate_tag_cloud( $tags, $args = '' ) {
-    $defaults = array(
-        'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 0,
-        'format' => 'flat', 'separator' => "\n", 'orderby' => 'name', 'order' => 'ASC',
-        'topic_count_text' => null, 'topic_count_text_callback' => null,
-        'topic_count_scale_callback' => 'default_topic_count_scale', 'filter' => 1,
-    );
-    $args = wp_parse_args( $args, $defaults );
-    $return = ( 'array' === $args['format'] ) ? array() : '';
-    if ( empty( $tags ) ) {
-        return $return;
+    }
-    // Juggle topic count tooltips:
-    if ( isset( $args['topic_count_text'] ) ) {
-        // First look for nooped plural support via topic_count_text.
-        $translate_nooped_plural = $args['topic_count_text'];
-    } elseif ( ! empty( $args['topic_count_text_callback'] ) ) {
-        // Look for the alternative callback style. Ignore the previous default.
-        if ( $args['topic_count_text_callback'] === 'default_topic_count_text' ) {
-            $translate_nooped_plural = _n_noop( '%s topic', '%s topics' );
-        } else {
-            $translate_nooped_plural = false;
+        }
-    } elseif ( isset( $args['single_text'] ) && isset( $args['multiple_text'] ) ) {
-        // If no callback exists, look for the old-style single_text and multiple_text arguments.
-        $translate_nooped_plural = _n_noop( $args['single_text'], $args['multiple_text'] );
-    } else {
-        // This is the default for when no callback, plural, or argument is passed in.
-        $translate_nooped_plural = _n_noop( '%s topic', '%s topics' );
+    }
-    /**
-     * Filter how the items in a tag cloud are sorted.
+     *
-     * @since 2.8.0
+     *
-     * @param array $tags Ordered array of terms.
-     * @param array $args An array of tag cloud arguments.
-     */
-    $tags_sorted = apply_filters( 'tag_cloud_sort', $tags, $args );
-    if ( empty( $tags_sorted ) ) {
-        return $return;
+    }
-    if ( $tags_sorted !== $tags ) {
-        $tags = $tags_sorted;
-        unset( $tags_sorted );
-    } else {
-        if ( 'RAND' === $args['order'] ) {
-            shuffle( $tags );
-        } else {
-            // SQL cannot save you; this is a second (potentially different) sort on a subset of data.
-            if ( 'name' === $args['orderby'] ) {
-                uasort( $tags, '_wp_object_name_sort_cb' );
-            } else {
-                uasort( $tags, '_wp_object_count_sort_cb' );
+            }
-            if ( 'DESC' === $args['order'] ) {
-                $tags = array_reverse( $tags, true );
+            }
+        }
+    }
-    if ( $args['number'] > 0 )
-        $tags = array_slice( $tags, 0, $args['number'] );
-    $counts = array();
-    $real_counts = array(); // For the alt tag
-    foreach ( (array) $tags as $key => $tag ) {
-        $real_counts[ $key ] = $tag->count;
-        $counts[ $key ] = call_user_func( $args['topic_count_scale_callback'], $tag->count );
+    }
-    $min_count = min( $counts );
-    $spread = max( $counts ) - $min_count;
-    if ( $spread <= 0 )
-        $spread = 1;
-    $font_spread = $args['largest'] - $args['smallest'];
-    if ( $font_spread < 0 )
-        $font_spread = 1;
-    $font_step = $font_spread / $spread;
-    // Assemble the data that will be used to generate the tag cloud markup.
-    $tags_data = array();
-    foreach ( $tags as $key => $tag ) {
-        $tag_id = isset( $tag->id ) ? $tag->id : $key;
-        $count = $counts[ $key ];
-        $real_count = $real_counts[ $key ];
-        if ( $translate_nooped_plural ) {
-            $title = sprintf( translate_nooped_plural( $translate_nooped_plural, $real_count ), number_format_i18n( $real_count ) );
-        } else {
-            $title = call_user_func( $args['topic_count_text_callback'], $real_count, $tag, $args );
+        }
-        $tags_data[] = array(
-            'id'         => $tag_id,
-            'url'        => '#' != $tag->link ? $tag->link : '#',
-            'name'       => $tag->name,
-            'title'      => $title,
-            'slug'       => $tag->slug,
-            'real_count' => $real_count,
-            'class'      => 'tag-link-' . $tag_id,
-            'font_size'  => $args['smallest'] + ( $count - $min_count ) * $font_step,
-        );
+    }
-    /**
-     * Filter the data used to generate the tag cloud.
+     *
-     * @since 4.3.0
+     *
-     * @param array $tags_data An array of term data for term used to generate the tag cloud.
-     */
-    $tags_data = apply_filters( 'wp_generate_tag_cloud_data', $tags_data );
-    $a = array();
-    // generate the output links array
-    foreach ( $tags_data as $key => $tag_data ) {
-        $a[] = "<a href='" . esc_url( $tag_data['url'] ) . "' class='" . esc_attr( $tag_data['class'] ) . "' title='" . esc_attr( $tag_data['title'] ) . "' style='font-size: " . esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ) . ";'>" . esc_html( $tag_data['name'] ) . "</a>";
+    }
-    switch ( $args['format'] ) {
-        case 'array' :
-            $return =& $a;
-            break;
-        case 'list' :
-            $return = "<ul class='wp-tag-cloud'>\n\t<li>";
-            $return .= join( "</li>\n\t<li>", $a );
-            $return .= "</li>\n</ul>\n";
-            break;
-        default :
-            $return = join( $args['separator'], $a );
-            break;
+    }
-    if ( $args['filter'] ) {
-        /**
-         * Filter the generated output of a tag cloud.
+         *
-         * The filter is only evaluated if a true value is passed
-         * to the $filter argument in wp_generate_tag_cloud().
+         *
-         * @since 2.3.0
+         *
-         * @see wp_generate_tag_cloud()
+         *
-         * @param array|string $return String containing the generated HTML tag cloud output
-         *                             or an array of tag links if the 'format' argument
-         *                             equals 'array'.
-         * @param array        $tags   An array of terms used in the tag cloud.
-         * @param array        $args   An array of wp_generate_tag_cloud() arguments.
-         */
-        return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
+    }
-    else
-        return $return;
+}
-/**
- * Callback for comparing objects based on name
+ *
- * @since 3.1.0
- * @access private
- * @return int
- */
-function _wp_object_name_sort_cb( $a, $b ) {
-    return strnatcasecmp( $a->name, $b->name );
+}
-/**
- * Callback for comparing objects based on count
+ *
- * @since 3.1.0
- * @access private
- * @return bool
- */
-function _wp_object_count_sort_cb( $a, $b ) {
-    return ( $a->count > $b->count );
+}
-//
-// Helper functions
-//
-/**
- * Retrieve HTML list content for category list.
+ *
- * @uses Walker_Category to create HTML list content.
- * @since 2.1.0
- * @see Walker_Category::walk() for parameters and return description.
- * @return string
- */
-function walk_category_tree() {
-    $args = func_get_args();
-    // the user's options are the third parameter
-    if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
-        $walker = new Walker_Category;
-    } else {
-        $walker = $args[2]['walker'];
+    }
-    return call_user_func_array( array( $walker, 'walk' ), $args );
+}
-/**
- * Retrieve HTML dropdown (select) content for category list.
+ *
- * @uses Walker_CategoryDropdown to create HTML dropdown content.
- * @since 2.1.0
- * @see Walker_CategoryDropdown::walk() for parameters and return description.
- * @return string
- */
-function walk_category_dropdown_tree() {
-    $args = func_get_args();
-    // the user's options are the third parameter
-    if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
-        $walker = new Walker_CategoryDropdown;
-    } else {
-        $walker = $args[2]['walker'];
+    }
-    return call_user_func_array( array( $walker, 'walk' ), $args );
+}
 /**
 …
+}
-/**
- * Create HTML dropdown list of Categories.
+ *
- * @package WordPress
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_CategoryDropdown extends Walker {
-    /**
-     * @see Walker::$tree_type
-     * @since 2.1.0
-     * @var string
-     */
-    public $tree_type = 'category';
-    /**
-     * @see Walker::$db_fields
-     * @since 2.1.0
-     * @todo Decouple this
-     * @var array
-     */
-    public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
-    /**
-     * Start the element output.
+     *
-     * @see Walker::start_el()
-     * @since 2.1.0
+     *
-     * @param string $output   Passed by reference. Used to append additional content.
-     * @param object $category Category data object.
-     * @param int    $depth    Depth of category. Used for padding.
-     * @param array  $args     Uses 'selected', 'show_count', and 'value_field' keys, if they exist.
-     *                         See {@see wp_dropdown_categories()}.
-     */
-    public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
-        $pad = str_repeat('&nbsp;', $depth * 3);
-        /** This filter is documented in wp-includes/category-template.php */
-        $cat_name = apply_filters( 'list_cats', $category->name, $category );
-        if ( isset( $args['value_field'] ) && isset( $category->{$args['value_field']} ) ) {
-            $value_field = $args['value_field'];
-        } else {
-            $value_field = 'term_id';
+        }
-        $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $category->{$value_field} ) . "\"";
-        // Type-juggling causes false matches, so we force everything to a string.
-        if ( (string) $category->{$value_field} === (string) $args['selected'] )
-            $output .= ' selected="selected"';
-        $output .= '>';
-        $output .= $pad.$cat_name;
-        if ( $args['show_count'] )
-            $output .= '&nbsp;&nbsp;('. number_format_i18n( $category->count ) .')';
-        $output .= "</option>\n";
+    }
+}
-//
-// Tags
-//
-/**
- * Retrieve the link to the tag.
+ *
- * @since 2.3.0
- * @see get_term_link()
+ *
- * @param int|object $tag Tag ID or object.
- * @return string Link on success, empty string if tag does not exist.
- */
-function get_tag_link( $tag ) {
-    if ( ! is_object( $tag ) )
-        $tag = (int) $tag;
-    $tag = get_term_link( $tag, 'post_tag' );
-    if ( is_wp_error( $tag ) )
-        return '';
-    return $tag;
+}
-/**
- * Retrieve the tags for a post.
+ *
- * @since 2.3.0
+ *
- * @param int $id Post ID.
- * @return array|false|WP_Error Array of tag objects on success, false on failure.
- */
-function get_the_tags( $id = 0 ) {
-    /**
-     * Filter the array of tags for the given post.
+     *
-     * @since 2.3.0
+     *
-     * @see get_the_terms()
+     *
-     * @param array $terms An array of tags for the given post.
-     */
-    return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) );
+}
-/**
- * Retrieve the tags for a post formatted as a string.
+ *
- * @since 2.3.0
+ *
- * @param string $before Optional. Before tags.
- * @param string $sep Optional. Between tags.
- * @param string $after Optional. After tags.
- * @param int $id Optional. Post ID. Defaults to the current post.
- * @return string|false|WP_Error A list of tags on success, false if there are no terms, WP_Error on failure.
- */
-function get_the_tag_list( $before = '', $sep = '', $after = '', $id = 0 ) {
-    /**
-     * Filter the tags list for a given post.
+     *
-     * @since 2.3.0
+     *
-     * @param string $tag_list List of tags.
-     * @param string $before   String to use before tags.
-     * @param string $sep      String to use between the tags.
-     * @param string $after    String to use after tags.
-     * @param int    $id       Post ID.
-     */
-    return apply_filters( 'the_tags', get_the_term_list( $id, 'post_tag', $before, $sep, $after ), $before, $sep, $after, $id );
+}
-/**
- * Retrieve the tags for a post.
+ *
- * @since 2.3.0
+ *
- * @param string $before Optional. Before list.
- * @param string $sep Optional. Separate items using this.
- * @param string $after Optional. After list.
- */
-function the_tags( $before = null, $sep = ', ', $after = '' ) {
-    if ( null === $before )
-        $before = __('Tags: ');
-    echo get_the_tag_list($before, $sep, $after);
+}
-/**
- * Retrieve tag description.
+ *
- * @since 2.8.0
+ *
- * @param int $tag Optional. Tag ID. Will use global tag ID by default.
- * @return string Tag description, available.
- */
-function tag_description( $tag = 0 ) {
-    return term_description( $tag );
+}
-/**
- * Retrieve term description.
+ *
- * @since 2.8.0
+ *
- * @param int $term Optional. Term ID. Will use global term ID by default.
- * @param string $taxonomy Optional taxonomy name. Defaults to 'post_tag'.
- * @return string Term description, available.
- */
-function term_description( $term = 0, $taxonomy = 'post_tag' ) {
-    if ( ! $term && ( is_tax() || is_tag() || is_category() ) ) {
-        $term = get_queried_object();
-        if ( $term ) {
-            $taxonomy = $term->taxonomy;
-            $term = $term->term_id;
+        }
+    }
-    $description = get_term_field( 'description', $term, $taxonomy );
-    return is_wp_error( $description ) ? '' : $description;
+}
-/**
- * Retrieve the terms of the taxonomy that are attached to the post.
+ *
- * @since 2.5.0
+ *
- * @param int|object $post Post ID or object.
- * @param string $taxonomy Taxonomy name.
- * @return array|false|WP_Error Array of term objects on success, false if there are no terms
- *                              or the post does not exist, WP_Error on failure.
- */
-function get_the_terms( $post, $taxonomy ) {
-    if ( ! $post = get_post( $post ) )
-        return false;
-    $terms = get_object_term_cache( $post->ID, $taxonomy );
-    if ( false === $terms ) {
-        $terms = wp_get_object_terms( $post->ID, $taxonomy );
-        wp_cache_add($post->ID, $terms, $taxonomy . '_relationships');
+    }
-    /**
-     * Filter the list of terms attached to the given post.
+     *
-     * @since 3.1.0
+     *
-     * @param array|WP_Error $terms    List of attached terms, or WP_Error on failure.
-     * @param int            $post_id  Post ID.
-     * @param string         $taxonomy Name of the taxonomy.
-     */
-    $terms = apply_filters( 'get_the_terms', $terms, $post->ID, $taxonomy );
-    if ( empty( $terms ) )
-        return false;
-    return $terms;
+}
-/**
- * Retrieve a post's terms as a list with specified format.
+ *
- * @since 2.5.0
+ *
- * @param int $id Post ID.
- * @param string $taxonomy Taxonomy name.
- * @param string $before Optional. Before list.
- * @param string $sep Optional. Separate items using this.
- * @param string $after Optional. After list.
- * @return string|false|WP_Error A list of terms on success, false if there are no terms, WP_Error on failure.
- */
-function get_the_term_list( $id, $taxonomy, $before = '', $sep = '', $after = '' ) {
-    $terms = get_the_terms( $id, $taxonomy );
-    if ( is_wp_error( $terms ) )
-        return $terms;
-    if ( empty( $terms ) )
-        return false;
-    $links = array();
-    foreach ( $terms as $term ) {
-        $link = get_term_link( $term, $taxonomy );
-        if ( is_wp_error( $link ) ) {
-            return $link;
+        }
-        $links[] = '<a href="' . esc_url( $link ) . '" rel="tag">' . $term->name . '</a>';
+    }
-    /**
-     * Filter the term links for a given taxonomy.
+     *
-     * The dynamic portion of the filter name, `$taxonomy`, refers
-     * to the taxonomy slug.
+     *
-     * @since 2.5.0
+     *
-     * @param array $links An array of term links.
-     */
-    $term_links = apply_filters( "term_links-$taxonomy", $links );
-    return $before . join( $sep, $term_links ) . $after;
+}
-/**
- * Display the terms in a list.
+ *
- * @since 2.5.0
+ *
- * @param int $id Post ID.
- * @param string $taxonomy Taxonomy name.
- * @param string $before Optional. Before list.
- * @param string $sep Optional. Separate items using this.
- * @param string $after Optional. After list.
- * @return false|void False on WordPress error.
- */
-function the_terms( $id, $taxonomy, $before = '', $sep = ', ', $after = '' ) {
-    $term_list = get_the_term_list( $id, $taxonomy, $before, $sep, $after );
-    if ( is_wp_error( $term_list ) )
-        return false;
-    /**
-     * Filter the list of terms to display.
+     *
-     * @since 2.9.0
+     *
-     * @param array  $term_list List of terms to display.
-     * @param string $taxonomy  The taxonomy name.
-     * @param string $before    String to use before the terms.
-     * @param string $sep       String to use between the terms.
-     * @param string $after     String to use after the terms.
-     */
-    echo apply_filters( 'the_terms', $term_list, $taxonomy, $before, $sep, $after );
+}
-/**
- * Check if the current post has any of given category.
+ *
- * @since 3.1.0
+ *
- * @param string|int|array $category Optional. The category name/term_id/slug or array of them to check for.
- * @param int|object $post Optional. Post to check instead of the current post.
- * @return bool True if the current post has any of the given categories (or any category, if no category specified).
- */
-function has_category( $category = '', $post = null ) {
-    return has_term( $category, 'category', $post );
+}
-/**
- * Check if the current post has any of given tags.
+ *
- * The given tags are checked against the post's tags' term_ids, names and slugs.
- * Tags given as integers will only be checked against the post's tags' term_ids.
- * If no tags are given, determines if post has any tags.
+ *
- * Prior to v2.7 of WordPress, tags given as integers would also be checked against the post's tags' names and slugs (in addition to term_ids)
- * Prior to v2.7, this function could only be used in the WordPress Loop.
- * As of 2.7, the function can be used anywhere if it is provided a post ID or post object.
+ *
- * @since 2.6.0
+ *
- * @param string|int|array $tag Optional. The tag name/term_id/slug or array of them to check for.
- * @param int|object $post Optional. Post to check instead of the current post. (since 2.7.0)
- * @return bool True if the current post has any of the given tags (or any tag, if no tag specified).
- */
-function has_tag( $tag = '', $post = null ) {
-    return has_term( $tag, 'post_tag', $post );
+}
-/**
- * Check if the current post has any of given terms.
+ *
- * The given terms are checked against the post's terms' term_ids, names and slugs.
- * Terms given as integers will only be checked against the post's terms' term_ids.
- * If no terms are given, determines if post has any terms.
+ *
- * @since 3.1.0
+ *
- * @param string|int|array $term Optional. The term name/term_id/slug or array of them to check for.
- * @param string $taxonomy Taxonomy name
- * @param int|object $post Optional. Post to check instead of the current post.
- * @return bool True if the current post has any of the given tags (or any tag, if no tag specified).
- */
-function has_term( $term = '', $taxonomy = '', $post = null ) {
-    $post = get_post($post);
-    if ( !$post )
-        return false;
-    $r = is_object_in_term( $post->ID, $taxonomy, $term );
-    if ( is_wp_error( $r ) )
-        return false;
-    return $r;
+}

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