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1 <?php 2 3 function get_category_children($id, $before = '/', $after = '') { 4 if ( 0 == $id ) 5 return ''; 6 7 $chain = ''; 8 // TODO: consult hierarchy 9 $cat_ids = get_all_category_ids(); 10 foreach ( $cat_ids as $cat_id ) { 11 if ( $cat_id == $id ) 12 continue; 13 14 $category = get_category($cat_id); 15 if ( is_wp_error( $category ) ) 16 return $category; 17 if ( $category->parent == $id ) { 18 $chain .= $before.$category->term_id.$after; 19 $chain .= get_category_children($category->term_id, $before, $after); 20 } 21 } 22 return $chain; 23 } 24 25 function get_category_link($category_id) { 26 global $wp_rewrite; 27 $catlink = $wp_rewrite->get_category_permastruct(); 28 29 if ( empty($catlink) ) { 30 $file = get_option('home') . '/'; 31 $catlink = $file . '?cat=' . $category_id; 32 } else { 33 $category = &get_category($category_id); 34 if ( is_wp_error( $category ) ) 35 return $category; 36 $category_nicename = $category->slug; 37 38 if ( $parent = $category->parent ) 39 $category_nicename = get_category_parents($parent, false, '/', true) . $category_nicename; 40 41 $catlink = str_replace('%category%', $category_nicename, $catlink); 42 $catlink = get_option('home') . user_trailingslashit($catlink, 'category'); 43 } 44 return apply_filters('category_link', $catlink, $category_id); 45 } 46 47 function get_category_parents($id, $link = FALSE, $separator = '/', $nicename = FALSE){ 48 $chain = ''; 49 $parent = &get_category($id); 50 if ( is_wp_error( $parent ) ) 51 return $parent; 52 53 if ( $nicename ) 54 $name = $parent->slug; 55 else 56 $name = $parent->cat_name; 57 58 if ( $parent->parent && ($parent->parent != $parent->term_id) ) 59 $chain .= get_category_parents($parent->parent, $link, $separator, $nicename); 60 61 if ( $link ) 62 $chain .= '<a href="' . get_category_link($parent->term_id) . '" title="' . sprintf(__("View all posts in %s"), $parent->cat_name) . '">'.$name.'</a>' . $separator; 63 else 64 $chain .= $name.$separator; 65 return $chain; 66 } 67 68 function get_the_category($id = false) { 69 global $post, $term_cache, $blog_id; 70 71 $id = (int) $id; 72 if ( !$id ) 73 $id = (int) $post->ID; 74 75 $categories = get_object_term_cache($id, 'category'); 76 if ( false === $categories ) 77 $categories = wp_get_object_terms($id, 'category'); 78 79 if ( !empty($categories) ) 80 usort($categories, '_usort_terms_by_name'); 81 else 82 $categories = array(); 83 84 foreach(array_keys($categories) as $key) { 85 _make_cat_compat($categories[$key]); 86 } 87 88 return $categories; 89 } 90 91 function _usort_terms_by_name($a, $b) { 92 return strcmp($a->name, $b->name); 93 } 94 95 function _usort_terms_by_ID($a, $b) { 96 if ( $a->term_id > $b->term_id ) 97 return 1; 98 elseif ( $a->term_id < $b->term_id ) 99 return -1; 100 else 101 return 0; 102 } 103 104 function get_the_category_by_ID($cat_ID) { 105 $cat_ID = (int) $cat_ID; 106 $category = &get_category($cat_ID); 107 if ( is_wp_error( $category ) ) 108 return $category; 109 return $category->name; 110 } 111 112 function get_the_category_list($separator = '', $parents='') { 113 global $wp_rewrite; 114 $categories = get_the_category(); 115 if (empty($categories)) 116 return apply_filters('the_category', __('Uncategorized'), $separator, $parents); 117 118 $rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"'; 119 120 $thelist = ''; 121 if ( '' == $separator ) { 122 $thelist .= '<ul class="post-categories">'; 123 foreach ( $categories as $category ) { 124 $thelist .= "\n\t<li>"; 125 switch ( strtolower($parents) ) { 126 case 'multiple': 127 if ($category->parent) 128 $thelist .= get_category_parents($category->parent, TRUE); 129 $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a></li>'; 130 break; 131 case 'single': 132 $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>'; 133 if ($category->parent) 134 $thelist .= get_category_parents($category->parent, FALSE); 135 $thelist .= $category->name.'</a></li>'; 136 break; 137 case '': 138 default: 139 $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->cat_name.'</a></li>'; 140 } 141 } 142 $thelist .= '</ul>'; 143 } else { 144 $i = 0; 145 foreach ( $categories as $category ) { 146 if ( 0 < $i ) 147 $thelist .= $separator . ' '; 148 switch ( strtolower($parents) ) { 149 case 'multiple': 150 if ( $category->parent ) 151 $thelist .= get_category_parents($category->parent, TRUE); 152 $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->cat_name.'</a>'; 153 break; 154 case 'single': 155 $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>'; 156 if ( $category->parent ) 157 $thelist .= get_category_parents($category->parent, FALSE); 158 $thelist .= "$category->cat_name</a>"; 159 break; 160 case '': 161 default: 162 $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a>'; 163 } 164 ++$i; 165 } 166 } 167 return apply_filters('the_category', $thelist, $separator, $parents); 168 } 169 170 function in_category( $category ) { // Check if the current post is in the given category 171 global $post, $blog_id; 172 173 $categories = get_object_term_cache($post->ID, 'category'); 174 if ( false === $categories ) 175 $categories = wp_get_object_terms($post->ID, 'category'); 176 if(array_key_exists($category, $categories)) 177 return true; 178 else 179 return false; 180 } 181 182 function the_category($separator = '', $parents='') { 183 echo get_the_category_list($separator, $parents); 184 } 185 186 function category_description($category = 0) { 187 global $cat; 188 if ( !$category ) 189 $category = $cat; 190 191 return get_term_field('description', $category, 'category'); 192 } 193 194 function wp_dropdown_categories($args = '') { 195 $defaults = array( 196 'show_option_all' => '', 'show_option_none' => '', 197 'orderby' => 'ID', 'order' => 'ASC', 198 'show_last_update' => 0, 'show_count' => 0, 199 'hide_empty' => 1, 'child_of' => 0, 200 'exclude' => '', 'echo' => 1, 201 'selected' => 0, 'hierarchical' => 0, 202 'name' => 'cat', 'class' => 'postform' 203 ); 204 205 $defaults['selected'] = ( is_category() ) ? get_query_var('cat') : 0; 206 207 $r = wp_parse_args( $args, $defaults ); 208 $r['include_last_update_time'] = $r['show_last_update']; 209 extract( $r ); 210 211 $categories = get_categories($r); 212 213 $output = ''; 214 if ( ! empty($categories) ) { 215 $output = "<select name='$name' id='$name' class='$class'>\n"; 216 217 if ( $show_option_all ) { 218 $show_option_all = apply_filters('list_cats', $show_option_all); 219 $output .= "\t<option value='0'>$show_option_all</option>\n"; 220 } 221 222 if ( $show_option_none) { 223 $show_option_none = apply_filters('list_cats', $show_option_none); 224 $output .= "\t<option value='-1'>$show_option_none</option>\n"; 225 } 226 227 if ( $hierarchical ) 228 $depth = 0; // Walk the full depth. 229 else 230 $depth = -1; // Flat. 231 232 $output .= walk_category_dropdown_tree($categories, $depth, $r); 233 $output .= "</select>\n"; 234 } 235 236 $output = apply_filters('wp_dropdown_cats', $output); 237 238 if ( $echo ) 239 echo $output; 240 241 return $output; 242 } 243 244 function wp_list_categories($args = '') { 245 $defaults = array( 246 'show_option_all' => '', 'orderby' => 'name', 247 'order' => 'ASC', 'show_last_update' => 0, 248 'style' => 'list', 'show_count' => 0, 249 'hide_empty' => 1, 'use_desc_for_title' => 1, 250 'child_of' => 0, 'feed' => '', 251 'feed_image' => '', 'exclude' => '', 252 'hierarchical' => true, 'title_li' => __('Categories'), 253 'echo' => 1 254 ); 255 256 $r = wp_parse_args( $args, $defaults ); 257 258 if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) { 259 $r['pad_counts'] = true; 260 } 261 262 if ( isset( $r['show_date'] ) ) { 263 $r['include_last_update_time'] = $r['show_date']; 264 } 265 266 extract( $r ); 267 268 $categories = get_categories($r); 269 270 $output = ''; 271 if ( $title_li && 'list' == $style ) 272 $output = '<li class="categories">' . $r['title_li'] . '<ul>'; 273 274 if ( empty($categories) ) { 275 if ( 'list' == $style ) 276 $output .= '<li>' . __("No categories") . '</li>'; 277 else 278 $output .= __("No categories"); 279 } else { 280 global $wp_query; 281 282 if( !empty($show_option_all) ) 283 if ('list' == $style ) 284 $output .= '<li><a href="' . get_bloginfo('url') . '">' . $show_option_all . '</a></li>'; 285 else 286 $output .= '<a href="' . get_bloginfo('url') . '">' . $show_option_all . '</a>'; 287 288 if ( is_category() ) 289 $r['current_category'] = $wp_query->get_queried_object_id(); 290 291 if ( $hierarchical ) 292 $depth = 0; // Walk the full depth. 293 else 294 $depth = -1; // Flat. 295 296 $output .= walk_category_tree($categories, $depth, $r); 297 } 298 299 if ( $title_li && 'list' == $style ) 300 $output .= '</ul></li>'; 301 302 $output = apply_filters('wp_list_categories', $output); 303 304 if ( $echo ) 305 echo $output; 306 else 307 return $output; 308 } 309 310 function wp_tag_cloud( $args = '' ) { 311 $defaults = array( 312 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45, 313 'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC', 314 'exclude' => '', 'include' => '' 315 ); 316 $args = wp_parse_args( $args, $defaults ); 317 318 $tags = get_tags( array_merge($args, array('orderby' => 'count', 'order' => 'DESC')) ); // Always query top tags 319 320 if ( empty($tags) ) 321 return; 322 323 $return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args 324 if ( is_wp_error( $return ) ) 325 return false; 326 else 327 echo apply_filters( 'wp_tag_cloud', $return, $args ); 328 } 329 330 // $tags = prefetched tag array ( get_tags() ) 331 // $args['format'] = 'flat' => whitespace separated, 'list' => UL, 'array' => array() 332 // $args['orderby'] = 'name', 'count' 333 function wp_generate_tag_cloud( $tags, $args = '' ) { 334 global $wp_rewrite; 335 $defaults = array( 336 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45, 337 'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC' 338 ); 339 $args = wp_parse_args( $args, $defaults ); 340 extract($args); 341 342 if ( !$tags ) 343 return; 344 $counts = $tag_links = array(); 345 foreach ( (array) $tags as $tag ) { 346 $counts[$tag->name] = $tag->count; 347 $tag_links[$tag->name] = get_tag_link( $tag->term_id ); 348 if ( is_wp_error( $tag_links[$tag->name] ) ) 349 return $tag_links[$tag->name]; 350 $tag_ids[$tag->name] = $tag->term_id; 351 } 352 353 $min_count = min($counts); 354 $spread = max($counts) - $min_count; 355 if ( $spread <= 0 ) 356 $spread = 1; 357 $font_spread = $largest - $smallest; 358 if ( $font_spread <= 0 ) 359 $font_spread = 1; 360 $font_step = $font_spread / $spread; 361 362 // SQL cannot save you; this is a second (potentially different) sort on a subset of data. 363 if ( 'name' == $orderby ) 364 uksort($counts, 'strnatcasecmp'); 365 else 366 asort($counts); 367 368 if ( 'DESC' == $order ) 369 $counts = array_reverse( $counts, true ); 370 371 $a = array(); 372 373 $rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? ' rel="tag"' : ''; 374 375 foreach ( $counts as $tag => $count ) { 376 $tag_id = $tag_ids[$tag]; 377 $tag_link = clean_url($tag_links[$tag]); 378 $tag = str_replace(' ', ' ', wp_specialchars( $tag )); 379 $a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . attribute_escape( sprintf( __ngettext('%d topic','%d topics',$count), $count ) ) . "'$rel style='font-size: " . 380 ( $smallest + ( ( $count - $min_count ) * $font_step ) ) 381 . "$unit;'>$tag</a>"; 382 } 383 384 switch ( $format ) : 385 case 'array' : 386 $return =& $a; 387 break; 388 case 'list' : 389 $return = "<ul class='wp-tag-cloud'>\n\t<li>"; 390 $return .= join("</li>\n\t<li>", $a); 391 $return .= "</li>\n</ul>\n"; 392 break; 393 default : 394 $return = join("\n", $a); 395 break; 396 endswitch; 397 398 return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args ); 399 } 400 401 // 402 // Helper functions 403 // 404 405 function walk_category_tree() { 406 $walker = new Walker_Category; 407 $args = func_get_args(); 408 return call_user_func_array(array(&$walker, 'walk'), $args); 409 } 410 411 function walk_category_dropdown_tree() { 412 $walker = new Walker_CategoryDropdown; 413 $args = func_get_args(); 414 return call_user_func_array(array(&$walker, 'walk'), $args); 415 } 416 417 // 418 // Tags 419 // 420 421 function get_tag_link( $tag_id ) { 422 global $wp_rewrite; 423 $taglink = $wp_rewrite->get_tag_permastruct(); 424 425 $tag = &get_term($tag_id, 'post_tag'); 426 if ( is_wp_error( $tag ) ) 427 return $tag; 428 $slug = $tag->slug; 429 430 if ( empty($taglink) ) { 431 $file = get_option('home') . '/'; 432 $taglink = $file . '?tag=' . $slug; 433 } else { 434 $taglink = str_replace('%tag%', $slug, $taglink); 435