wp-includes/theme.php

   1 <?php
   2 /*
   3  * Theme/template/stylesheet functions.
   4  */
   5
   6 function get_stylesheet() {
   7         return apply_filters('stylesheet', get_option('stylesheet'));
   8 }
   9
  10 function get_stylesheet_directory() {
  11         $stylesheet = get_stylesheet();
  12         $stylesheet_dir = get_theme_root() . "/$stylesheet";
  13         return apply_filters('stylesheet_directory', $stylesheet_dir, $stylesheet);
  14 }
  15
  16 function get_stylesheet_directory_uri() {
  17         $stylesheet = get_stylesheet();
  18         $stylesheet_dir_uri = get_theme_root_uri() . "/$stylesheet";
  19         return apply_filters('stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet);
  20 }
  21
  22 function get_stylesheet_uri() {
  23         $stylesheet_dir_uri = get_stylesheet_directory_uri();
  24         $stylesheet_uri = $stylesheet_dir_uri . "/style.css";
  25         return apply_filters('stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
  26 }
  27
  28 function get_locale_stylesheet_uri() {
  29         global $wp_locale;
  30         $stylesheet_dir_uri = get_stylesheet_directory_uri();
  31         $dir = get_stylesheet_directory();
  32         $locale = get_locale();
  33         if ( file_exists("$dir/$locale.css") )
  34                 $stylesheet_uri = "$stylesheet_dir_uri/$locale.css";
  35         elseif ( !empty($wp_locale->text_direction) && file_exists("$dir/{$wp_locale->text_direction}.css") )
  36                 $stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css";
  37         else
  38                 $stylesheet_uri = '';
  39         return apply_filters('locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri);
  40 }
  41
  42 function get_template() {
  43         return apply_filters('template', get_option('template'));
  44 }
  45
  46 function get_template_directory() {
  47         $template = get_template();
  48         $template_dir = get_theme_root() . "/$template";
  49         return apply_filters('template_directory', $template_dir, $template);
  50 }
  51
  52 function get_template_directory_uri() {
  53         $template = get_template();
  54         $template_dir_uri = get_theme_root_uri() . "/$template";
  55         return apply_filters('template_directory_uri', $template_dir_uri, $template);
  56 }
  57
  58 function get_theme_data( $theme_file ) {
  59         $themes_allowed_tags = array(
  60                 'a' => array(
  61                         'href' => array(),'title' => array()
  62                         ),
  63                 'abbr' => array(
  64                         'title' => array()
  65                         ),
  66                 'acronym' => array(
  67                         'title' => array()
  68                         ),
  69                 'code' => array(),
  70                 'em' => array(),
  71                 'strong' => array()
  72         );
  73
  74         $theme_data = implode( '', file( $theme_file ) );
  75         $theme_data = str_replace ( '\r', '\n', $theme_data );
  76         preg_match( '|Theme Name:(.*)$|mi', $theme_data, $theme_name );
  77         preg_match( '|Theme URI:(.*)$|mi', $theme_data, $theme_uri );
  78         preg_match( '|Description:(.*)$|mi', $theme_data, $description );
  79         preg_match( '|Author:(.*)$|mi', $theme_data, $author_name );
  80         preg_match( '|Author URI:(.*)$|mi', $theme_data, $author_uri );
  81         preg_match( '|Template:(.*)$|mi', $theme_data, $template );
  82
  83         if ( preg_match( '|Version:(.*)|i', $theme_data, $version ) )
  84                 $version = wp_kses( trim( $version[1] ), $themes_allowed_tags );
  85         else
  86                 $version = '';
  87
  88         if ( preg_match('|Status:(.*)|i', $theme_data, $status) )
  89                 $status = wp_kses( trim( $status[1] ), $themes_allowed_tags );
  90         else
  91                 $status = 'publish';
  92
  93         $name = $theme = wp_kses( trim( $theme_name[1] ), $themes_allowed_tags );
  94         $theme_uri = clean_url( trim( $theme_uri[1] ) );
  95         $description = wptexturize( wp_kses( trim( $description[1] ), $themes_allowed_tags ) );
  96         $template = wp_kses( trim( $template[1] ), $themes_allowed_tags );
  97
  98         $author_uri = clean_url( trim( $author_uri[1] ) );
  99
 100         if ( empty( $author_uri[1] ) ) {
 101                 $author = wp_kses( trim( $author_name[1] ), $themes_allowed_tags );
 102         } else {
 103                 $author = sprintf( '<a href="%1$s" title="%2$s">%3$s</a>', $author_uri, __( 'Visit author homepage' ), wp_kses( trim( $author_name[1] ), $themes_allowed_tags ) );
 104         }
 105
 106         return array( 'Name' => $name, 'Title' => $theme, 'URI' => $theme_uri, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template, 'Status' => $status );
 107 }
 108
 109 function get_themes() {
 110         global $wp_themes, $wp_broken_themes;
 111
 112         if ( isset($wp_themes) )
 113                 return $wp_themes;
 114
 115         $themes = array();
 116         $wp_broken_themes = array();
 117         $theme_loc = $theme_root = get_theme_root();
 118         if ( '/' != ABSPATH ) // don't want to replace all forward slashes, see Trac #4541
 119                 $theme_loc = str_replace(ABSPATH, '', $theme_root);
 120
 121         // Files in wp-content/themes directory and one subdir down
 122         $themes_dir = @ opendir($theme_root);
 123         if ( !$themes_dir )
 124                 return false;
 125
 126         while ( ($theme_dir = readdir($themes_dir)) !== false ) {
 127                 if ( is_dir($theme_root . '/' . $theme_dir) && is_readable($theme_root . '/' . $theme_dir) ) {
 128                         if ( $theme_dir{0} == '.' || $theme_dir == '..' || $theme_dir == 'CVS' )
 129                                 continue;
 130                         $stylish_dir = @ opendir($theme_root . '/' . $theme_dir);
 131                         $found_stylesheet = false;
 132                         while ( ($theme_file = readdir($stylish_dir)) !== false ) {
 133                                 if ( $theme_file == 'style.css' ) {
 134                                         $theme_files[] = $theme_dir . '/' . $theme_file;
 135                                         $found_stylesheet = true;
 136                                         break;
 137                                 }
 138                         }
 139                         @closedir($stylish_dir);
 140                         if ( !$found_stylesheet ) { // look for themes in that dir
 141                                 $subdir = "$theme_root/$theme_dir";
 142                                 $subdir_name = $theme_dir;
 143                                 $theme_subdir = @ opendir( $subdir );
 144                                 while ( ($theme_dir = readdir($theme_subdir)) !== false ) {
 145                                         if ( is_dir( $subdir . '/' . $theme_dir) && is_readable($subdir . '/' . $theme_dir) ) {
 146                                                 if ( $theme_dir{0} == '.' || $theme_dir == '..' || $theme_dir == 'CVS' )
 147                                                         continue;
 148                                                 $stylish_dir = @ opendir($subdir . '/' . $theme_dir);
 149                                                 $found_stylesheet = false;
 150                                                 while ( ($theme_file = readdir($stylish_dir)) !== false ) {
 151                                                         if ( $theme_file == 'style.css' ) {
 152                                                                 $theme_files[] = $subdir_name . '/' . $theme_dir . '/' . $theme_file;
 153                                                                 $found_stylesheet = true;
 154                                                                 break;
 155                                                         }
 156                                                 }
 157                                                 @closedir($stylish_dir);
 158                                         }
 159                                 }
 160                                 @closedir($theme_subdir);
 161                                 $wp_broken_themes[$theme_dir] = array('Name' => $theme_dir, 'Title' => $theme_dir, 'Description' => __('Stylesheet is missing.'));
 162                         }
 163                 }
 164         }
 165         @closedir($theme_dir);
 166
 167         if ( !$themes_dir || !$theme_files )
 168                 return $themes;
 169
 170         sort($theme_files);
 171
 172         foreach ( (array) $theme_files as $theme_file ) {
 173                 if ( !is_readable("$theme_root/$theme_file") ) {
 174                         $wp_broken_themes[$theme_file] = array('Name' => $theme_file, 'Title' => $theme_file, 'Description' => __('File not readable.'));
 175                         continue;
 176                 }
 177
 178                 $theme_data = get_theme_data("$theme_root/$theme_file");
 179
 180                 $name        = $theme_data['Name'];
 181                 $title       = $theme_data['Title'];
 182                 $description = wptexturize($theme_data['Description']);
 183                 $version     = $theme_data['Version'];
 184                 $author      = $theme_data['Author'];
 185                 $template    = $theme_data['Template'];
 186                 $stylesheet  = dirname($theme_file);
 187
 188                 $screenshot = false;
 189                 foreach ( array('png', 'gif', 'jpg', 'jpeg') as $ext ) {
 190                         if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) {
 191                                 $screenshot = "screenshot.$ext";
 192                                 break;
 193                         }
 194                 }
 195
 196                 if ( empty($name) ) {
 197                         $name = dirname($theme_file);
 198                         $title = $name;
 199                 }
 200
 201                 if ( empty($template) ) {
 202                         if ( file_exists(dirname("$theme_root/$theme_file/index.php")) )
 203                                 $template = dirname($theme_file);
 204                         else
 205                                 continue;
 206                 }
 207
 208                 $template = trim($template);
 209
 210                 if ( !file_exists("$theme_root/$template/index.php") ) {
 211                         $parent_dir = dirname(dirname($theme_file));
 212                         if ( file_exists("$theme_root/$parent_dir/$template/index.php") ) {
 213                                 $template = "$parent_dir/$template";
 214                         } else {
 215                                 $wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.'));
 216                                 continue;
 217                         }
 218                 }
 219
 220                 $stylesheet_files = array();
 221                 $stylesheet_dir = @ dir("$theme_root/$stylesheet");
 222                 if ( $stylesheet_dir ) {
 223                         while ( ($file = $stylesheet_dir->read()) !== false ) {
 224                                 if ( !preg_match('|^\.+$|', $file) && preg_match('|\.css$|', $file) )
 225                                         $stylesheet_files[] = "$theme_loc/$stylesheet/$file";
 226                         }
 227                 }
 228
 229                 $template_files = array();
 230                 $template_dir = @ dir("$theme_root/$template");
 231                 if ( $template_dir ) {
 232                         while(($file = $template_dir->read()) !== false) {
 233                                 if ( !preg_match('|^\.+$|', $file) && preg_match('|\.php$|', $file) )
 234                                         $template_files[] = "$theme_loc/$template/$file";
 235                         }
 236                 }
 237
 238                 $template_dir = dirname($template_files[0]);
 239                 $stylesheet_dir = dirname($stylesheet_files[0]);
 240
 241                 if ( empty($template_dir) )
 242                         $template_dir = '/';
 243                 if ( empty($stylesheet_dir) )
 244                         $stylesheet_dir = '/';
 245
 246                 // Check for theme name collision.  This occurs if a theme is copied to
 247                 // a new theme directory and the theme header is not updated.  Whichever
 248                 // theme is first keeps the name.  Subsequent themes get a suffix applied.
 249                 // The Default and Classic themes always trump their pretenders.
 250                 if ( isset($themes[$name]) ) {
 251                         if ( ('WordPress Default' == $name || 'WordPress Classic' == $name) &&
 252                                          ('default' == $stylesheet || 'classic' == $stylesheet) ) {
 253                                 // If another theme has claimed to be one of our default themes, move
 254                                 // them aside.
 255                                 $suffix = $themes[$name]['Stylesheet'];
 256                                 $new_name = "$name/$suffix";
 257                                 $themes[$new_name] = $themes[$name];
 258                                 $themes[$new_name]['Name'] = $new_name;
 259                         } else {
 260                                 $name = "$name/$stylesheet";
 261                         }
 262                 }
 263
 264                 $themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template, 'Stylesheet' => $stylesheet, 'Template Files' => $template_files, 'Stylesheet Files' => $stylesheet_files, 'Template Dir' => $template_dir, 'Stylesheet Dir' => $stylesheet_dir, 'Status' => $theme_data['Status'], 'Screenshot' => $screenshot);
 265         }
 266
 267         // Resolve theme dependencies.
 268         $theme_names = array_keys($themes);
 269
 270         foreach ( (array) $theme_names as $theme_name ) {
 271                 $themes[$theme_name]['Parent Theme'] = '';
 272                 if ( $themes[$theme_name]['Stylesheet'] != $themes[$theme_name]['Template'] ) {
 273                         foreach ( (array) $theme_names as $parent_theme_name ) {
 274                                 if ( ($themes[$parent_theme_name]['Stylesheet'] == $themes[$parent_theme_name]['Template']) && ($themes[$parent_theme_name]['Template'] == $themes[$theme_name]['Template']) ) {
 275                                         $themes[$theme_name]['Parent Theme'] = $themes[$parent_theme_name]['Name'];
 276                                         break;
 277                                 }
 278                         }
 279                 }
 280         }
 281
 282         $wp_themes = $themes;
 283
 284         return $themes;
 285 }
 286
 287 function get_theme($theme) {
 288         $themes = get_themes();
 289
 290         if ( array_key_exists($theme, $themes) )
 291                 return $themes[$theme];
 292
 293         return NULL;
 294 }
 295
 296 function get_current_theme() {
 297         $themes = get_themes();
 298         $theme_names = array_keys($themes);
 299         $current_template = get_option('template');
 300         $current_stylesheet = get_option('stylesheet');
 301         $current_theme = 'WordPress Default';
 302
 303         if ( $themes ) {
 304                 foreach ( (array) $theme_names as $theme_name ) {
 305                         if ( $themes[$theme_name]['Stylesheet'] == $current_stylesheet &&
 306                                         $themes[$theme_name]['Template'] == $current_template ) {
 307                                 $current_theme = $themes[$theme_name]['Name'];
 308                                 break;
 309                         }
 310                 }
 311         }
 312
 313         return $current_theme;
 314 }
 315
 316 function get_theme_root() {
 317         return apply_filters('theme_root', ABSPATH . "wp-content/themes");
 318 }
 319
 320 function get_theme_root_uri() {
 321         return apply_filters('theme_root_uri', get_option('siteurl') . "/wp-content/themes", get_option('siteurl'));
 322 }
 323
 324 function get_query_template($type) {
 325         $template = '';
 326         if ( file_exists(TEMPLATEPATH . "/{$type}.php") )
 327                 $template = TEMPLATEPATH . "/{$type}.php";
 328
 329         return apply_filters("{$type}_template", $template);
 330 }
 331
 332 function get_404_template() {
 333         return get_query_template('404');
 334 }
 335
 336 function get_archive_template() {
 337         return get_query_template('archive');
 338 }
 339
 340 function get_author_template() {
 341         return get_query_template('author');
 342 }
 343
 344 function get_category_template() {
 345         $template = '';
 346         if ( file_exists(TEMPLATEPATH . "/category-" . get_query_var('cat') . '.php') )
 347                 $template = TEMPLATEPATH . "/category-" . get_query_var('cat') . '.php';
 348         elseif ( file_exists(TEMPLATEPATH . "/category.php") )
 349                 $template = TEMPLATEPATH . "/category.php";
 350
 351         return apply_filters('category_template', $template);
 352 }
 353
 354 function get_tag_template() {
 355         $template = '';
 356         if ( file_exists(TEMPLATEPATH . "/tag-" . get_query_var('tag') . '.php') )
 357                 $template = TEMPLATEPATH . "/tag-" . get_query_var('tag') . '.php';
 358         elseif ( file_exists(TEMPLATEPATH . "/tag.php") )
 359                 $template = TEMPLATEPATH . "/tag.php";
 360
 361         return apply_filters('tag_template', $template);
 362 }
 363
 364
 365 function get_date_template() {
 366         return get_query_template('date');
 367 }
 368
 369 function get_home_template() {
 370         $template = '';
 371
 372         if ( file_exists(TEMPLATEPATH . "/home.php") )
 373                 $template = TEMPLATEPATH . "/home.php";
 374         elseif ( file_exists(TEMPLATEPATH . "/index.php") )
 375                 $template = TEMPLATEPATH . "/index.php";
 376
 377         return apply_filters('home_template', $template);
 378 }
 379
 380 function get_page_template() {
 381         global $wp_query;
 382
 383         $id = (int) $wp_query->post->ID;
 384         $template = get_post_meta($id, '_wp_page_template', true);
 385
 386         if ( 'default' == $template )
 387                 $template = '';
 388
 389         if ( !empty($template) && file_exists(TEMPLATEPATH . "/$template") )
 390                 $template = TEMPLATEPATH . "/$template";
 391         elseif ( file_exists(TEMPLATEPATH . "/page.php") )
 392                 $template = TEMPLATEPATH . "/page.php";
 393         else
 394                 $template = '';
 395
 396         return apply_filters('page_template', $template);
 397 }
 398
 399 function get_paged_template() {
 400         return get_query_template('paged');
 401 }
 402
 403 function get_search_template() {
 404         return get_query_template('search');
 405 }
 406
 407 function get_single_template() {
 408         return get_query_template('single');
 409 }
 410
 411 function get_attachment_template() {
 412         global $posts;
 413         $type = explode('/', $posts[0]->post_mime_type);
 414         if ( $template = get_query_template($type[0]) )
 415                 return $template;
 416         elseif ( $template = get_query_template($type[1]) )
 417                 return $template;
 418         elseif ( $template = get_query_template("$type[0]_$type[1]") )
 419                 return $template;
 420         else
 421                 return get_query_template('attachment');
 422 }
 423
 424 function get_comments_popup_template() {
 425         if ( file_exists( TEMPLATEPATH . '/comments-popup.php') )
 426                 $template = TEMPLATEPATH . '/comments-popup.php';
 427         else
 428                 $template = get_theme_root() . '/default/comments-popup.php';
 429
 430         return apply_filters('comments_popup_template', $template);
 431 }
 432
 433 function load_template($_template_file) {
 434         global $posts, $post, $wp_did_header, $wp_did_template_redirect, $wp_query,
 435                 $wp_rewrite, $wpdb, $wp_version, $wp, $id, $comment, $user_ID;
 436
 437         if ( is_array($wp_query->query_vars) )
 438                 extract($wp_query->query_vars, EXTR_SKIP);
 439
 440         require_once($_template_file);
 441 }
 442
 443 function locale_stylesheet() {
 444         $stylesheet = get_locale_stylesheet_uri();
 445         if ( empty($stylesheet) )
 446                 return;
 447         echo '<link rel="stylesheet" href="' . $stylesheet . '" type="text/css" media="screen" />';
 448 }
 449
 450 function validate_current_theme() {
 451         // Don't validate during an install/upgrade.
 452         if ( defined('WP_INSTALLING') )
 453                 return true;
 454
 455         if ( get_template() != 'default' && !file_exists(get_template_directory() . '/index.php') ) {
 456                 update_option('template', 'default');
 457                 update_option('stylesheet', 'default');
 458                 do_action('switch_theme', 'Default');
 459                 return false;
 460         }
 461
 462         if ( get_stylesheet() != 'default' && !file_exists(get_template_directory() . '/style.css') ) {
 463                 update_option('template', 'default');
 464                 update_option('stylesheet', 'default');
 465                 do_action('switch_theme', 'Default');
 466                 return false;
 467         }
 468
 469         return true;
 470 }
 471
 472 function get_theme_mod($name, $default = false) {
 473         $theme = get_current_theme();
 474
 475         $mods = get_option("mods_$theme");
 476
 477         if ( isset($mods[$name]) )
 478                 return apply_filters( "theme_mod_$name", $mods[$name] );
 479
 480         return apply_filters( "theme_mod_$name", sprintf($default, get_template_directory_uri()) );
 481 }
 482
 483 function set_theme_mod($name, $value) {
 484         $theme = get_current_theme();
 485
 486         $mods = get_option("mods_$theme");
 487
 488         $mods[$name] = $value;
 489
 490         update_option("mods_$theme", $mods);
 491         wp_cache_delete("mods_$theme", 'options');
 492 }
 493
 494 function remove_theme_mod( $name ) {
 495         $theme = get_current_theme();
 496
 497         $mods = get_option("mods_$theme");
 498
 499         if ( !isset($mods[$name]) )
 500                 return;
 501
 502         unset($mods[$name]);
 503
 504         if ( empty($mods) )
 505                 return remove_theme_mods();
 506
 507         update_option("mods_$theme", $mods);
 508         wp_cache_delete("mods_$theme", 'options');
 509 }
 510
 511 function remove_theme_mods() {
 512         $theme = get_current_theme();
 513
 514         delete_option("mods_$theme");
 515 }
 516
 517 function get_header_textcolor() {
 518         return get_theme_mod('header_textcolor', HEADER_TEXTCOLOR);
 519 }
 520
 521 function header_textcolor() {
 522         echo get_header_textcolor();
 523 }
 524
 525 function get_header_image() {
 526         return get_theme_mod('header_image', HEADER_IMAGE);
 527 }
 528
 529 function header_image() {
 530         echo get_header_image();
 531 }
 532
 533 function add_custom_image_header($header_callback, $admin_header_callback) {
 534         if ( ! empty($header_callback) )
 535                 add_action('wp_head', $header_callback);
 536
 537         if ( ! is_admin() )
 538                 return;
 539         require_once(ABSPATH . 'wp-admin/custom-header.php');
 540         $GLOBALS['custom_image_header'] =& new Custom_Image_Header($admin_header_callback);
 541         add_action('admin_menu', array(&$GLOBALS['custom_image_header'], 'init'));
 542 }
 543
 544 ?>