diff -r 000000000000 -r 03b0d1493584 web/wp-includes/theme.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/web/wp-includes/theme.php Wed Dec 23 17:55:33 2009 +0000 @@ -0,0 +1,1155 @@ +text_direction) && file_exists("$dir/{$wp_locale->text_direction}.css") ) + $stylesheet_uri = "$stylesheet_dir_uri/{$wp_locale->text_direction}.css"; + else + $stylesheet_uri = ''; + return apply_filters('locale_stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri); +} + +/** + * Retrieve name of the current theme. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'template' filter on template option. + * + * @return string Template name. + */ +function get_template() { + return apply_filters('template', get_option('template')); +} + +/** + * Retrieve current theme directory. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'template_directory' filter on template directory path and template name. + * + * @return string Template directory path. + */ +function get_template_directory() { + $template = get_template(); + $template_dir = get_theme_root() . "/$template"; + return apply_filters('template_directory', $template_dir, $template); +} + +/** + * Retrieve theme directory URI. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'template_directory_uri' filter on template directory URI path and template name. + * + * @return string Template directory URI. + */ +function get_template_directory_uri() { + $template = get_template(); + $template_dir_uri = get_theme_root_uri() . "/$template"; + return apply_filters('template_directory_uri', $template_dir_uri, $template); +} + +/** + * Retrieve theme data from parsed theme file. + * + * The description will have the tags filtered with the following HTML elements + * whitelisted. The 'a' element with the href and title + * attributes. The abbr element with the title attribute. The + * acronym element with the title attribute allowed. The + * code, em, and strong elements also allowed. + * + * The style.css file must contain theme name, theme URI, and description. The + * data can also contain author URI, author, template (parent template), + * version, status, and finally tags. Some of these are not used by WordPress + * administration panels, but are used by theme directory web sites which list + * the theme. + * + * @since 1.5.0 + * + * @param string $theme_file Theme file path. + * @return array Theme data. + */ +function get_theme_data( $theme_file ) { + $themes_allowed_tags = array( + 'a' => array( + 'href' => array(),'title' => array() + ), + 'abbr' => array( + 'title' => array() + ), + 'acronym' => array( + 'title' => array() + ), + 'code' => array(), + 'em' => array(), + 'strong' => array() + ); + + $theme_data = implode( '', file( $theme_file ) ); + $theme_data = str_replace ( '\r', '\n', $theme_data ); + if ( preg_match( '|Theme Name:(.*)$|mi', $theme_data, $theme_name ) ) + $name = $theme = wp_kses( _cleanup_header_comment($theme_name[1]), $themes_allowed_tags ); + else + $name = $theme = ''; + + if ( preg_match( '|Theme URI:(.*)$|mi', $theme_data, $theme_uri ) ) + $theme_uri = esc_url( _cleanup_header_comment($theme_uri[1]) ); + else + $theme_uri = ''; + + if ( preg_match( '|Description:(.*)$|mi', $theme_data, $description ) ) + $description = wptexturize( wp_kses( _cleanup_header_comment($description[1]), $themes_allowed_tags ) ); + else + $description = ''; + + if ( preg_match( '|Author URI:(.*)$|mi', $theme_data, $author_uri ) ) + $author_uri = esc_url( _cleanup_header_comment($author_uri[1]) ); + else + $author_uri = ''; + + if ( preg_match( '|Template:(.*)$|mi', $theme_data, $template ) ) + $template = wp_kses( _cleanup_header_comment($template[1]), $themes_allowed_tags ); + else + $template = ''; + + if ( preg_match( '|Version:(.*)|i', $theme_data, $version ) ) + $version = wp_kses( _cleanup_header_comment($version[1]), $themes_allowed_tags ); + else + $version = ''; + + if ( preg_match('|Status:(.*)|i', $theme_data, $status) ) + $status = wp_kses( _cleanup_header_comment($status[1]), $themes_allowed_tags ); + else + $status = 'publish'; + + if ( preg_match('|Tags:(.*)|i', $theme_data, $tags) ) + $tags = array_map( 'trim', explode( ',', wp_kses( _cleanup_header_comment($tags[1]), array() ) ) ); + else + $tags = array(); + + if ( preg_match( '|Author:(.*)$|mi', $theme_data, $author_name ) ) { + if ( empty( $author_uri ) ) { + $author = wp_kses( _cleanup_header_comment($author_name[1]), $themes_allowed_tags ); + } else { + $author = sprintf( '%3$s', $author_uri, __( 'Visit author homepage' ), wp_kses( _cleanup_header_comment($author_name[1]), $themes_allowed_tags ) ); + } + } else { + $author = __('Anonymous'); + } + + return array( 'Name' => $name, 'Title' => $theme, 'URI' => $theme_uri, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template, 'Status' => $status, 'Tags' => $tags ); +} + +/** + * Retrieve list of themes with theme data in theme directory. + * + * The theme is broken, if it doesn't have a parent theme and is missing either + * style.css and, or index.php. If the theme has a parent theme then it is + * broken, if it is missing style.css; index.php is optional. The broken theme + * list is saved in the {@link $wp_broken_themes} global, which is displayed on + * the theme list in the administration panels. + * + * @since 1.5.0 + * @global array $wp_broken_themes Stores the broken themes. + * @global array $wp_themes Stores the working themes. + * + * @return array Theme list with theme data. + */ +function get_themes() { + global $wp_themes, $wp_broken_themes; + + if ( isset($wp_themes) ) + return $wp_themes; + + $themes = array(); + $wp_broken_themes = array(); + $theme_loc = $theme_root = get_theme_root(); + if ( '/' != WP_CONTENT_DIR ) // don't want to replace all forward slashes, see Trac #4541 + $theme_loc = str_replace(WP_CONTENT_DIR, '', $theme_root); + + // Files in wp-content/themes directory and one subdir down + $themes_dir = @ opendir($theme_root); + if ( !$themes_dir ) + return false; + + while ( ($theme_dir = readdir($themes_dir)) !== false ) { + if ( is_dir($theme_root . '/' . $theme_dir) && is_readable($theme_root . '/' . $theme_dir) ) { + if ( $theme_dir{0} == '.' || $theme_dir == '..' || $theme_dir == 'CVS' ) + continue; + $stylish_dir = @ opendir($theme_root . '/' . $theme_dir); + $found_stylesheet = false; + while ( ($theme_file = readdir($stylish_dir)) !== false ) { + if ( $theme_file == 'style.css' ) { + $theme_files[] = $theme_dir . '/' . $theme_file; + $found_stylesheet = true; + break; + } + } + @closedir($stylish_dir); + if ( !$found_stylesheet ) { // look for themes in that dir + $subdir = "$theme_root/$theme_dir"; + $subdir_name = $theme_dir; + $theme_subdir = @ opendir( $subdir ); + while ( ($theme_dir = readdir($theme_subdir)) !== false ) { + if ( is_dir( $subdir . '/' . $theme_dir) && is_readable($subdir . '/' . $theme_dir) ) { + if ( $theme_dir{0} == '.' || $theme_dir == '..' || $theme_dir == 'CVS' ) + continue; + $stylish_dir = @ opendir($subdir . '/' . $theme_dir); + $found_stylesheet = false; + while ( ($theme_file = readdir($stylish_dir)) !== false ) { + if ( $theme_file == 'style.css' ) { + $theme_files[] = $subdir_name . '/' . $theme_dir . '/' . $theme_file; + $found_stylesheet = true; + break; + } + } + @closedir($stylish_dir); + } + } + @closedir($theme_subdir); + $wp_broken_themes[$theme_dir] = array('Name' => $theme_dir, 'Title' => $theme_dir, 'Description' => __('Stylesheet is missing.')); + } + } + } + if ( is_dir( $theme_dir ) ) + @closedir( $theme_dir ); + + if ( !$themes_dir || !$theme_files ) + return $themes; + + sort($theme_files); + + foreach ( (array) $theme_files as $theme_file ) { + if ( !is_readable("$theme_root/$theme_file") ) { + $wp_broken_themes[$theme_file] = array('Name' => $theme_file, 'Title' => $theme_file, 'Description' => __('File not readable.')); + continue; + } + + $theme_data = get_theme_data("$theme_root/$theme_file"); + + $name = $theme_data['Name']; + $title = $theme_data['Title']; + $description = wptexturize($theme_data['Description']); + $version = $theme_data['Version']; + $author = $theme_data['Author']; + $template = $theme_data['Template']; + $stylesheet = dirname($theme_file); + + $screenshot = false; + foreach ( array('png', 'gif', 'jpg', 'jpeg') as $ext ) { + if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) { + $screenshot = "screenshot.$ext"; + break; + } + } + + if ( empty($name) ) { + $name = dirname($theme_file); + $title = $name; + } + + if ( empty($template) ) { + if ( file_exists(dirname("$theme_root/$theme_file/index.php")) ) + $template = dirname($theme_file); + else + continue; + } + + $template = trim($template); + + if ( !file_exists("$theme_root/$template/index.php") ) { + $parent_dir = dirname(dirname($theme_file)); + if ( file_exists("$theme_root/$parent_dir/$template/index.php") ) { + $template = "$parent_dir/$template"; + } else { + $wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.')); + continue; + } + } + + $stylesheet_files = array(); + $template_files = array(); + + $stylesheet_dir = @ dir("$theme_root/$stylesheet"); + if ( $stylesheet_dir ) { + while ( ($file = $stylesheet_dir->read()) !== false ) { + if ( !preg_match('|^\.+$|', $file) ) { + if ( preg_match('|\.css$|', $file) ) + $stylesheet_files[] = "$theme_loc/$stylesheet/$file"; + elseif ( preg_match('|\.php$|', $file) ) + $template_files[] = "$theme_loc/$stylesheet/$file"; + } + } + @ $stylesheet_dir->close(); + } + + $template_dir = @ dir("$theme_root/$template"); + if ( $template_dir ) { + while ( ($file = $template_dir->read()) !== false ) { + if ( preg_match('|^\.+$|', $file) ) + continue; + if ( preg_match('|\.php$|', $file) ) { + $template_files[] = "$theme_loc/$template/$file"; + } elseif ( is_dir("$theme_root/$template/$file") ) { + $template_subdir = @ dir("$theme_root/$template/$file"); + while ( ($subfile = $template_subdir->read()) !== false ) { + if ( preg_match('|^\.+$|', $subfile) ) + continue; + if ( preg_match('|\.php$|', $subfile) ) + $template_files[] = "$theme_loc/$template/$file/$subfile"; + } + @ $template_subdir->close(); + } + } + @ $template_dir->close(); + } + + $template_dir = dirname($template_files[0]); + $stylesheet_dir = dirname($stylesheet_files[0]); + + if ( empty($template_dir) ) + $template_dir = '/'; + if ( empty($stylesheet_dir) ) + $stylesheet_dir = '/'; + + // Check for theme name collision. This occurs if a theme is copied to + // a new theme directory and the theme header is not updated. Whichever + // theme is first keeps the name. Subsequent themes get a suffix applied. + // The Default and Classic themes always trump their pretenders. + if ( isset($themes[$name]) ) { + if ( ('WordPress Default' == $name || 'WordPress Classic' == $name) && + ('default' == $stylesheet || 'classic' == $stylesheet) ) { + // If another theme has claimed to be one of our default themes, move + // them aside. + $suffix = $themes[$name]['Stylesheet']; + $new_name = "$name/$suffix"; + $themes[$new_name] = $themes[$name]; + $themes[$new_name]['Name'] = $new_name; + } else { + $name = "$name/$stylesheet"; + } + } + + $themes[$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, 'Tags' => $theme_data['Tags']); + } + + // Resolve theme dependencies. + $theme_names = array_keys($themes); + + foreach ( (array) $theme_names as $theme_name ) { + $themes[$theme_name]['Parent Theme'] = ''; + if ( $themes[$theme_name]['Stylesheet'] != $themes[$theme_name]['Template'] ) { + foreach ( (array) $theme_names as $parent_theme_name ) { + if ( ($themes[$parent_theme_name]['Stylesheet'] == $themes[$parent_theme_name]['Template']) && ($themes[$parent_theme_name]['Template'] == $themes[$theme_name]['Template']) ) { + $themes[$theme_name]['Parent Theme'] = $themes[$parent_theme_name]['Name']; + break; + } + } + } + } + + $wp_themes = $themes; + + return $themes; +} + +/** + * Retrieve theme data. + * + * @since 1.5.0 + * + * @param string $theme Theme name. + * @return array|null Null, if theme name does not exist. Theme data, if exists. + */ +function get_theme($theme) { + $themes = get_themes(); + + if ( array_key_exists($theme, $themes) ) + return $themes[$theme]; + + return null; +} + +/** + * Retrieve current theme display name. + * + * If the 'current_theme' option has already been set, then it will be returned + * instead. If it is not set, then each theme will be iterated over until both + * the current stylesheet and current template name. + * + * @since 1.5.0 + * + * @return string + */ +function get_current_theme() { + if ( $theme = get_option('current_theme') ) + return $theme; + + $themes = get_themes(); + $theme_names = array_keys($themes); + $current_template = get_option('template'); + $current_stylesheet = get_option('stylesheet'); + $current_theme = 'WordPress Default'; + + if ( $themes ) { + foreach ( (array) $theme_names as $theme_name ) { + if ( $themes[$theme_name]['Stylesheet'] == $current_stylesheet && + $themes[$theme_name]['Template'] == $current_template ) { + $current_theme = $themes[$theme_name]['Name']; + break; + } + } + } + + update_option('current_theme', $current_theme); + + return $current_theme; +} + +/** + * Retrieve path to themes directory. + * + * Does not have trailing slash. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'theme_root' filter on path. + * + * @return string Theme path. + */ +function get_theme_root() { + return apply_filters('theme_root', WP_CONTENT_DIR . "/themes"); +} + +/** + * Retrieve URI for themes directory. + * + * Does not have trailing slash. + * + * @since 1.5.0 + * + * @return string Themes URI. + */ +function get_theme_root_uri() { + return apply_filters('theme_root_uri', content_url('themes'), get_option('siteurl')); +} + +/** + * Retrieve path to file without the use of extension. + * + * Used to quickly retrieve the path of file without including the file + * extension. It will also check the parent template, if the file exists, with + * the use of {@link locate_template()}. Allows for more generic file location + * without the use of the other get_*_template() functions. + * + * Can be used with include() or require() to retrieve path. + * + * if( '' != get_query_template( '404' ) ) + * include( get_query_template( '404' ) ); + * + * or the same can be accomplished with + * + * if( '' != get_404_template() ) + * include( get_404_template() ); + * + * + * @since 1.5.0 + * + * @param string $type Filename without extension. + * @return string Full path to file. + */ +function get_query_template($type) { + $type = preg_replace( '|[^a-z0-9-]+|', '', $type ); + return apply_filters("{$type}_template", locate_template(array("{$type}.php"))); +} + +/** + * Retrieve path of 404 template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_404_template() { + return get_query_template('404'); +} + +/** + * Retrieve path of archive template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_archive_template() { + return get_query_template('archive'); +} + +/** + * Retrieve path of author template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_author_template() { + return get_query_template('author'); +} + +/** + * Retrieve path of category template in current or parent template. + * + * Works by retrieving the current category ID, for example 'category-1.php' and + * will fallback to category.php template, if the ID category file doesn't + * exist. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'category_template' on file path of category template. + * + * @return string + */ +function get_category_template() { + $template = locate_template(array("category-" . absint( get_query_var('cat') ) . '.php', 'category.php')); + return apply_filters('category_template', $template); +} + +/** + * Retrieve path of tag template in current or parent template. + * + * Works by retrieving the current tag name, for example 'tag-wordpress.php' and will + * fallback to tag.php template, if the name tag file doesn't exist. + * + * @since 2.3.0 + * @uses apply_filters() Calls 'tag_template' on file path of tag template. + * + * @return string + */ +function get_tag_template() { + $template = locate_template(array("tag-" . get_query_var('tag') . '.php', 'tag.php')); + return apply_filters('tag_template', $template); +} + +/** + * Retrieve path of taxonomy template in current or parent template. + * + * Retrieves the taxonomy and term, if term is available. The template is + * prepended with 'taxonomy-' and followed by both the taxonomy string and + * the taxonomy string followed by a dash and then followed by the term. + * + * The taxonomy and term template is checked and used first, if it exists. + * Second, just the taxonomy template is checked, and then finally, taxonomy.php + * template is used. If none of the files exist, then it will fall back on to + * index.php. + * + * @since unknown (2.6.0 most likely) + * @uses apply_filters() Calls 'taxonomy_template' filter on found path. + * + * @return string + */ +function get_taxonomy_template() { + $taxonomy = get_query_var('taxonomy'); + $term = get_query_var('term'); + + $templates = array(); + if ( $taxonomy && $term ) + $templates[] = "taxonomy-$taxonomy-$term.php"; + if ( $taxonomy ) + $templates[] = "taxonomy-$taxonomy.php"; + + $templates[] = "taxonomy.php"; + + $template = locate_template($templates); + return apply_filters('taxonomy_template', $template); +} + +/** + * Retrieve path of date template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_date_template() { + return get_query_template('date'); +} + +/** + * Retrieve path of home template in current or parent template. + * + * Attempts to locate 'home.php' first before falling back to 'index.php'. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'home_template' on file path of home template. + * + * @return string + */ +function get_home_template() { + $template = locate_template(array('home.php', 'index.php')); + return apply_filters('home_template', $template); +} + +/** + * Retrieve path of page template in current or parent template. + * + * First attempt is to look for the file in the '_wp_page_template' page meta + * data. The second attempt, if the first has a file and is not empty, is to + * look for 'page.php'. + * + * @since 1.5.0 + * + * @return string + */ +function get_page_template() { + global $wp_query; + + $id = (int) $wp_query->post->ID; + $template = get_post_meta($id, '_wp_page_template', true); + + if ( 'default' == $template ) + $template = ''; + + $templates = array(); + if ( !empty($template) && !validate_file($template) ) + $templates[] = $template; + + $templates[] = "page.php"; + + return apply_filters('page_template', locate_template($templates)); +} + +/** + * Retrieve path of paged template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_paged_template() { + return get_query_template('paged'); +} + +/** + * Retrieve path of search template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_search_template() { + return get_query_template('search'); +} + +/** + * Retrieve path of single template in current or parent template. + * + * @since 1.5.0 + * + * @return string + */ +function get_single_template() { + return get_query_template('single'); +} + +/** + * Retrieve path of attachment template in current or parent template. + * + * The attachment path first checks if the first part of the mime type exists. + * The second check is for the second part of the mime type. The last check is + * for both types separated by an underscore. If neither are found then the file + * 'attachment.php' is checked and returned. + * + * Some examples for the 'text/plain' mime type are 'text.php', 'plain.php', and + * finally 'text_plain.php'. + * + * @since 2.0.0 + * + * @return string + */ +function get_attachment_template() { + global $posts; + $type = explode('/', $posts[0]->post_mime_type); + if ( $template = get_query_template($type[0]) ) + return $template; + elseif ( $template = get_query_template($type[1]) ) + return $template; + elseif ( $template = get_query_template("$type[0]_$type[1]") ) + return $template; + else + return get_query_template('attachment'); +} + +/** + * Retrieve path of comment popup template in current or parent template. + * + * Checks for comment popup template in current template, if it exists or in the + * parent template. If it doesn't exist, then it retrieves the comment-popup.php + * file from the default theme. The default theme must then exist for it to + * work. + * + * @since 1.5.0 + * @uses apply_filters() Calls 'comments_popup_template' filter on path. + * + * @return string + */ +function get_comments_popup_template() { + $template = locate_template(array("comments-popup.php")); + if ('' == $template) + $template = get_theme_root() . '/default/comments-popup.php'; + + return apply_filters('comments_popup_template', $template); +} + +/** + * Retrieve the name of the highest priority template file that exists. + * + * Searches in the STYLESHEETPATH before TEMPLATEPATH so that themes which + * inherit from a parent theme can just overload one file. + * + * @since 2.7.0 + * + * @param array $template_names Array of template files to search for in priority order. + * @param bool $load If true the template file will be loaded if it is found. + * @return string The template filename if one is located. + */ +function locate_template($template_names, $load = false) { + if (!is_array($template_names)) + return ''; + + $located = ''; + foreach($template_names as $template_name) { + if ( file_exists(STYLESHEETPATH . '/' . $template_name)) { + $located = STYLESHEETPATH . '/' . $template_name; + break; + } else if ( file_exists(TEMPLATEPATH . '/' . $template_name) ) { + $located = TEMPLATEPATH . '/' . $template_name; + break; + } + } + + if ($load && '' != $located) + load_template($located); + + return $located; +} + +/** + * Require once the template file with WordPress environment. + * + * The globals are set up for the template file to ensure that the WordPress + * environment is available from within the function. The query variables are + * also available. + * + * @since 1.5.0 + * + * @param string $_template_file Path to template file. + */ +function load_template($_template_file) { + global $posts, $post, $wp_did_header, $wp_did_template_redirect, $wp_query, $wp_rewrite, $wpdb, $wp_version, $wp, $id, $comment, $user_ID; + + if ( is_array($wp_query->query_vars) ) + extract($wp_query->query_vars, EXTR_SKIP); + + require_once($_template_file); +} + +/** + * Display localized stylesheet link element. + * + * @since 2.1.0 + */ +function locale_stylesheet() { + $stylesheet = get_locale_stylesheet_uri(); + if ( empty($stylesheet) ) + return; + echo ''; +} + +/** + * Start preview theme output buffer. + * + * Will only preform task if the user has permissions and template and preview + * query variables exist. + * + * @since 2.5.0 + */ +function preview_theme() { + if ( ! (isset($_GET['template']) && isset($_GET['preview'])) ) + return; + + if ( !current_user_can( 'switch_themes' ) ) + return; + + $_GET['template'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['template']); + + if ( validate_file($_GET['template']) ) + return; + + add_filter( 'template', '_preview_theme_template_filter' ); + + if ( isset($_GET['stylesheet']) ) { + $_GET['stylesheet'] = preg_replace('|[^a-z0-9_./-]|i', '', $_GET['stylesheet']); + if ( validate_file($_GET['stylesheet']) ) + return; + add_filter( 'stylesheet', '_preview_theme_stylesheet_filter' ); + } + + // Prevent theme mods to current theme being used on theme being previewed + add_filter( 'pre_option_mods_' . get_current_theme(), create_function( '', "return array();" ) ); + + ob_start( 'preview_theme_ob_filter' ); +} +add_action('setup_theme', 'preview_theme'); + +/** + * Private function to modify the current template when previewing a theme + * + * @return string + */ +function _preview_theme_template_filter() { + return isset($_GET['template']) ? $_GET['template'] : ''; +} + +/** + * Private function to modify the current stylesheet when previewing a theme + * + * @return string + */ +function _preview_theme_stylesheet_filter() { + return isset($_GET['stylesheet']) ? $_GET['stylesheet'] : ''; +} + +/** + * Callback function for ob_start() to capture all links in the theme. + * + * @since unknown + * @access private + * + * @param string $content + * @return string + */ +function preview_theme_ob_filter( $content ) { + return preg_replace_callback( "|()|", 'preview_theme_ob_filter_callback', $content ); +} + +/** + * Manipulates preview theme links in order to control and maintain location. + * + * Callback function for preg_replace_callback() to accept and filter matches. + * + * @since unknown + * @access private + * + * @param array $matches + * @return string + */ +function preview_theme_ob_filter_callback( $matches ) { + if ( strpos($matches[4], 'onclick') !== false ) + $matches[4] = preg_replace('#onclick=([\'"]).*?(?. (? 1, 'template' => $_GET['template'], 'stylesheet' => @$_GET['stylesheet'] ), $matches[3] ); + if ( 0 === strpos($link, 'preview=1') ) + $link = "?$link"; + return $matches[1] . esc_attr( $link ) . $matches[4]; +} + +/** + * Switches current theme to new template and stylesheet names. + * + * @since unknown + * @uses do_action() Calls 'switch_theme' action on updated theme display name. + * + * @param string $template Template name + * @param string $stylesheet Stylesheet name. + */ +function switch_theme($template, $stylesheet) { + update_option('template', $template); + update_option('stylesheet', $stylesheet); + delete_option('current_theme'); + $theme = get_current_theme(); + do_action('switch_theme', $theme); +} + +/** + * Checks that current theme files 'index.php' and 'style.css' exists. + * + * Does not check the 'default' theme. The 'default' theme should always exist + * or should have another theme renamed to that template name and directory + * path. Will switch theme to default if current theme does not validate. + * You can use the 'validate_current_theme' filter to return FALSE to + * disable this functionality. + * + * @since 1.5.0 + * + * @return bool + */ +function validate_current_theme() { + // Don't validate during an install/upgrade. + if ( defined('WP_INSTALLING') || !apply_filters( 'validate_current_theme', true ) ) + return true; + + if ( get_template() != 'default' && !file_exists(get_template_directory() . '/index.php') ) { + switch_theme('default', 'default'); + return false; + } + + if ( get_stylesheet() != 'default' && !file_exists(get_template_directory() . '/style.css') ) { + switch_theme('default', 'default'); + return false; + } + + return true; +} + +/** + * Retrieve theme modification value for the current theme. + * + * If the modification name does not exist, then the $default will be passed + * through {@link http://php.net/sprintf sprintf()} PHP function with the first + * string the template directory URI and the second string the stylesheet + * directory URI. + * + * @since 2.1.0 + * @uses apply_filters() Calls 'theme_mod_$name' filter on the value. + * + * @param string $name Theme modification name. + * @param bool|string $default + * @return string + */ +function get_theme_mod($name, $default = false) { + $theme = get_current_theme(); + + $mods = get_option("mods_$theme"); + + if ( isset($mods[$name]) ) + return apply_filters( "theme_mod_$name", $mods[$name] ); + + return apply_filters( "theme_mod_$name", sprintf($default, get_template_directory_uri(), get_stylesheet_directory_uri()) ); +} + +/** + * Update theme modification value for the current theme. + * + * @since 2.1.0 + * + * @param string $name Theme modification name. + * @param string $value theme modification value. + */ +function set_theme_mod($name, $value) { + $theme = get_current_theme(); + + $mods = get_option("mods_$theme"); + + $mods[$name] = $value; + + update_option("mods_$theme", $mods); + wp_cache_delete("mods_$theme", 'options'); +} + +/** + * Remove theme modification name from current theme list. + * + * If removing the name also removes all elements, then the entire option will + * be removed. + * + * @since 2.1.0 + * + * @param string $name Theme modification name. + * @return null + */ +function remove_theme_mod( $name ) { + $theme = get_current_theme(); + + $mods = get_option("mods_$theme"); + + if ( !isset($mods[$name]) ) + return; + + unset($mods[$name]); + + if ( empty($mods) ) + return remove_theme_mods(); + + update_option("mods_$theme", $mods); + wp_cache_delete("mods_$theme", 'options'); +} + +/** + * Remove theme modifications option for current theme. + * + * @since 2.1.0 + */ +function remove_theme_mods() { + $theme = get_current_theme(); + + delete_option("mods_$theme"); +} + +/** + * Retrieve text color for custom header. + * + * @since 2.1.0 + * @uses HEADER_TEXTCOLOR + * + * @return string + */ +function get_header_textcolor() { + return get_theme_mod('header_textcolor', HEADER_TEXTCOLOR); +} + +/** + * Display text color for custom header. + * + * @since 2.1.0 + */ +function header_textcolor() { + echo get_header_textcolor(); +} + +/** + * Retrieve header image for custom header. + * + * @since 2.1.0 + * @uses HEADER_IMAGE + * + * @return string + */ +function get_header_image() { + return get_theme_mod('header_image', HEADER_IMAGE); +} + +/** + * Display header image path. + * + * @since 2.1.0 + */ +function header_image() { + echo get_header_image(); +} + +/** + * Add callbacks for image header display. + * + * The parameter $header_callback callback will be required to display the + * content for the 'wp_head' action. The parameter $admin_header_callback + * callback will be added to Custom_Image_Header class and that will be added + * to the 'admin_menu' action. + * + * @since 2.1.0 + * @uses Custom_Image_Header Sets up for $admin_header_callback for administration panel display. + * + * @param callback $header_callback Call on 'wp_head' action. + * @param callback $admin_header_callback Call on administration panels. + */ +function add_custom_image_header($header_callback, $admin_header_callback) { + if ( ! empty($header_callback) ) + add_action('wp_head', $header_callback); + + if ( ! is_admin() ) + return; + require_once(ABSPATH . 'wp-admin/custom-header.php'); + $GLOBALS['custom_image_header'] =& new Custom_Image_Header($admin_header_callback); + add_action('admin_menu', array(&$GLOBALS['custom_image_header'], 'init')); +} + +?>