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get_themes

Definition:
function get_themes() {}

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 $wp_broken_themes global, which is displayed on the theme list in the administration panels.

Return values

returns:Theme list with theme data.

Source code

function get_themes() {

	global $wp_themes, $wp_broken_themes;



	if ( isset($wp_themes) )

		return $wp_themes;



	if ( !$theme_files = search_theme_directories() )

		return false;



	asort( $theme_files );



	$wp_themes = array();



	foreach ( (array) $theme_files as $theme_file ) {

		$theme_root = $theme_file['theme_root'];

		$theme_file = $theme_file['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;

		}



		$parent_template = $template;



		if ( empty($template) ) {

			if ( file_exists("$theme_root/$stylesheet/index.php") )

				$template = $stylesheet;

			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";

				$template_directory = "$theme_root/$template";

			} else {

				/**

				 * The parent theme doesn't exist in the current theme's folder or sub folder

				 * so lets use the theme root for the parent template.

				 */

				if ( isset($theme_files[$template]) && file_exists( $theme_files[$template]['theme_root'] . "/$template/index.php" ) ) {

					$template_directory = $theme_files[$template]['theme_root'] . "/$template";

				} else {

					if ( empty( $parent_template) )

						$wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.'), 'error' => 'no_template');

					else

						$wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => sprintf( __('The parent theme is missing. Please install the "%s" parent theme.'),  $parent_template ), 'error' => 'no_parent', 'parent' => $parent_template );

					continue;

				}



			}

		} else {

			$template_directory = trim( $theme_root . '/' . $template );

		}



		$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_root/$stylesheet/$file";

					elseif ( preg_match('|\.php$|', $file) )

						$template_files[] = "$theme_root/$stylesheet/$file";

				}

			}

			@ $stylesheet_dir->close();

		}



		$template_dir = @ dir("$template_directory");

		if ( $template_dir ) {

			while ( ($file = $template_dir->read()) !== false ) {

				if ( preg_match('|^\.+$|', $file) )

					continue;

				if ( preg_match('|\.php$|', $file) ) {

					$template_files[] = "$template_directory/$file";

				} elseif ( is_dir("$template_directory/$file") ) {

					$template_subdir = @ dir("$template_directory/$file");

					if ( !$template_subdir )

						continue;

					while ( ($subfile = $template_subdir->read()) !== false ) {

						if ( preg_match('|^\.+$|', $subfile) )

							continue;

						if ( preg_match('|\.php$|', $subfile) )

							$template_files[] = "$template_directory/$file/$subfile";

					}

					@ $template_subdir->close();

				}

			}

			@ $template_dir->close();

		}



		//Make unique and remove duplicates when stylesheet and template are the same i.e. most themes

		$template_files = array_unique($template_files);

		$stylesheet_files = array_unique($stylesheet_files);



		$template_dir = $template_directory;

		$stylesheet_dir = $theme_root . '/' . $stylesheet;



		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 Twenty Eleven, Twenty Ten, Default and Classic themes always trump

		// their pretenders.

		if ( isset($wp_themes[$name]) ) {

			$trump_cards = array(

				'classic'      => 'WordPress Classic',

				'default'      => 'WordPress Default',

				'twentyten'    => 'Twenty Ten',

				'twentyeleven' => 'Twenty Eleven',

			);

			if ( isset( $trump_cards[ $stylesheet ] ) && $name == $trump_cards[ $stylesheet ] ) {

				// If another theme has claimed to be one of our default themes, move

				// them aside.

				$suffix = $wp_themes[$name]['Stylesheet'];

				$new_name = "$name/$suffix";

				$wp_themes[$new_name] = $wp_themes[$name];

				$wp_themes[$new_name]['Name'] = $new_name;

			} else {

				$name = "$name/$stylesheet";

			}

		}



		$theme_roots[$stylesheet] = str_replace( WP_CONTENT_DIR, '', $theme_root );

		$wp_themes[$name] = array(

			'Name' => $name,

			'Title' => $title,

			'Description' => $description,

			'Author' => $author,

			'Author Name' => $theme_data['AuthorName'],

			'Author URI' => $theme_data['AuthorURI'],

			'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'],

			'Theme Root' => $theme_root,

			'Theme Root URI' => str_replace( WP_CONTENT_DIR, content_url(), $theme_root ),

		);

	}



	unset($theme_files);



	/* Store theme roots in the DB */

	if ( get_site_transient( 'theme_roots' ) != $theme_roots )

		set_site_transient( 'theme_roots', $theme_roots, 7200 ); // cache for two hours

	unset($theme_roots);



	/* Resolve theme dependencies. */

	$theme_names = array_keys( $wp_themes );

	foreach ( (array) $theme_names as $theme_name ) {

		$wp_themes[$theme_name]['Parent Theme'] = '';

		if ( $wp_themes[$theme_name]['Stylesheet'] != $wp_themes[$theme_name]['Template'] ) {

			foreach ( (array) $theme_names as $parent_theme_name ) {

				if ( ($wp_themes[$parent_theme_name]['Stylesheet'] == $wp_themes[$parent_theme_name]['Template']) && ($wp_themes[$parent_theme_name]['Template'] == $wp_themes[$theme_name]['Template']) ) {

					$wp_themes[$theme_name]['Parent Theme'] = $wp_themes[$parent_theme_name]['Name'];

					break;

				}

			}

		}

	}



	return $wp_themes;

}

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