make_site_theme_from_oldschool( string $theme_name, string $template ): bool

3326function make_site_theme_from_oldschool( $theme_name, $template ) {3327	$home_path   = get_home_path();3328	$site_dir    = WP_CONTENT_DIR . "/themes/$template";3329	$default_dir = WP_CONTENT_DIR . '/themes/' . WP_DEFAULT_THEME;3330 3331	if ( ! file_exists( "$home_path/index.php" ) ) {3332		return false;3333	}3334 3335	/*3336	 * Copy files from the old locations to the site theme.3337	 * TODO: This does not copy arbitrary include dependencies. Only the standard WP files are copied.3338	 */3339	$files = array(3340		'index.php'             => 'index.php',3341		'wp-layout.css'         => 'style.css',3342		'wp-comments.php'       => 'comments.php',3343		'wp-comments-popup.php' => 'comments-popup.php',3344	);3345 3346	foreach ( $files as $oldfile => $newfile ) {3347		if ( 'index.php' === $oldfile ) {3348			$oldpath = $home_path;3349		} else {3350			$oldpath = ABSPATH;3351		}3352 3353		// Check to make sure it's not a new index.3354		if ( 'index.php' === $oldfile ) {3355			$index = implode( '', file( "$oldpath/$oldfile" ) );3356			if ( str_contains( $index, 'WP_USE_THEMES' ) ) {3357				if ( ! copy( "$default_dir/$oldfile", "$site_dir/$newfile" ) ) {3358					return false;3359				}3360 3361				// Don't copy anything.3362				continue;3363			}3364		}3365 3366		if ( ! copy( "$oldpath/$oldfile", "$site_dir/$newfile" ) ) {3367			return false;3368		}3369 3370		chmod( "$site_dir/$newfile", 0777 );3371 3372		// Update the blog header include in each file.3373		$lines = explode( "\n", implode( '', file( "$site_dir/$newfile" ) ) );3374		if ( $lines ) {3375			$f = fopen( "$site_dir/$newfile", 'w' );3376 3377			foreach ( $lines as $line ) {3378				if ( preg_match( '/require.*wp-blog-header/', $line ) ) {3379					$line = '//' . $line;3380				}3381 3382				// Update stylesheet references.3383				$line = str_replace(3384					"<?php echo __get_option('siteurl'); ?>/wp-layout.css",3385					"<?php bloginfo('stylesheet_url'); ?>",3386					$line3387				);3388 3389				// Update comments template inclusion.3390				$line = str_replace(3391					"<?php include(ABSPATH . 'wp-comments.php'); ?>",3392					'<?php comments_template(); ?>',3393					$line3394				);3395 3396				fwrite( $f, "{$line}\n" );3397			}3398			fclose( $f );3399		}3400	}3401 3402	// Add a theme header.3403	$header = "/*\n" .3404		"Theme Name: $theme_name\n" .3405		'Theme URI: ' . __get_option( 'siteurl' ) . "\n" .