logo-or-title

if (!function_exists('storefront_site_title_or_logo')) {
    /**
     * Display the site title or logo
     *
     * @since 2.1.0
     * @param bool $echo Echo the string or return it.
     * @return string
     */
    function storefront_site_title_or_logo($echo = true)
    {
        if (function_exists('the_custom_logo') && has_custom_logo()) {
            $logo = get_custom_logo();
            $html = is_home() ? '<h1 class="logo">' . $logo . '</h1>' : $logo;
        } elseif (function_exists('jetpack_has_site_logo') && jetpack_has_site_logo()) {
            // Copied from jetpack_the_site_logo() function.
            $logo    = site_logo()->logo;
            $logo_id = get_theme_mod('custom_logo'); // Check for WP 4.5 Site Logo
            $logo_id = $logo_id ? $logo_id : $logo['id']; // Use WP Core logo if present, otherwise use Jetpack's.
            $size    = site_logo()->theme_size();
            $html    = sprintf(
                '<a href="%1$s" class="site-logo-link" rel="home" itemprop="url">%2$s</a>',
                esc_url(home_url('/')),
                wp_get_attachment_image(
                    $logo_id,
                    $size,
                    false,
                    array(
                        'class'     => 'site-logo attachment-' . $size,
                        'data-size' => $size,
                        'itemprop'  => 'logo'
                    )
                )
            );

            $html = apply_filters('jetpack_the_site_logo', $html, $logo, $size);
        } else {
            $tag = is_home() ? 'h1' : 'div';

            $html = '<' . esc_attr($tag) . ' class="beta site-title"><a href="' . esc_url(home_url('/')) . '" rel="home">' . esc_html(get_bloginfo('name')) . '</a></' . esc_attr($tag) . '>';

            if ('' !== get_bloginfo('description')) {
                $html .= '<p class="site-description">' . esc_html(get_bloginfo('description', 'display')) . '</p>';
            }
        }

        if (!$echo) {
            return $html;
        }

        echo $html;
    }
}