render_block_core_site_logo

render_block_core_site_logo: 这个函数用来渲染WordPress中的网站标志块。网站标志块显示一个网站的标志，用户可以自定义: 这个函数负责生成网站标志块的HTML标记。

在服务器上渲染`core/site-logo’区块。

function render_block_core_site_logo( $attributes ) {
	$adjust_width_height_filter = function ( $image ) use ( $attributes ) {
		if ( empty( $attributes['width'] ) || empty( $image ) || ! $image[1] || ! $image[2] ) {
			return $image;
		}
		$height = (float) $attributes['width'] / ( (float) $image[1] / (float) $image[2] );
		return array( $image[0], (int) $attributes['width'], (int) $height );
	};

	add_filter( 'wp_get_attachment_image_src', $adjust_width_height_filter );

	$custom_logo = get_custom_logo();

	remove_filter( 'wp_get_attachment_image_src', $adjust_width_height_filter );

	if ( empty( $custom_logo ) ) {
		return ''; // Return early if no custom logo is set, avoiding extraneous wrapper div.
	}

	if ( ! $attributes['isLink'] ) {
		// Remove the link.
		$custom_logo = preg_replace( '#<a.*?>(.*?)</a>#i', '1', $custom_logo );
	}

	if ( $attributes['isLink'] && '_blank' === $attributes['linkTarget'] ) {
		// Add the link target after the rel="home".
		// Add an aria-label for informing that the page opens in a new tab.
		$aria_label  = 'aria-label="' . esc_attr__( '(Home link, opens in a new tab)' ) . '"';
		$custom_logo = str_replace( 'rel="home"', 'rel="home" target="' . esc_attr( $attributes['linkTarget'] ) . '"' . $aria_label, $custom_logo );
	}

	$classnames = array();
	if ( empty( $attributes['width'] ) ) {
		$classnames[] = 'is-default-size';
	}

	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classnames ) ) );
	$html               = sprintf( '<div %s>%s</div>', $wrapper_attributes, $custom_logo );
	return $html;
}