splitinfinities/base.php

## base.php
<?php
	use SPLIT\Wrapper;
?>
<head>
	<?php wp_head(); ?>
</head>
<body>
	<?php include Wrapper\template_path(); ?>
	<?php wp_footer(); ?>
</body>

## wrapper.php
<?php
// use include() to add this file in your functions.php, based off an old version of Sage.

namespace SPLIT\Wrapper;

/**
 * Theme wrapper
 *
 * @link https://roots.io/sage/docs/theme-wrapper/
 * @link http://scribu.net/wordpress/theme-wrappers.html
 */

function template_path() {
	return SPLIT_Wrapping::$main_partial;
}


function sidebar_path() {
	return new SPLIT_Wrapping('partials/sidebar.php');
}


class SPLIT_Wrapping {
	// Stores the full path to the main partial file
	public static $main_partial;

	// Basename of partial file
	public $slug;

	// Array of partials
	public $partials;

	// Stores the base name of the partial file; e.g. 'page' for 'page.php' etc.
	public static $base;

	public function __construct($partial = 'base.php') {
		$this->slug = basename($partial, '.php');
		$this->partials = [$partial];

		if (self::$base) {
			$str = substr($partial, 0, -4);
			array_unshift($this->partials, sprintf($str . '-%s.php', self::$base));
		}
	}

	public function __toString() {
		$this->partials = apply_filters('SPLIT/wrap_' . $this->slug, $this->partials);
		return locate_template($this->partials);
	}

	public static function wrap($main) {
		// Check for other filters returning null
		if (!is_string($main)) {
			return $main;
		}

		self::$main_partial = $main;
		self::$base = basename(self::$main_partial, '.php');

		if (self::$base === 'index') {
			self::$base = false;
		}

		return new SPLIT_Wrapping();
	}
}

add_filter('template_include', [__NAMESPACE__ . '\\SPLIT_Wrapping', 'wrap'], 109);
	<?php
	use SPLIT\Wrapper;
	?>
	<head>
	<?php wp_head(); ?>
	</head>
	<body>
	<?php include Wrapper\template_path(); ?>
	<?php wp_footer(); ?>
	</body>
	<?php
	// use include() to add this file in your functions.php, based off an old version of Sage.

	namespace SPLIT\Wrapper;

	/**
	* Theme wrapper
	*
	* @link https://roots.io/sage/docs/theme-wrapper/
	* @link http://scribu.net/wordpress/theme-wrappers.html
	*/

	function template_path() {
	return SPLIT_Wrapping::$main_partial;
	}


	function sidebar_path() {
	return new SPLIT_Wrapping('partials/sidebar.php');
	}


	class SPLIT_Wrapping {
	// Stores the full path to the main partial file
	public static $main_partial;

	// Basename of partial file
	public $slug;

	// Array of partials
	public $partials;

	// Stores the base name of the partial file; e.g. 'page' for 'page.php' etc.
	public static $base;

	public function __construct($partial = 'base.php') {
	$this->slug = basename($partial, '.php');
	$this->partials = [$partial];

	if (self::$base) {
	$str = substr($partial, 0, -4);
	array_unshift($this->partials, sprintf($str . '-%s.php', self::$base));
	}
	}

	public function __toString() {
	$this->partials = apply_filters('SPLIT/wrap_' . $this->slug, $this->partials);
	return locate_template($this->partials);
	}

	public static function wrap($main) {
	// Check for other filters returning null
	if (!is_string($main)) {
	return $main;
	}

	self::$main_partial = $main;
	self::$base = basename(self::$main_partial, '.php');

	if (self::$base === 'index') {
	self::$base = false;
	}

	return new SPLIT_Wrapping();
	}
	}

	add_filter('template_include', [__NAMESPACE__ . '\\SPLIT_Wrapping', 'wrap'], 109);