la-restaurant-theme/source/functions/views.php

<?php

namespace la_restaurant_theme;

require_once('view.php');

class views {
    private string $path;

    public function __construct(string $path) {
        $this->path = $this->parse_path($path);

        if (!$this->exists()) {
            throw new ErrorException(
                'Views directory "'.$this->path.'" not exists.'
            );
        }
    }

    private function parse_path($path): string {
        if (strlen($path) === 0) {
            $path = './';
        }
        
        $size = strlen($path);
        $last = $path[$size - 1];

        if ($last !== '/' || $last !== '\\') {
            return $path.'/';
        }

        return $path;
    }

    public function exists(): bool {
        return is_dir($this->path);
    }

    private function get_file_for(string $name): string {
        $unix = strpos($name, '/');
        $dos = strpos($name, '\\');

        if ($unix !== false || $dos !== false) {
            throw new ErrorException('View "'.$name.'" not in views dir.');
        }

        return $this->path.$name;
    }

    public function get(string $name): view {
        return new view($this->get_file_for($name));
    }
}