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<?php |
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/* |
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* This file is part of the ICanBoogie package. |
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* |
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* (c) Olivier Laviale <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ICanBoogie\Render; |
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use ArrayObject; |
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use InvalidArgumentException; |
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use Stringable; |
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use Throwable; |
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use function extract; |
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use function get_debug_type; |
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use function is_array; |
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use function is_object; |
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use function is_string; |
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use function ob_end_clean; |
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use function ob_get_clean; |
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use function ob_start; |
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/** |
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* Renders PHP templates. |
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*/ |
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final class PHPEngine implements Engine |
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{ |
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private const FORBIDDEN_VAR_THIS = 'this'; |
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/** |
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* @throws Throwable |
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*/ |
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public function render(string $template_pathname, mixed $content, array $variables): string |
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{ |
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if (isset($variables[self::FORBIDDEN_VAR_THIS])) { |
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throw new InvalidArgumentException("The usage of 'this' is forbidden in variables."); |
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} |
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$f = function ($__TEMPLATE_PATHNAME__, $__VARIABLES__) { |
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extract($__VARIABLES__); |
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require $__TEMPLATE_PATHNAME__; |
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}; |
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if ($content) { |
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$f = $f->bindTo($this->ensure_is_object($content)); |
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} |
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ob_start(); |
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try { |
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$f($template_pathname, [ self::VAR_TEMPLATE_PATHNAME => $template_pathname ] + $variables); |
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return ob_get_clean() ?: ""; |
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} catch (Throwable $e) { |
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ob_end_clean(); |
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throw $e; |
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} |
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} |
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/** |
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* Ensures that a value is an object. |
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* |
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* - `value` is an object, value is returned. |
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* - `value` is an array, an `ArrayObject` instance is returned. |
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* - Otherwise `value` is cast into a string and a {@link String} instance is returned. |
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*/ |
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private function ensure_is_object(mixed $value): object |
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{ |
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if (is_object($value)) { |
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return $value; |
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} |
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if (is_array($value)) { |
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return new ArrayObject($value); |
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} |
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if (is_string($value)) { |
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return new class ($value) implements Stringable { |
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public function __construct( |
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private readonly string $value |
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) { |
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} |
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public function __toString(): string |
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{ |
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return $this->value; |
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} |
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}; |
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} |
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throw new InvalidArgumentException("Don't know what to do with: " . get_debug_type($value) . "."); |
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} |
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} |
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ICanBoogie /
Render
