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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\View\Template; |
| 16 | |
| 17 | /** |
| 18 | * View file template class |
| 19 | * |
| 20 | * @category Pop |
| 21 | * @package Pop\View |
| 22 | * @author Nick Sagona, III <nick@popphp.org> |
| 23 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 24 | * @license https://www.popphp.org/license New BSD License |
| 25 | * @version 5.0.0 |
| 26 | */ |
| 27 | class File extends AbstractTemplate |
| 28 | { |
| 29 | |
| 30 | /** |
| 31 | * Constructor |
| 32 | * |
| 33 | * Instantiate the view file template object |
| 34 | * |
| 35 | * @param string $template |
| 36 | */ |
| 37 | public function __construct(string $template) |
| 38 | { |
| 39 | $this->setTemplate($template); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Set view template |
| 44 | * |
| 45 | * @param string $template |
| 46 | * @throws Exception |
| 47 | * @return static |
| 48 | */ |
| 49 | public function setTemplate(string $template): static |
| 50 | { |
| 51 | if (!file_exists($template)) { |
| 52 | throw new Exception("Error: The template file '" . $template . "' does not exist."); |
| 53 | } |
| 54 | $this->template = $template; |
| 55 | |
| 56 | return $this; |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Render the view and return the output |
| 61 | * |
| 62 | * @param ?array $data |
| 63 | * @throws \Exception |
| 64 | * @return string |
| 65 | */ |
| 66 | public function render(?array $data = null): string |
| 67 | { |
| 68 | if ($data !== null) { |
| 69 | $this->data = $data; |
| 70 | } |
| 71 | $this->renderTemplate(); |
| 72 | return $this->output; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Render view template file |
| 77 | * |
| 78 | * @return void |
| 79 | */ |
| 80 | protected function renderTemplate(): void |
| 81 | { |
| 82 | foreach ($this->data as $key => $value) { |
| 83 | ${$key} = $value; |
| 84 | } |
| 85 | |
| 86 | try { |
| 87 | ob_start(); |
| 88 | include $this->template; |
| 89 | $this->output = ob_get_clean(); |
| 90 | } catch (\Throwable $e) { |
| 91 | // ob_end_clean() (not ob_clean()) is required here: ob_clean() only empties the buffer's |
| 92 | // contents but leaves it on PHP's output-buffer stack, so a caller that catches this |
| 93 | // exception and continues execution is left with a dangling output buffer that silently |
| 94 | // swallows subsequent unrelated output. Catching \Throwable (not \Exception) matters too - |
| 95 | // a raw PHP/PHTML template can throw an Error (e.g. a typo'd function call), which would |
| 96 | // otherwise skip this cleanup entirely and leak the buffer via a different path. |
| 97 | ob_end_clean(); |
| 98 | throw $e; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | } |