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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Engelsystem\Renderer; |
| 6 | |
| 7 | use Illuminate\Support\Str; |
| 8 | use Twig\Error\SyntaxError; |
| 9 | use Twig\Loader\FilesystemLoader as FilesystemLoader; |
| 10 | use Twig\Node\EmptyNode; |
| 11 | use Twig\Node\Node; |
| 12 | use Twig\Token; |
| 13 | use Twig\TokenParser\AbstractTokenParser; |
| 14 | |
| 15 | class ExtendsTokenParser extends AbstractTokenParser |
| 16 | { |
| 17 | public function __construct(protected FilesystemLoader $loader, protected string $basePath) |
| 18 | { |
| 19 | } |
| 20 | |
| 21 | /** |
| 22 | * Allows multi-inheritance by searching for the file to be extended in views and views of all plugins |
| 23 | */ |
| 24 | public function parse(Token $token): Node |
| 25 | { |
| 26 | $stream = $this->parser->getStream(); |
| 27 | |
| 28 | if ($this->parser->peekBlockStack() || !$this->parser->isMainScope()) { |
| 29 | throw new SyntaxError( |
| 30 | 'Cannot use "extend" in a block or macro.', |
| 31 | $token->getLine(), |
| 32 | $stream->getSourceContext(), |
| 33 | ); |
| 34 | } |
| 35 | |
| 36 | $parent = $this->parser->parseExpression(); |
| 37 | $templateFile = $stream->getSourceContext()->getPath(); |
| 38 | $extendsFile = $parent->getAttribute('value'); |
| 39 | |
| 40 | $extendsFile = $this->getNextParentFile($templateFile, $extendsFile); |
| 41 | |
| 42 | $parent->setAttribute('value', $extendsFile); |
| 43 | |
| 44 | $this->parser->setParent($parent); |
| 45 | |
| 46 | $stream->expect(Token::BLOCK_END_TYPE); |
| 47 | |
| 48 | return new EmptyNode($token->getLine()); |
| 49 | } |
| 50 | |
| 51 | public function getTag(): string |
| 52 | { |
| 53 | return 'extends'; |
| 54 | } |
| 55 | |
| 56 | protected function getNextParentFile(string $templateFile, string $extendsFile): string |
| 57 | { |
| 58 | $found = false; |
| 59 | foreach ($this->loader->getPaths() as $path) { |
| 60 | // Ignore file itself |
| 61 | if (Str::startsWith($templateFile, $path . '/')) { |
| 62 | $found = true; |
| 63 | continue; |
| 64 | } |
| 65 | |
| 66 | // Skip all paths "above" the currently extending file |
| 67 | if (!$found) { |
| 68 | continue; |
| 69 | } |
| 70 | |
| 71 | // Use file if it is loadable |
| 72 | $parentFilePath = Str::replaceStart($this->basePath . '/', '', $path . '/' . $extendsFile); |
| 73 | if ($this->loader->exists($parentFilePath)) { |
| 74 | return $parentFilePath; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | return $extendsFile; |
| 79 | } |
| 80 | } |