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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the humbug/php-scoper package. |
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* |
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* Copyright (c) 2017 Théo FIDRY <[email protected]>, |
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* Pádraic Brady <[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 Humbug\PhpScoper\Autoload; |
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use Humbug\PhpScoper\PhpParser\NodeVisitor\Collection\UserGlobalFunctionCollection; |
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use Humbug\PhpScoper\Whitelist; |
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use PhpParser\Node\Name\FullyQualified; |
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use const PHP_EOL; |
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use function array_map; |
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use function array_unshift; |
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use function iterator_to_array; |
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use function sprintf; |
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use function str_replace; |
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1 |
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final class ScoperAutoloadGenerator |
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{ |
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private $whitelist; |
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public function __construct(Whitelist $whitelist) |
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{ |
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$this->whitelist = $whitelist; |
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1 |
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} |
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1 |
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public function dump(string $prefix): string |
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{ |
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$classAliasStatements = $this->createClassAliasStatements($prefix); |
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1 |
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$statements = implode(PHP_EOL, $classAliasStatements).PHP_EOL.PHP_EOL; |
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$statements .= implode(PHP_EOL, $this->createFunctionAliasStatements($this->whitelist->getUserGlobalFunctions())); |
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1 |
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$dump = <<<PHP |
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<?php |
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// scoper-autoload.php @generated by PhpScoper |
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\$loader = require_once __DIR__.'/autoload.php'; |
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$statements |
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1 |
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return \$loader; |
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PHP; |
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$cleanedDump = $dump; |
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do { |
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$dump = $cleanedDump; |
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$cleanedDump = str_replace("\n\n\n", "\n\n", $dump); |
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} while ($cleanedDump !== $dump); |
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return $dump; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function createClassAliasStatements(string $prefix): array |
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{ |
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$statements = array_map( |
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function (string $whitelistedElement) use ($prefix): string { |
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return sprintf( |
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'class_exists(\'%s\%s\');', |
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$prefix, |
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$whitelistedElement |
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); |
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}, |
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$this->whitelist->getClassWhitelistArray() |
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); |
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if ([] === $statements) { |
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return $statements; |
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} |
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array_unshift( |
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$statements, |
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<<<'EOF' |
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// Aliases for the whitelisted classes. For more information see: |
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// https://github.com/humbug/php-scoper/blob/master/README.md#classes--constants-whitelisting |
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EOF |
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); |
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return $statements; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function createFunctionAliasStatements(UserGlobalFunctionCollection $userGlobalFunctions): array |
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{ |
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$statements = array_map( |
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function (array $node): string { |
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/** |
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* @var FullyQualified |
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* @var FullyQualified $alias |
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*/ |
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[$original, $alias] = $node; |
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return sprintf( |
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<<<'PHP' |
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if (!function_exists('%1$s')) { |
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function %1$s() { |
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return \%2$s(func_get_args()); |
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} |
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} |
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PHP |
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, |
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$original->toString(), |
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$alias->toString() |
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); |
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}, |
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iterator_to_array($userGlobalFunctions) |
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); |
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if ([] === $statements) { |
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return $statements; |
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} |
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array_unshift( |
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$statements, |
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<<<'EOF' |
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// Functions whitelisting. For more information see: |
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// https://github.com/humbug/php-scoper/blob/master/README.md#global-user-functions |
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EOF |
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); |
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return $statements; |
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} |
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} |
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.