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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\Whitelist; |
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use PhpParser\Node\Name\FullyQualified; |
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use function array_column; |
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use function array_map; |
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use function array_unshift; |
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use function chr; |
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use function sprintf; |
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use function str_repeat; |
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use function str_replace; |
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use function strpos; |
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final class ScoperAutoloadGenerator |
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{ |
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private $whitelist; |
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private $eol; |
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public function __construct(Whitelist $whitelist) |
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{ |
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$this->whitelist = $whitelist; |
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$this->eol = chr(10); |
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} |
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public function dump(): string |
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{ |
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$whitelistedFunctions = $this->whitelist->getRecordedWhitelistedFunctions(); |
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$hasNamespacedFunctions = $this->hasNamespacedFunctions($whitelistedFunctions); |
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$statements = implode( |
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$this->eol, |
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$this->createClassAliasStatements( |
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$this->whitelist->getRecordedWhitelistedClasses(), |
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$hasNamespacedFunctions) |
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) |
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.$this->eol |
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.$this->eol |
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; |
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$statements .= implode( |
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$this->eol, |
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$this->createFunctionAliasStatements( |
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$whitelistedFunctions, |
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$hasNamespacedFunctions |
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) |
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); |
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if ($hasNamespacedFunctions) { |
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$dump = <<<PHP |
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<?php |
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// scoper-autoload.php @generated by PhpScoper |
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namespace { |
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\$loader = require_once __DIR__.'/autoload.php'; |
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} |
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$statements |
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namespace { |
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return \$loader; |
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} |
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PHP; |
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} else { |
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$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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$statements |
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return \$loader; |
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PHP; |
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} |
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$dump = $this->cleanAutoload($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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private function createClassAliasStatements(array $whitelistedClasses, bool $hasNamespacedFunctions): array |
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{ |
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$statements = array_map( |
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static function (string $prefixedClass): string { |
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return sprintf( |
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'class_exists(\'%s\');', |
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$prefixedClass |
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); |
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}, |
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array_column( |
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$whitelistedClasses, |
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1 |
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) |
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); |
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if ([] === $statements) { |
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return $statements; |
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} |
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if ($hasNamespacedFunctions) { |
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$statements = array_map( |
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static function (string $statement): string { |
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return str_repeat(' ', 4).$statement; |
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}, |
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$statements |
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); |
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array_unshift($statements, 'namespace {'); |
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$statements[] = '}'.$this->eol; |
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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#class-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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private function createFunctionAliasStatements(array $whitelistedFunctions, bool $hasNamespacedFunctions): array |
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{ |
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$statements = array_map( |
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static function (array $node) use ($hasNamespacedFunctions): string { |
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$original = new FullyQualified($node[0]); |
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$alias = new FullyQualified($node[1]); |
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if ($hasNamespacedFunctions) { |
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$namespace = $original->slice(0, -1); |
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$functionName = null === $namespace ? $original->toString() : $original->slice(1)->toString(); |
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return sprintf( |
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<<<'PHP' |
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namespace %s{ |
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if (!function_exists('%s')) { |
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function %s(%s) { |
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return \%s(...func_get_args()); |
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} |
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} |
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} |
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PHP |
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, |
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null === $namespace ? '' : $namespace->toString().' ', |
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$original->toString(), |
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$functionName, |
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'__autoload' === $functionName ? '$className' : '', |
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$alias->toString() |
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); |
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} |
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return sprintf( |
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<<<'PHP' |
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if (!function_exists('%1$s')) { |
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function %1$s(%2$s) { |
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return \%3$s(...func_get_args()); |
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} |
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} |
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PHP |
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, |
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$original, |
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'__autoload' === (string) $original ? '$className' : '', |
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$alias |
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); |
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}, |
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$whitelistedFunctions |
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); |
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2 |
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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#functions-whitelisting |
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EOF |
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); |
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return $statements; |
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} |
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private function hasNamespacedFunctions(array $functions): bool |
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{ |
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foreach ($functions as [$original, $alias]) { |
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/* |
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* @var string |
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* @var string $alias |
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*/ |
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if (false !== strpos($original, '\\')) { |
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return true; |
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} |
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} |
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return false; |
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} |
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private function cleanAutoload(string $dump): string |
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{ |
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$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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humbug /
php-scoper
