Chris@0: <?php
Chris@0: /*
Chris@14:  * This file is part of sebastian/global-state.
Chris@0:  *
Chris@0:  * (c) Sebastian Bergmann <sebastian@phpunit.de>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@14: declare(strict_types=1);
Chris@14: 
Chris@0: namespace SebastianBergmann\GlobalState;
Chris@0: 
Chris@0: /**
Chris@0:  * Exports parts of a Snapshot as PHP code.
Chris@0:  */
Chris@0: class CodeExporter
Chris@0: {
Chris@14:     public function constants(Snapshot $snapshot): string
Chris@0:     {
Chris@0:         $result = '';
Chris@0: 
Chris@0:         foreach ($snapshot->constants() as $name => $value) {
Chris@14:             $result .= \sprintf(
Chris@0:                 'if (!defined(\'%s\')) define(\'%s\', %s);' . "\n",
Chris@0:                 $name,
Chris@0:                 $name,
Chris@0:                 $this->exportVariable($value)
Chris@0:             );
Chris@0:         }
Chris@0: 
Chris@0:         return $result;
Chris@0:     }
Chris@0: 
Chris@14:     public function globalVariables(Snapshot $snapshot): string
Chris@14:     {
Chris@14:         $result = '$GLOBALS = [];' . PHP_EOL;
Chris@14: 
Chris@14:         foreach ($snapshot->globalVariables() as $name => $value) {
Chris@14:             $result .= \sprintf(
Chris@14:                 '$GLOBALS[%s] = %s;' . PHP_EOL,
Chris@14:                 $this->exportVariable($name),
Chris@14:                 $this->exportVariable($value)
Chris@14:             );
Chris@14:         }
Chris@14: 
Chris@14:         return $result;
Chris@14:     }
Chris@14: 
Chris@14:     public function iniSettings(Snapshot $snapshot): string
Chris@0:     {
Chris@0:         $result = '';
Chris@0: 
Chris@0:         foreach ($snapshot->iniSettings() as $key => $value) {
Chris@14:             $result .= \sprintf(
Chris@0:                 '@ini_set(%s, %s);' . "\n",
Chris@0:                 $this->exportVariable($key),
Chris@0:                 $this->exportVariable($value)
Chris@0:             );
Chris@0:         }
Chris@0: 
Chris@0:         return $result;
Chris@0:     }
Chris@0: 
Chris@14:     private function exportVariable($variable): string
Chris@0:     {
Chris@14:         if (\is_scalar($variable) || \is_null($variable) ||
Chris@14:             (\is_array($variable) && $this->arrayOnlyContainsScalars($variable))) {
Chris@14:             return \var_export($variable, true);
Chris@0:         }
Chris@0: 
Chris@14:         return 'unserialize(' . \var_export(\serialize($variable), true) . ')';
Chris@0:     }
Chris@0: 
Chris@14:     private function arrayOnlyContainsScalars(array $array): bool
Chris@0:     {
Chris@0:         $result = true;
Chris@0: 
Chris@0:         foreach ($array as $element) {
Chris@14:             if (\is_array($element)) {
Chris@0:                 $result = self::arrayOnlyContainsScalars($element);
Chris@14:             } elseif (!\is_scalar($element) && !\is_null($element)) {
Chris@0:                 $result = false;
Chris@0:             }
Chris@0: 
Chris@0:             if ($result === false) {
Chris@0:                 break;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $result;
Chris@0:     }
Chris@0: }