Chris@0: <?php
Chris@0: /*
Chris@0:  * This file is part of the GlobalState package.
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@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@0:     /**
Chris@0:      * @param  Snapshot $snapshot
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function constants(Snapshot $snapshot)
Chris@0:     {
Chris@0:         $result = '';
Chris@0: 
Chris@0:         foreach ($snapshot->constants() as $name => $value) {
Chris@0:             $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@0:     /**
Chris@0:      * @param  Snapshot $snapshot
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function iniSettings(Snapshot $snapshot)
Chris@0:     {
Chris@0:         $result = '';
Chris@0: 
Chris@0:         foreach ($snapshot->iniSettings() as $key => $value) {
Chris@0:             $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@0:     /**
Chris@0:      * @param  mixed  $variable
Chris@0:      * @return string
Chris@0:      */
Chris@0:     private function exportVariable($variable)
Chris@0:     {
Chris@0:         if (is_scalar($variable) || is_null($variable) ||
Chris@0:             (is_array($variable) && $this->arrayOnlyContainsScalars($variable))) {
Chris@0:             return var_export($variable, true);
Chris@0:         }
Chris@0: 
Chris@0:         return 'unserialize(' . var_export(serialize($variable), true) . ')';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @param  array $array
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     private function arrayOnlyContainsScalars(array $array)
Chris@0:     {
Chris@0:         $result = true;
Chris@0: 
Chris@0:         foreach ($array as $element) {
Chris@0:             if (is_array($element)) {
Chris@0:                 $result = self::arrayOnlyContainsScalars($element);
Chris@0:             } 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: }