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