Viewing file:  EnvVariableFinder.php (1.75 KB) -rw-rw-rw-
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<?php
/*
* This file is part of the Fidry CPUCounter Config package.
*
* (c) Théo FIDRY <theo.fidry@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Fidry\CpuCoreCounter\Finder;
use function getenv;
use function preg_match;
use function sprintf;
use function var_export;
final class EnvVariableFinder implements CpuCoreFinder
{
/** @var string */
private $environmentVariableName;
public function __construct(string $environmentVariableName)
{
$this->environmentVariableName = $environmentVariableName;
}
public function diagnose(): string
{
$value = getenv($this->environmentVariableName);
return sprintf(
'parse(getenv(%s)=%s)=%s',
$this->environmentVariableName,
var_export($value, true),
self::isPositiveInteger($value) ? $value : 'null'
);
}
public function find(): ?int
{
$value = getenv($this->environmentVariableName);
if (is_string($value) && 1 === preg_match('/^(\d+)m$/', $value, $matches)) {
$millicores = $matches[1];
$value = (string) floor($millicores / 1000);
}
return self::isPositiveInteger($value)
? (int) $value
: null;
}
public function toString(): string
{
return sprintf(
'getenv(%s)',
$this->environmentVariableName
);
}
/**
* @param string|false $value
*/
private static function isPositiveInteger($value): bool
{
return false !== $value
&& 1 === preg_match('/^\d+$/', $value)
&& (int) $value > 0;
}
}
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