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<?php
namespace Consolidation\SiteProcess\Util;
/**
* Shell::op is a static factory that will create shell operators for use
* in command line arguments list. Shell operators are characters that have
* special meaning to the shell, such as "output redirection". When a shell
* operator object is used, it indicates that this element is intended to
* be used as an operator, and is not simply some other parameter to be escaped.
*/
class Shell implements ShellOperatorInterface
{
protected $value;
public static function op($operator)
static::validateOp($operator);
return new self($operator);
}
public static function preEscaped($value)
return new self($value);
public function __construct($value)
$this->value = $value;
public function __toString()
return $this->value;
protected static function validateOp($operator)
$valid = [
'&&',
'||',
'|',
'<',
'>',
'>>',
';',
];
if (!in_array($operator, $valid)) {
throw new \Exception($operator . ' is not a valid shell operator.');
consolidation /
site-process
