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<?php |
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/* |
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* This file was taken from the "symfony/process" for backward compatibility. |
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* https://github.com/symfony/process/tree/3.2 |
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* |
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* (c) Alchemy <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Alchemy\Zippy\ProcessBuilder; |
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use InvalidArgumentException; |
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use Symfony\Component\Process\Process; |
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/** |
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* ProcessUtils is a bunch of utility methods. |
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* |
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* This class contains static methods only and is not meant to be instantiated. |
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* |
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* @author Martin Hasoň <[email protected]> |
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*/ |
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class ProcessUtils |
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{ |
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/** |
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* This class should not be instantiated. |
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*/ |
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private function __construct() |
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{ |
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} |
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/** |
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* Escapes a string to be used as a shell argument. |
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* |
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* @param string $argument The argument that will be escaped |
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* |
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* @return string The escaped argument |
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*/ |
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public static function escapeArgument($argument) |
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{ |
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//Fix for PHP bug #43784 escapeshellarg removes % from given string |
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//Fix for PHP bug #49446 escapeshellarg doesn't work on Windows |
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//@see https://bugs.php.net/bug.php?id=43784 |
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//@see https://bugs.php.net/bug.php?id=49446 |
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if ('\\' === DIRECTORY_SEPARATOR) { |
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if ('' === $argument) { |
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return escapeshellarg($argument); |
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} |
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$escapedArgument = ''; |
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$quote = false; |
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foreach (preg_split('/(")/', $argument, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $part) { |
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if ('"' === $part) { |
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$escapedArgument .= '\\"'; |
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} elseif (self::isSurroundedBy($part, '%')) { |
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// Avoid environment variable expansion |
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$escapedArgument .= '^%"'.substr($part, 1, -1).'"^%'; |
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} else { |
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// escape trailing backslash |
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if ('\\' === substr($part, -1)) { |
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$part .= '\\'; |
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} |
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$quote = true; |
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$escapedArgument .= $part; |
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} |
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} |
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if ($quote) { |
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$escapedArgument = '"'.$escapedArgument.'"'; |
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} |
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return $escapedArgument; |
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} |
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return "'".str_replace("'", "'\\''", $argument)."'"; |
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} |
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/** |
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* Validates and normalizes a Process input. |
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* |
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* @param string $caller The name of method call that validates the input |
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* @param mixed $input The input to validate |
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* |
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* @return mixed The validated input |
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* |
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* @throws InvalidArgumentException In case the input is not valid |
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*/ |
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public static function validateInput($caller, $input) |
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{ |
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if (null !== $input) { |
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if (is_resource($input)) { |
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return $input; |
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} |
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if (is_string($input)) { |
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return $input; |
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} |
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if (is_scalar($input)) { |
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return (string) $input; |
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} |
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if ($input instanceof Process) { |
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return $input->getIterator($input::ITER_SKIP_ERR); |
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} |
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if ($input instanceof \Iterator) { |
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return $input; |
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} |
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if ($input instanceof \Traversable) { |
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return new \IteratorIterator($input); |
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} |
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throw new InvalidArgumentException(sprintf('%s only accepts strings, Traversable objects or stream resources.', $caller)); |
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} |
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return $input; |
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} |
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private static function isSurroundedBy($arg, $char) |
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{ |
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return 2 < strlen($arg) && $char === $arg[0] && $char === $arg[strlen($arg) - 1]; |
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} |
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} |
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alchemy-fr /
Zippy
