112 lines
3.3 KiB
PHP
112 lines
3.3 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\Process;
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use Symfony\Component\Process\Exception\InvalidArgumentException;
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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 <martin.hason@gmail.com>
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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 (defined('PHP_WINDOWS_VERSION_BUILD')) {
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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('/(")/i', $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 $escapedArgument;
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}
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return escapeshellarg($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 $input The input to validate
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*
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* @return string The validated input
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*
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* @throws InvalidArgumentException In case the input is not valid
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*/
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public static function validateInput($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 $input;
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}
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if (is_scalar($input)) {
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return (string) $input;
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}
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// deprecated as of Symfony 2.5, to be removed in 3.0
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if (is_object($input) && method_exists($input, '__toString')) {
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return (string) $input;
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}
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throw new InvalidArgumentException(sprintf('%s only accepts strings 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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