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Edit File: ProcessExecutor.php

<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\Util;

use Composer\IO\IOInterface;
use Composer\Util\Platform;
use Symfony\Component\Process\Process;
use Symfony\Component\Process\ProcessUtils;

/**
 * @author Robert Schönthal <seroscho@googlemail.com>
 */
class ProcessExecutor
{
    protected static $timeout = 300;

protected $captureOutput;
    protected $errorOutput;
    protected $io;

public function __construct(IOInterface $io = null)
    {
        $this->io = $io;
    }

/**
     * runs a process on the commandline
     *
     * @param  string $command the command to execute
     * @param  mixed  $output  the output will be written into this var if passed by ref
     *                         if a callable is passed it will be used as output handler
     * @param  string $cwd     the working directory
     * @return int    statuscode
     */
    public function execute($command, &$output = null, $cwd = null)
    {
        if ($this->io && $this->io->isDebug()) {
            $safeCommand = preg_replace_callback('{://(?P<user>[^:/\s]+):(?P<password>[^@\s/]+)@}i', function ($m) {
                // if the username looks like a long (12char+) hex string, or a modern github token (e.g. ghp_xxx) we obfuscate that
                if (preg_match('{^([a-f0-9]{12,}|gh[a-z]_[a-zA-Z0-9_]+)$}', $m['user'])) {
                    return '://***:***@';
                }

return '://'.$m['user'].':***@';
            }, $command);
            $safeCommand = preg_replace("{--password (.*[^\\\\]\') }", '--password \'***\' ', $safeCommand);
            $this->io->writeError('Executing command ('.($cwd ?: 'CWD').'): '.$safeCommand);
        }

// make sure that null translate to the proper directory in case the dir is a symlink
        // and we call a git command, because msysgit does not handle symlinks properly
        if (null === $cwd && Platform::isWindows() && false !== strpos($command, 'git') && getcwd()) {
            $cwd = realpath(getcwd());
        }

if (null !== $cwd && !is_dir($cwd)) {
            throw new \RuntimeException('The given CWD for the process does not exist: '.$cwd);
        }

$this->captureOutput = func_num_args() > 1;
        $this->errorOutput = null;

// TODO in v3, commands should be passed in as arrays of cmd + args
        if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {
            $process = Process::fromShellCommandline($command, $cwd, null, null, static::getTimeout());
        } else {
            $process = new Process($command, $cwd, null, null, static::getTimeout());
        }

$callback = is_callable($output) ? $output : array($this, 'outputHandler');
        $process->run($callback);

if ($this->captureOutput && !is_callable($output)) {
            $output = $process->getOutput();
        }

$this->errorOutput = $process->getErrorOutput();

return $process->getExitCode();
    }

public function splitLines($output)
    {
        $output = trim($output);

return ((string) $output === '') ? array() : preg_split('{\r?\n}', $output);
    }

/**
     * Get any error output from the last command
     *
     * @return string
     */
    public function getErrorOutput()
    {
        return $this->errorOutput;
    }

public function outputHandler($type, $buffer)
    {
        if ($this->captureOutput) {
            return;
        }

if (null === $this->io) {
            echo $buffer;

return;
        }

if (method_exists($this->io, 'writeRaw')) {
            if (Process::ERR === $type) {
                $this->io->writeErrorRaw($buffer, false);
            } else {
                $this->io->writeRaw($buffer, false);
            }
        } else {
            if (Process::ERR === $type) {
                $this->io->writeError($buffer, false);
            } else {
                $this->io->write($buffer, false);
            }
        }
    }

public static function getTimeout()
    {
        return static::$timeout;
    }

public static function setTimeout($timeout)
    {
        static::$timeout = $timeout;
    }

/**
     * Escapes a string to be used as a shell argument.
     *
     * @param string $argument The argument that will be escaped
     *
     * @return string The escaped argument
     */
    public static function escape($argument)
    {
        return self::escapeArgument($argument);
    }

/**
     * Escapes a string to be used as a shell argument for Symfony Process.
     *
     * This method expects cmd.exe to be started with the /V:ON option, which
     * enables delayed environment variable expansion using ! as the delimiter.
     * If this is not the case, any escaped ^^!var^^! will be transformed to
     * ^!var^! and introduce two unintended carets.
     *
     * Modified from https://github.com/johnstevenson/winbox-args
     * MIT Licensed (c) John Stevenson <john-stevenson@blueyonder.co.uk>
     *
     * @param string $argument
     *
     * @return string
     */
    private static function escapeArgument($argument)
    {
        if ('' === ($argument = (string) $argument)) {
            return escapeshellarg($argument);
        }

if (!Platform::isWindows()) {
            return "'".str_replace("'", "'\\''", $argument)."'";
        }

// New lines break cmd.exe command parsing
        $argument = strtr($argument, "\n", ' ');

$quote = strpbrk($argument, " \t") !== false;
        $argument = preg_replace('/(\\\\*)"/', '$1$1\\"', $argument, -1, $dquotes);
        $meta = $dquotes || preg_match('/%[^%]+%|![^!]+!/', $argument);

if (!$meta && !$quote) {
            $quote = strpbrk($argument, '^&|<>()') !== false;
        }

if ($quote) {
            $argument = '"'.preg_replace('/(\\\\*)$/', '$1$1', $argument).'"';
        }

if ($meta) {
            $argument = preg_replace('/(["^&|<>()%])/', '^$1', $argument);
            $argument = preg_replace('/(!)/', '^^$1', $argument);
        }

return $argument;
    }
}