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vendor/symfony/process/.gitignore

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+vendor/
+composer.lock
+phpunit.xml

vendor/symfony/process/CHANGELOG.md

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+CHANGELOG
+=========
+
+4.2.0
+-----
+
+ * added the `Process::fromShellCommandline()` to run commands in a shell wrapper
+ * deprecated passing a command as string when creating a `Process` instance
+ * deprecated the `Process::setCommandline()` and the `PhpProcess::setPhpBinary()` methods
+ * added the `Process::waitUntil()` method to wait for the process only for a
+   specific output, then continue the normal execution of your application
+
+4.1.0
+-----
+
+ * added the `Process::isTtySupported()` method that allows to check for TTY support
+ * made `PhpExecutableFinder` look for the `PHP_BINARY` env var when searching the php binary
+ * added the `ProcessSignaledException` class to properly catch signaled process errors
+
+4.0.0
+-----
+
+ * environment variables will always be inherited
+ * added a second `array $env = []` argument to the `start()`, `run()`,
+   `mustRun()`, and `restart()` methods of the `Process` class
+ * added a second `array $env = []` argument to the `start()` method of the
+   `PhpProcess` class
+ * the `ProcessUtils::escapeArgument()` method has been removed
+ * the `areEnvironmentVariablesInherited()`, `getOptions()`, and `setOptions()`
+   methods of the `Process` class have been removed
+ * support for passing `proc_open()` options has been removed
+ * removed the `ProcessBuilder` class, use the `Process` class instead
+ * removed the `getEnhanceWindowsCompatibility()` and `setEnhanceWindowsCompatibility()` methods of the `Process` class
+ * passing a not existing working directory to the constructor of the `Symfony\Component\Process\Process` class is not
+   supported anymore
+
+3.4.0
+-----
+
+ * deprecated the ProcessBuilder class
+ * deprecated calling `Process::start()` without setting a valid working directory beforehand (via `setWorkingDirectory()` or constructor)
+
+3.3.0
+-----
+
+ * added command line arrays in the `Process` class
+ * added `$env` argument to `Process::start()`, `run()`, `mustRun()` and `restart()` methods
+ * deprecated the `ProcessUtils::escapeArgument()` method
+ * deprecated not inheriting environment variables
+ * deprecated configuring `proc_open()` options
+ * deprecated configuring enhanced Windows compatibility
+ * deprecated configuring enhanced sigchild compatibility
+
+2.5.0
+-----
+
+ * added support for PTY mode
+ * added the convenience method "mustRun"
+ * deprecation: Process::setStdin() is deprecated in favor of Process::setInput()
+ * deprecation: Process::getStdin() is deprecated in favor of Process::getInput()
+ * deprecation: Process::setInput() and ProcessBuilder::setInput() do not accept non-scalar types
+
+2.4.0
+-----
+
+ * added the ability to define an idle timeout
+
+2.3.0
+-----
+
+ * added ProcessUtils::escapeArgument() to fix the bug in escapeshellarg() function on Windows
+ * added Process::signal()
+ * added Process::getPid()
+ * added support for a TTY mode
+
+2.2.0
+-----
+
+ * added ProcessBuilder::setArguments() to reset the arguments on a builder
+ * added a way to retrieve the standard and error output incrementally
+ * added Process:restart()
+
+2.1.0
+-----
+
+ * added support for non-blocking processes (start(), wait(), isRunning(), stop())
+ * enhanced Windows compatibility
+ * added Process::getExitCodeText() that returns a string representation for
+   the exit code returned by the process
+ * added ProcessBuilder

vendor/symfony/process/Exception/ExceptionInterface.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+/**
+ * Marker Interface for the Process Component.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+interface ExceptionInterface extends \Throwable
+{
+}

vendor/symfony/process/Exception/InvalidArgumentException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+/**
+ * InvalidArgumentException for the Process Component.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ */
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/symfony/process/Exception/LogicException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+/**
+ * LogicException for the Process Component.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ */
+class LogicException extends \LogicException implements ExceptionInterface
+{
+}

vendor/symfony/process/Exception/ProcessFailedException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * Exception for failed processes.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class ProcessFailedException extends RuntimeException
+{
+    private $process;
+
+    public function __construct(Process $process)
+    {
+        if ($process->isSuccessful()) {
+            throw new InvalidArgumentException('Expected a failed process, but the given process was successful.');
+        }
+
+        $error = sprintf('The command "%s" failed.'."\n\nExit Code: %s(%s)\n\nWorking directory: %s",
+            $process->getCommandLine(),
+            $process->getExitCode(),
+            $process->getExitCodeText(),
+            $process->getWorkingDirectory()
+        );
+
+        if (!$process->isOutputDisabled()) {
+            $error .= sprintf("\n\nOutput:\n================\n%s\n\nError Output:\n================\n%s",
+                $process->getOutput(),
+                $process->getErrorOutput()
+            );
+        }
+
+        parent::__construct($error);
+
+        $this->process = $process;
+    }
+
+    public function getProcess()
+    {
+        return $this->process;
+    }
+}

vendor/symfony/process/Exception/ProcessSignaledException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * Exception that is thrown when a process has been signaled.
+ *
+ * @author Sullivan Senechal <soullivaneuh@gmail.com>
+ */
+final class ProcessSignaledException extends RuntimeException
+{
+    private $process;
+
+    public function __construct(Process $process)
+    {
+        $this->process = $process;
+
+        parent::__construct(sprintf('The process has been signaled with signal "%s".', $process->getTermSignal()));
+    }
+
+    public function getProcess(): Process
+    {
+        return $this->process;
+    }
+
+    public function getSignal(): int
+    {
+        return $this->getProcess()->getTermSignal();
+    }
+}

vendor/symfony/process/Exception/ProcessTimedOutException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * Exception that is thrown when a process times out.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class ProcessTimedOutException extends RuntimeException
+{
+    const TYPE_GENERAL = 1;
+    const TYPE_IDLE = 2;
+
+    private $process;
+    private $timeoutType;
+
+    public function __construct(Process $process, int $timeoutType)
+    {
+        $this->process = $process;
+        $this->timeoutType = $timeoutType;
+
+        parent::__construct(sprintf(
+            'The process "%s" exceeded the timeout of %s seconds.',
+            $process->getCommandLine(),
+            $this->getExceededTimeout()
+        ));
+    }
+
+    public function getProcess()
+    {
+        return $this->process;
+    }
+
+    public function isGeneralTimeout()
+    {
+        return self::TYPE_GENERAL === $this->timeoutType;
+    }
+
+    public function isIdleTimeout()
+    {
+        return self::TYPE_IDLE === $this->timeoutType;
+    }
+
+    public function getExceededTimeout()
+    {
+        switch ($this->timeoutType) {
+            case self::TYPE_GENERAL:
+                return $this->process->getTimeout();
+
+            case self::TYPE_IDLE:
+                return $this->process->getIdleTimeout();
+
+            default:
+                throw new \LogicException(sprintf('Unknown timeout type "%d".', $this->timeoutType));
+        }
+    }
+}

vendor/symfony/process/Exception/RuntimeException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Exception;
+
+/**
+ * RuntimeException for the Process Component.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/symfony/process/ExecutableFinder.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process;
+
+/**
+ * Generic executable finder.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class ExecutableFinder
+{
+    private $suffixes = ['.exe', '.bat', '.cmd', '.com'];
+
+    /**
+     * Replaces default suffixes of executable.
+     */
+    public function setSuffixes(array $suffixes)
+    {
+        $this->suffixes = $suffixes;
+    }
+
+    /**
+     * Adds new possible suffix to check for executable.
+     *
+     * @param string $suffix
+     */
+    public function addSuffix($suffix)
+    {
+        $this->suffixes[] = $suffix;
+    }
+
+    /**
+     * Finds an executable by name.
+     *
+     * @param string      $name      The executable name (without the extension)
+     * @param string|null $default   The default to return if no executable is found
+     * @param array       $extraDirs Additional dirs to check into
+     *
+     * @return string|null The executable path or default value
+     */
+    public function find($name, $default = null, array $extraDirs = [])
+    {
+        if (ini_get('open_basedir')) {
+            $searchPath = array_merge(explode(PATH_SEPARATOR, ini_get('open_basedir')), $extraDirs);
+            $dirs = [];
+            foreach ($searchPath as $path) {
+                // Silencing against https://bugs.php.net/69240
+                if (@is_dir($path)) {
+                    $dirs[] = $path;
+                } else {
+                    if (basename($path) == $name && @is_executable($path)) {
+                        return $path;
+                    }
+                }
+            }
+        } else {
+            $dirs = array_merge(
+                explode(PATH_SEPARATOR, getenv('PATH') ?: getenv('Path')),
+                $extraDirs
+            );
+        }
+
+        $suffixes = [''];
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $pathExt = getenv('PATHEXT');
+            $suffixes = array_merge($pathExt ? explode(PATH_SEPARATOR, $pathExt) : $this->suffixes, $suffixes);
+        }
+        foreach ($suffixes as $suffix) {
+            foreach ($dirs as $dir) {
+                if (@is_file($file = $dir.\DIRECTORY_SEPARATOR.$name.$suffix) && ('\\' === \DIRECTORY_SEPARATOR || @is_executable($file))) {
+                    return $file;
+                }
+            }
+        }
+
+        return $default;
+    }
+}

vendor/symfony/process/InputStream.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process;
+
+use Symfony\Component\Process\Exception\RuntimeException;
+
+/**
+ * Provides a way to continuously write to the input of a Process until the InputStream is closed.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class InputStream implements \IteratorAggregate
+{
+    /** @var callable|null */
+    private $onEmpty = null;
+    private $input = [];
+    private $open = true;
+
+    /**
+     * Sets a callback that is called when the write buffer becomes empty.
+     */
+    public function onEmpty(callable $onEmpty = null)
+    {
+        $this->onEmpty = $onEmpty;
+    }
+
+    /**
+     * Appends an input to the write buffer.
+     *
+     * @param resource|string|int|float|bool|\Traversable|null $input The input to append as scalar,
+     *                                                                stream resource or \Traversable
+     */
+    public function write($input)
+    {
+        if (null === $input) {
+            return;
+        }
+        if ($this->isClosed()) {
+            throw new RuntimeException(sprintf('%s is closed', static::class));
+        }
+        $this->input[] = ProcessUtils::validateInput(__METHOD__, $input);
+    }
+
+    /**
+     * Closes the write buffer.
+     */
+    public function close()
+    {
+        $this->open = false;
+    }
+
+    /**
+     * Tells whether the write buffer is closed or not.
+     */
+    public function isClosed()
+    {
+        return !$this->open;
+    }
+
+    public function getIterator()
+    {
+        $this->open = true;
+
+        while ($this->open || $this->input) {
+            if (!$this->input) {
+                yield '';
+                continue;
+            }
+            $current = array_shift($this->input);
+
+            if ($current instanceof \Iterator) {
+                yield from $current;
+            } else {
+                yield $current;
+            }
+            if (!$this->input && $this->open && null !== $onEmpty = $this->onEmpty) {
+                $this->write($onEmpty($this));
+            }
+        }
+    }
+}

vendor/symfony/process/LICENSE

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+Copyright (c) 2004-2019 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/symfony/process/PhpExecutableFinder.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process;
+
+/**
+ * An executable finder specifically designed for the PHP executable.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class PhpExecutableFinder
+{
+    private $executableFinder;
+
+    public function __construct()
+    {
+        $this->executableFinder = new ExecutableFinder();
+    }
+
+    /**
+     * Finds The PHP executable.
+     *
+     * @param bool $includeArgs Whether or not include command arguments
+     *
+     * @return string|false The PHP executable path or false if it cannot be found
+     */
+    public function find($includeArgs = true)
+    {
+        if ($php = getenv('PHP_BINARY')) {
+            if (!is_executable($php)) {
+                $command = '\\' === \DIRECTORY_SEPARATOR ? 'where' : 'command -v';
+                if ($php = strtok(exec($command.' '.escapeshellarg($php)), PHP_EOL)) {
+                    if (!is_executable($php)) {
+                        return false;
+                    }
+                } else {
+                    return false;
+                }
+            }
+
+            return $php;
+        }
+
+        $args = $this->findArguments();
+        $args = $includeArgs && $args ? ' '.implode(' ', $args) : '';
+
+        // PHP_BINARY return the current sapi executable
+        if (PHP_BINARY && \in_array(\PHP_SAPI, ['cli', 'cli-server', 'phpdbg'], true)) {
+            return PHP_BINARY.$args;
+        }
+
+        if ($php = getenv('PHP_PATH')) {
+            if (!@is_executable($php)) {
+                return false;
+            }
+
+            return $php;
+        }
+
+        if ($php = getenv('PHP_PEAR_PHP_BIN')) {
+            if (@is_executable($php)) {
+                return $php;
+            }
+        }
+
+        if (@is_executable($php = PHP_BINDIR.('\\' === \DIRECTORY_SEPARATOR ? '\\php.exe' : '/php'))) {
+            return $php;
+        }
+
+        $dirs = [PHP_BINDIR];
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $dirs[] = 'C:\xampp\php\\';
+        }
+
+        return $this->executableFinder->find('php', false, $dirs);
+    }
+
+    /**
+     * Finds the PHP executable arguments.
+     *
+     * @return array The PHP executable arguments
+     */
+    public function findArguments()
+    {
+        $arguments = [];
+        if ('phpdbg' === \PHP_SAPI) {
+            $arguments[] = '-qrr';
+        }
+
+        return $arguments;
+    }
+}

vendor/symfony/process/PhpProcess.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process;
+
+use Symfony\Component\Process\Exception\RuntimeException;
+
+/**
+ * PhpProcess runs a PHP script in an independent process.
+ *
+ *     $p = new PhpProcess('<?php echo "foo"; ?>');
+ *     $p->run();
+ *     print $p->getOutput()."\n";
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class PhpProcess extends Process
+{
+    /**
+     * @param string      $script  The PHP script to run (as a string)
+     * @param string|null $cwd     The working directory or null to use the working dir of the current PHP process
+     * @param array|null  $env     The environment variables or null to use the same environment as the current PHP process
+     * @param int         $timeout The timeout in seconds
+     * @param array|null  $php     Path to the PHP binary to use with any additional arguments
+     */
+    public function __construct(string $script, string $cwd = null, array $env = null, int $timeout = 60, array $php = null)
+    {
+        if (null === $php) {
+            $executableFinder = new PhpExecutableFinder();
+            $php = $executableFinder->find(false);
+            $php = false === $php ? null : array_merge([$php], $executableFinder->findArguments());
+        }
+        if ('phpdbg' === \PHP_SAPI) {
+            $file = tempnam(sys_get_temp_dir(), 'dbg');
+            file_put_contents($file, $script);
+            register_shutdown_function('unlink', $file);
+            $php[] = $file;
+            $script = null;
+        }
+
+        parent::__construct($php, $cwd, $env, $script, $timeout);
+    }
+
+    /**
+     * Sets the path to the PHP binary to use.
+     *
+     * @deprecated since Symfony 4.2, use the $php argument of the constructor instead.
+     */
+    public function setPhpBinary($php)
+    {
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the $php argument of the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+
+        $this->setCommandLine($php);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function start(callable $callback = null, array $env = [])
+    {
+        if (null === $this->getCommandLine()) {
+            throw new RuntimeException('Unable to find the PHP executable.');
+        }
+
+        parent::start($callback, $env);
+    }
+}

vendor/symfony/process/Pipes/AbstractPipes.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Pipes;
+
+use Symfony\Component\Process\Exception\InvalidArgumentException;
+
+/**
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+abstract class AbstractPipes implements PipesInterface
+{
+    public $pipes = [];
+
+    private $inputBuffer = '';
+    private $input;
+    private $blocked = true;
+    private $lastError;
+
+    /**
+     * @param resource|string|int|float|bool|\Iterator|null $input
+     */
+    public function __construct($input)
+    {
+        if (\is_resource($input) || $input instanceof \Iterator) {
+            $this->input = $input;
+        } elseif (\is_string($input)) {
+            $this->inputBuffer = $input;
+        } else {
+            $this->inputBuffer = (string) $input;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function close()
+    {
+        foreach ($this->pipes as $pipe) {
+            fclose($pipe);
+        }
+        $this->pipes = [];
+    }
+
+    /**
+     * Returns true if a system call has been interrupted.
+     *
+     * @return bool
+     */
+    protected function hasSystemCallBeenInterrupted()
+    {
+        $lastError = $this->lastError;
+        $this->lastError = null;
+
+        // stream_select returns false when the `select` system call is interrupted by an incoming signal
+        return null !== $lastError && false !== stripos($lastError, 'interrupted system call');
+    }
+
+    /**
+     * Unblocks streams.
+     */
+    protected function unblock()
+    {
+        if (!$this->blocked) {
+            return;
+        }
+
+        foreach ($this->pipes as $pipe) {
+            stream_set_blocking($pipe, 0);
+        }
+        if (\is_resource($this->input)) {
+            stream_set_blocking($this->input, 0);
+        }
+
+        $this->blocked = false;
+    }
+
+    /**
+     * Writes input to stdin.
+     *
+     * @return array|null
+     *
+     * @throws InvalidArgumentException When an input iterator yields a non supported value
+     */
+    protected function write()
+    {
+        if (!isset($this->pipes[0])) {
+            return null;
+        }
+        $input = $this->input;
+
+        if ($input instanceof \Iterator) {
+            if (!$input->valid()) {
+                $input = null;
+            } elseif (\is_resource($input = $input->current())) {
+                stream_set_blocking($input, 0);
+            } elseif (!isset($this->inputBuffer[0])) {
+                if (!\is_string($input)) {
+                    if (!is_scalar($input)) {
+                        throw new InvalidArgumentException(sprintf('%s yielded a value of type "%s", but only scalars and stream resources are supported', \get_class($this->input), \gettype($input)));
+                    }
+                    $input = (string) $input;
+                }
+                $this->inputBuffer = $input;
+                $this->input->next();
+                $input = null;
+            } else {
+                $input = null;
+            }
+        }
+
+        $r = $e = [];
+        $w = [$this->pipes[0]];
+
+        // let's have a look if something changed in streams
+        if (false === @stream_select($r, $w, $e, 0, 0)) {
+            return null;
+        }
+
+        foreach ($w as $stdin) {
+            if (isset($this->inputBuffer[0])) {
+                $written = fwrite($stdin, $this->inputBuffer);
+                $this->inputBuffer = substr($this->inputBuffer, $written);
+                if (isset($this->inputBuffer[0])) {
+                    return [$this->pipes[0]];
+                }
+            }
+
+            if ($input) {
+                for (;;) {
+                    $data = fread($input, self::CHUNK_SIZE);
+                    if (!isset($data[0])) {
+                        break;
+                    }
+                    $written = fwrite($stdin, $data);
+                    $data = substr($data, $written);
+                    if (isset($data[0])) {
+                        $this->inputBuffer = $data;
+
+                        return [$this->pipes[0]];
+                    }
+                }
+                if (feof($input)) {
+                    if ($this->input instanceof \Iterator) {
+                        $this->input->next();
+                    } else {
+                        $this->input = null;
+                    }
+                }
+            }
+        }
+
+        // no input to read on resource, buffer is empty
+        if (!isset($this->inputBuffer[0]) && !($this->input instanceof \Iterator ? $this->input->valid() : $this->input)) {
+            $this->input = null;
+            fclose($this->pipes[0]);
+            unset($this->pipes[0]);
+        } elseif (!$w) {
+            return [$this->pipes[0]];
+        }
+
+        return null;
+    }
+
+    /**
+     * @internal
+     */
+    public function handleError($type, $msg)
+    {
+        $this->lastError = $msg;
+    }
+}

vendor/symfony/process/Pipes/PipesInterface.php

@@ -0,0 +1,67 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Pipes;
+
+/**
+ * PipesInterface manages descriptors and pipes for the use of proc_open.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+interface PipesInterface
+{
+    const CHUNK_SIZE = 16384;
+
+    /**
+     * Returns an array of descriptors for the use of proc_open.
+     *
+     * @return array
+     */
+    public function getDescriptors();
+
+    /**
+     * Returns an array of filenames indexed by their related stream in case these pipes use temporary files.
+     *
+     * @return string[]
+     */
+    public function getFiles();
+
+    /**
+     * Reads data in file handles and pipes.
+     *
+     * @param bool $blocking Whether to use blocking calls or not
+     * @param bool $close    Whether to close pipes if they've reached EOF
+     *
+     * @return string[] An array of read data indexed by their fd
+     */
+    public function readAndWrite($blocking, $close = false);
+
+    /**
+     * Returns if the current state has open file handles or pipes.
+     *
+     * @return bool
+     */
+    public function areOpen();
+
+    /**
+     * Returns if pipes are able to read output.
+     *
+     * @return bool
+     */
+    public function haveReadSupport();
+
+    /**
+     * Closes file handles and pipes.
+     */
+    public function close();
+}

vendor/symfony/process/Pipes/UnixPipes.php

@@ -0,0 +1,153 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Pipes;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * UnixPipes implementation uses unix pipes as handles.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+class UnixPipes extends AbstractPipes
+{
+    private $ttyMode;
+    private $ptyMode;
+    private $haveReadSupport;
+
+    public function __construct(?bool $ttyMode, bool $ptyMode, $input, bool $haveReadSupport)
+    {
+        $this->ttyMode = $ttyMode;
+        $this->ptyMode = $ptyMode;
+        $this->haveReadSupport = $haveReadSupport;
+
+        parent::__construct($input);
+    }
+
+    public function __destruct()
+    {
+        $this->close();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDescriptors()
+    {
+        if (!$this->haveReadSupport) {
+            $nullstream = fopen('/dev/null', 'c');
+
+            return [
+                ['pipe', 'r'],
+                $nullstream,
+                $nullstream,
+            ];
+        }
+
+        if ($this->ttyMode) {
+            return [
+                ['file', '/dev/tty', 'r'],
+                ['file', '/dev/tty', 'w'],
+                ['file', '/dev/tty', 'w'],
+            ];
+        }
+
+        if ($this->ptyMode && Process::isPtySupported()) {
+            return [
+                ['pty'],
+                ['pty'],
+                ['pty'],
+            ];
+        }
+
+        return [
+            ['pipe', 'r'],
+            ['pipe', 'w'], // stdout
+            ['pipe', 'w'], // stderr
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFiles()
+    {
+        return [];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function readAndWrite($blocking, $close = false)
+    {
+        $this->unblock();
+        $w = $this->write();
+
+        $read = $e = [];
+        $r = $this->pipes;
+        unset($r[0]);
+
+        // let's have a look if something changed in streams
+        set_error_handler([$this, 'handleError']);
+        if (($r || $w) && false === stream_select($r, $w, $e, 0, $blocking ? Process::TIMEOUT_PRECISION * 1E6 : 0)) {
+            restore_error_handler();
+            // if a system call has been interrupted, forget about it, let's try again
+            // otherwise, an error occurred, let's reset pipes
+            if (!$this->hasSystemCallBeenInterrupted()) {
+                $this->pipes = [];
+            }
+
+            return $read;
+        }
+        restore_error_handler();
+
+        foreach ($r as $pipe) {
+            // prior PHP 5.4 the array passed to stream_select is modified and
+            // lose key association, we have to find back the key
+            $read[$type = array_search($pipe, $this->pipes, true)] = '';
+
+            do {
+                $data = fread($pipe, self::CHUNK_SIZE);
+                $read[$type] .= $data;
+            } while (isset($data[0]) && ($close || isset($data[self::CHUNK_SIZE - 1])));
+
+            if (!isset($read[$type][0])) {
+                unset($read[$type]);
+            }
+
+            if ($close && feof($pipe)) {
+                fclose($pipe);
+                unset($this->pipes[$type]);
+            }
+        }
+
+        return $read;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function haveReadSupport()
+    {
+        return $this->haveReadSupport;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function areOpen()
+    {
+        return (bool) $this->pipes;
+    }
+}

vendor/symfony/process/Pipes/WindowsPipes.php

@@ -0,0 +1,191 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Pipes;
+
+use Symfony\Component\Process\Exception\RuntimeException;
+use Symfony\Component\Process\Process;
+
+/**
+ * WindowsPipes implementation uses temporary files as handles.
+ *
+ * @see https://bugs.php.net/51800
+ * @see https://bugs.php.net/65650
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+class WindowsPipes extends AbstractPipes
+{
+    private $files = [];
+    private $fileHandles = [];
+    private $lockHandles = [];
+    private $readBytes = [
+        Process::STDOUT => 0,
+        Process::STDERR => 0,
+    ];
+    private $haveReadSupport;
+
+    public function __construct($input, bool $haveReadSupport)
+    {
+        $this->haveReadSupport = $haveReadSupport;
+
+        if ($this->haveReadSupport) {
+            // Fix for PHP bug #51800: reading from STDOUT pipe hangs forever on Windows if the output is too big.
+            // Workaround for this problem is to use temporary files instead of pipes on Windows platform.
+            //
+            // @see https://bugs.php.net/51800
+            $pipes = [
+                Process::STDOUT => Process::OUT,
+                Process::STDERR => Process::ERR,
+            ];
+            $tmpDir = sys_get_temp_dir();
+            $lastError = 'unknown reason';
+            set_error_handler(function ($type, $msg) use (&$lastError) { $lastError = $msg; });
+            for ($i = 0;; ++$i) {
+                foreach ($pipes as $pipe => $name) {
+                    $file = sprintf('%s\\sf_proc_%02X.%s', $tmpDir, $i, $name);
+
+                    if (!$h = fopen($file.'.lock', 'w')) {
+                        restore_error_handler();
+                        throw new RuntimeException(sprintf('A temporary file could not be opened to write the process output: %s', $lastError));
+                    }
+                    if (!flock($h, LOCK_EX | LOCK_NB)) {
+                        continue 2;
+                    }
+                    if (isset($this->lockHandles[$pipe])) {
+                        flock($this->lockHandles[$pipe], LOCK_UN);
+                        fclose($this->lockHandles[$pipe]);
+                    }
+                    $this->lockHandles[$pipe] = $h;
+
+                    if (!fclose(fopen($file, 'w')) || !$h = fopen($file, 'r')) {
+                        flock($this->lockHandles[$pipe], LOCK_UN);
+                        fclose($this->lockHandles[$pipe]);
+                        unset($this->lockHandles[$pipe]);
+                        continue 2;
+                    }
+                    $this->fileHandles[$pipe] = $h;
+                    $this->files[$pipe] = $file;
+                }
+                break;
+            }
+            restore_error_handler();
+        }
+
+        parent::__construct($input);
+    }
+
+    public function __destruct()
+    {
+        $this->close();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDescriptors()
+    {
+        if (!$this->haveReadSupport) {
+            $nullstream = fopen('NUL', 'c');
+
+            return [
+                ['pipe', 'r'],
+                $nullstream,
+                $nullstream,
+            ];
+        }
+
+        // We're not using pipe on Windows platform as it hangs (https://bugs.php.net/51800)
+        // We're not using file handles as it can produce corrupted output https://bugs.php.net/65650
+        // So we redirect output within the commandline and pass the nul device to the process
+        return [
+            ['pipe', 'r'],
+            ['file', 'NUL', 'w'],
+            ['file', 'NUL', 'w'],
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFiles()
+    {
+        return $this->files;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function readAndWrite($blocking, $close = false)
+    {
+        $this->unblock();
+        $w = $this->write();
+        $read = $r = $e = [];
+
+        if ($blocking) {
+            if ($w) {
+                @stream_select($r, $w, $e, 0, Process::TIMEOUT_PRECISION * 1E6);
+            } elseif ($this->fileHandles) {
+                usleep(Process::TIMEOUT_PRECISION * 1E6);
+            }
+        }
+        foreach ($this->fileHandles as $type => $fileHandle) {
+            $data = stream_get_contents($fileHandle, -1, $this->readBytes[$type]);
+
+            if (isset($data[0])) {
+                $this->readBytes[$type] += \strlen($data);
+                $read[$type] = $data;
+            }
+            if ($close) {
+                ftruncate($fileHandle, 0);
+                fclose($fileHandle);
+                flock($this->lockHandles[$type], LOCK_UN);
+                fclose($this->lockHandles[$type]);
+                unset($this->fileHandles[$type], $this->lockHandles[$type]);
+            }
+        }
+
+        return $read;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function haveReadSupport()
+    {
+        return $this->haveReadSupport;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function areOpen()
+    {
+        return $this->pipes && $this->fileHandles;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function close()
+    {
+        parent::close();
+        foreach ($this->fileHandles as $type => $handle) {
+            ftruncate($handle, 0);
+            fclose($handle);
+            flock($this->lockHandles[$type], LOCK_UN);
+            fclose($this->lockHandles[$type]);
+        }
+        $this->fileHandles = $this->lockHandles = [];
+    }
+}

vendor/symfony/process/ProcessUtils.php

@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process;
+
+use Symfony\Component\Process\Exception\InvalidArgumentException;
+
+/**
+ * ProcessUtils is a bunch of utility methods.
+ *
+ * This class contains static methods only and is not meant to be instantiated.
+ *
+ * @author Martin Hasoň <martin.hason@gmail.com>
+ */
+class ProcessUtils
+{
+    /**
+     * This class should not be instantiated.
+     */
+    private function __construct()
+    {
+    }
+
+    /**
+     * Validates and normalizes a Process input.
+     *
+     * @param string $caller The name of method call that validates the input
+     * @param mixed  $input  The input to validate
+     *
+     * @return mixed The validated input
+     *
+     * @throws InvalidArgumentException In case the input is not valid
+     */
+    public static function validateInput($caller, $input)
+    {
+        if (null !== $input) {
+            if (\is_resource($input)) {
+                return $input;
+            }
+            if (\is_string($input)) {
+                return $input;
+            }
+            if (is_scalar($input)) {
+                return (string) $input;
+            }
+            if ($input instanceof Process) {
+                return $input->getIterator($input::ITER_SKIP_ERR);
+            }
+            if ($input instanceof \Iterator) {
+                return $input;
+            }
+            if ($input instanceof \Traversable) {
+                return new \IteratorIterator($input);
+            }
+
+            throw new InvalidArgumentException(sprintf('%s only accepts strings, Traversable objects or stream resources.', $caller));
+        }
+
+        return $input;
+    }
+}

vendor/symfony/process/README.md

@@ -0,0 +1,13 @@
+Process Component
+=================
+
+The Process component executes commands in sub-processes.
+
+Resources
+---------
+
+  * [Documentation](https://symfony.com/doc/current/components/process.html)
+  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+  * [Report issues](https://github.com/symfony/symfony/issues) and
+    [send Pull Requests](https://github.com/symfony/symfony/pulls)
+    in the [main Symfony repository](https://github.com/symfony/symfony)

vendor/symfony/process/Tests/ErrorProcessInitiator.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Tests;
+
+use Symfony\Component\Process\Exception\ProcessTimedOutException;
+use Symfony\Component\Process\Process;
+
+require \dirname(__DIR__).'/vendor/autoload.php';
+
+list('e' => $php) = getopt('e:') + ['e' => 'php'];
+
+try {
+    $process = new Process("exec $php -r \"echo 'ready'; trigger_error('error', E_USER_ERROR);\"");
+    $process->start();
+    $process->setTimeout(0.5);
+    while (false === strpos($process->getOutput(), 'ready')) {
+        usleep(1000);
+    }
+    $process->signal(SIGSTOP);
+    $process->wait();
+
+    return $process->getExitCode();
+} catch (ProcessTimedOutException $t) {
+    echo $t->getMessage().PHP_EOL;
+
+    return 1;
+}

vendor/symfony/process/Tests/ExecutableFinderTest.php

@@ -0,0 +1,178 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Process\ExecutableFinder;
+
+/**
+ * @author Chris Smith <chris@cs278.org>
+ */
+class ExecutableFinderTest extends TestCase
+{
+    private $path;
+
+    protected function tearDown(): void
+    {
+        if ($this->path) {
+            // Restore path if it was changed.
+            putenv('PATH='.$this->path);
+        }
+    }
+
+    private function setPath($path)
+    {
+        $this->path = getenv('PATH');
+        putenv('PATH='.$path);
+    }
+
+    public function testFind()
+    {
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+
+        $this->setPath(\dirname(PHP_BINARY));
+
+        $finder = new ExecutableFinder();
+        $result = $finder->find($this->getPhpBinaryName());
+
+        $this->assertSamePath(PHP_BINARY, $result);
+    }
+
+    public function testFindWithDefault()
+    {
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+
+        $expected = 'defaultValue';
+
+        $this->setPath('');
+
+        $finder = new ExecutableFinder();
+        $result = $finder->find('foo', $expected);
+
+        $this->assertEquals($expected, $result);
+    }
+
+    public function testFindWithNullAsDefault()
+    {
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+
+        $this->setPath('');
+
+        $finder = new ExecutableFinder();
+
+        $result = $finder->find('foo');
+
+        $this->assertNull($result);
+    }
+
+    public function testFindWithExtraDirs()
+    {
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+
+        $this->setPath('');
+
+        $extraDirs = [\dirname(PHP_BINARY)];
+
+        $finder = new ExecutableFinder();
+        $result = $finder->find($this->getPhpBinaryName(), null, $extraDirs);
+
+        $this->assertSamePath(PHP_BINARY, $result);
+    }
+
+    public function testFindWithOpenBaseDir()
+    {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Cannot run test on windows');
+        }
+
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+
+        $this->iniSet('open_basedir', \dirname(PHP_BINARY).PATH_SEPARATOR.'/');
+
+        $finder = new ExecutableFinder();
+        $result = $finder->find($this->getPhpBinaryName());
+
+        $this->assertSamePath(PHP_BINARY, $result);
+    }
+
+    public function testFindProcessInOpenBasedir()
+    {
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Cannot run test on windows');
+        }
+
+        $this->setPath('');
+        $this->iniSet('open_basedir', PHP_BINARY.PATH_SEPARATOR.'/');
+
+        $finder = new ExecutableFinder();
+        $result = $finder->find($this->getPhpBinaryName(), false);
+
+        $this->assertSamePath(PHP_BINARY, $result);
+    }
+
+    /**
+     * @requires PHP 5.4
+     */
+    public function testFindBatchExecutableOnWindows()
+    {
+        if (ini_get('open_basedir')) {
+            $this->markTestSkipped('Cannot test when open_basedir is set');
+        }
+        if ('\\' !== \DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Can be only tested on windows');
+        }
+
+        $target = tempnam(sys_get_temp_dir(), 'example-windows-executable');
+
+        touch($target);
+        touch($target.'.BAT');
+
+        $this->assertFalse(is_executable($target));
+
+        $this->setPath(sys_get_temp_dir());
+
+        $finder = new ExecutableFinder();
+        $result = $finder->find(basename($target), false);
+
+        unlink($target);
+        unlink($target.'.BAT');
+
+        $this->assertSamePath($target.'.BAT', $result);
+    }
+
+    private function assertSamePath($expected, $tested)
+    {
+        if ('\\' === \DIRECTORY_SEPARATOR) {
+            $this->assertEquals(strtolower($expected), strtolower($tested));
+        } else {
+            $this->assertEquals($expected, $tested);
+        }
+    }
+
+    private function getPhpBinaryName()
+    {
+        return basename(PHP_BINARY, '\\' === \DIRECTORY_SEPARATOR ? '.exe' : '');
+    }
+}

vendor/symfony/process/Tests/KillableProcessWithOutput.php

@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+$outputs = [
+    'First iteration output',
+    'Second iteration output',
+    'One more iteration output',
+    'This took more time',
+];
+
+$iterationTime = 10000;
+
+foreach ($outputs as $output) {
+    usleep($iterationTime);
+    $iterationTime *= 10;
+    echo $output."\n";
+}

vendor/symfony/process/Tests/NonStopableProcess.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Runs a PHP script that can be stopped only with a SIGKILL (9) signal for 3 seconds.
+ *
+ * @args duration Run this script with a custom duration
+ *
+ * @example `php NonStopableProcess.php 42` will run the script for 42 seconds
+ */
+function handleSignal($signal)
+{
+    switch ($signal) {
+        case SIGTERM:
+            $name = 'SIGTERM';
+            break;
+        case SIGINT:
+            $name = 'SIGINT';
+            break;
+        default:
+            $name = $signal.' (unknown)';
+            break;
+    }
+
+    echo "signal $name\n";
+}
+
+pcntl_signal(SIGTERM, 'handleSignal');
+pcntl_signal(SIGINT, 'handleSignal');
+
+echo 'received ';
+
+$duration = isset($argv[1]) ? (int) $argv[1] : 3;
+$start = microtime(true);
+
+while ($duration > (microtime(true) - $start)) {
+    usleep(10000);
+    pcntl_signal_dispatch();
+}

vendor/symfony/process/Tests/PhpExecutableFinderTest.php

@@ -0,0 +1,49 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Process\PhpExecutableFinder;
+
+/**
+ * @author Robert Schönthal <seroscho@googlemail.com>
+ */
+class PhpExecutableFinderTest extends TestCase
+{
+    /**
+     * tests find() with the constant PHP_BINARY.
+     */
+    public function testFind()
+    {
+        $f = new PhpExecutableFinder();
+
+        $current = PHP_BINARY;
+        $args = 'phpdbg' === \PHP_SAPI ? ' -qrr' : '';
+
+        $this->assertEquals($current.$args, $f->find(), '::find() returns the executable PHP');
+        $this->assertEquals($current, $f->find(false), '::find() returns the executable PHP');
+    }
+
+    /**
+     * tests find() with the env var PHP_PATH.
+     */
+    public function testFindArguments()
+    {
+        $f = new PhpExecutableFinder();
+
+        if ('phpdbg' === \PHP_SAPI) {
+            $this->assertEquals($f->findArguments(), ['-qrr'], '::findArguments() returns phpdbg arguments');
+        } else {
+            $this->assertEquals($f->findArguments(), [], '::findArguments() returns no arguments');
+        }
+    }
+}

vendor/symfony/process/Tests/PhpProcessTest.php

@@ -0,0 +1,63 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Process\PhpExecutableFinder;
+use Symfony\Component\Process\PhpProcess;
+
+class PhpProcessTest extends TestCase
+{
+    public function testNonBlockingWorks()
+    {
+        $expected = 'hello world!';
+        $process = new PhpProcess(<<<PHP
+<?php echo '$expected';
+PHP
+        );
+        $process->start();
+        $process->wait();
+        $this->assertEquals($expected, $process->getOutput());
+    }
+
+    public function testCommandLine()
+    {
+        $process = new PhpProcess(<<<'PHP'
+<?php echo phpversion().PHP_SAPI;
+PHP
+        );
+
+        $commandLine = $process->getCommandLine();
+
+        $process->start();
+        $this->assertStringContainsString($commandLine, $process->getCommandLine(), '::getCommandLine() returns the command line of PHP after start');
+
+        $process->wait();
+        $this->assertStringContainsString($commandLine, $process->getCommandLine(), '::getCommandLine() returns the command line of PHP after wait');
+
+        $this->assertSame(PHP_VERSION.\PHP_SAPI, $process->getOutput());
+    }
+
+    public function testPassingPhpExplicitly()
+    {
+        $finder = new PhpExecutableFinder();
+        $php = array_merge([$finder->find(false)], $finder->findArguments());
+
+        $expected = 'hello world!';
+        $script = <<<PHP
+<?php echo '$expected';
+PHP;
+        $process = new PhpProcess($script, null, null, 60, $php);
+        $process->run();
+        $this->assertEquals($expected, $process->getOutput());
+    }
+}

vendor/symfony/process/Tests/PipeStdinInStdoutStdErrStreamSelect.php

@@ -0,0 +1,72 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+define('ERR_SELECT_FAILED', 1);
+define('ERR_TIMEOUT', 2);
+define('ERR_READ_FAILED', 3);
+define('ERR_WRITE_FAILED', 4);
+
+$read = [STDIN];
+$write = [STDOUT, STDERR];
+
+stream_set_blocking(STDIN, 0);
+stream_set_blocking(STDOUT, 0);
+stream_set_blocking(STDERR, 0);
+
+$out = $err = '';
+while ($read || $write) {
+    $r = $read;
+    $w = $write;
+    $e = null;
+    $n = stream_select($r, $w, $e, 5);
+
+    if (false === $n) {
+        die(ERR_SELECT_FAILED);
+    } elseif ($n < 1) {
+        die(ERR_TIMEOUT);
+    }
+
+    if (in_array(STDOUT, $w) && strlen($out) > 0) {
+        $written = fwrite(STDOUT, (string) $out, 32768);
+        if (false === $written) {
+            die(ERR_WRITE_FAILED);
+        }
+        $out = (string) substr($out, $written);
+    }
+    if (null === $read && '' === $out) {
+        $write = array_diff($write, [STDOUT]);
+    }
+
+    if (in_array(STDERR, $w) && strlen($err) > 0) {
+        $written = fwrite(STDERR, (string) $err, 32768);
+        if (false === $written) {
+            die(ERR_WRITE_FAILED);
+        }
+        $err = (string) substr($err, $written);
+    }
+    if (null === $read && '' === $err) {
+        $write = array_diff($write, [STDERR]);
+    }
+
+    if ($r) {
+        $str = fread(STDIN, 32768);
+        if (false !== $str) {
+            $out .= $str;
+            $err .= $str;
+        }
+        if (false === $str || feof(STDIN)) {
+            $read = null;
+            if (!feof(STDIN)) {
+                die(ERR_READ_FAILED);
+            }
+        }
+    }
+}

vendor/symfony/process/Tests/ProcessFailedExceptionTest.php

@@ -0,0 +1,133 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Process\Exception\ProcessFailedException;
+
+/**
+ * @author Sebastian Marek <proofek@gmail.com>
+ */
+class ProcessFailedExceptionTest extends TestCase
+{
+    /**
+     * tests ProcessFailedException throws exception if the process was successful.
+     */
+    public function testProcessFailedExceptionThrowsException()
+    {
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful'])->setConstructorArgs([['php']])->getMock();
+        $process->expects($this->once())
+            ->method('isSuccessful')
+            ->willReturn(true);
+
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('Expected a failed process, but the given process was successful.');
+
+        new ProcessFailedException($process);
+    }
+
+    /**
+     * tests ProcessFailedException uses information from process output
+     * to generate exception message.
+     */
+    public function testProcessFailedExceptionPopulatesInformationFromProcessOutput()
+    {
+        $cmd = 'php';
+        $exitCode = 1;
+        $exitText = 'General error';
+        $output = 'Command output';
+        $errorOutput = 'FATAL: Unexpected error';
+        $workingDirectory = getcwd();
+
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful', 'getOutput', 'getErrorOutput', 'getExitCode', 'getExitCodeText', 'isOutputDisabled', 'getWorkingDirectory'])->setConstructorArgs([[$cmd]])->getMock();
+        $process->expects($this->once())
+            ->method('isSuccessful')
+            ->willReturn(false);
+
+        $process->expects($this->once())
+            ->method('getOutput')
+            ->willReturn($output);
+
+        $process->expects($this->once())
+            ->method('getErrorOutput')
+            ->willReturn($errorOutput);
+
+        $process->expects($this->once())
+            ->method('getExitCode')
+            ->willReturn($exitCode);
+
+        $process->expects($this->once())
+            ->method('getExitCodeText')
+            ->willReturn($exitText);
+
+        $process->expects($this->once())
+            ->method('isOutputDisabled')
+            ->willReturn(false);
+
+        $process->expects($this->once())
+            ->method('getWorkingDirectory')
+            ->willReturn($workingDirectory);
+
+        $exception = new ProcessFailedException($process);
+
+        $this->assertEquals(
+            "The command \"$cmd\" failed.\n\nExit Code: $exitCode($exitText)\n\nWorking directory: {$workingDirectory}\n\nOutput:\n================\n{$output}\n\nError Output:\n================\n{$errorOutput}",
+            str_replace("'php'", 'php', $exception->getMessage())
+        );
+    }
+
+    /**
+     * Tests that ProcessFailedException does not extract information from
+     * process output if it was previously disabled.
+     */
+    public function testDisabledOutputInFailedExceptionDoesNotPopulateOutput()
+    {
+        $cmd = 'php';
+        $exitCode = 1;
+        $exitText = 'General error';
+        $workingDirectory = getcwd();
+
+        $process = $this->getMockBuilder('Symfony\Component\Process\Process')->setMethods(['isSuccessful', 'isOutputDisabled', 'getExitCode', 'getExitCodeText', 'getOutput', 'getErrorOutput', 'getWorkingDirectory'])->setConstructorArgs([[$cmd]])->getMock();
+        $process->expects($this->once())
+            ->method('isSuccessful')
+            ->willReturn(false);
+
+        $process->expects($this->never())
+            ->method('getOutput');
+
+        $process->expects($this->never())
+            ->method('getErrorOutput');
+
+        $process->expects($this->once())
+            ->method('getExitCode')
+            ->willReturn($exitCode);
+
+        $process->expects($this->once())
+            ->method('getExitCodeText')
+            ->willReturn($exitText);
+
+        $process->expects($this->once())
+            ->method('isOutputDisabled')
+            ->willReturn(true);
+
+        $process->expects($this->once())
+            ->method('getWorkingDirectory')
+            ->willReturn($workingDirectory);
+
+        $exception = new ProcessFailedException($process);
+
+        $this->assertEquals(
+            "The command \"$cmd\" failed.\n\nExit Code: $exitCode($exitText)\n\nWorking directory: {$workingDirectory}",
+            str_replace("'php'", 'php', $exception->getMessage())
+        );
+    }
+}

vendor/symfony/process/Tests/SignalListener.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+pcntl_signal(SIGUSR1, function () { echo 'SIGUSR1'; exit; });
+
+echo 'Caught ';
+
+$n = 0;
+
+while ($n++ < 400) {
+    usleep(10000);
+    pcntl_signal_dispatch();
+}

vendor/symfony/process/composer.json

@@ -0,0 +1,33 @@
+{
+    "name": "symfony/process",
+    "type": "library",
+    "description": "Symfony Process Component",
+    "keywords": [],
+    "homepage": "https://symfony.com",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Fabien Potencier",
+            "email": "fabien@symfony.com"
+        },
+        {
+            "name": "Symfony Community",
+            "homepage": "https://symfony.com/contributors"
+        }
+    ],
+    "require": {
+        "php": "^7.1.3"
+    },
+    "autoload": {
+        "psr-4": { "Symfony\\Component\\Process\\": "" },
+        "exclude-from-classmap": [
+            "/Tests/"
+        ]
+    },
+    "minimum-stability": "dev",
+    "extra": {
+        "branch-alias": {
+            "dev-master": "4.3-dev"
+        }
+    }
+}

vendor/symfony/process/phpunit.xml.dist

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/5.2/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Symfony Process Component Test Suite">
+            <directory>./Tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./</directory>
+            <exclude>
+                <directory>./Tests</directory>
+                <directory>./vendor</directory>
+            </exclude>
+        </whitelist>
+    </filter>
+</phpunit>