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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\InvalidArgumentException;
use Symfony\Component\Process\Exception\LogicException;
/**
* Process builder.
*
* @author Kris Wallsmith <kris@symfony.com>
*/
class ProcessBuilder
{
private $arguments;
private $cwd;
private $env = array();
private $input;
private $timeout = 60;
private $options = array();
private $inheritEnv = true;
private $prefix = array();
private $outputDisabled = false;
/**
* Constructor.
*
* @param string[] $arguments An array of arguments
*/
public function __construct(array $arguments = array())
{
$this->arguments = $arguments;
}
/**
* Creates a process builder instance.
*
* @param string[] $arguments An array of arguments
*
* @return ProcessBuilder
*/
public static function create(array $arguments = array())
{
return new static($arguments);
}
/**
* Adds an unescaped argument to the command string.
*
* @param string $argument A command argument
*
* @return ProcessBuilder
*/
public function add($argument)
{
$this->arguments[] = $argument;
return $this;
}
/**
* Adds a prefix to the command string.
*
* The prefix is preserved when resetting arguments.
*
* @param string|array $prefix A command prefix or an array of command prefixes
*
* @return ProcessBuilder
*/
public function setPrefix($prefix)
{
$this->prefix = is_array($prefix) ? $prefix : array($prefix);
return $this;
}
/**
* Sets the arguments of the process.
*
* Arguments must not be escaped.
* Previous arguments are removed.
*
* @param string[] $arguments
*
* @return ProcessBuilder
*/
public function setArguments(array $arguments)
{
$this->arguments = $arguments;
return $this;
}
/**
* Sets the working directory.
*
* @param null|string $cwd The working directory
*
* @return ProcessBuilder
*/
public function setWorkingDirectory($cwd)
{
$this->cwd = $cwd;
return $this;
}
/**
* Sets whether environment variables will be inherited or not.
*
* @param bool $inheritEnv
*
* @return ProcessBuilder
*/
public function inheritEnvironmentVariables($inheritEnv = true)
{
$this->inheritEnv = $inheritEnv;
return $this;
}
/**
* Sets an environment variable.
*
* Setting a variable overrides its previous value. Use `null` to unset a
* defined environment variable.
*
* @param string $name The variable name
* @param null|string $value The variable value
*
* @return ProcessBuilder
*/
public function setEnv($name, $value)
{
$this->env[$name] = $value;
return $this;
}
/**
* Adds a set of environment variables.
*
* Already existing environment variables with the same name will be
* overridden by the new values passed to this method. Pass `null` to unset
* a variable.
*
* @param array $variables The variables
*
* @return ProcessBuilder
*/
public function addEnvironmentVariables(array $variables)
{
$this->env = array_replace($this->env, $variables);
return $this;
}
/**
* Sets the input of the process.
*
* @param mixed $input The input as a string
*
* @return ProcessBuilder
*
* @throws InvalidArgumentException In case the argument is invalid
*/
public function setInput($input)
{
$this->input = ProcessUtils::validateInput(__METHOD__, $input);
return $this;
}
/**
* Sets the process timeout.
*
* To disable the timeout, set this value to null.
*
* @param float|null $timeout
*
* @return ProcessBuilder
*
* @throws InvalidArgumentException
*/
public function setTimeout($timeout)
{
if (null === $timeout) {
$this->timeout = null;
return $this;
}
$timeout = (float) $timeout;
if ($timeout < 0) {
throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.');
}
$this->timeout = $timeout;
return $this;
}
/**
* Adds a proc_open option.
*
* @param string $name The option name
* @param string $value The option value
*
* @return ProcessBuilder
*/
public function setOption($name, $value)
{
$this->options[$name] = $value;
return $this;
}
/**
* Disables fetching output and error output from the underlying process.
*
* @return ProcessBuilder
*/
public function disableOutput()
{
$this->outputDisabled = true;
return $this;
}
/**
* Enables fetching output and error output from the underlying process.
*
* @return ProcessBuilder
*/
public function enableOutput()
{
$this->outputDisabled = false;
return $this;
}
/**
* Creates a Process instance and returns it.
*
* @return Process
*
* @throws LogicException In case no arguments have been provided
*/
public function getProcess()
{
if (0 === count($this->prefix) && 0 === count($this->arguments)) {
throw new LogicException('You must add() command arguments before calling getProcess().');
}
$options = $this->options;
$arguments = array_merge($this->prefix, $this->arguments);
$script = implode(' ', array_map(array(__NAMESPACE__.'\\ProcessUtils', 'escapeArgument'), $arguments));
if ($this->inheritEnv) {
$env = array_replace($_ENV, $_SERVER, $this->env);
} else {
$env = $this->env;
}
$process = new Process($script, $this->cwd, $env, $this->input, $this->timeout, $options);
if ($this->outputDisabled) {
$process->disableOutput();
}
return $process;
}
}
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