--- /dev/null
+<?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 static
+ */
+ 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 $this
+ */
+ public function add($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 $this
+ */
+ public function setPrefix($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 $this
+ */
+ public function setArguments(array $arguments)
+ {
+ $this->arguments = $arguments;
+
+ return $this;
+ }
+
+ /**
+ * Sets the working directory.
+ *
+ * @param null|string $cwd The working directory
+ *
+ * @return $this
+ */
+ public function setWorkingDirectory($cwd)
+ {
+ $this->cwd = $cwd;
+
+ return $this;
+ }
+
+ /**
+ * Sets whether environment variables will be inherited or not.
+ *
+ * @param bool $inheritEnv
+ *
+ * @return $this
+ */
+ public function inheritEnvironmentVariables($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 $this
+ */
+ public function setEnv($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 $this
+ */
+ 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 $this
+ *
+ * @throws InvalidArgumentException In case the argument is invalid
+ *
+ * Passing an object as an input is deprecated since version 2.5 and will be removed in 3.0.
+ */
+ public function setInput($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 $this
+ *
+ * @throws InvalidArgumentException
+ */
+ public function setTimeout($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 $this
+ */
+ public function setOption($name, $value)
+ {
+ $this->options[$name] = $value;
+
+ return $this;
+ }
+
+ /**
+ * Disables fetching output and error output from the underlying process.
+ *
+ * @return $this
+ */
+ public function disableOutput()
+ {
+ $this->outputDisabled = true;
+
+ return $this;
+ }
+
+ /**
+ * Enables fetching output and error output from the underlying process.
+ *
+ * @return $this
+ */
+ 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) {
+ // include $_ENV for BC purposes
+ $env = array_replace($_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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