<?php
namespace Symfony\Component\Process;
class Process
{
const ERR = 'err';
const OUT = 'out';
const STATUS_READY = 'ready';
const STATUS_STARTED = 'started';
const STATUS_TERMINATED = 'terminated';
const STDIN = 0;
const STDOUT = 1;
const STDERR = 2;
private $commandline;
private $cwd;
private $env;
private $stdin;
private $timeout;
private $options;
private $exitcode;
private $processInformation;
private $stdout;
private $stderr;
private $enhanceWindowsCompatibility;
private $pipes;
private $process;
private $status = self::STATUS_READY;
private $fileHandles;
private $readBytes;
public static $exitCodes = array(
0 => 'OK',
1 => 'General error',
2 => 'Misuse of shell builtins',
126 => 'Invoked command cannot execute',
127 => 'Command not found',
128 => 'Invalid exit argument',
// signals
129 => 'Hangup',
130 => 'Interrupt',
131 => 'Quit and dump core',
132 => 'Illegal instruction',
133 => 'Trace/breakpoint trap',
134 => 'Process aborted',
135 => 'Bus error: "access to undefined portion of memory object"',
136 => 'Floating point exception: "erroneous arithmetic operation"',
137 => 'Kill (terminate immediately)',
138 => 'User-defined 1',
139 => 'Segmentation violation',
140 => 'User-defined 2',
141 => 'Write to pipe with no one reading',
142 => 'Signal raised by alarm',
143 => 'Termination (request to terminate)',
// 144 - not defined
145 => 'Child process terminated, stopped (or continued*)',
146 => 'Continue if stopped',
147 => 'Stop executing temporarily',
148 => 'Terminal stop signal',
149 => 'Background process attempting to read from tty ("in")',
150 => 'Background process attempting to write to tty ("out")',
151 => 'Urgent data available on socket',
152 => 'CPU time limit exceeded',
153 => 'File size limit exceeded',
154 => 'Signal raised by timer counting virtual time: "virtual timer expired"',
155 => 'Profiling timer expired',
// 156 - not defined
157 => 'Pollable event',
// 158 - not defined
159 => 'Bad syscall',
);
public function __construct($commandline, $cwd = null, array $env = null, $stdin = null, $timeout = 60, array $options = array())
{
if (!function_exists('proc_open')) {
throw new \RuntimeException('The Process class relies on proc_open, which is not available on your PHP installation.');
}
$this->commandline = $commandline;
$this->cwd = null === $cwd ? getcwd() : $cwd;
if (null !== $env) {
$this->env = array();
foreach ($env as $key => $value) {
$this->env[(binary) $key] = (binary) $value;
}
} else {
$this->env = null;
}
$this->stdin = $stdin;
$this->setTimeout($timeout);
$this->enhanceWindowsCompatibility = true;
$this->options = array_replace(array('suppress_errors' => true, 'binary_pipes' => true), $options);
}
public function __destruct()
{
// stop() will check if we have a process running.
$this->stop();
}
public function run($callback = null)
{
$this->start($callback);
return $this->wait($callback);
}
public function start($callback = null)
{
if ($this->isRunning()) {
throw new \RuntimeException('Process is already running');
}
$this->stdout = '';
$this->stderr = '';
$callback = $this->buildCallback($callback);
//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/bug.php?id=51800
/*if (defined('PHP_WINDOWS_VERSION_BUILD')) {
$this->fileHandles = array(
self::STDOUT => tmpfile(),
);
$this->readBytes = array(
self::STDOUT => 0,
);
$descriptors = array(array('pipe', 'r'), $this->fileHandles[self::STDOUT], array('pipe', 'w'));
} else {*/
$descriptors = array(array('pipe', 'r'), array('pipe', 'w'), array('pipe', 'w'));
//}
$commandline = $this->commandline;
if (defined('PHP_WINDOWS_VERSION_BUILD') && $this->enhanceWindowsCompatibility) {
$commandline = 'cmd /V:ON /E:ON /C "'.$commandline.'"';
if (!isset($this->options['bypass_shell'])) {
$this->options['bypass_shell'] = true;
}
}
$this->process = proc_open($commandline, $descriptors, $this->pipes, $this->cwd, $this->env, $this->options);
if (!is_resource($this->process)) {
throw new \RuntimeException('Unable to launch a new process.');
}
$this->status = self::STATUS_STARTED;
foreach ($this->pipes as $pipe) {
stream_set_blocking($pipe, false);
}
if (null === $this->stdin) {
fclose($this->pipes[0]);
unset($this->pipes[0]);
return;
}
$writePipes = array($this->pipes[0]);
unset($this->pipes[0]);
$stdinLen = strlen($this->stdin);
$stdinOffset = 0;
while ($writePipes) {
/*if (defined('PHP_WINDOWS_VERSION_BUILD')) {
$this->processFileHandles($callback);
}*/
$r = $this->pipes;
$w = $writePipes;
$e = null;
$n = @stream_select($r, $w, $e, $this->timeout);
if (false === $n) {
break;
}
if ($n === 0) {
proc_terminate($this->process);
throw new \RuntimeException('The process timed out.');
}
if ($w) {
$written = fwrite($writePipes[0], (binary) substr($this->stdin, $stdinOffset), 8192);
if (false !== $written) {
$stdinOffset += $written;
}
if ($stdinOffset >= $stdinLen) {
fclose($writePipes[0]);
$writePipes = null;
}
}
foreach ($r as $pipe) {
$type = array_search($pipe, $this->pipes);
$data = fread($pipe, 8192);
if (strlen($data) > 0) {
call_user_func($callback, $type == 1 ? self::OUT : self::ERR, $data);
}
if (false === $data || feof($pipe)) {
fclose($pipe);
unset($this->pipes[$type]);
}
}
}
$this->updateStatus();
}
public function wait($callback = null)
{
$this->updateStatus();
$callback = $this->buildCallback($callback);
while ($this->pipes || (defined('PHP_WINDOWS_VERSION_BUILD') && $this->fileHandles)) {
if (defined('PHP_WINDOWS_VERSION_BUILD') && $this->fileHandles) {
$this->processFileHandles($callback, !$this->pipes);
}
if ($this->pipes) {
$r = $this->pipes;
$w = null;
$e = null;
$n = @stream_select($r, $w, $e, $this->timeout);
if (false === $n) {
$this->pipes = array();
continue;
}
if (0 === $n) {
proc_terminate($this->process);
throw new \RuntimeException('The process timed out.');
}
foreach ($r as $pipe) {
$type = array_search($pipe, $this->pipes);
$data = fread($pipe, 8192);
if (strlen($data) > 0) {
call_user_func($callback, $type == 1 ? self::OUT : self::ERR, $data);
}
if (false === $data || feof($pipe)) {
fclose($pipe);
unset($this->pipes[$type]);
}
}
}
}
$this->updateStatus();
if ($this->processInformation['signaled']) {
throw new \RuntimeException(sprintf('The process stopped because of a "%s" signal.', $this->processInformation['stopsig']));
}
$time = 0;
while ($this->isRunning() && $time < 1000000) {
$time += 1000;
usleep(1000);
}
$exitcode = proc_close($this->process);
if ($this->processInformation['signaled']) {
throw new \RuntimeException(sprintf('The process stopped because of a "%s" signal.', $this->processInformation['stopsig']));
}
return $this->exitcode = $this->processInformation['running'] ? $exitcode : $this->processInformation['exitcode'];
}
public function getOutput()
{
$this->updateOutput();
return $this->stdout;
}
public function getErrorOutput()
{
$this->updateErrorOutput();
return $this->stderr;
}
public function getExitCode()
{
$this->updateStatus();
return $this->exitcode;
}
public function getExitCodeText()
{
$this->updateStatus();
return isset(self::$exitCodes[$this->exitcode]) ? self::$exitCodes[$this->exitcode] : 'Unknown error';
}
public function isSuccessful()
{
$this->updateStatus();
return 0 == $this->exitcode;
}
public function hasBeenSignaled()
{
$this->updateStatus();
return $this->processInformation['signaled'];
}
public function getTermSignal()
{
$this->updateStatus();
return $this->processInformation['termsig'];
}
public function hasBeenStopped()
{
$this->updateStatus();
return $this->processInformation['stopped'];
}
public function getStopSignal()
{
$this->updateStatus();
return $this->processInformation['stopsig'];
}
public function isRunning()
{
if (self::STATUS_STARTED !== $this->status) {
return false;
}
$this->updateStatus();
return $this->processInformation['running'];
}
public function stop($timeout=10)
{
$timeoutMicro = (int) $timeout*10E6;
if ($this->isRunning()) {
proc_terminate($this->process);
$time = 0;
while (1 == $this->isRunning() && $time < $timeoutMicro) {
$time += 1000;
usleep(1000);
}
foreach ($this->pipes as $pipe) {
fclose($pipe);
}
$this->pipes = array();
$exitcode = proc_close($this->process);
$this->exitcode = -1 === $this->processInformation['exitcode'] ? $exitcode : $this->processInformation['exitcode'];
if (defined('PHP_WINDOWS_VERSION_BUILD')) {
foreach ($this->fileHandles as $fileHandle) {
fclose($fileHandle);
}
$this->fileHandles = array();
}
}
$this->status = self::STATUS_TERMINATED;
return $this->exitcode;
}
public function addOutput($line)
{
$this->stdout .= $line;
}
public function addErrorOutput($line)
{
$this->stderr .= $line;
}
public function getCommandLine()
{
return $this->commandline;
}
public function setCommandLine($commandline)
{
$this->commandline = $commandline;
}
public function getTimeout()
{
return $this->timeout;
}
public function setTimeout($timeout)
{
if (null === $timeout) {
$this->timeout = null;
return;
}
$timeout = (integer) $timeout;
if ($timeout < 0) {
throw new \InvalidArgumentException('The timeout value must be a valid positive integer.');
}
$this->timeout = $timeout;
}
public function getWorkingDirectory()
{
return $this->cwd;
}
public function setWorkingDirectory($cwd)
{
$this->cwd = $cwd;
}
public function getEnv()
{
return $this->env;
}
public function setEnv(array $env)
{
$this->env = $env;
}
public function getStdin()
{
return $this->stdin;
}
public function setStdin($stdin)
{
$this->stdin = $stdin;
}
public function getOptions()
{
return $this->options;
}
public function setOptions(array $options)
{
$this->options = $options;
}
public function getEnhanceWindowsCompatibility()
{
return $this->enhanceWindowsCompatibility;
}
public function setEnhanceWindowsCompatibility($enhance)
{
$this->enhanceWindowsCompatibility = (Boolean) $enhance;
}
protected function buildCallback($callback)
{
$that = $this;
$out = self::OUT;
$err = self::ERR;
$callback = function ($type, $data) use ($that, $callback, $out, $err) {
if ($out == $type) {
$that->addOutput($data);
} else {
$that->addErrorOutput($data);
}
if (null !== $callback) {
call_user_func($callback, $type, $data);
}
};
return $callback;
}
protected function updateStatus()
{
if (self::STATUS_STARTED !== $this->status) {
return;
}
$this->processInformation = proc_get_status($this->process);
if (!$this->processInformation['running']) {
$this->status = self::STATUS_TERMINATED;
if (-1 !== $this->processInformation['exitcode']) {
$this->exitcode = $this->processInformation['exitcode'];
}
}
}
protected function updateErrorOutput()
{
if (isset($this->pipes[self::STDERR]) && is_resource($this->pipes[self::STDERR])) {
$this->addErrorOutput(stream_get_contents($this->pipes[self::STDERR]));
}
}
protected function updateOutput()
{
if (defined('PHP_WINDOWS_VERSION_BUILD') && isset($this->fileHandles[self::STDOUT]) && is_resource($this->fileHandles[self::STDOUT])) {
fseek($this->fileHandles[self::STDOUT], $this->readBytes[self::STDOUT]);
$this->addOutput(stream_get_contents($this->fileHandles[self::STDOUT]));
} elseif (isset($this->pipes[self::STDOUT]) && is_resource($this->pipes[self::STDOUT])) {
$this->addOutput(stream_get_contents($this->pipes[self::STDOUT]));
}
}
private function processFileHandles($callback, $closeEmptyHandles = false)
{
$fh = $this->fileHandles;
foreach ($fh as $type => $fileHandle) {
fseek($fileHandle, $this->readBytes[$type]);
$data = fread($fileHandle, 8192);
if (strlen($data) > 0) {
$this->readBytes[$type] += strlen($data);
call_user_func($callback, $type == 1 ? self::OUT : self::ERR, $data);
}
if (false === $data || ($closeEmptyHandles && '' === $data && feof($fileHandle))) {
fclose($fileHandle);
unset($this->fileHandles[$type]);
}
}
}
}
