/vendor/symfony/process/Process.php |
@@ -0,0 +1,1732 @@ |
<?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; |
use Symfony\Component\Process\Exception\ProcessFailedException; |
use Symfony\Component\Process\Exception\ProcessTimedOutException; |
use Symfony\Component\Process\Exception\RuntimeException; |
use Symfony\Component\Process\Pipes\PipesInterface; |
use Symfony\Component\Process\Pipes\UnixPipes; |
use Symfony\Component\Process\Pipes\WindowsPipes; |
|
/** |
* Process is a thin wrapper around proc_* functions to easily |
* start independent PHP processes. |
* |
* @author Fabien Potencier <fabien@symfony.com> |
* @author Romain Neutron <imprec@gmail.com> |
*/ |
class Process implements \IteratorAggregate |
{ |
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; |
|
// Timeout Precision in seconds. |
const TIMEOUT_PRECISION = 0.2; |
|
const ITER_NON_BLOCKING = 1; // By default, iterating over outputs is a blocking call, use this flag to make it non-blocking |
const ITER_KEEP_OUTPUT = 2; // By default, outputs are cleared while iterating, use this flag to keep them in memory |
const ITER_SKIP_OUT = 4; // Use this flag to skip STDOUT while iterating |
const ITER_SKIP_ERR = 8; // Use this flag to skip STDERR while iterating |
|
private $callback; |
private $hasCallback = false; |
private $commandline; |
private $cwd; |
private $env; |
private $input; |
private $starttime; |
private $lastOutputTime; |
private $timeout; |
private $idleTimeout; |
private $options = array('suppress_errors' => true); |
private $exitcode; |
private $fallbackStatus = array(); |
private $processInformation; |
private $outputDisabled = false; |
private $stdout; |
private $stderr; |
private $enhanceWindowsCompatibility = true; |
private $enhanceSigchildCompatibility; |
private $process; |
private $status = self::STATUS_READY; |
private $incrementalOutputOffset = 0; |
private $incrementalErrorOutputOffset = 0; |
private $tty; |
private $pty; |
private $inheritEnv = false; |
|
private $useFileHandles = false; |
/** @var PipesInterface */ |
private $processPipes; |
|
private $latestSignal; |
|
private static $sigchild; |
|
/** |
* Exit codes translation table. |
* |
* User-defined errors must use exit codes in the 64-113 range. |
* |
* @var array |
*/ |
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', |
); |
|
/** |
* Constructor. |
* |
* @param string|array $commandline The command line to run |
* @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 mixed|null $input The input as stream resource, scalar or \Traversable, or null for no input |
* @param int|float|null $timeout The timeout in seconds or null to disable |
* @param array $options An array of options for proc_open |
* |
* @throws RuntimeException When proc_open is not installed |
*/ |
public function __construct($commandline, $cwd = null, array $env = null, $input = null, $timeout = 60, array $options = null) |
{ |
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 = $cwd; |
|
// on Windows, if the cwd changed via chdir(), proc_open defaults to the dir where PHP was started |
// on Gnu/Linux, PHP builds with --enable-maintainer-zts are also affected |
// @see : https://bugs.php.net/bug.php?id=51800 |
// @see : https://bugs.php.net/bug.php?id=50524 |
if (null === $this->cwd && (defined('ZEND_THREAD_SAFE') || '\\' === DIRECTORY_SEPARATOR)) { |
$this->cwd = getcwd(); |
} |
if (null !== $env) { |
$this->setEnv($env); |
} |
|
$this->setInput($input); |
$this->setTimeout($timeout); |
$this->useFileHandles = '\\' === DIRECTORY_SEPARATOR; |
$this->pty = false; |
$this->enhanceSigchildCompatibility = '\\' !== DIRECTORY_SEPARATOR && $this->isSigchildEnabled(); |
if (null !== $options) { |
@trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since version 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED); |
$this->options = array_replace($this->options, $options); |
} |
} |
|
public function __destruct() |
{ |
$this->stop(0); |
} |
|
public function __clone() |
{ |
$this->resetProcessData(); |
} |
|
/** |
* Runs the process. |
* |
* The callback receives the type of output (out or err) and |
* some bytes from the output in real-time. It allows to have feedback |
* from the independent process during execution. |
* |
* The STDOUT and STDERR are also available after the process is finished |
* via the getOutput() and getErrorOutput() methods. |
* |
* @param callable|null $callback A PHP callback to run whenever there is some |
* output available on STDOUT or STDERR |
* @param array $env An array of additional env vars to set when running the process |
* |
* @return int The exit status code |
* |
* @throws RuntimeException When process can't be launched |
* @throws RuntimeException When process stopped after receiving signal |
* @throws LogicException In case a callback is provided and output has been disabled |
* |
* @final since version 3.3 |
*/ |
public function run($callback = null/*, array $env = array()*/) |
{ |
$env = 1 < func_num_args() ? func_get_arg(1) : null; |
$this->start($callback, $env); |
|
return $this->wait(); |
} |
|
/** |
* Runs the process. |
* |
* This is identical to run() except that an exception is thrown if the process |
* exits with a non-zero exit code. |
* |
* @param callable|null $callback |
* @param array $env An array of additional env vars to set when running the process |
* |
* @return self |
* |
* @throws RuntimeException if PHP was compiled with --enable-sigchild and the enhanced sigchild compatibility mode is not enabled |
* @throws ProcessFailedException if the process didn't terminate successfully |
* |
* @final since version 3.3 |
*/ |
public function mustRun(callable $callback = null/*, array $env = array()*/) |
{ |
if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.'); |
} |
$env = 1 < func_num_args() ? func_get_arg(1) : null; |
|
if (0 !== $this->run($callback, $env)) { |
throw new ProcessFailedException($this); |
} |
|
return $this; |
} |
|
/** |
* Starts the process and returns after writing the input to STDIN. |
* |
* This method blocks until all STDIN data is sent to the process then it |
* returns while the process runs in the background. |
* |
* The termination of the process can be awaited with wait(). |
* |
* The callback receives the type of output (out or err) and some bytes from |
* the output in real-time while writing the standard input to the process. |
* It allows to have feedback from the independent process during execution. |
* |
* @param callable|null $callback A PHP callback to run whenever there is some |
* output available on STDOUT or STDERR |
* @param array $env An array of additional env vars to set when running the process |
* |
* @throws RuntimeException When process can't be launched |
* @throws RuntimeException When process is already running |
* @throws LogicException In case a callback is provided and output has been disabled |
*/ |
public function start(callable $callback = null/*, array $env = array()*/) |
{ |
if ($this->isRunning()) { |
throw new RuntimeException('Process is already running'); |
} |
if (2 <= func_num_args()) { |
$env = func_get_arg(1); |
} else { |
if (__CLASS__ !== static::class) { |
$r = new \ReflectionMethod($this, __FUNCTION__); |
if (__CLASS__ !== $r->getDeclaringClass()->getName() && (2 > $r->getNumberOfParameters() || 'env' !== $r->getParameters()[0]->name)) { |
@trigger_error(sprintf('The %s::start() method expects a second "$env" argument since version 3.3. It will be made mandatory in 4.0.', static::class), E_USER_DEPRECATED); |
} |
} |
$env = null; |
} |
|
$this->resetProcessData(); |
$this->starttime = $this->lastOutputTime = microtime(true); |
$this->callback = $this->buildCallback($callback); |
$this->hasCallback = null !== $callback; |
$descriptors = $this->getDescriptors(); |
$inheritEnv = $this->inheritEnv; |
|
if (is_array($commandline = $this->commandline)) { |
$commandline = implode(' ', array_map(array($this, 'escapeArgument'), $commandline)); |
|
if ('\\' !== DIRECTORY_SEPARATOR) { |
// exec is mandatory to deal with sending a signal to the process |
$commandline = 'exec '.$commandline; |
} |
} |
|
if (null === $env) { |
$env = $this->env; |
} else { |
if ($this->env) { |
$env += $this->env; |
} |
$inheritEnv = true; |
} |
|
$envBackup = array(); |
if (null !== $env && $inheritEnv) { |
foreach ($env as $k => $v) { |
$envBackup[$k] = getenv($k); |
putenv(false === $v || null === $v ? $k : "$k=$v"); |
} |
$env = null; |
} elseif (null !== $env) { |
@trigger_error('Not inheriting environment variables is deprecated since Symfony 3.3 and will always happen in 4.0. Set "Process::inheritEnvironmentVariables()" to true instead.', E_USER_DEPRECATED); |
} |
if ('\\' === DIRECTORY_SEPARATOR && $this->enhanceWindowsCompatibility) { |
$this->options['bypass_shell'] = true; |
$commandline = $this->prepareWindowsCommandLine($commandline, $envBackup, $env); |
} elseif (!$this->useFileHandles && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
// last exit code is output on the fourth pipe and caught to work around --enable-sigchild |
$descriptors[3] = array('pipe', 'w'); |
|
// See https://unix.stackexchange.com/questions/71205/background-process-pipe-input |
$commandline = '{ ('.$commandline.') <&3 3<&- 3>/dev/null & } 3<&0;'; |
$commandline .= 'pid=$!; echo $pid >&3; wait $pid; code=$?; echo $code >&3; exit $code'; |
|
// Workaround for the bug, when PTS functionality is enabled. |
// @see : https://bugs.php.net/69442 |
$ptsWorkaround = fopen(__FILE__, 'r'); |
} |
|
$this->process = proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $env, $this->options); |
|
foreach ($envBackup as $k => $v) { |
putenv(false === $v ? $k : "$k=$v"); |
} |
|
if (!is_resource($this->process)) { |
throw new RuntimeException('Unable to launch a new process.'); |
} |
$this->status = self::STATUS_STARTED; |
|
if (isset($descriptors[3])) { |
$this->fallbackStatus['pid'] = (int) fgets($this->processPipes->pipes[3]); |
} |
|
if ($this->tty) { |
return; |
} |
|
$this->updateStatus(false); |
$this->checkTimeout(); |
} |
|
/** |
* Restarts the process. |
* |
* Be warned that the process is cloned before being started. |
* |
* @param callable|null $callback A PHP callback to run whenever there is some |
* output available on STDOUT or STDERR |
* @param array $env An array of additional env vars to set when running the process |
* |
* @return $this |
* |
* @throws RuntimeException When process can't be launched |
* @throws RuntimeException When process is already running |
* |
* @see start() |
* |
* @final since version 3.3 |
*/ |
public function restart(callable $callback = null/*, array $env = array()*/) |
{ |
if ($this->isRunning()) { |
throw new RuntimeException('Process is already running'); |
} |
$env = 1 < func_num_args() ? func_get_arg(1) : null; |
|
$process = clone $this; |
$process->start($callback, $env); |
|
return $process; |
} |
|
/** |
* Waits for the process to terminate. |
* |
* The callback receives the type of output (out or err) and some bytes |
* from the output in real-time while writing the standard input to the process. |
* It allows to have feedback from the independent process during execution. |
* |
* @param callable|null $callback A valid PHP callback |
* |
* @return int The exitcode of the process |
* |
* @throws RuntimeException When process timed out |
* @throws RuntimeException When process stopped after receiving signal |
* @throws LogicException When process is not yet started |
*/ |
public function wait(callable $callback = null) |
{ |
$this->requireProcessIsStarted(__FUNCTION__); |
|
$this->updateStatus(false); |
|
if (null !== $callback) { |
if (!$this->processPipes->haveReadSupport()) { |
$this->stop(0); |
throw new \LogicException('Pass the callback to the Process::start method or enableOutput to use a callback with Process::wait'); |
} |
$this->callback = $this->buildCallback($callback); |
} |
|
do { |
$this->checkTimeout(); |
$running = '\\' === DIRECTORY_SEPARATOR ? $this->isRunning() : $this->processPipes->areOpen(); |
$this->readPipes($running, '\\' !== DIRECTORY_SEPARATOR || !$running); |
} while ($running); |
|
while ($this->isRunning()) { |
usleep(1000); |
} |
|
if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) { |
throw new RuntimeException(sprintf('The process has been signaled with signal "%s".', $this->processInformation['termsig'])); |
} |
|
return $this->exitcode; |
} |
|
/** |
* Returns the Pid (process identifier), if applicable. |
* |
* @return int|null The process id if running, null otherwise |
*/ |
public function getPid() |
{ |
return $this->isRunning() ? $this->processInformation['pid'] : null; |
} |
|
/** |
* Sends a POSIX signal to the process. |
* |
* @param int $signal A valid POSIX signal (see http://www.php.net/manual/en/pcntl.constants.php) |
* |
* @return $this |
* |
* @throws LogicException In case the process is not running |
* @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed |
* @throws RuntimeException In case of failure |
*/ |
public function signal($signal) |
{ |
$this->doSignal($signal, true); |
|
return $this; |
} |
|
/** |
* Disables fetching output and error output from the underlying process. |
* |
* @return $this |
* |
* @throws RuntimeException In case the process is already running |
* @throws LogicException if an idle timeout is set |
*/ |
public function disableOutput() |
{ |
if ($this->isRunning()) { |
throw new RuntimeException('Disabling output while the process is running is not possible.'); |
} |
if (null !== $this->idleTimeout) { |
throw new LogicException('Output can not be disabled while an idle timeout is set.'); |
} |
|
$this->outputDisabled = true; |
|
return $this; |
} |
|
/** |
* Enables fetching output and error output from the underlying process. |
* |
* @return $this |
* |
* @throws RuntimeException In case the process is already running |
*/ |
public function enableOutput() |
{ |
if ($this->isRunning()) { |
throw new RuntimeException('Enabling output while the process is running is not possible.'); |
} |
|
$this->outputDisabled = false; |
|
return $this; |
} |
|
/** |
* Returns true in case the output is disabled, false otherwise. |
* |
* @return bool |
*/ |
public function isOutputDisabled() |
{ |
return $this->outputDisabled; |
} |
|
/** |
* Returns the current output of the process (STDOUT). |
* |
* @return string The process output |
* |
* @throws LogicException in case the output has been disabled |
* @throws LogicException In case the process is not started |
*/ |
public function getOutput() |
{ |
$this->readPipesForOutput(__FUNCTION__); |
|
if (false === $ret = stream_get_contents($this->stdout, -1, 0)) { |
return ''; |
} |
|
return $ret; |
} |
|
/** |
* Returns the output incrementally. |
* |
* In comparison with the getOutput method which always return the whole |
* output, this one returns the new output since the last call. |
* |
* @return string The process output since the last call |
* |
* @throws LogicException in case the output has been disabled |
* @throws LogicException In case the process is not started |
*/ |
public function getIncrementalOutput() |
{ |
$this->readPipesForOutput(__FUNCTION__); |
|
$latest = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset); |
$this->incrementalOutputOffset = ftell($this->stdout); |
|
if (false === $latest) { |
return ''; |
} |
|
return $latest; |
} |
|
/** |
* Returns an iterator to the output of the process, with the output type as keys (Process::OUT/ERR). |
* |
* @param int $flags A bit field of Process::ITER_* flags |
* |
* @throws LogicException in case the output has been disabled |
* @throws LogicException In case the process is not started |
* |
* @return \Generator |
*/ |
public function getIterator($flags = 0) |
{ |
$this->readPipesForOutput(__FUNCTION__, false); |
|
$clearOutput = !(self::ITER_KEEP_OUTPUT & $flags); |
$blocking = !(self::ITER_NON_BLOCKING & $flags); |
$yieldOut = !(self::ITER_SKIP_OUT & $flags); |
$yieldErr = !(self::ITER_SKIP_ERR & $flags); |
|
while (null !== $this->callback || ($yieldOut && !feof($this->stdout)) || ($yieldErr && !feof($this->stderr))) { |
if ($yieldOut) { |
$out = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset); |
|
if (isset($out[0])) { |
if ($clearOutput) { |
$this->clearOutput(); |
} else { |
$this->incrementalOutputOffset = ftell($this->stdout); |
} |
|
yield self::OUT => $out; |
} |
} |
|
if ($yieldErr) { |
$err = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset); |
|
if (isset($err[0])) { |
if ($clearOutput) { |
$this->clearErrorOutput(); |
} else { |
$this->incrementalErrorOutputOffset = ftell($this->stderr); |
} |
|
yield self::ERR => $err; |
} |
} |
|
if (!$blocking && !isset($out[0]) && !isset($err[0])) { |
yield self::OUT => ''; |
} |
|
$this->checkTimeout(); |
$this->readPipesForOutput(__FUNCTION__, $blocking); |
} |
} |
|
/** |
* Clears the process output. |
* |
* @return $this |
*/ |
public function clearOutput() |
{ |
ftruncate($this->stdout, 0); |
fseek($this->stdout, 0); |
$this->incrementalOutputOffset = 0; |
|
return $this; |
} |
|
/** |
* Returns the current error output of the process (STDERR). |
* |
* @return string The process error output |
* |
* @throws LogicException in case the output has been disabled |
* @throws LogicException In case the process is not started |
*/ |
public function getErrorOutput() |
{ |
$this->readPipesForOutput(__FUNCTION__); |
|
if (false === $ret = stream_get_contents($this->stderr, -1, 0)) { |
return ''; |
} |
|
return $ret; |
} |
|
/** |
* Returns the errorOutput incrementally. |
* |
* In comparison with the getErrorOutput method which always return the |
* whole error output, this one returns the new error output since the last |
* call. |
* |
* @return string The process error output since the last call |
* |
* @throws LogicException in case the output has been disabled |
* @throws LogicException In case the process is not started |
*/ |
public function getIncrementalErrorOutput() |
{ |
$this->readPipesForOutput(__FUNCTION__); |
|
$latest = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset); |
$this->incrementalErrorOutputOffset = ftell($this->stderr); |
|
if (false === $latest) { |
return ''; |
} |
|
return $latest; |
} |
|
/** |
* Clears the process output. |
* |
* @return $this |
*/ |
public function clearErrorOutput() |
{ |
ftruncate($this->stderr, 0); |
fseek($this->stderr, 0); |
$this->incrementalErrorOutputOffset = 0; |
|
return $this; |
} |
|
/** |
* Returns the exit code returned by the process. |
* |
* @return null|int The exit status code, null if the Process is not terminated |
* |
* @throws RuntimeException In case --enable-sigchild is activated and the sigchild compatibility mode is disabled |
*/ |
public function getExitCode() |
{ |
if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.'); |
} |
|
$this->updateStatus(false); |
|
return $this->exitcode; |
} |
|
/** |
* Returns a string representation for the exit code returned by the process. |
* |
* This method relies on the Unix exit code status standardization |
* and might not be relevant for other operating systems. |
* |
* @return null|string A string representation for the exit status code, null if the Process is not terminated |
* |
* @see http://tldp.org/LDP/abs/html/exitcodes.html |
* @see http://en.wikipedia.org/wiki/Unix_signal |
*/ |
public function getExitCodeText() |
{ |
if (null === $exitcode = $this->getExitCode()) { |
return; |
} |
|
return isset(self::$exitCodes[$exitcode]) ? self::$exitCodes[$exitcode] : 'Unknown error'; |
} |
|
/** |
* Checks if the process ended successfully. |
* |
* @return bool true if the process ended successfully, false otherwise |
*/ |
public function isSuccessful() |
{ |
return 0 === $this->getExitCode(); |
} |
|
/** |
* Returns true if the child process has been terminated by an uncaught signal. |
* |
* It always returns false on Windows. |
* |
* @return bool |
* |
* @throws RuntimeException In case --enable-sigchild is activated |
* @throws LogicException In case the process is not terminated |
*/ |
public function hasBeenSignaled() |
{ |
$this->requireProcessIsTerminated(__FUNCTION__); |
|
if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.'); |
} |
|
return $this->processInformation['signaled']; |
} |
|
/** |
* Returns the number of the signal that caused the child process to terminate its execution. |
* |
* It is only meaningful if hasBeenSignaled() returns true. |
* |
* @return int |
* |
* @throws RuntimeException In case --enable-sigchild is activated |
* @throws LogicException In case the process is not terminated |
*/ |
public function getTermSignal() |
{ |
$this->requireProcessIsTerminated(__FUNCTION__); |
|
if ($this->isSigchildEnabled() && (!$this->enhanceSigchildCompatibility || -1 === $this->processInformation['termsig'])) { |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.'); |
} |
|
return $this->processInformation['termsig']; |
} |
|
/** |
* Returns true if the child process has been stopped by a signal. |
* |
* It always returns false on Windows. |
* |
* @return bool |
* |
* @throws LogicException In case the process is not terminated |
*/ |
public function hasBeenStopped() |
{ |
$this->requireProcessIsTerminated(__FUNCTION__); |
|
return $this->processInformation['stopped']; |
} |
|
/** |
* Returns the number of the signal that caused the child process to stop its execution. |
* |
* It is only meaningful if hasBeenStopped() returns true. |
* |
* @return int |
* |
* @throws LogicException In case the process is not terminated |
*/ |
public function getStopSignal() |
{ |
$this->requireProcessIsTerminated(__FUNCTION__); |
|
return $this->processInformation['stopsig']; |
} |
|
/** |
* Checks if the process is currently running. |
* |
* @return bool true if the process is currently running, false otherwise |
*/ |
public function isRunning() |
{ |
if (self::STATUS_STARTED !== $this->status) { |
return false; |
} |
|
$this->updateStatus(false); |
|
return $this->processInformation['running']; |
} |
|
/** |
* Checks if the process has been started with no regard to the current state. |
* |
* @return bool true if status is ready, false otherwise |
*/ |
public function isStarted() |
{ |
return $this->status != self::STATUS_READY; |
} |
|
/** |
* Checks if the process is terminated. |
* |
* @return bool true if process is terminated, false otherwise |
*/ |
public function isTerminated() |
{ |
$this->updateStatus(false); |
|
return $this->status == self::STATUS_TERMINATED; |
} |
|
/** |
* Gets the process status. |
* |
* The status is one of: ready, started, terminated. |
* |
* @return string The current process status |
*/ |
public function getStatus() |
{ |
$this->updateStatus(false); |
|
return $this->status; |
} |
|
/** |
* Stops the process. |
* |
* @param int|float $timeout The timeout in seconds |
* @param int $signal A POSIX signal to send in case the process has not stop at timeout, default is SIGKILL (9) |
* |
* @return int The exit-code of the process |
*/ |
public function stop($timeout = 10, $signal = null) |
{ |
$timeoutMicro = microtime(true) + $timeout; |
if ($this->isRunning()) { |
// given `SIGTERM` may not be defined and that `proc_terminate` uses the constant value and not the constant itself, we use the same here |
$this->doSignal(15, false); |
do { |
usleep(1000); |
} while ($this->isRunning() && microtime(true) < $timeoutMicro); |
|
if ($this->isRunning()) { |
// Avoid exception here: process is supposed to be running, but it might have stopped just |
// after this line. In any case, let's silently discard the error, we cannot do anything. |
$this->doSignal($signal ?: 9, false); |
} |
} |
|
if ($this->isRunning()) { |
if (isset($this->fallbackStatus['pid'])) { |
unset($this->fallbackStatus['pid']); |
|
return $this->stop(0, $signal); |
} |
$this->close(); |
} |
|
return $this->exitcode; |
} |
|
/** |
* Adds a line to the STDOUT stream. |
* |
* @internal |
* |
* @param string $line The line to append |
*/ |
public function addOutput($line) |
{ |
$this->lastOutputTime = microtime(true); |
|
fseek($this->stdout, 0, SEEK_END); |
fwrite($this->stdout, $line); |
fseek($this->stdout, $this->incrementalOutputOffset); |
} |
|
/** |
* Adds a line to the STDERR stream. |
* |
* @internal |
* |
* @param string $line The line to append |
*/ |
public function addErrorOutput($line) |
{ |
$this->lastOutputTime = microtime(true); |
|
fseek($this->stderr, 0, SEEK_END); |
fwrite($this->stderr, $line); |
fseek($this->stderr, $this->incrementalErrorOutputOffset); |
} |
|
/** |
* Gets the command line to be executed. |
* |
* @return string The command to execute |
*/ |
public function getCommandLine() |
{ |
return is_array($this->commandline) ? implode(' ', array_map(array($this, 'escapeArgument'), $this->commandline)) : $this->commandline; |
} |
|
/** |
* Sets the command line to be executed. |
* |
* @param string|array $commandline The command to execute |
* |
* @return self The current Process instance |
*/ |
public function setCommandLine($commandline) |
{ |
$this->commandline = $commandline; |
|
return $this; |
} |
|
/** |
* Gets the process timeout (max. runtime). |
* |
* @return float|null The timeout in seconds or null if it's disabled |
*/ |
public function getTimeout() |
{ |
return $this->timeout; |
} |
|
/** |
* Gets the process idle timeout (max. time since last output). |
* |
* @return float|null The timeout in seconds or null if it's disabled |
*/ |
public function getIdleTimeout() |
{ |
return $this->idleTimeout; |
} |
|
/** |
* Sets the process timeout (max. runtime). |
* |
* To disable the timeout, set this value to null. |
* |
* @param int|float|null $timeout The timeout in seconds |
* |
* @return self The current Process instance |
* |
* @throws InvalidArgumentException if the timeout is negative |
*/ |
public function setTimeout($timeout) |
{ |
$this->timeout = $this->validateTimeout($timeout); |
|
return $this; |
} |
|
/** |
* Sets the process idle timeout (max. time since last output). |
* |
* To disable the timeout, set this value to null. |
* |
* @param int|float|null $timeout The timeout in seconds |
* |
* @return self The current Process instance |
* |
* @throws LogicException if the output is disabled |
* @throws InvalidArgumentException if the timeout is negative |
*/ |
public function setIdleTimeout($timeout) |
{ |
if (null !== $timeout && $this->outputDisabled) { |
throw new LogicException('Idle timeout can not be set while the output is disabled.'); |
} |
|
$this->idleTimeout = $this->validateTimeout($timeout); |
|
return $this; |
} |
|
/** |
* Enables or disables the TTY mode. |
* |
* @param bool $tty True to enabled and false to disable |
* |
* @return self The current Process instance |
* |
* @throws RuntimeException In case the TTY mode is not supported |
*/ |
public function setTty($tty) |
{ |
if ('\\' === DIRECTORY_SEPARATOR && $tty) { |
throw new RuntimeException('TTY mode is not supported on Windows platform.'); |
} |
if ($tty) { |
static $isTtySupported; |
|
if (null === $isTtySupported) { |
$isTtySupported = (bool) @proc_open('echo 1 >/dev/null', array(array('file', '/dev/tty', 'r'), array('file', '/dev/tty', 'w'), array('file', '/dev/tty', 'w')), $pipes); |
} |
|
if (!$isTtySupported) { |
throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.'); |
} |
} |
|
$this->tty = (bool) $tty; |
|
return $this; |
} |
|
/** |
* Checks if the TTY mode is enabled. |
* |
* @return bool true if the TTY mode is enabled, false otherwise |
*/ |
public function isTty() |
{ |
return $this->tty; |
} |
|
/** |
* Sets PTY mode. |
* |
* @param bool $bool |
* |
* @return self |
*/ |
public function setPty($bool) |
{ |
$this->pty = (bool) $bool; |
|
return $this; |
} |
|
/** |
* Returns PTY state. |
* |
* @return bool |
*/ |
public function isPty() |
{ |
return $this->pty; |
} |
|
/** |
* Gets the working directory. |
* |
* @return string|null The current working directory or null on failure |
*/ |
public function getWorkingDirectory() |
{ |
if (null === $this->cwd) { |
// getcwd() will return false if any one of the parent directories does not have |
// the readable or search mode set, even if the current directory does |
return getcwd() ?: null; |
} |
|
return $this->cwd; |
} |
|
/** |
* Sets the current working directory. |
* |
* @param string $cwd The new working directory |
* |
* @return self The current Process instance |
*/ |
public function setWorkingDirectory($cwd) |
{ |
$this->cwd = $cwd; |
|
return $this; |
} |
|
/** |
* Gets the environment variables. |
* |
* @return array The current environment variables |
*/ |
public function getEnv() |
{ |
return $this->env; |
} |
|
/** |
* Sets the environment variables. |
* |
* An environment variable value should be a string. |
* If it is an array, the variable is ignored. |
* If it is false or null, it will be removed when |
* env vars are otherwise inherited. |
* |
* That happens in PHP when 'argv' is registered into |
* the $_ENV array for instance. |
* |
* @param array $env The new environment variables |
* |
* @return self The current Process instance |
*/ |
public function setEnv(array $env) |
{ |
// Process can not handle env values that are arrays |
$env = array_filter($env, function ($value) { |
return !is_array($value); |
}); |
|
$this->env = $env; |
|
return $this; |
} |
|
/** |
* Gets the Process input. |
* |
* @return resource|string|\Iterator|null The Process input |
*/ |
public function getInput() |
{ |
return $this->input; |
} |
|
/** |
* Sets the input. |
* |
* This content will be passed to the underlying process standard input. |
* |
* @param resource|scalar|\Traversable|null $input The content |
* |
* @return self The current Process instance |
* |
* @throws LogicException In case the process is running |
*/ |
public function setInput($input) |
{ |
if ($this->isRunning()) { |
throw new LogicException('Input can not be set while the process is running.'); |
} |
|
$this->input = ProcessUtils::validateInput(__METHOD__, $input); |
|
return $this; |
} |
|
/** |
* Gets the options for proc_open. |
* |
* @return array The current options |
* |
* @deprecated since version 3.3, to be removed in 4.0. |
*/ |
public function getOptions() |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED); |
|
return $this->options; |
} |
|
/** |
* Sets the options for proc_open. |
* |
* @param array $options The new options |
* |
* @return self The current Process instance |
* |
* @deprecated since version 3.3, to be removed in 4.0. |
*/ |
public function setOptions(array $options) |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED); |
|
$this->options = $options; |
|
return $this; |
} |
|
/** |
* Gets whether or not Windows compatibility is enabled. |
* |
* This is true by default. |
* |
* @return bool |
* |
* @deprecated since version 3.3, to be removed in 4.0. Enhanced Windows compatibility will always be enabled. |
*/ |
public function getEnhanceWindowsCompatibility() |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED); |
|
return $this->enhanceWindowsCompatibility; |
} |
|
/** |
* Sets whether or not Windows compatibility is enabled. |
* |
* @param bool $enhance |
* |
* @return self The current Process instance |
* |
* @deprecated since version 3.3, to be removed in 4.0. Enhanced Windows compatibility will always be enabled. |
*/ |
public function setEnhanceWindowsCompatibility($enhance) |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED); |
|
$this->enhanceWindowsCompatibility = (bool) $enhance; |
|
return $this; |
} |
|
/** |
* Returns whether sigchild compatibility mode is activated or not. |
* |
* @return bool |
* |
* @deprecated since version 3.3, to be removed in 4.0. Sigchild compatibility will always be enabled. |
*/ |
public function getEnhanceSigchildCompatibility() |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED); |
|
return $this->enhanceSigchildCompatibility; |
} |
|
/** |
* Activates sigchild compatibility mode. |
* |
* Sigchild compatibility mode is required to get the exit code and |
* determine the success of a process when PHP has been compiled with |
* the --enable-sigchild option |
* |
* @param bool $enhance |
* |
* @return self The current Process instance |
* |
* @deprecated since version 3.3, to be removed in 4.0. |
*/ |
public function setEnhanceSigchildCompatibility($enhance) |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED); |
|
$this->enhanceSigchildCompatibility = (bool) $enhance; |
|
return $this; |
} |
|
/** |
* Sets whether environment variables will be inherited or not. |
* |
* @param bool $inheritEnv |
* |
* @return self The current Process instance |
*/ |
public function inheritEnvironmentVariables($inheritEnv = true) |
{ |
if (!$inheritEnv) { |
@trigger_error('Not inheriting environment variables is deprecated since Symfony 3.3 and will always happen in 4.0. Set "Process::inheritEnvironmentVariables()" to true instead.', E_USER_DEPRECATED); |
} |
|
$this->inheritEnv = (bool) $inheritEnv; |
|
return $this; |
} |
|
/** |
* Returns whether environment variables will be inherited or not. |
* |
* @return bool |
* |
* @deprecated since version 3.3, to be removed in 4.0. Environment variables will always be inherited. |
*/ |
public function areEnvironmentVariablesInherited() |
{ |
@trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Environment variables will always be inherited.', __METHOD__), E_USER_DEPRECATED); |
|
return $this->inheritEnv; |
} |
|
/** |
* Performs a check between the timeout definition and the time the process started. |
* |
* In case you run a background process (with the start method), you should |
* trigger this method regularly to ensure the process timeout |
* |
* @throws ProcessTimedOutException In case the timeout was reached |
*/ |
public function checkTimeout() |
{ |
if ($this->status !== self::STATUS_STARTED) { |
return; |
} |
|
if (null !== $this->timeout && $this->timeout < microtime(true) - $this->starttime) { |
$this->stop(0); |
|
throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_GENERAL); |
} |
|
if (null !== $this->idleTimeout && $this->idleTimeout < microtime(true) - $this->lastOutputTime) { |
$this->stop(0); |
|
throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_IDLE); |
} |
} |
|
/** |
* Returns whether PTY is supported on the current operating system. |
* |
* @return bool |
*/ |
public static function isPtySupported() |
{ |
static $result; |
|
if (null !== $result) { |
return $result; |
} |
|
if ('\\' === DIRECTORY_SEPARATOR) { |
return $result = false; |
} |
|
return $result = (bool) @proc_open('echo 1 >/dev/null', array(array('pty'), array('pty'), array('pty')), $pipes); |
} |
|
/** |
* Creates the descriptors needed by the proc_open. |
* |
* @return array |
*/ |
private function getDescriptors() |
{ |
if ($this->input instanceof \Iterator) { |
$this->input->rewind(); |
} |
if ('\\' === DIRECTORY_SEPARATOR) { |
$this->processPipes = new WindowsPipes($this->input, !$this->outputDisabled || $this->hasCallback); |
} else { |
$this->processPipes = new UnixPipes($this->isTty(), $this->isPty(), $this->input, !$this->outputDisabled || $this->hasCallback); |
} |
|
return $this->processPipes->getDescriptors(); |
} |
|
/** |
* Builds up the callback used by wait(). |
* |
* The callbacks adds all occurred output to the specific buffer and calls |
* the user callback (if present) with the received output. |
* |
* @param callable|null $callback The user defined PHP callback |
* |
* @return \Closure A PHP closure |
*/ |
protected function buildCallback(callable $callback = null) |
{ |
if ($this->outputDisabled) { |
return function ($type, $data) use ($callback) { |
if (null !== $callback) { |
call_user_func($callback, $type, $data); |
} |
}; |
} |
|
$out = self::OUT; |
|
return function ($type, $data) use ($callback, $out) { |
if ($out == $type) { |
$this->addOutput($data); |
} else { |
$this->addErrorOutput($data); |
} |
|
if (null !== $callback) { |
call_user_func($callback, $type, $data); |
} |
}; |
} |
|
/** |
* Updates the status of the process, reads pipes. |
* |
* @param bool $blocking Whether to use a blocking read call |
*/ |
protected function updateStatus($blocking) |
{ |
if (self::STATUS_STARTED !== $this->status) { |
return; |
} |
|
$this->processInformation = proc_get_status($this->process); |
$running = $this->processInformation['running']; |
|
$this->readPipes($running && $blocking, '\\' !== DIRECTORY_SEPARATOR || !$running); |
|
if ($this->fallbackStatus && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
$this->processInformation = $this->fallbackStatus + $this->processInformation; |
} |
|
if (!$running) { |
$this->close(); |
} |
} |
|
/** |
* Returns whether PHP has been compiled with the '--enable-sigchild' option or not. |
* |
* @return bool |
*/ |
protected function isSigchildEnabled() |
{ |
if (null !== self::$sigchild) { |
return self::$sigchild; |
} |
|
if (!function_exists('phpinfo') || defined('HHVM_VERSION')) { |
return self::$sigchild = false; |
} |
|
ob_start(); |
phpinfo(INFO_GENERAL); |
|
return self::$sigchild = false !== strpos(ob_get_clean(), '--enable-sigchild'); |
} |
|
/** |
* Reads pipes for the freshest output. |
* |
* @param string $caller The name of the method that needs fresh outputs |
* @param bool $blocking Whether to use blocking calls or not |
* |
* @throws LogicException in case output has been disabled or process is not started |
*/ |
private function readPipesForOutput($caller, $blocking = false) |
{ |
if ($this->outputDisabled) { |
throw new LogicException('Output has been disabled.'); |
} |
|
$this->requireProcessIsStarted($caller); |
|
$this->updateStatus($blocking); |
} |
|
/** |
* Validates and returns the filtered timeout. |
* |
* @param int|float|null $timeout |
* |
* @return float|null |
* |
* @throws InvalidArgumentException if the given timeout is a negative number |
*/ |
private function validateTimeout($timeout) |
{ |
$timeout = (float) $timeout; |
|
if (0.0 === $timeout) { |
$timeout = null; |
} elseif ($timeout < 0) { |
throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.'); |
} |
|
return $timeout; |
} |
|
/** |
* Reads pipes, executes callback. |
* |
* @param bool $blocking Whether to use blocking calls or not |
* @param bool $close Whether to close file handles or not |
*/ |
private function readPipes($blocking, $close) |
{ |
$result = $this->processPipes->readAndWrite($blocking, $close); |
|
$callback = $this->callback; |
foreach ($result as $type => $data) { |
if (3 !== $type) { |
$callback($type === self::STDOUT ? self::OUT : self::ERR, $data); |
} elseif (!isset($this->fallbackStatus['signaled'])) { |
$this->fallbackStatus['exitcode'] = (int) $data; |
} |
} |
} |
|
/** |
* Closes process resource, closes file handles, sets the exitcode. |
* |
* @return int The exitcode |
*/ |
private function close() |
{ |
$this->processPipes->close(); |
if (is_resource($this->process)) { |
proc_close($this->process); |
} |
$this->exitcode = $this->processInformation['exitcode']; |
$this->status = self::STATUS_TERMINATED; |
|
if (-1 === $this->exitcode) { |
if ($this->processInformation['signaled'] && 0 < $this->processInformation['termsig']) { |
// if process has been signaled, no exitcode but a valid termsig, apply Unix convention |
$this->exitcode = 128 + $this->processInformation['termsig']; |
} elseif ($this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
$this->processInformation['signaled'] = true; |
$this->processInformation['termsig'] = -1; |
} |
} |
|
// Free memory from self-reference callback created by buildCallback |
// Doing so in other contexts like __destruct or by garbage collector is ineffective |
// Now pipes are closed, so the callback is no longer necessary |
$this->callback = null; |
|
return $this->exitcode; |
} |
|
/** |
* Resets data related to the latest run of the process. |
*/ |
private function resetProcessData() |
{ |
$this->starttime = null; |
$this->callback = null; |
$this->exitcode = null; |
$this->fallbackStatus = array(); |
$this->processInformation = null; |
$this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'wb+'); |
$this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'wb+'); |
$this->process = null; |
$this->latestSignal = null; |
$this->status = self::STATUS_READY; |
$this->incrementalOutputOffset = 0; |
$this->incrementalErrorOutputOffset = 0; |
} |
|
/** |
* Sends a POSIX signal to the process. |
* |
* @param int $signal A valid POSIX signal (see http://www.php.net/manual/en/pcntl.constants.php) |
* @param bool $throwException Whether to throw exception in case signal failed |
* |
* @return bool True if the signal was sent successfully, false otherwise |
* |
* @throws LogicException In case the process is not running |
* @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed |
* @throws RuntimeException In case of failure |
*/ |
private function doSignal($signal, $throwException) |
{ |
if (null === $pid = $this->getPid()) { |
if ($throwException) { |
throw new LogicException('Can not send signal on a non running process.'); |
} |
|
return false; |
} |
|
if ('\\' === DIRECTORY_SEPARATOR) { |
exec(sprintf('taskkill /F /T /PID %d 2>&1', $pid), $output, $exitCode); |
if ($exitCode && $this->isRunning()) { |
if ($throwException) { |
throw new RuntimeException(sprintf('Unable to kill the process (%s).', implode(' ', $output))); |
} |
|
return false; |
} |
} else { |
if (!$this->enhanceSigchildCompatibility || !$this->isSigchildEnabled()) { |
$ok = @proc_terminate($this->process, $signal); |
} elseif (function_exists('posix_kill')) { |
$ok = @posix_kill($pid, $signal); |
} elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), array(2 => array('pipe', 'w')), $pipes)) { |
$ok = false === fgets($pipes[2]); |
} |
if (!$ok) { |
if ($throwException) { |
throw new RuntimeException(sprintf('Error while sending signal `%s`.', $signal)); |
} |
|
return false; |
} |
} |
|
$this->latestSignal = (int) $signal; |
$this->fallbackStatus['signaled'] = true; |
$this->fallbackStatus['exitcode'] = -1; |
$this->fallbackStatus['termsig'] = $this->latestSignal; |
|
return true; |
} |
|
private function prepareWindowsCommandLine($cmd, array &$envBackup, array &$env = null) |
{ |
$uid = uniqid('', true); |
$varCount = 0; |
$varCache = array(); |
$cmd = preg_replace_callback( |
'/"( |
[^"%!^]*+ |
(?: |
(?: !LF! | "(?:\^[%!^])?+" ) |
[^"%!^]*+ |
)++ |
)"/x', |
function ($m) use (&$envBackup, &$env, &$varCache, &$varCount, $uid) { |
if (isset($varCache[$m[0]])) { |
return $varCache[$m[0]]; |
} |
if (false !== strpos($value = $m[1], "\0")) { |
$value = str_replace("\0", '?', $value); |
} |
if (false === strpbrk($value, "\"%!\n")) { |
return '"'.$value.'"'; |
} |
|
$value = str_replace(array('!LF!', '"^!"', '"^%"', '"^^"', '""'), array("\n", '!', '%', '^', '"'), $value); |
$value = '"'.preg_replace('/(\\\\*)"/', '$1$1\\"', $value).'"'; |
$var = $uid.++$varCount; |
|
if (null === $env) { |
putenv("$var=$value"); |
} else { |
$env[$var] = $value; |
} |
|
$envBackup[$var] = false; |
|
return $varCache[$m[0]] = '!'.$var.'!'; |
}, |
$cmd |
); |
|
$cmd = 'cmd /V:ON /E:ON /D /C ('.str_replace("\n", ' ', $cmd).')'; |
foreach ($this->processPipes->getFiles() as $offset => $filename) { |
$cmd .= ' '.$offset.'>"'.$filename.'"'; |
} |
|
return $cmd; |
} |
|
/** |
* Ensures the process is running or terminated, throws a LogicException if the process has a not started. |
* |
* @param string $functionName The function name that was called |
* |
* @throws LogicException If the process has not run. |
*/ |
private function requireProcessIsStarted($functionName) |
{ |
if (!$this->isStarted()) { |
throw new LogicException(sprintf('Process must be started before calling %s.', $functionName)); |
} |
} |
|
/** |
* Ensures the process is terminated, throws a LogicException if the process has a status different than `terminated`. |
* |
* @param string $functionName The function name that was called |
* |
* @throws LogicException If the process is not yet terminated. |
*/ |
private function requireProcessIsTerminated($functionName) |
{ |
if (!$this->isTerminated()) { |
throw new LogicException(sprintf('Process must be terminated before calling %s.', $functionName)); |
} |
} |
|
/** |
* Escapes a string to be used as a shell argument. |
* |
* @param string $argument The argument that will be escaped |
* |
* @return string The escaped argument |
*/ |
private function escapeArgument($argument) |
{ |
if ('\\' !== DIRECTORY_SEPARATOR) { |
return "'".str_replace("'", "'\\''", $argument)."'"; |
} |
if ('' === $argument = (string) $argument) { |
return '""'; |
} |
if (false !== strpos($argument, "\0")) { |
$argument = str_replace("\0", '?', $argument); |
} |
if (!preg_match('/[\/()%!^"<>&|\s]/', $argument)) { |
return $argument; |
} |
$argument = preg_replace('/(\\\\+)$/', '$1$1', $argument); |
|
return '"'.str_replace(array('"', '^', '%', '!', "\n"), array('""', '"^^"', '"^%"', '"^!"', '!LF!'), $argument).'"'; |
} |
} |