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200
Laravel/vendor/symfony/process/Pipes/WindowsPipes.php
vendored
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200
Laravel/vendor/symfony/process/Pipes/WindowsPipes.php
vendored
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Process\Pipes;
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use Symfony\Component\Process\Process;
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use Symfony\Component\Process\Exception\RuntimeException;
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/**
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* WindowsPipes implementation uses temporary files as handles.
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*
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* @see https://bugs.php.net/bug.php?id=51800
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* @see https://bugs.php.net/bug.php?id=65650
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*
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* @author Romain Neutron <imprec@gmail.com>
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*
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* @internal
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*/
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class WindowsPipes extends AbstractPipes
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{
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/** @var array */
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private $files = array();
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/** @var array */
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private $fileHandles = array();
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/** @var array */
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private $readBytes = array(
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Process::STDOUT => 0,
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Process::STDERR => 0,
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);
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/** @var bool */
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private $haveReadSupport;
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public function __construct($input, $haveReadSupport)
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{
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$this->haveReadSupport = (bool) $haveReadSupport;
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if ($this->haveReadSupport) {
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// Fix for PHP bug #51800: reading from STDOUT pipe hangs forever on Windows if the output is too big.
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// Workaround for this problem is to use temporary files instead of pipes on Windows platform.
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//
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// @see https://bugs.php.net/bug.php?id=51800
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$pipes = array(
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Process::STDOUT => Process::OUT,
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Process::STDERR => Process::ERR,
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);
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$tmpCheck = false;
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$tmpDir = sys_get_temp_dir();
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$lastError = 'unknown reason';
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set_error_handler(function ($type, $msg) use (&$lastError) { $lastError = $msg; });
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for ($i = 0;; ++$i) {
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foreach ($pipes as $pipe => $name) {
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$file = sprintf('%s\\sf_proc_%02X.%s', $tmpDir, $i, $name);
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if (file_exists($file) && !unlink($file)) {
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continue 2;
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}
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$h = fopen($file, 'xb');
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if (!$h) {
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$error = $lastError;
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if ($tmpCheck || $tmpCheck = unlink(tempnam(false, 'sf_check_'))) {
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continue;
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}
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restore_error_handler();
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throw new RuntimeException(sprintf('A temporary file could not be opened to write the process output: %s', $error));
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}
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if (!$h || !$this->fileHandles[$pipe] = fopen($file, 'rb')) {
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continue 2;
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}
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if (isset($this->files[$pipe])) {
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unlink($this->files[$pipe]);
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}
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$this->files[$pipe] = $file;
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}
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break;
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}
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restore_error_handler();
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}
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parent::__construct($input);
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}
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public function __destruct()
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{
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$this->close();
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$this->removeFiles();
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}
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/**
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* {@inheritdoc}
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*/
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public function getDescriptors()
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{
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if (!$this->haveReadSupport) {
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$nullstream = fopen('NUL', 'c');
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return array(
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array('pipe', 'r'),
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$nullstream,
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$nullstream,
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);
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}
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// We're not using pipe on Windows platform as it hangs (https://bugs.php.net/bug.php?id=51800)
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// We're not using file handles as it can produce corrupted output https://bugs.php.net/bug.php?id=65650
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// So we redirect output within the commandline and pass the nul device to the process
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return array(
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array('pipe', 'r'),
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array('file', 'NUL', 'w'),
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array('file', 'NUL', 'w'),
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);
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}
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/**
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* {@inheritdoc}
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*/
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public function getFiles()
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{
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return $this->files;
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}
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/**
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* {@inheritdoc}
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*/
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public function readAndWrite($blocking, $close = false)
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{
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$this->unblock();
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$w = $this->write();
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$read = $r = $e = array();
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if ($blocking) {
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if ($w) {
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@stream_select($r, $w, $e, 0, Process::TIMEOUT_PRECISION * 1E6);
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} elseif ($this->fileHandles) {
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usleep(Process::TIMEOUT_PRECISION * 1E6);
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}
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}
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foreach ($this->fileHandles as $type => $fileHandle) {
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$data = stream_get_contents($fileHandle, -1, $this->readBytes[$type]);
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if (isset($data[0])) {
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$this->readBytes[$type] += strlen($data);
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$read[$type] = $data;
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}
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if ($close) {
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fclose($fileHandle);
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unset($this->fileHandles[$type]);
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}
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}
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return $read;
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}
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/**
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* {@inheritdoc}
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*/
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public function haveReadSupport()
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{
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return $this->haveReadSupport;
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}
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/**
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* {@inheritdoc}
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*/
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public function areOpen()
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{
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return $this->pipes && $this->fileHandles;
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}
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/**
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* {@inheritdoc}
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*/
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public function close()
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{
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parent::close();
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foreach ($this->fileHandles as $handle) {
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fclose($handle);
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}
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$this->fileHandles = array();
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}
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/**
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* Removes temporary files.
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*/
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private function removeFiles()
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{
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foreach ($this->files as $filename) {
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if (file_exists($filename)) {
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@unlink($filename);
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}
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}
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$this->files = array();
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}
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}
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