167 lines
3.8 KiB
PHP
167 lines
3.8 KiB
PHP
<?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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/**
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* UnixPipes implementation uses unix pipes as handles.
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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 UnixPipes extends AbstractPipes
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{
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private $ttyMode;
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private $ptyMode;
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private $haveReadSupport;
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public function __construct(?bool $ttyMode, bool $ptyMode, $input, bool $haveReadSupport)
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{
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$this->ttyMode = $ttyMode;
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$this->ptyMode = $ptyMode;
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$this->haveReadSupport = $haveReadSupport;
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parent::__construct($input);
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}
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/**
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* @return array
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*/
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public function __sleep()
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{
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throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
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}
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public function __wakeup()
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{
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throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
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}
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public function __destruct()
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{
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$this->close();
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}
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/**
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* {@inheritdoc}
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*/
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public function getDescriptors(): array
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{
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if (!$this->haveReadSupport) {
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$nullstream = fopen('/dev/null', 'c');
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return [
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['pipe', 'r'],
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$nullstream,
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$nullstream,
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];
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}
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if ($this->ttyMode) {
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return [
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['file', '/dev/tty', 'r'],
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['file', '/dev/tty', 'w'],
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['file', '/dev/tty', 'w'],
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];
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}
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if ($this->ptyMode && Process::isPtySupported()) {
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return [
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['pty'],
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['pty'],
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['pty'],
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];
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}
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return [
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['pipe', 'r'],
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['pipe', 'w'], // stdout
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['pipe', 'w'], // stderr
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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(): array
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{
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return [];
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}
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/**
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* {@inheritdoc}
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*/
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public function readAndWrite(bool $blocking, bool $close = false): array
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{
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$this->unblock();
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$w = $this->write();
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$read = $e = [];
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$r = $this->pipes;
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unset($r[0]);
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// let's have a look if something changed in streams
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set_error_handler([$this, 'handleError']);
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if (($r || $w) && false === stream_select($r, $w, $e, 0, $blocking ? Process::TIMEOUT_PRECISION * 1E6 : 0)) {
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restore_error_handler();
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// if a system call has been interrupted, forget about it, let's try again
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// otherwise, an error occurred, let's reset pipes
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if (!$this->hasSystemCallBeenInterrupted()) {
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$this->pipes = [];
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}
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return $read;
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}
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restore_error_handler();
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foreach ($r as $pipe) {
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// prior PHP 5.4 the array passed to stream_select is modified and
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// lose key association, we have to find back the key
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$read[$type = array_search($pipe, $this->pipes, true)] = '';
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do {
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$data = @fread($pipe, self::CHUNK_SIZE);
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$read[$type] .= $data;
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} while (isset($data[0]) && ($close || isset($data[self::CHUNK_SIZE - 1])));
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if (!isset($read[$type][0])) {
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unset($read[$type]);
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}
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if ($close && feof($pipe)) {
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fclose($pipe);
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unset($this->pipes[$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(): bool
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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(): bool
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{
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return (bool) $this->pipes;
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}
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}
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