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authorredmatrix <git@macgirvin.com>2016-05-10 12:12:20 +1000
committerredmatrix <git@macgirvin.com>2016-05-10 12:12:20 +1000
commitb7e7ef0bf3ad47729ef45282a92a78f0dc0e3ec4 (patch)
tree2e4f069d66885c5ca5b77154e9dd5a43ec004ff5 /library/symfony/process/Pipes/UnixPipes.php
parentea1173f8f632151d02c71fe6004c6a64d014e80a (diff)
parent0b8a7f1bd03edb2bb18eb050fcb0b482d0e231be (diff)
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Merge pull request #372 from anaqreon/plugin-repo
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Diffstat (limited to 'library/symfony/process/Pipes/UnixPipes.php')
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diff --git a/library/symfony/process/Pipes/UnixPipes.php b/library/symfony/process/Pipes/UnixPipes.php
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+<?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\Pipes;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * UnixPipes implementation uses unix pipes as handles.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+class UnixPipes extends AbstractPipes
+{
+ /** @var bool */
+ private $ttyMode;
+ /** @var bool */
+ private $ptyMode;
+ /** @var bool */
+ private $disableOutput;
+
+ public function __construct($ttyMode, $ptyMode, $input, $disableOutput)
+ {
+ $this->ttyMode = (bool) $ttyMode;
+ $this->ptyMode = (bool) $ptyMode;
+ $this->disableOutput = (bool) $disableOutput;
+
+ if (is_resource($input)) {
+ $this->input = $input;
+ } else {
+ $this->inputBuffer = (string) $input;
+ }
+ }
+
+ public function __destruct()
+ {
+ $this->close();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDescriptors()
+ {
+ if ($this->disableOutput) {
+ $nullstream = fopen('/dev/null', 'c');
+
+ return array(
+ array('pipe', 'r'),
+ $nullstream,
+ $nullstream,
+ );
+ }
+
+ if ($this->ttyMode) {
+ return array(
+ array('file', '/dev/tty', 'r'),
+ array('file', '/dev/tty', 'w'),
+ array('file', '/dev/tty', 'w'),
+ );
+ }
+
+ if ($this->ptyMode && Process::isPtySupported()) {
+ return array(
+ array('pty'),
+ array('pty'),
+ array('pty'),
+ );
+ }
+
+ return array(
+ array('pipe', 'r'),
+ array('pipe', 'w'), // stdout
+ array('pipe', 'w'), // stderr
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFiles()
+ {
+ return array();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function readAndWrite($blocking, $close = false)
+ {
+ // only stdin is left open, job has been done !
+ // we can now close it
+ if (1 === count($this->pipes) && array(0) === array_keys($this->pipes)) {
+ fclose($this->pipes[0]);
+ unset($this->pipes[0]);
+ }
+
+ if (empty($this->pipes)) {
+ return array();
+ }
+
+ $this->unblock();
+
+ $read = array();
+
+ if (null !== $this->input) {
+ // if input is a resource, let's add it to stream_select argument to
+ // fill a buffer
+ $r = array_merge($this->pipes, array('input' => $this->input));
+ } else {
+ $r = $this->pipes;
+ }
+ // discard read on stdin
+ unset($r[0]);
+
+ $w = isset($this->pipes[0]) ? array($this->pipes[0]) : null;
+ $e = null;
+
+ // let's have a look if something changed in streams
+ if (false === $n = @stream_select($r, $w, $e, 0, $blocking ? Process::TIMEOUT_PRECISION * 1E6 : 0)) {
+ // if a system call has been interrupted, forget about it, let's try again
+ // otherwise, an error occurred, let's reset pipes
+ if (!$this->hasSystemCallBeenInterrupted()) {
+ $this->pipes = array();
+ }
+
+ return $read;
+ }
+
+ // nothing has changed
+ if (0 === $n) {
+ return $read;
+ }
+
+ foreach ($r as $pipe) {
+ // prior PHP 5.4 the array passed to stream_select is modified and
+ // lose key association, we have to find back the key
+ $type = (false !== $found = array_search($pipe, $this->pipes)) ? $found : 'input';
+ $data = '';
+ while ('' !== $dataread = (string) fread($pipe, self::CHUNK_SIZE)) {
+ $data .= $dataread;
+ }
+
+ if ('' !== $data) {
+ if ($type === 'input') {
+ $this->inputBuffer .= $data;
+ } else {
+ $read[$type] = $data;
+ }
+ }
+
+ if (false === $data || (true === $close && feof($pipe) && '' === $data)) {
+ if ($type === 'input') {
+ // no more data to read on input resource
+ // use an empty buffer in the next reads
+ $this->input = null;
+ } else {
+ fclose($this->pipes[$type]);
+ unset($this->pipes[$type]);
+ }
+ }
+ }
+
+ if (null !== $w && 0 < count($w)) {
+ while (strlen($this->inputBuffer)) {
+ $written = fwrite($w[0], $this->inputBuffer, 2 << 18); // write 512k
+ if ($written > 0) {
+ $this->inputBuffer = (string) substr($this->inputBuffer, $written);
+ } else {
+ break;
+ }
+ }
+ }
+
+ // no input to read on resource, buffer is empty and stdin still open
+ if ('' === $this->inputBuffer && null === $this->input && isset($this->pipes[0])) {
+ fclose($this->pipes[0]);
+ unset($this->pipes[0]);
+ }
+
+ return $read;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function areOpen()
+ {
+ return (bool) $this->pipes;
+ }
+
+ /**
+ * Creates a new UnixPipes instance.
+ *
+ * @param Process $process
+ * @param string|resource $input
+ *
+ * @return UnixPipes
+ */
+ public static function create(Process $process, $input)
+ {
+ return new static($process->isTty(), $process->isPty(), $input, $process->isOutputDisabled());
+ }
+}