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[Process] Create a "isTtySupported" static method #25142

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merged 1 commit into from
Dec 7, 2017
Merged

[Process] Create a "isTtySupported" static method #25142

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27 changes: 18 additions & 9 deletions src/Symfony/Component/Process/Process.php
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Original file line number Diff line number Diff line change
Expand Up @@ -976,16 +976,9 @@ 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 (!$isTtySupported) {
throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.');
}
if ($tty && !self::isTtySupported()) {
throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.');
}

$this->tty = (bool) $tty;
Expand Down Expand Up @@ -1169,6 +1162,22 @@ public function checkTimeout()
}
}

/**
* Returns whether TTY is supported on the current operating system.
*
* @return bool
*/
public static function isTtySupported()
{
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);
}

return $isTtySupported;
}

/**
* Returns whether PTY is supported on the current operating system.
*
Expand Down