function Platform::isTty

Parameters

?resource $fd Open file descriptor or null to default to STDOUT:

2 calls to Platform::isTty()

Application::doRun in vendor/composer/composer/src/Composer/Console/Application.php

Runs the current application.

ProcessExecutor::executeTty in vendor/composer/composer/src/Composer/Util/ProcessExecutor.php

runs a process on the commandline in TTY mode

File

vendor/composer/composer/src/Composer/Util/Platform.php, line 248

Class

Platform

Platform helper for uniform platform-specific tests.

Namespace

Composer\Util

Code

public static function isTty($fd = null) : bool {
    if ($fd === null) {
        $fd = defined('STDOUT') ? STDOUT : fopen('php://stdout', 'w');
        if ($fd === false) {
            return false;
        }
    }
    // detect msysgit/mingw and assume this is a tty because detection
    // does not work correctly, see https://github.com/composer/composer/issues/9690
    if (in_array(strtoupper((string) self::getEnv('MSYSTEM')), [
        'MINGW32',
        'MINGW64',
    ], true)) {
        return true;
    }
    // modern cross-platform function, includes the fstat
    // fallback so if it is present we trust it
    if (function_exists('stream_isatty')) {
        return stream_isatty($fd);
    }
    // only trusting this if it is positive, otherwise prefer fstat fallback
    if (function_exists('posix_isatty') && posix_isatty($fd)) {
        return true;
    }
    $stat = @fstat($fd);
    if ($stat === false) {
        return false;
    }
    // Check if formatted mode is S_IFCHR
    return 020000 === ($stat['mode'] & 0170000);
}