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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Console\Adapter;
use Zend\Console\Charset;
/**
* Virtual buffer adapter
*/
class Virtual extends AbstractAdapter
{
/**
* Whether or not mbstring is enabled
*
* @var null|bool
*/
protected static $hasMBString;
/**
* Results of mode system command
*
* @var mixed
*/
protected $modeResult;
/**
* Determine and return current console width.
*
* @return int
*/
public function getWidth()
{
static $width;
if ($width > 0) {
return $width;
}
// Try to read console size from "mode" command
if ($this->modeResult === null) {
$this->runProbeCommand();
}
if (preg_match('/Columns\:\s+(\d+)/', $this->modeResult, $matches)) {
$width = $matches[1];
} else {
$width = parent::getWidth();
}
return $width;
}
/**
* Determine and return current console height.
*
* @return false|int
*/
public function getHeight()
{
static $height;
if ($height > 0) {
return $height;
}
// Try to read console size from "mode" command
if ($this->modeResult === null) {
$this->runProbeCommand();
}
if (preg_match('/Rows\:\s+(\d+)/', $this->modeResult, $matches)) {
$height = $matches[1];
} else {
$height = parent::getHeight();
}
return $height;
}
/**
* Run and store the results of mode command
*
* @return void
*/
protected function runProbeCommand()
{
exec('mode', $output, $return);
if ($return || ! count($output)) {
$this->modeResult = '';
} else {
$this->modeResult = trim(implode('', $output));
}
}
/**
* Check if console is UTF-8 compatible
*
* @return bool
*/
public function isUtf8()
{
// Try to read code page info from "mode" command
if ($this->modeResult === null) {
$this->runProbeCommand();
}
if (preg_match('/Code page\:\s+(\d+)/', $this->modeResult, $matches)) {
return (int) $matches[1] == 65001;
}
return false;
}
/**
* Return current console window title.
*
* @return string
*/
public function getTitle()
{
// Try to use powershell to retrieve console window title
exec('powershell -command "write $Host.UI.RawUI.WindowTitle"', $output, $result);
if ($result || ! $output) {
return '';
}
return trim($output, "\r\n");
}
/**
* Set Console charset to use.
*
* @param Charset\CharsetInterface $charset
*/
public function setCharset(Charset\CharsetInterface $charset)
{
$this->charset = $charset;
}
/**
* Get charset currently in use by this adapter.
*
* @return Charset\CharsetInterface $charset
*/
public function getCharset()
{
if ($this->charset === null) {
$this->charset = $this->getDefaultCharset();
}
return $this->charset;
}
/**
* @return Charset\AsciiExtended
*/
public function getDefaultCharset()
{
return new Charset\AsciiExtended;
}
/**
* Switch to UTF mode
*
* @return void
*/
protected function switchToUtf8()
{
shell_exec('mode con cp select=65001');
}
}