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<?php
/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
namespace Icinga\Cli;
use Icinga\Cli\AnsiScreen;
class Screen
{
protected static $instances = [];
protected $isUtf8;
public function getColumns()
{
$cols = (int) getenv('COLUMNS');
if (! $cols) {
// stty -a ?
$cols = (int) exec('tput cols');
}
if (! $cols) {
$cols = 80;
}
return $cols;
}
public function getRows()
{
$rows = (int) getenv('ROWS');
if (! $rows) {
// stty -a ?
$rows = (int) exec('tput lines');
}
if (! $rows) {
$rows = 25;
}
return $rows;
}
public function strlen($string)
{
return strlen($string);
}
public function newlines($count = 1)
{
return str_repeat("\n", $count);
}
public function center($txt)
{
$len = $this->strlen($txt);
$width = floor(($this->getColumns() + $len) / 2) - $len;
return str_repeat(' ', $width) . $txt;
}
public function hasUtf8()
{
if ($this->isUtf8 === null) {
// null should equal 0 here, however seems to equal '' on some systems:
$current = setlocale(LC_ALL, 0);
$parts = preg_split('/;/', $current);
$lc_parts = array();
foreach ($parts as $part) {
if (strpos($part, '=') === false) {
continue;
}
list($key, $val) = preg_split('/=/', $part, 2);
$lc_parts[$key] = $val;
}
$this->isUtf8 = array_key_exists('LC_CTYPE', $lc_parts)
&& preg_match('~\.UTF-8$~i', $lc_parts['LC_CTYPE']);
}
return $this->isUtf8;
}
public function clear()
{
return "\n";
}
public function underline($text)
{
return $text;
}
public function colorize($text, $fgColor = null, $bgColor = null)
{
return $text;
}
public static function instance($output = STDOUT)
{
if (! isset(self::$instances[(int) $output])) {
if (function_exists('posix_isatty') && posix_isatty($output)) {
self::$instances[(int) $output] = new AnsiScreen();
} else {
self::$instances[(int) $output] = new Screen();
}
}
return self::$instances[(int) $output];
}
}
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