<?php
/*################################################################################*
#
# (c)Copyright Till Wehowski, http://Webfan.de
# License: Do What The Fuck You Want To Public License
*/
namespace webdof\Serialize\Bit;
use webdof\Serialize;
class FlagMask extends \webdof\Serialize\Bit\Bitmask
{
const OK = 0; //offset bit keys/num
const OL = 1; //offset label text
const OV = 2; //offset value
const P2 = 3;
protected $labels;
public function clear()
{
parent::clear();
$this->setLabels( array( ) );
}
public function toInt()
{
$check = 0;
foreach($this->labels as $bit => $label)
{
if($label[self::OV])$check += $label[self::P2];
}
$this->flags = $check;
return $this->flags;
}
public function calc($r)
{
if(!is_array($this->labels))$this->labels = array();
foreach($this->labels as $bit => $label)
{
$this->labels[$bit][self::OV] = 0;
}
$check = 0;
foreach($r as $bit => $pow)
{
$this->labels[$bit][self::OV] = 1;
$this->labels[$bit][self::P2] = $pow;
$check += $pow;
}
if($check !== $this->flags)
{
echo "error invalid value: \n";
var_dump($check, $this->flags);
echo "\n";
return trigger_error( 'Inconsistence ('.$check.' expected, '.$this->flags.' given) in '.get_class($this)
.' '.__METHOD__.' '.basename(__FILE__).' line '.__LINE__ , E_USER_FATAL );
}
return $r;
}
public function load($flags)
{
$this->flags = (int)$flags;
$r = parent::load($this->flags);
return $this->calc($r);
}
public function max()
{
return pow(2,count($this->labels));
}
public function getLabels()
{
return $this->labels;
}
public function setLabels(Array $labels = array( array('read', 'lesen'), array('write', 'Schreiben erlaubt', FALSE) ) )
{
$this->load( 0 );
$this->labels = $labels;
foreach($this->labels as $bit => $label)
{
$this->labels[$bit] = $label;
$this->set($label[self::OK], ((isset($label[self::OV]) && $label[self::OV] === TRUE )
? TRUE
: FALSE)
);
}
}
public function is($flag)
{
if(is_string($flag))
{
foreach($this->labels as $bit => $label)
{
if($label[self::OK] !== $flag)
{
continue;
}
$flag = $bit;
break;
}
}
return parent::is($flag);
}
public function set($flag, $value)
{
if(is_string($flag))
{
foreach($this->labels as $bit => $label)
{
if($label[self::OK] !== $flag)
{
continue;
}
$flag = $bit;
break;
}
}
$this->labels[$flag][self::OV] = ($value==1) ? $value : FALSE;
$this->labels[$flag][self::P2] = pow(2,$flag);
parent::set($flag, $value);
$this->toInt();
}
}
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