function parse_in($value)
{
if (preg_match("/(" . LENGTH_REGEXP . "|" . PERCENTAGE_REGEXP . "|" . TEXT_REGEXP . "|\\b0\\b)\\s+(" . LENGTH_REGEXP . "|" . PERCENTAGE_REGEXP . "|" . TEXT_REGEXP . "|\\b0\\b)/", $value, $matches)) {
$x = $matches[1];
$y = $matches[2];
$type_x = CSSBackgroundPosition::detect_type($x);
$type_y = CSSBackgroundPosition::detect_type($y);
if (is_null($type_x) && is_null($type_y)) {
return CSSBackgroundPosition::build_value($x, $y);
}
if ($type_x == BG_POSITION_SUBVALUE_TYPE_HORZ || $type_y == BG_POSITION_SUBVALUE_TYPE_VERT) {
return CSSBackgroundPosition::build_value($x, $y);
}
return CSSBackgroundPosition::build_value($y, $x);
}
// These values should be processed separately at lastt
if (preg_match("/\\b(top)\\b/", $value)) {
return array(array(50, true), array(0, true));
}
if (preg_match("/\\b(center)\\b/", $value)) {
return array(array(50, true), array(50, true));
}
if (preg_match("/\\b(bottom)\\b/", $value)) {
return array(array(50, true), array(100, true));
}
if (preg_match("/\\b(left)\\b/", $value)) {
return array(array(0, true), array(50, true));
}
if (preg_match("/\\b(right)\\b/", $value)) {
return array(array(100, true), array(50, true));
}
if (preg_match("/" . LENGTH_REGEXP . "|" . PERCENTAGE_REGEXP . "/", $value, $matches)) {
$x = $matches[0];
return CSSBackgroundPosition::build_value($x, "50%");
}
return null;
}
