/**
* Recursively parses a condition (key:value), returning the key and value
*
* @param string $condition Condition to parse
* @return array
*/
public static function condition($condition)
{
// has a colon, is a comparison
if (strstr($condition, ":") !== FALSE) {
// breaks this into key => value
$parts = explode(":", $condition, 2);
$condition_array = array("key" => trim($parts[0]), "value" => Parse::conditionValue(trim($parts[1])));
// doesn't have a colon, looking for existence (or lack thereof)
} else {
$condition = trim($condition);
$condition_array = array("key" => $condition, "value" => array());
if (substr($condition, 0, 1) === "!") {
$condition_array['key'] = substr($condition, 1);
$condition_array['value'] = array("kind" => "existence", "type" => "lacks");
} else {
$condition_array['value'] = array("kind" => "existence", "type" => "has");
}
}
// return the parsed array
return $condition_array;
}