/**
* Evaluate an option
*
* Lists of Supported Types)
* - bool : boolean true or false
* - string : string
* - array : array
* - enum : take only one element of possible values
* - enumarray : take only elements in possible values
* - number : number
* - interval : interval string. See parse_interval for details
* - options : options
*
* @access private
* @static
* @param mixed $val option value.
* @param string $type option type
* @param mixed $conf config. See evaluate_options.
* @return array array(evaluated value, invalid value)
* @uses parse_interval
* @uses evaluate_options
* @version $Id: v 1.7 2008-07-30 11:14:46 sonots $
* @since v 1.0
*/
function evaluate_option($val, $type, $conf = null)
{
if (is_null($val)) {
return array(null, null);
}
$retval = $unknown = null;
switch ($type) {
case 'bool':
if ($val === true && is_bool($conf)) {
$retval = $conf;
break;
}
if ($val === false || $val === '0' || $val === 'off' || $val === 'false' || $val === 'FALSE') {
$retval = false;
} elseif ($val === true || $val === '' || $val === '1' || $val === 'on' || $val === 'true' || $val === 'TRUE') {
$retval = true;
} else {
$unknown = $val;
}
break;
case 'string':
if ($val === true) {
// no "=value" option is set to true at parse_option_line
$retval = is_string($conf) ? $conf : null;
break;
}
if (is_string($val)) {
$retval = $val;
} else {
$unknown = $val;
}
break;
case 'array':
if ($val === true) {
// no "=value" option is set to true at parse_option_line
$retval = is_array($conf) ? $conf : null;
break;
}
$retval = PluginSonotsOption::boolean_to_numeric((array) $val);
break;
case 'enum':
if ($val === true) {
$retval = is_array($conf) ? reset($conf) : null;
break;
}
if (in_array($val, $conf)) {
$retval = $val;
} else {
$unknown = $val;
}
break;
case 'enumarray':
// special array type
if ($val === true) {
$retval = is_array($conf) ? $conf : null;
break;
}
$retval = array();
$unknown = array();
$val = PluginSonotsOption::boolean_to_numeric((array) $val);
foreach ($val as $elem) {
if (in_array($elem, $conf)) {
$retval[] = $elem;
} else {
$unknown[] = $elem;
}
}
if (empty($retval)) {
$retval = null;
}
if (empty($unknown)) {
$unknown = null;
}
break;
case 'options':
if ($val === true) {
$val = array();
}
list($retval, $unknown) = PluginSonotsOption::evaluate_options($val, $conf);
if (empty($retval)) {
$retval = null;
}
if (empty($unknown)) {
$unknown = null;
}
break;
case 'number':
if ($val === true) {
$retval = is_int($conf) || is_float($conf) ? $conf : null;
break;
}
if (is_numeric($val)) {
$retval = $val;
} else {
$unknown = $val;
}
break;
case 'interval':
// $conf is default2 or array(default2, start)
if ($val === true) {
$val = is_array($conf) ? $conf[0] : $conf;
}
$start = is_array($conf) ? $conf[1] : 1;
$retval = PluginSonotsOption::parse_interval($val, $start);
if (is_null($retval)) {
$unknown = $val;
}
break;
default:
$unknown = $val;
break;
}
return array($retval, $unknown);
}
