/**
* Validates settings coming from an HTML form and also for internal use.
* This is used when saving form an HTML form to the db, and also when reading from the db
* back into the global settings.
* @param string $name
* @param mixed $value
*/
public static function validate($name, $value)
{
if (!is_string($name)) {
return '';
}
// Type-cast to correct value for known settings
if (($setting = CrayonGlobalSettings::get($name)) != FALSE) {
// Booleans settings that are sent as string are allowed to have "false" == false
if (is_string($value) && is_bool($setting->def())) {
$value = CrayonUtil::str_to_bool($value);
}
// Ensure we don't cast integer settings to 0 because $value doesn't have any numbers in it
if (is_string($value) && is_int($setting->def())) {
// Only occurs when saving from the form ($_POST values are strings)
if ($value == '' || ($cleaned = CrayonUtil::clean_int($value, FALSE)) == '') {
// The value sent has no integers, change to default
$value = $setting->def();
} else {
// Cleaned value is int
$value = $cleaned;
}
$value = intval($value);
// Cast all other settings as usual
} else {
if (!settype($value, $setting->type())) {
// If we can't cast, then use default value
if ($setting->is_array()) {
$value = 0;
// default index
} else {
$value = $setting->def();
}
}
}
} else {
// If setting not found, remove value
return '';
}
// Validations
if ($name == CrayonSettings::HEIGHT || $name == CrayonSettings::WIDTH) {
if ($value < 0) {
$value = 0;
}
}
switch ($name) {
case CrayonSettings::LOCAL_PATH:
$path = parse_url($value, PHP_URL_PATH);
// Remove all spaces, prefixed and trailing forward slashes
$path = preg_replace('#^/*|/*$|\\s*#', '', $path);
// Replace backslashes
$path = preg_replace('#\\\\#', '/', $path);
// Append trailing forward slash
if (!empty($path)) {
$path .= '/';
}
return $path;
case CrayonSettings::TAB_SIZE:
$value = abs($value);
break;
case CrayonSettings::FONT_SIZE:
if ($value < 1) {
$value = 1;
}
break;
case CrayonSettings::THEME:
$value = strtolower($value);
// XXX validate settings here
}
// If no validation occurs, return value
return $value;
}
