/**
* Convert localized string representations to integer, float or date values
*
* Subclasses can support localized input formats by calling this method
* from a filter.
*
* Non-string values get trimmed and converted to integer, float or
* \DateTime, depending on $type. Invalid values are returned as string. The
* input filter should validate filtered data by checking the datatype via
* validateType().
*
* @param string $value Localized input string
* @param string $type Data type (integer, float, date). Any other value will be ignored.
* @return mixed Normalized value or input string
*/
public function normalize($value, $type)
{
// Integers and floats are validated first to prevent successful parsing
// of strings containing invalid characters with the invalid part simply
// cut off.
switch ($type) {
case 'integer':
$value = trim($value);
if (\Zend\Validator\StaticValidator::execute($value, 'Zend\\I18n\\Validator\\IsInt')) {
$value = \Zend\Filter\StaticFilter::execute($value, 'Zend\\I18n\\Filter\\NumberParse', array('type' => \NumberFormatter::TYPE_INT32));
}
break;
case 'float':
$value = trim($value);
if (\Zend\Validator\StaticValidator::execute($value, 'Zend\\I18n\\Validator\\IsFloat')) {
$value = \Zend\Filter\StaticFilter::execute($value, 'Zend\\I18n\\Filter\\NumberParse', array('type' => \NumberFormatter::TYPE_DOUBLE));
}
break;
case 'date':
$value = trim($value);
$validator = new \Zend\I18n\Validator\DateTime();
$validator->setDateType(\IntlDateFormatter::SHORT);
if ($validator->isValid($value)) {
// Some systems accept invalid date separators, like '/'
// with a de_DE locale which should accept only '.'.
// An extra comparision of the locale-specific pattern and
// the input string is necessary.
// This also enforces 4-digit years to avoid any confusion
// with 2-digit year input.
$pattern = preg_quote($validator->getPattern(), '#');
// Get the year part out of the way first.
$pattern = preg_replace('/y+/', '§', $pattern);
// Remaining letters are placeholders for digits.
$pattern = preg_replace('/[a-zA-Z]+/', '\\d+', $pattern);
// Set the year pattern.
$pattern = str_replace('§', '\\d{4}', $pattern);
if (preg_match("#^{$pattern}\$#", $value)) {
$formatter = new \IntlDateFormatter(\Locale::getDefault(), \IntlDateFormatter::SHORT, \IntlDateFormatter::NONE, 'UTC');
$value = \DateTime::createFromFormat('U', $formatter->parse($value));
}
}
break;
}
return $value;
}
