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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form\Extension\Core\DataTransformer;
use Symfony\Component\Form\Exception\TransformationFailedException;
use Symfony\Component\Form\Exception\UnexpectedTypeException;
/**
* Transforms between a normalized time and a localized time string/array.
*
* @author Bernhard Schussek <bschussek@gmail.com>
* @author Florian Eckerstorfer <florian@eckerstorfer.org>
*/
class DateTimeToArrayTransformer extends BaseDateTimeTransformer
{
private $pad;
private $fields;
/**
* Constructor.
*
* @param string $inputTimezone The input timezone
* @param string $outputTimezone The output timezone
* @param array $fields The date fields
* @param Boolean $pad Whether to use padding
*
* @throws UnexpectedTypeException if a timezone is not a string
*/
public function __construct($inputTimezone = null, $outputTimezone = null, array $fields = null, $pad = false)
{
parent::__construct($inputTimezone, $outputTimezone);
if (null === $fields) {
$fields = array('year', 'month', 'day', 'hour', 'minute', 'second');
}
$this->fields = $fields;
$this->pad = (Boolean) $pad;
}
/**
* Transforms a normalized date into a localized date.
*
* @param \DateTime $dateTime Normalized date.
*
* @return array Localized date.
*
* @throws TransformationFailedException If the given value is not an
* instance of \DateTime or if the
* output timezone is not supported.
*/
public function transform($dateTime)
{
if (null === $dateTime) {
return array_intersect_key(array(
'year' => '',
'month' => '',
'day' => '',
'hour' => '',
'minute' => '',
'second' => '',
), array_flip($this->fields));
}
if (!$dateTime instanceof \DateTime) {
throw new TransformationFailedException('Expected a \DateTime.');
}
$dateTime = clone $dateTime;
if ($this->inputTimezone !== $this->outputTimezone) {
try {
$dateTime->setTimezone(new \DateTimeZone($this->outputTimezone));
} catch (\Exception $e) {
throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
}
}
$result = array_intersect_key(array(
'year' => $dateTime->format('Y'),
'month' => $dateTime->format('m'),
'day' => $dateTime->format('d'),
'hour' => $dateTime->format('H'),
'minute' => $dateTime->format('i'),
'second' => $dateTime->format('s'),
), array_flip($this->fields));
if (!$this->pad) {
foreach ($result as &$entry) {
// remove leading zeros
$entry = (string) (int) $entry;
}
}
return $result;
}
/**
* Transforms a localized date into a normalized date.
*
* @param array $value Localized date
*
* @return \DateTime Normalized date
*
* @throws TransformationFailedException If the given value is not an array,
* if the value could not be transformed
* or if the input timezone is not
* supported.
*/
public function reverseTransform($value)
{
if (null === $value) {
return null;
}
if (!is_array($value)) {
throw new TransformationFailedException('Expected an array.');
}
if ('' === implode('', $value)) {
return null;
}
$emptyFields = array();
foreach ($this->fields as $field) {
if (!isset($value[$field])) {
$emptyFields[] = $field;
}
}
if (count($emptyFields) > 0) {
throw new TransformationFailedException(
sprintf('The fields "%s" should not be empty', implode('", "', $emptyFields)
));
}
if (isset($value['month']) && !ctype_digit($value['month']) && !is_int($value['month'])) {
throw new TransformationFailedException('This month is invalid');
}
if (isset($value['day']) && !ctype_digit($value['day']) && !is_int($value['day'])) {
throw new TransformationFailedException('This day is invalid');
}
if (isset($value['year']) && !ctype_digit($value['year']) && !is_int($value['year'])) {
throw new TransformationFailedException('This year is invalid');
}
if (!empty($value['month']) && !empty($value['day']) && !empty($value['year']) && false === checkdate($value['month'], $value['day'], $value['year'])) {
throw new TransformationFailedException('This is an invalid date');
}
try {
$dateTime = new \DateTime(sprintf(
'%s-%s-%s %s:%s:%s %s',
empty($value['year']) ? '1970' : $value['year'],
empty($value['month']) ? '1' : $value['month'],
empty($value['day']) ? '1' : $value['day'],
empty($value['hour']) ? '0' : $value['hour'],
empty($value['minute']) ? '0' : $value['minute'],
empty($value['second']) ? '0' : $value['second'],
$this->outputTimezone
));
if ($this->inputTimezone !== $this->outputTimezone) {
$dateTime->setTimezone(new \DateTimeZone($this->inputTimezone));
}
} catch (\Exception $e) {
throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e);
}
return $dateTime;
}
}
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