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<?php |
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namespace TreeHouse\Feeder\Modifier\Data\Transformer; |
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use TreeHouse\Feeder\Exception\TransformationFailedException; |
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use TreeHouse\Feeder\Exception\UnexpectedTypeException; |
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/** |
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* Transforms between a normalized time and a localized time string. |
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* |
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* Copied from Symfony's Form component |
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*/ |
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class StringToDateTimeTransformer extends AbstractDateTimeTransformer |
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{ |
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/** |
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* @var string |
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*/ |
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protected $format; |
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/** |
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* @param string $format The date format |
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* @param string $inputTimezone The name of the input timezone |
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* @param string $outputTimezone The name of the output timezone |
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* @param bool $resetFields Whether to reset date/time fields that are not defined in the format |
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* |
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* @throws UnexpectedTypeException |
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* @throws \InvalidArgumentException |
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*/ |
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public function __construct($format = 'Y-m-d H:i:s', $inputTimezone = null, $outputTimezone = null, $resetFields = true) |
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{ |
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parent::__construct($inputTimezone, $outputTimezone); |
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/* |
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* The character "|" in the format makes sure that the parts of a date |
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* that are *not* specified in the format are reset to the corresponding |
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* values from 1970-01-01 00:00:00 instead of the current time. |
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* |
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* @see http://php.net/manual/en/datetime.createfromformat.php |
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*/ |
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if ($resetFields && false === strpos($format, '|')) { |
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$format .= '|'; |
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} |
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$this->format = $format; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function transform($value) |
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{ |
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if (null === $value) { |
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return null; |
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} |
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if (is_scalar($value)) { |
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$value = (string) $value; |
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} |
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if (!is_string($value)) { |
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throw new TransformationFailedException( |
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sprintf('Expected a string to transform, got "%s" instead.', json_encode($value)) |
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); |
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} |
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if ('' === $value) { |
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return null; |
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} |
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try { |
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$outputTz = new \DateTimeZone($this->outputTimezone); |
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$dateTime = \DateTime::createFromFormat($this->format, $value, $outputTz); |
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$lastErrors = \DateTime::getLastErrors(); |
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if (0 < $lastErrors['warning_count'] || 0 < $lastErrors['error_count']) { |
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throw new TransformationFailedException( |
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implode(', ', array_merge( |
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array_values($lastErrors['warnings']), |
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array_values($lastErrors['errors']) |
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)) |
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); |
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} |
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} catch (\Exception $e) { |
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throw new TransformationFailedException($e->getMessage(), $e->getCode(), $e); |
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} |
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return $dateTime; |
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} |
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} |
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treehouselabs /
feeder
