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<?php |
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/* |
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* This file is part of the Valdi package. |
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* |
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* (c) Philip Lehmann-Böhm <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Valdi\Validator; |
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use Valdi\ValidationException; |
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/** |
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* Abstract validator to compare date times. |
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* For the format, see: |
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* http://php.net/manual/en/datetime.createfromformat.php |
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*/ |
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abstract class AbstractDateTimeComparator extends ParametrizedValidator { |
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/** |
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* Holds the amount of parameters. |
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*/ |
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protected $amountOfParameters = 1; |
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/** |
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* Holds the type of the validator. |
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*/ |
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protected $type; |
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/** |
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* Holds whether to parse the parameters as \DateTimes so the child class |
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* can decide. |
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*/ |
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protected $parseParametersAsDateTimes = true; |
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/** |
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* Compares date times. |
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* |
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* @param \DateTime $date |
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* the first date to compare |
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* @param \DateTime[] $datetimes |
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* the date times to compare to |
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* @param array $parameters |
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* the original validator parameters |
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* |
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* @return boolean |
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* true if the dates compare |
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*/ |
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abstract protected function compare(\DateTime $date, array $datetimes, array $parameters); |
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/** |
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* Gets a date time format from the parameters if given or a default one. |
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* |
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* @param string[] $parameters |
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* the parameters |
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* |
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* @return string |
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* the date time format |
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*/ |
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protected function getDateTimeFormat($parameters) { |
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$format = 'Y-m-d H:i:s'; |
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$parametersCount = count($parameters); |
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if ($parametersCount > $this->amountOfParameters) { |
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$format = $parameters[$parametersCount - 1]; |
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} |
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return $format; |
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} |
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/** |
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* Interprets the given parameters as date times and returns them. |
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* |
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* @param array $parameters |
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* the paramters |
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* @param string $format |
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* the date time format |
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* |
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* @return \DateTime[] |
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* the date times |
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*/ |
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protected function getDateTimes(array $parameters, $format) { |
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$datetimes = array(); |
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for ($i = 0; $i < $this->amountOfParameters; ++$i) { |
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$datetime = \DateTime::createFromFormat($format, $parameters[$i]); |
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if ($datetime === false) { |
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throw new ValidationException('"' . $this->type . '" expects a date of the format "' . $format . '".'); |
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} |
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$datetimes[] = $datetime; |
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} |
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return $datetimes; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isValid($value, array $parameters) { |
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$this->validateMinParameterCount($this->type, $this->amountOfParameters, $parameters); |
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if (in_array($value, array('', null), true)) { |
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return true; |
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} |
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$format = $this->getDateTimeFormat($parameters); |
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$datetimes = $this->parseParametersAsDateTimes ? $this->getDateTimes($parameters, $format) : array(); |
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$date = \DateTime::createFromFormat($format, $value); |
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if ($date === false) { |
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return false; |
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} |
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return $this->compare($date, $datetimes, $parameters); |
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} |
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} |
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philiplb /
Valdi
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Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.