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<?php |
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/* |
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* This file is part of Respect/Validation. |
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* |
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* (c) Alexandre Gomes Gaigalas <[email protected]> |
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* |
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* For the full copyright and license information, please view the "LICENSE.md" |
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* file that was distributed with this source code. |
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*/ |
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namespace Respect\Validation\Rules; |
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use DateTime; |
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use DateTimeInterface; |
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class Date extends AbstractRule |
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{ |
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public $format = null; |
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public function __construct($format = null) |
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{ |
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$this->format = $format; |
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} |
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public function validate($input) |
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{ |
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if ($input instanceof DateTimeInterface |
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|| $input instanceof DateTime) { |
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return true; |
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} |
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if (!is_scalar($input)) { |
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return false; |
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} |
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$inputString = (string) $input; |
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if (is_null($this->format)) { |
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return false !== strtotime($inputString); |
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} |
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$exceptionalFormats = [ |
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'c' => 'Y-m-d\TH:i:sP', |
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'r' => 'D, d M Y H:i:s O', |
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]; |
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if (in_array($this->format, array_keys($exceptionalFormats))) { |
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$this->format = $exceptionalFormats[$this->format]; |
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} |
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return $this->isValidForFormatProvided($input); |
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} |
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private function isValidForFormatProvided($input) |
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{ |
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$info = date_parse_from_format($this->format, $input); |
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if (!$this->isParsable($info)) { |
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return false; |
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} |
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if (!$this->hasDateFormat()) { |
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return true; |
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} |
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return $this->hasValidDate($info); |
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} |
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private function isParsable(array $info) |
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{ |
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return ($info['error_count'] === 0 && $info['warning_count'] === 0); |
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} |
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private function hasDateFormat() |
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{ |
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return preg_match('/[djSFmMnYy]/', $this->format) > 0; |
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} |
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private function hasValidDate(array $info) |
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{ |
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if ($info['day']) { |
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return checkdate((int) $info['month'], $info['day'], (int) $info['year']); |
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} |
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return checkdate($info['month'] ?: 1, $info['day'] ?: 1, $info['year'] ?: 1); |
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} |
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} |
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Respect /
Validation
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