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<?php |
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/** |
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* This file is part of the League.csv library |
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* |
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* @license http://opensource.org/licenses/MIT |
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* @link https://github.com/thephpleague/csv/ |
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* @version 9.0.0 |
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* @package League.csv |
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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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declare(strict_types=1); |
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namespace League\Csv\Config; |
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use League\Csv\Exception; |
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/** |
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* An abstract class to enable basic CSV manipulation |
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* |
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* @package League.csv |
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* @since 9.0.0 |
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* @internal |
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*/ |
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trait ValidatorTrait |
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{ |
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/** |
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* Filter Csv control character |
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* |
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* @param string $char Csv control character |
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* @param string $type Csv control character type |
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* |
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* @throws Exception If the Csv control character is not one character only. |
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* |
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* @return string |
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*/ |
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protected function filterControl(string $char, string $type) |
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{ |
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if (1 == strlen($char)) { |
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return $char; |
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} |
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throw new Exception(sprintf('The %s must be a single character', $type)); |
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} |
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/** |
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* Validate an integer |
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* |
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* @param int $value |
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* @param int $min_value |
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* @param string $error_message |
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* |
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* @throws Exception If the value is invalid |
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* |
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* @return int |
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*/ |
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protected function filterInteger(int $value, int $min_value, string $error_message): int |
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{ |
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if ($value < $min_value) { |
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throw new Exception($error_message); |
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} |
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return $value; |
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} |
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/** |
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* Validates the array to be used by the fetchAssoc method |
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* |
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* @param array $keys |
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* |
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* @throws Exception If the submitted array fails the assertion |
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* |
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* @return array |
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*/ |
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protected function filterHeader(array $keys): array |
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{ |
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if (empty($keys)) { |
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return $keys; |
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} |
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if ($keys !== array_unique(array_filter($keys, [$this, 'isValidKey']))) { |
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throw new Exception('Use a flat array with unique string values'); |
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} |
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return $keys; |
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} |
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/** |
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* Returns whether the submitted value can be used as string |
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* |
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* @param mixed $value |
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* |
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* @return bool |
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*/ |
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protected function isValidKey(string $value) |
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{ |
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return is_scalar($value) || (is_object($value) && method_exists($value, '__toString')); |
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} |
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/** |
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* Strip the BOM sequence from a record |
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* |
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* @param string[] $row |
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* @param int $bom_length |
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* @param string $enclosure |
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* |
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* @return string[] |
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*/ |
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protected function removeBOM(array $row, int $bom_length, string $enclosure): array |
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{ |
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if (0 == $bom_length) { |
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return $row; |
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} |
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$row[0] = mb_substr($row[0], $bom_length); |
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if ($enclosure == mb_substr($row[0], 0, 1) && $enclosure == mb_substr($row[0], -1, 1)) { |
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$row[0] = mb_substr($row[0], 1, -1); |
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} |
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return $row; |
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} |
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} |
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thephpleague /
csv
