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<?php |
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/** |
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* This file is part of GameQ. |
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* |
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* GameQ is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* GameQ is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace GameQ\Helpers\Arr; |
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use ArrayIterator; |
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use Closure; |
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use RecursiveArrayIterator; |
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use RecursiveIteratorIterator; |
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/** |
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* This helper contains functions to work with arrays. |
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* |
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* @mixin \GameQ\Helpers\Arr |
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* |
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* @package GameQ\Helpers |
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*/ |
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trait Recursively |
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{ |
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/** |
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* This function is responsible for handling behaivour specific to PHP versions before 8.1. |
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* |
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* @param array &$data |
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* @param RecursiveIteratorIterator $recursiveIterator |
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* @param RecursiveArrayIterator $iterator |
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* @param Closure $callback |
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* @return void |
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*/ |
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protected static function handleArrayIteratorCopyOrReference( |
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array &$data, |
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RecursiveIteratorIterator $recursiveIterator, |
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RecursiveArrayIterator $iterator, |
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Closure $callback |
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) { |
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/* ArrayIterator before PHP 8.1 does use a copy instead of reference */ |
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if (PHP_VERSION_ID < 80100) { |
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/* Hash the current state of the iterator */ |
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$hashes = static::hashes((array) $iterator); |
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/* Continue with the provided callback */ |
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$callback(); |
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/* Determine if the current iterator has been modified */ |
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if (! empty($diff = array_diff_assoc(static::hashes((array) $iterator), $hashes))) { |
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/* Determine path to the current iterator */ |
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$path = []; |
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for ($depth = 0; $depth < $recursiveIterator->getDepth(); $depth++) { |
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$path[] = $recursiveIterator->getSubIterator($depth)->key(); |
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} |
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/* Process all modified values */ |
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foreach (array_keys($diff) as $modified) { |
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/* Write the modified value to the original array */ |
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static::set($data, array_merge($path, [$modified]), $iterator->offsetGet($modified)); |
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} |
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} |
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} else { |
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/* There is no need to write back any changes when ArrayIterator does use a reference */ |
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$callback(); |
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} |
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} |
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protected static function getArrayIteratorCopyOrReference(array &$data, ArrayIterator $arrayIterator) |
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{ |
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if (PHP_VERSION_ID < 80100) { |
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/* Return the actual array reference */ |
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return $data; |
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} else { |
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/* Return the ArrayIterator's internal reference */ |
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return $arrayIterator->getArrayCopy(); |
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} |
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} |
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} |
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Austinb /
GameQ
