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<?php |
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declare(strict_types=1); |
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/** |
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* Caridea |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not |
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* use this file except in compliance with the License. You may obtain a copy of |
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* the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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* License for the specific language governing permissions and limitations under |
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* the License. |
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* |
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* @copyright 2015 LibreWorks contributors |
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* @license http://opensource.org/licenses/Apache-2.0 Apache 2.0 License |
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*/ |
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namespace Caridea\Filter; |
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/** |
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* That's why I say hey man, nice shot. |
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* |
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* This class contains several chains of functions which sanitize values. |
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*/ |
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class Filter implements Reducer |
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{ |
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/** |
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* @var array<string,\Caridea\Filter\Chain> - The filters keyed by field |
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*/ |
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protected $chains = []; |
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/** |
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* @var array<\Caridea\Filter\Reducer> - The |
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*/ |
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protected $reducers = []; |
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/** |
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* Creates a new Filter (but you're probably better off using `Builder`). |
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* |
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* Any `Chain`s supplied to this method will be cloned. Modifications to the |
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* originals will not appear once a `Filter` is constructed. |
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* |
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* @param array<string,\Caridea\Filter\Chain> $chains - The filters keyed by field |
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* @param array<\Caridea\Filter\Reducer> $reducers - Any Reducer filters to include |
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*/ |
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public function __construct(array $chains, array $reducers = []) |
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{ |
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foreach ($chains as $k => $f) { |
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if (!($f instanceof Chain)) { |
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throw new \InvalidArgumentException("Must be an instance of Chain"); |
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} |
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$this->chains[$k] = clone $f; |
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} |
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foreach ($reducers as $k => $f) { |
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if (!($f instanceof Reducer)) { |
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throw new \InvalidArgumentException("Must be an instance of Reducer"); |
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} |
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$this->reducers[$k] = $f; |
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} |
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} |
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/** |
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* Runs the array filter. |
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* |
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* Chains are run in the order in which they were inserted. Reducers are run |
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* afterward and operate on the *original* values, not the filtered ones. |
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* |
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* @param array<string,mixed> $values The values to filter |
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* @return array The filtered array |
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*/ |
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public function __invoke(array $values): array |
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{ |
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$out = []; |
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foreach ($this->chains as $field => $chain) { |
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if (array_key_exists($field, $values) || $chain->isRequired()) { |
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$out[$field] = $chain($values[$field] ?? null); |
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} |
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} |
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foreach ($this->reducers as $multi) { |
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$out = array_merge($out, $multi($values)); |
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} |
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return $out; |
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} |
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} |
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