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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 2015-2018 LibreWorks contributors |
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* @license Apache-2.0 |
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*/ |
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namespace Caridea\Filter; |
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/** |
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* Go get her, Ray! |
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* |
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* This class contains some array-related filters. |
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*/ |
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class Arrays |
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{ |
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/** |
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* Coerces a value into an array or throws an exception. |
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* |
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* @param mixed $var - The value to coerce |
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* @return array The converted array |
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* @throws \InvalidArgumentException if the value could not be coerced |
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*/ |
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public static function coerce($var): array |
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{ |
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if (is_array($var)) { |
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return $var; |
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} elseif ($var instanceof \Traversable) { |
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return iterator_to_array($var, true); |
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} elseif ($var === null || is_scalar($var)) { |
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return (array) $var; |
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} |
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throw new \InvalidArgumentException("Could not convert to array: " . gettype($var)); |
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} |
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/** |
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* Creates a new regular expression split filter. |
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* |
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* @param string $pattern The search pattern |
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* @return \Closure The created filter |
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*/ |
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public static function split(string $pattern): \Closure |
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{ |
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return function ($value) use ($pattern) { |
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return preg_split($pattern, Strings::coerce($value)); |
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}; |
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} |
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/** |
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* Creates a new explode filter. |
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* |
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* @param string $needle The search string |
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* @return \Closure The created filter |
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*/ |
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public static function explode(string $needle): \Closure |
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{ |
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return function ($value) use ($needle) { |
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return explode($needle, Strings::coerce($value)); |
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}; |
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} |
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/** |
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* Creates a new array slice filter. |
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* |
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* @param int $length The maximum array length |
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* @return \Closure The created filter |
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*/ |
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public static function slice(int $length): \Closure |
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{ |
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return function ($value) use ($length) { |
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return array_slice(Arrays::coerce($value), 0, $length); |
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}; |
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} |
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/** |
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* Creates a new implode filter. |
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* |
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* @param string $joiner The glue string |
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* @return \Closure The created filter |
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*/ |
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public static function join(string $joiner): \Closure |
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{ |
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return function ($value) use ($joiner) { |
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return implode($joiner, Arrays::coerce($value)); |
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}; |
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} |
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} |
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libreworks /
caridea-filter
