‪TYPO3CMS  9.5
•All Classes Namespaces Files Functions Variables Pages
PermutationUtility.php
Go to the documentation of this file.
1 <?php
2 declare(strict_types = 1);
3 namespace ‪TYPO3\CMS\Core\Utility;
4 
5 /*
6  * This file is part of the TYPO3 CMS project.
7  *
8  * It is free software; you can redistribute it and/or modify it under
9  * the terms of the GNU General Public License, either version 2
10  * of the License, or any later version.
11  *
12  * For the full copyright and license information, please read the
13  * LICENSE.txt file that was distributed with this source code.
14  *
15  * The TYPO3 project - inspiring people to share!
16  */
17 
21 class ‪PermutationUtility
22 {
34  public static function ‪meltStringItems(array $payload, string $previousResult = ''): array
35  {
36  $results = [];
37  $items = static::nextItems($payload);
38  foreach ($items as $item) {
39  $resultItem = $previousResult . static::asString($item);
40  if (!empty($payload)) {
41  $results = array_merge(
42  $results,
43  static::meltStringItems($payload, $resultItem)
44  );
45  continue;
46  }
47  $results[] = $resultItem;
48  }
49  return $results;
50  }
51 
64  public static function ‪meltArrayItems(array $payload, array $previousResult = []): array
65  {
66  $results = [];
67  $items = static::nextItems($payload);
68  foreach ($items as $item) {
69  $resultItems = $previousResult;
70  $resultItems[] = $item;
71  if (!empty($payload)) {
72  $results = array_merge(
73  $results,
74  static::meltArrayItems($payload, $resultItems)
75  );
76  continue;
77  }
78  $results[] = $resultItems;
79  }
80  return $results;
81  }
82 
83  protected static function ‪nextItems(array &$payload): iterable
84  {
85  $items = array_shift($payload);
86  if (is_iterable($items)) {
87  return $items;
88  }
89  throw new \LogicException(
90  sprintf('Expected iterable, got %s', gettype($items)),
91  1578164101
92  );
93  }
94 
95  protected static function ‪asString($item): string
96  {
97  if (is_string($item)) {
98  return $item;
99  }
100  if (is_object($item) && method_exists($item, '__toString')) {
101  return (string)$item;
102  }
103  throw new \LogicException(
104  sprintf('Expected string, got %s', gettype($item)),
105  1578164102
106  );
107  }
108 }
‪TYPO3\CMS\Core\Utility\PermutationUtility\meltStringItems
‪static array meltStringItems(array $payload, string $previousResult='')
Definition: PermutationUtility.php:34
‪TYPO3\CMS\Core\Utility
Definition: ArrayUtility.php:2
‪TYPO3\CMS\Core\Utility\PermutationUtility\nextItems
‪static nextItems(array &$payload)
Definition: PermutationUtility.php:83
‪TYPO3\CMS\Core\Utility\PermutationUtility
Definition: PermutationUtility.php:22
‪TYPO3\CMS\Core\Utility\PermutationUtility\asString
‪static asString($item)
Definition: PermutationUtility.php:95
‪TYPO3\CMS\Core\Utility\PermutationUtility\meltArrayItems
‪static array meltArrayItems(array $payload, array $previousResult=[])
Definition: PermutationUtility.php:64