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File Name : Arrays.php

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Utils;

use JetBrains\PhpStorm\Language;
use Nette;
use function is_array, is_int, is_object, count;

/**
 * Array tools library.
 */
class Arrays
{
	use Nette\StaticClass;

/**
	 * Returns item from array. If it does not exist, it throws an exception, unless a default value is set.
	 * @template T
	 * @param  array<T>  $array
	 * @param  array-key|array-key[]  $key
	 * @param  ?T  $default
	 * @return ?T
	 * @throws Nette\InvalidArgumentException if item does not exist and default value is not provided
	 */
	public static function get(array $array, string|int|array $key, mixed $default = null): mixed
	{
		foreach (is_array($key) ? $key : [$key] as $k) {
			if (is_array($array) && array_key_exists($k, $array)) {
				$array = $array[$k];
			} else {
				if (func_num_args() < 3) {
					throw new Nette\InvalidArgumentException("Missing item '$k'.");
				}

return $default;
			}
		}

return $array;
	}

/**
	 * Returns reference to array item. If the index does not exist, new one is created with value null.
	 * @template T
	 * @param  array<T>  $array
	 * @param  array-key|array-key[]  $key
	 * @return ?T
	 * @throws Nette\InvalidArgumentException if traversed item is not an array
	 */
	public static function &getRef(array &$array, string|int|array $key): mixed
	{
		foreach (is_array($key) ? $key : [$key] as $k) {
			if (is_array($array) || $array === null) {
				$array = &$array[$k];
			} else {
				throw new Nette\InvalidArgumentException('Traversed item is not an array.');
			}
		}

return $array;
	}

/**
	 * Recursively merges two fields. It is useful, for example, for merging tree structures. It behaves as
	 * the + operator for array, ie. it adds a key/value pair from the second array to the first one and retains
	 * the value from the first array in the case of a key collision.
	 * @template T1
	 * @template T2
	 * @param  array<T1>  $array1
	 * @param  array<T2>  $array2
	 * @return array<T1|T2>
	 */
	public static function mergeTree(array $array1, array $array2): array
	{
		$res = $array1 + $array2;
		foreach (array_intersect_key($array1, $array2) as $k => $v) {
			if (is_array($v) && is_array($array2[$k])) {
				$res[$k] = self::mergeTree($v, $array2[$k]);
			}
		}

return $res;
	}

/**
	 * Returns zero-indexed position of given array key. Returns null if key is not found.
	 */
	public static function getKeyOffset(array $array, string|int $key): ?int
	{
		return Helpers::falseToNull(array_search(self::toKey($key), array_keys($array), strict: true));
	}

/**
	 * @deprecated  use  getKeyOffset()
	 */
	public static function searchKey(array $array, $key): ?int
	{
		return self::getKeyOffset($array, $key);
	}

/**
	 * Tests an array for the presence of value.
	 */
	public static function contains(array $array, mixed $value): bool
	{
		return in_array($value, $array, true);
	}

/**
	 * Returns the first item (matching the specified predicate if given). If there is no such item, it returns result of invoking $else or null.
	 * The $predicate has the signature `function (mixed $value, int|string $key, array $array): bool`.
	 * @template T
	 * @param  array<T>  $array
	 * @return ?T
	 */
	public static function first(array $array, ?callable $predicate = null, ?callable $else = null): mixed
	{
		$key = self::firstKey($array, $predicate);
		return $key === null
			? ($else ? $else() : null)
			: $array[$key];
	}

/**
	 * Returns the last item (matching the specified predicate if given). If there is no such item, it returns result of invoking $else or null.
	 * The $predicate has the signature `function (mixed $value, int|string $key, array $array): bool`.
	 * @template T
	 * @param  array<T>  $array
	 * @return ?T
	 */
	public static function last(array $array, ?callable $predicate = null, ?callable $else = null): mixed
	{
		$key = self::lastKey($array, $predicate);
		return $key === null
			? ($else ? $else() : null)
			: $array[$key];
	}

/**
	 * Returns the key of first item (matching the specified predicate if given) or null if there is no such item.
	 * The $predicate has the signature `function (mixed $value, int|string $key, array $array): bool`.
	 */
	public static function firstKey(array $array, ?callable $predicate = null): int|string|null
	{
		if (!$predicate) {
			return array_key_first($array);
		}
		foreach ($array as $k => $v) {
			if ($predicate($v, $k, $array)) {
				return $k;
			}
		}
		return null;
	}

/**
	 * Returns the key of last item (matching the specified predicate if given) or null if there is no such item.
	 * The $predicate has the signature `function (mixed $value, int|string $key, array $array): bool`.
	 */
	public static function lastKey(array $array, ?callable $predicate = null): int|string|null
	{
		return $predicate
			? self::firstKey(array_reverse($array, preserve_keys: true), $predicate)
			: array_key_last($array);
	}

/**
	 * Inserts the contents of the $inserted array into the $array immediately after the $key.
	 * If $key is null (or does not exist), it is inserted at the beginning.
	 */
	public static function insertBefore(array &$array, string|int|null $key, array $inserted): void
	{
		$offset = $key === null ? 0 : (int) self::getKeyOffset($array, $key);
		$array = array_slice($array, 0, $offset, preserve_keys: true)
			+ $inserted
			+ array_slice($array, $offset, count($array), preserve_keys: true);
	}

/**
	 * Inserts the contents of the $inserted array into the $array before the $key.
	 * If $key is null (or does not exist), it is inserted at the end.
	 */
	public static function insertAfter(array &$array, string|int|null $key, array $inserted): void
	{
		if ($key === null || ($offset = self::getKeyOffset($array, $key)) === null) {
			$offset = count($array) - 1;
		}

$array = array_slice($array, 0, $offset + 1, preserve_keys: true)
			+ $inserted
			+ array_slice($array, $offset + 1, count($array), preserve_keys: true);
	}

/**
	 * Renames key in array.
	 */
	public static function renameKey(array &$array, string|int $oldKey, string|int $newKey): bool
	{
		$offset = self::getKeyOffset($array, $oldKey);
		if ($offset === null) {
			return false;
		}

$val = &$array[$oldKey];
		$keys = array_keys($array);
		$keys[$offset] = $newKey;
		$array = array_combine($keys, $array);
		$array[$newKey] = &$val;
		return true;
	}

/**
	 * Returns only those array items, which matches a regular expression $pattern.
	 * @param  string[]  $array
	 * @return string[]
	 */
	public static function grep(
		array $array,
		#[Language('RegExp')]
		string $pattern,
		bool|int $invert = false,
	): array
	{
		$flags = $invert ? PREG_GREP_INVERT : 0;
		return Strings::pcre('preg_grep', [$pattern, $array, $flags]);
	}

/**
	 * Transforms multidimensional array to flat array.
	 */
	public static function flatten(array $array, bool $preserveKeys = false): array
	{
		$res = [];
		$cb = $preserveKeys
			? function ($v, $k) use (&$res): void { $res[$k] = $v; }
			: function ($v) use (&$res): void { $res[] = $v; };
		array_walk_recursive($array, $cb);
		return $res;
	}

/**
	 * Checks if the array is indexed in ascending order of numeric keys from zero, a.k.a list.
	 * @return ($value is list ? true : false)
	 */
	public static function isList(mixed $value): bool
	{
		return is_array($value) && (PHP_VERSION_ID < 80100
			? !$value || array_keys($value) === range(0, count($value) - 1)
			: array_is_list($value)
		);
	}

/**
	 * Reformats table to associative tree. Path looks like 'field|field[]field->field=field'.
	 * @param  string|string[]  $path
	 */
	public static function associate(array $array, $path): array|\stdClass
	{
		$parts = is_array($path)
			? $path
			: preg_split('#(\[\]|->|=|\|)#', $path, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);

if (!$parts || $parts === ['->'] || $parts[0] === '=' || $parts[0] === '|') {
			throw new Nette\InvalidArgumentException("Invalid path '$path'.");
		}

$res = $parts[0] === '->' ? new \stdClass : [];

foreach ($array as $rowOrig) {
			$row = (array) $rowOrig;
			$x = &$res;

for ($i = 0; $i < count($parts); $i++) {
				$part = $parts[$i];
				if ($part === '[]') {
					$x = &$x[];

} elseif ($part === '=') {
					if (isset($parts[++$i])) {
						$x = $row[$parts[$i]];
						$row = null;
					}
				} elseif ($part === '->') {
					if (isset($parts[++$i])) {
						if ($x === null) {
							$x = new \stdClass;
						}

$x = &$x->{$row[$parts[$i]]};
					} else {
						$row = is_object($rowOrig) ? $rowOrig : (object) $row;
					}
				} elseif ($part !== '|') {
					$x = &$x[(string) $row[$part]];
				}
			}

if ($x === null) {
				$x = $row;
			}
		}

return $res;
	}

/**
	 * Normalizes array to associative array. Replace numeric keys with their values, the new value will be $filling.
	 */
	public static function normalize(array $array, mixed $filling = null): array
	{
		$res = [];
		foreach ($array as $k => $v) {
			$res[is_int($k) ? $v : $k] = is_int($k) ? $filling : $v;
		}

return $res;
	}

/**
	 * Returns and removes the value of an item from an array. If it does not exist, it throws an exception,
	 * or returns $default, if provided.
	 * @template T
	 * @param  array<T>  $array
	 * @param  ?T  $default
	 * @return ?T
	 * @throws Nette\InvalidArgumentException if item does not exist and default value is not provided
	 */
	public static function pick(array &$array, string|int $key, mixed $default = null): mixed
	{
		if (array_key_exists($key, $array)) {
			$value = $array[$key];
			unset($array[$key]);
			return $value;

} elseif (func_num_args() < 3) {
			throw new Nette\InvalidArgumentException("Missing item '$key'.");

} else {
			return $default;
		}
	}

/**
	 * Tests whether at least one element in the array passes the test implemented by the provided function,
	 * which has the signature `function ($value, $key, array $array): bool`.
	 * @template K
	 * @template V
	 * @param  iterable<K, V> $array
	 * @param  callable(V, K, ($array is array ? array<K, V> : iterable<K, V>)): bool $predicate
	 */
	public static function some(iterable $array, callable $predicate): bool
	{
		foreach ($array as $k => $v) {
			if ($predicate($v, $k, $array)) {
				return true;
			}
		}

return false;
	}

/**
	 * Tests whether all elements in the array pass the test implemented by the provided function,
	 * which has the signature `function ($value, $key, array $array): bool`.
	 * @template K
	 * @template V
	 * @param  iterable<K, V> $array
	 * @param  callable(V, K, ($array is array ? array<K, V> : iterable<K, V>)): bool $predicate
	 */
	public static function every(iterable $array, callable $predicate): bool
	{
		foreach ($array as $k => $v) {
			if (!$predicate($v, $k, $array)) {
				return false;
			}
		}

return true;
	}

/**
	 * Returns a new array containing all key-value pairs matching the given $predicate.
	 * The callback has the signature `function (mixed $value, int|string $key, array $array): bool`.
	 * @template K of array-key
	 * @template V
	 * @param  array<K, V> $array
	 * @param  callable(V, K, array<K, V>): bool $predicate
	 * @return array<K, V>
	 */
	public static function filter(array $array, callable $predicate): array
	{
		$res = [];
		foreach ($array as $k => $v) {
			if ($predicate($v, $k, $array)) {
				$res[$k] = $v;
			}
		}
		return $res;
	}

/**
	 * Returns an array containing the original keys and results of applying the given transform function to each element.
	 * The function has signature `function ($value, $key, array $array): mixed`.
	 * @template K of array-key
	 * @template V
	 * @template R
	 * @param  iterable<K, V> $array
	 * @param  callable(V, K, ($array is array ? array<K, V> : iterable<K, V>)): R $transformer
	 * @return array<K, R>
	 */
	public static function map(iterable $array, callable $transformer): array
	{
		$res = [];
		foreach ($array as $k => $v) {
			$res[$k] = $transformer($v, $k, $array);
		}

return $res;
	}

/**
	 * Invokes all callbacks and returns array of results.
	 * @param  callable[]  $callbacks
	 */
	public static function invoke(iterable $callbacks, ...$args): array
	{
		$res = [];
		foreach ($callbacks as $k => $cb) {
			$res[$k] = $cb(...$args);
		}

return $res;
	}

/**
	 * Invokes method on every object in an array and returns array of results.
	 * @param  object[]  $objects
	 */
	public static function invokeMethod(iterable $objects, string $method, ...$args): array
	{
		$res = [];
		foreach ($objects as $k => $obj) {
			$res[$k] = $obj->$method(...$args);
		}

return $res;
	}

/**
	 * Copies the elements of the $array array to the $object object and then returns it.
	 * @template T of object
	 * @param  T  $object
	 * @return T
	 */
	public static function toObject(iterable $array, object $object): object
	{
		foreach ($array as $k => $v) {
			$object->$k = $v;
		}

return $object;
	}

/**
	 * Converts value to array key.
	 */
	public static function toKey(mixed $value): int|string
	{
		return key([$value => null]);
	}

/**
	 * Returns copy of the $array where every item is converted to string
	 * and prefixed by $prefix and suffixed by $suffix.
	 * @param  string[]  $array
	 * @return string[]
	 */
	public static function wrap(array $array, string $prefix = '', string $suffix = ''): array
	{
		$res = [];
		foreach ($array as $k => $v) {
			$res[$k] = $prefix . $v . $suffix;
		}

return $res;
	}
}

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	forge/forge	0775	2024-01-17 04:50:36
..	dir	-	forge/forge	0775	2024-01-17 04:50:36
ArrayHash.php	text/x-php	1.86 KB	forge/forge	0664	2024-01-17 04:50:36
ArrayList.php	text/x-php	2.61 KB	forge/forge	0664	2024-01-17 04:50:36
Arrays.php	text/x-php	13.26 KB	forge/forge	0664	2024-01-17 04:50:36
Callback.php	text/x-php	3.48 KB	forge/forge	0664	2024-01-17 04:50:36
DateTime.php	text/x-php	2.85 KB	forge/forge	0664	2024-01-17 04:50:36
FileInfo.php	text/x-php	1.26 KB	forge/forge	0664	2024-01-17 04:50:36
FileSystem.php	text/x-php	9.07 KB	forge/forge	0664	2024-01-17 04:50:36
Finder.php	text/x-php	13.05 KB	forge/forge	0664	2024-01-17 04:50:36
Floats.php	text/x-php	2.07 KB	forge/forge	0664	2024-01-17 04:50:36
Helpers.php	text/x-php	2.5 KB	forge/forge	0664	2024-01-17 04:50:36
Html.php	text/x-php	19.03 KB	forge/forge	0664	2024-01-17 04:50:36
Image.php	text/x-php	24.04 KB	forge/forge	0664	2024-01-17 04:50:36
ImageColor.php	text/x-php	1.6 KB	forge/forge	0664	2024-01-17 04:50:36
ImageType.php	text/x-php	421 B	forge/forge	0664	2024-01-17 04:50:36
Iterables.php	text/x-php	4.01 KB	forge/forge	0664	2024-01-17 04:50:36
Json.php	text/x-php	2.22 KB	forge/forge	0664	2024-01-17 04:50:36
ObjectHelpers.php	text/x-php	6.85 KB	forge/forge	0664	2024-01-17 04:50:36
Paginator.php	text/x-php	4.38 KB	forge/forge	0664	2024-01-17 04:50:36
Random.php	text/x-php	1.2 KB	forge/forge	0664	2024-01-17 04:50:36
Reflection.php	text/x-php	8.37 KB	forge/forge	0664	2024-01-17 04:50:36
ReflectionMethod.php	text/x-php	812 B	forge/forge	0664	2024-01-17 04:50:36
Strings.php	text/x-php	21.71 KB	forge/forge	0664	2024-01-17 04:50:36
Type.php	text/x-php	6.36 KB	forge/forge	0664	2024-01-17 04:50:36
Validators.php	text/x-php	10.41 KB	forge/forge	0664	2024-01-17 04:50:36
exceptions.php	text/x-php	775 B	forge/forge	0664	2024-01-17 04:50:36

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