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84 lines
1.9 KiB
84 lines
1.9 KiB
<?php
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declare(strict_types=1);
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namespace League\Flysystem;
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use ArrayIterator;
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use Generator;
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use IteratorAggregate;
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use Traversable;
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/**
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* @template T
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*/
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class DirectoryListing implements IteratorAggregate
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{
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/**
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* @var iterable<T>
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*/
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private $listing;
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/**
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* @param iterable<T> $listing
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*/
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public function __construct(iterable $listing)
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{
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$this->listing = $listing;
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}
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public function filter(callable $filter): DirectoryListing
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{
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$generator = (static function (iterable $listing) use ($filter): Generator {
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foreach ($listing as $item) {
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if ($filter($item)) {
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yield $item;
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}
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}
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})($this->listing);
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return new DirectoryListing($generator);
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}
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public function map(callable $mapper): DirectoryListing
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{
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$generator = (static function (iterable $listing) use ($mapper): Generator {
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foreach ($listing as $item) {
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yield $mapper($item);
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}
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})($this->listing);
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return new DirectoryListing($generator);
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}
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public function sortByPath(): DirectoryListing
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{
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$listing = $this->toArray();
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usort($listing, function (StorageAttributes $a, StorageAttributes $b) {
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return $a->path() <=> $b->path();
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});
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return new DirectoryListing($listing);
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}
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/**
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* @return Traversable<T>
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*/
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public function getIterator(): Traversable
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{
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return $this->listing instanceof Traversable
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? $this->listing
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: new ArrayIterator($this->listing);
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}
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/**
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* @return T[]
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*/
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public function toArray(): array
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{
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return $this->listing instanceof Traversable
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? iterator_to_array($this->listing, false)
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: (array) $this->listing;
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}
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}
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