57 lines
1.3 KiB
PHP
57 lines
1.3 KiB
PHP
<?php
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namespace Guzzle\Iterator;
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/**
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* Pulls out chunks from an inner iterator and yields the chunks as arrays
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*/
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class ChunkedIterator extends \IteratorIterator
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{
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/** @var int Size of each chunk */
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protected $chunkSize;
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/** @var array Current chunk */
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protected $chunk;
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/**
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* @param \Traversable $iterator Traversable iterator
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* @param int $chunkSize Size to make each chunk
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* @throws \InvalidArgumentException
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*/
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public function __construct(\Traversable $iterator, $chunkSize)
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{
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$chunkSize = (int) $chunkSize;
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if ($chunkSize < 0 ) {
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throw new \InvalidArgumentException("The chunk size must be equal or greater than zero; $chunkSize given");
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}
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parent::__construct($iterator);
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$this->chunkSize = $chunkSize;
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}
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public function rewind()
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{
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parent::rewind();
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$this->next();
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}
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public function next()
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{
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$this->chunk = array();
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for ($i = 0; $i < $this->chunkSize && parent::valid(); $i++) {
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$this->chunk[] = parent::current();
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parent::next();
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}
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}
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public function current()
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{
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return $this->chunk;
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}
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public function valid()
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{
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return (bool) $this->chunk;
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}
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}
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