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71 lines
1.5 KiB
71 lines
1.5 KiB
<?php
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declare(strict_types=1);
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namespace ZipStream;
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class DeflateStream extends Stream
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{
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protected $filter;
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/**
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* @var Option\File
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*/
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protected $options;
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/**
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* Rewind stream
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*
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* @return void
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*/
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public function rewind(): void
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{
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// deflate filter needs to be removed before rewind
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if ($this->filter) {
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$this->removeDeflateFilter();
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$this->seek(0);
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$this->addDeflateFilter($this->options);
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} else {
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rewind($this->stream);
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}
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}
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/**
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* Remove the deflate filter
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*
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* @return void
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*/
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public function removeDeflateFilter(): void
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{
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if (!$this->filter) {
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return;
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}
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stream_filter_remove($this->filter);
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$this->filter = null;
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}
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/**
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* Add a deflate filter
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*
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* @param Option\File $options
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* @return void
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*/
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public function addDeflateFilter(Option\File $options): void
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{
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$this->options = $options;
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// parameter 4 for stream_filter_append expects array
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// so we convert the option object in an array
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$optionsArr = [
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'comment' => $options->getComment(),
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'method' => $options->getMethod(),
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'deflateLevel' => $options->getDeflateLevel(),
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'time' => $options->getTime(),
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];
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$this->filter = stream_filter_append(
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$this->stream,
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'zlib.deflate',
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STREAM_FILTER_READ,
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$optionsArr
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);
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}
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}
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