<?php
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namespace League\Flysystem\Util;
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class StreamHasher
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{
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/**
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* @var string
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*/
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private $algo;
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/**
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* StreamHasher constructor.
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*
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* @param string $algo
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*/
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public function __construct($algo)
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{
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$this->algo = $algo;
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}
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/**
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* @param resource $resource
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*
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* @return string
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*/
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public function hash($resource)
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{
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rewind($resource);
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$context = hash_init($this->algo);
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hash_update_stream($context, $resource);
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fclose($resource);
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return hash_final($context);
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}
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}
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