mirror of
https://github.com/danog/byte-stream.git
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33 lines
791 B
PHP
33 lines
791 B
PHP
<?php
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namespace Amp\ByteStream;
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use Amp\Promise;
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use function Amp\call;
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// @codeCoverageIgnoreStart
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if (\strlen('…') !== 3) {
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throw new \Error(
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'The mbstring.func_overload ini setting is enabled. It must be disabled to use the stream package.'
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);
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} // @codeCoverageIgnoreEnd
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/**
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* @param \Amp\ByteStream\InputStream $source
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* @param \Amp\ByteStream\OutputStream $destination
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*
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* @return \Amp\Promise
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*/
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function pipe(InputStream $source, OutputStream $destination): Promise {
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return call(function () use ($source, $destination): \Generator {
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$written = 0;
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while (($chunk = yield $source->read()) !== null) {
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$written += \strlen($chunk);
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yield $destination->write($chunk);
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}
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return $written;
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});
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}
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