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<?php |
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namespace RouterOS\Streams; |
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use RouterOS\Interfaces\StreamInterface; |
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use RouterOS\Exceptions\StreamException; |
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/** |
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* class ResourceStream |
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* |
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* Stream using a resource (socket, file, pipe etc.) |
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* |
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* @package RouterOS |
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* @since 0.9 |
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*/ |
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class ResourceStream implements StreamInterface |
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{ |
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protected $stream; |
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/** |
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* ResourceStream constructor. |
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* |
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* @param $stream |
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*/ |
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public function __construct($stream) |
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{ |
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if (!is_resource($stream)) { |
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throw new \InvalidArgumentException( |
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sprintf( |
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'Argument must be a valid resource type. %s given.', |
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gettype($stream) |
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) |
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); |
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} |
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// TODO: Should we verify the resource type? |
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$this->stream = $stream; |
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} |
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/** |
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* @param int $length |
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* @return string |
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* @throws \RouterOS\Exceptions\StreamException |
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* @throws \InvalidArgumentException |
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*/ |
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public function read(int $length): string |
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{ |
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if ($length <= 0) { |
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throw new \InvalidArgumentException('Cannot read zero ot negative count of bytes from a stream'); |
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} |
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// TODO: Ignore errors here, but why? |
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$result = @fread($this->stream, $length); |
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if (false === $result) { |
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throw new StreamException("Error reading $length bytes"); |
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} |
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return $result; |
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} |
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/** |
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* Writes a string to a stream |
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* |
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* Write $length bytes of string, if not mentioned, write all the string |
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* Must be binary safe (as fread). |
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* if $length is greater than string length, write all string and return number of writen bytes |
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* if $length os smaller than string length, remaining bytes are losts. |
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* |
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* @param string $string |
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* @param int|null $length the numer of bytes to read |
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* @return int the number of written bytes |
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* @throws \RouterOS\Exceptions\StreamException |
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*/ |
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public function write(string $string, int $length = null): int |
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{ |
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if (null === $length) { |
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$length = strlen($string); |
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} |
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// TODO: Ignore errors here, but why? |
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$result = @fwrite($this->stream, $string, $length); |
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if (false === $result) { |
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throw new StreamException("Error writing $length bytes"); |
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} |
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return $result; |
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} |
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/** |
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* Close stream connection |
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* |
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* @return void |
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* @throws \RouterOS\Exceptions\StreamException |
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*/ |
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public function close() |
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{ |
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$hasBeenClosed = false; |
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if (null !== $this->stream) { |
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$hasBeenClosed = @fclose($this->stream); |
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$this->stream = null; |
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} |
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if (false === $hasBeenClosed) { |
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throw new StreamException('Error closing stream'); |
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} |
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} |
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} |
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EvilFreelancer /
routeros-api-php
