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<?php |
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namespace Saxulum\HttpMessage; |
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use Psr\Http\Message\StreamInterface; |
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final class SimpleStream implements StreamInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $stream = ''; |
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/** |
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* @var int |
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*/ |
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private $pointer = 0; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __toString(): string |
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{ |
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return $this->stream; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function close() |
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{ |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function detach() |
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{ |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getSize(): int |
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{ |
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return strlen($this->stream); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function tell(): int |
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{ |
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return $this->pointer; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function eof(): bool |
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{ |
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return $this->pointer + 1 === $this->getSize(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isSeekable(): bool |
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{ |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function seek($offset, $whence = SEEK_SET) |
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{ |
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if (SEEK_SET === $whence) { |
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$newPointerPosition = $offset; |
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} elseif (SEEK_CUR === $whence) { |
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$newPointerPosition = $this->pointer + $offset; |
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} elseif (SEEK_END === $whence) { |
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$newPointerPosition = $this->getSize() - 1 + $offset; |
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} else { |
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throw new \RuntimeException(sprintf('Unsupported whence %s', $whence)); |
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} |
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if ($newPointerPosition > $this->getSize() - 1) { |
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throw new \RuntimeException( |
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sprintf('Invalid offset %d, max allowed %d', $newPointerPosition, $this->getSize() - 1) |
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); |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function rewind() |
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{ |
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$this->pointer = 0; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isWritable(): bool |
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{ |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function write($string): int |
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{ |
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$stringLength = strlen($string); |
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for ($i = 0; $i < $stringLength; ++$i) { |
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$this->stream[$this->pointer] = $string[$i]; |
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++$this->pointer; |
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} |
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return $stringLength; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isReadable(): bool |
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{ |
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return !$this->eof(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function read($length): string |
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{ |
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$read = ''; |
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for ($i = 0; $i < $length; ++$i) { |
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if (isset($this->stream[$this->pointer])) { |
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$read .= $this->stream[$this->pointer]; |
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++$this->pointer; |
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} |
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} |
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return $read; |
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} |
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149
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/** |
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150
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* {@inheritdoc} |
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151
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*/ |
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152
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public function getContents(): string |
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153
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{ |
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$contents = ''; |
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$size = $this->getSize(); |
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157
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while ($this->pointer < $size) { |
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$contents .= $this->stream[$this->pointer]; |
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++$this->pointer; |
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} |
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162
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return $contents; |
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} |
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/** |
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166
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* {@inheritdoc} |
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167
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*/ |
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168
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public function getMetadata($key = null) |
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169
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{ |
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$metadata = [ |
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'timed_out' => false, |
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'blocked' => false, |
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'eof' => $this->eof(), |
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'unread_bytes' => $this->getSize() - $this->pointer - 1, |
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'mode' => 'rw', |
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'seekable' => true, |
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]; |
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if (null !== $key) { |
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return $metadata[$key] ?? null; |
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} |
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return $metadata; |
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184
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} |
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185
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} |
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186
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saxulum /
saxulum-http-message
