diff options
author | Andrew Dolgov <[email protected]> | 2023-10-20 17:12:29 +0300 |
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committer | Andrew Dolgov <[email protected]> | 2023-10-20 21:13:39 +0300 |
commit | cdd7ad020e165fe680703b6d3319b908b682fb7a (patch) | |
tree | b51eb09b7b4587e8fbc5624ac8d88d28cfcd0b04 /vendor/guzzlehttp/psr7/src/BufferStream.php | |
parent | 45a9ff0c88cbd33892ff16ab837e9059937d656e (diff) |
jaeger-client -> opentelemetry
Diffstat (limited to 'vendor/guzzlehttp/psr7/src/BufferStream.php')
-rw-r--r-- | vendor/guzzlehttp/psr7/src/BufferStream.php | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/vendor/guzzlehttp/psr7/src/BufferStream.php b/vendor/guzzlehttp/psr7/src/BufferStream.php new file mode 100644 index 000000000..2b0eb77be --- /dev/null +++ b/vendor/guzzlehttp/psr7/src/BufferStream.php @@ -0,0 +1,147 @@ +<?php + +declare(strict_types=1); + +namespace GuzzleHttp\Psr7; + +use Psr\Http\Message\StreamInterface; + +/** + * Provides a buffer stream that can be written to to fill a buffer, and read + * from to remove bytes from the buffer. + * + * This stream returns a "hwm" metadata value that tells upstream consumers + * what the configured high water mark of the stream is, or the maximum + * preferred size of the buffer. + */ +final class BufferStream implements StreamInterface +{ + /** @var int */ + private $hwm; + + /** @var string */ + private $buffer = ''; + + /** + * @param int $hwm High water mark, representing the preferred maximum + * buffer size. If the size of the buffer exceeds the high + * water mark, then calls to write will continue to succeed + * but will return 0 to inform writers to slow down + * until the buffer has been drained by reading from it. + */ + public function __construct(int $hwm = 16384) + { + $this->hwm = $hwm; + } + + public function __toString(): string + { + return $this->getContents(); + } + + public function getContents(): string + { + $buffer = $this->buffer; + $this->buffer = ''; + + return $buffer; + } + + public function close(): void + { + $this->buffer = ''; + } + + public function detach() + { + $this->close(); + + return null; + } + + public function getSize(): ?int + { + return strlen($this->buffer); + } + + public function isReadable(): bool + { + return true; + } + + public function isWritable(): bool + { + return true; + } + + public function isSeekable(): bool + { + return false; + } + + public function rewind(): void + { + $this->seek(0); + } + + public function seek($offset, $whence = SEEK_SET): void + { + throw new \RuntimeException('Cannot seek a BufferStream'); + } + + public function eof(): bool + { + return strlen($this->buffer) === 0; + } + + public function tell(): int + { + throw new \RuntimeException('Cannot determine the position of a BufferStream'); + } + + /** + * Reads data from the buffer. + */ + public function read($length): string + { + $currentLength = strlen($this->buffer); + + if ($length >= $currentLength) { + // No need to slice the buffer because we don't have enough data. + $result = $this->buffer; + $this->buffer = ''; + } else { + // Slice up the result to provide a subset of the buffer. + $result = substr($this->buffer, 0, $length); + $this->buffer = substr($this->buffer, $length); + } + + return $result; + } + + /** + * Writes data to the buffer. + */ + public function write($string): int + { + $this->buffer .= $string; + + if (strlen($this->buffer) >= $this->hwm) { + return 0; + } + + return strlen($string); + } + + /** + * @return mixed + */ + public function getMetadata($key = null) + { + if ($key === 'hwm') { + return $this->hwm; + } + + return $key ? null : []; + } +} |