/**
* @param In $inputStream
* @param bool $keepCrlf If true, the line ending CRLF will be returned in the string
* @param int $offset An offset tracker for the stream
* @param int $maxLineLength The max line length. If it is reached, an exception will be thrown
* @return string
*
* @throws \Avalonia\Component\Message\Exception\MapperInvalidDataException If the line doesn't end with a CRLF, or if $maxLineLength is reached (if EOF or unix EOL is found)
* @throws \Avalonia\Component\Message\Exception\MapperMaxLineLengthException If the line isn't ended before $maxLineLength
*
* Read an HTTP line
*/
protected function readHttpLine(In $inputStream, bool $keepCrlf = false, int &$offset = null, int $maxLineLength = self::DEFAULT_MAX_LINE_LENGTH) : string
{
$buffer = '';
$lastChar = '';
$bufferLength = 0;
$offset = $offset ?: 0;
do {
if ($inputStream->eof()) {
throw (new MapperInvalidDataEofFoundException("The given line has no end. Found EOF before CRLF."))->setRemainingBufferData($buffer);
}
if ($maxLineLength <= $bufferLength) {
throw new MapperMaxLineLengthException("Http line max length reached.");
}
$char = $inputStream->readCharacter();
$buffer .= $char;
$bufferLength++;
$offset++;
if (static::LF === $char) {
if (static::CR !== $lastChar) {
throw new MapperInvalidDataException("The given line ends with a LF, not with a CRLF");
}
if (!$keepCrlf) {
$buffer = substr($buffer, 0, -2);
}
return $buffer;
}
$lastChar = $char;
} while (true);
}
