/**
* return current position
*
* @return int
* @throws \LogicException in case the stream was already closed
* @throws \stubbles\streams\StreamException
*/
public function tell() : int
{
if (null === $this->handle) {
throw new \LogicException('No position available for closed input stream');
}
$position = @ftell($this->handle);
if (false === $position) {
throw new StreamException('Can not read current position in php://input: ' . lastErrorMessage('unknown error'));
}
return $position;
}
/**
* construct class from a file
*
* @api
* @param string $propertiesFile full path to file containing properties
* @return \stubbles\values\Properties
* @throws \InvalidArgumentException if file can not be found or is not readable
* @throws \UnexpectedValueException if file contains errors and can not be parsed
*/
public static function fromFile(string $propertiesFile) : self
{
if (!file_exists($propertiesFile) || !is_readable($propertiesFile)) {
throw new \InvalidArgumentException('Property file ' . $propertiesFile . ' not found');
}
$propertyData = @parse_ini_file($propertiesFile, true);
if (false === $propertyData) {
throw new \UnexpectedValueException('Property file at ' . $propertiesFile . ' contains errors and can not be parsed: ' . lastErrorMessage()->value());
}
return new static($propertyData);
}
/**
* writes given bytes
*
* @param string $bytes
* @return int amount of written bytes
* @throws \LogicException
* @throws \stubbles\streams\StreamException
*/
public function write(string $bytes) : int
{
if (null === $this->handle) {
throw new \LogicException('Can not write to closed output stream.');
}
$length = @fwrite($this->handle, $bytes);
if (false === $length) {
throw new StreamException('Can not write to output stream:' . lastErrorMessage('unknown error'));
}
return $length;
}
/**
* do actual read
*
* @param string $read function to use for reading from handle
* @param int $length max amount of bytes to read
* @return string
* @throws \LogicException
* @throws \stubbles\streams\StreamException
*/
private function doRead(string $read, int $length) : string
{
if (null === $this->handle) {
throw new \LogicException('Can not read from closed input stream.');
}
$data = @$read($this->handle, $length);
if (false === $data) {
$error = lastErrorMessage('unknown error');
if (!@feof($this->handle)) {
throw new StreamException('Can not read from input stream: ' . $error);
}
return '';
}
return $data;
}
