/**
* Calculate a hash of a Stream
*
* @param StreamInterface $stream Stream to calculate the hash for
* @param string $algo Hash algorithm (e.g. md5, crc32, etc)
* @param bool $rawOutput Whether or not to use raw output
*
* @return bool|string Returns false on failure or a hash string on success
*/
public static function getHash(StreamInterface $stream, $algo, $rawOutput = false)
{
$pos = $stream->ftell();
if (!$stream->seek(0)) {
return false;
}
$ctx = hash_init($algo);
while ($data = $stream->read(8192)) {
hash_update($ctx, $data);
}
$out = hash_final($ctx, (bool) $rawOutput);
$stream->seek($pos);
return $out;
}
/**
* Send HTTP response headers and body
*
* @return \Slim\Interfaces\Http\Response Self
* @api
*/
public function send()
{
// Send headers
if (headers_sent() === false) {
if (strpos(PHP_SAPI, 'cgi') === 0) {
header(sprintf('Status: %s', $this->getReasonPhrase()));
} else {
header(sprintf('%s %s', $this->getProtocolVersion(), $this->getReasonPhrase()));
}
foreach ($this->headers as $name => $value) {
foreach ($value as $hVal) {
header("{$name}: {$hVal}", false);
}
}
}
// Send body
$this->body->seek(0);
while ($this->body->feof() === false) {
echo $this->body->read(1024);
}
return $this;
}
/**
* {@inheritdoc}
*/
protected function doRead($length)
{
return $this->stream->read($length);
}
