void HttpOutput::Answer(IHttpStreamAnswer& stream)
{
HttpCompression compression = stream.SetupHttpCompression(isGzipAllowed_, isDeflateAllowed_);
switch (compression)
{
case HttpCompression_None:
break;
case HttpCompression_Gzip:
stateMachine_.AddHeader("Content-Encoding", "gzip");
break;
case HttpCompression_Deflate:
stateMachine_.AddHeader("Content-Encoding", "deflate");
break;
default:
throw OrthancException(ErrorCode_ParameterOutOfRange);
}
stateMachine_.SetContentLength(stream.GetContentLength());
std::string contentType = stream.GetContentType();
if (contentType.empty())
{
contentType = "application/octet-stream";
}
stateMachine_.SetContentType(contentType.c_str());
std::string filename;
if (stream.HasContentFilename(filename))
{
SetContentFilename(filename.c_str());
}
while (stream.ReadNextChunk())
{
stateMachine_.SendBody(stream.GetChunkContent(),
stream.GetChunkSize());
}
stateMachine_.CloseBody();
}
static bool ReadAllStream(std::string& result,
IHttpStreamAnswer& stream,
bool allowGzip = false,
bool allowDeflate = false)
{
stream.SetupHttpCompression(allowGzip, allowDeflate);
result.resize(static_cast<size_t>(stream.GetContentLength()));
size_t pos = 0;
while (stream.ReadNextChunk())
{
size_t s = stream.GetChunkSize();
if (pos + s > result.size())
{
return false;
}
memcpy(&result[pos], stream.GetChunkContent(), s);
pos += s;
}
return pos == result.size();
}