std::size_t HeaderParser::advance(std::streambuf& sb)
{
std::size_t ret = 0;
while (sb.in_avail() > 0)
{
++ret;
if (parse(sb.sbumpc()))
return ret;
}
return ret;
}
virtual int_type underflow()
{
// Return current character.
if ( gptr() == &_oneChar ) return traits_type::to_int_type(_oneChar);
// Get another character from the archive stream, if available.
if ( _curPos==_numChars ) return traits_type::eof();
_curPos += 1;
int_type next_value = _streambuf->sbumpc();
if ( !traits_type::eq_int_type(next_value,traits_type::eof()) )
{
setg(&_oneChar, &_oneChar, (&_oneChar)+1);
_oneChar = traits_type::to_char_type(next_value);
}
return next_value;
}
bool Responder::advance(std::streambuf& in)
{
std::streambuf::int_type chi;
while ((chi = in.sgetc()) != std::streambuf::traits_type::eof())
{
char ch = std::streambuf::traits_type::to_char_type(chi);
switch (_state)
{
case state_0:
log_debug("new rpc request");
if (ch == '\xc0')
_state = state_method;
else if (ch == '\xc3')
_state = state_domain;
else
throw std::runtime_error("domain or method name expected");
in.sbumpc();
break;
case state_domain:
if (ch == '\0')
{
log_info_if(!_domain.empty(), "rpc method domain \"" << _domain << '"');
_state = state_method;
}
else
_domain += ch;
in.sbumpc();
break;
case state_method:
if (ch == '\0')
{
log_info("rpc method \"" << _methodName << '"');
_proc = _serviceRegistry.getProcedure(_domain.empty() ? _methodName : _domain + '\0' + _methodName);
if (_proc)
{
_args = _proc->beginCall();
_state = state_params;
}
else
{
_failed = true;
_errorMessage = "unknown method \"" + _methodName + '"';
_state = state_params_skip;
}
_methodName.clear();
_domain.clear();
}
else
_methodName += ch;
in.sbumpc();
break;
case state_params:
if (ch == '\xff')
{
if (_args && *_args)
{
_failed = true;
_errorMessage = "argument expected";
}
in.sbumpc();
return true;
}
else
{
if (_args == 0 || *_args == 0)
{
_failed = true;
_errorMessage = "too many arguments";
_state = state_params_skip;
}
else
{
_deserializer.begin(false);
_state = state_param;
}
}
break;
case state_params_skip:
if (ch == '\xff')
{
in.sbumpc();
return true;
}
else
{
_deserializer.skip();
_state = state_param_skip;
}
break;
case state_param:
if (_deserializer.advance(in))
{
try
{
(*_args)->fixup(_deserializer.si());
++_args;
_state = state_params;
}
catch (const std::exception& e)
{
_failed = true;
_errorMessage = e.what();
_state = state_params_skip;
}
}
break;
case state_param_skip:
if (_deserializer.advance(in))
_state = state_params_skip;
break;
}
}
return false;
}
virtual int uflow() override {
ASSERT(_streambuf);
return _streambuf->sbumpc();
}