mirror of
https://github.com/matrix-construct/construct
synced 2024-07-23 02:48:41 +02:00
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2016 Charybdis Development Team
|
|
* Copyright (C) 2016 Jason Volk <jason@zemos.net>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice is present in all copies.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
namespace ircd {
|
|
|
|
struct rbuf
|
|
{
|
|
tape reel; // @0 +80 ||
|
|
std::exception_ptr eptr; // @80 +8 |
|
|
uint16_t checked; // @88 +2 |
|
|
uint16_t length; // @90 +2 |
|
|
std::array<char, BUFSIZE> buf alignas(16); // @96(92) +512 |||||||||
|
|
// @608 | 640
|
|
bool terminated() const; // rbuf has LF termination
|
|
uint16_t remaining() const; // bytes remaining in rbuf
|
|
|
|
size_t handle_pck(const error_code &, const size_t) noexcept;
|
|
void reset();
|
|
|
|
rbuf();
|
|
};
|
|
|
|
static_assert(BUFSIZE == 512, "");
|
|
|
|
inline
|
|
rbuf::rbuf()
|
|
:checked{0}
|
|
,length{0}
|
|
{
|
|
}
|
|
|
|
inline void
|
|
rbuf::reset()
|
|
{
|
|
checked = 0;
|
|
length = 0;
|
|
}
|
|
|
|
inline size_t
|
|
rbuf::handle_pck(const error_code &ec,
|
|
const size_t bytes)
|
|
noexcept try
|
|
{
|
|
if(ec)
|
|
return 0;
|
|
|
|
length += bytes;
|
|
if(reel.append(buf.data(), length))
|
|
return 0;
|
|
|
|
if(terminated())
|
|
throw rfc1459::syntax_error("invalid syntax"); //TODO: eps + ERR_
|
|
|
|
checked = length;
|
|
return remaining()?: throw rfc1459::syntax_error("message length exceeded"); //TODO: ERR_
|
|
}
|
|
catch(...)
|
|
{
|
|
eptr = std::current_exception();
|
|
return 0;
|
|
}
|
|
|
|
inline uint16_t
|
|
ircd::rbuf::remaining()
|
|
const
|
|
{
|
|
return buf.size() - length;
|
|
}
|
|
|
|
inline bool
|
|
rbuf::terminated()
|
|
const
|
|
{
|
|
const auto b(std::next(buf.rbegin(), remaining()));
|
|
const auto e(std::next(buf.rbegin(), buf.size() - checked));
|
|
return std::find(b, e, '\n') != e;
|
|
}
|
|
|
|
} // namespace ircd
|
|
#endif // __cplusplus
|