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// $Id$
#ifndef ACE_IOS_BIDIR_STREAM_BUFFER_CPP
#define ACE_IOS_BIDIR_STREAM_BUFFER_CPP
#include "ace/INet/BidirStreamBuffer.h"
#include "ace/OS_Memory.h"
#include "ace/OS_NS_string.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
namespace ACE
{
namespace IOS
{
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::BasicBidirStreamBuffer (
STREAM_HANDLER* sh,
std::streamsize bufsz,
openmode mode)
: bufsize_ (bufsz),
mode_ (mode),
stream_ (sh),
interceptor_ (0)
{
this->stream_->add_reference ();
char_type* p = 0;
ACE_NEW_NORETURN (p, char_type [bufsz]);
this->read_buffer_.reset (p);
p = 0;
ACE_NEW_NORETURN (p, char_type [bufsz]);
this->write_buffer_.reset (p);
this->reset_buffers ();
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::~BasicBidirStreamBuffer ()
{
this->close_stream ();
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
typename BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::int_type
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::overflow (int_type c)
{
if (!(this->mode_ & ios_type::out)) return char_traits::eof ();
if (c != char_traits::eof ())
{
*this->pptr () = char_traits::to_char_type (c);
this->pbump (1);
}
if (this->flush_buffer () == std::streamsize (-1)) return char_traits::eof ();
return c;
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
typename BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::int_type
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::underflow ()
{
if (!(this->mode_ & ios_type::in)) return char_traits::eof ();
if (this->gptr () && (this->gptr () < this->egptr ()))
return char_traits::to_int_type (*this->gptr ());
int putback = int (this->gptr () - this->eback ());
if (putback > 4) putback = 4;
ACE_OS::memmove (this->read_buffer_.get () + (4 - putback),
this->gptr () - putback,
putback * sizeof (char_type));
if (this->interceptor_)
this->interceptor_->before_read (this->bufsize_ - 4);
int n = this->read_from_stream (this->read_buffer_.get () + 4,
this->bufsize_ - 4);
if (this->interceptor_)
this->interceptor_->after_read (this->read_buffer_.get () + 4, n);
if (n <= 0)
{
if (this->interceptor_)
this->interceptor_->on_eof ();
return char_traits::eof ();
}
this->setg (this->read_buffer_.get () + (4 - putback),
this->read_buffer_.get () + 4,
this->read_buffer_.get () + 4 + n);
// return next character
return char_traits::to_int_type (*this->gptr ());
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
int
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::sync ()
{
if (this->pptr () && this->pptr () > this->pbase ())
{
if (this->flush_buffer () == -1) return -1;
}
return 0;
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
const STREAM_HANDLER&
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::stream () const
{
return *this->stream_;
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
void
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::close_stream ()
{
if (this->stream_ != 0)
{
ACE_Errno_Guard eguard (errno);
this->stream_->remove_reference ();
this->stream_ = 0;
}
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
void
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::set_interceptor (interceptor_type& interceptor)
{
this->interceptor_ = &interceptor;
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
void
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::set_mode (openmode mode)
{
this->mode_ = mode;
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
typename BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::openmode
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::get_mode () const
{
return this->mode_;
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
void
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::reset_buffers()
{
this->setg (this->read_buffer_.get () + 4,
this->read_buffer_.get () + 4,
this->read_buffer_.get () + 4);
this->setp (this->write_buffer_.get (),
this->write_buffer_.get () + (this->bufsize_ - 1));
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
int
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::read_from_stream (char_type* buffer, std::streamsize length)
{
return this->stream_ == 0 ? 0 : this->stream_->read_from_stream (buffer, length, sizeof(char_type));
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
int
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::write_to_stream (const char_type* buffer, std::streamsize length)
{
return this->stream_ == 0 ? 0 : this->stream_->write_to_stream (buffer, length, sizeof(char_type));
}
template <class ACE_CHAR_T, class STREAM_HANDLER, class TR>
int
BasicBidirStreamBuffer<ACE_CHAR_T, STREAM_HANDLER, TR>::flush_buffer ()
{
int n = int (this->pptr () - this->pbase ());
if (this->interceptor_)
this->interceptor_->before_write (this->pbase (), n);
int n_out = this->write_to_stream (this->pbase (), n);
if (this->interceptor_)
this->interceptor_->after_write (n_out);
if (n_out == n)
{
this->pbump (-n);
return n;
}
return -1;
}
template <class STREAM_HANDLER>
BidirStreamBuffer<STREAM_HANDLER>::BidirStreamBuffer (
STREAM_HANDLER* sh,
std::streamsize bufsz,
openmode mode)
: BasicBidirStreamBuffer<char, STREAM_HANDLER> (sh, bufsz, mode)
{
}
template <class STREAM_HANDLER>
BidirStreamBuffer<STREAM_HANDLER>::~BidirStreamBuffer ()
{
}
}
}
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* ACE_IOS_BIDIR_STREAM_BUFFER_CPP */
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