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// Copyright (C) 2003 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_SOCKSTREAMBUF_KERNEl_1_
#define DLIB_SOCKSTREAMBUF_KERNEl_1_
#include <iosfwd>
#include <streambuf>
#include "../sockets.h"
#include "sockstreambuf_kernel_abstract.h"
namespace dlib
{
// ----------------------------------------------------------------------------------------
class sockstreambuf_kernel_1 : public std::streambuf
{
/*!
INITIAL VALUE
con == a connection
lastread_next == false
peek == EOF
CONVENTION
if (peek != EOF) then
peek == the last character read from the connection object and
is used to store the char in the event the user peeks by
calling sgetc()
if (lastread != EOF) then
lastread == the last character read and consumed by the user
if (lastread_next) then
the next character to be returned to the user is lastread because
the user put it back into the buffer
!*/
public:
sockstreambuf_kernel_1 (
connection* con_
) :
con(*con_),
peek(EOF),
lastread_next(false)
{}
sockstreambuf_kernel_1 (
const scoped_ptr<connection>& con_
) :
con(*con_),
peek(EOF),
lastread_next(false)
{}
connection* get_connection (
) { return &con; }
protected:
// output functions
int_type overflow (
int_type c
);
std::streamsize xsputn (
const char* s,
std::streamsize num
);
// input functions
int_type underflow(
);
int_type uflow(
);
int_type pbackfail(
int_type c
);
std::streamsize xsgetn (
char_type* s,
std::streamsize n
);
private:
// member data
connection& con;
int_type peek;
int_type lastread;
bool lastread_next;
};
// ----------------------------------------------------------------------------------------
}
#ifdef NO_MAKEFILE
#include "sockstreambuf_kernel_1.cpp"
#endif
#endif // DLIB_SOCKSTREAMBUF_KERNEl_1_
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