FIX8::fdinbuf Class Reference

Create a streambuf from an open file descriptor. More...

#include <f8utils.hpp>

Inheritance diagram for FIX8::fdinbuf:

Public Member Functions
	fdinbuf (int infd)

Protected Member Functions
virtual int_type	underflow ()

Protected Attributes
char	_buffer [_buffer_size]
int	_fd

Private Types
enum	{ _back_limit = 4, _buffer_size = 16 }

Detailed Description

Create a streambuf from an open file descriptor.

Definition at line 1136 of file f8utils.hpp.

Member Enumeration Documentation

anonymous enum

private

Enumerator
_back_limit
_buffer_size

Definition at line 1138 of file f8utils.hpp.

{ _back_limit = 4, _buffer_size = 16 };

Constructor & Destructor Documentation

FIX8::fdinbuf::fdinbuf ( int  infd )

inline

Definition at line 1164 of file f8utils.hpp.

References _back_limit.

: _buffer(), _fd(infd) { setg(_buffer + _back_limit, _buffer + _back_limit, _buffer + _back_limit); }

Member Function Documentation

virtual int_type FIX8::fdinbuf::underflow ( )

inlineprotectedvirtual

Definition at line 1144 of file f8utils.hpp.

References _back_limit, and _buffer_size.

   {
      if (gptr() < egptr())
         return *gptr();
      int put_back_cnt(gptr() - eback());
      if (put_back_cnt > _back_limit)
         put_back_cnt = _back_limit;
      memcpy(_buffer + (_back_limit - put_back_cnt), gptr() - put_back_cnt, put_back_cnt);
#ifdef _MSC_VER
      int num_read(_read (_fd, _buffer + _back_limit, _buffer_size - _back_limit));
#else
      int num_read(read (_fd, _buffer + _back_limit, _buffer_size - _back_limit));
#endif
      if (num_read <= 0)
         return -1;
      setg(_buffer + (_back_limit - put_back_cnt), _buffer + _back_limit, _buffer + _back_limit + num_read);
      return *gptr();
   }

Member Data Documentation

char FIX8::fdinbuf::_buffer[_buffer_size]

protected

Definition at line 1141 of file f8utils.hpp.

int FIX8::fdinbuf::_fd

protected

Definition at line 1142 of file f8utils.hpp.

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The documentation for this class was generated from the following file:

• f8utils.hpp