118 lines
2.8 KiB
C++
118 lines
2.8 KiB
C++
/*
|
|
* CDE - Common Desktop Environment
|
|
*
|
|
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
|
|
*
|
|
* These libraries and programs are free software; you can
|
|
* redistribute them and/or modify them under the terms of the GNU
|
|
* Lesser General Public License as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* These libraries and programs are distributed in the hope that
|
|
* they will be useful, but WITHOUT ANY WARRANTY; without even the
|
|
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU Lesser General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with these libraries and programs; if not, write
|
|
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
|
|
* Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
/* $XConsortium: streambuf.h /main/4 1996/06/11 17:39:15 cde-hal $ */
|
|
|
|
|
|
#ifndef _x_streambuf_h
|
|
#define _x_streambuf_h
|
|
|
|
#ifdef EOF
|
|
#if EOF!=-1
|
|
#define EOF (-1)
|
|
#endif
|
|
#else
|
|
#define EOF (-1)
|
|
#endif
|
|
|
|
|
|
typedef long streampos;
|
|
|
|
|
|
#ifdef STREAM_DEBUG
|
|
#define form x_form
|
|
#define streambuf x_streambuf
|
|
#define filebuf x_filebuf
|
|
#define ios x_ios
|
|
#define iostream x_iostream
|
|
#define istream x_istream
|
|
#define ostream x_ostream
|
|
#define fstream x_fstream
|
|
#define istrstream x_istrstream
|
|
#define ostrstream x_ostrstream
|
|
#endif
|
|
|
|
|
|
class streambuf
|
|
{
|
|
protected:
|
|
char* base;
|
|
char* end;
|
|
char* put_ptr;
|
|
char* get_ptr;
|
|
|
|
int _size;
|
|
int _capacity;
|
|
int _alloc;
|
|
|
|
int _pcount;
|
|
int _gcount;
|
|
|
|
protected:
|
|
enum notify_action_t { GET, PUT };
|
|
virtual void notify(int) {};
|
|
|
|
virtual int overflow() { return EOF;};
|
|
virtual int underflow() { return EOF; };
|
|
|
|
int full() { return ( _size == _capacity ) ? 1 : 0 ; };
|
|
int empty() { return ( _size == 0 ) ? 1 : 0 ; };
|
|
|
|
void empty_buffer() {
|
|
_size = 0;
|
|
put_ptr = get_ptr = base;
|
|
};
|
|
|
|
int move_get_ptr(int);
|
|
int move_put_ptr(int);
|
|
|
|
public:
|
|
streambuf();
|
|
streambuf(char* p, int l, int pHasContent = 0);
|
|
virtual ~streambuf();
|
|
|
|
virtual int examine() ; // EOF: no char available. Otherwise,
|
|
// return 0.The get_ptr pointer does
|
|
// not move.
|
|
|
|
virtual int get() ; // EOF: can't get a char. Otherwise,
|
|
// return 0. The get_ptr pointer does move.
|
|
|
|
virtual int putback(char c) ; // EOF: can't put back. Otherwise,
|
|
// putback operation is ok.
|
|
virtual int put(char c) ; // EOF: can't put. Otherwise,
|
|
// put operation is ok.
|
|
|
|
int gcount() { return _gcount; };
|
|
void clear_gcount() { _gcount = 0; };
|
|
|
|
int pcount() { return _pcount; };
|
|
void clear_pcount() { _pcount = 0; };
|
|
|
|
virtual int flush() { return EOF; };
|
|
virtual int seekg(streampos) { return EOF; };
|
|
|
|
char* get_buf() { return base; };
|
|
};
|
|
|
|
#endif
|