199 lines
5.8 KiB
C++
199 lines
5.8 KiB
C++
/***
|
|
*ios.h - definitions/declarations for the ios class.
|
|
*
|
|
* Copyright (c) 1990-1992, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* This file defines the classes, values, macros, and functions
|
|
* used by the ios class.
|
|
* [AT&T C++]
|
|
*
|
|
****/
|
|
|
|
#ifndef _INC_IOS
|
|
#define _INC_IOS
|
|
|
|
|
|
#ifdef M_I86HM
|
|
#define _HFAR_ __far
|
|
#else
|
|
#define _HFAR_
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
#ifndef EOF
|
|
#define EOF (-1)
|
|
#endif
|
|
|
|
// Force word packing to avoid possible -Zp override
|
|
#pragma pack(2)
|
|
|
|
#pragma warning(disable:4505) // disable unwanted /W4 warning
|
|
// #pragma warning(default:4505) // use this to reenable, if necessary
|
|
|
|
class streambuf;
|
|
class ostream;
|
|
|
|
class ios {
|
|
|
|
public:
|
|
enum io_state { goodbit = 0x00,
|
|
eofbit = 0x01,
|
|
failbit = 0x02,
|
|
badbit = 0x04 };
|
|
|
|
enum open_mode { in = 0x01,
|
|
out = 0x02,
|
|
ate = 0x04,
|
|
app = 0x08,
|
|
trunc = 0x10,
|
|
nocreate = 0x20,
|
|
noreplace = 0x40,
|
|
binary = 0x80 }; // CONSIDER: not in latest spec.
|
|
|
|
enum seek_dir { beg=0, cur=1, end=2 };
|
|
|
|
enum { skipws = 0x0001,
|
|
left = 0x0002,
|
|
right = 0x0004,
|
|
internal = 0x0008,
|
|
dec = 0x0010,
|
|
oct = 0x0020,
|
|
hex = 0x0040,
|
|
showbase = 0x0080,
|
|
showpoint = 0x0100,
|
|
uppercase = 0x0200,
|
|
showpos = 0x0400,
|
|
scientific = 0x0800,
|
|
fixed = 0x1000,
|
|
unitbuf = 0x2000,
|
|
stdio = 0x4000
|
|
};
|
|
|
|
static const long basefield; // dec | oct | hex
|
|
static const long adjustfield; // left | right | internal
|
|
static const long floatfield; // scientific | fixed
|
|
|
|
ios(streambuf*); // differs from ANSI
|
|
virtual ~ios();
|
|
|
|
inline long flags() const;
|
|
inline long flags(long _l);
|
|
|
|
inline long setf(long _f,long _m);
|
|
inline long setf(long _l);
|
|
inline long unsetf(long _l);
|
|
|
|
inline int width() const;
|
|
inline int width(int _i);
|
|
|
|
inline ostream* tie(ostream* _os);
|
|
inline ostream* tie() const;
|
|
|
|
inline char fill() const;
|
|
inline char fill(char _c);
|
|
|
|
inline int precision(int _i);
|
|
inline int precision() const;
|
|
|
|
inline int rdstate() const;
|
|
inline void clear(int _i = 0);
|
|
|
|
// inline operator void*() const;
|
|
operator void *() const { if(state&(badbit|failbit) ) return 0; return (void *)this; }
|
|
inline int operator!() const;
|
|
|
|
inline int good() const;
|
|
inline int eof() const;
|
|
inline int fail() const;
|
|
inline int bad() const;
|
|
|
|
inline streambuf* rdbuf() const;
|
|
|
|
inline long _HFAR_ & iword(int) const;
|
|
inline void _HFAR_ * _HFAR_ & pword(int) const;
|
|
|
|
static long bitalloc();
|
|
static int xalloc();
|
|
static void sync_with_stdio();
|
|
|
|
protected:
|
|
ios();
|
|
ios(const ios&); // treat as private
|
|
ios& operator=(const ios&);
|
|
void init(streambuf*);
|
|
|
|
enum { skipping, tied };
|
|
streambuf* bp;
|
|
|
|
int state;
|
|
int ispecial; // not used
|
|
int ospecial; // not used
|
|
int isfx_special; // not used
|
|
int osfx_special; // not used
|
|
int x_delbuf; // if set, rdbuf() deleted by ~ios
|
|
|
|
ostream* x_tie;
|
|
long x_flags;
|
|
int x_precision;
|
|
int x_width;
|
|
char x_fill;
|
|
|
|
static void (*stdioflush)(); // not used
|
|
public:
|
|
int delbuf() const { return x_delbuf; }
|
|
void delbuf(int _i) { x_delbuf = _i; }
|
|
|
|
private:
|
|
static long x_maxbit;
|
|
static long _HFAR_ * x_statebuf; // used by xalloc()
|
|
static int x_curindex;
|
|
// consider: make interal static to ios::sync_with_stdio()
|
|
static int sunk_with_stdio; // make sure sync_with done only once
|
|
};
|
|
|
|
inline ios& dec(ios& _strm) { _strm.setf(ios::dec,ios::basefield); return _strm; }
|
|
inline ios& hex(ios& _strm) { _strm.setf(ios::hex,ios::basefield); return _strm; }
|
|
inline ios& oct(ios& _strm) { _strm.setf(ios::oct,ios::basefield); return _strm; }
|
|
|
|
inline long ios::flags() const { return x_flags; }
|
|
inline long ios::flags(long _l){ long _lO; _lO = x_flags; x_flags = _l; return _lO; }
|
|
|
|
inline long ios::setf(long _l,long _m){ long _lO; _lO = x_flags; x_flags = (_l&_m) | (x_flags&(~_m)); return _lO; }
|
|
inline long ios::setf(long _l){ long _lO; _lO = x_flags; x_flags |= _l; return _lO; }
|
|
inline long ios::unsetf(long _l){ long _lO; _lO = x_flags; x_flags &= (~_l); return _lO; }
|
|
|
|
inline int ios::width() const { return x_width; }
|
|
inline int ios::width(int _i){ int _iO; _iO = (int)x_width; x_width = _i; return _iO; }
|
|
|
|
inline ostream* ios::tie(ostream* _os){ ostream* _osO; _osO = x_tie; x_tie = _os; return _osO; }
|
|
inline ostream* ios::tie() const { return x_tie; }
|
|
inline char ios::fill() const { return x_fill; }
|
|
inline char ios::fill(char _c){ char _cO; _cO = x_fill; x_fill = _c; return _cO; }
|
|
inline int ios::precision(int _i){ int _iO; _iO = (int)x_precision; x_precision = _i; return _iO; }
|
|
inline int ios::precision() const { return x_precision; }
|
|
|
|
inline int ios::rdstate() const { return state; }
|
|
|
|
// inline ios::operator void *() const { if(state&(badbit|failbit) ) return 0; return (void *)this; }
|
|
inline int ios::operator!() const { return state&(badbit|failbit); }
|
|
|
|
inline int ios::bad() const { return state & badbit; }
|
|
inline void ios::clear(int _i){ state = _i; }
|
|
inline int ios::eof() const { return state & eofbit; }
|
|
inline int ios::fail() const { return state & (badbit | failbit); }
|
|
inline int ios::good() const { return state == 0; }
|
|
|
|
inline streambuf* ios::rdbuf() const { return bp; }
|
|
|
|
inline long _HFAR_ & ios::iword(int _i) const { return x_statebuf[_i] ; }
|
|
inline void _HFAR_ * _HFAR_ & ios::pword(int _i) const { return (void _HFAR_ * _HFAR_ &)x_statebuf[_i]; }
|
|
|
|
// Restore default packing
|
|
#pragma pack()
|
|
|
|
#endif
|