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- /***
- *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 // fold huge member pointers into far
- #define _HFAR_ __far
- #else
- #define _HFAR_
- #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;
- short x_precision;
- char x_fill;
- short x_width;
-
- 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 = (short)_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 = (short)_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 // !_INC_IOS
-