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