150 lines
5.4 KiB
C++
150 lines
5.4 KiB
C++
/***
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*istream.h - definitions/declarations for the istream 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 istream class.
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* [AT&T C++]
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*
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****/
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#ifndef _INC_ISTREAM
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#define _INC_ISTREAM
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#include <ios.h>
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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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#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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typedef long streamoff, streampos;
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class istream : virtual public ios {
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public:
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istream(streambuf*);
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virtual ~istream();
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int ipfx(int =0);
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void isfx() { }
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inline istream& operator>>(istream& (*_f)(istream&));
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inline istream& operator>>(ios& (*_f)(ios&));
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istream& operator>>(char _HFAR_ *);
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inline istream& operator>>(unsigned char _HFAR_ *);
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inline istream& operator>>(signed char _HFAR_ *);
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istream& operator>>(char _HFAR_ &);
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inline istream& operator>>(unsigned char _HFAR_ &);
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inline istream& operator>>(signed char _HFAR_ &);
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istream& operator>>(short _HFAR_ &);
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istream& operator>>(unsigned short _HFAR_ &);
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istream& operator>>(int _HFAR_ &);
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istream& operator>>(unsigned int _HFAR_ &);
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istream& operator>>(long _HFAR_ &);
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istream& operator>>(unsigned long _HFAR_ &);
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istream& operator>>(float _HFAR_ &);
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istream& operator>>(double _HFAR_ &);
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istream& operator>>(long double _HFAR_ &);
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istream& operator>>(streambuf*);
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int get();
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istream& get(char _HFAR_ *,int,char ='\n');
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inline istream& get(unsigned char _HFAR_ *,int,char ='\n');
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inline istream& get(signed char _HFAR_ *,int,char ='\n');
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istream& get(char _HFAR_ &);
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inline istream& get(unsigned char _HFAR_ &);
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inline istream& get(signed char _HFAR_ &);
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istream& get(streambuf&,char ='\n');
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inline istream& getline(char _HFAR_ *,int,char ='\n');
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inline istream& getline(unsigned char _HFAR_ *,int,char ='\n');
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inline istream& getline(signed char _HFAR_ *,int,char ='\n');
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inline istream& ignore(int =1,int =EOF);
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istream& read(char _HFAR_ *,int);
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inline istream& read(unsigned char _HFAR_ *,int);
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inline istream& read(signed char _HFAR_ *,int);
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int gcount() const { return x_gcount; }
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int peek();
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istream& putback(char);
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int sync();
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istream& seekg(streampos);
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istream& seekg(streamoff,ios::seek_dir);
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streampos tellg();
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void eatwhite(); // consider: protect and friend with manipulator ws
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protected:
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istream();
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istream(const istream&); // treat as private
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istream& operator=(streambuf* _isb); // treat as private
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istream& operator=(const istream& _is) { return operator=(_is.rdbuf()); }
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int do_ipfx(int);
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private:
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istream(ios&);
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int getint(char _HFAR_ *);
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int getdouble(char _HFAR_ *, int);
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int _fGline;
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int x_gcount;
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};
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inline istream& istream::operator>>(istream& (*_f)(istream&)) { (*_f)(*this); return *this; }
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inline istream& istream::operator>>(ios& (*_f)(ios&)) { (*_f)(*this); return *this; }
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inline istream& istream::operator>>(unsigned char _HFAR_ * _s) { return operator>>((char _HFAR_ *)_s); }
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inline istream& istream::operator>>(signed char _HFAR_ * _s) { return operator>>((char _HFAR_ *)_s); }
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inline istream& istream::operator>>(unsigned char _HFAR_ & _c) { return operator>>((char _HFAR_ &) _c); }
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inline istream& istream::operator>>(signed char _HFAR_ & _c) { return operator>>((char _HFAR_ &) _c); }
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inline istream& istream::get(unsigned char _HFAR_ * b, int lim ,char delim) { return get((char _HFAR_ *)b, lim, delim); }
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inline istream& istream::get(signed char _HFAR_ * b, int lim, char delim) { return get((char _HFAR_ *)b, lim, delim); }
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inline istream& istream::get(unsigned char _HFAR_ & _c) { return get((char _HFAR_ &)_c); }
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inline istream& istream::get(signed char _HFAR_ & _c) { return get((char _HFAR_ &)_c); }
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inline istream& istream::getline(char _HFAR_ * _b,int _lim,char _delim) { _fGline++; return get(_b, _lim, _delim); }
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inline istream& istream::getline(unsigned char _HFAR_ * _b,int _lim,char _delim) { _fGline++; return get((char _HFAR_ *)_b, _lim, _delim); }
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inline istream& istream::getline(signed char _HFAR_ * _b,int _lim,char _delim) { _fGline++; return get((char _HFAR_ *)_b, _lim, _delim); }
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inline istream& istream::ignore(int _n,int delim) { _fGline++; return get((char _HFAR_ *)0, _n+1, (char)delim); }
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inline istream& istream::read(unsigned char _HFAR_ * _ptr, int _n) { return read((char _HFAR_ *) _ptr, _n); }
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inline istream& istream::read(signed char _HFAR_ * _ptr, int _n) { return read((char _HFAR_ *) _ptr, _n); }
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class istream_withassign : public istream {
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public:
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istream_withassign();
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istream_withassign(streambuf*);
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~istream_withassign();
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istream& operator=(const istream& _is) { return istream::operator=(_is); }
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istream& operator=(streambuf* _isb) { return istream::operator=(_isb); }
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};
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#ifndef _WINDLL
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extern istream_withassign cin;
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#endif
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inline istream& ws(istream& _ins) { _ins.eatwhite(); return _ins; }
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ios& dec(ios&);
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ios& hex(ios&);
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ios& oct(ios&);
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// Restore default packing
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#pragma pack()
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#endif
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