1 /* This is part of libio/iostream, providing -*- C++ -*- input/output. 2 Copyright (C) 1993 Free Software Foundation 3 4 This file is part of the GNU IO Library. This library is free 5 software; you can redistribute it and/or modify it under the 6 terms of the GNU General Public License as published by the 7 Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this library; see the file COPYING. If not, write to the Free 17 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 19 As a special exception, if you link this library with files 20 compiled with a GNU compiler to produce an executable, this does not cause 21 the resulting executable to be covered by the GNU General Public License. 22 This exception does not however invalidate any other reasons why 23 the executable file might be covered by the GNU General Public License. */ 24 25 #ifndef _IOMANIP_H 26 #ifdef __GNUG__ 27 #pragma interface 28 #endif 29 #define _IOMANIP_H 30 31 #include <iostream.h> 32 33 extern "C++" { 34 //----------------------------------------------------------------------------- 35 // Parametrized Manipulators as specified by ANSI draft 36 //----------------------------------------------------------------------------- 37 38 //----------------------------------------------------------------------------- 39 // Stream Manipulators 40 //----------------------------------------------------------------------------- 41 // 42 template<class TP> class smanip; // TP = Type Param 43 44 template<class TP> class sapp { 45 ios& (*_f)(ios&, TP); 46 public: 47 sapp(ios& (*f)(ios&, TP)) : _f(f) {} 48 // 49 smanip<TP> operator()(TP a) 50 { return smanip<TP>(_f, a); } 51 }; 52 53 template<class TP> 54 inline istream& operator>>(istream& i, const smanip<TP>& m); 55 template<class TP> 56 inline ostream& operator<<(ostream& o, const smanip<TP>& m); 57 58 template <class TP> class smanip { 59 ios& (*_f)(ios&, TP); 60 TP _a; 61 public: 62 smanip(ios& (*f)(ios&, TP), TP a) : _f(f), _a(a) {} 63 // 64 friend 65 istream& operator>> <>(istream& i, const smanip<TP>& m); 66 friend 67 ostream& operator<< <>(ostream& o, const smanip<TP>& m); 68 }; 69 70 #ifdef __GNUG__ 71 __extension__ extern template class smanip<int>; 72 __extension__ extern template class smanip<ios::fmtflags>; 73 #endif 74 75 template<class TP> 76 inline istream& operator>>(istream& i, const smanip<TP>& m) 77 { (*m._f)(i, m._a); return i; } 78 79 template<class TP> 80 inline ostream& operator<<(ostream& o, const smanip<TP>& m) 81 { (*m._f)(o, m._a); return o;} 82 83 #ifdef __GNUG__ 84 __extension__ extern 85 template istream& operator>>(istream&, const smanip<int>&); 86 __extension__ extern 87 template istream& operator>>(istream&, const smanip<ios::fmtflags>&); 88 __extension__ extern 89 template ostream& operator<<(ostream&, const smanip<int>&); 90 __extension__ extern 91 template ostream& operator<<(ostream&, const smanip<ios::fmtflags>&); 92 #endif 93 94 //----------------------------------------------------------------------------- 95 // Input-Stream Manipulators 96 //----------------------------------------------------------------------------- 97 // 98 template<class TP> class imanip; 99 100 template<class TP> class iapp { 101 istream& (*_f)(istream&, TP); 102 public: 103 iapp(istream& (*f)(istream&,TP)) : _f(f) {} 104 // 105 imanip<TP> operator()(TP a) 106 { return imanip<TP>(_f, a); } 107 }; 108 109 template <class TP> 110 inline istream& operator>>(istream&, const imanip<TP>&); 111 112 template <class TP> class imanip { 113 istream& (*_f)(istream&, TP); 114 TP _a; 115 public: 116 imanip(istream& (*f)(istream&, TP), TP a) : _f(f), _a(a) {} 117 // 118 friend 119 istream& operator>> <>(istream& i, const imanip<TP>& m); 120 }; 121 122 template <class TP> 123 inline istream& operator>>(istream& i, const imanip<TP>& m) 124 { return (*m._f)( i, m._a); } 125 126 //----------------------------------------------------------------------------- 127 // Output-Stream Manipulators 128 //----------------------------------------------------------------------------- 129 // 130 template<class TP> class omanip; 131 132 template<class TP> class oapp { 133 ostream& (*_f)(ostream&, TP); 134 public: 135 oapp(ostream& (*f)(ostream&,TP)) : _f(f) {} 136 // 137 omanip<TP> operator()(TP a) 138 { return omanip<TP>(_f, a); } 139 }; 140 141 template <class TP> 142 inline ostream& operator<<(ostream&, const omanip<TP>&); 143 144 template <class TP> class omanip { 145 ostream& (*_f)(ostream&, TP); 146 TP _a; 147 public: 148 omanip(ostream& (*f)(ostream&, TP), TP a) : _f(f), _a(a) {} 149 // 150 friend 151 ostream& operator<< <>(ostream& o, const omanip<TP>& m); 152 }; 153 154 template <class TP> 155 inline ostream& operator<<(ostream& o, const omanip<TP>& m) 156 { return (*m._f)(o, m._a); } 157 158 //----------------------------------------------------------------------------- 159 // Available Manipulators 160 //----------------------------------------------------------------------------- 161 162 // 163 // Macro to define an iomanip function, with one argument 164 // The underlying function is `__iomanip_<name>' 165 // 166 #define __DEFINE_IOMANIP_FN1(type,param,function) \ 167 extern ios& __iomanip_##function (ios&, param); \ 168 inline type<param> function (param n) \ 169 { return type<param> (__iomanip_##function, n); } 170 171 __DEFINE_IOMANIP_FN1( smanip, int, setbase) 172 __DEFINE_IOMANIP_FN1( smanip, int, setfill) 173 __DEFINE_IOMANIP_FN1( smanip, int, setprecision) 174 __DEFINE_IOMANIP_FN1( smanip, int, setw) 175 176 __DEFINE_IOMANIP_FN1( smanip, ios::fmtflags, resetiosflags) 177 __DEFINE_IOMANIP_FN1( smanip, ios::fmtflags, setiosflags) 178 } // extern "C++" 179 180 #endif /*!_IOMANIP_H*/ 181