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std_iomanip.h

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00001 // Standard stream manipulators -*- C++ -*-
00002 
00003 // Copyright (C) 1997-1999, 2001 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 2, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // You should have received a copy of the GNU General Public License along
00017 // with this library; see the file COPYING.  If not, write to the Free
00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00019 // USA.
00020 
00021 // As a special exception, you may use this file as part of a free software
00022 // library without restriction.  Specifically, if other files instantiate
00023 // templates or use macros or inline functions from this file, or you compile
00024 // this file and link it with other files to produce an executable, this
00025 // file does not by itself cause the resulting executable to be covered by
00026 // the GNU General Public License.  This exception does not however
00027 // invalidate any other reasons why the executable file might be covered by
00028 // the GNU General Public License.
00029 
00030 //
00031 // ISO C++ 14882: 27.6.3  Standard manipulators
00032 //
00033 
00034 #ifndef _CPP_IOMANIP
00035 #define _CPP_IOMANIP 1
00036 
00037 #pragma GCC system_header
00038 
00039 #include <bits/c++config.h>
00040 #include <bits/std_istream.h>
00041 #include <bits/std_functional.h>
00042 
00043 namespace std
00044 {
00045 
00046   struct _Resetiosflags { ios_base::fmtflags _M_mask; };
00047 
00048   inline _Resetiosflags 
00049   resetiosflags(ios_base::fmtflags __mask)
00050   { 
00051     _Resetiosflags __x; 
00052     __x._M_mask = __mask; 
00053     return __x; 
00054   }
00055 
00056   template <class _CharT, class _Traits>
00057     basic_istream<_CharT,_Traits>& 
00058     operator>>(basic_istream<_CharT,_Traits>& __is, _Resetiosflags __f)
00059     { 
00060       __is.setf(ios_base::fmtflags(0), __f._M_mask); 
00061       return __is; 
00062     }
00063 
00064   template <class _CharT, class _Traits>
00065     basic_ostream<_CharT,_Traits>& 
00066     operator<<(basic_ostream<_CharT,_Traits>& __os, _Resetiosflags __f)
00067     { 
00068       __os.setf(ios_base::fmtflags(0), __f._M_mask); 
00069       return __os; 
00070     }
00071 
00072 
00073   struct _Setiosflags { ios_base::fmtflags _M_mask; };
00074 
00075   inline _Setiosflags 
00076   setiosflags (ios_base::fmtflags __mask)
00077   { 
00078     _Setiosflags __x; 
00079     __x._M_mask = __mask; 
00080     return __x; 
00081   }
00082 
00083   template <class _CharT, class _Traits>
00084     basic_istream<_CharT,_Traits>& 
00085     operator>>(basic_istream<_CharT,_Traits>& __is, _Setiosflags __f)
00086     { 
00087       __is.setf(__f._M_mask); 
00088       return __is; 
00089     }
00090 
00091   template <class _CharT, class _Traits>
00092     basic_ostream<_CharT,_Traits>& 
00093     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setiosflags __f)
00094     { 
00095       __os.setf(__f._M_mask); 
00096       return __os; 
00097     }
00098 
00099 
00100   struct _Setbase { int _M_base; };
00101 
00102   inline _Setbase 
00103   setbase (int __base)
00104   { 
00105     _Setbase __x; 
00106     __x._M_base = __base; 
00107     return __x; 
00108   }
00109 
00110   template <class _CharT, class _Traits>
00111     basic_istream<_CharT,_Traits>& 
00112     operator>>(basic_istream<_CharT,_Traits>& __is, _Setbase __f)
00113     {
00114       __is.setf(__f._M_base ==  8 ? ios_base::oct : 
00115           __f._M_base == 10 ? ios_base::dec : 
00116           __f._M_base == 16 ? ios_base::hex : 
00117           ios_base::fmtflags(0), ios_base::basefield);
00118       return __is; 
00119     }
00120   
00121   template <class _CharT, class _Traits>
00122     basic_ostream<_CharT,_Traits>& 
00123     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setbase __f)
00124     {
00125       __os.setf(__f._M_base ==  8 ? ios_base::oct : 
00126         __f._M_base == 10 ? ios_base::dec : 
00127         __f._M_base == 16 ? ios_base::hex : 
00128         ios_base::fmtflags(0), ios_base::basefield);
00129       return __os; 
00130     }
00131   
00132 
00133   template<class _CharT> 
00134     struct _Setfill { _CharT _M_c; };
00135 
00136   template<class _CharT> 
00137     _Setfill<_CharT> 
00138     setfill(_CharT __c)
00139     { 
00140       _Setfill<_CharT> __x; 
00141       __x._M_c = __c; 
00142       return __x; 
00143     }
00144 
00145   template <class _CharT, class _Traits>
00146     basic_istream<_CharT,_Traits>& 
00147     operator>>(basic_istream<_CharT,_Traits>& __is, _Setfill<_CharT> __f)
00148     { 
00149       __is.fill(__f._M_c); 
00150       return __is; 
00151     }
00152 
00153   template <class _CharT, class _Traits>
00154     basic_ostream<_CharT,_Traits>& 
00155     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setfill<_CharT> __f)
00156     { 
00157       __os.fill(__f._M_c); 
00158       return __os; 
00159     }
00160 
00161 
00162   struct _Setprecision { int _M_n; };
00163 
00164   inline _Setprecision 
00165   setprecision(int __n)
00166   { 
00167     _Setprecision __x; 
00168     __x._M_n = __n; 
00169     return __x; 
00170   }
00171 
00172   template <class _CharT, class _Traits>
00173     basic_istream<_CharT,_Traits>& 
00174     operator>>(basic_istream<_CharT,_Traits>& __is, _Setprecision __f)
00175     { 
00176       __is.precision(__f._M_n); 
00177       return __is; 
00178     }
00179 
00180   template <class _CharT, class _Traits>
00181     basic_ostream<_CharT,_Traits>& 
00182     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setprecision __f)
00183     { 
00184       __os.precision(__f._M_n); 
00185       return __os; 
00186     }
00187 
00188 
00189   struct _Setw { int _M_n; };
00190 
00191   inline _Setw 
00192   setw(int __n)
00193   { 
00194     _Setw __x; 
00195     __x._M_n = __n; 
00196     return __x; 
00197   }
00198 
00199   template <class _CharT, class _Traits>
00200     basic_istream<_CharT,_Traits>& 
00201     operator>>(basic_istream<_CharT,_Traits>& __is, _Setw __f)
00202     { 
00203       __is.width(__f._M_n); 
00204       return __is; 
00205     }
00206 
00207   template <class _CharT, class _Traits>
00208     basic_ostream<_CharT,_Traits>& 
00209     operator<<(basic_ostream<_CharT,_Traits>& __os, _Setw __f)
00210     { 
00211       __os.width(__f._M_n); 
00212       return __os; 
00213     }
00214 
00215 } // namespace std
00216 
00217 #endif  /* __IOMANIP */
00218 

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