reactos/sdk/include/c++/stlport/stl/_iomanip.h

   1 /*
   2  * Copyright (c) 1999
   3  * Silicon Graphics Computer Systems, Inc.
   4  *
   5  * Copyright (c) 1999
   6  * Boris Fomitchev
   7  *
   8  * This material is provided "as is", with absolutely no warranty expressed
   9  * or implied. Any use is at your own risk.
  10  *
  11  * Permission to use or copy this software for any purpose is hereby granted
  12  * without fee, provided the above notices are retained on all copies.
  13  * Permission to modify the code and to distribute modified code is granted,
  14  * provided the above notices are retained, and a notice that the code was
  15  * modified is included with the above copyright notice.
  16  *
  17  */
  18
  19 #ifndef _STLP_INTERNAL_IOMANIP
  20 #define _STLP_INTERNAL_IOMANIP
  21
  22 #ifndef _STLP_INTERNAL_ISTREAM
  23 #  include <stl/_istream.h>              // Includes <ostream> and <ios>
  24 #endif
  25
  26 _STLP_BEGIN_NAMESPACE
  27
  28 _STLP_MOVE_TO_PRIV_NAMESPACE
  29
  30 //----------------------------------------------------------------------
  31 // Machinery for defining manipulators.
  32
  33 // Class that calls one of ios_base's single-argument member functions.
  34 template <class _Arg>
  35 struct _Ios_Manip_1 {
  36    typedef _Arg (ios_base::*__f_ptr_type)(_Arg);
  37
  38   _Ios_Manip_1(__f_ptr_type __f, const _Arg& __arg)
  39     : _M_f(__f), _M_arg(__arg) {}
  40
  41   void operator()(ios_base& __ios) const
  42   { (__ios.*_M_f)(_M_arg); }
  43
  44   __f_ptr_type _M_f;
  45   _Arg _M_arg;
  46 };
  47
  48 // Class that calls one of ios_base's two-argument member functions.
  49 struct _Ios_Setf_Manip {
  50   ios_base::fmtflags _M_flag;
  51   ios_base::fmtflags _M_mask;
  52   bool _M_two_args;
  53
  54   _Ios_Setf_Manip(ios_base::fmtflags __f)
  55     : _M_flag(__f), _M_mask(0), _M_two_args(false) {}
  56
  57   _Ios_Setf_Manip(ios_base::fmtflags __f, ios_base::fmtflags __m)
  58     : _M_flag(__f), _M_mask(__m), _M_two_args(true) {}
  59
  60   void operator()(ios_base& __ios) const {
  61     if (_M_two_args)
  62       __ios.setf(_M_flag, _M_mask);
  63     else
  64       __ios.setf(_M_flag);
  65   }
  66 };
  67
  68 _STLP_MOVE_TO_STD_NAMESPACE
  69
  70 template <class _CharT, class _Traits, class _Arg>
  71 inline basic_istream<_CharT, _Traits>& _STLP_CALL
  72 operator>>(basic_istream<_CharT, _Traits>& __istr,
  73            const _STLP_PRIV _Ios_Manip_1<_Arg>& __f) {
  74   __f(__istr);
  75   return __istr;
  76 }
  77
  78 template <class _CharT, class _Traits, class _Arg>
  79 inline basic_ostream<_CharT, _Traits>& _STLP_CALL
  80 operator<<(basic_ostream<_CharT, _Traits>& __os,
  81            const _STLP_PRIV _Ios_Manip_1<_Arg>& __f) {
  82   __f(__os);
  83   return __os;
  84 }
  85
  86 template <class _CharT, class _Traits>
  87 inline basic_istream<_CharT, _Traits>& _STLP_CALL
  88 operator>>(basic_istream<_CharT, _Traits>& __istr,
  89            const _STLP_PRIV _Ios_Setf_Manip& __f) {
  90   __f(__istr);
  91   return __istr;
  92 }
  93
  94 template <class _CharT, class _Traits>
  95 inline basic_ostream<_CharT, _Traits>& _STLP_CALL
  96 operator<<(basic_ostream<_CharT, _Traits>& __os,
  97            const _STLP_PRIV _Ios_Setf_Manip& __f) {
  98   __f(__os);
  99   return __os;
 100 }
 101
 102 //----------------------------------------------------------------------
 103 // The ios_base manipulators.
 104 inline _STLP_PRIV _Ios_Setf_Manip _STLP_CALL resetiosflags(ios_base::fmtflags __mask)
 105 { return _STLP_PRIV _Ios_Setf_Manip(0, __mask); }
 106
 107 inline _STLP_PRIV _Ios_Setf_Manip _STLP_CALL setiosflags(ios_base::fmtflags __flag)
 108 { return _STLP_PRIV _Ios_Setf_Manip(__flag); }
 109
 110 inline _STLP_PRIV _Ios_Setf_Manip _STLP_CALL setbase(int __n) {
 111   ios_base::fmtflags __base = __n == 8  ? ios_base::oct :
 112                               __n == 10 ? ios_base::dec :
 113                               __n == 16 ? ios_base::hex :
 114                               ios_base::fmtflags(0);
 115   return _STLP_PRIV _Ios_Setf_Manip(__base, ios_base::basefield);
 116 }
 117
 118 inline _STLP_PRIV _Ios_Manip_1<streamsize> _STLP_CALL
 119 setprecision(int __n) {
 120   _STLP_PRIV _Ios_Manip_1<streamsize>::__f_ptr_type __f = &ios_base::precision;
 121   return _STLP_PRIV _Ios_Manip_1<streamsize>(__f, __n);
 122 }
 123
 124 inline _STLP_PRIV _Ios_Manip_1<streamsize>  _STLP_CALL
 125 setw(int __n) {
 126   _STLP_PRIV _Ios_Manip_1<streamsize>::__f_ptr_type __f = &ios_base::width;
 127   return _STLP_PRIV _Ios_Manip_1<streamsize>(__f, __n);
 128 }
 129
 130 //----------------------------------------------------------------------
 131 // setfill, a manipulator that operates on basic_ios<> instead of ios_base.
 132
 133 _STLP_MOVE_TO_PRIV_NAMESPACE
 134
 135 template <class _CharT>
 136 struct _Setfill_Manip {
 137   _Setfill_Manip(_CharT __c) : _M_c(__c) {}
 138   _CharT _M_c;
 139 };
 140
 141 _STLP_MOVE_TO_STD_NAMESPACE
 142
 143 template <class _CharT, class _CharT2, class _Traits>
 144 inline basic_ostream<_CharT, _Traits>& _STLP_CALL
 145 operator<<(basic_ostream<_CharT, _Traits>& __os,
 146            const _STLP_PRIV _Setfill_Manip<_CharT2>& __m) {
 147   __os.fill(__m._M_c);
 148   return __os;
 149 }
 150
 151 template <class _CharT, class _CharT2, class _Traits>
 152 inline basic_istream<_CharT, _Traits>& _STLP_CALL
 153 operator>>(basic_istream<_CharT, _Traits>& __is,
 154            const _STLP_PRIV _Setfill_Manip<_CharT2>& __m) {
 155   __is.fill(__m._M_c);
 156   return __is;
 157 }
 158
 159 template <class _CharT>
 160 inline _STLP_PRIV _Setfill_Manip<_CharT> _STLP_CALL setfill(_CharT __c)
 161 { return _STLP_PRIV _Setfill_Manip<_CharT>(__c); }
 162
 163 _STLP_END_NAMESPACE
 164
 165 #endif /* _STLP_INTERNAL_IOMANIP */