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1 /* |
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2 * Copyright (c) 1999 |
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3 * Silicon Graphics Computer Systems, Inc. |
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4 * |
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5 * Copyright (c) 1999 |
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6 * Boris Fomitchev |
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7 * |
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8 * This material is provided "as is", with absolutely no warranty expressed |
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9 * or implied. Any use is at your own risk. |
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10 * |
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11 * Permission to use or copy this software for any purpose is hereby granted |
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12 * without fee, provided the above notices are retained on all copies. |
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13 * Permission to modify the code and to distribute modified code is granted, |
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14 * provided the above notices are retained, and a notice that the code was |
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15 * modified is included with the above copyright notice. |
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16 * |
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17 */ |
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18 |
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19 #ifndef _STLP_IOMANIP |
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20 #define _STLP_IOMANIP |
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21 |
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22 #ifndef _STLP_OUTERMOST_HEADER_ID |
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23 # define _STLP_OUTERMOST_HEADER_ID 0x1030 |
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24 # include <stl/_prolog.h> |
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25 #endif |
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26 |
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27 #ifdef _STLP_PRAGMA_ONCE |
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28 # pragma once |
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29 #endif |
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30 |
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31 #include <stl/_ioserr.h> |
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32 #include <stl/_istream.h> // Includes <ostream> and <ios> |
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33 |
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34 _STLP_BEGIN_NAMESPACE |
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35 |
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36 //---------------------------------------------------------------------- |
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37 // Machinery for defining manipulators. |
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38 |
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39 // Class that calls one of ios_base's single-argument member functions. |
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40 template <class _Arg> |
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41 struct _Ios_Manip_1 { |
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42 typedef _Arg (ios_base::*__f_ptr_type)(_Arg); |
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43 |
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44 _Ios_Manip_1(__f_ptr_type __f, const _Arg& __arg) |
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45 : _M_f(__f), _M_arg(__arg) {} |
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46 |
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47 void operator()(ios_base& __ios) const |
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48 { (__ios.*_M_f)(_M_arg); } |
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49 |
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50 __f_ptr_type _M_f; |
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51 _Arg _M_arg; |
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52 }; |
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53 |
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54 // Class that calls one of ios_base's two-argument member functions. |
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55 struct _Ios_Setf_Manip { |
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56 ios_base::fmtflags _M_flag; |
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57 ios_base::fmtflags _M_mask; |
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58 bool _M_two_args; |
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59 |
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60 _Ios_Setf_Manip(ios_base::fmtflags __f) |
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61 : _M_flag(__f), _M_mask(0), _M_two_args(false) {} |
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62 |
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63 _Ios_Setf_Manip(ios_base::fmtflags __f, ios_base::fmtflags __m) |
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64 : _M_flag(__f), _M_mask(__m), _M_two_args(true) {} |
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65 |
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66 void operator()(ios_base& __ios) const { |
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67 if (_M_two_args) |
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68 __ios.setf(_M_flag, _M_mask); |
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69 else |
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70 __ios.setf(_M_flag); |
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71 } |
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72 }; |
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73 |
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74 |
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75 template <class _CharT, class _Traits, class _Arg> |
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76 inline basic_istream<_CharT, _Traits>& _STLP_CALL |
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77 operator>>(basic_istream<_CharT, _Traits>& __istr, |
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78 const _Ios_Manip_1<_Arg>& __f) { |
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79 __f(__istr); |
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80 return __istr; |
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81 } |
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82 |
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83 template <class _CharT, class _Traits, class _Arg> |
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84 inline basic_ostream<_CharT, _Traits>& _STLP_CALL |
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85 operator<<(basic_ostream<_CharT, _Traits>& __os, |
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86 const _Ios_Manip_1<_Arg>& __f) { |
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87 __f(__os); |
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88 return __os; |
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89 } |
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90 |
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91 template <class _CharT, class _Traits> |
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92 inline basic_istream<_CharT, _Traits>& _STLP_CALL |
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93 operator>>(basic_istream<_CharT, _Traits>& __istr, const _Ios_Setf_Manip& __f) { |
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94 __f(__istr); |
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95 return __istr; |
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96 } |
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97 |
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98 template <class _CharT, class _Traits> |
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99 inline basic_ostream<_CharT, _Traits>& _STLP_CALL |
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100 operator<<(basic_ostream<_CharT, _Traits>& __os, const _Ios_Setf_Manip& __f) { |
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101 __f(__os); |
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102 return __os; |
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103 } |
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104 |
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105 //---------------------------------------------------------------------- |
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106 // The ios_base manipulators. |
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107 inline _Ios_Setf_Manip _STLP_CALL resetiosflags(ios_base::fmtflags __mask) |
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108 { return _Ios_Setf_Manip(0, __mask); } |
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109 |
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110 inline _Ios_Setf_Manip _STLP_CALL setiosflags(ios_base::fmtflags __flag) |
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111 { return _Ios_Setf_Manip(__flag); } |
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112 |
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113 inline _Ios_Setf_Manip _STLP_CALL setbase(int __n) { |
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114 ios_base::fmtflags __base = __n == 8 ? ios_base::oct : |
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115 __n == 10 ? ios_base::dec : |
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116 __n == 16 ? ios_base::hex : |
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117 ios_base::fmtflags(0); |
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118 return _Ios_Setf_Manip(__base, ios_base::basefield); |
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119 } |
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120 |
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121 inline _Ios_Manip_1<streamsize> _STLP_CALL |
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122 setprecision(int __n) { |
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123 _Ios_Manip_1<streamsize>::__f_ptr_type __f = &ios_base::precision; |
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124 return _Ios_Manip_1<streamsize>(__f, __n); |
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125 } |
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126 |
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127 inline _Ios_Manip_1<streamsize> _STLP_CALL |
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128 setw(int __n) { |
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129 _Ios_Manip_1<streamsize>::__f_ptr_type __f = &ios_base::width; |
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130 return _Ios_Manip_1<streamsize>(__f, __n); |
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131 } |
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132 |
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133 //---------------------------------------------------------------------- |
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134 // setfill, a manipulator that operates on basic_ios<> instead of ios_base. |
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135 |
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136 template <class _CharT> |
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137 struct _Setfill_Manip { |
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138 _Setfill_Manip(_CharT __c) : _M_c(__c) {} |
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139 _CharT _M_c; |
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140 }; |
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141 |
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142 template <class _CharT, class _CharT2, class _Traits> |
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143 inline basic_ostream<_CharT, _Traits>& _STLP_CALL |
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144 operator<<(basic_ostream<_CharT, _Traits>& __os, |
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145 const _Setfill_Manip<_CharT2>& __m) { |
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146 __os.fill(__m._M_c); |
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147 return __os; |
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148 } |
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149 |
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150 template <class _CharT, class _CharT2, class _Traits> |
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151 inline basic_istream<_CharT, _Traits>& _STLP_CALL |
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152 operator>>(basic_istream<_CharT, _Traits>& __is, |
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153 const _Setfill_Manip<_CharT2>& __m) { |
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154 __is.fill(__m._M_c); |
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155 return __is; |
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156 } |
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157 |
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158 template <class _CharT> |
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159 inline _Setfill_Manip<_CharT> _STLP_CALL |
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160 setfill(_CharT __c) { |
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161 return _Setfill_Manip<_CharT>(__c); |
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162 } |
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163 |
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164 _STLP_END_NAMESPACE |
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165 |
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166 #if (_STLP_OUTERMOST_HEADER_ID == 0x1030) |
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167 # include <stl/_epilog.h> |
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168 # undef _STLP_OUTERMOST_HEADER_ID |
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169 #endif |
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170 |
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171 #endif /* _STLP_IOMANIP */ |
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172 |
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173 // Local Variables: |
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174 // mode:C++ |
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175 // End: |