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<a href="a00068.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// File based streams -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 1997-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file include/fstream</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is a Standard C++ Library header.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">//</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// ISO C++ 14882: 27.8 File-based streams</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">//</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#ifndef _GLIBCXX_FSTREAM</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#define _GLIBCXX_FSTREAM 1</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#pragma GCC system_header</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <<a class="code" href="a00089.html">istream</a>></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <<a class="code" href="a00116.html">ostream</a>></span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include <<a class="code" href="a00305.html">bits/codecvt.h</a>></span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include <<a class="code" href="a00239.html">cstdio</a>></span> <span class="comment">// For BUFSIZ</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include <<a class="code" href="a00650.html">bits/basic_file.h</a>></span> <span class="comment">// For __basic_file, __c_lock</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include <<a class="code" href="a00152.html">string</a>></span> <span class="comment">// For std::string overloads.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">namespace </span><a class="code" href="a01538.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// Enable if _Path is a filesystem::path or experimental::filesystem::path</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path, <span class="keyword">typename</span> _Result = _Path, <span class="keyword">typename</span> _Path2</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  = decltype(std::declval<_Path&>().make_preferred().filename())></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">using</span> _If_fs_path = enable_if_t<is_same_v<_Path, _Path2>, _Result>;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// [27.8.1.1] template class basic_filebuf</span><span class="comment"></span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> /**</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> * @brief The actual work of input and output (for files).</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * @ingroup io</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> *</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> * @tparam _CharT Type of character stream.</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * @tparam _Traits Traits for character type, defaults to</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * char_traits<_CharT>.</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> *</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * This class associates both its input and output sequence with an</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * external disk file, and maintains a joint file position for both</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> * sequences. Many of its semantics are described in terms of similar</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * behavior in the Standard C Library's @c FILE streams.</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> *</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> * Requirements on traits_type, specific to this class:</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * - traits_type::pos_type must be fpos<traits_type::state_type></span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * - traits_type::off_type must be streamoff</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * - traits_type::state_type must be Assignable and DefaultConstructible,</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * - traits_type::state_type() must be the initial state for codecvt.</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> */</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits></div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="a02060.html"> 80</a></span>  <span class="keyword">class </span><a class="code" href="a02060.html">basic_filebuf</a> : <span class="keyword">public</span> <a class="code" href="a02452.html">basic_streambuf</a><_CharT, _Traits></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">using</span> __chk_state = __and_<is_copy_assignable<_Tp>,</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="a03592.html">is_copy_constructible<_Tp></a>,</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="a03576.html">is_default_constructible<_Tp></a>>;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  static_assert(__chk_state<typename _Traits::state_type>::value,</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="stringliteral">"state_type must be CopyAssignable, CopyConstructible"</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="stringliteral">" and DefaultConstructible"</span>);</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  static_assert(<a class="code" href="a03880.html">is_same</a><<span class="keyword">typename</span> _Traits::pos_type,</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="a06172.html">fpos<typename _Traits::state_type></a>>::value,</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="stringliteral">"pos_type must be fpos<state_type>"</span>);</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// Types:</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">typedef</span> _CharT char_type;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">typedef</span> _Traits traits_type;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type int_type;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type pos_type;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type off_type;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">typedef</span> <a class="code" href="a02452.html">basic_streambuf<char_type, traits_type></a> <a class="code" href="a02452.html">__streambuf_type</a>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">typedef</span> <a class="code" href="a02060.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a02060.html">__filebuf_type</a>;</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">typedef</span> __basic_file<char> __file_type;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::state_type __state_type;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">typedef</span> <a class="code" href="a05136.html">codecvt<char_type, char, __state_type></a> <a class="code" href="a05136.html">__codecvt_type</a>;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a05796.html">ios_base</a>; <span class="comment">// For sync_with_stdio.</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// Data Members:</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">// MT lock inherited from libio or other low-level io library.</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  __c_lock _M_lock;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// External buffer.</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  __file_type _M_file;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"></span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> /// Place to stash in || out || in | out settings for current filebuf.</span></div><div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="a02060.html#a14cdd23152cee458aaa655cf9508f9a6"> 121</a></span> <span class="comment"></span> ios_base::openmode <a class="code" href="a02060.html#a14cdd23152cee458aaa655cf9508f9a6">_M_mode</a>;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">// Beginning state type for codecvt.</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  __state_type _M_state_beg;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// During output, the state that corresponds to pptr(),</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// during input, the state that corresponds to egptr() and</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// _M_ext_next.</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  __state_type _M_state_cur;</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// Not used for output. During input, the state that corresponds</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// to eback() and _M_ext_buf.</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  __state_type _M_state_last;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"></span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> /// Pointer to the beginning of internal buffer.</span></div><div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07"> 136</a></span> <span class="comment"></span> <a class="code" href="a02452.html#a38ad1721a50a96c7d37d51a3f858a0cf">char_type</a>* <a class="code" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">_M_buf</a>;</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"></span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> /**</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> * Actual size of internal buffer. This number is equal to the size</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> * of the put area + 1 position, reserved for the overflow char of</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> * a full area.</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> */</span></div><div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="a02060.html#a59de9f582ce410ea2c7583eaf4228e2f"> 143</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="a02060.html#a59de9f582ce410ea2c7583eaf4228e2f">_M_buf_size</a>;</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">// Set iff _M_buf is allocated memory from _M_allocate_internal_buffer.</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordtype">bool</span> _M_buf_allocated;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"></span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> /**</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> * _M_reading == false && _M_writing == false for @b uncommitted mode;</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> * _M_reading == true for @b read mode;</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> * _M_writing == true for @b write mode;</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> *</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> * NB: _M_reading == true && _M_writing == true is unused.</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> */</span></div><div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="a02060.html#acde765e7a5ddaca79683176fe981cec1"> 155</a></span>  <span class="keywordtype">bool</span> <a class="code" href="a02060.html#acde765e7a5ddaca79683176fe981cec1">_M_reading</a>;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">bool</span> _M_writing;</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"></span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> //@{</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"></span><span class="comment"> /**</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> * Necessary bits for putback buffer management.</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> *</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> * @note pbacks of over one character are not currently supported.</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> */</span></div><div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="a02060.html#a0763759a2b15f0d18f869978aded8f84"> 164</a></span>  <a class="code" href="a02452.html#a38ad1721a50a96c7d37d51a3f858a0cf">char_type</a> <a class="code" href="a02060.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a>;</div><div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="a02060.html#a293a2014b3f6801df3764e2c502e6e25"> 165</a></span>  <a class="code" href="a02452.html#a38ad1721a50a96c7d37d51a3f858a0cf">char_type</a>* <a class="code" href="a02060.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a>;</div><div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="a02060.html#a65dce41d776ab7f376607436e7c5455c"> 166</a></span>  <a class="code" href="a02452.html#a38ad1721a50a96c7d37d51a3f858a0cf">char_type</a>* <a class="code" href="a02060.html#a65dce41d776ab7f376607436e7c5455c">_M_pback_end_save</a>;</div><div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="a02060.html#aa144642d688ad4c36807ce149e632995"> 167</a></span>  <span class="keywordtype">bool</span> <a class="code" href="a02060.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a>;<span class="comment"></span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> //@}</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"></span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// Cached codecvt facet.</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">const</span> <a class="code" href="a05136.html">__codecvt_type</a>* _M_codecvt;</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"></span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> /**</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> * Buffer for external characters. Used for input when</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * codecvt::always_noconv() == false. When valid, this corresponds</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> * to eback().</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> */</span></div><div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="a02060.html#a65f15e25bc11ffc20ca24e1c437ee5c0"> 178</a></span>  <span class="keywordtype">char</span>* <a class="code" href="a02060.html#a65f15e25bc11ffc20ca24e1c437ee5c0">_M_ext_buf</a>;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"></span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"> /**</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> * Size of buffer held by _M_ext_buf.</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"> */</span></div><div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="a02060.html#a284d196740028e4047586fe923e7a595"> 183</a></span>  <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a> <a class="code" href="a02060.html#a284d196740028e4047586fe923e7a595">_M_ext_buf_size</a>;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"></span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment"> /**</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> * Pointers into the buffer held by _M_ext_buf that delimit a</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> * subsequence of bytes that have been read but not yet converted.</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> * When valid, _M_ext_next corresponds to egptr().</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> */</span></div><div class="line"><a name="l00190"></a><span class="lineno"><a class="line" href="a02060.html#af4a3bae8038d32dffd03676c93feccbc"> 190</a></span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="a02060.html#af4a3bae8038d32dffd03676c93feccbc">_M_ext_next</a>;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordtype">char</span>* _M_ext_end;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment"></span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"> /**</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> * Initializes pback buffers, and moves normal buffers to safety.</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> * Assumptions:</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> * _M_in_cur has already been moved back</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> */</span></div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00199"></a><span class="lineno"><a class="line" href="a02060.html#ac4c7480aea8087a568d10b87a06b4d4e"> 199</a></span>  <a class="code" href="a02060.html#ac4c7480aea8087a568d10b87a06b4d4e">_M_create_pback</a>()</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (!<a class="code" href="a02060.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a>)</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  {</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <a class="code" href="a02060.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a> = this-><a class="code" href="a02452.html#a344bded2a1c24ffcea69a918e7dc6c6f">gptr</a>();</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  _M_pback_end_save = this-><a class="code" href="a02452.html#ad02de7bae6f055a7b112aeef35a08d9b">egptr</a>();</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  this-><a class="code" href="a02452.html#a38c9b562c20b30bf9d21cf0e4dc90356">setg</a>(&_M_pback, &<a class="code" href="a02060.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a>, &<a class="code" href="a02060.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a> + 1);</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <a class="code" href="a02060.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a> = <span class="keyword">true</span>;</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  }</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment"></span></div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="comment"> /**</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"> * Deactivates pback buffer contents, and restores normal buffer.</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"> * Assumptions:</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment"> * The pback buffer has only moved forward.</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> */</span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00216"></a><span class="lineno"><a class="line" href="a02060.html#a7b95d650e7a161b18ca9fcbd3f792253"> 216</a></span>  <a class="code" href="a02060.html#a7b95d650e7a161b18ca9fcbd3f792253">_M_destroy_pback</a>() throw()</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  {</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (<a class="code" href="a02060.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a>)</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  {</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">// Length _M_in_cur moved in the pback buffer.</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <a class="code" href="a02060.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a> += this-><a class="code" href="a02452.html#a344bded2a1c24ffcea69a918e7dc6c6f">gptr</a>() != this-><a class="code" href="a02452.html#aa15c80d916ef8065138eb6bd5b3ae1ef">eback</a>();</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  this-><a class="code" href="a02452.html#a38c9b562c20b30bf9d21cf0e4dc90356">setg</a>(_M_buf, <a class="code" href="a02060.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a>, <a class="code" href="a02060.html#a65dce41d776ab7f376607436e7c5455c">_M_pback_end_save</a>);</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <a class="code" href="a02060.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a> = <span class="keyword">false</span>;</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// Constructors/destructor:</span><span class="comment"></span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment"> /**</span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"> * @brief Does not open any files.</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> *</span></div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> * The default constructor initializes the parent class using its</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> * own default ctor.</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"> */</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <a class="code" href="a02060.html#add2d16a8965c490cd9b4cc95b958e09f">basic_filebuf</a>();</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <a class="code" href="a02060.html#add2d16a8965c490cd9b4cc95b958e09f">basic_filebuf</a>(<span class="keyword">const</span> <a class="code" href="a02060.html">basic_filebuf</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <a class="code" href="a02060.html#add2d16a8965c490cd9b4cc95b958e09f">basic_filebuf</a>(<a class="code" href="a02060.html">basic_filebuf</a>&&);</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment"></span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="comment"> /**</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="comment"> * @brief The destructor closes the file first.</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment"> */</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keyword">virtual</span></div><div class="line"><a name="l00246"></a><span class="lineno"><a class="line" href="a02060.html#a226a8efc1add60c0fc04ce2714a56b4c"> 246</a></span>  <a class="code" href="a02060.html#a226a8efc1add60c0fc04ce2714a56b4c">~basic_filebuf</a>()</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  { this-><a class="code" href="a02060.html#a5e13a128abb0a5dd8ef1e3d10597031f">close</a>(); }</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span> </div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <a class="code" href="a02060.html">basic_filebuf</a>& operator=(<span class="keyword">const</span> <a class="code" href="a02060.html">basic_filebuf</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <a class="code" href="a02060.html">basic_filebuf</a>& operator=(<a class="code" href="a02060.html">basic_filebuf</a>&&);</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordtype">void</span> <a class="code" href="a01538.html#a7ccd229f5faee26395b8ee1715576cf0">swap</a>(<a class="code" href="a02060.html">basic_filebuf</a>&);</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// Members:</span><span class="comment"></span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment"> /**</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment"> * @brief Returns true if the external file is open.</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment"> */</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00260"></a><span class="lineno"><a class="line" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f"> 260</a></span>  <a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>() <span class="keyword">const</span> throw()</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  { <span class="keywordflow">return</span> _M_file.is_open(); }</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"></span></div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> /**</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment"> * @return @c this on success, NULL on failure</span></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment"> *</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment"> * If a file is already open, this function immediately fails.</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment"> * Otherwise it tries to open the file named @a __s using the flags</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="comment"> * given in @a __mode.</span></div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"> *</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="comment"> * Table 92, adapted here, gives the relation between openmode</span></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment"> * combinations and the equivalent @c fopen() flags.</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> * (NB: lines app, in|out|app, in|app, binary|app, binary|in|out|app,</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> * and binary|in|app per DR 596)</span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> * <pre></span></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment"> * +---------------------------------------------------------+</span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> * | ios_base Flag combination stdio equivalent |</span></div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> * |binary in out trunc app |</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> * +---------------------------------------------------------+</span></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> * | + w |</span></div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> * | + + a |</span></div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment"> * | + a |</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment"> * | + + w |</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment"> * | + r |</span></div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment"> * | + + r+ |</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> * | + + + w+ |</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment"> * | + + + a+ |</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment"> * | + + a+ |</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment"> * +---------------------------------------------------------+</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="comment"> * | + + wb |</span></div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="comment"> * | + + + ab |</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="comment"> * | + + ab |</span></div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="comment"> * | + + + wb |</span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="comment"> * | + + rb |</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="comment"> * | + + + r+b |</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="comment"> * | + + + + w+b |</span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="comment"> * | + + + + a+b |</span></div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="comment"> * | + + + a+b |</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="comment"> * +---------------------------------------------------------+</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="comment"> * </pre></span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment"> */</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  __filebuf_type*</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode);</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="comment"> /**</span></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="comment"> * @return @c this on success, NULL on failure</span></div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment"> */</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  __filebuf_type*</div><div class="line"><a name="l00315"></a><span class="lineno"><a class="line" href="a02060.html#a541062313b01b7bb74af2582f88a365f"> 315</a></span>  <a class="code" href="a02060.html#a541062313b01b7bb74af2582f88a365f">open</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s, ios_base::openmode __mode)</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  { <span class="keywordflow">return</span> <a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s.<a class="code" href="a04768.html#a1c644c6d7fe3a686d752a9aecb99da0c">c_str</a>(), __mode); }</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="comment"> /**</span></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="comment"> * @param __s The name of the file, as a filesystem::path.</span></div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="comment"> * @return @c this on success, NULL on failure</span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="comment"> */</span></div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path></div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  _If_fs_path<_Path, __filebuf_type*></div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(<span class="keyword">const</span> _Path& __s, ios_base::openmode __mode)</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  { <span class="keywordflow">return</span> <a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s.c_str(), __mode); }</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> <span class="preprocessor">#endif // C++11</span></div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment"></span></div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment"> /**</span></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment"> * @brief Closes the currently associated file.</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment"> * @return @c this on success, NULL on failure</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="comment"> *</span></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment"> * If no file is currently open, this function immediately fails.</span></div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="comment"> *</span></div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment"> * If a <em>put buffer area</em> exists, @c overflow(eof) is</span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment"> * called to flush all the characters. The file is then</span></div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="comment"> * closed.</span></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="comment"> *</span></div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="comment"> * If any operations fail, this function also fails.</span></div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment"> */</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  __filebuf_type*</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <a class="code" href="a02060.html#a5e13a128abb0a5dd8ef1e3d10597031f">close</a>();</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span> </div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  _M_allocate_internal_buffer();</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  _M_destroy_internal_buffer() throw();</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span> </div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">// [27.8.1.4] overridden virtual functions</span></div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  virtual <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a></div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <a class="code" href="a02060.html#a0e8e4218ba9766e34b74e69b17fb28b3">showmanyc</a>();</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span> </div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="comment">// Stroustrup, 1998, p. 628</span></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="comment">// underflow() and uflow() functions are called to get the next</span></div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="comment">// character from the real input source when the buffer is empty.</span></div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="comment">// Buffered input uses underflow()</span></div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  virtual int_type</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <a class="code" href="a02060.html#a051ec9d0aa68d3bbf3a2b8cb2e41c93b">underflow</a>();</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  virtual int_type</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  pbackfail(int_type __c = _Traits::eof());</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span> </div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="comment">// Stroustrup, 1998, p 648</span></div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="comment">// The overflow() function is called to transfer characters to the</span></div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="comment">// real output destination when the buffer is full. A call to</span></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="comment">// overflow(c) outputs the contents of the buffer plus the</span></div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// character c.</span></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// 27.5.2.4.5</span></div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// Consume some sequence of the characters in the pending sequence.</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  virtual int_type</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  overflow(int_type __c = _Traits::eof());</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span> </div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">// Convert internal byte sequence to external, char-based</span></div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="comment">// sequence via codecvt.</span></div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  _M_convert_to_external(char_type*, <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a>);</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="comment"></span></div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span> <span class="comment"> /**</span></div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="comment"> * @brief Manipulates the buffer.</span></div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span> <span class="comment"> * @param __s Pointer to a buffer area.</span></div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="comment"> * @param __n Size of @a __s.</span></div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="comment"> * @return @c this</span></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="comment"> *</span></div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="comment"> * If no file has been opened, and both @a __s and @a __n are zero, then</span></div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="comment"> * the stream becomes unbuffered. Otherwise, @c __s is used as a</span></div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="comment"> * buffer; see</span></div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="comment"> * https://gcc.gnu.org/onlinedocs/libstdc++/manual/streambufs.html#io.streambuf.buffering</span></div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="comment"> * for more.</span></div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="comment"> */</span></div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  virtual __streambuf_type*</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <a class="code" href="a02060.html#afdc468aedafb80e43f14569d09485e6b">setbuf</a>(char_type* __s, <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a> __n);</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  virtual pos_type</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <a class="code" href="a02060.html#a0152beebcac8c9542b6b0efe3de5bbfb">seekoff</a>(off_type __off, ios_base::seekdir __way,</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  ios_base::openmode __mode = ios_base::in | ios_base::out);</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> </div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  virtual pos_type</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <a class="code" href="a02060.html#a91365d684bb298cb7ad42e3c73cd0252">seekpos</a>(pos_type __pos,</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  ios_base::openmode __mode = ios_base::in | ios_base::out);</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// Common code for seekoff, seekpos, and overflow</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  pos_type</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  _M_seek(off_type __off, ios_base::seekdir __way, __state_type __state);</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span> </div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="keywordtype">int</span></div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  _M_get_ext_pos(__state_type &__state);</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  virtual <span class="keywordtype">int</span></div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <a class="code" href="a02060.html#af42cd30ec66c6eb0df56026098b6e04f">sync</a>();</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  virtual <span class="keywordtype">void</span></div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  imbue(const locale& __loc);</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  virtual <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a></div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <a class="code" href="a02060.html#a4fb6d662a8351a9c790be9fbe78be8b4">xsgetn</a>(char_type* __s, <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a> __n);</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span> </div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  virtual <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a></div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <a class="code" href="a02060.html#a9e78a1d5dec2c7eea816ada4e43d7576">xsputn</a>(const char_type* __s, <a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a> __n);</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span> </div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="comment">// Flushes output buffer, then writes unshift sequence.</span></div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  _M_terminate_output();</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="comment"></span></div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="comment"> /**</span></div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="comment"> * This function sets the pointers of the internal buffer, both get</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="comment"> * and put areas. Typically:</span></div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="comment"> *</span></div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="comment"> * __off == egptr() - eback() upon underflow/uflow (@b read mode);</span></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="comment"> * __off == 0 upon overflow (@b write mode);</span></div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="comment"> * __off == -1 upon open, setbuf, seekoff/pos (@b uncommitted mode).</span></div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="comment"> *</span></div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="comment"> * NB: epptr() - pbase() == _M_buf_size - 1, since _M_buf_size</span></div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="comment"> * reflects the actual allocated memory and the last cell is reserved</span></div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="comment"> * for the overflow char of a full put area.</span></div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="comment"> */</span></div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00443"></a><span class="lineno"><a class="line" href="a02060.html#af3d033b08f1641d4594fb5d21eb2db89"> 443</a></span>  <a class="code" href="a02060.html#af3d033b08f1641d4594fb5d21eb2db89">_M_set_buffer</a>(<a class="code" href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">streamsize</a> __off)</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  {</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testin = <a class="code" href="a02060.html#a14cdd23152cee458aaa655cf9508f9a6">_M_mode</a> & <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>;</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testout = (<a class="code" href="a02060.html#a14cdd23152cee458aaa655cf9508f9a6">_M_mode</a> & <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a></div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  || <a class="code" href="a02060.html#a14cdd23152cee458aaa655cf9508f9a6">_M_mode</a> & <a class="code" href="a05796.html#abc6732e5a0d9dc40b79e2fe6e32e7b09">ios_base::app</a>);</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span> </div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">if</span> (__testin && __off > 0)</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  this-><a class="code" href="a02452.html#a38c9b562c20b30bf9d21cf0e4dc90356">setg</a>(_M_buf, <a class="code" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">_M_buf</a>, <a class="code" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">_M_buf</a> + __off);</div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  this-><a class="code" href="a02452.html#a38c9b562c20b30bf9d21cf0e4dc90356">setg</a>(_M_buf, <a class="code" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">_M_buf</a>, <a class="code" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">_M_buf</a>);</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span> </div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">if</span> (__testout && __off == 0 && <a class="code" href="a02060.html#a59de9f582ce410ea2c7583eaf4228e2f">_M_buf_size</a> > 1 )</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  this-><a class="code" href="a02452.html#ab0f1b49870f87d288a737cd9f8f9ec00">setp</a>(_M_buf, <a class="code" href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">_M_buf</a> + <a class="code" href="a02060.html#a59de9f582ce410ea2c7583eaf4228e2f">_M_buf_size</a> - 1);</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  this-><a class="code" href="a02452.html#ab0f1b49870f87d288a737cd9f8f9ec00">setp</a>(0, 0);</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  }</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  };</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span> </div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="comment">// [27.8.1.5] Template class basic_ifstream</span><span class="comment"></span></div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="comment"> /**</span></div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span> <span class="comment"> * @brief Controlling input for files.</span></div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="comment"> * @ingroup io</span></div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <span class="comment"> *</span></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="comment"> * @tparam _CharT Type of character stream.</span></div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span> <span class="comment"> * @tparam _Traits Traits for character type, defaults to</span></div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="comment"> * char_traits<_CharT>.</span></div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <span class="comment"> *</span></div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="comment"> * This class supports reading from named files, using the inherited</span></div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span> <span class="comment"> * functions from std::basic_istream. To control the associated</span></div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span> <span class="comment"> * sequence, an instance of std::basic_filebuf is used, which this page</span></div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="comment"> * refers to as @c sb.</span></div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span> <span class="comment"> */</span></div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits></div><div class="line"><a name="l00476"></a><span class="lineno"><a class="line" href="a02064.html"> 476</a></span>  <span class="keyword">class </span><a class="code" href="a02064.html">basic_ifstream</a> : <span class="keyword">public</span> <a class="code" href="a02456.html">basic_istream</a><_CharT, _Traits></div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  {</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="comment">// Types:</span></div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keyword">typedef</span> _CharT char_type;</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keyword">typedef</span> _Traits traits_type;</div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type int_type;</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type pos_type;</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type off_type;</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span> </div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="comment">// Non-standard types:</span></div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keyword">typedef</span> <a class="code" href="a02060.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a02060.html">__filebuf_type</a>;</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keyword">typedef</span> <a class="code" href="a02456.html">basic_istream<char_type, traits_type></a> <a class="code" href="a02456.html">__istream_type</a>;</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span> </div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <a class="code" href="a02060.html">__filebuf_type</a> _M_filebuf;</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span> </div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">// Constructors/Destructors:</span><span class="comment"></span></div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="comment"> /**</span></div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span> <span class="comment"> * @brief Default constructor.</span></div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="comment"> *</span></div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="comment"> * Initializes @c sb using its default constructor, and passes</span></div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="comment"> * @c &sb to the base class initializer. Does not open any files</span></div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span> <span class="comment"> * (you haven't given it a filename to open).</span></div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="comment"> */</span></div><div class="line"><a name="l00502"></a><span class="lineno"><a class="line" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229"> 502</a></span>  <a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>() : <a class="code" href="a02456.html">__istream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  { this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf); }</div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span> <span class="comment"></span></div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="comment"> /**</span></div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span> <span class="comment"> * @brief Create an input file stream.</span></div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="comment"> * @param __s Null terminated string specifying the filename.</span></div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="comment"> *</span></div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="comment"> * @c ios_base::in is automatically included in @a __mode.</span></div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="comment"> */</span></div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00513"></a><span class="lineno"><a class="line" href="a02064.html#a83516a8e9d1db5ae7d2cf392b23dd840"> 513</a></span>  <a class="code" href="a02064.html#a83516a8e9d1db5ae7d2cf392b23dd840">basic_ifstream</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>)</div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  : <a class="code" href="a02456.html">__istream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  {</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf);</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  this-><a class="code" href="a02064.html#a642496a04b7adb81e614d2b3903734ff">open</a>(__s, __mode);</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  }</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span> </div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span> <span class="comment"> /**</span></div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span> <span class="comment"> * @brief Create an input file stream.</span></div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span> <span class="comment"> * @param __s std::string specifying the filename.</span></div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="comment"> *</span></div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span> <span class="comment"> * @c ios_base::in is automatically included in @a __mode.</span></div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span> <span class="comment"> */</span></div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00529"></a><span class="lineno"><a class="line" href="a02064.html#ad533b4e5d658fe6563d34b9ef36a9d7a"> 529</a></span>  <a class="code" href="a02064.html#ad533b4e5d658fe6563d34b9ef36a9d7a">basic_ifstream</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s,</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>)</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  : <a class="code" href="a02456.html">__istream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  {</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf);</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  this-><a class="code" href="a02064.html#a642496a04b7adb81e614d2b3903734ff">open</a>(__s, __mode);</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  }</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span> </div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span> <span class="comment"> /**</span></div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span> <span class="comment"> * @param Create an input file stream.</span></div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span> <span class="comment"> * @param __s filesystem::path specifying the filename.</span></div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span> <span class="comment"> *</span></div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span> <span class="comment"> * @c ios_base::in is automatically included in @a __mode.</span></div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span> <span class="comment"> */</span></div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path, <span class="keyword">typename</span> _Require = _If_fs_path<_Path>></div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>(<span class="keyword">const</span> _Path& __s,</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>)</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  : <a class="code" href="a02064.html">basic_ifstream</a>(__s.c_str(), __mode)</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  { }</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span> </div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>(<span class="keyword">const</span> <a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span> </div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>(<a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>&& __rhs)</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  : __istream_type(<a class="code" href="a01538.html">std</a>::move(__rhs)),</div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  _M_filebuf(<a class="code" href="a01538.html">std</a>::move(__rhs._M_filebuf))</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  { __istream_type::set_rdbuf(&_M_filebuf); }</div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="preprocessor">#endif // C++11</span></div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span> <span class="comment"></span></div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span> <span class="comment"> /**</span></div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span> <span class="comment"> * @brief The destructor does nothing.</span></div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span> <span class="comment"> *</span></div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span> <span class="comment"> * The file is closed by the filebuf object, not the formatting</span></div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span> <span class="comment"> * stream.</span></div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span> <span class="comment"> */</span></div><div class="line"><a name="l00566"></a><span class="lineno"><a class="line" href="a02064.html#a1bb90895f6ee2886b8e2dd9e033d31ad"> 566</a></span>  <a class="code" href="a02064.html#a1bb90895f6ee2886b8e2dd9e033d31ad">~basic_ifstream</a>()</div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  { }</div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span> </div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <span class="comment">// 27.8.3.2 Assign and swap:</span></div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span> </div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <a class="code" href="a02064.html">basic_ifstream</a>&</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  operator=(<span class="keyword">const</span> <a class="code" href="a02064.html">basic_ifstream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span> </div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <a class="code" href="a02064.html">basic_ifstream</a>&</div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  operator=(<a class="code" href="a02064.html">basic_ifstream</a>&& __rhs)</div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  {</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  __istream_type::operator=(std::move(__rhs));</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  _M_filebuf = std::move(__rhs._M_filebuf);</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  }</div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span> </div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  swap(<a class="code" href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">basic_ifstream</a>& __rhs)</div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  {</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  __istream_type::swap(__rhs);</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  _M_filebuf.swap(__rhs._M_filebuf);</div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  }</div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span> </div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="comment">// Members:</span><span class="comment"></span></div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span> <span class="comment"> /**</span></div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span> <span class="comment"> * @brief Accessing the underlying buffer.</span></div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span> <span class="comment"> * @return The current basic_filebuf buffer.</span></div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span> <span class="comment"> *</span></div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span> <span class="comment"> * This hides both signatures of std::basic_ios::rdbuf().</span></div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span> <span class="comment"> */</span></div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  __filebuf_type*</div><div class="line"><a name="l00599"></a><span class="lineno"><a class="line" href="a02064.html#a7f104c73e5bd5a76405a0edc299da3e2"> 599</a></span>  <a class="code" href="a02064.html#a7f104c73e5bd5a76405a0edc299da3e2">rdbuf</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> const_cast<__filebuf_type*>(&_M_filebuf); }</div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span> <span class="comment"></span></div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span> <span class="comment"> /**</span></div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span> <span class="comment"> * @brief Wrapper to test for an open file.</span></div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span> <span class="comment"> * @return @c rdbuf()->is_open()</span></div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span> <span class="comment"> */</span></div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00607"></a><span class="lineno"><a class="line" href="a02064.html#afcbe0c0931007c7359e16543abe1fe87"> 607</a></span>  <a class="code" href="a02064.html#afcbe0c0931007c7359e16543abe1fe87">is_open</a>()</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  { <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>(); }</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span> </div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="comment">// 365. Lack of const-qualification in clause 27</span></div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <a class="code" href="a02064.html#afcbe0c0931007c7359e16543abe1fe87">is_open</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>(); }</div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span> <span class="comment"></span></div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span> <span class="comment"> /**</span></div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span> <span class="comment"> *</span></div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span> <span class="comment"> * Calls @c std::basic_filebuf::open(s,__mode|in). If that function</span></div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span> <span class="comment"> * fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span> <span class="comment"> */</span></div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00625"></a><span class="lineno"><a class="line" href="a02064.html#a642496a04b7adb81e614d2b3903734ff"> 625</a></span>  <a class="code" href="a02064.html#a642496a04b7adb81e614d2b3903734ff">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>)</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  {</div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s, __mode | <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>))</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="comment">// 409. Closing an fstream should clear error state</span></div><div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  this-><a class="code" href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">clear</a>();</div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  }</div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span> </div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span> <span class="comment"> /**</span></div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span> <span class="comment"> *</span></div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode|in). If that function</span></div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span> <span class="comment"> * fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span> <span class="comment"> */</span></div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00645"></a><span class="lineno"><a class="line" href="a02064.html#ab7c7c2bf6e27152bb0460c83c32ab431"> 645</a></span>  <a class="code" href="a02064.html#ab7c7c2bf6e27152bb0460c83c32ab431">open</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>)</div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  {</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s, __mode | <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>))</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="comment">// 409. Closing an fstream should clear error state</span></div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  this-><a class="code" href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">clear</a>();</div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  }</div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span> </div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span> <span class="comment"> /**</span></div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span> <span class="comment"> * @param __s The name of the file, as a filesystem::path.</span></div><div class="line"><a name="l00659"></a><span class="lineno"> 659</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00660"></a><span class="lineno"> 660</span> <span class="comment"> *</span></div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode|in). If that function</span></div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span> <span class="comment"> * fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span> <span class="comment"> */</span></div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path></div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  _If_fs_path<_Path, void></div><div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <a class="code" href="a02064.html#a642496a04b7adb81e614d2b3903734ff">open</a>(<span class="keyword">const</span> _Path& __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>)</div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  { <a class="code" href="a02064.html#a642496a04b7adb81e614d2b3903734ff">open</a>(__s.c_str(), __mode); }</div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00669"></a><span class="lineno"> 669</span> <span class="preprocessor">#endif // C++11</span></div><div class="line"><a name="l00670"></a><span class="lineno"> 670</span> <span class="comment"></span></div><div class="line"><a name="l00671"></a><span class="lineno"> 671</span> <span class="comment"> /**</span></div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span> <span class="comment"> * @brief Close the file.</span></div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span> <span class="comment"> *</span></div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span> <span class="comment"> * Calls @c std::basic_filebuf::close(). If that function</span></div><div class="line"><a name="l00675"></a><span class="lineno"> 675</span> <span class="comment"> * fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00676"></a><span class="lineno"> 676</span> <span class="comment"> */</span></div><div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00678"></a><span class="lineno"><a class="line" href="a02064.html#adca6a6b93f9f3ae1c9393213caa37a9a"> 678</a></span>  <a class="code" href="a02064.html#adca6a6b93f9f3ae1c9393213caa37a9a">close</a>()</div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  {</div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#a5e13a128abb0a5dd8ef1e3d10597031f">close</a>())</div><div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  }</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  };</div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span> </div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span> </div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="comment">// [27.8.1.8] Template class basic_ofstream</span><span class="comment"></span></div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span> <span class="comment"> /**</span></div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span> <span class="comment"> * @brief Controlling output for files.</span></div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span> <span class="comment"> * @ingroup io</span></div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span> <span class="comment"> *</span></div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span> <span class="comment"> * @tparam _CharT Type of character stream.</span></div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span> <span class="comment"> * @tparam _Traits Traits for character type, defaults to</span></div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span> <span class="comment"> * char_traits<_CharT>.</span></div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span> <span class="comment"> *</span></div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span> <span class="comment"> * This class supports reading from named files, using the inherited</span></div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span> <span class="comment"> * functions from std::basic_ostream. To control the associated</span></div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="comment"> * sequence, an instance of std::basic_filebuf is used, which this page</span></div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span> <span class="comment"> * refers to as @c sb.</span></div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span> <span class="comment"> */</span></div><div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits></div><div class="line"><a name="l00701"></a><span class="lineno"><a class="line" href="a02068.html"> 701</a></span>  <span class="keyword">class </span><a class="code" href="a02068.html">basic_ofstream</a> : <span class="keyword">public</span> <a class="code" href="a02460.html">basic_ostream</a><_CharT,_Traits></div><div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  {</div><div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="comment">// Types:</span></div><div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keyword">typedef</span> _CharT char_type;</div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keyword">typedef</span> _Traits traits_type;</div><div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type int_type;</div><div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type pos_type;</div><div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type off_type;</div><div class="line"><a name="l00710"></a><span class="lineno"> 710</span> </div><div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="comment">// Non-standard types:</span></div><div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keyword">typedef</span> <a class="code" href="a02060.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a02060.html">__filebuf_type</a>;</div><div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="keyword">typedef</span> <a class="code" href="a02460.html">basic_ostream<char_type, traits_type></a> <a class="code" href="a02460.html">__ostream_type</a>;</div><div class="line"><a name="l00714"></a><span class="lineno"> 714</span> </div><div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <a class="code" href="a02060.html">__filebuf_type</a> _M_filebuf;</div><div class="line"><a name="l00717"></a><span class="lineno"> 717</span> </div><div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <span class="comment">// Constructors:</span><span class="comment"></span></div><div class="line"><a name="l00720"></a><span class="lineno"> 720</span> <span class="comment"> /**</span></div><div class="line"><a name="l00721"></a><span class="lineno"> 721</span> <span class="comment"> * @brief Default constructor.</span></div><div class="line"><a name="l00722"></a><span class="lineno"> 722</span> <span class="comment"> *</span></div><div class="line"><a name="l00723"></a><span class="lineno"> 723</span> <span class="comment"> * Initializes @c sb using its default constructor, and passes</span></div><div class="line"><a name="l00724"></a><span class="lineno"> 724</span> <span class="comment"> * @c &sb to the base class initializer. Does not open any files</span></div><div class="line"><a name="l00725"></a><span class="lineno"> 725</span> <span class="comment"> * (you haven't given it a filename to open).</span></div><div class="line"><a name="l00726"></a><span class="lineno"> 726</span> <span class="comment"> */</span></div><div class="line"><a name="l00727"></a><span class="lineno"><a class="line" href="a02068.html#a19f5b05d46380f7866b1212413d6c046"> 727</a></span>  <a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>(): <a class="code" href="a02460.html">__ostream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  { this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf); }</div><div class="line"><a name="l00729"></a><span class="lineno"> 729</span> <span class="comment"></span></div><div class="line"><a name="l00730"></a><span class="lineno"> 730</span> <span class="comment"> /**</span></div><div class="line"><a name="l00731"></a><span class="lineno"> 731</span> <span class="comment"> * @brief Create an output file stream.</span></div><div class="line"><a name="l00732"></a><span class="lineno"> 732</span> <span class="comment"> * @param __s Null terminated string specifying the filename.</span></div><div class="line"><a name="l00733"></a><span class="lineno"> 733</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span> <span class="comment"> *</span></div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span> <span class="comment"> * @c ios_base::out is automatically included in @a __mode.</span></div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span> <span class="comment"> */</span></div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00738"></a><span class="lineno"><a class="line" href="a02068.html#a498255bc11415cc1297260481e1384e7"> 738</a></span>  <a class="code" href="a02068.html#a498255bc11415cc1297260481e1384e7">basic_ofstream</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,</div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  : <a class="code" href="a02460.html">__ostream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  {</div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf);</div><div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  this-><a class="code" href="a02068.html#a81f26964cd5c6cc8d3e833735f606646">open</a>(__s, __mode);</div><div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  }</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span> </div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span> <span class="comment"> /**</span></div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span> <span class="comment"> * @brief Create an output file stream.</span></div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span> <span class="comment"> * @param __s std::string specifying the filename.</span></div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span> <span class="comment"> *</span></div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span> <span class="comment"> * @c ios_base::out is automatically included in @a __mode.</span></div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span> <span class="comment"> */</span></div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00755"></a><span class="lineno"><a class="line" href="a02068.html#aa8b35d6ebca2ad10560c37fdeb6f959f"> 755</a></span>  <a class="code" href="a02068.html#aa8b35d6ebca2ad10560c37fdeb6f959f">basic_ofstream</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s,</div><div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  : <a class="code" href="a02460.html">__ostream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  {</div><div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf);</div><div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  this-><a class="code" href="a02068.html#a81f26964cd5c6cc8d3e833735f606646">open</a>(__s, __mode);</div><div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  }</div><div class="line"><a name="l00762"></a><span class="lineno"> 762</span> </div><div class="line"><a name="l00763"></a><span class="lineno"> 763</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00764"></a><span class="lineno"> 764</span> <span class="comment"> /**</span></div><div class="line"><a name="l00765"></a><span class="lineno"> 765</span> <span class="comment"> * @param Create an output file stream.</span></div><div class="line"><a name="l00766"></a><span class="lineno"> 766</span> <span class="comment"> * @param __s filesystem::path specifying the filename.</span></div><div class="line"><a name="l00767"></a><span class="lineno"> 767</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00768"></a><span class="lineno"> 768</span> <span class="comment"> *</span></div><div class="line"><a name="l00769"></a><span class="lineno"> 769</span> <span class="comment"> * @c ios_base::out is automatically included in @a __mode.</span></div><div class="line"><a name="l00770"></a><span class="lineno"> 770</span> <span class="comment"> */</span></div><div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path, <span class="keyword">typename</span> _Require = _If_fs_path<_Path>></div><div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>(<span class="keyword">const</span> _Path& __s,</div><div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  : <a class="code" href="a02068.html">basic_ofstream</a>(__s.c_str(), __mode)</div><div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  { }</div><div class="line"><a name="l00776"></a><span class="lineno"> 776</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00777"></a><span class="lineno"> 777</span> </div><div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>(<span class="keyword">const</span> <a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span> </div><div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>(<a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>&& __rhs)</div><div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  : __ostream_type(<a class="code" href="a01538.html">std</a>::move(__rhs)),</div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  _M_filebuf(<a class="code" href="a01538.html">std</a>::move(__rhs._M_filebuf))</div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  { __ostream_type::set_rdbuf(&_M_filebuf); }</div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00785"></a><span class="lineno"> 785</span> <span class="comment"></span></div><div class="line"><a name="l00786"></a><span class="lineno"> 786</span> <span class="comment"> /**</span></div><div class="line"><a name="l00787"></a><span class="lineno"> 787</span> <span class="comment"> * @brief The destructor does nothing.</span></div><div class="line"><a name="l00788"></a><span class="lineno"> 788</span> <span class="comment"> *</span></div><div class="line"><a name="l00789"></a><span class="lineno"> 789</span> <span class="comment"> * The file is closed by the filebuf object, not the formatting</span></div><div class="line"><a name="l00790"></a><span class="lineno"> 790</span> <span class="comment"> * stream.</span></div><div class="line"><a name="l00791"></a><span class="lineno"> 791</span> <span class="comment"> */</span></div><div class="line"><a name="l00792"></a><span class="lineno"><a class="line" href="a02068.html#ab140145d0cd1f4754cd4812a31760f58"> 792</a></span>  <a class="code" href="a02068.html#ab140145d0cd1f4754cd4812a31760f58">~basic_ofstream</a>()</div><div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  { }</div><div class="line"><a name="l00794"></a><span class="lineno"> 794</span> </div><div class="line"><a name="l00795"></a><span class="lineno"> 795</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="comment">// 27.8.3.2 Assign and swap:</span></div><div class="line"><a name="l00797"></a><span class="lineno"> 797</span> </div><div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  <a class="code" href="a02068.html">basic_ofstream</a>&</div><div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  operator=(<span class="keyword">const</span> <a class="code" href="a02068.html">basic_ofstream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l00800"></a><span class="lineno"> 800</span> </div><div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <a class="code" href="a02068.html">basic_ofstream</a>&</div><div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  operator=(<a class="code" href="a02068.html">basic_ofstream</a>&& __rhs)</div><div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  {</div><div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  __ostream_type::operator=(std::move(__rhs));</div><div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  _M_filebuf = std::move(__rhs._M_filebuf);</div><div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  }</div><div class="line"><a name="l00808"></a><span class="lineno"> 808</span> </div><div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  swap(<a class="code" href="a02068.html#a19f5b05d46380f7866b1212413d6c046">basic_ofstream</a>& __rhs)</div><div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  {</div><div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  __ostream_type::swap(__rhs);</div><div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  _M_filebuf.swap(__rhs._M_filebuf);</div><div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  }</div><div class="line"><a name="l00815"></a><span class="lineno"> 815</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00816"></a><span class="lineno"> 816</span> </div><div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  <span class="comment">// Members:</span><span class="comment"></span></div><div class="line"><a name="l00818"></a><span class="lineno"> 818</span> <span class="comment"> /**</span></div><div class="line"><a name="l00819"></a><span class="lineno"> 819</span> <span class="comment"> * @brief Accessing the underlying buffer.</span></div><div class="line"><a name="l00820"></a><span class="lineno"> 820</span> <span class="comment"> * @return The current basic_filebuf buffer.</span></div><div class="line"><a name="l00821"></a><span class="lineno"> 821</span> <span class="comment"> *</span></div><div class="line"><a name="l00822"></a><span class="lineno"> 822</span> <span class="comment"> * This hides both signatures of std::basic_ios::rdbuf().</span></div><div class="line"><a name="l00823"></a><span class="lineno"> 823</span> <span class="comment"> */</span></div><div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  __filebuf_type*</div><div class="line"><a name="l00825"></a><span class="lineno"><a class="line" href="a02068.html#ac507f40924f057de2f2c6ced401e6467"> 825</a></span>  <a class="code" href="a02068.html#ac507f40924f057de2f2c6ced401e6467">rdbuf</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00826"></a><span class="lineno"> 826</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> const_cast<__filebuf_type*>(&_M_filebuf); }</div><div class="line"><a name="l00827"></a><span class="lineno"> 827</span> <span class="comment"></span></div><div class="line"><a name="l00828"></a><span class="lineno"> 828</span> <span class="comment"> /**</span></div><div class="line"><a name="l00829"></a><span class="lineno"> 829</span> <span class="comment"> * @brief Wrapper to test for an open file.</span></div><div class="line"><a name="l00830"></a><span class="lineno"> 830</span> <span class="comment"> * @return @c rdbuf()->is_open()</span></div><div class="line"><a name="l00831"></a><span class="lineno"> 831</span> <span class="comment"> */</span></div><div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00833"></a><span class="lineno"><a class="line" href="a02068.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414"> 833</a></span>  <a class="code" href="a02068.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414">is_open</a>()</div><div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  { <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>(); }</div><div class="line"><a name="l00835"></a><span class="lineno"> 835</span> </div><div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <span class="comment">// 365. Lack of const-qualification in clause 27</span></div><div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <a class="code" href="a02068.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414">is_open</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00840"></a><span class="lineno"> 840</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>(); }</div><div class="line"><a name="l00841"></a><span class="lineno"> 841</span> <span class="comment"></span></div><div class="line"><a name="l00842"></a><span class="lineno"> 842</span> <span class="comment"> /**</span></div><div class="line"><a name="l00843"></a><span class="lineno"> 843</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00844"></a><span class="lineno"> 844</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l00845"></a><span class="lineno"> 845</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00846"></a><span class="lineno"> 846</span> <span class="comment"> *</span></div><div class="line"><a name="l00847"></a><span class="lineno"> 847</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode|out). If that</span></div><div class="line"><a name="l00848"></a><span class="lineno"> 848</span> <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00849"></a><span class="lineno"> 849</span> <span class="comment"> */</span></div><div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00851"></a><span class="lineno"><a class="line" href="a02068.html#a81f26964cd5c6cc8d3e833735f606646"> 851</a></span>  <a class="code" href="a02068.html#a81f26964cd5c6cc8d3e833735f606646">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  {</div><div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s, __mode | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>))</div><div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="comment">// 409. Closing an fstream should clear error state</span></div><div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  this-><a class="code" href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">clear</a>();</div><div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  }</div><div class="line"><a name="l00860"></a><span class="lineno"> 860</span> </div><div class="line"><a name="l00861"></a><span class="lineno"> 861</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00862"></a><span class="lineno"> 862</span> <span class="comment"> /**</span></div><div class="line"><a name="l00863"></a><span class="lineno"> 863</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00864"></a><span class="lineno"> 864</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l00865"></a><span class="lineno"> 865</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00866"></a><span class="lineno"> 866</span> <span class="comment"> *</span></div><div class="line"><a name="l00867"></a><span class="lineno"> 867</span> <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode|out). If that</span></div><div class="line"><a name="l00868"></a><span class="lineno"> 868</span> <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00869"></a><span class="lineno"> 869</span> <span class="comment"> */</span></div><div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00871"></a><span class="lineno"><a class="line" href="a02068.html#a3da82e8f108d33a7e5de244695d2a28b"> 871</a></span>  <a class="code" href="a02068.html#a3da82e8f108d33a7e5de244695d2a28b">open</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  {</div><div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s, __mode | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>))</div><div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  <span class="comment">// 409. Closing an fstream should clear error state</span></div><div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  this-><a class="code" href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">clear</a>();</div><div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  }</div><div class="line"><a name="l00880"></a><span class="lineno"> 880</span> </div><div class="line"><a name="l00881"></a><span class="lineno"> 881</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00882"></a><span class="lineno"> 882</span> <span class="comment"> /**</span></div><div class="line"><a name="l00883"></a><span class="lineno"> 883</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l00884"></a><span class="lineno"> 884</span> <span class="comment"> * @param __s The name of the file, as a filesystem::path.</span></div><div class="line"><a name="l00885"></a><span class="lineno"> 885</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l00886"></a><span class="lineno"> 886</span> <span class="comment"> *</span></div><div class="line"><a name="l00887"></a><span class="lineno"> 887</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode|out). If that</span></div><div class="line"><a name="l00888"></a><span class="lineno"> 888</span> <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00889"></a><span class="lineno"> 889</span> <span class="comment"> */</span></div><div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path></div><div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  _If_fs_path<_Path, void></div><div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <a class="code" href="a02068.html#a81f26964cd5c6cc8d3e833735f606646">open</a>(<span class="keyword">const</span> _Path& __s, ios_base::openmode __mode = <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  { <a class="code" href="a02068.html#a81f26964cd5c6cc8d3e833735f606646">open</a>(__s.c_str(), __mode); }</div><div class="line"><a name="l00894"></a><span class="lineno"> 894</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00895"></a><span class="lineno"> 895</span> <span class="preprocessor">#endif // C++11</span></div><div class="line"><a name="l00896"></a><span class="lineno"> 896</span> <span class="comment"></span></div><div class="line"><a name="l00897"></a><span class="lineno"> 897</span> <span class="comment"> /**</span></div><div class="line"><a name="l00898"></a><span class="lineno"> 898</span> <span class="comment"> * @brief Close the file.</span></div><div class="line"><a name="l00899"></a><span class="lineno"> 899</span> <span class="comment"> *</span></div><div class="line"><a name="l00900"></a><span class="lineno"> 900</span> <span class="comment"> * Calls @c std::basic_filebuf::close(). If that function</span></div><div class="line"><a name="l00901"></a><span class="lineno"> 901</span> <span class="comment"> * fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l00902"></a><span class="lineno"> 902</span> <span class="comment"> */</span></div><div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00904"></a><span class="lineno"><a class="line" href="a02068.html#a63e51ce67bbd3eee66b04851100a8a52"> 904</a></span>  <a class="code" href="a02068.html#a63e51ce67bbd3eee66b04851100a8a52">close</a>()</div><div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  {</div><div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#a5e13a128abb0a5dd8ef1e3d10597031f">close</a>())</div><div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  }</div><div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  };</div><div class="line"><a name="l00910"></a><span class="lineno"> 910</span> </div><div class="line"><a name="l00911"></a><span class="lineno"> 911</span> </div><div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <span class="comment">// [27.8.1.11] Template class basic_fstream</span><span class="comment"></span></div><div class="line"><a name="l00913"></a><span class="lineno"> 913</span> <span class="comment"> /**</span></div><div class="line"><a name="l00914"></a><span class="lineno"> 914</span> <span class="comment"> * @brief Controlling input and output for files.</span></div><div class="line"><a name="l00915"></a><span class="lineno"> 915</span> <span class="comment"> * @ingroup io</span></div><div class="line"><a name="l00916"></a><span class="lineno"> 916</span> <span class="comment"> *</span></div><div class="line"><a name="l00917"></a><span class="lineno"> 917</span> <span class="comment"> * @tparam _CharT Type of character stream.</span></div><div class="line"><a name="l00918"></a><span class="lineno"> 918</span> <span class="comment"> * @tparam _Traits Traits for character type, defaults to</span></div><div class="line"><a name="l00919"></a><span class="lineno"> 919</span> <span class="comment"> * char_traits<_CharT>.</span></div><div class="line"><a name="l00920"></a><span class="lineno"> 920</span> <span class="comment"> *</span></div><div class="line"><a name="l00921"></a><span class="lineno"> 921</span> <span class="comment"> * This class supports reading from and writing to named files, using</span></div><div class="line"><a name="l00922"></a><span class="lineno"> 922</span> <span class="comment"> * the inherited functions from std::basic_iostream. To control the</span></div><div class="line"><a name="l00923"></a><span class="lineno"> 923</span> <span class="comment"> * associated sequence, an instance of std::basic_filebuf is used, which</span></div><div class="line"><a name="l00924"></a><span class="lineno"> 924</span> <span class="comment"> * this page refers to as @c sb.</span></div><div class="line"><a name="l00925"></a><span class="lineno"> 925</span> <span class="comment"> */</span></div><div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits></div><div class="line"><a name="l00927"></a><span class="lineno"><a class="line" href="a02072.html"> 927</a></span>  <span class="keyword">class </span><a class="code" href="a02072.html">basic_fstream</a> : <span class="keyword">public</span> <a class="code" href="a02464.html">basic_iostream</a><_CharT, _Traits></div><div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  {</div><div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="comment">// Types:</span></div><div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <span class="keyword">typedef</span> _CharT char_type;</div><div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="keyword">typedef</span> _Traits traits_type;</div><div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type int_type;</div><div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type pos_type;</div><div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type off_type;</div><div class="line"><a name="l00936"></a><span class="lineno"> 936</span> </div><div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <span class="comment">// Non-standard types:</span></div><div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  <span class="keyword">typedef</span> <a class="code" href="a02060.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a02060.html">__filebuf_type</a>;</div><div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  <span class="keyword">typedef</span> <a class="code" href="a02448.html">basic_ios<char_type, traits_type></a> <a class="code" href="a02448.html">__ios_type</a>;</div><div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  <span class="keyword">typedef</span> <a class="code" href="a02464.html">basic_iostream<char_type, traits_type></a> <a class="code" href="a02464.html">__iostream_type</a>;</div><div class="line"><a name="l00941"></a><span class="lineno"> 941</span> </div><div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  <a class="code" href="a02060.html">__filebuf_type</a> _M_filebuf;</div><div class="line"><a name="l00944"></a><span class="lineno"> 944</span> </div><div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <span class="comment">// Constructors/destructor:</span><span class="comment"></span></div><div class="line"><a name="l00947"></a><span class="lineno"> 947</span> <span class="comment"> /**</span></div><div class="line"><a name="l00948"></a><span class="lineno"> 948</span> <span class="comment"> * @brief Default constructor.</span></div><div class="line"><a name="l00949"></a><span class="lineno"> 949</span> <span class="comment"> *</span></div><div class="line"><a name="l00950"></a><span class="lineno"> 950</span> <span class="comment"> * Initializes @c sb using its default constructor, and passes</span></div><div class="line"><a name="l00951"></a><span class="lineno"> 951</span> <span class="comment"> * @c &sb to the base class initializer. Does not open any files</span></div><div class="line"><a name="l00952"></a><span class="lineno"> 952</span> <span class="comment"> * (you haven't given it a filename to open).</span></div><div class="line"><a name="l00953"></a><span class="lineno"> 953</span> <span class="comment"> */</span></div><div class="line"><a name="l00954"></a><span class="lineno"><a class="line" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e"> 954</a></span>  <a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>()</div><div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  : <a class="code" href="a02464.html">__iostream_type</a>(), _M_filebuf()</div><div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  { this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf); }</div><div class="line"><a name="l00957"></a><span class="lineno"> 957</span> <span class="comment"></span></div><div class="line"><a name="l00958"></a><span class="lineno"> 958</span> <span class="comment"> /**</span></div><div class="line"><a name="l00959"></a><span class="lineno"> 959</span> <span class="comment"> * @brief Create an input/output file stream.</span></div><div class="line"><a name="l00960"></a><span class="lineno"> 960</span> <span class="comment"> * @param __s Null terminated string specifying the filename.</span></div><div class="line"><a name="l00961"></a><span class="lineno"> 961</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00962"></a><span class="lineno"> 962</span> <span class="comment"> */</span></div><div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00964"></a><span class="lineno"><a class="line" href="a02072.html#ae15d72ac8176fa8086d0d0a46c9a047c"> 964</a></span>  <a class="code" href="a02072.html#ae15d72ac8176fa8086d0d0a46c9a047c">basic_fstream</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,</div><div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  : <a class="code" href="a02464.html">__iostream_type</a>(0), _M_filebuf()</div><div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  {</div><div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf);</div><div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  this-><a class="code" href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">open</a>(__s, __mode);</div><div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  }</div><div class="line"><a name="l00971"></a><span class="lineno"> 971</span> </div><div class="line"><a name="l00972"></a><span class="lineno"> 972</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00973"></a><span class="lineno"> 973</span> <span class="comment"> /**</span></div><div class="line"><a name="l00974"></a><span class="lineno"> 974</span> <span class="comment"> * @brief Create an input/output file stream.</span></div><div class="line"><a name="l00975"></a><span class="lineno"> 975</span> <span class="comment"> * @param __s Null terminated string specifying the filename.</span></div><div class="line"><a name="l00976"></a><span class="lineno"> 976</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00977"></a><span class="lineno"> 977</span> <span class="comment"> */</span></div><div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00979"></a><span class="lineno"><a class="line" href="a02072.html#a403175b364bfae6f18b01aea8bd309e2"> 979</a></span>  <a class="code" href="a02072.html#a403175b364bfae6f18b01aea8bd309e2">basic_fstream</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s,</div><div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  : <a class="code" href="a02464.html">__iostream_type</a>(0), _M_filebuf()</div><div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  {</div><div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  this-><a class="code" href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">init</a>(&_M_filebuf);</div><div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  this-><a class="code" href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">open</a>(__s, __mode);</div><div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  }</div><div class="line"><a name="l00986"></a><span class="lineno"> 986</span> </div><div class="line"><a name="l00987"></a><span class="lineno"> 987</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l00988"></a><span class="lineno"> 988</span> <span class="comment"> /**</span></div><div class="line"><a name="l00989"></a><span class="lineno"> 989</span> <span class="comment"> * @param Create an input/output file stream.</span></div><div class="line"><a name="l00990"></a><span class="lineno"> 990</span> <span class="comment"> * @param __s filesystem::path specifying the filename.</span></div><div class="line"><a name="l00991"></a><span class="lineno"> 991</span> <span class="comment"> * @param __mode Open file in specified mode (see std::ios_base).</span></div><div class="line"><a name="l00992"></a><span class="lineno"> 992</span> <span class="comment"> */</span></div><div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path, <span class="keyword">typename</span> _Require = _If_fs_path<_Path>></div><div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  <a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>(<span class="keyword">const</span> _Path& __s,</div><div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  : <a class="code" href="a02072.html">basic_fstream</a>(__s.c_str(), __mode)</div><div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  { }</div><div class="line"><a name="l00998"></a><span class="lineno"> 998</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l00999"></a><span class="lineno"> 999</span> </div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  <a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>(<span class="keyword">const</span> <a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span> </div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  <a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>(<a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>&& __rhs)</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  : __iostream_type(<a class="code" href="a01538.html">std</a>::move(__rhs)),</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  _M_filebuf(<a class="code" href="a01538.html">std</a>::move(__rhs._M_filebuf))</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  { __iostream_type::set_rdbuf(&_M_filebuf); }</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span> <span class="comment"></span></div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span> <span class="comment"> /**</span></div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span> <span class="comment"> * @brief The destructor does nothing.</span></div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span> <span class="comment"> *</span></div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span> <span class="comment"> * The file is closed by the filebuf object, not the formatting</span></div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span> <span class="comment"> * stream.</span></div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span> <span class="comment"> */</span></div><div class="line"><a name="l01014"></a><span class="lineno"><a class="line" href="a02072.html#a1b850171ae0a0603138763e98253773b"> 1014</a></span>  <a class="code" href="a02072.html#a1b850171ae0a0603138763e98253773b">~basic_fstream</a>()</div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  { }</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span> </div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="comment">// 27.8.3.2 Assign and swap:</span></div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span> </div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <a class="code" href="a02072.html">basic_fstream</a>&</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  operator=(<span class="keyword">const</span> <a class="code" href="a02072.html">basic_fstream</a>&) = <span class="keyword">delete</span>;</div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span> </div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <a class="code" href="a02072.html">basic_fstream</a>&</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  operator=(<a class="code" href="a02072.html">basic_fstream</a>&& __rhs)</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  {</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  __iostream_type::operator=(std::move(__rhs));</div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  _M_filebuf = std::move(__rhs._M_filebuf);</div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  }</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span> </div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  swap(<a class="code" href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">basic_fstream</a>& __rhs)</div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  {</div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  __iostream_type::swap(__rhs);</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  _M_filebuf.swap(__rhs._M_filebuf);</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  }</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span> </div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  <span class="comment">// Members:</span><span class="comment"></span></div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span> <span class="comment"> /**</span></div><div class="line"><a name="l01041"></a><span class="lineno"> 1041</span> <span class="comment"> * @brief Accessing the underlying buffer.</span></div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span> <span class="comment"> * @return The current basic_filebuf buffer.</span></div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span> <span class="comment"> *</span></div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span> <span class="comment"> * This hides both signatures of std::basic_ios::rdbuf().</span></div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span> <span class="comment"> */</span></div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  __filebuf_type*</div><div class="line"><a name="l01047"></a><span class="lineno"><a class="line" href="a02072.html#a7e87dac89bf6608d35890a632336b347"> 1047</a></span>  <a class="code" href="a02072.html#a7e87dac89bf6608d35890a632336b347">rdbuf</a>()<span class="keyword"> const</span></div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> const_cast<__filebuf_type*>(&_M_filebuf); }</div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span> <span class="comment"></span></div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span> <span class="comment"> /**</span></div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span> <span class="comment"> * @brief Wrapper to test for an open file.</span></div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span> <span class="comment"> * @return @c rdbuf()->is_open()</span></div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span> <span class="comment"> */</span></div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l01055"></a><span class="lineno"><a class="line" href="a02072.html#a715c50358129e80ce7a37ee157c141a7"> 1055</a></span>  <a class="code" href="a02072.html#a715c50358129e80ce7a37ee157c141a7">is_open</a>()</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  { <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>(); }</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span> </div><div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <span class="comment">// 365. Lack of const-qualification in clause 27</span></div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <a class="code" href="a02072.html#a715c50358129e80ce7a37ee157c141a7">is_open</a>()<span class="keyword"> const</span></div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">is_open</a>(); }</div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span> <span class="comment"></span></div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span> <span class="comment"> /**</span></div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span> <span class="comment"> *</span></div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode). If that</span></div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span> <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span> <span class="comment"> */</span></div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l01073"></a><span class="lineno"><a class="line" href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4"> 1073</a></span>  <a class="code" href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  {</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s, __mode))</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  <span class="comment">// 409. Closing an fstream should clear error state</span></div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  this-><a class="code" href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">clear</a>();</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  }</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span> </div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span> <span class="comment"> /**</span></div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span> <span class="comment"> * @param __s The name of the file.</span></div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span> <span class="comment"> *</span></div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode). If that</span></div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span> <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span> <span class="comment"> */</span></div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l01094"></a><span class="lineno"><a class="line" href="a02072.html#a4e3a98b2a30cf6f0e3eaff8eeb9eee47"> 1094</a></span>  <a class="code" href="a02072.html#a4e3a98b2a30cf6f0e3eaff8eeb9eee47">open</a>(<span class="keyword">const</span> <a class="code" href="a04768.html">std::string</a>& __s,</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  {</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#ad72dc61561f4420b36f9e626b4426433">open</a>(__s, __mode))</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  <span class="comment">// 409. Closing an fstream should clear error state</span></div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  this-><a class="code" href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">clear</a>();</div><div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  }</div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span> </div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span> <span class="preprocessor">#if __cplusplus >= 201703L</span></div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span> <span class="comment"> /**</span></div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span> <span class="comment"> * @brief Opens an external file.</span></div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span> <span class="comment"> * @param __s The name of the file, as a filesystem::path.</span></div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span> <span class="comment"> * @param __mode The open mode flags.</span></div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span> <span class="comment"> *</span></div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span> <span class="comment"> * Calls @c std::basic_filebuf::open(__s,__mode). If that</span></div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span> <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span> <span class="comment"> */</span></div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Path></div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  _If_fs_path<_Path, void></div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <a class="code" href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">open</a>(<span class="keyword">const</span> _Path& __s,</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  ios_base::openmode __mode = <a class="code" href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> | <a class="code" href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>)</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  { <a class="code" href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">open</a>(__s.c_str(), __mode); }</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span> <span class="preprocessor">#endif // C++17</span></div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span> <span class="preprocessor">#endif // C++11</span></div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span> <span class="comment"></span></div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span> <span class="comment"> /**</span></div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span> <span class="comment"> * @brief Close the file.</span></div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span> <span class="comment"> *</span></div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span> <span class="comment"> * Calls @c std::basic_filebuf::close(). If that function</span></div><div class="line"><a name="l01126"></a><span class="lineno"> 1126</span> <span class="comment"> * fails, @c failbit is set in the stream's error state.</span></div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span> <span class="comment"> */</span></div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l01129"></a><span class="lineno"><a class="line" href="a02072.html#adf2ca5f243067d406a96f91763173839"> 1129</a></span>  <a class="code" href="a02072.html#adf2ca5f243067d406a96f91763173839">close</a>()</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  {</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a02060.html#a5e13a128abb0a5dd8ef1e3d10597031f">close</a>())</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  this-><a class="code" href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">setstate</a>(<a class="code" href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">ios_base::failbit</a>);</div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  }</div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  };</div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span> </div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span> <span class="comment"> /// Swap specialization for filebufs.</span></div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span> <span class="comment"></span> <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits></div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l01140"></a><span class="lineno"><a class="line" href="a01538.html#ab99dc85cd3551cb410655b02a56e5c15"> 1140</a></span>  swap(<a class="code" href="a02060.html">basic_filebuf<_CharT, _Traits></a>& __x,</div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  <a class="code" href="a02060.html">basic_filebuf<_CharT, _Traits></a>& __y)</div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  { __x.swap(__y); }</div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span> <span class="comment"></span></div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span> <span class="comment"> /// Swap specialization for ifstreams.</span></div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span> <span class="comment"></span> <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits></div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l01147"></a><span class="lineno"><a class="line" href="a01538.html#acfe891185fde2307f6e8909338c7b862"> 1147</a></span>  swap(<a class="code" href="a02064.html">basic_ifstream<_CharT, _Traits></a>& __x,</div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  <a class="code" href="a02064.html">basic_ifstream<_CharT, _Traits></a>& __y)</div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  { __x.swap(__y); }</div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span> <span class="comment"></span></div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span> <span class="comment"> /// Swap specialization for ofstreams.</span></div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span> <span class="comment"></span> <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits></div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l01154"></a><span class="lineno"><a class="line" href="a01538.html#a4965e732ce5d02e4304dd82bc86e365a"> 1154</a></span>  swap(<a class="code" href="a02068.html">basic_ofstream<_CharT, _Traits></a>& __x,</div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  <a class="code" href="a02068.html">basic_ofstream<_CharT, _Traits></a>& __y)</div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  { __x.swap(__y); }</div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span> <span class="comment"></span></div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span> <span class="comment"> /// Swap specialization for fstreams.</span></div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span> <span class="comment"></span> <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits></div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l01161"></a><span class="lineno"><a class="line" href="a01538.html#a7ccd229f5faee26395b8ee1715576cf0"> 1161</a></span>  swap(<a class="code" href="a02072.html">basic_fstream<_CharT, _Traits></a>& __x,</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <a class="code" href="a02072.html">basic_fstream<_CharT, _Traits></a>& __y)</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  { __x.swap(__y); }</div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span> </div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span> </div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span> <span class="preprocessor">#include <<a class="code" href="a00353.html">bits/fstream.tcc</a>></span></div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span> </div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span> <span class="preprocessor">#endif </span><span class="comment">/* _GLIBCXX_FSTREAM */</span><span class="preprocessor"></span></div><div class="ttc" id="a05796_html_a652e2323949eea3d906e1c81bd8ce8f7"><div class="ttname"><a href="a05796.html#a652e2323949eea3d906e1c81bd8ce8f7">std::ios_base::in</a></div><div class="ttdeci">static const openmode in</div><div class="ttdoc">Open for input. Default for ifstream and fstream.</div><div class="ttdef"><b>Definition:</b> <a href="a00383_source.html#l00443">ios_base.h:443</a></div></div>
<div class="ttc" id="a02064_html_a642496a04b7adb81e614d2b3903734ff"><div class="ttname"><a href="a02064.html#a642496a04b7adb81e614d2b3903734ff">std::basic_ifstream::open</a></div><div class="ttdeci">void open(const char *__s, ios_base::openmode __mode=ios_base::in)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00625">fstream:625</a></div></div>
<div class="ttc" id="a02448_html_a07a10e07246ef2a68c0c3f08d94c7607"><div class="ttname"><a href="a02448.html#a07a10e07246ef2a68c0c3f08d94c7607">std::basic_ios::clear</a></div><div class="ttdeci">void clear(iostate __state=goodbit)</div><div class="ttdoc">[Re]sets the error state.</div><div class="ttdef"><b>Definition:</b> <a href="a00287_source.html#l00041">basic_ios.tcc:41</a></div></div>
<div class="ttc" id="a02060_html_a981a6d9fa6672d57f94dc2578f3d4b07"><div class="ttname"><a href="a02060.html#a981a6d9fa6672d57f94dc2578f3d4b07">std::basic_filebuf::_M_buf</a></div><div class="ttdeci">char_type * _M_buf</div><div class="ttdoc">Pointer to the beginning of internal buffer.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00136">fstream:136</a></div></div>
<div class="ttc" id="a02452_html_a38c9b562c20b30bf9d21cf0e4dc90356"><div class="ttname"><a href="a02452.html#a38c9b562c20b30bf9d21cf0e4dc90356">std::basic_streambuf::setg</a></div><div class="ttdeci">void setg(char_type *__gbeg, char_type *__gnext, char_type *__gend)</div><div class="ttdoc">Setting the three read area pointers.</div><div class="ttdef"><b>Definition:</b> <a href="a00149_source.html#l00516">streambuf:516</a></div></div>
<div class="ttc" id="a02068_html_a3da82e8f108d33a7e5de244695d2a28b"><div class="ttname"><a href="a02068.html#a3da82e8f108d33a7e5de244695d2a28b">std::basic_ofstream::open</a></div><div class="ttdeci">void open(const std::string &__s, ios_base::openmode __mode=ios_base::out)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00871">fstream:871</a></div></div>
<div class="ttc" id="a02060_html_a0763759a2b15f0d18f869978aded8f84"><div class="ttname"><a href="a02060.html#a0763759a2b15f0d18f869978aded8f84">std::basic_filebuf::_M_pback</a></div><div class="ttdeci">char_type _M_pback</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00164">fstream:164</a></div></div>
<div class="ttc" id="a02068_html_aef0ea13a6d1c1bc6ee4f1ebc71e18414"><div class="ttname"><a href="a02068.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414">std::basic_ofstream::is_open</a></div><div class="ttdeci">bool is_open()</div><div class="ttdoc">Wrapper to test for an open file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00833">fstream:833</a></div></div>
<div class="ttc" id="a00239_html"><div class="ttname"><a href="a00239.html">cstdio</a></div></div>
<div class="ttc" id="a05796_html_aec074f3d22b7cf5e70d1e91cb9f9d5c4"><div class="ttname"><a href="a05796.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4">std::ios_base::failbit</a></div><div class="ttdeci">static const iostate failbit</div><div class="ttdoc">Indicates that an input operation failed to read the expected characters, or that an output operation...</div><div class="ttdef"><b>Definition:</b> <a href="a00383_source.html#l00410">ios_base.h:410</a></div></div>
<div class="ttc" id="a02064_html_a7f104c73e5bd5a76405a0edc299da3e2"><div class="ttname"><a href="a02064.html#a7f104c73e5bd5a76405a0edc299da3e2">std::basic_ifstream::rdbuf</a></div><div class="ttdeci">__filebuf_type * rdbuf() const</div><div class="ttdoc">Accessing the underlying buffer.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00599">fstream:599</a></div></div>
<div class="ttc" id="a02072_html_a4e3a98b2a30cf6f0e3eaff8eeb9eee47"><div class="ttname"><a href="a02072.html#a4e3a98b2a30cf6f0e3eaff8eeb9eee47">std::basic_fstream::open</a></div><div class="ttdeci">void open(const std::string &__s, ios_base::openmode __mode=ios_base::in|ios_base::out)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01094">fstream:1094</a></div></div>
<div class="ttc" id="a05796_html"><div class="ttname"><a href="a05796.html">std::ios_base</a></div><div class="ttdoc">The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...</div><div class="ttdef"><b>Definition:</b> <a href="a00383_source.html#l00228">ios_base.h:228</a></div></div>
<div class="ttc" id="a02060_html_a226a8efc1add60c0fc04ce2714a56b4c"><div class="ttname"><a href="a02060.html#a226a8efc1add60c0fc04ce2714a56b4c">std::basic_filebuf::~basic_filebuf</a></div><div class="ttdeci">virtual ~basic_filebuf()</div><div class="ttdoc">The destructor closes the file first.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00246">fstream:246</a></div></div>
<div class="ttc" id="a02448_html"><div class="ttname"><a href="a02448.html">std::basic_ios</a></div><div class="ttdoc">Template class basic_ios, virtual base class for all stream classes.</div><div class="ttdef"><b>Definition:</b> <a href="a00083_source.html#l00077">iosfwd:77</a></div></div>
<div class="ttc" id="a02060_html_a9e78a1d5dec2c7eea816ada4e43d7576"><div class="ttname"><a href="a02060.html#a9e78a1d5dec2c7eea816ada4e43d7576">std::basic_filebuf::xsputn</a></div><div class="ttdeci">virtual streamsize xsputn(const char_type *__s, streamsize __n)</div><div class="ttdoc">Multiple character insertion.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00721">fstream.tcc:721</a></div></div>
<div class="ttc" id="a02064_html_ad533b4e5d658fe6563d34b9ef36a9d7a"><div class="ttname"><a href="a02064.html#ad533b4e5d658fe6563d34b9ef36a9d7a">std::basic_ifstream::basic_ifstream</a></div><div class="ttdeci">basic_ifstream(const std::string &__s, ios_base::openmode __mode=ios_base::in)</div><div class="ttdoc">Create an input file stream.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00529">fstream:529</a></div></div>
<div class="ttc" id="a04768_html"><div class="ttname"><a href="a04768.html">std::basic_string< char ></a></div></div>
<div class="ttc" id="a02448_html_a2da7d3305cba0695b1d1bec916ae64b0"><div class="ttname"><a href="a02448.html#a2da7d3305cba0695b1d1bec916ae64b0">std::basic_ios::setstate</a></div><div class="ttdeci">void setstate(iostate __state)</div><div class="ttdoc">Sets additional flags in the error state.</div><div class="ttdef"><b>Definition:</b> <a href="a00284_source.html#l00157">basic_ios.h:157</a></div></div>
<div class="ttc" id="a02060_html_a0e8e4218ba9766e34b74e69b17fb28b3"><div class="ttname"><a href="a02060.html#a0e8e4218ba9766e34b74e69b17fb28b3">std::basic_filebuf::showmanyc</a></div><div class="ttdeci">virtual streamsize showmanyc()</div><div class="ttdoc">Investigating the data available.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00263">fstream.tcc:263</a></div></div>
<div class="ttc" id="a02068_html"><div class="ttname"><a href="a02068.html">std::basic_ofstream</a></div><div class="ttdoc">Controlling output for files.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00701">fstream:701</a></div></div>
<div class="ttc" id="a02072_html_a7e87dac89bf6608d35890a632336b347"><div class="ttname"><a href="a02072.html#a7e87dac89bf6608d35890a632336b347">std::basic_fstream::rdbuf</a></div><div class="ttdeci">__filebuf_type * rdbuf() const</div><div class="ttdoc">Accessing the underlying buffer.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01047">fstream:1047</a></div></div>
<div class="ttc" id="a02072_html_a403175b364bfae6f18b01aea8bd309e2"><div class="ttname"><a href="a02072.html#a403175b364bfae6f18b01aea8bd309e2">std::basic_fstream::basic_fstream</a></div><div class="ttdeci">basic_fstream(const std::string &__s, ios_base::openmode __mode=ios_base::in|ios_base::out)</div><div class="ttdoc">Create an input/output file stream.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00979">fstream:979</a></div></div>
<div class="ttc" id="a02456_html"><div class="ttname"><a href="a02456.html">std::basic_istream</a></div><div class="ttdoc">Template class basic_istream.</div><div class="ttdef"><b>Definition:</b> <a href="a00083_source.html#l00083">iosfwd:83</a></div></div>
<div class="ttc" id="a02064_html_adca6a6b93f9f3ae1c9393213caa37a9a"><div class="ttname"><a href="a02064.html#adca6a6b93f9f3ae1c9393213caa37a9a">std::basic_ifstream::close</a></div><div class="ttdeci">void close()</div><div class="ttdoc">Close the file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00678">fstream:678</a></div></div>
<div class="ttc" id="a00650_html"><div class="ttname"><a href="a00650.html">basic_file.h</a></div></div>
<div class="ttc" id="a03576_html"><div class="ttname"><a href="a03576.html">std::is_default_constructible</a></div><div class="ttdoc">is_default_constructible</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00878">type_traits:878</a></div></div>
<div class="ttc" id="a02060_html_a14cdd23152cee458aaa655cf9508f9a6"><div class="ttname"><a href="a02060.html#a14cdd23152cee458aaa655cf9508f9a6">std::basic_filebuf::_M_mode</a></div><div class="ttdeci">ios_base::openmode _M_mode</div><div class="ttdoc">Place to stash in || out || in | out settings for current filebuf.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00121">fstream:121</a></div></div>
<div class="ttc" id="a02064_html"><div class="ttname"><a href="a02064.html">std::basic_ifstream</a></div><div class="ttdoc">Controlling input for files.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00476">fstream:476</a></div></div>
<div class="ttc" id="a02464_html"><div class="ttname"><a href="a02464.html">std::basic_iostream</a></div><div class="ttdoc">Template class basic_iostream.</div><div class="ttdef"><b>Definition:</b> <a href="a00083_source.html#l00089">iosfwd:89</a></div></div>
<div class="ttc" id="a02060_html_a293a2014b3f6801df3764e2c502e6e25"><div class="ttname"><a href="a02060.html#a293a2014b3f6801df3764e2c502e6e25">std::basic_filebuf::_M_pback_cur_save</a></div><div class="ttdeci">char_type * _M_pback_cur_save</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00165">fstream:165</a></div></div>
<div class="ttc" id="a02072_html_aed77d792895951c0c0ca8d6b689a6f3e"><div class="ttname"><a href="a02072.html#aed77d792895951c0c0ca8d6b689a6f3e">std::basic_fstream::basic_fstream</a></div><div class="ttdeci">basic_fstream()</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00954">fstream:954</a></div></div>
<div class="ttc" id="a02452_html_a344bded2a1c24ffcea69a918e7dc6c6f"><div class="ttname"><a href="a02452.html#a344bded2a1c24ffcea69a918e7dc6c6f">std::basic_streambuf::gptr</a></div><div class="ttdeci">char_type * gptr() const</div><div class="ttdoc">Access to the get area.</div><div class="ttdef"><b>Definition:</b> <a href="a00149_source.html#l00492">streambuf:492</a></div></div>
<div class="ttc" id="a02064_html_a0332ea0815cd0f2681780ed3cb482229"><div class="ttname"><a href="a02064.html#a0332ea0815cd0f2681780ed3cb482229">std::basic_ifstream::basic_ifstream</a></div><div class="ttdeci">basic_ifstream()</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00502">fstream:502</a></div></div>
<div class="ttc" id="a02452_html_a38ad1721a50a96c7d37d51a3f858a0cf"><div class="ttname"><a href="a02452.html#a38ad1721a50a96c7d37d51a3f858a0cf">std::basic_streambuf::char_type</a></div><div class="ttdeci">_CharT char_type</div><div class="ttdef"><b>Definition:</b> <a href="a00149_source.html#l00131">streambuf:131</a></div></div>
<div class="ttc" id="a02060_html_a65f15e25bc11ffc20ca24e1c437ee5c0"><div class="ttname"><a href="a02060.html#a65f15e25bc11ffc20ca24e1c437ee5c0">std::basic_filebuf::_M_ext_buf</a></div><div class="ttdeci">char * _M_ext_buf</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00178">fstream:178</a></div></div>
<div class="ttc" id="a02060_html_a59de9f582ce410ea2c7583eaf4228e2f"><div class="ttname"><a href="a02060.html#a59de9f582ce410ea2c7583eaf4228e2f">std::basic_filebuf::_M_buf_size</a></div><div class="ttdeci">size_t _M_buf_size</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00143">fstream:143</a></div></div>
<div class="ttc" id="a02064_html_ab7c7c2bf6e27152bb0460c83c32ab431"><div class="ttname"><a href="a02064.html#ab7c7c2bf6e27152bb0460c83c32ab431">std::basic_ifstream::open</a></div><div class="ttdeci">void open(const std::string &__s, ios_base::openmode __mode=ios_base::in)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00645">fstream:645</a></div></div>
<div class="ttc" id="a02072_html_ae15d72ac8176fa8086d0d0a46c9a047c"><div class="ttname"><a href="a02072.html#ae15d72ac8176fa8086d0d0a46c9a047c">std::basic_fstream::basic_fstream</a></div><div class="ttdeci">basic_fstream(const char *__s, ios_base::openmode __mode=ios_base::in|ios_base::out)</div><div class="ttdoc">Create an input/output file stream.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00964">fstream:964</a></div></div>
<div class="ttc" id="a02072_html_a3a4c04e09a683bc30e9c5c19bdbbcda4"><div class="ttname"><a href="a02072.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">std::basic_fstream::open</a></div><div class="ttdeci">void open(const char *__s, ios_base::openmode __mode=ios_base::in|ios_base::out)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01073">fstream:1073</a></div></div>
<div class="ttc" id="a02060_html_a284d196740028e4047586fe923e7a595"><div class="ttname"><a href="a02060.html#a284d196740028e4047586fe923e7a595">std::basic_filebuf::_M_ext_buf_size</a></div><div class="ttdeci">streamsize _M_ext_buf_size</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00183">fstream:183</a></div></div>
<div class="ttc" id="a02064_html_a83516a8e9d1db5ae7d2cf392b23dd840"><div class="ttname"><a href="a02064.html#a83516a8e9d1db5ae7d2cf392b23dd840">std::basic_ifstream::basic_ifstream</a></div><div class="ttdeci">basic_ifstream(const char *__s, ios_base::openmode __mode=ios_base::in)</div><div class="ttdoc">Create an input file stream.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00513">fstream:513</a></div></div>
<div class="ttc" id="a05796_html_abc6732e5a0d9dc40b79e2fe6e32e7b09"><div class="ttname"><a href="a05796.html#abc6732e5a0d9dc40b79e2fe6e32e7b09">std::ios_base::app</a></div><div class="ttdeci">static const openmode app</div><div class="ttdoc">Seek to end before each write.</div><div class="ttdef"><b>Definition:</b> <a href="a00383_source.html#l00432">ios_base.h:432</a></div></div>
<div class="ttc" id="a02060_html_ad72dc61561f4420b36f9e626b4426433"><div class="ttname"><a href="a02060.html#ad72dc61561f4420b36f9e626b4426433">std::basic_filebuf::open</a></div><div class="ttdeci">__filebuf_type * open(const char *__s, ios_base::openmode __mode)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00179">fstream.tcc:179</a></div></div>
<div class="ttc" id="a02068_html_aa8b35d6ebca2ad10560c37fdeb6f959f"><div class="ttname"><a href="a02068.html#aa8b35d6ebca2ad10560c37fdeb6f959f">std::basic_ofstream::basic_ofstream</a></div><div class="ttdeci">basic_ofstream(const std::string &__s, ios_base::openmode __mode=ios_base::out)</div><div class="ttdoc">Create an output file stream.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00755">fstream:755</a></div></div>
<div class="ttc" id="a02060_html_a4fb6d662a8351a9c790be9fbe78be8b4"><div class="ttname"><a href="a02060.html#a4fb6d662a8351a9c790be9fbe78be8b4">std::basic_filebuf::xsgetn</a></div><div class="ttdeci">virtual streamsize xsgetn(char_type *__s, streamsize __n)</div><div class="ttdoc">Multiple character extraction.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00635">fstream.tcc:635</a></div></div>
<div class="ttc" id="a02072_html_a1b850171ae0a0603138763e98253773b"><div class="ttname"><a href="a02072.html#a1b850171ae0a0603138763e98253773b">std::basic_fstream::~basic_fstream</a></div><div class="ttdeci">~basic_fstream()</div><div class="ttdoc">The destructor does nothing.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01014">fstream:1014</a></div></div>
<div class="ttc" id="a02060_html_af4a3bae8038d32dffd03676c93feccbc"><div class="ttname"><a href="a02060.html#af4a3bae8038d32dffd03676c93feccbc">std::basic_filebuf::_M_ext_next</a></div><div class="ttdeci">const char * _M_ext_next</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00190">fstream:190</a></div></div>
<div class="ttc" id="a02060_html_af42cd30ec66c6eb0df56026098b6e04f"><div class="ttname"><a href="a02060.html#af42cd30ec66c6eb0df56026098b6e04f">std::basic_filebuf::sync</a></div><div class="ttdeci">virtual int sync()</div><div class="ttdoc">Synchronizes the buffer arrays with the controlled sequences.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00978">fstream.tcc:978</a></div></div>
<div class="ttc" id="a02068_html_ab140145d0cd1f4754cd4812a31760f58"><div class="ttname"><a href="a02068.html#ab140145d0cd1f4754cd4812a31760f58">std::basic_ofstream::~basic_ofstream</a></div><div class="ttdeci">~basic_ofstream()</div><div class="ttdoc">The destructor does nothing.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00792">fstream:792</a></div></div>
<div class="ttc" id="a01538_html"><div class="ttname"><a href="a01538.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div>
<div class="ttc" id="a02060_html_a5e13a128abb0a5dd8ef1e3d10597031f"><div class="ttname"><a href="a02060.html#a5e13a128abb0a5dd8ef1e3d10597031f">std::basic_filebuf::close</a></div><div class="ttdeci">__filebuf_type * close()</div><div class="ttdoc">Closes the currently associated file.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00213">fstream.tcc:213</a></div></div>
<div class="ttc" id="a00305_html"><div class="ttname"><a href="a00305.html">codecvt.h</a></div></div>
<div class="ttc" id="a02068_html_a63e51ce67bbd3eee66b04851100a8a52"><div class="ttname"><a href="a02068.html#a63e51ce67bbd3eee66b04851100a8a52">std::basic_ofstream::close</a></div><div class="ttdeci">void close()</div><div class="ttdoc">Close the file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00904">fstream:904</a></div></div>
<div class="ttc" id="a02068_html_a19f5b05d46380f7866b1212413d6c046"><div class="ttname"><a href="a02068.html#a19f5b05d46380f7866b1212413d6c046">std::basic_ofstream::basic_ofstream</a></div><div class="ttdeci">basic_ofstream()</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00727">fstream:727</a></div></div>
<div class="ttc" id="a02060_html_a91365d684bb298cb7ad42e3c73cd0252"><div class="ttname"><a href="a02060.html#a91365d684bb298cb7ad42e3c73cd0252">std::basic_filebuf::seekpos</a></div><div class="ttdeci">virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode=ios_base::in|ios_base::out)</div><div class="ttdoc">Alters the stream positions.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00858">fstream.tcc:858</a></div></div>
<div class="ttc" id="a02452_html_ad02de7bae6f055a7b112aeef35a08d9b"><div class="ttname"><a href="a02452.html#ad02de7bae6f055a7b112aeef35a08d9b">std::basic_streambuf::egptr</a></div><div class="ttdeci">char_type * egptr() const</div><div class="ttdoc">Access to the get area.</div><div class="ttdef"><b>Definition:</b> <a href="a00149_source.html#l00495">streambuf:495</a></div></div>
<div class="ttc" id="a06172_html"><div class="ttname"><a href="a06172.html">std::fpos</a></div><div class="ttdoc">Class representing stream positions.</div><div class="ttdef"><b>Definition:</b> <a href="a00440_source.html#l00112">postypes.h:112</a></div></div>
<div class="ttc" id="a02068_html_ac507f40924f057de2f2c6ced401e6467"><div class="ttname"><a href="a02068.html#ac507f40924f057de2f2c6ced401e6467">std::basic_ofstream::rdbuf</a></div><div class="ttdeci">__filebuf_type * rdbuf() const</div><div class="ttdoc">Accessing the underlying buffer.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00825">fstream:825</a></div></div>
<div class="ttc" id="a02060_html_aa144642d688ad4c36807ce149e632995"><div class="ttname"><a href="a02060.html#aa144642d688ad4c36807ce149e632995">std::basic_filebuf::_M_pback_init</a></div><div class="ttdeci">bool _M_pback_init</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00167">fstream:167</a></div></div>
<div class="ttc" id="a00152_html"><div class="ttname"><a href="a00152.html">string</a></div></div>
<div class="ttc" id="a02060_html_a051ec9d0aa68d3bbf3a2b8cb2e41c93b"><div class="ttname"><a href="a02060.html#a051ec9d0aa68d3bbf3a2b8cb2e41c93b">std::basic_filebuf::underflow</a></div><div class="ttdeci">virtual int_type underflow()</div><div class="ttdoc">Fetches more data from the controlled sequence.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00289">fstream.tcc:289</a></div></div>
<div class="ttc" id="a04768_html_a1c644c6d7fe3a686d752a9aecb99da0c"><div class="ttname"><a href="a04768.html#a1c644c6d7fe3a686d752a9aecb99da0c">std::basic_string::c_str</a></div><div class="ttdeci">const _CharT * c_str() const noexcept</div><div class="ttdoc">Return const pointer to null-terminated contents.</div><div class="ttdef"><b>Definition:</b> <a href="a00290_source.html#l05128">basic_string.h:5128</a></div></div>
<div class="ttc" id="a02072_html_adf2ca5f243067d406a96f91763173839"><div class="ttname"><a href="a02072.html#adf2ca5f243067d406a96f91763173839">std::basic_fstream::close</a></div><div class="ttdeci">void close()</div><div class="ttdoc">Close the file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01129">fstream:1129</a></div></div>
<div class="ttc" id="a02452_html_ab0f1b49870f87d288a737cd9f8f9ec00"><div class="ttname"><a href="a02452.html#ab0f1b49870f87d288a737cd9f8f9ec00">std::basic_streambuf::setp</a></div><div class="ttdeci">void setp(char_type *__pbeg, char_type *__pend)</div><div class="ttdoc">Setting the three write area pointers.</div><div class="ttdef"><b>Definition:</b> <a href="a00149_source.html#l00562">streambuf:562</a></div></div>
<div class="ttc" id="a02060_html_add2d16a8965c490cd9b4cc95b958e09f"><div class="ttname"><a href="a02060.html#add2d16a8965c490cd9b4cc95b958e09f">std::basic_filebuf::basic_filebuf</a></div><div class="ttdeci">basic_filebuf()</div><div class="ttdoc">Does not open any files.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00080">fstream.tcc:80</a></div></div>
<div class="ttc" id="a02452_html_aa15c80d916ef8065138eb6bd5b3ae1ef"><div class="ttname"><a href="a02452.html#aa15c80d916ef8065138eb6bd5b3ae1ef">std::basic_streambuf::eback</a></div><div class="ttdeci">char_type * eback() const</div><div class="ttdoc">Access to the get area.</div><div class="ttdef"><b>Definition:</b> <a href="a00149_source.html#l00489">streambuf:489</a></div></div>
<div class="ttc" id="a01538_html_a7ccd229f5faee26395b8ee1715576cf0"><div class="ttname"><a href="a01538.html#a7ccd229f5faee26395b8ee1715576cf0">std::swap</a></div><div class="ttdeci">void swap(basic_fstream< _CharT, _Traits > &__x, basic_fstream< _CharT, _Traits > &__y)</div><div class="ttdoc">Swap specialization for fstreams.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01161">fstream:1161</a></div></div>
<div class="ttc" id="a02060_html_af3d033b08f1641d4594fb5d21eb2db89"><div class="ttname"><a href="a02060.html#af3d033b08f1641d4594fb5d21eb2db89">std::basic_filebuf::_M_set_buffer</a></div><div class="ttdeci">void _M_set_buffer(streamsize __off)</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00443">fstream:443</a></div></div>
<div class="ttc" id="a00089_html"><div class="ttname"><a href="a00089.html">istream</a></div></div>
<div class="ttc" id="a05136_html"><div class="ttname"><a href="a05136.html">std::codecvt</a></div><div class="ttdoc">Primary class template codecvt.NB: Generic, mostly useless implementation.</div><div class="ttdef"><b>Definition:</b> <a href="a00305_source.html#l00274">codecvt.h:274</a></div></div>
<div class="ttc" id="a02064_html_a1bb90895f6ee2886b8e2dd9e033d31ad"><div class="ttname"><a href="a02064.html#a1bb90895f6ee2886b8e2dd9e033d31ad">std::basic_ifstream::~basic_ifstream</a></div><div class="ttdeci">~basic_ifstream()</div><div class="ttdoc">The destructor does nothing.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00566">fstream:566</a></div></div>
<div class="ttc" id="a02452_html"><div class="ttname"><a href="a02452.html">std::basic_streambuf</a></div><div class="ttdoc">The actual work of input and output (interface).</div><div class="ttdef"><b>Definition:</b> <a href="a00083_source.html#l00080">iosfwd:80</a></div></div>
<div class="ttc" id="a02060_html_a0152beebcac8c9542b6b0efe3de5bbfb"><div class="ttname"><a href="a02060.html#a0152beebcac8c9542b6b0efe3de5bbfb">std::basic_filebuf::seekoff</a></div><div class="ttdeci">virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __mode=ios_base::in|ios_base::out)</div><div class="ttdoc">Alters the stream positions.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00798">fstream.tcc:798</a></div></div>
<div class="ttc" id="a02060_html_a541062313b01b7bb74af2582f88a365f"><div class="ttname"><a href="a02060.html#a541062313b01b7bb74af2582f88a365f">std::basic_filebuf::open</a></div><div class="ttdeci">__filebuf_type * open(const std::string &__s, ios_base::openmode __mode)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00315">fstream:315</a></div></div>
<div class="ttc" id="a02068_html_a498255bc11415cc1297260481e1384e7"><div class="ttname"><a href="a02068.html#a498255bc11415cc1297260481e1384e7">std::basic_ofstream::basic_ofstream</a></div><div class="ttdeci">basic_ofstream(const char *__s, ios_base::openmode __mode=ios_base::out)</div><div class="ttdoc">Create an output file stream.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00738">fstream:738</a></div></div>
<div class="ttc" id="a00353_html"><div class="ttname"><a href="a00353.html">fstream.tcc</a></div></div>
<div class="ttc" id="a02064_html_afcbe0c0931007c7359e16543abe1fe87"><div class="ttname"><a href="a02064.html#afcbe0c0931007c7359e16543abe1fe87">std::basic_ifstream::is_open</a></div><div class="ttdeci">bool is_open()</div><div class="ttdoc">Wrapper to test for an open file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00607">fstream:607</a></div></div>
<div class="ttc" id="a02072_html_a715c50358129e80ce7a37ee157c141a7"><div class="ttname"><a href="a02072.html#a715c50358129e80ce7a37ee157c141a7">std::basic_fstream::is_open</a></div><div class="ttdeci">bool is_open()</div><div class="ttdoc">Wrapper to test for an open file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l01055">fstream:1055</a></div></div>
<div class="ttc" id="a02060_html_acde765e7a5ddaca79683176fe981cec1"><div class="ttname"><a href="a02060.html#acde765e7a5ddaca79683176fe981cec1">std::basic_filebuf::_M_reading</a></div><div class="ttdeci">bool _M_reading</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00155">fstream:155</a></div></div>
<div class="ttc" id="a00116_html"><div class="ttname"><a href="a00116.html">ostream</a></div></div>
<div class="ttc" id="a02060_html_a56ddf5ebdff55e7aaf51077a51c4d42f"><div class="ttname"><a href="a02060.html#a56ddf5ebdff55e7aaf51077a51c4d42f">std::basic_filebuf::is_open</a></div><div class="ttdeci">bool is_open() const</div><div class="ttdoc">Returns true if the external file is open.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00260">fstream:260</a></div></div>
<div class="ttc" id="a02072_html"><div class="ttname"><a href="a02072.html">std::basic_fstream</a></div><div class="ttdoc">Controlling input and output for files.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00927">fstream:927</a></div></div>
<div class="ttc" id="a02060_html"><div class="ttname"><a href="a02060.html">std::basic_filebuf</a></div><div class="ttdoc">The actual work of input and output (for files).</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00080">fstream:80</a></div></div>
<div class="ttc" id="a02068_html_a81f26964cd5c6cc8d3e833735f606646"><div class="ttname"><a href="a02068.html#a81f26964cd5c6cc8d3e833735f606646">std::basic_ofstream::open</a></div><div class="ttdeci">void open(const char *__s, ios_base::openmode __mode=ios_base::out)</div><div class="ttdoc">Opens an external file.</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00851">fstream:851</a></div></div>
<div class="ttc" id="a02448_html_a62a4b454cbedd686b89e48fa9d6160c4"><div class="ttname"><a href="a02448.html#a62a4b454cbedd686b89e48fa9d6160c4">std::basic_ios::init</a></div><div class="ttdeci">void init(basic_streambuf< _CharT, _Traits > *__sb)</div><div class="ttdoc">All setup is performed here.</div><div class="ttdef"><b>Definition:</b> <a href="a00287_source.html#l00126">basic_ios.tcc:126</a></div></div>
<div class="ttc" id="a02460_html"><div class="ttname"><a href="a02460.html">std::basic_ostream</a></div><div class="ttdoc">Template class basic_ostream.</div><div class="ttdef"><b>Definition:</b> <a href="a00083_source.html#l00086">iosfwd:86</a></div></div>
<div class="ttc" id="a03592_html"><div class="ttname"><a href="a03592.html">std::is_copy_constructible</a></div><div class="ttdoc">is_copy_constructible</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00896">type_traits:896</a></div></div>
<div class="ttc" id="a02060_html_a65dce41d776ab7f376607436e7c5455c"><div class="ttname"><a href="a02060.html#a65dce41d776ab7f376607436e7c5455c">std::basic_filebuf::_M_pback_end_save</a></div><div class="ttdeci">char_type * _M_pback_end_save</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00166">fstream:166</a></div></div>
<div class="ttc" id="a02060_html_ac4c7480aea8087a568d10b87a06b4d4e"><div class="ttname"><a href="a02060.html#ac4c7480aea8087a568d10b87a06b4d4e">std::basic_filebuf::_M_create_pback</a></div><div class="ttdeci">void _M_create_pback()</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00199">fstream:199</a></div></div>
<div class="ttc" id="a01538_html_a05eef5582eb5de62b76db4916f7adb84"><div class="ttname"><a href="a01538.html#a05eef5582eb5de62b76db4916f7adb84">std::streamsize</a></div><div class="ttdeci">ptrdiff_t streamsize</div><div class="ttdoc">Integral type for I/O operation counts and buffer sizes.</div><div class="ttdef"><b>Definition:</b> <a href="a00440_source.html#l00098">postypes.h:98</a></div></div>
<div class="ttc" id="a03880_html"><div class="ttname"><a href="a03880.html">std::is_same</a></div><div class="ttdoc">is_same</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l01286">type_traits:1286</a></div></div>
<div class="ttc" id="a02060_html_a7b95d650e7a161b18ca9fcbd3f792253"><div class="ttname"><a href="a02060.html#a7b95d650e7a161b18ca9fcbd3f792253">std::basic_filebuf::_M_destroy_pback</a></div><div class="ttdeci">void _M_destroy_pback()</div><div class="ttdef"><b>Definition:</b> <a href="a00068_source.html#l00216">fstream:216</a></div></div>
<div class="ttc" id="a02060_html_afdc468aedafb80e43f14569d09485e6b"><div class="ttname"><a href="a02060.html#afdc468aedafb80e43f14569d09485e6b">std::basic_filebuf::setbuf</a></div><div class="ttdeci">virtual __streambuf_type * setbuf(char_type *__s, streamsize __n)</div><div class="ttdoc">Manipulates the buffer.</div><div class="ttdef"><b>Definition:</b> <a href="a00353_source.html#l00769">fstream.tcc:769</a></div></div>
<div class="ttc" id="a05796_html_a7187e216e5d16ec820ea1791002f85e0"><div class="ttname"><a href="a05796.html#a7187e216e5d16ec820ea1791002f85e0">std::ios_base::out</a></div><div class="ttdeci">static const openmode out</div><div class="ttdoc">Open for output. Default for ofstream and fstream.</div><div class="ttdef"><b>Definition:</b> <a href="a00383_source.html#l00446">ios_base.h:446</a></div></div>
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