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<a href="a01538.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">// String 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) 1997-2013 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 bits/sstream.tcc</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is an internal header file, included by other library headers.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * Do not attempt to use it directly. @headername{sstream}</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">//</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// ISO C++ 14882: 27.7 String-based streams</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">//</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#ifndef _SSTREAM_TCC</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#define _SSTREAM_TCC 1</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#pragma GCC system_header</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span>std _GLIBCXX_VISIBILITY(default)</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">typename</span> basic_stringbuf<_CharT, _Traits, _Alloc>::int_type</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  basic_stringbuf<_CharT, _Traits, _Alloc>::</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  pbackfail(int_type __c)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  int_type __ret = traits_type::eof();</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (this->eback() < this->gptr())</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="comment">// Try to put back __c into input sequence in one of three ways.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// Order these tests done in is unspecified by the standard.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testeof = traits_type::eq_int_type(__c, __ret);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (!__testeof)</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testeq = traits_type::eq(traits_type::</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  to_char_type(__c),</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  this->gptr()[-1]); </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testout = this->_M_mode & <a class="code" href="a00791.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (__testeq || __testout)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  this->gbump(-1);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (!__testeq)</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  *this->gptr() = traits_type::to_char_type(__c);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  __ret = __c;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  this->gbump(-1);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  __ret = traits_type::not_eof(__c);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> __ret;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">typename</span> basic_stringbuf<_CharT, _Traits, _Alloc>::int_type</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  basic_stringbuf<_CharT, _Traits, _Alloc>::</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  overflow(int_type __c)</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="keyword">const</span> <span class="keywordtype">bool</span> __testout = this->_M_mode & <a class="code" href="a00791.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (__builtin_expect(!__testout, <span class="keyword">false</span>))</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> traits_type::eof();</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testeof = traits_type::eq_int_type(__c, traits_type::eof());</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> (__builtin_expect(__testeof, <span class="keyword">false</span>))</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</span> traits_type::not_eof(__c);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">const</span> __size_type __capacity = _M_string.capacity();</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">const</span> __size_type __max_size = _M_string.max_size();</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testput = this->pptr() < this->epptr();</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (__builtin_expect(!__testput && __capacity == __max_size, <span class="keyword">false</span>))</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> traits_type::eof();</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// Try to append __c into output sequence in one of two ways.</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// Order these tests done in is unspecified by the standard.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">const</span> char_type __conv = traits_type::to_char_type(__c);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (!__testput)</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// NB: Start ostringstream buffers at 512 chars. This is an</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// experimental value (pronounced "arbitrary" in some of the</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// hipper English-speaking countries), and can be changed to</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// suit particular needs.</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// 169. Bad efficiency of overflow() mandated</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// 432. stringbuf::overflow() makes only one write position</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// available</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> __size_type __opt_len = <a class="code" href="a01706.html#ga47fe7a943a5b88c1bba1032392a04671">std::max</a>(__size_type(2 * __capacity),</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  __size_type(512));</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">const</span> __size_type __len = <a class="code" href="a01706.html#ga976d02d45bf6128ae0490642d5961ced">std::min</a>(__opt_len, __max_size);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  __string_type __tmp;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  __tmp.reserve(__len);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (this->pbase())</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  __tmp.assign(this->pbase(), this->epptr() - this->pbase());</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  __tmp.push_back(__conv);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  _M_string.swap(__tmp);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  _M_sync(const_cast<char_type*>(_M_string.data()),</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  this->gptr() - this->eback(), this->pptr() - this->pbase());</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  *this->pptr() = __conv;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  this->pbump(1);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">return</span> __c;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  }</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">typename</span> basic_stringbuf<_CharT, _Traits, _Alloc>::int_type</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <a class="code" href="a00650.html#a51561fccb6d01fb598c1885de0defc71">basic_stringbuf<_CharT, _Traits, _Alloc>::</a></div>
<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="a00650.html#a51561fccb6d01fb598c1885de0defc71"> 131</a></span> <a class="code" href="a00650.html#a51561fccb6d01fb598c1885de0defc71"> underflow</a>()</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  {</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  int_type __ret = traits_type::eof();</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testin = this->_M_mode & <a class="code" href="a00791.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">if</span> (__testin)</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// Update egptr() to match the actual string end.</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  _M_update_egptr();</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">if</span> (this->gptr() < this->egptr())</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  __ret = traits_type::to_int_type(*this->gptr());</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> __ret;</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> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">typename</span> basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="a00650.html#a87ffed7ed9940e5952303b31be0b6a11">basic_stringbuf<_CharT, _Traits, _Alloc>::</a></div>
<div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="a00650.html#a87ffed7ed9940e5952303b31be0b6a11"> 149</a></span> <a class="code" href="a00650.html#a87ffed7ed9940e5952303b31be0b6a11"> seekoff</a>(off_type __off, ios_base::seekdir __way, ios_base::openmode __mode)</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  pos_type __ret = pos_type(off_type(-1));</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordtype">bool</span> __testin = (<a class="code" href="a00791.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> & this->_M_mode & __mode) != 0;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">bool</span> __testout = (ios_base::out & this->_M_mode & __mode) != 0;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testboth = __testin && __testout && __way != <a class="code" href="a00791.html#a1965600e26ca83d186504a4fd337cb9e">ios_base::cur</a>;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  __testin &= !(__mode & <a class="code" href="a00791.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  __testout &= !(__mode & <a class="code" href="a00791.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>);</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// 453. basic_stringbuf::seekoff need not always fail for an empty stream.</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">const</span> char_type* __beg = __testin ? this->eback() : this->pbase();</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> ((__beg || !__off) && (__testin || __testout || __testboth))</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  _M_update_egptr();</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  off_type __newoffi = __off;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  off_type __newoffo = __newoffi;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">if</span> (__way == <a class="code" href="a00791.html#a1965600e26ca83d186504a4fd337cb9e">ios_base::cur</a>)</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  {</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  __newoffi += this->gptr() - __beg;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  __newoffo += this->pptr() - __beg;</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (__way == <a class="code" href="a00791.html#a505c3780386ccd5ca9679f7264db97f9">ios_base::end</a>)</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  __newoffo = __newoffi += this->egptr() - __beg;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> ((__testin || __testboth)</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  && __newoffi >= 0</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  && this->egptr() - __beg >= __newoffi)</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  this->setg(this->eback(), this->eback() + __newoffi,</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  this->egptr());</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  __ret = pos_type(__newoffi);</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span> ((__testout || __testboth)</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  && __newoffo >= 0</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  && this->egptr() - __beg >= __newoffo)</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  _M_pbump(this->pbase(), this->epptr(), __newoffo);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  __ret = pos_type(__newoffo);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span> __ret;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">typename</span> basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="a00650.html#a763bee40dfc04e2ee2816e322c3af297">basic_stringbuf<_CharT, _Traits, _Alloc>::</a></div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="a00650.html#a763bee40dfc04e2ee2816e322c3af297"> 197</a></span> <a class="code" href="a00650.html#a763bee40dfc04e2ee2816e322c3af297"> seekpos</a>(pos_type __sp, ios_base::openmode __mode)</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  pos_type __ret = pos_type(off_type(-1));</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testin = (<a class="code" href="a00791.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a> & this->_M_mode & __mode) != 0;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testout = (ios_base::out & this->_M_mode & __mode) != 0;</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>  <span class="keyword">const</span> char_type* __beg = __testin ? this->eback() : this->pbase();</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> ((__beg || !off_type(__sp)) && (__testin || __testout))</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  _M_update_egptr();</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>  <span class="keyword">const</span> off_type __pos(__sp);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testpos = (0 <= __pos</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  && __pos <= this->egptr() - __beg);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (__testpos)</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  {</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">if</span> (__testin)</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  this->setg(this->eback(), this->eback() + __pos,</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  this->egptr());</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">if</span> (__testout)</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  _M_pbump(this->pbase(), this->epptr(), __pos);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  __ret = __sp;</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>  }</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span> __ret;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordtype">void</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="a00650.html">basic_stringbuf<_CharT, _Traits, _Alloc>::</a></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <a class="code" href="a00650.html"> _M_sync</a>(char_type* <a class="code" href="a01653.html#ac125ef57d80f05d3af4d85475e2351ea">__base</a>, __size_type __i, __size_type __o)</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testin = _M_mode & <a class="code" href="a00791.html#a652e2323949eea3d906e1c81bd8ce8f7">ios_base::in</a>;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> __testout = _M_mode & <a class="code" href="a00791.html#a7187e216e5d16ec820ea1791002f85e0">ios_base::out</a>;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  char_type* __endg = __base + _M_string.size();</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  char_type* __endp = __base + _M_string.capacity();</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> (__base != _M_string.data())</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// setbuf: __i == size of buffer area (_M_string.size() == 0).</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  __endg += __i;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  __i = 0;</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  __endp = __endg;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  }</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (__testin)</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  this->setg(__base, __base + __i, __endg);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">if</span> (__testout)</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  {</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  _M_pbump(__base, __endp, __o);</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">// egptr() always tracks the string end. When !__testin,</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// for the correct functioning of the streambuf inlines</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// the other get area pointers are identical.</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span> (!__testin)</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  this->setg(__endg, __endg, __endg);</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</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="keyword">template</span> <<span class="keyword">class</span> _CharT, <span class="keyword">class</span> _Traits, <span class="keyword">class</span> _Alloc></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordtype">void</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  basic_stringbuf<_CharT, _Traits, _Alloc>::</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  _M_pbump(char_type* __pbeg, char_type* __pend, off_type __off)</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  {</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  this->setp(__pbeg, __pend);</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">while</span> (__off > __gnu_cxx::__numeric_traits<int>::__max)</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  {</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  this->pbump(__gnu_cxx::__numeric_traits<int>::__max);</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  __off -= __gnu_cxx::__numeric_traits<int>::__max;</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  this->pbump(__off);</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// Inhibit implicit instantiations for required instantiations,</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="comment">// which are defined via explicit instantiations elsewhere.</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="preprocessor">#if _GLIBCXX_EXTERN_TEMPLATE</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="preprocessor"></span> <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_stringbuf<char>;</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_istringstream<char>;</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_ostringstream<char>;</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_stringstream<char>;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="preprocessor">#ifdef _GLIBCXX_USE_WCHAR_T</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="preprocessor"></span> <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_stringbuf<wchar_t>;</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_istringstream<wchar_t>;</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_ostringstream<wchar_t>;</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keyword">extern</span> <span class="keyword">template</span> <span class="keyword">class </span>basic_stringstream<wchar_t>;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> _GLIBCXX_END_NAMESPACE_VERSION</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> } <span class="comment">// namespace std</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="a00791_html_a7187e216e5d16ec820ea1791002f85e0"><div class="ttname"><a href="a00791.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="a01315_source.html#l00378">ios_base.h:378</a></div></div>
<div class="ttc" id="a00791_html_a1965600e26ca83d186504a4fd337cb9e"><div class="ttname"><a href="a00791.html#a1965600e26ca83d186504a4fd337cb9e">std::ios_base::cur</a></div><div class="ttdeci">static const seekdir cur</div><div class="ttdoc">Request a seek relative to the current position within the sequence. </div><div class="ttdef"><b>Definition:</b> <a href="a01315_source.html#l00399">ios_base.h:399</a></div></div>
<div class="ttc" id="a00650_html"><div class="ttname"><a href="a00650.html">std::basic_stringbuf</a></div><div class="ttdoc">The actual work of input and output (for std::string). </div><div class="ttdef"><b>Definition:</b> <a href="a01316_source.html#l00093">iosfwd:93</a></div></div>
<div class="ttc" id="a00650_html_a763bee40dfc04e2ee2816e322c3af297"><div class="ttname"><a href="a00650.html#a763bee40dfc04e2ee2816e322c3af297">std::basic_stringbuf::seekpos</a></div><div class="ttdeci">virtual pos_type seekpos(pos_type __sp, 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="a01538_source.html#l00197">sstream.tcc:197</a></div></div>
<div class="ttc" id="a01653_html_ac125ef57d80f05d3af4d85475e2351ea"><div class="ttname"><a href="a01653.html#ac125ef57d80f05d3af4d85475e2351ea">__gnu_debug::__base</a></div><div class="ttdeci">_Siter_base< _Iterator >::iterator_type __base(_Iterator __it)</div><div class="ttdef"><b>Definition:</b> <a href="a01259_source.html#l00546">functions.h:546</a></div></div>
<div class="ttc" id="a00791_html_a505c3780386ccd5ca9679f7264db97f9"><div class="ttname"><a href="a00791.html#a505c3780386ccd5ca9679f7264db97f9">std::ios_base::end</a></div><div class="ttdeci">static const seekdir end</div><div class="ttdoc">Request a seek relative to the current end of the sequence. </div><div class="ttdef"><b>Definition:</b> <a href="a01315_source.html#l00402">ios_base.h:402</a></div></div>
<div class="ttc" id="a00791_html_a652e2323949eea3d906e1c81bd8ce8f7"><div class="ttname"><a href="a00791.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="a01315_source.html#l00375">ios_base.h:375</a></div></div>
<div class="ttc" id="a00650_html_a51561fccb6d01fb598c1885de0defc71"><div class="ttname"><a href="a00650.html#a51561fccb6d01fb598c1885de0defc71">std::basic_stringbuf::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="a01538_source.html#l00131">sstream.tcc:131</a></div></div>
<div class="ttc" id="a01706_html_ga47fe7a943a5b88c1bba1032392a04671"><div class="ttname"><a href="a01706.html#ga47fe7a943a5b88c1bba1032392a04671">std::max</a></div><div class="ttdeci">const _Tp & max(const _Tp &, const _Tp &)</div><div class="ttdoc">This does what you think it does. </div><div class="ttdef"><b>Definition:</b> <a href="a01547_source.html#l00216">stl_algobase.h:216</a></div></div>
<div class="ttc" id="a00650_html_a87ffed7ed9940e5952303b31be0b6a11"><div class="ttname"><a href="a00650.html#a87ffed7ed9940e5952303b31be0b6a11">std::basic_stringbuf::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="a01538_source.html#l00149">sstream.tcc:149</a></div></div>
<div class="ttc" id="a01706_html_ga976d02d45bf6128ae0490642d5961ced"><div class="ttname"><a href="a01706.html#ga976d02d45bf6128ae0490642d5961ced">std::min</a></div><div class="ttdeci">const _Tp & min(const _Tp &, const _Tp &)</div><div class="ttdoc">This does what you think it does. </div><div class="ttdef"><b>Definition:</b> <a href="a01547_source.html#l00193">stl_algobase.h:193</a></div></div>
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