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<a href="a00881.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// File based streams -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,</span>
<a name="l00004"></a>00004 <span class="comment">// 2006, 2007, 2008, 2009, 2010, 2011</span>
<a name="l00005"></a>00005 <span class="comment">// Free Software Foundation, Inc.</span>
<a name="l00006"></a>00006 <span class="comment">//</span>
<a name="l00007"></a>00007 <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span>
<a name="l00008"></a>00008 <span class="comment">// software; you can redistribute it and/or modify it under the</span>
<a name="l00009"></a>00009 <span class="comment">// terms of the GNU General Public License as published by the</span>
<a name="l00010"></a>00010 <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00011"></a>00011 <span class="comment">// any later version.</span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00014"></a>00014 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00015"></a>00015 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00016"></a>00016 <span class="comment">// GNU General Public License for more details.</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00019"></a>00019 <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00020"></a>00020 <span class="comment">// 3.1, as published by the Free Software Foundation.</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="comment">// You should have received a copy of the GNU General Public License and</span>
<a name="l00023"></a>00023 <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00024"></a>00024 <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span>
<a name="l00025"></a>00025 <span class="comment">// <http://www.gnu.org/licenses/>.</span>
<a name="l00026"></a>00026 <span class="comment"></span>
<a name="l00027"></a>00027 <span class="comment">/** @file include/fstream</span>
<a name="l00028"></a>00028 <span class="comment"> * This is a Standard C++ Library header.</span>
<a name="l00029"></a>00029 <span class="comment"> */</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="comment">//</span>
<a name="l00032"></a>00032 <span class="comment">// ISO C++ 14882: 27.8 File-based streams</span>
<a name="l00033"></a>00033 <span class="comment">//</span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="preprocessor">#ifndef _GLIBCXX_FSTREAM</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define _GLIBCXX_FSTREAM 1</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>
<a name="l00038"></a>00038 <span class="preprocessor">#pragma GCC system_header</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <<a class="code" href="a00912.html">istream</a>></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <<a class="code" href="a00967.html">ostream</a>></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <<a class="code" href="a00807.html">bits/codecvt.h</a>></span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <cstdio></span> <span class="comment">// For BUFSIZ</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <<a class="code" href="a00766.html">bits/basic_file.h</a>></span> <span class="comment">// For __basic_file, __c_lock</span>
<a name="l00045"></a>00045 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#include <string></span> <span class="comment">// For std::string overloads.</span>
<a name="l00047"></a>00047 <span class="preprocessor">#endif</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span>
<a name="l00049"></a>00049 <span class="keyword">namespace </span>std _GLIBCXX_VISIBILITY(default)
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 _GLIBCXX_BEGIN_NAMESPACE_VERSION
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">// [27.8.1.1] template class basic_filebuf</span><span class="comment"></span>
<a name="l00054"></a>00054 <span class="comment"> /**</span>
<a name="l00055"></a>00055 <span class="comment"> * @brief The actual work of input and output (for files).</span>
<a name="l00056"></a>00056 <span class="comment"> * @ingroup io</span>
<a name="l00057"></a>00057 <span class="comment"> *</span>
<a name="l00058"></a>00058 <span class="comment"> * This class associates both its input and output sequence with an</span>
<a name="l00059"></a>00059 <span class="comment"> * external disk file, and maintains a joint file position for both</span>
<a name="l00060"></a>00060 <span class="comment"> * sequences. Many of its semantics are described in terms of similar</span>
<a name="l00061"></a>00061 <span class="comment"> * behavior in the Standard C Library's @c FILE streams.</span>
<a name="l00062"></a>00062 <span class="comment"> */</span>
<a name="l00063"></a>00063 <span class="comment">// Requirements on traits_type, specific to this class:</span>
<a name="l00064"></a>00064 <span class="comment">// traits_type::pos_type must be fpos<traits_type::state_type></span>
<a name="l00065"></a>00065 <span class="comment">// traits_type::off_type must be streamoff</span>
<a name="l00066"></a>00066 <span class="comment">// traits_type::state_type must be Assignable and DefaultConstructible,</span>
<a name="l00067"></a>00067 <span class="comment">// and traits_type::state_type() must be the initial state for codecvt.</span>
<a name="l00068"></a>00068 <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits>
<a name="l00069"></a><a class="code" href="a00247.html">00069</a> <span class="keyword">class </span><a class="code" href="a00247.html" title="The actual work of input and output (for files).This class associates both its input and output seque...">basic_filebuf</a> : <span class="keyword">public</span> <a class="code" href="a00252.html" title="The actual work of input and output (interface).This is a base class. Derived stream buffers each con...">basic_streambuf</a><_CharT, _Traits>
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 <span class="keyword">public</span>:
<a name="l00072"></a>00072 <span class="comment">// Types:</span>
<a name="l00073"></a><a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">00073</a> <span class="keyword">typedef</span> _CharT <a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">char_type</a>;
<a name="l00074"></a><a class="code" href="a00247.html#aacf485421cd4e82fa571934baf0c1103">00074</a> <span class="keyword">typedef</span> _Traits <a class="code" href="a00247.html#aacf485421cd4e82fa571934baf0c1103">traits_type</a>;
<a name="l00075"></a><a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">00075</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type <a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">int_type</a>;
<a name="l00076"></a><a class="code" href="a00247.html#ad3214736a288be0799d5dc49b5e2f597">00076</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type <a class="code" href="a00247.html#ad3214736a288be0799d5dc49b5e2f597">pos_type</a>;
<a name="l00077"></a><a class="code" href="a00247.html#afc4d417fe3b280f53f74911ad3f2d383">00077</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type <a class="code" href="a00247.html#afc4d417fe3b280f53f74911ad3f2d383">off_type</a>;
<a name="l00078"></a>00078
<a name="l00079"></a><a class="code" href="a00247.html#a7cf11cc06504dfc70a54a78a204412be">00079</a> <span class="keyword">typedef</span> <a class="code" href="a00252.html">basic_streambuf<char_type, traits_type></a> <a class="code" href="a00247.html#a7cf11cc06504dfc70a54a78a204412be" title="This is a non-standard type.">__streambuf_type</a>;
<a name="l00080"></a>00080 <span class="keyword">typedef</span> <a class="code" href="a00247.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a00247.html">__filebuf_type</a>;
<a name="l00081"></a>00081 <span class="keyword">typedef</span> __basic_file<char> __file_type;
<a name="l00082"></a>00082 <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::state_type __state_type;
<a name="l00083"></a>00083 <span class="keyword">typedef</span> <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt<char_type, char, __state_type></a> <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">__codecvt_type</a>;
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>; <span class="comment">// For sync_with_stdio.</span>
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keyword">protected</span>:
<a name="l00088"></a>00088 <span class="comment">// Data Members:</span>
<a name="l00089"></a>00089 <span class="comment">// MT lock inherited from libio or other low-level io library.</span>
<a name="l00090"></a>00090 __c_lock _M_lock;
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">// External buffer.</span>
<a name="l00093"></a>00093 __file_type _M_file;
<a name="l00094"></a>00094 <span class="comment"></span>
<a name="l00095"></a>00095 <span class="comment"> /// Place to stash in || out || in | out settings for current filebuf.</span>
<a name="l00096"></a><a class="code" href="a00247.html#a14cdd23152cee458aaa655cf9508f9a6">00096</a> <span class="comment"></span> ios_base::openmode <a class="code" href="a00247.html#a14cdd23152cee458aaa655cf9508f9a6" title="Place to stash in || out || in | out settings for current filebuf.">_M_mode</a>;
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="comment">// Beginning state type for codecvt.</span>
<a name="l00099"></a>00099 __state_type _M_state_beg;
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// During output, the state that corresponds to pptr(),</span>
<a name="l00102"></a>00102 <span class="comment">// during input, the state that corresponds to egptr() and</span>
<a name="l00103"></a>00103 <span class="comment">// _M_ext_next.</span>
<a name="l00104"></a>00104 __state_type _M_state_cur;
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="comment">// Not used for output. During input, the state that corresponds</span>
<a name="l00107"></a>00107 <span class="comment">// to eback() and _M_ext_buf.</span>
<a name="l00108"></a>00108 __state_type _M_state_last;
<a name="l00109"></a>00109 <span class="comment"></span>
<a name="l00110"></a>00110 <span class="comment"> /// Pointer to the beginning of internal buffer.</span>
<a name="l00111"></a><a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07">00111</a> <span class="comment"></span> <a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">char_type</a>* <a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>;
<a name="l00112"></a>00112 <span class="comment"></span>
<a name="l00113"></a>00113 <span class="comment"> /**</span>
<a name="l00114"></a>00114 <span class="comment"> * Actual size of internal buffer. This number is equal to the size</span>
<a name="l00115"></a>00115 <span class="comment"> * of the put area + 1 position, reserved for the overflow char of</span>
<a name="l00116"></a>00116 <span class="comment"> * a full area.</span>
<a name="l00117"></a>00117 <span class="comment"> */</span>
<a name="l00118"></a><a class="code" href="a00247.html#a59de9f582ce410ea2c7583eaf4228e2f">00118</a> <span class="keywordtype">size_t</span> <a class="code" href="a00247.html#a59de9f582ce410ea2c7583eaf4228e2f">_M_buf_size</a>;
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="comment">// Set iff _M_buf is allocated memory from _M_allocate_internal_buffer.</span>
<a name="l00121"></a>00121 <span class="keywordtype">bool</span> _M_buf_allocated;
<a name="l00122"></a>00122 <span class="comment"></span>
<a name="l00123"></a>00123 <span class="comment"> /**</span>
<a name="l00124"></a>00124 <span class="comment"> * _M_reading == false && _M_writing == false for @b uncommitted mode;</span>
<a name="l00125"></a>00125 <span class="comment"> * _M_reading == true for @b read mode;</span>
<a name="l00126"></a>00126 <span class="comment"> * _M_writing == true for @b write mode;</span>
<a name="l00127"></a>00127 <span class="comment"> *</span>
<a name="l00128"></a>00128 <span class="comment"> * NB: _M_reading == true && _M_writing == true is unused.</span>
<a name="l00129"></a>00129 <span class="comment"> */</span>
<a name="l00130"></a><a class="code" href="a00247.html#acde765e7a5ddaca79683176fe981cec1">00130</a> <span class="keywordtype">bool</span> <a class="code" href="a00247.html#acde765e7a5ddaca79683176fe981cec1">_M_reading</a>;
<a name="l00131"></a>00131 <span class="keywordtype">bool</span> _M_writing;
<a name="l00132"></a>00132 <span class="comment"></span>
<a name="l00133"></a>00133 <span class="comment"> //@{</span>
<a name="l00134"></a>00134 <span class="comment"></span><span class="comment"> /**</span>
<a name="l00135"></a>00135 <span class="comment"> * Necessary bits for putback buffer management.</span>
<a name="l00136"></a>00136 <span class="comment"> *</span>
<a name="l00137"></a>00137 <span class="comment"> * @note pbacks of over one character are not currently supported.</span>
<a name="l00138"></a>00138 <span class="comment"> */</span>
<a name="l00139"></a><a class="code" href="a00247.html#a0763759a2b15f0d18f869978aded8f84">00139</a> <a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">char_type</a> <a class="code" href="a00247.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a>;
<a name="l00140"></a><a class="code" href="a00247.html#a293a2014b3f6801df3764e2c502e6e25">00140</a> <a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">char_type</a>* <a class="code" href="a00247.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a>;
<a name="l00141"></a><a class="code" href="a00247.html#a65dce41d776ab7f376607436e7c5455c">00141</a> <a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">char_type</a>* <a class="code" href="a00247.html#a65dce41d776ab7f376607436e7c5455c">_M_pback_end_save</a>;
<a name="l00142"></a><a class="code" href="a00247.html#aa144642d688ad4c36807ce149e632995">00142</a> <span class="keywordtype">bool</span> <a class="code" href="a00247.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a>;<span class="comment"></span>
<a name="l00143"></a>00143 <span class="comment"> //@}</span>
<a name="l00144"></a>00144 <span class="comment"></span>
<a name="l00145"></a>00145 <span class="comment">// Cached codecvt facet.</span>
<a name="l00146"></a>00146 <span class="keyword">const</span> <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">__codecvt_type</a>* _M_codecvt;
<a name="l00147"></a>00147 <span class="comment"></span>
<a name="l00148"></a>00148 <span class="comment"> /**</span>
<a name="l00149"></a>00149 <span class="comment"> * Buffer for external characters. Used for input when</span>
<a name="l00150"></a>00150 <span class="comment"> * codecvt::always_noconv() == false. When valid, this corresponds</span>
<a name="l00151"></a>00151 <span class="comment"> * to eback().</span>
<a name="l00152"></a>00152 <span class="comment"> */</span>
<a name="l00153"></a><a class="code" href="a00247.html#a65f15e25bc11ffc20ca24e1c437ee5c0">00153</a> <span class="keywordtype">char</span>* <a class="code" href="a00247.html#a65f15e25bc11ffc20ca24e1c437ee5c0">_M_ext_buf</a>;
<a name="l00154"></a>00154 <span class="comment"></span>
<a name="l00155"></a>00155 <span class="comment"> /**</span>
<a name="l00156"></a>00156 <span class="comment"> * Size of buffer held by _M_ext_buf.</span>
<a name="l00157"></a>00157 <span class="comment"> */</span>
<a name="l00158"></a><a class="code" href="a00247.html#a284d196740028e4047586fe923e7a595">00158</a> <a class="code" href="a01137.html#a05eef5582eb5de62b76db4916f7adb84" title="Integral type for I/O operation counts and buffer sizes.">streamsize</a> <a class="code" href="a00247.html#a284d196740028e4047586fe923e7a595">_M_ext_buf_size</a>;
<a name="l00159"></a>00159 <span class="comment"></span>
<a name="l00160"></a>00160 <span class="comment"> /**</span>
<a name="l00161"></a>00161 <span class="comment"> * Pointers into the buffer held by _M_ext_buf that delimit a</span>
<a name="l00162"></a>00162 <span class="comment"> * subsequence of bytes that have been read but not yet converted.</span>
<a name="l00163"></a>00163 <span class="comment"> * When valid, _M_ext_next corresponds to egptr().</span>
<a name="l00164"></a>00164 <span class="comment"> */</span>
<a name="l00165"></a><a class="code" href="a00247.html#af4a3bae8038d32dffd03676c93feccbc">00165</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="a00247.html#af4a3bae8038d32dffd03676c93feccbc">_M_ext_next</a>;
<a name="l00166"></a>00166 <span class="keywordtype">char</span>* _M_ext_end;
<a name="l00167"></a>00167 <span class="comment"></span>
<a name="l00168"></a>00168 <span class="comment"> /**</span>
<a name="l00169"></a>00169 <span class="comment"> * Initializes pback buffers, and moves normal buffers to safety.</span>
<a name="l00170"></a>00170 <span class="comment"> * Assumptions:</span>
<a name="l00171"></a>00171 <span class="comment"> * _M_in_cur has already been moved back</span>
<a name="l00172"></a>00172 <span class="comment"> */</span>
<a name="l00173"></a>00173 <span class="keywordtype">void</span>
<a name="l00174"></a><a class="code" href="a00247.html#ac4c7480aea8087a568d10b87a06b4d4e">00174</a> <a class="code" href="a00247.html#ac4c7480aea8087a568d10b87a06b4d4e">_M_create_pback</a>()
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (!<a class="code" href="a00247.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a>)
<a name="l00177"></a>00177 {
<a name="l00178"></a>00178 <a class="code" href="a00247.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a> = this-><a class="code" href="a00252.html#ad631f06db33ec1d3888302ec244a6ae9" title="Access to the get area.">gptr</a>();
<a name="l00179"></a>00179 <a class="code" href="a00247.html#a65dce41d776ab7f376607436e7c5455c">_M_pback_end_save</a> = this-><a class="code" href="a00252.html#a271d085f48ab53194825e04e7caab94c" title="Access to the get area.">egptr</a>();
<a name="l00180"></a>00180 this-><a class="code" href="a00252.html#a38c9b562c20b30bf9d21cf0e4dc90356" title="Setting the three read area pointers.">setg</a>(&<a class="code" href="a00247.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a>, &<a class="code" href="a00247.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a>, &<a class="code" href="a00247.html#a0763759a2b15f0d18f869978aded8f84">_M_pback</a> + 1);
<a name="l00181"></a>00181 <a class="code" href="a00247.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a> = <span class="keyword">true</span>;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 <span class="comment"></span>
<a name="l00185"></a>00185 <span class="comment"> /**</span>
<a name="l00186"></a>00186 <span class="comment"> * Deactivates pback buffer contents, and restores normal buffer.</span>
<a name="l00187"></a>00187 <span class="comment"> * Assumptions:</span>
<a name="l00188"></a>00188 <span class="comment"> * The pback buffer has only moved forward.</span>
<a name="l00189"></a>00189 <span class="comment"> */</span>
<a name="l00190"></a>00190 <span class="keywordtype">void</span>
<a name="l00191"></a><a class="code" href="a00247.html#a7b95d650e7a161b18ca9fcbd3f792253">00191</a> <a class="code" href="a00247.html#a7b95d650e7a161b18ca9fcbd3f792253">_M_destroy_pback</a>() throw()
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 <span class="keywordflow">if</span> (<a class="code" href="a00247.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a>)
<a name="l00194"></a>00194 {
<a name="l00195"></a>00195 <span class="comment">// Length _M_in_cur moved in the pback buffer.</span>
<a name="l00196"></a>00196 <a class="code" href="a00247.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a> += this-><a class="code" href="a00252.html#ad631f06db33ec1d3888302ec244a6ae9" title="Access to the get area.">gptr</a>() != this-><a class="code" href="a00252.html#a8a98bb10a958b9f1ad62e5444ff614ba" title="Access to the get area.">eback</a>();
<a name="l00197"></a>00197 this-><a class="code" href="a00252.html#a38c9b562c20b30bf9d21cf0e4dc90356" title="Setting the three read area pointers.">setg</a>(<a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>, <a class="code" href="a00247.html#a293a2014b3f6801df3764e2c502e6e25">_M_pback_cur_save</a>, <a class="code" href="a00247.html#a65dce41d776ab7f376607436e7c5455c">_M_pback_end_save</a>);
<a name="l00198"></a>00198 <a class="code" href="a00247.html#aa144642d688ad4c36807ce149e632995">_M_pback_init</a> = <span class="keyword">false</span>;
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="keyword">public</span>:
<a name="l00203"></a>00203 <span class="comment">// Constructors/destructor:</span><span class="comment"></span>
<a name="l00204"></a>00204 <span class="comment"> /**</span>
<a name="l00205"></a>00205 <span class="comment"> * @brief Does not open any files.</span>
<a name="l00206"></a>00206 <span class="comment"> *</span>
<a name="l00207"></a>00207 <span class="comment"> * The default constructor initializes the parent class using its</span>
<a name="l00208"></a>00208 <span class="comment"> * own default ctor.</span>
<a name="l00209"></a>00209 <span class="comment"> */</span>
<a name="l00210"></a>00210 <a class="code" href="a00247.html#add2d16a8965c490cd9b4cc95b958e09f" title="Does not open any files.">basic_filebuf</a>();
<a name="l00211"></a>00211 <span class="comment"></span>
<a name="l00212"></a>00212 <span class="comment"> /**</span>
<a name="l00213"></a>00213 <span class="comment"> * @brief The destructor closes the file first.</span>
<a name="l00214"></a>00214 <span class="comment"> */</span>
<a name="l00215"></a>00215 <span class="keyword">virtual</span>
<a name="l00216"></a><a class="code" href="a00247.html#a226a8efc1add60c0fc04ce2714a56b4c">00216</a> <a class="code" href="a00247.html#a226a8efc1add60c0fc04ce2714a56b4c" title="The destructor closes the file first.">~basic_filebuf</a>()
<a name="l00217"></a>00217 { this-><a class="code" href="a00247.html#a5e13a128abb0a5dd8ef1e3d10597031f" title="Closes the currently associated file.">close</a>(); }
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <span class="comment">// Members:</span><span class="comment"></span>
<a name="l00220"></a>00220 <span class="comment"> /**</span>
<a name="l00221"></a>00221 <span class="comment"> * @brief Returns true if the external file is open.</span>
<a name="l00222"></a>00222 <span class="comment"> */</span>
<a name="l00223"></a>00223 <span class="keywordtype">bool</span>
<a name="l00224"></a><a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc">00224</a> <a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>() <span class="keyword">const</span> throw()
<a name="l00225"></a>00225 { <span class="keywordflow">return</span> _M_file.is_open(); }
<a name="l00226"></a>00226 <span class="comment"></span>
<a name="l00227"></a>00227 <span class="comment"> /**</span>
<a name="l00228"></a>00228 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00229"></a>00229 <span class="comment"> * @param s The name of the file.</span>
<a name="l00230"></a>00230 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00231"></a>00231 <span class="comment"> * @return @c this on success, NULL on failure</span>
<a name="l00232"></a>00232 <span class="comment"> *</span>
<a name="l00233"></a>00233 <span class="comment"> * If a file is already open, this function immediately fails.</span>
<a name="l00234"></a>00234 <span class="comment"> * Otherwise it tries to open the file named @a s using the flags</span>
<a name="l00235"></a>00235 <span class="comment"> * given in @a mode.</span>
<a name="l00236"></a>00236 <span class="comment"> *</span>
<a name="l00237"></a>00237 <span class="comment"> * Table 92, adapted here, gives the relation between openmode</span>
<a name="l00238"></a>00238 <span class="comment"> * combinations and the equivalent fopen() flags.</span>
<a name="l00239"></a>00239 <span class="comment"> * (NB: lines app, in|out|app, in|app, binary|app, binary|in|out|app,</span>
<a name="l00240"></a>00240 <span class="comment"> * and binary|in|app per DR 596)</span>
<a name="l00241"></a>00241 <span class="comment"> * +---------------------------------------------------------+</span>
<a name="l00242"></a>00242 <span class="comment"> * | ios_base Flag combination stdio equivalent |</span>
<a name="l00243"></a>00243 <span class="comment"> * |binary in out trunc app |</span>
<a name="l00244"></a>00244 <span class="comment"> * +---------------------------------------------------------+</span>
<a name="l00245"></a>00245 <span class="comment"> * | + w |</span>
<a name="l00246"></a>00246 <span class="comment"> * | + + a |</span>
<a name="l00247"></a>00247 <span class="comment"> * | + a |</span>
<a name="l00248"></a>00248 <span class="comment"> * | + + w |</span>
<a name="l00249"></a>00249 <span class="comment"> * | + r |</span>
<a name="l00250"></a>00250 <span class="comment"> * | + + r+ |</span>
<a name="l00251"></a>00251 <span class="comment"> * | + + + w+ |</span>
<a name="l00252"></a>00252 <span class="comment"> * | + + + a+ |</span>
<a name="l00253"></a>00253 <span class="comment"> * | + + a+ |</span>
<a name="l00254"></a>00254 <span class="comment"> * +---------------------------------------------------------+</span>
<a name="l00255"></a>00255 <span class="comment"> * | + + wb |</span>
<a name="l00256"></a>00256 <span class="comment"> * | + + + ab |</span>
<a name="l00257"></a>00257 <span class="comment"> * | + + ab |</span>
<a name="l00258"></a>00258 <span class="comment"> * | + + + wb |</span>
<a name="l00259"></a>00259 <span class="comment"> * | + + rb |</span>
<a name="l00260"></a>00260 <span class="comment"> * | + + + r+b |</span>
<a name="l00261"></a>00261 <span class="comment"> * | + + + + w+b |</span>
<a name="l00262"></a>00262 <span class="comment"> * | + + + + a+b |</span>
<a name="l00263"></a>00263 <span class="comment"> * | + + + a+b |</span>
<a name="l00264"></a>00264 <span class="comment"> * +---------------------------------------------------------+</span>
<a name="l00265"></a>00265 <span class="comment"> */</span>
<a name="l00266"></a>00266 __filebuf_type*
<a name="l00267"></a>00267 <a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode);
<a name="l00268"></a>00268
<a name="l00269"></a>00269 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00270"></a>00270 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00271"></a>00271 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00272"></a>00272 <span class="comment"> * @param s The name of the file.</span>
<a name="l00273"></a>00273 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00274"></a>00274 <span class="comment"> * @return @c this on success, NULL on failure</span>
<a name="l00275"></a>00275 <span class="comment"> */</span>
<a name="l00276"></a>00276 __filebuf_type*
<a name="l00277"></a><a class="code" href="a00247.html#a541062313b01b7bb74af2582f88a365f">00277</a> <a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s, ios_base::openmode __mode)
<a name="l00278"></a>00278 { <span class="keywordflow">return</span> <a class="code" href="a00247.html#a541062313b01b7bb74af2582f88a365f" title="Opens an external file.">open</a>(__s.<a class="code" href="a00253.html#a0f3d8c7b031efea71704ca87660012e0" title="Return const pointer to null-terminated contents.">c_str</a>(), __mode); }
<a name="l00279"></a>00279 <span class="preprocessor">#endif</span>
<a name="l00280"></a>00280 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00281"></a>00281 <span class="comment"> /**</span>
<a name="l00282"></a>00282 <span class="comment"> * @brief Closes the currently associated file.</span>
<a name="l00283"></a>00283 <span class="comment"> * @return @c this on success, NULL on failure</span>
<a name="l00284"></a>00284 <span class="comment"> *</span>
<a name="l00285"></a>00285 <span class="comment"> * If no file is currently open, this function immediately fails.</span>
<a name="l00286"></a>00286 <span class="comment"> *</span>
<a name="l00287"></a>00287 <span class="comment"> * If a <em>put buffer area</em> exists, @c overflow(eof) is</span>
<a name="l00288"></a>00288 <span class="comment"> * called to flush all the characters. The file is then</span>
<a name="l00289"></a>00289 <span class="comment"> * closed.</span>
<a name="l00290"></a>00290 <span class="comment"> *</span>
<a name="l00291"></a>00291 <span class="comment"> * If any operations fail, this function also fails.</span>
<a name="l00292"></a>00292 <span class="comment"> */</span>
<a name="l00293"></a>00293 __filebuf_type*
<a name="l00294"></a>00294 <a class="code" href="a00247.html#a5e13a128abb0a5dd8ef1e3d10597031f" title="Closes the currently associated file.">close</a>();
<a name="l00295"></a>00295
<a name="l00296"></a>00296 <span class="keyword">protected</span>:
<a name="l00297"></a>00297 <span class="keywordtype">void</span>
<a name="l00298"></a>00298 _M_allocate_internal_buffer();
<a name="l00299"></a>00299
<a name="l00300"></a>00300 <span class="keywordtype">void</span>
<a name="l00301"></a>00301 _M_destroy_internal_buffer() throw();
<a name="l00302"></a>00302
<a name="l00303"></a>00303 <span class="comment">// [27.8.1.4] overridden virtual functions</span>
<a name="l00304"></a>00304 virtual <a class="code" href="a01137.html#a05eef5582eb5de62b76db4916f7adb84" title="Integral type for I/O operation counts and buffer sizes.">streamsize</a>
<a name="l00305"></a>00305 <a class="code" href="a00247.html#a0e8e4218ba9766e34b74e69b17fb28b3" title="Investigating the data available.">showmanyc</a>();
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="comment">// Stroustrup, 1998, p. 628</span>
<a name="l00308"></a>00308 <span class="comment">// underflow() and uflow() functions are called to get the next</span>
<a name="l00309"></a>00309 <span class="comment">// character from the real input source when the buffer is empty.</span>
<a name="l00310"></a>00310 <span class="comment">// Buffered input uses underflow()</span>
<a name="l00311"></a>00311
<a name="l00312"></a>00312 virtual <a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">int_type</a>
<a name="l00313"></a>00313 <a class="code" href="a00247.html#a051ec9d0aa68d3bbf3a2b8cb2e41c93b" title="Fetches more data from the controlled sequence.">underflow</a>();
<a name="l00314"></a>00314
<a name="l00315"></a>00315 virtual <a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">int_type</a>
<a name="l00316"></a>00316 <a class="code" href="a00247.html#a98e6cafd6256f907c4fff74afa49be3e" title="Tries to back up the input sequence.">pbackfail</a>(<a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">int_type</a> __c = _Traits::eof());
<a name="l00317"></a>00317
<a name="l00318"></a>00318 <span class="comment">// Stroustrup, 1998, p 648</span>
<a name="l00319"></a>00319 <span class="comment">// The overflow() function is called to transfer characters to the</span>
<a name="l00320"></a>00320 <span class="comment">// real output destination when the buffer is full. A call to</span>
<a name="l00321"></a>00321 <span class="comment">// overflow(c) outputs the contents of the buffer plus the</span>
<a name="l00322"></a>00322 <span class="comment">// character c.</span>
<a name="l00323"></a>00323 <span class="comment">// 27.5.2.4.5</span>
<a name="l00324"></a>00324 <span class="comment">// Consume some sequence of the characters in the pending sequence.</span>
<a name="l00325"></a>00325 virtual <a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">int_type</a>
<a name="l00326"></a>00326 <a class="code" href="a00247.html#ac1941000c0d1480052cc8ee84fd8a665" title="Consumes data from the buffer; writes to the controlled sequence.">overflow</a>(<a class="code" href="a00247.html#a468d92e853b45e38905a014fc14b8b33">int_type</a> __c = _Traits::eof());
<a name="l00327"></a>00327
<a name="l00328"></a>00328 <span class="comment">// Convert internal byte sequence to external, char-based</span>
<a name="l00329"></a>00329 <span class="comment">// sequence via codecvt.</span>
<a name="l00330"></a>00330 <span class="keywordtype">bool</span>
<a name="l00331"></a>00331 _M_convert_to_external(<a class="code" href="a00247.html#aa966e9fb8cb5ec6c681f671858d84861">char_type</a>*, <a class="code" href="a01137.html#a05eef5582eb5de62b76db4916f7adb84" title="Integral type for I/O operation counts and buffer sizes.">streamsize</a>);
<a name="l00332"></a>00332 <span class="comment"></span>
<a name="l00333"></a>00333 <span class="comment"> /**</span>
<a name="l00334"></a>00334 <span class="comment"> * @brief Manipulates the buffer.</span>
<a name="l00335"></a>00335 <span class="comment"> * @param s Pointer to a buffer area.</span>
<a name="l00336"></a>00336 <span class="comment"> * @param n Size of @a s.</span>
<a name="l00337"></a>00337 <span class="comment"> * @return @c this</span>
<a name="l00338"></a>00338 <span class="comment"> *</span>
<a name="l00339"></a>00339 <span class="comment"> * If no file has been opened, and both @a s and @a n are zero, then</span>
<a name="l00340"></a>00340 <span class="comment"> * the stream becomes unbuffered. Otherwise, @c s is used as a</span>
<a name="l00341"></a>00341 <span class="comment"> * buffer; see</span>
<a name="l00342"></a>00342 <span class="comment"> * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch25s02.html</span>
<a name="l00343"></a>00343 <span class="comment"> * for more.</span>
<a name="l00344"></a>00344 <span class="comment"> */</span>
<a name="l00345"></a>00345 virtual <a class="code" href="a00247.html#a7cf11cc06504dfc70a54a78a204412be" title="This is a non-standard type.">__streambuf_type</a>*
<a name="l00346"></a>00346 <a class="code" href="a00247.html#afdc468aedafb80e43f14569d09485e6b" title="Manipulates the buffer.">setbuf</a>(char_type* __s, streamsize __n);
<a name="l00347"></a>00347
<a name="l00348"></a>00348 virtual <a class="code" href="a00247.html#ad3214736a288be0799d5dc49b5e2f597">pos_type</a>
<a name="l00349"></a>00349 <a class="code" href="a00247.html#a0152beebcac8c9542b6b0efe3de5bbfb" title="Alters the stream positions.">seekoff</a>(<a class="code" href="a00247.html#afc4d417fe3b280f53f74911ad3f2d383">off_type</a> __off, <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::seekdir __way,
<a name="l00350"></a>00350 <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::openmode __mode = <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::in | <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::out);
<a name="l00351"></a>00351
<a name="l00352"></a>00352 virtual <a class="code" href="a00247.html#ad3214736a288be0799d5dc49b5e2f597">pos_type</a>
<a name="l00353"></a>00353 <a class="code" href="a00247.html#a91365d684bb298cb7ad42e3c73cd0252" title="Alters the stream positions.">seekpos</a>(<a class="code" href="a00247.html#ad3214736a288be0799d5dc49b5e2f597">pos_type</a> __pos,
<a name="l00354"></a>00354 <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::openmode __mode = <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::in | <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::out);
<a name="l00355"></a>00355
<a name="l00356"></a>00356 <span class="comment">// Common code for seekoff, seekpos, and overflow</span>
<a name="l00357"></a>00357 <a class="code" href="a00247.html#ad3214736a288be0799d5dc49b5e2f597">pos_type</a>
<a name="l00358"></a>00358 _M_seek(<a class="code" href="a00247.html#afc4d417fe3b280f53f74911ad3f2d383">off_type</a> __off, <a class="code" href="a00528.html" title="The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...">ios_base</a>::seekdir __way, __state_type __state);
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="keywordtype">int</span>
<a name="l00361"></a>00361 _M_get_ext_pos(__state_type &__state);
<a name="l00362"></a>00362
<a name="l00363"></a>00363 virtual <span class="keywordtype">int</span>
<a name="l00364"></a>00364 <a class="code" href="a00247.html#af42cd30ec66c6eb0df56026098b6e04f" title="Synchronizes the buffer arrays with the controlled sequences.">sync</a>();
<a name="l00365"></a>00365
<a name="l00366"></a>00366 virtual <span class="keywordtype">void</span>
<a name="l00367"></a>00367 <a class="code" href="a00247.html#a4e8214d23c9895a180231de6cf463449" title="Changes translations.">imbue</a>(const <a class="code" href="a00581.html" title="Container class for localization functionality.The locale class is first a class wrapper for C librar...">locale</a>& __loc);
<a name="l00368"></a>00368
<a name="l00369"></a>00369 virtual streamsize
<a name="l00370"></a>00370 <a class="code" href="a00247.html#a4fb6d662a8351a9c790be9fbe78be8b4" title="Multiple character extraction.">xsgetn</a>(char_type* __s, streamsize __n);
<a name="l00371"></a>00371
<a name="l00372"></a>00372 virtual streamsize
<a name="l00373"></a>00373 <a class="code" href="a00247.html#a9e78a1d5dec2c7eea816ada4e43d7576" title="Multiple character insertion.">xsputn</a>(const char_type* __s, streamsize __n);
<a name="l00374"></a>00374
<a name="l00375"></a>00375 <span class="comment">// Flushes output buffer, then writes unshift sequence.</span>
<a name="l00376"></a>00376 <span class="keywordtype">bool</span>
<a name="l00377"></a>00377 _M_terminate_output();
<a name="l00378"></a>00378 <span class="comment"></span>
<a name="l00379"></a>00379 <span class="comment"> /**</span>
<a name="l00380"></a>00380 <span class="comment"> * This function sets the pointers of the internal buffer, both get</span>
<a name="l00381"></a>00381 <span class="comment"> * and put areas. Typically:</span>
<a name="l00382"></a>00382 <span class="comment"> *</span>
<a name="l00383"></a>00383 <span class="comment"> * __off == egptr() - eback() upon underflow/uflow (@b read mode);</span>
<a name="l00384"></a>00384 <span class="comment"> * __off == 0 upon overflow (@b write mode);</span>
<a name="l00385"></a>00385 <span class="comment"> * __off == -1 upon open, setbuf, seekoff/pos (@b uncommitted mode).</span>
<a name="l00386"></a>00386 <span class="comment"> *</span>
<a name="l00387"></a>00387 <span class="comment"> * NB: epptr() - pbase() == _M_buf_size - 1, since _M_buf_size</span>
<a name="l00388"></a>00388 <span class="comment"> * reflects the actual allocated memory and the last cell is reserved</span>
<a name="l00389"></a>00389 <span class="comment"> * for the overflow char of a full put area.</span>
<a name="l00390"></a>00390 <span class="comment"> */</span>
<a name="l00391"></a>00391 <span class="keywordtype">void</span>
<a name="l00392"></a><a class="code" href="a00247.html#af3d033b08f1641d4594fb5d21eb2db89">00392</a> <a class="code" href="a00247.html#af3d033b08f1641d4594fb5d21eb2db89">_M_set_buffer</a>(streamsize __off)
<a name="l00393"></a>00393 {
<a name="l00394"></a>00394 <span class="keyword">const</span> <span class="keywordtype">bool</span> __testin = <a class="code" href="a00247.html#a14cdd23152cee458aaa655cf9508f9a6" title="Place to stash in || out || in | out settings for current filebuf.">_M_mode</a> & <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>;
<a name="l00395"></a>00395 <span class="keyword">const</span> <span class="keywordtype">bool</span> __testout = <a class="code" href="a00247.html#a14cdd23152cee458aaa655cf9508f9a6" title="Place to stash in || out || in | out settings for current filebuf.">_M_mode</a> & <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>;
<a name="l00396"></a>00396
<a name="l00397"></a>00397 <span class="keywordflow">if</span> (__testin && __off > 0)
<a name="l00398"></a>00398 this-><a class="code" href="a00252.html#a38c9b562c20b30bf9d21cf0e4dc90356" title="Setting the three read area pointers.">setg</a>(<a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>, <a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>, <a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a> + __off);
<a name="l00399"></a>00399 <span class="keywordflow">else</span>
<a name="l00400"></a>00400 this-><a class="code" href="a00252.html#a38c9b562c20b30bf9d21cf0e4dc90356" title="Setting the three read area pointers.">setg</a>(<a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>, <a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>, <a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>);
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="keywordflow">if</span> (__testout && __off == 0 && <a class="code" href="a00247.html#a59de9f582ce410ea2c7583eaf4228e2f">_M_buf_size</a> > 1 )
<a name="l00403"></a>00403 this-><a class="code" href="a00252.html#ab0f1b49870f87d288a737cd9f8f9ec00" title="Setting the three write area pointers.">setp</a>(<a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a>, <a class="code" href="a00247.html#a981a6d9fa6672d57f94dc2578f3d4b07" title="Pointer to the beginning of internal buffer.">_M_buf</a> + <a class="code" href="a00247.html#a59de9f582ce410ea2c7583eaf4228e2f">_M_buf_size</a> - 1);
<a name="l00404"></a>00404 <span class="keywordflow">else</span>
<a name="l00405"></a>00405 this-><a class="code" href="a00252.html#ab0f1b49870f87d288a737cd9f8f9ec00" title="Setting the three write area pointers.">setp</a>(0, 0);
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407 };
<a name="l00408"></a>00408
<a name="l00409"></a>00409 <span class="comment">// [27.8.1.5] Template class basic_ifstream</span><span class="comment"></span>
<a name="l00410"></a>00410 <span class="comment"> /**</span>
<a name="l00411"></a>00411 <span class="comment"> * @brief Controlling input for files.</span>
<a name="l00412"></a>00412 <span class="comment"> * @ingroup io</span>
<a name="l00413"></a>00413 <span class="comment"> *</span>
<a name="l00414"></a>00414 <span class="comment"> * This class supports reading from named files, using the inherited</span>
<a name="l00415"></a>00415 <span class="comment"> * functions from std::basic_istream. To control the associated</span>
<a name="l00416"></a>00416 <span class="comment"> * sequence, an instance of std::basic_filebuf is used, which this page</span>
<a name="l00417"></a>00417 <span class="comment"> * refers to as @c sb.</span>
<a name="l00418"></a>00418 <span class="comment"> */</span>
<a name="l00419"></a>00419 <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits>
<a name="l00420"></a><a class="code" href="a00396.html">00420</a> <span class="keyword">class </span><a class="code" href="a00396.html" title="Controlling input for files.This class supports reading from named files, using the inherited functio...">basic_ifstream</a> : <span class="keyword">public</span> <a class="code" href="a00250.html" title="Controlling input.This is the base class for all input streams. It provides text formatting of all bu...">basic_istream</a><_CharT, _Traits>
<a name="l00421"></a>00421 {
<a name="l00422"></a>00422 <span class="keyword">public</span>:
<a name="l00423"></a>00423 <span class="comment">// Types:</span>
<a name="l00424"></a><a class="code" href="a00396.html#a8d57b09ffdcdcd9242a854082ab09a0c">00424</a> <span class="keyword">typedef</span> _CharT <a class="code" href="a00396.html#a8d57b09ffdcdcd9242a854082ab09a0c">char_type</a>;
<a name="l00425"></a><a class="code" href="a00396.html#a1dd1fdf47d14d9ae27f90c8cbcbd483b">00425</a> <span class="keyword">typedef</span> _Traits <a class="code" href="a00396.html#a1dd1fdf47d14d9ae27f90c8cbcbd483b">traits_type</a>;
<a name="l00426"></a><a class="code" href="a00396.html#abf038cc0852cb69aed3e70045b4c1935">00426</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type <a class="code" href="a00396.html#abf038cc0852cb69aed3e70045b4c1935">int_type</a>;
<a name="l00427"></a><a class="code" href="a00396.html#af2f1540ec7292c76d446852b45b16460">00427</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type <a class="code" href="a00396.html#af2f1540ec7292c76d446852b45b16460">pos_type</a>;
<a name="l00428"></a><a class="code" href="a00396.html#a5895298856d78cfdc6df6c6035ab2ca4">00428</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type <a class="code" href="a00396.html#a5895298856d78cfdc6df6c6035ab2ca4">off_type</a>;
<a name="l00429"></a>00429
<a name="l00430"></a>00430 <span class="comment">// Non-standard types:</span>
<a name="l00431"></a>00431 <span class="keyword">typedef</span> <a class="code" href="a00247.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a00247.html">__filebuf_type</a>;
<a name="l00432"></a>00432 <span class="keyword">typedef</span> <a class="code" href="a00250.html" title="Controlling input.This is the base class for all input streams. It provides text formatting of all bu...">basic_istream<char_type, traits_type></a> <a class="code" href="a00250.html" title="Controlling input.This is the base class for all input streams. It provides text formatting of all bu...">__istream_type</a>;
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="keyword">private</span>:
<a name="l00435"></a>00435 <a class="code" href="a00247.html">__filebuf_type</a> _M_filebuf;
<a name="l00436"></a>00436
<a name="l00437"></a>00437 <span class="keyword">public</span>:
<a name="l00438"></a>00438 <span class="comment">// Constructors/Destructors:</span><span class="comment"></span>
<a name="l00439"></a>00439 <span class="comment"> /**</span>
<a name="l00440"></a>00440 <span class="comment"> * @brief Default constructor.</span>
<a name="l00441"></a>00441 <span class="comment"> *</span>
<a name="l00442"></a>00442 <span class="comment"> * Initializes @c sb using its default constructor, and passes</span>
<a name="l00443"></a>00443 <span class="comment"> * @c &sb to the base class initializer. Does not open any files</span>
<a name="l00444"></a>00444 <span class="comment"> * (you haven't given it a filename to open).</span>
<a name="l00445"></a>00445 <span class="comment"> */</span>
<a name="l00446"></a><a class="code" href="a00396.html#a0332ea0815cd0f2681780ed3cb482229">00446</a> <a class="code" href="a00396.html#a0332ea0815cd0f2681780ed3cb482229" title="Default constructor.">basic_ifstream</a>() : <a class="code" href="a00250.html" title="Controlling input.This is the base class for all input streams. It provides text formatting of all bu...">__istream_type</a>(), _M_filebuf()
<a name="l00447"></a>00447 { this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf); }
<a name="l00448"></a>00448 <span class="comment"></span>
<a name="l00449"></a>00449 <span class="comment"> /**</span>
<a name="l00450"></a>00450 <span class="comment"> * @brief Create an input file stream.</span>
<a name="l00451"></a>00451 <span class="comment"> * @param s Null terminated string specifying the filename.</span>
<a name="l00452"></a>00452 <span class="comment"> * @param mode Open file in specified mode (see std::ios_base).</span>
<a name="l00453"></a>00453 <span class="comment"> *</span>
<a name="l00454"></a>00454 <span class="comment"> * @c ios_base::in is automatically included in @a mode.</span>
<a name="l00455"></a>00455 <span class="comment"> *</span>
<a name="l00456"></a>00456 <span class="comment"> * Tip: When using std::string to hold the filename, you must use</span>
<a name="l00457"></a>00457 <span class="comment"> * .c_str() before passing it to this constructor.</span>
<a name="l00458"></a>00458 <span class="comment"> */</span>
<a name="l00459"></a>00459 <span class="keyword">explicit</span>
<a name="l00460"></a><a class="code" href="a00396.html#a83516a8e9d1db5ae7d2cf392b23dd840">00460</a> <a class="code" href="a00396.html#a0332ea0815cd0f2681780ed3cb482229" title="Default constructor.">basic_ifstream</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>)
<a name="l00461"></a>00461 : <a class="code" href="a00250.html" title="Controlling input.This is the base class for all input streams. It provides text formatting of all bu...">__istream_type</a>(), _M_filebuf()
<a name="l00462"></a>00462 {
<a name="l00463"></a>00463 this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf);
<a name="l00464"></a>00464 this-><a class="code" href="a00396.html#a642496a04b7adb81e614d2b3903734ff" title="Opens an external file.">open</a>(__s, __mode);
<a name="l00465"></a>00465 }
<a name="l00466"></a>00466
<a name="l00467"></a>00467 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00468"></a>00468 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00469"></a>00469 <span class="comment"> * @brief Create an input file stream.</span>
<a name="l00470"></a>00470 <span class="comment"> * @param s std::string specifying the filename.</span>
<a name="l00471"></a>00471 <span class="comment"> * @param mode Open file in specified mode (see std::ios_base).</span>
<a name="l00472"></a>00472 <span class="comment"> *</span>
<a name="l00473"></a>00473 <span class="comment"> * @c ios_base::in is automatically included in @a mode.</span>
<a name="l00474"></a>00474 <span class="comment"> */</span>
<a name="l00475"></a>00475 <span class="keyword">explicit</span>
<a name="l00476"></a><a class="code" href="a00396.html#ad533b4e5d658fe6563d34b9ef36a9d7a">00476</a> <a class="code" href="a00396.html#a0332ea0815cd0f2681780ed3cb482229" title="Default constructor.">basic_ifstream</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s,
<a name="l00477"></a>00477 ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>)
<a name="l00478"></a>00478 : <a class="code" href="a00250.html" title="Controlling input.This is the base class for all input streams. It provides text formatting of all bu...">__istream_type</a>(), _M_filebuf()
<a name="l00479"></a>00479 {
<a name="l00480"></a>00480 this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf);
<a name="l00481"></a>00481 this-><a class="code" href="a00396.html#a642496a04b7adb81e614d2b3903734ff" title="Opens an external file.">open</a>(__s, __mode);
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483 <span class="preprocessor">#endif</span>
<a name="l00484"></a>00484 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00485"></a>00485 <span class="comment"> /**</span>
<a name="l00486"></a>00486 <span class="comment"> * @brief The destructor does nothing.</span>
<a name="l00487"></a>00487 <span class="comment"> *</span>
<a name="l00488"></a>00488 <span class="comment"> * The file is closed by the filebuf object, not the formatting</span>
<a name="l00489"></a>00489 <span class="comment"> * stream.</span>
<a name="l00490"></a>00490 <span class="comment"> */</span>
<a name="l00491"></a><a class="code" href="a00396.html#a1bb90895f6ee2886b8e2dd9e033d31ad">00491</a> <a class="code" href="a00396.html#a1bb90895f6ee2886b8e2dd9e033d31ad" title="The destructor does nothing.">~basic_ifstream</a>()
<a name="l00492"></a>00492 { }
<a name="l00493"></a>00493
<a name="l00494"></a>00494 <span class="comment">// Members:</span><span class="comment"></span>
<a name="l00495"></a>00495 <span class="comment"> /**</span>
<a name="l00496"></a>00496 <span class="comment"> * @brief Accessing the underlying buffer.</span>
<a name="l00497"></a>00497 <span class="comment"> * @return The current basic_filebuf buffer.</span>
<a name="l00498"></a>00498 <span class="comment"> *</span>
<a name="l00499"></a>00499 <span class="comment"> * This hides both signatures of std::basic_ios::rdbuf().</span>
<a name="l00500"></a>00500 <span class="comment"> */</span>
<a name="l00501"></a>00501 __filebuf_type*
<a name="l00502"></a><a class="code" href="a00396.html#af7b4a32110f3402b89088a01ac9b0081">00502</a> <a class="code" href="a00396.html#af7b4a32110f3402b89088a01ac9b0081" title="Accessing the underlying buffer.">rdbuf</a>()<span class="keyword"> const</span>
<a name="l00503"></a>00503 <span class="keyword"> </span>{ <span class="keywordflow">return</span> <span class="keyword">const_cast<</span><a class="code" href="a00247.html">__filebuf_type</a>*<span class="keyword">></span>(&_M_filebuf); }
<a name="l00504"></a>00504 <span class="comment"></span>
<a name="l00505"></a>00505 <span class="comment"> /**</span>
<a name="l00506"></a>00506 <span class="comment"> * @brief Wrapper to test for an open file.</span>
<a name="l00507"></a>00507 <span class="comment"> * @return @c rdbuf()->is_open()</span>
<a name="l00508"></a>00508 <span class="comment"> */</span>
<a name="l00509"></a>00509 <span class="keywordtype">bool</span>
<a name="l00510"></a><a class="code" href="a00396.html#afcbe0c0931007c7359e16543abe1fe87">00510</a> <a class="code" href="a00396.html#afcbe0c0931007c7359e16543abe1fe87" title="Wrapper to test for an open file.">is_open</a>()
<a name="l00511"></a>00511 { <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>(); }
<a name="l00512"></a>00512
<a name="l00513"></a>00513 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00514"></a>00514 <span class="comment">// 365. Lack of const-qualification in clause 27</span>
<a name="l00515"></a>00515 <span class="keywordtype">bool</span>
<a name="l00516"></a>00516 <a class="code" href="a00396.html#afcbe0c0931007c7359e16543abe1fe87" title="Wrapper to test for an open file.">is_open</a>()<span class="keyword"> const</span>
<a name="l00517"></a>00517 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>(); }
<a name="l00518"></a>00518 <span class="comment"></span>
<a name="l00519"></a>00519 <span class="comment"> /**</span>
<a name="l00520"></a>00520 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00521"></a>00521 <span class="comment"> * @param s The name of the file.</span>
<a name="l00522"></a>00522 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00523"></a>00523 <span class="comment"> *</span>
<a name="l00524"></a>00524 <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode|in). If that function</span>
<a name="l00525"></a>00525 <span class="comment"> * fails, @c failbit is set in the stream's error state.</span>
<a name="l00526"></a>00526 <span class="comment"> *</span>
<a name="l00527"></a>00527 <span class="comment"> * Tip: When using std::string to hold the filename, you must use</span>
<a name="l00528"></a>00528 <span class="comment"> * .c_str() before passing it to this constructor.</span>
<a name="l00529"></a>00529 <span class="comment"> */</span>
<a name="l00530"></a>00530 <span class="keywordtype">void</span>
<a name="l00531"></a><a class="code" href="a00396.html#a642496a04b7adb81e614d2b3903734ff">00531</a> <a class="code" href="a00396.html#a642496a04b7adb81e614d2b3903734ff" title="Opens an external file.">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s, ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>)
<a name="l00532"></a>00532 {
<a name="l00533"></a>00533 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(__s, __mode | <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>))
<a name="l00534"></a>00534 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00535"></a>00535 <span class="keywordflow">else</span>
<a name="l00536"></a>00536 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00537"></a>00537 <span class="comment">// 409. Closing an fstream should clear error state</span>
<a name="l00538"></a>00538 this-><a class="code" href="a00248.html#a07a10e07246ef2a68c0c3f08d94c7607" title="[Re]sets the error state.">clear</a>();
<a name="l00539"></a>00539 }
<a name="l00540"></a>00540
<a name="l00541"></a>00541 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00542"></a>00542 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00543"></a>00543 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00544"></a>00544 <span class="comment"> * @param s The name of the file.</span>
<a name="l00545"></a>00545 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00546"></a>00546 <span class="comment"> *</span>
<a name="l00547"></a>00547 <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode|in). If that function</span>
<a name="l00548"></a>00548 <span class="comment"> * fails, @c failbit is set in the stream's error state.</span>
<a name="l00549"></a>00549 <span class="comment"> */</span>
<a name="l00550"></a>00550 <span class="keywordtype">void</span>
<a name="l00551"></a><a class="code" href="a00396.html#ab7c7c2bf6e27152bb0460c83c32ab431">00551</a> <a class="code" href="a00396.html#a642496a04b7adb81e614d2b3903734ff" title="Opens an external file.">open</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s, ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>)
<a name="l00552"></a>00552 {
<a name="l00553"></a>00553 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(__s, __mode | <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a>))
<a name="l00554"></a>00554 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00555"></a>00555 <span class="keywordflow">else</span>
<a name="l00556"></a>00556 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00557"></a>00557 <span class="comment">// 409. Closing an fstream should clear error state</span>
<a name="l00558"></a>00558 this-><a class="code" href="a00248.html#a07a10e07246ef2a68c0c3f08d94c7607" title="[Re]sets the error state.">clear</a>();
<a name="l00559"></a>00559 }
<a name="l00560"></a>00560 <span class="preprocessor">#endif</span>
<a name="l00561"></a>00561 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00562"></a>00562 <span class="comment"> /**</span>
<a name="l00563"></a>00563 <span class="comment"> * @brief Close the file.</span>
<a name="l00564"></a>00564 <span class="comment"> *</span>
<a name="l00565"></a>00565 <span class="comment"> * Calls @c std::basic_filebuf::close(). If that function</span>
<a name="l00566"></a>00566 <span class="comment"> * fails, @c failbit is set in the stream's error state.</span>
<a name="l00567"></a>00567 <span class="comment"> */</span>
<a name="l00568"></a>00568 <span class="keywordtype">void</span>
<a name="l00569"></a><a class="code" href="a00396.html#adca6a6b93f9f3ae1c9393213caa37a9a">00569</a> <a class="code" href="a00396.html#adca6a6b93f9f3ae1c9393213caa37a9a" title="Close the file.">close</a>()
<a name="l00570"></a>00570 {
<a name="l00571"></a>00571 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#a5e13a128abb0a5dd8ef1e3d10597031f" title="Closes the currently associated file.">close</a>())
<a name="l00572"></a>00572 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00573"></a>00573 }
<a name="l00574"></a>00574 };
<a name="l00575"></a>00575
<a name="l00576"></a>00576
<a name="l00577"></a>00577 <span class="comment">// [27.8.1.8] Template class basic_ofstream</span><span class="comment"></span>
<a name="l00578"></a>00578 <span class="comment"> /**</span>
<a name="l00579"></a>00579 <span class="comment"> * @brief Controlling output for files.</span>
<a name="l00580"></a>00580 <span class="comment"> * @ingroup io</span>
<a name="l00581"></a>00581 <span class="comment"> *</span>
<a name="l00582"></a>00582 <span class="comment"> * This class supports reading from named files, using the inherited</span>
<a name="l00583"></a>00583 <span class="comment"> * functions from std::basic_ostream. To control the associated</span>
<a name="l00584"></a>00584 <span class="comment"> * sequence, an instance of std::basic_filebuf is used, which this page</span>
<a name="l00585"></a>00585 <span class="comment"> * refers to as @c sb.</span>
<a name="l00586"></a>00586 <span class="comment"> */</span>
<a name="l00587"></a>00587 <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits>
<a name="l00588"></a><a class="code" href="a00399.html">00588</a> <span class="keyword">class </span><a class="code" href="a00399.html" title="Controlling output for files.This class supports reading from named files, using the inherited functi...">basic_ofstream</a> : <span class="keyword">public</span> <a class="code" href="a00251.html" title="Controlling output.This is the base class for all output streams. It provides text formatting of all ...">basic_ostream</a><_CharT,_Traits>
<a name="l00589"></a>00589 {
<a name="l00590"></a>00590 <span class="keyword">public</span>:
<a name="l00591"></a>00591 <span class="comment">// Types:</span>
<a name="l00592"></a><a class="code" href="a00399.html#a86820950e19b95f456b9afe756dbe82a">00592</a> <span class="keyword">typedef</span> _CharT <a class="code" href="a00399.html#a86820950e19b95f456b9afe756dbe82a">char_type</a>;
<a name="l00593"></a><a class="code" href="a00399.html#a7b056cc3f9446d416f364a5d1f9f11a2">00593</a> <span class="keyword">typedef</span> _Traits <a class="code" href="a00399.html#a7b056cc3f9446d416f364a5d1f9f11a2">traits_type</a>;
<a name="l00594"></a><a class="code" href="a00399.html#afb56523dd01743305634ca9e1fb4d6f4">00594</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type <a class="code" href="a00399.html#afb56523dd01743305634ca9e1fb4d6f4">int_type</a>;
<a name="l00595"></a><a class="code" href="a00399.html#a7751e76b6c19d9a37287ea805d312b20">00595</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type <a class="code" href="a00399.html#a7751e76b6c19d9a37287ea805d312b20">pos_type</a>;
<a name="l00596"></a><a class="code" href="a00399.html#aa93fadcb53aea7867a1c79a8b3a57d83">00596</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type <a class="code" href="a00399.html#aa93fadcb53aea7867a1c79a8b3a57d83">off_type</a>;
<a name="l00597"></a>00597
<a name="l00598"></a>00598 <span class="comment">// Non-standard types:</span>
<a name="l00599"></a>00599 <span class="keyword">typedef</span> <a class="code" href="a00247.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a00247.html">__filebuf_type</a>;
<a name="l00600"></a>00600 <span class="keyword">typedef</span> <a class="code" href="a00251.html" title="Controlling output.This is the base class for all output streams. It provides text formatting of all ...">basic_ostream<char_type, traits_type></a> <a class="code" href="a00251.html" title="Controlling output.This is the base class for all output streams. It provides text formatting of all ...">__ostream_type</a>;
<a name="l00601"></a>00601
<a name="l00602"></a>00602 <span class="keyword">private</span>:
<a name="l00603"></a>00603 <a class="code" href="a00247.html">__filebuf_type</a> _M_filebuf;
<a name="l00604"></a>00604
<a name="l00605"></a>00605 <span class="keyword">public</span>:
<a name="l00606"></a>00606 <span class="comment">// Constructors:</span><span class="comment"></span>
<a name="l00607"></a>00607 <span class="comment"> /**</span>
<a name="l00608"></a>00608 <span class="comment"> * @brief Default constructor.</span>
<a name="l00609"></a>00609 <span class="comment"> *</span>
<a name="l00610"></a>00610 <span class="comment"> * Initializes @c sb using its default constructor, and passes</span>
<a name="l00611"></a>00611 <span class="comment"> * @c &sb to the base class initializer. Does not open any files</span>
<a name="l00612"></a>00612 <span class="comment"> * (you haven't given it a filename to open).</span>
<a name="l00613"></a>00613 <span class="comment"> */</span>
<a name="l00614"></a><a class="code" href="a00399.html#a19f5b05d46380f7866b1212413d6c046">00614</a> <a class="code" href="a00399.html#a19f5b05d46380f7866b1212413d6c046" title="Default constructor.">basic_ofstream</a>(): <a class="code" href="a00251.html" title="Controlling output.This is the base class for all output streams. It provides text formatting of all ...">__ostream_type</a>(), _M_filebuf()
<a name="l00615"></a>00615 { this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf); }
<a name="l00616"></a>00616 <span class="comment"></span>
<a name="l00617"></a>00617 <span class="comment"> /**</span>
<a name="l00618"></a>00618 <span class="comment"> * @brief Create an output file stream.</span>
<a name="l00619"></a>00619 <span class="comment"> * @param s Null terminated string specifying the filename.</span>
<a name="l00620"></a>00620 <span class="comment"> * @param mode Open file in specified mode (see std::ios_base).</span>
<a name="l00621"></a>00621 <span class="comment"> *</span>
<a name="l00622"></a>00622 <span class="comment"> * @c ios_base::out|ios_base::trunc is automatically included in</span>
<a name="l00623"></a>00623 <span class="comment"> * @a mode.</span>
<a name="l00624"></a>00624 <span class="comment"> *</span>
<a name="l00625"></a>00625 <span class="comment"> * Tip: When using std::string to hold the filename, you must use</span>
<a name="l00626"></a>00626 <span class="comment"> * .c_str() before passing it to this constructor.</span>
<a name="l00627"></a>00627 <span class="comment"> */</span>
<a name="l00628"></a>00628 <span class="keyword">explicit</span>
<a name="l00629"></a><a class="code" href="a00399.html#a2bf63411d3f6ad329a837087701a4018">00629</a> <a class="code" href="a00399.html#a19f5b05d46380f7866b1212413d6c046" title="Default constructor.">basic_ofstream</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,
<a name="l00630"></a>00630 ios_base::openmode __mode = <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>|<a class="code" href="a00528.html#ae6831a611ce41b51a873c55b30d8534d" title="Open for input. Default for ofstream.">ios_base::trunc</a>)
<a name="l00631"></a>00631 : <a class="code" href="a00251.html" title="Controlling output.This is the base class for all output streams. It provides text formatting of all ...">__ostream_type</a>(), _M_filebuf()
<a name="l00632"></a>00632 {
<a name="l00633"></a>00633 this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf);
<a name="l00634"></a>00634 this-><a class="code" href="a00399.html#abcbb3eccaaffd41fbe4e5ed746508906" title="Opens an external file.">open</a>(__s, __mode);
<a name="l00635"></a>00635 }
<a name="l00636"></a>00636
<a name="l00637"></a>00637 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00638"></a>00638 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00639"></a>00639 <span class="comment"> * @brief Create an output file stream.</span>
<a name="l00640"></a>00640 <span class="comment"> * @param s std::string specifying the filename.</span>
<a name="l00641"></a>00641 <span class="comment"> * @param mode Open file in specified mode (see std::ios_base).</span>
<a name="l00642"></a>00642 <span class="comment"> *</span>
<a name="l00643"></a>00643 <span class="comment"> * @c ios_base::out|ios_base::trunc is automatically included in</span>
<a name="l00644"></a>00644 <span class="comment"> * @a mode.</span>
<a name="l00645"></a>00645 <span class="comment"> */</span>
<a name="l00646"></a>00646 <span class="keyword">explicit</span>
<a name="l00647"></a><a class="code" href="a00399.html#ae8e5ba5ea1db17f8680f5e2d8466a4cc">00647</a> <a class="code" href="a00399.html#a19f5b05d46380f7866b1212413d6c046" title="Default constructor.">basic_ofstream</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s,
<a name="l00648"></a>00648 ios_base::openmode __mode = <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>|<a class="code" href="a00528.html#ae6831a611ce41b51a873c55b30d8534d" title="Open for input. Default for ofstream.">ios_base::trunc</a>)
<a name="l00649"></a>00649 : <a class="code" href="a00251.html" title="Controlling output.This is the base class for all output streams. It provides text formatting of all ...">__ostream_type</a>(), _M_filebuf()
<a name="l00650"></a>00650 {
<a name="l00651"></a>00651 this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf);
<a name="l00652"></a>00652 this-><a class="code" href="a00399.html#abcbb3eccaaffd41fbe4e5ed746508906" title="Opens an external file.">open</a>(__s, __mode);
<a name="l00653"></a>00653 }
<a name="l00654"></a>00654 <span class="preprocessor">#endif</span>
<a name="l00655"></a>00655 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00656"></a>00656 <span class="comment"> /**</span>
<a name="l00657"></a>00657 <span class="comment"> * @brief The destructor does nothing.</span>
<a name="l00658"></a>00658 <span class="comment"> *</span>
<a name="l00659"></a>00659 <span class="comment"> * The file is closed by the filebuf object, not the formatting</span>
<a name="l00660"></a>00660 <span class="comment"> * stream.</span>
<a name="l00661"></a>00661 <span class="comment"> */</span>
<a name="l00662"></a><a class="code" href="a00399.html#ab140145d0cd1f4754cd4812a31760f58">00662</a> <a class="code" href="a00399.html#ab140145d0cd1f4754cd4812a31760f58" title="The destructor does nothing.">~basic_ofstream</a>()
<a name="l00663"></a>00663 { }
<a name="l00664"></a>00664
<a name="l00665"></a>00665 <span class="comment">// Members:</span><span class="comment"></span>
<a name="l00666"></a>00666 <span class="comment"> /**</span>
<a name="l00667"></a>00667 <span class="comment"> * @brief Accessing the underlying buffer.</span>
<a name="l00668"></a>00668 <span class="comment"> * @return The current basic_filebuf buffer.</span>
<a name="l00669"></a>00669 <span class="comment"> *</span>
<a name="l00670"></a>00670 <span class="comment"> * This hides both signatures of std::basic_ios::rdbuf().</span>
<a name="l00671"></a>00671 <span class="comment"> */</span>
<a name="l00672"></a>00672 __filebuf_type*
<a name="l00673"></a><a class="code" href="a00399.html#a9f932f8706520f03ad8432fa0db81e22">00673</a> <a class="code" href="a00399.html#a9f932f8706520f03ad8432fa0db81e22" title="Accessing the underlying buffer.">rdbuf</a>()<span class="keyword"> const</span>
<a name="l00674"></a>00674 <span class="keyword"> </span>{ <span class="keywordflow">return</span> <span class="keyword">const_cast<</span><a class="code" href="a00247.html">__filebuf_type</a>*<span class="keyword">></span>(&_M_filebuf); }
<a name="l00675"></a>00675 <span class="comment"></span>
<a name="l00676"></a>00676 <span class="comment"> /**</span>
<a name="l00677"></a>00677 <span class="comment"> * @brief Wrapper to test for an open file.</span>
<a name="l00678"></a>00678 <span class="comment"> * @return @c rdbuf()->is_open()</span>
<a name="l00679"></a>00679 <span class="comment"> */</span>
<a name="l00680"></a>00680 <span class="keywordtype">bool</span>
<a name="l00681"></a><a class="code" href="a00399.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414">00681</a> <a class="code" href="a00399.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414" title="Wrapper to test for an open file.">is_open</a>()
<a name="l00682"></a>00682 { <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>(); }
<a name="l00683"></a>00683
<a name="l00684"></a>00684 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00685"></a>00685 <span class="comment">// 365. Lack of const-qualification in clause 27</span>
<a name="l00686"></a>00686 <span class="keywordtype">bool</span>
<a name="l00687"></a>00687 <a class="code" href="a00399.html#aef0ea13a6d1c1bc6ee4f1ebc71e18414" title="Wrapper to test for an open file.">is_open</a>()<span class="keyword"> const</span>
<a name="l00688"></a>00688 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>(); }
<a name="l00689"></a>00689 <span class="comment"></span>
<a name="l00690"></a>00690 <span class="comment"> /**</span>
<a name="l00691"></a>00691 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00692"></a>00692 <span class="comment"> * @param s The name of the file.</span>
<a name="l00693"></a>00693 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00694"></a>00694 <span class="comment"> *</span>
<a name="l00695"></a>00695 <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode|out|trunc). If that</span>
<a name="l00696"></a>00696 <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span>
<a name="l00697"></a>00697 <span class="comment"> *</span>
<a name="l00698"></a>00698 <span class="comment"> * Tip: When using std::string to hold the filename, you must use</span>
<a name="l00699"></a>00699 <span class="comment"> * .c_str() before passing it to this constructor.</span>
<a name="l00700"></a>00700 <span class="comment"> */</span>
<a name="l00701"></a>00701 <span class="keywordtype">void</span>
<a name="l00702"></a><a class="code" href="a00399.html#abcbb3eccaaffd41fbe4e5ed746508906">00702</a> <a class="code" href="a00399.html#abcbb3eccaaffd41fbe4e5ed746508906" title="Opens an external file.">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,
<a name="l00703"></a>00703 ios_base::openmode __mode = <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a> | <a class="code" href="a00528.html#ae6831a611ce41b51a873c55b30d8534d" title="Open for input. Default for ofstream.">ios_base::trunc</a>)
<a name="l00704"></a>00704 {
<a name="l00705"></a>00705 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(__s, __mode | <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>))
<a name="l00706"></a>00706 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00707"></a>00707 <span class="keywordflow">else</span>
<a name="l00708"></a>00708 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00709"></a>00709 <span class="comment">// 409. Closing an fstream should clear error state</span>
<a name="l00710"></a>00710 this-><a class="code" href="a00248.html#a07a10e07246ef2a68c0c3f08d94c7607" title="[Re]sets the error state.">clear</a>();
<a name="l00711"></a>00711 }
<a name="l00712"></a>00712
<a name="l00713"></a>00713 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00714"></a>00714 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00715"></a>00715 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00716"></a>00716 <span class="comment"> * @param s The name of the file.</span>
<a name="l00717"></a>00717 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00718"></a>00718 <span class="comment"> *</span>
<a name="l00719"></a>00719 <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode|out|trunc). If that</span>
<a name="l00720"></a>00720 <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span>
<a name="l00721"></a>00721 <span class="comment"> */</span>
<a name="l00722"></a>00722 <span class="keywordtype">void</span>
<a name="l00723"></a><a class="code" href="a00399.html#aac7913b287232e0f3c05ca131bad15d1">00723</a> <a class="code" href="a00399.html#abcbb3eccaaffd41fbe4e5ed746508906" title="Opens an external file.">open</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s,
<a name="l00724"></a>00724 ios_base::openmode __mode = <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a> | <a class="code" href="a00528.html#ae6831a611ce41b51a873c55b30d8534d" title="Open for input. Default for ofstream.">ios_base::trunc</a>)
<a name="l00725"></a>00725 {
<a name="l00726"></a>00726 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(__s, __mode | <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>))
<a name="l00727"></a>00727 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00728"></a>00728 <span class="keywordflow">else</span>
<a name="l00729"></a>00729 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00730"></a>00730 <span class="comment">// 409. Closing an fstream should clear error state</span>
<a name="l00731"></a>00731 this-><a class="code" href="a00248.html#a07a10e07246ef2a68c0c3f08d94c7607" title="[Re]sets the error state.">clear</a>();
<a name="l00732"></a>00732 }
<a name="l00733"></a>00733 <span class="preprocessor">#endif</span>
<a name="l00734"></a>00734 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00735"></a>00735 <span class="comment"> /**</span>
<a name="l00736"></a>00736 <span class="comment"> * @brief Close the file.</span>
<a name="l00737"></a>00737 <span class="comment"> *</span>
<a name="l00738"></a>00738 <span class="comment"> * Calls @c std::basic_filebuf::close(). If that function</span>
<a name="l00739"></a>00739 <span class="comment"> * fails, @c failbit is set in the stream's error state.</span>
<a name="l00740"></a>00740 <span class="comment"> */</span>
<a name="l00741"></a>00741 <span class="keywordtype">void</span>
<a name="l00742"></a><a class="code" href="a00399.html#a63e51ce67bbd3eee66b04851100a8a52">00742</a> <a class="code" href="a00399.html#a63e51ce67bbd3eee66b04851100a8a52" title="Close the file.">close</a>()
<a name="l00743"></a>00743 {
<a name="l00744"></a>00744 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#a5e13a128abb0a5dd8ef1e3d10597031f" title="Closes the currently associated file.">close</a>())
<a name="l00745"></a>00745 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00746"></a>00746 }
<a name="l00747"></a>00747 };
<a name="l00748"></a>00748
<a name="l00749"></a>00749
<a name="l00750"></a>00750 <span class="comment">// [27.8.1.11] Template class basic_fstream</span><span class="comment"></span>
<a name="l00751"></a>00751 <span class="comment"> /**</span>
<a name="l00752"></a>00752 <span class="comment"> * @brief Controlling input and output for files.</span>
<a name="l00753"></a>00753 <span class="comment"> * @ingroup io</span>
<a name="l00754"></a>00754 <span class="comment"> *</span>
<a name="l00755"></a>00755 <span class="comment"> * This class supports reading from and writing to named files, using</span>
<a name="l00756"></a>00756 <span class="comment"> * the inherited functions from std::basic_iostream. To control the</span>
<a name="l00757"></a>00757 <span class="comment"> * associated sequence, an instance of std::basic_filebuf is used, which</span>
<a name="l00758"></a>00758 <span class="comment"> * this page refers to as @c sb.</span>
<a name="l00759"></a>00759 <span class="comment"> */</span>
<a name="l00760"></a>00760 <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits>
<a name="l00761"></a><a class="code" href="a00395.html">00761</a> <span class="keyword">class </span><a class="code" href="a00395.html" title="Controlling input and output for files.This class supports reading from and writing to named files...">basic_fstream</a> : <span class="keyword">public</span> <a class="code" href="a00249.html" title="Merging istream and ostream capabilities.This class multiply inherits from the input and output strea...">basic_iostream</a><_CharT, _Traits>
<a name="l00762"></a>00762 {
<a name="l00763"></a>00763 <span class="keyword">public</span>:
<a name="l00764"></a>00764 <span class="comment">// Types:</span>
<a name="l00765"></a><a class="code" href="a00395.html#a999ec3c5cb659ddb9fa46a0350af4f8e">00765</a> <span class="keyword">typedef</span> _CharT <a class="code" href="a00395.html#a999ec3c5cb659ddb9fa46a0350af4f8e">char_type</a>;
<a name="l00766"></a><a class="code" href="a00395.html#a193efdd2f56402d23561266bafd52328">00766</a> <span class="keyword">typedef</span> _Traits <a class="code" href="a00395.html#a193efdd2f56402d23561266bafd52328">traits_type</a>;
<a name="l00767"></a><a class="code" href="a00395.html#aec3ee93ab65a90f4d156af0a4facce8d">00767</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::int_type <a class="code" href="a00395.html#aec3ee93ab65a90f4d156af0a4facce8d">int_type</a>;
<a name="l00768"></a><a class="code" href="a00395.html#aa22eb88aa7ce13fdb4d4a47d1788fc49">00768</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::pos_type <a class="code" href="a00395.html#aa22eb88aa7ce13fdb4d4a47d1788fc49">pos_type</a>;
<a name="l00769"></a><a class="code" href="a00395.html#a8ceceed3d0d712e825fee1bbadaca3e7">00769</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> traits_type::off_type <a class="code" href="a00395.html#a8ceceed3d0d712e825fee1bbadaca3e7">off_type</a>;
<a name="l00770"></a>00770
<a name="l00771"></a>00771 <span class="comment">// Non-standard types:</span>
<a name="l00772"></a>00772 <span class="keyword">typedef</span> <a class="code" href="a00247.html">basic_filebuf<char_type, traits_type></a> <a class="code" href="a00247.html">__filebuf_type</a>;
<a name="l00773"></a>00773 <span class="keyword">typedef</span> <a class="code" href="a00248.html" title="Virtual base class for all stream classes.Most of the member functions called dispatched on stream ob...">basic_ios<char_type, traits_type></a> <a class="code" href="a00248.html" title="Virtual base class for all stream classes.Most of the member functions called dispatched on stream ob...">__ios_type</a>;
<a name="l00774"></a>00774 <span class="keyword">typedef</span> <a class="code" href="a00249.html" title="Merging istream and ostream capabilities.This class multiply inherits from the input and output strea...">basic_iostream<char_type, traits_type></a> <a class="code" href="a00249.html" title="Merging istream and ostream capabilities.This class multiply inherits from the input and output strea...">__iostream_type</a>;
<a name="l00775"></a>00775
<a name="l00776"></a>00776 <span class="keyword">private</span>:
<a name="l00777"></a>00777 <a class="code" href="a00247.html">__filebuf_type</a> _M_filebuf;
<a name="l00778"></a>00778
<a name="l00779"></a>00779 <span class="keyword">public</span>:
<a name="l00780"></a>00780 <span class="comment">// Constructors/destructor:</span><span class="comment"></span>
<a name="l00781"></a>00781 <span class="comment"> /**</span>
<a name="l00782"></a>00782 <span class="comment"> * @brief Default constructor.</span>
<a name="l00783"></a>00783 <span class="comment"> *</span>
<a name="l00784"></a>00784 <span class="comment"> * Initializes @c sb using its default constructor, and passes</span>
<a name="l00785"></a>00785 <span class="comment"> * @c &sb to the base class initializer. Does not open any files</span>
<a name="l00786"></a>00786 <span class="comment"> * (you haven't given it a filename to open).</span>
<a name="l00787"></a>00787 <span class="comment"> */</span>
<a name="l00788"></a><a class="code" href="a00395.html#aed77d792895951c0c0ca8d6b689a6f3e">00788</a> <a class="code" href="a00395.html#aed77d792895951c0c0ca8d6b689a6f3e" title="Default constructor.">basic_fstream</a>()
<a name="l00789"></a>00789 : <a class="code" href="a00249.html" title="Merging istream and ostream capabilities.This class multiply inherits from the input and output strea...">__iostream_type</a>(), _M_filebuf()
<a name="l00790"></a>00790 { this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf); }
<a name="l00791"></a>00791 <span class="comment"></span>
<a name="l00792"></a>00792 <span class="comment"> /**</span>
<a name="l00793"></a>00793 <span class="comment"> * @brief Create an input/output file stream.</span>
<a name="l00794"></a>00794 <span class="comment"> * @param s Null terminated string specifying the filename.</span>
<a name="l00795"></a>00795 <span class="comment"> * @param mode Open file in specified mode (see std::ios_base).</span>
<a name="l00796"></a>00796 <span class="comment"> *</span>
<a name="l00797"></a>00797 <span class="comment"> * Tip: When using std::string to hold the filename, you must use</span>
<a name="l00798"></a>00798 <span class="comment"> * .c_str() before passing it to this constructor.</span>
<a name="l00799"></a>00799 <span class="comment"> */</span>
<a name="l00800"></a>00800 <span class="keyword">explicit</span>
<a name="l00801"></a><a class="code" href="a00395.html#ae15d72ac8176fa8086d0d0a46c9a047c">00801</a> <a class="code" href="a00395.html#aed77d792895951c0c0ca8d6b689a6f3e" title="Default constructor.">basic_fstream</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,
<a name="l00802"></a>00802 ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a> | <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>)
<a name="l00803"></a>00803 : <a class="code" href="a00249.html" title="Merging istream and ostream capabilities.This class multiply inherits from the input and output strea...">__iostream_type</a>(0), _M_filebuf()
<a name="l00804"></a>00804 {
<a name="l00805"></a>00805 this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf);
<a name="l00806"></a>00806 this-><a class="code" href="a00395.html#a3a4c04e09a683bc30e9c5c19bdbbcda4" title="Opens an external file.">open</a>(__s, __mode);
<a name="l00807"></a>00807 }
<a name="l00808"></a>00808
<a name="l00809"></a>00809 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00810"></a>00810 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00811"></a>00811 <span class="comment"> * @brief Create an input/output file stream.</span>
<a name="l00812"></a>00812 <span class="comment"> * @param s Null terminated string specifying the filename.</span>
<a name="l00813"></a>00813 <span class="comment"> * @param mode Open file in specified mode (see std::ios_base).</span>
<a name="l00814"></a>00814 <span class="comment"> */</span>
<a name="l00815"></a>00815 <span class="keyword">explicit</span>
<a name="l00816"></a><a class="code" href="a00395.html#a403175b364bfae6f18b01aea8bd309e2">00816</a> <a class="code" href="a00395.html#aed77d792895951c0c0ca8d6b689a6f3e" title="Default constructor.">basic_fstream</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s,
<a name="l00817"></a>00817 ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a> | <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>)
<a name="l00818"></a>00818 : <a class="code" href="a00249.html" title="Merging istream and ostream capabilities.This class multiply inherits from the input and output strea...">__iostream_type</a>(0), _M_filebuf()
<a name="l00819"></a>00819 {
<a name="l00820"></a>00820 this-><a class="code" href="a00248.html#a62a4b454cbedd686b89e48fa9d6160c4" title="All setup is performed here.">init</a>(&_M_filebuf);
<a name="l00821"></a>00821 this-><a class="code" href="a00395.html#a3a4c04e09a683bc30e9c5c19bdbbcda4" title="Opens an external file.">open</a>(__s, __mode);
<a name="l00822"></a>00822 }
<a name="l00823"></a>00823 <span class="preprocessor">#endif</span>
<a name="l00824"></a>00824 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00825"></a>00825 <span class="comment"> /**</span>
<a name="l00826"></a>00826 <span class="comment"> * @brief The destructor does nothing.</span>
<a name="l00827"></a>00827 <span class="comment"> *</span>
<a name="l00828"></a>00828 <span class="comment"> * The file is closed by the filebuf object, not the formatting</span>
<a name="l00829"></a>00829 <span class="comment"> * stream.</span>
<a name="l00830"></a>00830 <span class="comment"> */</span>
<a name="l00831"></a><a class="code" href="a00395.html#a1b850171ae0a0603138763e98253773b">00831</a> <a class="code" href="a00395.html#a1b850171ae0a0603138763e98253773b" title="The destructor does nothing.">~basic_fstream</a>()
<a name="l00832"></a>00832 { }
<a name="l00833"></a>00833
<a name="l00834"></a>00834 <span class="comment">// Members:</span><span class="comment"></span>
<a name="l00835"></a>00835 <span class="comment"> /**</span>
<a name="l00836"></a>00836 <span class="comment"> * @brief Accessing the underlying buffer.</span>
<a name="l00837"></a>00837 <span class="comment"> * @return The current basic_filebuf buffer.</span>
<a name="l00838"></a>00838 <span class="comment"> *</span>
<a name="l00839"></a>00839 <span class="comment"> * This hides both signatures of std::basic_ios::rdbuf().</span>
<a name="l00840"></a>00840 <span class="comment"> */</span>
<a name="l00841"></a>00841 __filebuf_type*
<a name="l00842"></a><a class="code" href="a00395.html#a4aef7c1c6ab2421b3be17f40108ad084">00842</a> <a class="code" href="a00395.html#a4aef7c1c6ab2421b3be17f40108ad084" title="Accessing the underlying buffer.">rdbuf</a>()<span class="keyword"> const</span>
<a name="l00843"></a>00843 <span class="keyword"> </span>{ <span class="keywordflow">return</span> <span class="keyword">const_cast<</span><a class="code" href="a00247.html">__filebuf_type</a>*<span class="keyword">></span>(&_M_filebuf); }
<a name="l00844"></a>00844 <span class="comment"></span>
<a name="l00845"></a>00845 <span class="comment"> /**</span>
<a name="l00846"></a>00846 <span class="comment"> * @brief Wrapper to test for an open file.</span>
<a name="l00847"></a>00847 <span class="comment"> * @return @c rdbuf()->is_open()</span>
<a name="l00848"></a>00848 <span class="comment"> */</span>
<a name="l00849"></a>00849 <span class="keywordtype">bool</span>
<a name="l00850"></a><a class="code" href="a00395.html#a715c50358129e80ce7a37ee157c141a7">00850</a> <a class="code" href="a00395.html#a715c50358129e80ce7a37ee157c141a7" title="Wrapper to test for an open file.">is_open</a>()
<a name="l00851"></a>00851 { <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>(); }
<a name="l00852"></a>00852
<a name="l00853"></a>00853 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00854"></a>00854 <span class="comment">// 365. Lack of const-qualification in clause 27</span>
<a name="l00855"></a>00855 <span class="keywordtype">bool</span>
<a name="l00856"></a>00856 <a class="code" href="a00395.html#a715c50358129e80ce7a37ee157c141a7" title="Wrapper to test for an open file.">is_open</a>()<span class="keyword"> const</span>
<a name="l00857"></a>00857 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_filebuf.<a class="code" href="a00247.html#aa68144da7ed8779bc0f50af4536cf9bc" title="Returns true if the external file is open.">is_open</a>(); }
<a name="l00858"></a>00858 <span class="comment"></span>
<a name="l00859"></a>00859 <span class="comment"> /**</span>
<a name="l00860"></a>00860 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00861"></a>00861 <span class="comment"> * @param s The name of the file.</span>
<a name="l00862"></a>00862 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00863"></a>00863 <span class="comment"> *</span>
<a name="l00864"></a>00864 <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode). If that</span>
<a name="l00865"></a>00865 <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span>
<a name="l00866"></a>00866 <span class="comment"> *</span>
<a name="l00867"></a>00867 <span class="comment"> * Tip: When using std::string to hold the filename, you must use</span>
<a name="l00868"></a>00868 <span class="comment"> * .c_str() before passing it to this constructor.</span>
<a name="l00869"></a>00869 <span class="comment"> */</span>
<a name="l00870"></a>00870 <span class="keywordtype">void</span>
<a name="l00871"></a><a class="code" href="a00395.html#a3a4c04e09a683bc30e9c5c19bdbbcda4">00871</a> <a class="code" href="a00395.html#a3a4c04e09a683bc30e9c5c19bdbbcda4" title="Opens an external file.">open</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __s,
<a name="l00872"></a>00872 ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a> | <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>)
<a name="l00873"></a>00873 {
<a name="l00874"></a>00874 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(__s, __mode))
<a name="l00875"></a>00875 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00876"></a>00876 <span class="keywordflow">else</span>
<a name="l00877"></a>00877 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00878"></a>00878 <span class="comment">// 409. Closing an fstream should clear error state</span>
<a name="l00879"></a>00879 this-><a class="code" href="a00248.html#a07a10e07246ef2a68c0c3f08d94c7607" title="[Re]sets the error state.">clear</a>();
<a name="l00880"></a>00880 }
<a name="l00881"></a>00881
<a name="l00882"></a>00882 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00883"></a>00883 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00884"></a>00884 <span class="comment"> * @brief Opens an external file.</span>
<a name="l00885"></a>00885 <span class="comment"> * @param s The name of the file.</span>
<a name="l00886"></a>00886 <span class="comment"> * @param mode The open mode flags.</span>
<a name="l00887"></a>00887 <span class="comment"> *</span>
<a name="l00888"></a>00888 <span class="comment"> * Calls @c std::basic_filebuf::open(s,mode). If that</span>
<a name="l00889"></a>00889 <span class="comment"> * function fails, @c failbit is set in the stream's error state.</span>
<a name="l00890"></a>00890 <span class="comment"> */</span>
<a name="l00891"></a>00891 <span class="keywordtype">void</span>
<a name="l00892"></a><a class="code" href="a00395.html#a4e3a98b2a30cf6f0e3eaff8eeb9eee47">00892</a> <a class="code" href="a00395.html#a3a4c04e09a683bc30e9c5c19bdbbcda4" title="Opens an external file.">open</a>(<span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>& __s,
<a name="l00893"></a>00893 ios_base::openmode __mode = <a class="code" href="a00528.html#a652e2323949eea3d906e1c81bd8ce8f7" title="Open for input. Default for ifstream and fstream.">ios_base::in</a> | <a class="code" href="a00528.html#a7187e216e5d16ec820ea1791002f85e0" title="Open for output. Default for ofstream and fstream.">ios_base::out</a>)
<a name="l00894"></a>00894 {
<a name="l00895"></a>00895 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#ad72dc61561f4420b36f9e626b4426433" title="Opens an external file.">open</a>(__s, __mode))
<a name="l00896"></a>00896 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00897"></a>00897 <span class="keywordflow">else</span>
<a name="l00898"></a>00898 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00899"></a>00899 <span class="comment">// 409. Closing an fstream should clear error state</span>
<a name="l00900"></a>00900 this-><a class="code" href="a00248.html#a07a10e07246ef2a68c0c3f08d94c7607" title="[Re]sets the error state.">clear</a>();
<a name="l00901"></a>00901 }
<a name="l00902"></a>00902 <span class="preprocessor">#endif</span>
<a name="l00903"></a>00903 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00904"></a>00904 <span class="comment"> /**</span>
<a name="l00905"></a>00905 <span class="comment"> * @brief Close the file.</span>
<a name="l00906"></a>00906 <span class="comment"> *</span>
<a name="l00907"></a>00907 <span class="comment"> * Calls @c std::basic_filebuf::close(). If that function</span>
<a name="l00908"></a>00908 <span class="comment"> * fails, @c failbit is set in the stream's error state.</span>
<a name="l00909"></a>00909 <span class="comment"> */</span>
<a name="l00910"></a>00910 <span class="keywordtype">void</span>
<a name="l00911"></a><a class="code" href="a00395.html#adf2ca5f243067d406a96f91763173839">00911</a> <a class="code" href="a00395.html#adf2ca5f243067d406a96f91763173839" title="Close the file.">close</a>()
<a name="l00912"></a>00912 {
<a name="l00913"></a>00913 <span class="keywordflow">if</span> (!_M_filebuf.<a class="code" href="a00247.html#a5e13a128abb0a5dd8ef1e3d10597031f" title="Closes the currently associated file.">close</a>())
<a name="l00914"></a>00914 this-><a class="code" href="a00248.html#a2da7d3305cba0695b1d1bec916ae64b0" title="Sets additional flags in the error state.">setstate</a>(<a class="code" href="a00528.html#aec074f3d22b7cf5e70d1e91cb9f9d5c4" title="Indicates that an input operation failed to read the expected characters, or that an output operation...">ios_base::failbit</a>);
<a name="l00915"></a>00915 }
<a name="l00916"></a>00916 };
<a name="l00917"></a>00917
<a name="l00918"></a>00918 _GLIBCXX_END_NAMESPACE_VERSION
<a name="l00919"></a>00919 } <span class="comment">// namespace</span>
<a name="l00920"></a>00920
<a name="l00921"></a>00921 <span class="preprocessor">#include <<a class="code" href="a00882.html">bits/fstream.tcc</a>></span>
<a name="l00922"></a>00922
<a name="l00923"></a>00923 <span class="preprocessor">#endif </span><span class="comment">/* _GLIBCXX_FSTREAM */</span>
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