<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>libstdc++: codecvt_specializations.h Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.4 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">libstdc++</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
initNavTree('a00808.html','');
</script>
<div id="doc-content">
<div class="header">
<div class="headertitle">
<div class="title">codecvt_specializations.h</div> </div>
</div>
<div class="contents">
<a href="a00808.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Locale support (codecvt) -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,</span>
<a name="l00004"></a>00004 <span class="comment">// 2008, 2009, 2010</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
<a name="l00027"></a>00027 <span class="comment">//</span>
<a name="l00028"></a>00028 <span class="comment">// ISO C++ 14882: 22.2.1.5 Template class codecvt</span>
<a name="l00029"></a>00029 <span class="comment">//</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="comment">// Written by Benjamin Kosnik <bkoz@redhat.com></span>
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment">/** @file ext/codecvt_specializations.h</span>
<a name="l00034"></a>00034 <span class="comment"> * This file is a GNU extension to the Standard C++ Library.</span>
<a name="l00035"></a>00035 <span class="comment"> */</span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#ifndef _EXT_CODECVT_SPECIALIZATIONS_H</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define _EXT_CODECVT_SPECIALIZATIONS_H 1</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <<a class="code" href="a00781.html">bits/c++config.h</a>></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <<a class="code" href="a00925.html">locale</a>></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <iconv.h></span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keyword">namespace </span>__gnu_cxx _GLIBCXX_VISIBILITY(default)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 _GLIBCXX_BEGIN_NAMESPACE_VERSION
<a name="l00047"></a>00047 <span class="comment"></span>
<a name="l00048"></a>00048 <span class="comment"> /// Extension to use iconv for dealing with character encodings.</span>
<a name="l00049"></a>00049 <span class="comment"></span> <span class="comment">// This includes conversions and comparisons between various character</span>
<a name="l00050"></a>00050 <span class="comment">// sets. This object encapsulates data that may need to be shared between</span>
<a name="l00051"></a>00051 <span class="comment">// char_traits, codecvt and ctype.</span>
<a name="l00052"></a><a class="code" href="a00043.html">00052</a> <span class="keyword">class </span><a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keyword">public</span>:
<a name="l00055"></a>00055 <span class="comment">// Types: </span>
<a name="l00056"></a>00056 <span class="comment">// NB: A conversion descriptor subsumes and enhances the</span>
<a name="l00057"></a>00057 <span class="comment">// functionality of a simple state type such as mbstate_t.</span>
<a name="l00058"></a>00058 <span class="keyword">typedef</span> iconv_t descriptor_type;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">protected</span>:
<a name="l00061"></a>00061 <span class="comment">// Name of internal character set encoding.</span>
<a name="l00062"></a>00062 <a class="code" href="a00253.html">std::string</a> _M_int_enc;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="comment">// Name of external character set encoding.</span>
<a name="l00065"></a>00065 <a class="code" href="a00253.html">std::string</a> _M_ext_enc;
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="comment">// Conversion descriptor between external encoding to internal encoding.</span>
<a name="l00068"></a>00068 descriptor_type _M_in_desc;
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// Conversion descriptor between internal encoding to external encoding.</span>
<a name="l00071"></a>00071 descriptor_type _M_out_desc;
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// The byte-order marker for the external encoding, if necessary.</span>
<a name="l00074"></a>00074 <span class="keywordtype">int</span> _M_ext_bom;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">// The byte-order marker for the internal encoding, if necessary.</span>
<a name="l00077"></a>00077 <span class="keywordtype">int</span> _M_int_bom;
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// Number of external bytes needed to construct one complete</span>
<a name="l00080"></a>00080 <span class="comment">// character in the internal encoding.</span>
<a name="l00081"></a>00081 <span class="comment">// NB: -1 indicates variable, or stateful, encodings.</span>
<a name="l00082"></a>00082 <span class="keywordtype">int</span> _M_bytes;
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keyword">public</span>:
<a name="l00085"></a>00085 <span class="keyword">explicit</span>
<a name="l00086"></a>00086 <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>()
<a name="l00087"></a>00087 : _M_in_desc(0), _M_out_desc(0), _M_ext_bom(0), _M_int_bom(0), _M_bytes(0)
<a name="l00088"></a>00088 { }
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="keyword">explicit</span>
<a name="l00091"></a>00091 <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* __int, <span class="keyword">const</span> <span class="keywordtype">char</span>* __ext,
<a name="l00092"></a>00092 <span class="keywordtype">int</span> __ibom = 0, <span class="keywordtype">int</span> __ebom = 0, <span class="keywordtype">int</span> __bytes = 1)
<a name="l00093"></a>00093 : _M_int_enc(__int), _M_ext_enc(__ext), _M_in_desc(0), _M_out_desc(0),
<a name="l00094"></a>00094 _M_ext_bom(__ebom), _M_int_bom(__ibom), _M_bytes(__bytes)
<a name="l00095"></a>00095 { init(); }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="comment">// 21.1.2 traits typedefs</span>
<a name="l00098"></a>00098 <span class="comment">// p4</span>
<a name="l00099"></a>00099 <span class="comment">// typedef STATE_T state_type</span>
<a name="l00100"></a>00100 <span class="comment">// requires: state_type shall meet the requirements of</span>
<a name="l00101"></a>00101 <span class="comment">// CopyConstructible types (20.1.3)</span>
<a name="l00102"></a>00102 <span class="comment">// NB: This does not preserve the actual state of the conversion</span>
<a name="l00103"></a>00103 <span class="comment">// descriptor member, but it does duplicate the encoding</span>
<a name="l00104"></a>00104 <span class="comment">// information.</span>
<a name="l00105"></a>00105 <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>(<span class="keyword">const</span> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>& __obj) : _M_in_desc(0), _M_out_desc(0)
<a name="l00106"></a>00106 { construct(__obj); }
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="comment">// Need assignment operator as well.</span>
<a name="l00109"></a>00109 <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>&
<a name="l00110"></a>00110 operator=(<span class="keyword">const</span> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>& __obj)
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 construct(__obj);
<a name="l00113"></a>00113 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 ~<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>()
<a name="l00117"></a>00117 { destroy(); }
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="keywordtype">bool</span>
<a name="l00120"></a>00120 good() <span class="keyword">const</span> <span class="keywordflow">throw</span>()
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 <span class="keyword">const</span> descriptor_type __err = (iconv_t)(-1);
<a name="l00123"></a>00123 <span class="keywordtype">bool</span> __test = _M_in_desc && _M_in_desc != __err;
<a name="l00124"></a>00124 __test &= _M_out_desc && _M_out_desc != __err;
<a name="l00125"></a>00125 <span class="keywordflow">return</span> __test;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keywordtype">int</span>
<a name="l00129"></a>00129 character_ratio()<span class="keyword"> const</span>
<a name="l00130"></a>00130 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_bytes; }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>
<a name="l00133"></a>00133 internal_encoding()<span class="keyword"> const</span>
<a name="l00134"></a>00134 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_int_enc; }
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keywordtype">int</span>
<a name="l00137"></a>00137 internal_bom()<span class="keyword"> const</span>
<a name="l00138"></a>00138 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_int_bom; }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keyword">const</span> <a class="code" href="a00253.html">std::string</a>
<a name="l00141"></a>00141 external_encoding()<span class="keyword"> const</span>
<a name="l00142"></a>00142 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_ext_enc; }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keywordtype">int</span>
<a name="l00145"></a>00145 external_bom()<span class="keyword"> const</span>
<a name="l00146"></a>00146 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_ext_bom; }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="keyword">const</span> descriptor_type&
<a name="l00149"></a>00149 in_descriptor()<span class="keyword"> const</span>
<a name="l00150"></a>00150 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_in_desc; }
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="keyword">const</span> descriptor_type&
<a name="l00153"></a>00153 out_descriptor()<span class="keyword"> const</span>
<a name="l00154"></a>00154 <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_out_desc; }
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keyword">protected</span>:
<a name="l00157"></a>00157 <span class="keywordtype">void</span>
<a name="l00158"></a>00158 init()
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <span class="keyword">const</span> descriptor_type __err = (iconv_t)(-1);
<a name="l00161"></a>00161 <span class="keyword">const</span> <span class="keywordtype">bool</span> __have_encodings = _M_int_enc.<a class="code" href="a00253.html#ac12b0940bdc4c97c6360e68455c7bd70" title="Returns the number of characters in the string, not including any null-termination.">size</a>() && _M_ext_enc.<a class="code" href="a00253.html#ac12b0940bdc4c97c6360e68455c7bd70" title="Returns the number of characters in the string, not including any null-termination.">size</a>();
<a name="l00162"></a>00162 <span class="keywordflow">if</span> (!_M_in_desc && __have_encodings)
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 _M_in_desc = iconv_open(_M_int_enc.<a class="code" href="a00253.html#a0f3d8c7b031efea71704ca87660012e0" title="Return const pointer to null-terminated contents.">c_str</a>(), _M_ext_enc.<a class="code" href="a00253.html#a0f3d8c7b031efea71704ca87660012e0" title="Return const pointer to null-terminated contents.">c_str</a>());
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (_M_in_desc == __err)
<a name="l00166"></a>00166 std::__throw_runtime_error(__N(<span class="stringliteral">"encoding_state::_M_init "</span>
<a name="l00167"></a>00167 <span class="stringliteral">"creating iconv input descriptor failed"</span>));
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169 <span class="keywordflow">if</span> (!_M_out_desc && __have_encodings)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 _M_out_desc = iconv_open(_M_ext_enc.<a class="code" href="a00253.html#a0f3d8c7b031efea71704ca87660012e0" title="Return const pointer to null-terminated contents.">c_str</a>(), _M_int_enc.<a class="code" href="a00253.html#a0f3d8c7b031efea71704ca87660012e0" title="Return const pointer to null-terminated contents.">c_str</a>());
<a name="l00172"></a>00172 <span class="keywordflow">if</span> (_M_out_desc == __err)
<a name="l00173"></a>00173 std::__throw_runtime_error(__N(<span class="stringliteral">"encoding_state::_M_init "</span>
<a name="l00174"></a>00174 <span class="stringliteral">"creating iconv output descriptor failed"</span>));
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="keywordtype">void</span>
<a name="l00179"></a>00179 construct(<span class="keyword">const</span> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>& __obj)
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 destroy();
<a name="l00182"></a>00182 _M_int_enc = __obj._M_int_enc;
<a name="l00183"></a>00183 _M_ext_enc = __obj._M_ext_enc;
<a name="l00184"></a>00184 _M_ext_bom = __obj._M_ext_bom;
<a name="l00185"></a>00185 _M_int_bom = __obj._M_int_bom;
<a name="l00186"></a>00186 _M_bytes = __obj._M_bytes;
<a name="l00187"></a>00187 init();
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordtype">void</span>
<a name="l00191"></a>00191 destroy() <span class="keywordflow">throw</span>()
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 <span class="keyword">const</span> descriptor_type __err = (iconv_t)(-1);
<a name="l00194"></a>00194 <span class="keywordflow">if</span> (_M_in_desc && _M_in_desc != __err)
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196 iconv_close(_M_in_desc);
<a name="l00197"></a>00197 _M_in_desc = 0;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (_M_out_desc && _M_out_desc != __err)
<a name="l00200"></a>00200 {
<a name="l00201"></a>00201 iconv_close(_M_out_desc);
<a name="l00202"></a>00202 _M_out_desc = 0;
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204 }
<a name="l00205"></a>00205 };
<a name="l00206"></a>00206 <span class="comment"></span>
<a name="l00207"></a>00207 <span class="comment"> /// encoding_char_traits</span>
<a name="l00208"></a>00208 <span class="comment"></span> <span class="comment">// Custom traits type with encoding_state for the state type, and the</span>
<a name="l00209"></a>00209 <span class="comment">// associated fpos<encoding_state> for the position type, all other</span>
<a name="l00210"></a>00210 <span class="comment">// bits equivalent to the required char_traits instantiations.</span>
<a name="l00211"></a>00211 <span class="keyword">template</span><<span class="keyword">typename</span> _CharT>
<a name="l00212"></a><a class="code" href="a00042.html">00212</a> <span class="keyword">struct </span><a class="code" href="a00042.html" title="encoding_char_traits">encoding_char_traits</a> : <span class="keyword">public</span> std::<a class="code" href="a00034.html" title="Base class used to implement std::char_traits.">char_traits</a><_CharT>
<a name="l00213"></a>00213 {
<a name="l00214"></a>00214 <span class="keyword">typedef</span> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a> state_type;
<a name="l00215"></a>00215 <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="a00476.html" title="Class representing stream positions.">std::fpos<state_type></a> <a class="code" href="a00476.html" title="Class representing stream positions.">pos_type</a>;
<a name="l00216"></a>00216 };
<a name="l00217"></a>00217
<a name="l00218"></a>00218 _GLIBCXX_END_NAMESPACE_VERSION
<a name="l00219"></a>00219 } <span class="comment">// namespace</span>
<a name="l00220"></a>00220
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="keyword">namespace </span>std _GLIBCXX_VISIBILITY(default)
<a name="l00223"></a>00223 {
<a name="l00224"></a>00224 _GLIBCXX_BEGIN_NAMESPACE_VERSION
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="keyword">using</span> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">__gnu_cxx::encoding_state</a>;
<a name="l00227"></a>00227 <span class="comment"></span>
<a name="l00228"></a>00228 <span class="comment"> /// codecvt<InternT, _ExternT, encoding_state> specialization.</span>
<a name="l00229"></a>00229 <span class="comment"></span> <span class="comment">// This partial specialization takes advantage of iconv to provide</span>
<a name="l00230"></a>00230 <span class="comment">// code conversions between a large number of character encodings.</span>
<a name="l00231"></a>00231 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00232"></a><a class="code" href="a00427.html">00232</a> <span class="keyword">class </span><a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt</a><_InternT, _ExternT, <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">encoding_state</a>>
<a name="l00233"></a>00233 : <span class="keyword">public</span> <a class="code" href="a00002.html" title="Common base for codecvt functions.">__codecvt_abstract_base</a><_InternT, _ExternT, encoding_state>
<a name="l00234"></a>00234 {
<a name="l00235"></a>00235 <span class="keyword">public</span>:
<a name="l00236"></a>00236 <span class="comment">// Types:</span>
<a name="l00237"></a>00237 <span class="keyword">typedef</span> codecvt_base::result result;
<a name="l00238"></a>00238 <span class="keyword">typedef</span> _InternT intern_type;
<a name="l00239"></a>00239 <span class="keyword">typedef</span> _ExternT extern_type;
<a name="l00240"></a>00240 <span class="keyword">typedef</span> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">__gnu_cxx::encoding_state</a> <a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>;
<a name="l00241"></a>00241 <span class="keyword">typedef</span> state_type::descriptor_type descriptor_type;
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="comment">// Data Members:</span>
<a name="l00244"></a>00244 <span class="keyword">static</span> <a class="code" href="a00583.html" title="Facet ID class.The ID class provides facets with an index used to identify them. Every facet class mu...">locale::id</a> id;
<a name="l00245"></a>00245
<a name="l00246"></a>00246 <span class="keyword">explicit</span>
<a name="l00247"></a>00247 <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt</a>(<span class="keywordtype">size_t</span> __refs = 0)
<a name="l00248"></a>00248 : <a class="code" href="a00002.html" title="Common base for codecvt functions.">__codecvt_abstract_base<intern_type, extern_type, state_type></a>(__refs)
<a name="l00249"></a>00249 { }
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="keyword">explicit</span>
<a name="l00252"></a>00252 <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt</a>(<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>& __enc, <span class="keywordtype">size_t</span> __refs = 0)
<a name="l00253"></a>00253 : <a class="code" href="a00002.html" title="Common base for codecvt functions.">__codecvt_abstract_base<intern_type, extern_type, state_type></a>(__refs)
<a name="l00254"></a>00254 { }
<a name="l00255"></a>00255
<a name="l00256"></a>00256 <span class="keyword">protected</span>:
<a name="l00257"></a>00257 <span class="keyword">virtual</span>
<a name="l00258"></a>00258 ~<a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt</a>() { }
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="keyword">virtual</span> result
<a name="l00261"></a>00261 <a class="code" href="a00426.html#a7a5c720e37027b56e41f10b8e9313821" title="Convert from internal to external character set.">do_out</a>(<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>& __state, <span class="keyword">const</span> intern_type* __from,
<a name="l00262"></a>00262 <span class="keyword">const</span> intern_type* __from_end, <span class="keyword">const</span> intern_type*& __from_next,
<a name="l00263"></a>00263 extern_type* __to, extern_type* __to_end,
<a name="l00264"></a>00264 extern_type*& __to_next) <span class="keyword">const</span>;
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="keyword">virtual</span> result
<a name="l00267"></a>00267 do_unshift(<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>& __state, extern_type* __to,
<a name="l00268"></a>00268 extern_type* __to_end, extern_type*& __to_next) <span class="keyword">const</span>;
<a name="l00269"></a>00269
<a name="l00270"></a>00270 <span class="keyword">virtual</span> result
<a name="l00271"></a>00271 do_in(<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>& __state, <span class="keyword">const</span> extern_type* __from,
<a name="l00272"></a>00272 <span class="keyword">const</span> extern_type* __from_end, <span class="keyword">const</span> extern_type*& __from_next,
<a name="l00273"></a>00273 intern_type* __to, intern_type* __to_end,
<a name="l00274"></a>00274 intern_type*& __to_next) <span class="keyword">const</span>;
<a name="l00275"></a>00275
<a name="l00276"></a>00276 <span class="keyword">virtual</span> <span class="keywordtype">int</span>
<a name="l00277"></a>00277 do_encoding() <span class="keyword">const</span> <span class="keywordflow">throw</span>();
<a name="l00278"></a>00278
<a name="l00279"></a>00279 <span class="keyword">virtual</span> <span class="keywordtype">bool</span>
<a name="l00280"></a>00280 do_always_noconv() <span class="keyword">const</span> <span class="keywordflow">throw</span>();
<a name="l00281"></a>00281
<a name="l00282"></a>00282 <span class="keyword">virtual</span> <span class="keywordtype">int</span>
<a name="l00283"></a>00283 do_length(<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>&, <span class="keyword">const</span> extern_type* __from,
<a name="l00284"></a>00284 <span class="keyword">const</span> extern_type* __end, <span class="keywordtype">size_t</span> __max) <span class="keyword">const</span>;
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="keyword">virtual</span> <span class="keywordtype">int</span>
<a name="l00287"></a>00287 do_max_length() <span class="keyword">const</span> <span class="keywordflow">throw</span>();
<a name="l00288"></a>00288 };
<a name="l00289"></a>00289
<a name="l00290"></a>00290 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00291"></a>00291 <a class="code" href="a00583.html" title="Facet ID class.The ID class provides facets with an index used to identify them. Every facet class mu...">locale::id</a>
<a name="l00292"></a>00292 <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt<_InternT, _ExternT, encoding_state>::id</a>;
<a name="l00293"></a>00293
<a name="l00294"></a>00294 <span class="comment">// This adaptor works around the signature problems of the second</span>
<a name="l00295"></a>00295 <span class="comment">// argument to iconv(): SUSv2 and others use 'const char**', but glibc 2.2</span>
<a name="l00296"></a>00296 <span class="comment">// uses 'char**', which matches the POSIX 1003.1-2001 standard.</span>
<a name="l00297"></a>00297 <span class="comment">// Using this adaptor, g++ will do the work for us.</span>
<a name="l00298"></a>00298 <span class="keyword">template</span><<span class="keyword">typename</span> _Tp>
<a name="l00299"></a>00299 <span class="keyword">inline</span> <span class="keywordtype">size_t</span>
<a name="l00300"></a>00300 __iconv_adaptor(<span class="keywordtype">size_t</span>(*__func)(iconv_t, _Tp, <span class="keywordtype">size_t</span>*, <span class="keywordtype">char</span>**, <span class="keywordtype">size_t</span>*),
<a name="l00301"></a>00301 iconv_t __cd, <span class="keywordtype">char</span>** __inbuf, <span class="keywordtype">size_t</span>* __inbytes,
<a name="l00302"></a>00302 <span class="keywordtype">char</span>** __outbuf, <span class="keywordtype">size_t</span>* __outbytes)
<a name="l00303"></a>00303 { <span class="keywordflow">return</span> __func(__cd, (_Tp)__inbuf, __inbytes, __outbuf, __outbytes); }
<a name="l00304"></a>00304
<a name="l00305"></a>00305 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00306"></a>00306 codecvt_base::result
<a name="l00307"></a>00307 <a class="code" href="a00426.html#a7a5c720e37027b56e41f10b8e9313821" title="Convert from internal to external character set.">codecvt<_InternT, _ExternT, encoding_state>::</a>
<a name="l00308"></a><a class="code" href="a00427.html#adf9d866083c98b86e7665ac6ddd06c5b">00308</a> <a class="code" href="a00426.html#a7a5c720e37027b56e41f10b8e9313821" title="Convert from internal to external character set."> do_out</a>(<a class="code" href="a00043.html" title="Extension to use iconv for dealing with character encodings.">state_type</a>& __state, <span class="keyword">const</span> intern_type* __from,
<a name="l00309"></a>00309 <span class="keyword">const</span> intern_type* __from_end, <span class="keyword">const</span> intern_type*& __from_next,
<a name="l00310"></a>00310 extern_type* __to, extern_type* __to_end,
<a name="l00311"></a>00311 extern_type*& __to_next)<span class="keyword"> const</span>
<a name="l00312"></a>00312 <span class="keyword"> </span>{
<a name="l00313"></a>00313 result __ret = codecvt_base::error;
<a name="l00314"></a>00314 <span class="keywordflow">if</span> (__state.good())
<a name="l00315"></a>00315 {
<a name="l00316"></a>00316 <span class="keyword">const</span> descriptor_type& __desc = __state.out_descriptor();
<a name="l00317"></a>00317 <span class="keyword">const</span> <span class="keywordtype">size_t</span> __fmultiple = <span class="keyword">sizeof</span>(intern_type);
<a name="l00318"></a>00318 <span class="keywordtype">size_t</span> __fbytes = __fmultiple * (__from_end - __from);
<a name="l00319"></a>00319 <span class="keyword">const</span> <span class="keywordtype">size_t</span> __tmultiple = <span class="keyword">sizeof</span>(extern_type);
<a name="l00320"></a>00320 <span class="keywordtype">size_t</span> __tbytes = __tmultiple * (__to_end - __to);
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="comment">// Argument list for iconv specifies a byte sequence. Thus,</span>
<a name="l00323"></a>00323 <span class="comment">// all to/from arrays must be brutally casted to char*.</span>
<a name="l00324"></a>00324 <span class="keywordtype">char</span>* __cto = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__to);
<a name="l00325"></a>00325 <span class="keywordtype">char</span>* __cfrom;
<a name="l00326"></a>00326 <span class="keywordtype">size_t</span> __conv;
<a name="l00327"></a>00327
<a name="l00328"></a>00328 <span class="comment">// Some encodings need a byte order marker as the first item</span>
<a name="l00329"></a>00329 <span class="comment">// in the byte stream, to designate endian-ness. The default</span>
<a name="l00330"></a>00330 <span class="comment">// value for the byte order marker is NULL, so if this is</span>
<a name="l00331"></a>00331 <span class="comment">// the case, it's not necessary and we can just go on our</span>
<a name="l00332"></a>00332 <span class="comment">// merry way.</span>
<a name="l00333"></a>00333 <span class="keywordtype">int</span> __int_bom = __state.internal_bom();
<a name="l00334"></a>00334 <span class="keywordflow">if</span> (__int_bom)
<a name="l00335"></a>00335 {
<a name="l00336"></a>00336 <span class="keywordtype">size_t</span> __size = __from_end - __from;
<a name="l00337"></a>00337 intern_type* __cfixed = <span class="keyword">static_cast<</span>intern_type*<span class="keyword">></span>
<a name="l00338"></a>00338 (__builtin_alloca(<span class="keyword">sizeof</span>(intern_type) * (__size + 1)));
<a name="l00339"></a>00339 __cfixed[0] = <span class="keyword">static_cast<</span>intern_type<span class="keyword">></span>(__int_bom);
<a name="l00340"></a>00340 <a class="code" href="a00415.html" title="Basis for explicit traits specializations.">char_traits<intern_type>::copy</a>(__cfixed + 1, __from, __size);
<a name="l00341"></a>00341 __cfrom = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__cfixed);
<a name="l00342"></a>00342 __conv = __iconv_adaptor(iconv, __desc, &__cfrom,
<a name="l00343"></a>00343 &__fbytes, &__cto, &__tbytes);
<a name="l00344"></a>00344 }
<a name="l00345"></a>00345 <span class="keywordflow">else</span>
<a name="l00346"></a>00346 {
<a name="l00347"></a>00347 intern_type* __cfixed = <span class="keyword">const_cast<</span>intern_type*<span class="keyword">></span>(__from);
<a name="l00348"></a>00348 __cfrom = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__cfixed);
<a name="l00349"></a>00349 __conv = __iconv_adaptor(iconv, __desc, &__cfrom, &__fbytes,
<a name="l00350"></a>00350 &__cto, &__tbytes);
<a name="l00351"></a>00351 }
<a name="l00352"></a>00352
<a name="l00353"></a>00353 <span class="keywordflow">if</span> (__conv != <span class="keywordtype">size_t</span>(-1))
<a name="l00354"></a>00354 {
<a name="l00355"></a>00355 __from_next = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>intern_type*<span class="keyword">></span>(__cfrom);
<a name="l00356"></a>00356 __to_next = <span class="keyword">reinterpret_cast<</span>extern_type*<span class="keyword">></span>(__cto);
<a name="l00357"></a>00357 __ret = codecvt_base::ok;
<a name="l00358"></a>00358 }
<a name="l00359"></a>00359 <span class="keywordflow">else</span>
<a name="l00360"></a>00360 {
<a name="l00361"></a>00361 <span class="keywordflow">if</span> (__fbytes < __fmultiple * (__from_end - __from))
<a name="l00362"></a>00362 {
<a name="l00363"></a>00363 __from_next = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>intern_type*<span class="keyword">></span>(__cfrom);
<a name="l00364"></a>00364 __to_next = <span class="keyword">reinterpret_cast<</span>extern_type*<span class="keyword">></span>(__cto);
<a name="l00365"></a>00365 __ret = codecvt_base::partial;
<a name="l00366"></a>00366 }
<a name="l00367"></a>00367 <span class="keywordflow">else</span>
<a name="l00368"></a>00368 __ret = codecvt_base::error;
<a name="l00369"></a>00369 }
<a name="l00370"></a>00370 }
<a name="l00371"></a>00371 <span class="keywordflow">return</span> __ret;
<a name="l00372"></a>00372 }
<a name="l00373"></a>00373
<a name="l00374"></a>00374 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00375"></a>00375 codecvt_base::result
<a name="l00376"></a>00376 <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation.">codecvt<_InternT, _ExternT, encoding_state>::</a>
<a name="l00377"></a>00377 <a class="code" href="a00426.html" title="Primary class template codecvt.NB: Generic, mostly useless implementation."> do_unshift</a>(state_type& __state, extern_type* __to,
<a name="l00378"></a>00378 extern_type* __to_end, extern_type*& __to_next)<span class="keyword"> const</span>
<a name="l00379"></a>00379 <span class="keyword"> </span>{
<a name="l00380"></a>00380 result __ret = codecvt_base::error;
<a name="l00381"></a>00381 <span class="keywordflow">if</span> (__state.good())
<a name="l00382"></a>00382 {
<a name="l00383"></a>00383 <span class="keyword">const</span> descriptor_type& __desc = __state.in_descriptor();
<a name="l00384"></a>00384 <span class="keyword">const</span> <span class="keywordtype">size_t</span> __tmultiple = <span class="keyword">sizeof</span>(intern_type);
<a name="l00385"></a>00385 <span class="keywordtype">size_t</span> __tlen = __tmultiple * (__to_end - __to);
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="comment">// Argument list for iconv specifies a byte sequence. Thus,</span>
<a name="l00388"></a>00388 <span class="comment">// all to/from arrays must be brutally casted to char*.</span>
<a name="l00389"></a>00389 <span class="keywordtype">char</span>* __cto = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__to);
<a name="l00390"></a>00390 <span class="keywordtype">size_t</span> __conv = __iconv_adaptor(iconv,__desc, 0, 0,
<a name="l00391"></a>00391 &__cto, &__tlen);
<a name="l00392"></a>00392
<a name="l00393"></a>00393 <span class="keywordflow">if</span> (__conv != <span class="keywordtype">size_t</span>(-1))
<a name="l00394"></a>00394 {
<a name="l00395"></a>00395 __to_next = <span class="keyword">reinterpret_cast<</span>extern_type*<span class="keyword">></span>(__cto);
<a name="l00396"></a>00396 <span class="keywordflow">if</span> (__tlen == __tmultiple * (__to_end - __to))
<a name="l00397"></a>00397 __ret = codecvt_base::noconv;
<a name="l00398"></a>00398 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (__tlen == 0)
<a name="l00399"></a>00399 __ret = codecvt_base::ok;
<a name="l00400"></a>00400 <span class="keywordflow">else</span>
<a name="l00401"></a>00401 __ret = codecvt_base::partial;
<a name="l00402"></a>00402 }
<a name="l00403"></a>00403 <span class="keywordflow">else</span>
<a name="l00404"></a>00404 __ret = codecvt_base::error;
<a name="l00405"></a>00405 }
<a name="l00406"></a>00406 <span class="keywordflow">return</span> __ret;
<a name="l00407"></a>00407 }
<a name="l00408"></a>00408
<a name="l00409"></a>00409 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00410"></a>00410 codecvt_base::result
<a name="l00411"></a>00411 codecvt<_InternT, _ExternT, encoding_state>::
<a name="l00412"></a>00412 do_in(state_type& __state, <span class="keyword">const</span> extern_type* __from,
<a name="l00413"></a>00413 <span class="keyword">const</span> extern_type* __from_end, <span class="keyword">const</span> extern_type*& __from_next,
<a name="l00414"></a>00414 intern_type* __to, intern_type* __to_end,
<a name="l00415"></a>00415 intern_type*& __to_next)<span class="keyword"> const</span>
<a name="l00416"></a>00416 <span class="keyword"> </span>{
<a name="l00417"></a>00417 result __ret = codecvt_base::error;
<a name="l00418"></a>00418 <span class="keywordflow">if</span> (__state.good())
<a name="l00419"></a>00419 {
<a name="l00420"></a>00420 <span class="keyword">const</span> descriptor_type& __desc = __state.in_descriptor();
<a name="l00421"></a>00421 <span class="keyword">const</span> <span class="keywordtype">size_t</span> __fmultiple = <span class="keyword">sizeof</span>(extern_type);
<a name="l00422"></a>00422 <span class="keywordtype">size_t</span> __flen = __fmultiple * (__from_end - __from);
<a name="l00423"></a>00423 <span class="keyword">const</span> <span class="keywordtype">size_t</span> __tmultiple = <span class="keyword">sizeof</span>(intern_type);
<a name="l00424"></a>00424 <span class="keywordtype">size_t</span> __tlen = __tmultiple * (__to_end - __to);
<a name="l00425"></a>00425
<a name="l00426"></a>00426 <span class="comment">// Argument list for iconv specifies a byte sequence. Thus,</span>
<a name="l00427"></a>00427 <span class="comment">// all to/from arrays must be brutally casted to char*.</span>
<a name="l00428"></a>00428 <span class="keywordtype">char</span>* __cto = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__to);
<a name="l00429"></a>00429 <span class="keywordtype">char</span>* __cfrom;
<a name="l00430"></a>00430 <span class="keywordtype">size_t</span> __conv;
<a name="l00431"></a>00431
<a name="l00432"></a>00432 <span class="comment">// Some encodings need a byte order marker as the first item</span>
<a name="l00433"></a>00433 <span class="comment">// in the byte stream, to designate endian-ness. The default</span>
<a name="l00434"></a>00434 <span class="comment">// value for the byte order marker is NULL, so if this is</span>
<a name="l00435"></a>00435 <span class="comment">// the case, it's not necessary and we can just go on our</span>
<a name="l00436"></a>00436 <span class="comment">// merry way.</span>
<a name="l00437"></a>00437 <span class="keywordtype">int</span> __ext_bom = __state.external_bom();
<a name="l00438"></a>00438 <span class="keywordflow">if</span> (__ext_bom)
<a name="l00439"></a>00439 {
<a name="l00440"></a>00440 <span class="keywordtype">size_t</span> __size = __from_end - __from;
<a name="l00441"></a>00441 extern_type* __cfixed = <span class="keyword">static_cast<</span>extern_type*<span class="keyword">></span>
<a name="l00442"></a>00442 (__builtin_alloca(<span class="keyword">sizeof</span>(extern_type) * (__size + 1)));
<a name="l00443"></a>00443 __cfixed[0] = <span class="keyword">static_cast<</span>extern_type<span class="keyword">></span>(__ext_bom);
<a name="l00444"></a>00444 char_traits<extern_type>::copy(__cfixed + 1, __from, __size);
<a name="l00445"></a>00445 __cfrom = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__cfixed);
<a name="l00446"></a>00446 __conv = __iconv_adaptor(iconv, __desc, &__cfrom,
<a name="l00447"></a>00447 &__flen, &__cto, &__tlen);
<a name="l00448"></a>00448 }
<a name="l00449"></a>00449 <span class="keywordflow">else</span>
<a name="l00450"></a>00450 {
<a name="l00451"></a>00451 extern_type* __cfixed = <span class="keyword">const_cast<</span>extern_type*<span class="keyword">></span>(__from);
<a name="l00452"></a>00452 __cfrom = <span class="keyword">reinterpret_cast<</span><span class="keywordtype">char</span>*<span class="keyword">></span>(__cfixed);
<a name="l00453"></a>00453 __conv = __iconv_adaptor(iconv, __desc, &__cfrom,
<a name="l00454"></a>00454 &__flen, &__cto, &__tlen);
<a name="l00455"></a>00455 }
<a name="l00456"></a>00456
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="keywordflow">if</span> (__conv != <span class="keywordtype">size_t</span>(-1))
<a name="l00459"></a>00459 {
<a name="l00460"></a>00460 __from_next = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>extern_type*<span class="keyword">></span>(__cfrom);
<a name="l00461"></a>00461 __to_next = <span class="keyword">reinterpret_cast<</span>intern_type*<span class="keyword">></span>(__cto);
<a name="l00462"></a>00462 __ret = codecvt_base::ok;
<a name="l00463"></a>00463 }
<a name="l00464"></a>00464 <span class="keywordflow">else</span>
<a name="l00465"></a>00465 {
<a name="l00466"></a>00466 <span class="keywordflow">if</span> (__flen < static_cast<size_t>(__from_end - __from))
<a name="l00467"></a>00467 {
<a name="l00468"></a>00468 __from_next = <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span>extern_type*<span class="keyword">></span>(__cfrom);
<a name="l00469"></a>00469 __to_next = <span class="keyword">reinterpret_cast<</span>intern_type*<span class="keyword">></span>(__cto);
<a name="l00470"></a>00470 __ret = codecvt_base::partial;
<a name="l00471"></a>00471 }
<a name="l00472"></a>00472 <span class="keywordflow">else</span>
<a name="l00473"></a>00473 __ret = codecvt_base::error;
<a name="l00474"></a>00474 }
<a name="l00475"></a>00475 }
<a name="l00476"></a>00476 <span class="keywordflow">return</span> __ret;
<a name="l00477"></a>00477 }
<a name="l00478"></a>00478
<a name="l00479"></a>00479 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00480"></a>00480 <span class="keywordtype">int</span>
<a name="l00481"></a>00481 codecvt<_InternT, _ExternT, encoding_state>::
<a name="l00482"></a>00482 do_encoding() <span class="keyword">const</span> throw()
<a name="l00483"></a>00483 {
<a name="l00484"></a>00484 <span class="keywordtype">int</span> __ret = 0;
<a name="l00485"></a>00485 <span class="keywordflow">if</span> (<span class="keyword">sizeof</span>(_ExternT) <= <span class="keyword">sizeof</span>(_InternT))
<a name="l00486"></a>00486 __ret = <span class="keyword">sizeof</span>(_InternT) / <span class="keyword">sizeof</span>(_ExternT);
<a name="l00487"></a>00487 <span class="keywordflow">return</span> __ret;
<a name="l00488"></a>00488 }
<a name="l00489"></a>00489
<a name="l00490"></a>00490 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00491"></a>00491 <span class="keywordtype">bool</span>
<a name="l00492"></a>00492 codecvt<_InternT, _ExternT, encoding_state>::
<a name="l00493"></a>00493 do_always_noconv() <span class="keyword">const</span> throw()
<a name="l00494"></a>00494 { <span class="keywordflow">return</span> <span class="keyword">false</span>; }
<a name="l00495"></a>00495
<a name="l00496"></a>00496 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00497"></a>00497 <span class="keywordtype">int</span>
<a name="l00498"></a>00498 codecvt<_InternT, _ExternT, encoding_state>::
<a name="l00499"></a>00499 do_length(state_type&, <span class="keyword">const</span> extern_type* __from,
<a name="l00500"></a>00500 <span class="keyword">const</span> extern_type* __end, <span class="keywordtype">size_t</span> __max)<span class="keyword"> const</span>
<a name="l00501"></a>00501 <span class="keyword"> </span>{ <span class="keywordflow">return</span> <a class="code" href="a01184.html#ga49f0c87cb0e1bf950f5c2d49aa106573" title="This does what you think it does.">std::min</a>(__max, static_cast<size_t>(__end - __from)); }
<a name="l00502"></a>00502
<a name="l00503"></a>00503 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00504"></a>00504 <span class="comment">// 74. Garbled text for codecvt::do_max_length</span>
<a name="l00505"></a>00505 <span class="keyword">template</span><<span class="keyword">typename</span> _InternT, <span class="keyword">typename</span> _ExternT>
<a name="l00506"></a>00506 <span class="keywordtype">int</span>
<a name="l00507"></a>00507 codecvt<_InternT, _ExternT, encoding_state>::
<a name="l00508"></a>00508 do_max_length() <span class="keyword">const</span> throw()
<a name="l00509"></a>00509 { <span class="keywordflow">return</span> 1; }
<a name="l00510"></a>00510
<a name="l00511"></a>00511 _GLIBCXX_END_NAMESPACE_VERSION
<a name="l00512"></a>00512 } <span class="comment">// namespace</span>
<a name="l00513"></a>00513
<a name="l00514"></a>00514 <span class="preprocessor">#endif</span>
</pre></div></div>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="a00808.html">codecvt_specializations.h</a> </li>
<li class="footer">Generated by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </li>
</ul>
</div>
</body>
</html>
