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<a href="a01121.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Versatile string utility -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010</span>
<a name="l00004"></a>00004 <span class="comment">// Free Software Foundation, Inc.</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span>
<a name="l00007"></a>00007 <span class="comment">// software; you can redistribute it and/or modify it under the</span>
<a name="l00008"></a>00008 <span class="comment">// terms of the GNU General Public License as published by the</span>
<a name="l00009"></a>00009 <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00010"></a>00010 <span class="comment">// any later version.</span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00015"></a>00015 <span class="comment">// GNU General Public License for more details.</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00018"></a>00018 <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00019"></a>00019 <span class="comment">// 3.1, as published by the Free Software Foundation.</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="comment">// You should have received a copy of the GNU General Public License and</span>
<a name="l00022"></a>00022 <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00023"></a>00023 <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span>
<a name="l00024"></a>00024 <span class="comment">// <http://www.gnu.org/licenses/>.</span>
<a name="l00025"></a>00025 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment">/** @file ext/vstring_util.h</span>
<a name="l00027"></a>00027 <span class="comment"> * This is an internal header file, included by other library headers.</span>
<a name="l00028"></a>00028 <span class="comment"> * Do not attempt to use it directly. @headername{ext/vstring.h}</span>
<a name="l00029"></a>00029 <span class="comment"> */</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#ifndef _VSTRING_UTIL_H</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define _VSTRING_UTIL_H 1</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#pragma GCC system_header</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <<a class="code" href="a01120.html">ext/vstring_fwd.h</a>></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <<a class="code" href="a00851.html">debug/debug.h</a>></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <<a class="code" href="a01050.html">bits/stl_function.h</a>></span> <span class="comment">// For less</span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <<a class="code" href="a00883.html">bits/functexcept.h</a>></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <<a class="code" href="a00932.html">bits/localefwd.h</a>></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <<a class="code" href="a00969.html">bits/ostream_insert.h</a>></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <<a class="code" href="a01052.html">bits/stl_iterator.h</a>></span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <<a class="code" href="a00962.html">ext/numeric_traits.h</a>></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <<a class="code" href="a00946.html">bits/move.h</a>></span>
<a name="l00045"></a>00045 <span class="preprocessor">#include <<a class="code" href="a01001.html">bits/range_access.h</a>></span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keyword">namespace </span>__gnu_cxx _GLIBCXX_VISIBILITY(default)
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 _GLIBCXX_BEGIN_NAMESPACE_VERSION
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">template</span><<span class="keyword">typename</span> _CharT, <span class="keyword">typename</span> _Traits, <span class="keyword">typename</span> _Alloc>
<a name="l00052"></a>00052 <span class="keyword">struct </span>__vstring_utility
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keyword">typedef</span> <span class="keyword">typename</span> _Alloc::template rebind<_CharT>::other _CharT_alloc_type;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keyword">typedef</span> _Traits traits_type;
<a name="l00057"></a>00057 <span class="keyword">typedef</span> <span class="keyword">typename</span> _Traits::char_type value_type;
<a name="l00058"></a>00058 <span class="keyword">typedef</span> <span class="keyword">typename</span> _CharT_alloc_type::size_type size_type;
<a name="l00059"></a>00059 <span class="keyword">typedef</span> <span class="keyword">typename</span> _CharT_alloc_type::difference_type difference_type;
<a name="l00060"></a>00060 <span class="keyword">typedef</span> <span class="keyword">typename</span> _CharT_alloc_type::pointer pointer;
<a name="l00061"></a>00061 <span class="keyword">typedef</span> <span class="keyword">typename</span> _CharT_alloc_type::const_pointer const_pointer;
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// For __sso_string.</span>
<a name="l00064"></a>00064 <span class="keyword">typedef</span> __gnu_cxx::
<a name="l00065"></a>00065 __normal_iterator<pointer, <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje...">__gnu_cxx::</a>
<a name="l00066"></a>00066 <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje..."> __versa_string</a><_CharT, _Traits, _Alloc,
<a name="l00067"></a>00067 __sso_string_base> >
<a name="l00068"></a>00068 __sso_iterator;
<a name="l00069"></a>00069 <span class="keyword">typedef</span> __gnu_cxx::
<a name="l00070"></a>00070 __normal_iterator<const_pointer, <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje...">__gnu_cxx::</a>
<a name="l00071"></a>00071 <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje..."> __versa_string</a><_CharT, _Traits, _Alloc,
<a name="l00072"></a>00072 __sso_string_base> >
<a name="l00073"></a>00073 __const_sso_iterator;
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="comment">// For __rc_string.</span>
<a name="l00076"></a>00076 <span class="keyword">typedef</span> __gnu_cxx::
<a name="l00077"></a>00077 __normal_iterator<pointer, <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje...">__gnu_cxx::</a>
<a name="l00078"></a>00078 <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje..."> __versa_string</a><_CharT, _Traits, _Alloc,
<a name="l00079"></a>00079 __rc_string_base> >
<a name="l00080"></a>00080 __rc_iterator;
<a name="l00081"></a>00081 <span class="keyword">typedef</span> __gnu_cxx::
<a name="l00082"></a>00082 __normal_iterator<const_pointer, <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje...">__gnu_cxx::</a>
<a name="l00083"></a>00083 <a class="code" href="a00019.html" title="Template class __versa_string.Data structure managing sequences of characters and character-like obje..."> __versa_string</a><_CharT, _Traits, _Alloc,
<a name="l00084"></a>00084 __rc_string_base> >
<a name="l00085"></a>00085 __const_rc_iterator;
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="comment">// NB: When the allocator is empty, deriving from it saves space</span>
<a name="l00088"></a>00088 <span class="comment">// (http://www.cantrip.org/emptyopt.html).</span>
<a name="l00089"></a>00089 <span class="keyword">template</span><<span class="keyword">typename</span> _Alloc1>
<a name="l00090"></a>00090 <span class="keyword">struct </span>_Alloc_hider
<a name="l00091"></a>00091 : <span class="keyword">public</span> _Alloc1
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 _Alloc_hider(_CharT* __ptr)
<a name="l00094"></a>00094 : _Alloc1(), _M_p(__ptr) { }
<a name="l00095"></a>00095
<a name="l00096"></a>00096 _Alloc_hider(<span class="keyword">const</span> _Alloc1& __a, _CharT* __ptr)
<a name="l00097"></a>00097 : _Alloc1(__a), _M_p(__ptr) { }
<a name="l00098"></a>00098
<a name="l00099"></a>00099 _CharT* _M_p; <span class="comment">// The actual data.</span>
<a name="l00100"></a>00100 };
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">// When __n = 1 way faster than the general multichar</span>
<a name="l00103"></a>00103 <span class="comment">// traits_type::copy/move/assign.</span>
<a name="l00104"></a>00104 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00105"></a>00105 _S_copy(_CharT* __d, <span class="keyword">const</span> _CharT* __s, size_type __n)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 <span class="keywordflow">if</span> (__n == 1)
<a name="l00108"></a>00108 traits_type::assign(*__d, *__s);
<a name="l00109"></a>00109 <span class="keywordflow">else</span>
<a name="l00110"></a>00110 traits_type::copy(__d, __s, __n);
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00114"></a>00114 _S_move(_CharT* __d, <span class="keyword">const</span> _CharT* __s, size_type __n)
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (__n == 1)
<a name="l00117"></a>00117 traits_type::assign(*__d, *__s);
<a name="l00118"></a>00118 <span class="keywordflow">else</span>
<a name="l00119"></a>00119 traits_type::move(__d, __s, __n);
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00123"></a>00123 _S_assign(_CharT* __d, size_type __n, _CharT __c)
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (__n == 1)
<a name="l00126"></a>00126 traits_type::assign(*__d, __c);
<a name="l00127"></a>00127 <span class="keywordflow">else</span>
<a name="l00128"></a>00128 traits_type::assign(__d, __n, __c);
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// _S_copy_chars is a separate template to permit specialization</span>
<a name="l00132"></a>00132 <span class="comment">// to optimize for the common case of pointers as iterators.</span>
<a name="l00133"></a>00133 <span class="keyword">template</span><<span class="keyword">typename</span> _Iterator>
<a name="l00134"></a>00134 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00135"></a>00135 _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 <span class="keywordflow">for</span> (; __k1 != __k2; ++__k1, ++__p)
<a name="l00138"></a>00138 traits_type::assign(*__p, *__k1); <span class="comment">// These types are off.</span>
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00142"></a>00142 _S_copy_chars(_CharT* __p, __sso_iterator __k1, __sso_iterator __k2)
<a name="l00143"></a>00143 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00146"></a>00146 _S_copy_chars(_CharT* __p, __const_sso_iterator __k1,
<a name="l00147"></a>00147 __const_sso_iterator __k2)
<a name="l00148"></a>00148 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00151"></a>00151 _S_copy_chars(_CharT* __p, __rc_iterator __k1, __rc_iterator __k2)
<a name="l00152"></a>00152 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00155"></a>00155 _S_copy_chars(_CharT* __p, __const_rc_iterator __k1,
<a name="l00156"></a>00156 __const_rc_iterator __k2)
<a name="l00157"></a>00157 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00160"></a>00160 _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
<a name="l00161"></a>00161 { _S_copy(__p, __k1, __k2 - __k1); }
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00164"></a>00164 _S_copy_chars(_CharT* __p, <span class="keyword">const</span> _CharT* __k1, <span class="keyword">const</span> _CharT* __k2)
<a name="l00165"></a>00165 { _S_copy(__p, __k1, __k2 - __k1); }
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00168"></a>00168 _S_compare(size_type __n1, size_type __n2)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 <span class="keyword">const</span> difference_type __d = difference_type(__n1 - __n2);
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keywordflow">if</span> (__d > __numeric_traits_integer<int>::__max)
<a name="l00173"></a>00173 <span class="keywordflow">return</span> __numeric_traits_integer<int>::__max;
<a name="l00174"></a>00174 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (__d < __numeric_traits_integer<int>::__min)
<a name="l00175"></a>00175 <span class="keywordflow">return</span> __numeric_traits_integer<int>::__min;
<a name="l00176"></a>00176 <span class="keywordflow">else</span>
<a name="l00177"></a>00177 <span class="keywordflow">return</span> int(__d);
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179 };
<a name="l00180"></a>00180
<a name="l00181"></a>00181 _GLIBCXX_END_NAMESPACE_VERSION
<a name="l00182"></a>00182 } <span class="comment">// namespace</span>
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="preprocessor">#endif </span><span class="comment">/* _VSTRING_UTIL_H */</span>
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