# localename.cc

    00001 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
    00002 // Free Software Foundation, Inc.
    00003 //
    00004 // This file is part of the GNU ISO C++ Library.  This library is free
    00005 // software; you can redistribute it and/or modify it under the
    00006 // terms of the GNU General Public License as published by the
    00007 // Free Software Foundation; either version 2, or (at your option)
    00008 // any later version.
    00009
    00010 // This library is distributed in the hope that it will be useful,
    00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00013 // GNU General Public License for more details.
    00014
    00015 // You should have received a copy of the GNU General Public License along
    00016 // with this library; see the file COPYING.  If not, write to the Free
    00017 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    00018 // USA.
    00019
    00020 // As a special exception, you may use this file as part of a free software
    00021 // library without restriction.  Specifically, if other files instantiate
    00022 // templates or use macros or inline functions from this file, or you compile
    00023 // this file and link it with other files to produce an executable, this
    00024 // file does not by itself cause the resulting executable to be covered by
    00025 // the GNU General Public License.  This exception does not however
    00026 // invalidate any other reasons why the executable file might be covered by
    00027 // the GNU General Public License.
    00028
    00029 #include <clocale>
    00030 #include <cstring>
    00031 #include <locale>
    00032
    00033 namespace __gnu_cxx
    00034 {
    00035   using namespace std;
    00036
    00037   // Defined in globals.cc.
    00038   extern locale::facet** facet_vec;
    00039   extern char* facet_name[6 + _GLIBCPP_NUM_CATEGORIES];
    00040
    00041   extern std::ctype<char>           ctype_c;
    00042   extern std::collate<char>             collate_c;
    00043   extern numpunct<char>             numpunct_c;
    00044   extern num_get<char>              num_get_c;
    00045   extern num_put<char>              num_put_c;
    00046   extern codecvt<char, char, mbstate_t>     codecvt_c;
    00047   extern moneypunct<char, false>        moneypunct_fc;
    00048   extern moneypunct<char, true>         moneypunct_tc;
    00049   extern money_get<char>            money_get_c;
    00050   extern money_put<char>            money_put_c;
    00051   extern __timepunct<char>          timepunct_c;
    00052   extern time_get<char>             time_get_c;
    00053   extern time_put<char>             time_put_c;
    00054   extern std::messages<char>            messages_c;
    00055 #ifdef  _GLIBCPP_USE_WCHAR_T
    00056   extern std::ctype<wchar_t>            ctype_w;
    00057   extern std::collate<wchar_t>          collate_w;
    00058   extern numpunct<wchar_t>          numpunct_w;
    00059   extern num_get<wchar_t>           num_get_w;
    00060   extern num_put<wchar_t>           num_put_w;
    00061   extern codecvt<wchar_t, char, mbstate_t>  codecvt_w;
    00062   extern moneypunct<wchar_t, false>         moneypunct_fw;
    00063   extern moneypunct<wchar_t, true>      moneypunct_tw;
    00064   extern money_get<wchar_t>             money_get_w;
    00065   extern money_put<wchar_t>             money_put_w;
    00066   extern __timepunct<wchar_t>           timepunct_w;
    00067   extern time_get<wchar_t>          time_get_w;
    00068   extern time_put<wchar_t>          time_put_w;
    00069   extern std::messages<wchar_t>         messages_w;
    00070 #endif
    00071 } // namespace __gnu_cxx
    00072
    00073 namespace std
    00074 {
    00075   using namespace __gnu_cxx;
    00076
    00077   locale::_Impl::
    00078   ~_Impl() throw()
    00079   {
    00080     for (size_t __i = 0; __i < _M_facets_size; ++__i)
    00081       if (_M_facets[__i])
    00082     _M_facets[__i]->_M_remove_reference();
    00083     delete [] _M_facets;
    00084
    00085     for (size_t __i = 0;
    00086      __i < _S_categories_size + _S_extra_categories_size; ++__i)
    00087       delete [] _M_names[__i];
    00088   }
    00089
    00090   // Clone existing _Impl object.
    00091   locale::_Impl::
    00092   _Impl(const _Impl& __imp, size_t __refs)
    00093   : _M_references(__refs), _M_facets_size(__imp._M_facets_size) // XXX
    00094   {
    00095     try
    00096       {
    00097     _M_facets = new facet*[_M_facets_size];
    00098     for (size_t __i = 0; __i < _M_facets_size; ++__i)
    00099       _M_facets[__i] = 0;
    00100       }
    00101     catch(...)
    00102       {
    00103     delete [] _M_facets;
    00104     __throw_exception_again;
    00105       }
    00106     for (size_t __i = 0; __i < _M_facets_size; ++__i)
    00107       {
    00108     _M_facets[__i] = __imp._M_facets[__i];
    00109     if (_M_facets[__i])
    00110       _M_facets[__i]->_M_add_reference();
    00111       }
    00112     for (size_t __i = 0;
    00113      __i < _S_categories_size + _S_extra_categories_size; ++__i)
    00114       {
    00115     char* __new = new char[strlen(__imp._M_names[__i]) + 1];
    00116     strcpy(__new, __imp._M_names[__i]);
    00117     _M_names[__i] = __new;
    00118       }
    00119   }
    00120
    00121   // Construct named _Impl.
    00122   locale::_Impl::
    00123   _Impl(const char* __s, size_t __refs)
    00124   : _M_references(__refs), _M_facets_size(_GLIBCPP_NUM_FACETS)
    00125   {
    00126     // Initialize the underlying locale model, which also checks
    00127     // to see if the given name is valid.
    00128     __c_locale __cloc;
    00129     locale::facet::_S_create_c_locale(__cloc, __s);
    00130
    00131     try
    00132       {
    00133     _M_facets = new facet*[_M_facets_size];
    00134     for (size_t __i = 0; __i < _M_facets_size; ++__i)
    00135       _M_facets[__i] = 0;
    00136       }
    00137     catch(...)
    00138       {
    00139     delete [] _M_facets;
    00140     __throw_exception_again;
    00141       }
    00142
    00143     // Name all the categories.
    00144     if (!strchr(__s, ';'))
    00145       {
    00146     size_t __len = strlen(__s) + 1;
    00147     for (size_t __i = 0;
    00148          __i < _S_categories_size + _S_extra_categories_size; ++__i)
    00149       {
    00150         _M_names[__i] = new char[__len];
    00151         strcpy(_M_names[__i], __s);
    00152       }
    00153       }
    00154     else
    00155       {
    00156     char* __tmp = strdup(__s);
    00157     __tmp[strlen(__tmp)] = ';';
    00158     strtok(__tmp, "=;");
    00159     for (size_t __i = 0;
    00160          __i < _S_categories_size + _S_extra_categories_size - 1; ++__i)
    00161       {
    00162         char* __src = strtok(NULL, "=;");
    00163         char* __new = new char[strlen(__src) + 1];
    00164         strcpy(__new, __src);
    00165         _M_names[__i] = __new;
    00166         strtok(NULL, "=;");
    00167       }
    00168     char* __src = strtok(NULL, "=;");
    00169     char* __new = new char[strlen(__src) + 1];
    00170     strcpy(__new, __src);
    00171     _M_names[_S_categories_size + _S_extra_categories_size - 1] = __new;
    00172
    00173     free(__tmp);
    00174       }
    00175
    00176     // Construct all standard facets and add them to _M_facets.
    00177     _M_init_facet(new std::ctype<char>(__cloc, 0, false));
    00178     _M_init_facet(new codecvt<char, char, mbstate_t>(__cloc));
    00179     _M_init_facet(new numpunct<char>(__cloc));
    00180     _M_init_facet(new num_get<char>);
    00181     _M_init_facet(new num_put<char>);
    00182     _M_init_facet(new std::collate<char>(__cloc));
    00183     _M_init_facet(new moneypunct<char, false>(__cloc, __s));
    00184     _M_init_facet(new moneypunct<char, true>(__cloc, __s));
    00185     _M_init_facet(new money_get<char>);
    00186     _M_init_facet(new money_put<char>);
    00187     _M_init_facet(new __timepunct<char>(__cloc, __s));
    00188     _M_init_facet(new time_get<char>);
    00189     _M_init_facet(new time_put<char>);
    00190     _M_init_facet(new std::messages<char>(__cloc, __s));
    00191
    00192 #ifdef  _GLIBCPP_USE_WCHAR_T
    00193     _M_init_facet(new std::ctype<wchar_t>(__cloc));
    00194     _M_init_facet(new codecvt<wchar_t, char, mbstate_t>(__cloc));
    00195     _M_init_facet(new numpunct<wchar_t>(__cloc));
    00196     _M_init_facet(new num_get<wchar_t>);
    00197     _M_init_facet(new num_put<wchar_t>);
    00198     _M_init_facet(new std::collate<wchar_t>(__cloc));
    00199     _M_init_facet(new moneypunct<wchar_t, false>(__cloc, __s));
    00200     _M_init_facet(new moneypunct<wchar_t, true>(__cloc, __s));
    00201     _M_init_facet(new money_get<wchar_t>);
    00202     _M_init_facet(new money_put<wchar_t>);
    00203     _M_init_facet(new __timepunct<wchar_t>(__cloc, __s));
    00204     _M_init_facet(new time_get<wchar_t>);
    00205     _M_init_facet(new time_put<wchar_t>);
    00206     _M_init_facet(new std::messages<wchar_t>(__cloc, __s));
    00207 #endif
    00208     locale::facet::_S_destroy_c_locale(__cloc);
    00209   }
    00210
    00211   // Construct "C" _Impl.
    00212   locale::_Impl::
    00213   _Impl(facet**, size_t __refs, bool)
    00214   : _M_references(__refs), _M_facets_size(_GLIBCPP_NUM_FACETS)
    00215   {
    00216     // Initialize the underlying locale model.
    00217     locale::facet::_S_create_c_locale(locale::facet::_S_c_locale, "C");
    00218
    00219     _M_facets = new(&facet_vec) facet*[_M_facets_size];
    00220     for (size_t __i = 0; __i < _M_facets_size; ++__i)
    00221       _M_facets[__i] = 0;
    00222
    00223     // Name all the categories.
    00224     for (size_t __i = 0;
    00225      __i < _S_categories_size + _S_extra_categories_size; ++__i)
    00226       {
    00227     _M_names[__i]  = new (&facet_name[__i]) char[2];
    00228     strcpy(_M_names[__i], "C");
    00229       }
    00230
    00231     // This is needed as presently the C++ version of "C" locales
    00232     // != data in the underlying locale model for __timepunct,
    00233     // numpunct, and moneypunct. Also, the "C" locales must be
    00234     // constructed in a way such that they are pre-allocated.
    00235     // NB: Set locale::facets(ref) count to one so that each individual
    00236     // facet is not destroyed when the locale (and thus locale::_Impl) is
    00237     // destroyed.
    00238     _M_init_facet(new (&ctype_c) std::ctype<char>(0, false, 1));
    00239     _M_init_facet(new (&codecvt_c) codecvt<char, char, mbstate_t>(1));
    00240     _M_init_facet(new (&numpunct_c) numpunct<char>(1));
    00241     _M_init_facet(new (&num_get_c) num_get<char>(1));
    00242     _M_init_facet(new (&num_put_c) num_put<char>(1));
    00243     _M_init_facet(new (&collate_c) std::collate<char>(1));
    00244     _M_init_facet(new (&moneypunct_fc) moneypunct<char, false>(1));
    00245     _M_init_facet(new (&moneypunct_tc) moneypunct<char, true>(1));
    00246     _M_init_facet(new (&money_get_c) money_get<char>(1));
    00247     _M_init_facet(new (&money_put_c) money_put<char>(1));
    00248     _M_init_facet(new (&timepunct_c) __timepunct<char>(1));
    00249     _M_init_facet(new (&time_get_c) time_get<char>(1));
    00250     _M_init_facet(new (&time_put_c) time_put<char>(1));
    00251     _M_init_facet(new (&messages_c) std::messages<char>(1));
    00252 #ifdef  _GLIBCPP_USE_WCHAR_T
    00253     _M_init_facet(new (&ctype_w) std::ctype<wchar_t>(1));
    00254     _M_init_facet(new (&codecvt_w) codecvt<wchar_t, char, mbstate_t>(1));
    00255     _M_init_facet(new (&numpunct_w) numpunct<wchar_t>(1));
    00256     _M_init_facet(new (&num_get_w) num_get<wchar_t>(1));
    00257     _M_init_facet(new (&num_put_w) num_put<wchar_t>(1));
    00258     _M_init_facet(new (&collate_w) std::collate<wchar_t>(1));
    00259     _M_init_facet(new (&moneypunct_fw) moneypunct<wchar_t, false>(1));
    00260     _M_init_facet(new (&moneypunct_tw) moneypunct<wchar_t, true>(1));
    00261     _M_init_facet(new (&money_get_w) money_get<wchar_t>(1));
    00262     _M_init_facet(new (&money_put_w) money_put<wchar_t>(1));
    00263     _M_init_facet(new (&timepunct_w) __timepunct<wchar_t>(1));
    00264     _M_init_facet(new (&time_get_w) time_get<wchar_t>(1));
    00265     _M_init_facet(new (&time_put_w) time_put<wchar_t>(1));
    00266     _M_init_facet(new (&messages_w) std::messages<wchar_t>(1));
    00267 #endif
    00268   }
    00269
    00270   void
    00271   locale::_Impl::
    00272   _M_replace_categories(const _Impl* __imp, category __cat)
    00273   {
    00274     category __mask;
    00275     for (size_t __ix = 0; __ix < _S_categories_size; ++__ix)
    00276       {
    00277     __mask = 1 << __ix;
    00278     if (__mask & __cat)
    00279       {
    00280         // Need to replace entry in _M_facets with other locale's info.
    00281         _M_replace_category(__imp, _S_facet_categories[__ix]);
    00282         // If both have names, go ahead and mangle.
    00283         if (strcmp(_M_names[__ix], "*") != 0
    00284         && strcmp(__imp->_M_names[__ix], "*") != 0)
    00285           {
    00286         delete [] _M_names[__ix];
    00287         char* __new = new char[strlen(__imp->_M_names[__ix]) + 1];
    00288         strcpy(__new, __imp->_M_names[__ix]);
    00289         _M_names[__ix] = __new;
    00290           }
    00291       }
    00292       }
    00293   }
    00294
    00295   void
    00296   locale::_Impl::
    00297   _M_replace_category(const _Impl* __imp, const locale::id* const* __idpp)
    00298   {
    00299     for (; *__idpp; ++__idpp)
    00300       _M_replace_facet(__imp, *__idpp);
    00301   }
    00302
    00303   void
    00304   locale::_Impl::
    00305   _M_replace_facet(const _Impl* __imp, const locale::id* __idp)
    00306   {
    00307     size_t __index = __idp->_M_id();
    00308     if ((__index > (__imp->_M_facets_size - 1)) || !__imp->_M_facets[__index])
    00309       __throw_runtime_error("no locale facet");
    00310     _M_install_facet(__idp, __imp->_M_facets[__index]);
    00311   }
    00312
    00313   void
    00314   locale::_Impl::
    00315   _M_install_facet(const locale::id* __idp, facet* __fp)
    00316   {
    00317     if (__fp)
    00318       {
    00319     size_t __index = __idp->_M_id();
    00320
    00321     // Check size of facet vector to ensure adequate room.
    00322     if (__index > _M_facets_size - 1)
    00323       {
    00324         facet** __old = _M_facets;
    00325         facet** __new;
    00326         const size_t __new_size = __index + 4;
    00327         __new = new facet*[__new_size];
    00328         for (size_t __i = 0; __i < _M_facets_size; ++__i)
    00329           __new[__i] = _M_facets[__i];
    00330         for (size_t __i2 = _M_facets_size; __i2 < __new_size; ++__i2)
    00331           __new[__i2] = 0;
    00332
    00333         _M_facets_size = __new_size;
    00334         _M_facets = __new;
    00335         delete [] __old;
    00336       }
    00337
    00338     __fp->_M_add_reference();
    00339     facet*& __fpr = _M_facets[__index];
    00340     if (__fpr)
    00341       {
    00342         // Replacing an existing facet. Order matters.
    00343         __fpr->_M_remove_reference();
    00344         __fpr = __fp;
    00345       }
    00346     else
    00347       {
    00348         // Installing a newly created facet into an empty
    00349         // _M_facets container, say a newly-constructed,
    00350         // swanky-fresh _Impl.
    00351         _M_facets[__index] = __fp;
    00352       }
    00353       }
    00354   }
    00355 } // namespace std