c++locale.h

00001 // Wrapper for underlying C-language localization -*- C++ -*-
00002 
00003 // Copyright (C) 2001, 2002 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 2, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // You should have received a copy of the GNU General Public License along
00017 // with this library; see the file COPYING.  If not, write to the Free
00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00019 // USA.
00020 
00021 // As a special exception, you may use this file as part of a free software
00022 // library without restriction.  Specifically, if other files instantiate
00023 // templates or use macros or inline functions from this file, or you compile
00024 // this file and link it with other files to produce an executable, this
00025 // file does not by itself cause the resulting executable to be covered by
00026 // the GNU General Public License.  This exception does not however
00027 // invalidate any other reasons why the executable file might be covered by
00028 // the GNU General Public License.
00029 
00030 //
00031 // ISO C++ 14882: 22.8  Standard locale categories.
00032 //
00033 
00034 // Written by Benjamin Kosnik <bkoz@redhat.com>
00035 
00036 #include <clocale>
00037 #include <langinfo.h>       // For codecvt
00038 #include <iconv.h>      // For codecvt using iconv, iconv_t
00039 #include <libintl.h>        // For messages
00040 
00041 #define _GLIBCPP_C_LOCALE_GNU 1
00042 
00043 #define _GLIBCPP_NUM_CATEGORIES 6
00044 
00045 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
00046 namespace __gnu_cxx
00047 {
00048   extern "C" __typeof(uselocale) __uselocale;
00049 }
00050 #endif
00051 
00052 namespace std
00053 {
00054   typedef __locale_t        __c_locale;
00055 
00056   template<typename _Tv>
00057     int
00058     __convert_from_v(char* __out, const int __size, const char* __fmt,
00059 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
00060              _Tv __v, const __c_locale& __cloc, int __prec = -1)
00061     {
00062       __c_locale __old = __gnu_cxx::__uselocale(__cloc);
00063 #else
00064              _Tv __v, const __c_locale&, int __prec = -1)
00065     {
00066       char* __old = setlocale(LC_ALL, NULL);
00067       char* __sav = static_cast<char*>(malloc(strlen(__old) + 1));
00068       if (__sav)
00069         strcpy(__sav, __old);
00070       setlocale(LC_ALL, "C");
00071 #endif
00072 
00073       int __ret;
00074 #ifdef _GLIBCPP_USE_C99
00075       if (__prec >= 0)
00076         __ret = snprintf(__out, __size, __fmt, __prec, __v);
00077       else
00078         __ret = snprintf(__out, __size, __fmt, __v);
00079 #else
00080       if (__prec >= 0)
00081         __ret = sprintf(__out, __fmt, __prec, __v);
00082       else
00083         __ret = sprintf(__out, __fmt, __v);
00084 #endif
00085 
00086 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
00087       __gnu_cxx::__uselocale(__old);
00088 #else
00089       setlocale(LC_ALL, __sav);
00090       free(__sav);
00091 #endif
00092       return __ret;
00093     }
00094 }

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