# 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 }