c_locale.h revision 103447 
1// Wrapper for underlying C-language localization -*- C++ -*-
2
3// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30//
31// ISO C++ 14882: 22.8  Standard locale categories.
32//
33
34// Written by Benjamin Kosnik <bkoz@redhat.com>
35
36#include <clocale>
37
38namespace std
39{
40  typedef int*			__c_locale;
41
42  template<typename _Tv>
43    int
44    __convert_from_v(char* __out, const int __size, const char* __fmt,
45		     _Tv __v, const __c_locale&, int __prec = -1)
46    {
47      char* __old = setlocale(LC_ALL, NULL);
48      char* __sav = static_cast<char*>(malloc(strlen(__old) + 1));
49      if (__sav)
50        strcpy(__sav, __old);
51      setlocale(LC_ALL, "C");
52
53      int __ret;
54#ifdef _GLIBCPP_USE_C99
55      if (__prec >= 0)
56        __ret = snprintf(__out, __size, __fmt, __prec, __v);
57      else
58        __ret = snprintf(__out, __size, __fmt, __v);
59#else
60      if (__prec >= 0)
61        __ret = sprintf(__out, __fmt, __prec, __v);
62      else
63        __ret = sprintf(__out, __fmt, __v);
64#endif
65      setlocale(LC_ALL, __sav);
66      free(__sav);
67      return __ret;
68    }
69}
70