1// Wrapper for underlying C-language localization -*- C++ -*-
2
3// Copyright (C) 2001-2014 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 3, 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// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file bits/c++locale.h
26 *  This is an internal header file, included by other library headers.
27 *  Do not attempt to use it directly. @headername{locale}
28 */
29
30//
31// ISO C++ 14882: 22.8  Standard locale categories.
32//
33
34// Written by Benjamin Kosnik <bkoz@redhat.com>
35
36#ifndef _GLIBCXX_CXX_LOCALE_H
37#define _GLIBCXX_CXX_LOCALE_H 1
38
39#pragma GCC system_header
40
41#include <clocale>
42
43#define _GLIBCXX_NUM_CATEGORIES 0
44
45namespace std _GLIBCXX_VISIBILITY(default)
46{
47_GLIBCXX_BEGIN_NAMESPACE_VERSION
48
49  typedef int*			__c_locale;
50
51  // Convert numeric value of type double and long double to string and
52  // return length of string.  If vsnprintf is available use it, otherwise
53  // fall back to the unsafe vsprintf which, in general, can be dangerous
54  // and should be avoided.
55  inline int
56  __convert_from_v(const __c_locale&, char* __out,
57		   const int __size __attribute__((__unused__)),
58		   const char* __fmt, ...)
59  {
60    char* __old = std::setlocale(LC_NUMERIC, 0);
61    char* __sav = 0;
62#if defined (__ANDROID__)
63    if (__old)
64      {
65#endif
66        if (__builtin_strcmp(__old, "C"))
67          {
68            const size_t __len = __builtin_strlen(__old) + 1;
69            __sav = new char[__len];
70            __builtin_memcpy(__sav, __old, __len);
71            std::setlocale(LC_NUMERIC, "C");
72          }
73#if defined (__ANDROID__)
74      }
75#endif
76
77    __builtin_va_list __args;
78    __builtin_va_start(__args, __fmt);
79
80#ifdef _GLIBCXX_USE_C99
81    const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
82#else
83    const int __ret = __builtin_vsprintf(__out, __fmt, __args);
84#endif
85
86    __builtin_va_end(__args);
87
88    if (__sav)
89      {
90	std::setlocale(LC_NUMERIC, __sav);
91	delete [] __sav;
92      }
93    return __ret;
94  }
95
96_GLIBCXX_END_NAMESPACE_VERSION
97} // namespace
98
99#endif
100