1// localization implementation details, DragonFly version -*- C++ -*-
2
3// Copyright (C) 2001-2022 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// Modified for DragonFly by John Marino <gnugcc@marino.st>
36// Modified for NetBSD by Christos Zoulas <christos@zoulas.com> and
37// matthew green <mrg@eterna.com.au>
38
39#ifndef _GLIBCXX_CXX_LOCALE_H
40#define _GLIBCXX_CXX_LOCALE_H 1
41
42#pragma GCC system_header
43
44#include <clocale>
45#ifndef __NetBSD__
46#include <xlocale.h>
47#endif
48
49#define _GLIBCXX_NUM_CATEGORIES 0
50
51namespace std _GLIBCXX_VISIBILITY(default)
52{
53_GLIBCXX_BEGIN_NAMESPACE_VERSION
54
55  typedef int*			__c_locale;
56
57#ifndef __NetBSD__
58  // Convert numeric value of type double and long double to string and
59  // return length of string.  If vsnprintf is available use it, otherwise
60  // fall back to the unsafe vsprintf which, in general, can be dangerous
61  // and should be avoided.
62  inline int
63  __convert_from_v(const __c_locale& __cloc, char* __out,
64		   const int __size __attribute__ ((__unused__)),
65		   const char* __fmt, ...)
66  {
67    __c_locale __old = (__c_locale)uselocale((locale_t)__cloc);
68
69    __builtin_va_list __args;
70    __builtin_va_start(__args, __fmt);
71
72#if _GLIBCXX_USE_C99_STDIO
73    const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
74#else
75    const int __ret = __builtin_vsprintf(__out, __fmt, __args);
76#endif
77
78    __builtin_va_end(__args);
79
80    uselocale((locale_t)__old);
81    return __ret;
82  }
83#else
84  // NetBSD backend requires vasprintf_l() which may not be visible in
85  // all complation environments (eg, _XOPEN_SOURCE=600) so the backend
86  // lives in the library code, instead of this header.
87  int
88  __convert_from_v(const __c_locale& __cloc, char* __out,
89		   const int __size __attribute__ ((__unused__)),
90		   const char* __fmt, ...);
91#endif
92
93_GLIBCXX_END_NAMESPACE_VERSION
94} // namespace
95
96#endif
97