// std::numpunct implementation details, GNU version -*- C++ -*-
// Copyright (C) 2001-2020 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// .
//
// ISO C++ 14882: 22.2.3.1.2 numpunct virtual functions
//
// Written by Benjamin Kosnik
#include
#include
#include
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
extern char __narrow_multibyte_chars(const char* s, __locale_t cloc);
// This file might be compiled twice, but we only want to define this once.
#if ! _GLIBCXX_USE_CXX11_ABI
char
__narrow_multibyte_chars(const char* s, __locale_t cloc)
{
const char* codeset = __nl_langinfo_l(CODESET, cloc);
if (!strcmp(codeset, "UTF-8"))
{
// optimize for some known cases
if (!strcmp(s, "\u202F")) // NARROW NO-BREAK SPACE
return ' ';
if (!strcmp(s, "\u2019")) // RIGHT SINGLE QUOTATION MARK
return '\'';
if (!strcmp(s, "\u066C")) // ARABIC THOUSANDS SEPARATOR
return '\'';
}
iconv_t cd = iconv_open("ASCII//TRANSLIT", codeset);
if (cd != (iconv_t)-1)
{
char c1;
size_t inbytesleft = strlen(s);
size_t outbytesleft = 1;
char* inbuf = const_cast(s);
char* outbuf = &c1;
size_t n = iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
iconv_close(cd);
if (n != (size_t)-1)
{
cd = iconv_open(codeset, "ASCII");
if (cd != (iconv_t)-1)
{
char c2;
inbuf = &c1;
inbytesleft = 1;
outbuf = &c2;
outbytesleft = 1;
n = iconv(cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
iconv_close(cd);
if (n != (size_t)-1)
return c2;
}
}
}
return '\0';
}
#endif
template<>
void
numpunct::_M_initialize_numpunct(__c_locale __cloc)
{
if (!_M_data)
_M_data = new __numpunct_cache;
if (!__cloc)
{
// "C" locale
_M_data->_M_grouping = "";
_M_data->_M_grouping_size = 0;
_M_data->_M_use_grouping = false;
_M_data->_M_decimal_point = '.';
_M_data->_M_thousands_sep = ',';
for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
_M_data->_M_atoms_out[__i] = __num_base::_S_atoms_out[__i];
for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
_M_data->_M_atoms_in[__j] = __num_base::_S_atoms_in[__j];
}
else
{
// Named locale.
_M_data->_M_decimal_point = *(__nl_langinfo_l(DECIMAL_POINT,
__cloc));
const char* thousands_sep = __nl_langinfo_l(THOUSANDS_SEP, __cloc);
if (thousands_sep[0] != '\0' && thousands_sep[1] != '\0')
_M_data->_M_thousands_sep = __narrow_multibyte_chars(thousands_sep,
__cloc);
else
_M_data->_M_thousands_sep = *thousands_sep;
// Check for NULL, which implies no grouping.
if (_M_data->_M_thousands_sep == '\0')
{
// Like in "C" locale.
_M_data->_M_grouping = "";
_M_data->_M_grouping_size = 0;
_M_data->_M_use_grouping = false;
_M_data->_M_thousands_sep = ',';
}
else
{
const char* __src = __nl_langinfo_l(GROUPING, __cloc);
const size_t __len = strlen(__src);
if (__len)
{
__try
{
char* __dst = new char[__len + 1];
memcpy(__dst, __src, __len + 1);
_M_data->_M_grouping = __dst;
}
__catch(...)
{
delete _M_data;
_M_data = 0;
__throw_exception_again;
}
}
else
{
_M_data->_M_grouping = "";
_M_data->_M_use_grouping = false;
}
_M_data->_M_grouping_size = __len;
}
}
// NB: There is no way to extact this info from posix locales.
// _M_truename = __nl_langinfo_l(YESSTR, __cloc);
_M_data->_M_truename = "true";
_M_data->_M_truename_size = 4;
// _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
_M_data->_M_falsename = "false";
_M_data->_M_falsename_size = 5;
}
template<>
numpunct::~numpunct()
{
if (_M_data->_M_grouping_size)
delete [] _M_data->_M_grouping;
delete _M_data;
}
#ifdef _GLIBCXX_USE_WCHAR_T
template<>
void
numpunct::_M_initialize_numpunct(__c_locale __cloc)
{
if (!_M_data)
_M_data = new __numpunct_cache;
if (!__cloc)
{
// "C" locale
_M_data->_M_grouping = "";
_M_data->_M_grouping_size = 0;
_M_data->_M_use_grouping = false;
_M_data->_M_decimal_point = L'.';
_M_data->_M_thousands_sep = L',';
// Use ctype::widen code without the facet...
for (size_t __i = 0; __i < __num_base::_S_oend; ++__i)
_M_data->_M_atoms_out[__i] =
static_cast(__num_base::_S_atoms_out[__i]);
for (size_t __j = 0; __j < __num_base::_S_iend; ++__j)
_M_data->_M_atoms_in[__j] =
static_cast(__num_base::_S_atoms_in[__j]);
}
else
{
// Named locale.
// NB: In the GNU model wchar_t is always 32 bit wide.
union { char *__s; wchar_t __w; } __u;
__u.__s = __nl_langinfo_l(_NL_NUMERIC_DECIMAL_POINT_WC, __cloc);
_M_data->_M_decimal_point = __u.__w;
__u.__s = __nl_langinfo_l(_NL_NUMERIC_THOUSANDS_SEP_WC, __cloc);
_M_data->_M_thousands_sep = __u.__w;
// Check for NULL, which implies no grouping.
if (_M_data->_M_thousands_sep == L'\0')
{
// Like in "C" locale.
_M_data->_M_grouping = "";
_M_data->_M_grouping_size = 0;
_M_data->_M_use_grouping = false;
_M_data->_M_thousands_sep = L',';
}
else
{
const char* __src = __nl_langinfo_l(GROUPING, __cloc);
const size_t __len = strlen(__src);
if (__len)
{
__try
{
char* __dst = new char[__len + 1];
memcpy(__dst, __src, __len + 1);
_M_data->_M_grouping = __dst;
}
__catch(...)
{
delete _M_data;
_M_data = 0;
__throw_exception_again;
}
}
else
{
_M_data->_M_grouping = "";
_M_data->_M_use_grouping = false;
}
_M_data->_M_grouping_size = __len;
}
}
// NB: There is no way to extact this info from posix locales.
// _M_truename = __nl_langinfo_l(YESSTR, __cloc);
_M_data->_M_truename = L"true";
_M_data->_M_truename_size = 4;
// _M_falsename = __nl_langinfo_l(NOSTR, __cloc);
_M_data->_M_falsename = L"false";
_M_data->_M_falsename_size = 5;
}
template<>
numpunct::~numpunct()
{
if (_M_data->_M_grouping_size)
delete [] _M_data->_M_grouping;
delete _M_data;
}
#endif
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace