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//
// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#define BOOST_LOCALE_SOURCE
#include <boost/config.hpp>
#ifdef BOOST_MSVC
# pragma warning(disable : 4996)
#endif
#include <locale>
#include <stdexcept>
#include <boost/locale/generator.hpp>
#include <boost/locale/conversion.hpp>
#include <boost/locale/encoding.hpp>
#include <vector>
#include "all_generator.hpp"
namespace boost {
namespace locale {
namespace impl_std {
template<typename CharType>
class std_converter : public converter<CharType>
{
public:
typedef CharType char_type;
typedef std::basic_string<char_type> string_type;
typedef std::ctype<char_type> ctype_type;
std_converter(std::locale const &base,size_t refs = 0) :
converter<CharType>(refs),
base_(base)
{
}
virtual string_type convert(converter_base::conversion_type how,char_type const *begin,char_type const *end,int /*flags*/ = 0) const
{
switch(how) {
case converter_base::upper_case:
case converter_base::lower_case:
case converter_base::case_folding:
{
ctype_type const &ct=std::use_facet<ctype_type>(base_);
size_t len = end - begin;
std::vector<char_type> res(len+1,0);
char_type *lbegin = &res[0];
std::copy(begin,end,lbegin);
if(how == converter_base::upper_case)
ct.toupper(lbegin,lbegin+len);
else
ct.tolower(lbegin,lbegin+len);
return string_type(lbegin,len);
}
default:
return string_type(begin,end-begin);
}
}
private:
std::locale base_;
};
class utf8_converter : public converter<char> {
public:
typedef std::ctype<char> ctype_type;
typedef std::ctype<wchar_t> wctype_type;
utf8_converter(std::locale const &base,size_t refs = 0) :
converter<char>(refs),
base_(base)
{
}
virtual std::string convert(converter_base::conversion_type how,char const *begin,char const *end,int /*flags*/ = 0) const
{
switch(how) {
case upper_case:
case lower_case:
case case_folding:
{
std::wstring tmp = conv::to_utf<wchar_t>(begin,end,"UTF-8");
wctype_type const &ct=std::use_facet<wctype_type>(base_);
size_t len = tmp.size();
std::vector<wchar_t> res(len+1,0);
wchar_t *lbegin = &res[0];
std::copy(tmp.c_str(),tmp.c_str()+len,lbegin);
if(how == upper_case)
ct.toupper(lbegin,lbegin+len);
else
ct.tolower(lbegin,lbegin+len);
return conv::from_utf<wchar_t>(lbegin,lbegin+len,"UTF-8");
}
default:
return std::string(begin,end-begin);
}
}
private:
std::locale base_;
};
std::locale create_convert( std::locale const &in,
std::string const &locale_name,
character_facet_type type,
utf8_support utf)
{
switch(type) {
case char_facet:
{
if(utf == utf8_native_with_wide || utf == utf8_from_wide) {
std::locale base(std::locale::classic(),new std::ctype_byname<wchar_t>(locale_name.c_str()));
return std::locale(in,new utf8_converter(base));
}
std::locale base(std::locale::classic(),new std::ctype_byname<char>(locale_name.c_str()));
return std::locale(in,new std_converter<char>(base));
}
case wchar_t_facet:
{
std::locale base(std::locale::classic(),new std::ctype_byname<wchar_t>(locale_name.c_str()));
return std::locale(in,new std_converter<wchar_t>(base));
}
#ifdef BOOST_LOCALE_ENABLE_CHAR16_T
case char16_t_facet:
{
std::locale base(std::locale::classic(),new std::ctype_byname<char16_t>(locale_name.c_str()));
return std::locale(in,new std_converter<char16_t>(base));
}
#endif
#ifdef BOOST_LOCALE_ENABLE_CHAR32_T
case char32_t_facet:
{
std::locale base(std::locale::classic(),new std::ctype_byname<char32_t>(locale_name.c_str()));
return std::locale(in,new std_converter<char32_t>(base));
}
#endif
default:
return in;
}
}
} // namespace impl_std
} // locale
} // boost
// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
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