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//
// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
// Copyright (c) 2022-2025 Alexander Grund
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/locale/encoding.hpp>
#include "../util/make_std_unique.hpp"
#if BOOST_LOCALE_USE_WIN32_API
# define BOOST_LOCALE_WITH_WCONV
#endif
#ifdef BOOST_LOCALE_WITH_ICONV
# include "iconv_converter.hpp"
#endif
#ifdef BOOST_LOCALE_WITH_ICU
# include "uconv_converter.hpp"
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
# include "wconv_converter.hpp"
#endif
namespace boost { namespace locale { namespace conv {
std::string between(const char* begin,
const char* end,
const std::string& to_charset,
const std::string& from_charset,
method_type how)
{
#ifdef BOOST_LOCALE_WITH_ICONV
{
impl::iconv_between cvt;
if(cvt.open(to_charset, from_charset, how))
return cvt.convert(begin, end);
}
#endif
#ifdef BOOST_LOCALE_WITH_ICU
{
impl::uconv_between cvt;
if(cvt.open(to_charset, from_charset, how))
return cvt.convert(begin, end);
}
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
{
impl::wconv_between cvt;
if(cvt.open(to_charset, from_charset, how))
return cvt.convert(begin, end);
}
#endif
throw invalid_charset_error(std::string(to_charset) + " or " + from_charset);
}
template<typename CharType>
std::basic_string<CharType> to_utf(const char* begin, const char* end, const std::string& charset, method_type how)
{
#ifdef BOOST_LOCALE_WITH_ICONV
{
impl::iconv_to_utf<CharType> cvt;
if(cvt.open(charset, how))
return cvt.convert(begin, end);
}
#endif
#ifdef BOOST_LOCALE_WITH_ICU
{
impl::uconv_to_utf<CharType> cvt;
if(cvt.open(charset, how))
return cvt.convert(begin, end);
}
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
{
impl::wconv_to_utf<CharType> cvt;
if(cvt.open(charset, how))
return cvt.convert(begin, end);
}
#endif
throw invalid_charset_error(charset);
}
template<typename CharType>
std::string from_utf(const CharType* begin, const CharType* end, const std::string& charset, method_type how)
{
#ifdef BOOST_LOCALE_WITH_ICONV
{
impl::iconv_from_utf<CharType> cvt;
if(cvt.open(charset, how))
return cvt.convert(begin, end);
}
#endif
#ifdef BOOST_LOCALE_WITH_ICU
{
impl::uconv_from_utf<CharType> cvt;
if(cvt.open(charset, how))
return cvt.convert(begin, end);
}
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
{
impl::wconv_from_utf<CharType> cvt;
if(cvt.open(charset, how))
return cvt.convert(begin, end);
}
#endif
throw invalid_charset_error(charset);
}
namespace detail {
template<class T>
static std::unique_ptr<T> move_to_ptr(T& c)
{
return make_std_unique<T>(std::move(c));
}
template<typename Char>
std::unique_ptr<utf_encoder<Char>>
make_utf_encoder(const std::string& charset, method_type how, conv_backend impl)
{
#ifdef BOOST_LOCALE_WITH_ICONV
if(impl == conv_backend::Default || impl == conv_backend::IConv) {
impl::iconv_to_utf<Char> cvt;
if(cvt.open(charset, how))
return move_to_ptr(cvt);
}
#endif
#ifdef BOOST_LOCALE_WITH_ICU
if(impl == conv_backend::Default || impl == conv_backend::ICU) {
impl::uconv_to_utf<Char> cvt;
if(cvt.open(charset, how))
return move_to_ptr(cvt);
}
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
if(impl == conv_backend::Default || impl == conv_backend::WinAPI) {
impl::wconv_to_utf<Char> cvt;
if(cvt.open(charset, how))
return move_to_ptr(cvt);
}
#endif
throw invalid_charset_error(charset);
}
template<typename Char>
std::unique_ptr<utf_decoder<Char>>
make_utf_decoder(const std::string& charset, method_type how, conv_backend impl)
{
#ifdef BOOST_LOCALE_WITH_ICONV
if(impl == conv_backend::Default || impl == conv_backend::IConv) {
impl::iconv_from_utf<Char> cvt;
if(cvt.open(charset, how))
return move_to_ptr(cvt);
}
#endif
#ifdef BOOST_LOCALE_WITH_ICU
if(impl == conv_backend::Default || impl == conv_backend::ICU) {
impl::uconv_from_utf<Char> cvt;
if(cvt.open(charset, how))
return move_to_ptr(cvt);
}
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
if(impl == conv_backend::Default || impl == conv_backend::WinAPI) {
impl::wconv_from_utf<Char> cvt;
if(cvt.open(charset, how))
return move_to_ptr(cvt);
}
#endif
throw invalid_charset_error(charset);
}
std::unique_ptr<narrow_converter> make_narrow_converter(const std::string& src_encoding,
const std::string& target_encoding,
method_type how,
conv_backend impl)
{
#ifdef BOOST_LOCALE_WITH_ICONV
if(impl == conv_backend::Default || impl == conv_backend::IConv) {
impl::iconv_between cvt;
if(cvt.open(target_encoding, src_encoding, how))
return move_to_ptr(cvt);
}
#endif
#ifdef BOOST_LOCALE_WITH_ICU
if(impl == conv_backend::Default || impl == conv_backend::ICU) {
impl::uconv_between cvt;
if(cvt.open(target_encoding, src_encoding, how))
return move_to_ptr(cvt);
}
#endif
#ifdef BOOST_LOCALE_WITH_WCONV
if(impl == conv_backend::Default || impl == conv_backend::WinAPI) {
impl::wconv_between cvt;
if(cvt.open(target_encoding, src_encoding, how))
return move_to_ptr(cvt);
}
#endif
throw invalid_charset_error(std::string(src_encoding) + " or " + target_encoding);
}
} // namespace detail
#define BOOST_LOCALE_INSTANTIATE(CHARTYPE) \
namespace detail { \
template class charset_converter<char, CHARTYPE>; \
template BOOST_LOCALE_DECL std::unique_ptr<utf_encoder<CHARTYPE>> \
make_utf_encoder(const std::string& charset, method_type how, conv_backend impl); \
template BOOST_LOCALE_DECL std::unique_ptr<utf_decoder<CHARTYPE>> \
make_utf_decoder(const std::string& charset, method_type how, conv_backend impl); \
} \
template BOOST_LOCALE_DECL std::basic_string<CHARTYPE> to_utf<CHARTYPE>(const char* begin, \
const char* end, \
const std::string& charset, \
method_type how); \
template BOOST_LOCALE_DECL std::string from_utf<CHARTYPE>(const CHARTYPE* begin, \
const CHARTYPE* end, \
const std::string& charset, \
method_type how)
#define BOOST_LOCALE_INSTANTIATE_NO_CHAR(CHARTYPE) \
BOOST_LOCALE_INSTANTIATE(CHARTYPE); \
namespace detail { \
template class charset_converter<CHARTYPE, char>; \
}
BOOST_LOCALE_INSTANTIATE(char);
BOOST_LOCALE_INSTANTIATE_NO_CHAR(wchar_t);
#ifdef __cpp_lib_char8_t
BOOST_LOCALE_INSTANTIATE_NO_CHAR(char8_t);
#endif
#ifdef BOOST_LOCALE_ENABLE_CHAR16_T
BOOST_LOCALE_INSTANTIATE_NO_CHAR(char16_t);
#endif
#ifdef BOOST_LOCALE_ENABLE_CHAR32_T
BOOST_LOCALE_INSTANTIATE_NO_CHAR(char32_t);
#endif
}}} // namespace boost::locale::conv
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