相关字符集转换函数功能摘要： std::string boost::locale::conv::between ( char const * begin, char const * end, std::string const & to_encoding, std::string const & from_encoding, method_type how = default_method ) Convert a text in range [begin,end) to to_encoding from from_encoding std::string boost::locale::conv::between ( char const * text, std::string const & to_encoding, std::string const & from_encoding, method_type how = default_method ) [inline] Convert a text to to_encoding from from_encoding std::string boost::locale::conv::between ( std::string const & text, std::string const & to_encoding, std::string const & from_encoding, method_type how = default_method ) [inline] Convert a text to to_encoding from from_encoding template<typename CharType > std::string boost::locale::conv::from_utf ( CharType const * begin, CharType const * end, std::string const & charset, method_type how = default_method ) convert UTF text in range [begin,end) to a text encoded with charset according to policy how template<typename CharType > std::string boost::locale::conv::from_utf ( CharType const * begin, CharType const * end, std::locale const & loc, method_type how = default_method ) convert UTF text in range [begin,end) to a text encoded according to locale loc according to policy how Note: throws std::bad_cast if the loc does not have info facet installed template<typename CharType > std::string boost::locale::conv::from_utf ( std::basic_string< CharType > const & text, std::string const & charset, method_type how = default_method ) Convert a text from charset to UTF string template<typename CharType > std::string boost::locale::conv::from_utf ( CharType const * text, std::string const & charset, method_type how = default_method ) Convert a text from UTF to charset template<typename CharType > std::string boost::locale::conv::from_utf ( std::basic_string< CharType > const & text, std::locale const & loc, method_type how = default_method ) Convert a text in UTF to locale encoding given by loc Note: throws std::bad_cast if the loc does not have info facet installed template<typename CharType > std::string boost::locale::conv::from_utf ( CharType const * text, std::locale const & loc, method_type how = default_method ) Convert a text in UTF to locale encoding given by loc Note: throws std::bad_cast if the loc does not have info facet installed template<typename CharType > std::basic_string<CharType> boost::locale::conv::to_utf ( char const * begin, char const * end, std::string const & charset, method_type how = default_method ) convert string to UTF string from text in range [begin,end) encoded with charset according to policy how template<typename CharType > std::basic_string<CharType> boost::locale::conv::to_utf ( char const * begin, char const * end, std::locale const & loc, method_type how = default_method ) convert string to UTF string from text in range [begin,end) encoded according to locale loc according to policy how Note: throws std::bad_cast if the loc does not have info facet installed template<typename CharType > std::basic_string<CharType> boost::locale::conv::to_utf ( std::string const & text, std::string const & charset, method_type how = default_method ) convert a string text encoded with charset to UTF string template<typename CharType > std::basic_string<CharType> boost::locale::conv::to_utf ( char const * text, std::string const & charset, method_type how = default_method ) Convert a text from charset to UTF string template<typename CharType > std::basic_string<CharType> boost::locale::conv::to_utf ( std::string const & text, std::locale const & loc, method_type how = default_method ) Convert a text in locale encoding given by loc to UTF Note: throws std::bad_cast if the loc does not have info facet installed template<typename CharType > std::basic_string<CharType> boost::locale::conv::to_utf ( char const * text, std::locale const & loc, method_type how = default_method ) Convert a text in locale encoding given by loc to UTF Note: throws std::bad_cast if the loc does not have info facet installed template<typename CharOut , typename CharIn > std::basic_string<CharOut> boost::locale::conv::utf_to_utf ( CharIn const * begin, CharIn const * end, method_type how = default_method ) Convert a Unicode text in range [begin,end) to other Unicode encoding template<typename CharOut , typename CharIn > std::basic_string<CharOut> boost::locale::conv::utf_to_utf ( CharIn const * str, method_type how = default_method ) Convert a Unicode NUL terminated string str other Unicode encoding template<typename CharOut , typename CharIn > std::basic_string<CharOut> boost::locale::conv::utf_to_utf ( std::basic_string< CharIn > const & str, method_type how = default_method ) Convert a Unicode string str other Unicode encoding
简单示例：
1、between把 source 这个字串从BIG5 转换到 UTF-8：
string source = "BIG5字符串"; string s = boost::locale::conv::between( source, "UTF-8", "BIG5" );
2、to_utf可以输出 string ，也可以输出成 wstring。像下面的例子，就是把 sSource 这个 BIG-5 编码的字串，依序转换成 wstring 和 string 的字串。
string sSource = "BIG-5字符串"; wstring ws = boost::locale::conv::to_utf<wchar_t>( sSource, "BIG5" ); string ss = boost::locale::conv::to_utf<char>( sSource, "BIG5" );
3、from_utf 是把 UTF 字串（string 或wstring）、转换为特定编码的字串用的，他可以转换string 或wstring 的字串，但是输出一定是string。
下面的例子，就是把 sSource 和 wSource 这两个 UTF 字串，都转换成 BIG-5 的 string 字串。
string sSource = "字符串"; wstring wSource = L"..."; string ss1 = boost::locale::conv::from_utf( wSource, "BIG5" ); string ss2 = boost::locale::conv::from_utf( sSource, "BIG5" );
string sSource = "..."; wstring wSource = L"..."; wstring wStr = boost::locale::conv::utf_to_utf<wchar_t>( sSource ); string sStr = boost::locale::conv::utf_to_utf<char>( wSource );