conversion.h

//
//  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)
//
#ifndef BOOSTER_LOCALE_CONVERTER_H_INCLUDED
#define BOOSTER_LOCALE_CONVERTER_H_INCLUDED

#include <booster/config.h>
#ifdef BOOSTER_MSVC
#  pragma warning(push)
#  pragma warning(disable : 4275 4251 4231 4660)
#endif
#include <locale>


namespace booster {
    namespace locale {
        

        
        class converter_base {
        public:
            typedef enum {
                normalization,  
                upper_case,     
                lower_case,     
                case_folding,   
                title_case      
            } conversion_type;
        };

        template<typename CharType>
        class converter;

        #ifdef BOOSTER_LOCALE_DOXYGEN
        template<typename Char>
        class BOOSTER_API converter: public converter_base, public std::locale::facet {
        public:
            static std::locale::id id;

            converter(size_t refs = 0) : std::locale::facet(refs)
            {
            }
            virtual std::basic_string<Char> convert(conversion_type how,Char const *begin,Char const *end,int flags = 0) const = 0;
#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
            std::locale::id& __get_id (void) const { return id; }
#endif
        };
        #else

        template<>
        class BOOSTER_API converter<char> : public converter_base, public std::locale::facet {
        public:
            static std::locale::id id;

            converter(size_t refs = 0) : std::locale::facet(refs)
            {
            }
            virtual std::string convert(conversion_type how,char const *begin,char const *end,int flags = 0) const = 0;
#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
            std::locale::id& __get_id (void) const { return id; }
#endif
        };

        template<>
        class BOOSTER_API converter<wchar_t> : public converter_base, public std::locale::facet {
        public:
            static std::locale::id id;
            converter(size_t refs = 0) : std::locale::facet(refs)
            {
            }
             virtual std::wstring convert(conversion_type how,wchar_t const *begin,wchar_t const *end,int flags = 0) const = 0;
#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
            std::locale::id& __get_id (void) const { return id; }
#endif
        };

        #ifdef BOOSTER_HAS_CHAR16_T
        template<>
        class BOOSTER_API converter<char16_t> : public converter_base, public std::locale::facet {
        public:
            static std::locale::id id;
            converter(size_t refs = 0) : std::locale::facet(refs)
            {
            }
            virtual std::u16string convert(conversion_type how,char16_t const *begin,char16_t const *end,int flags = 0) const = 0; 
#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
            std::locale::id& __get_id (void) const { return id; }
#endif
        };
        #endif

        #ifdef BOOSTER_HAS_CHAR32_T
        template<>
        class BOOSTER_API converter<char32_t> : public converter_base, public std::locale::facet {
        public:
            static std::locale::id id;
            converter(size_t refs = 0) : std::locale::facet(refs)
            {
            }
            virtual std::u32string convert(conversion_type how,char32_t const *begin,char32_t const *end,int flags = 0) const = 0;
#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
            std::locale::id& __get_id (void) const { return id; }
#endif
        };
        #endif

        #endif


        typedef enum {
            norm_nfd,   
            norm_nfc,   
            norm_nfkd,  
            norm_nfkc,  
            norm_default = norm_nfc, 
        } norm_type;
       
        template<typename CharType>
        std::basic_string<CharType> normalize(std::basic_string<CharType> const &str,norm_type n=norm_default,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::normalization,str.data(),str.data() + str.size(),n);
        }

        template<typename CharType>
        std::basic_string<CharType> normalize(CharType const *str,norm_type n=norm_default,std::locale const &loc=std::locale())
        {
            CharType const *end=str;
            while(*end)
                end++;
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::normalization,str,end,n);
        }
        
        template<typename CharType>
        std::basic_string<CharType> normalize(  CharType const *begin,
                                                CharType const *end,
                                                norm_type n=norm_default,
                                                std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::normalization,begin,end,n);
        }

        

        template<typename CharType>
        std::basic_string<CharType> to_upper(std::basic_string<CharType> const &str,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::upper_case,str.data(),str.data()+str.size());
        }
        
        template<typename CharType>
        std::basic_string<CharType> to_upper(CharType const *str,std::locale const &loc=std::locale())
        {
            CharType const *end=str;
            while(*end)
                end++;
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::upper_case,str,end);
        }
        
        template<typename CharType>
        std::basic_string<CharType> to_upper(CharType const *begin,CharType const *end,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::upper_case,begin,end);
        }

        

        template<typename CharType>
        std::basic_string<CharType> to_lower(std::basic_string<CharType> const &str,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::lower_case,str.data(),str.data()+str.size());
        }
        
        template<typename CharType>
        std::basic_string<CharType> to_lower(CharType const *str,std::locale const &loc=std::locale())
        {
            CharType const *end=str;
            while(*end)
                end++;
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::lower_case,str,end);
        }
        
        template<typename CharType>
        std::basic_string<CharType> to_lower(CharType const *begin,CharType const *end,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::lower_case,begin,end);
        }
        

        template<typename CharType>
        std::basic_string<CharType> to_title(std::basic_string<CharType> const &str,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::title_case,str.data(),str.data()+str.size());
        }
        
        template<typename CharType>
        std::basic_string<CharType> to_title(CharType const *str,std::locale const &loc=std::locale())
        {
            CharType const *end=str;
            while(*end)
                end++;
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::title_case,str,end);
        }
        
        template<typename CharType>
        std::basic_string<CharType> to_title(CharType const *begin,CharType const *end,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::title_case,begin,end);
        }

        

        template<typename CharType>
        std::basic_string<CharType> fold_case(std::basic_string<CharType> const &str,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::case_folding,str.data(),str.data()+str.size());
        }
        
        template<typename CharType>
        std::basic_string<CharType> fold_case(CharType const *str,std::locale const &loc=std::locale())
        {
            CharType const *end=str;
            while(*end)
                end++;
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::case_folding,str,end);
        }
        
        template<typename CharType>
        std::basic_string<CharType> fold_case(CharType const *begin,CharType const *end,std::locale const &loc=std::locale())
        {
            return std::use_facet<converter<CharType> >(loc).convert(converter_base::case_folding,begin,end);
        }

    } // locale

} // boost

#ifdef BOOSTER_MSVC
#pragma warning(pop)
#endif


#endif


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