epee::string_encoding Namespace Reference

Functions
std::string	convert_to_ansii (const std::wstring &str_from)
std::string	convert_to_ansii (const std::string &str_from)
std::wstring	convert_to_unicode (const std::string &str_from)
std::wstring	convert_to_unicode (const std::wstring &str_from)
template<class target_string>
target_string	convert_to_t (const std::wstring &str_from)
template<>
std::string	convert_to_t< std::string > (const std::wstring &str_from)
template<>
std::wstring	convert_to_t< std::wstring > (const std::wstring &str_from)
template<class target_string>
target_string	convert_to_t (const std::string &str_from)
template<>
std::string	convert_to_t< std::string > (const std::string &str_from)
template<>
std::wstring	convert_to_t< std::wstring > (const std::string &str_from)
std::string &	base64_chars ()
std::string	base64_encode (unsigned char const *bytes_to_encode, size_t in_len)
std::string	base64_encode (const std::string &str)
bool	is_base64 (unsigned char c)
std::string	base64_decode (std::string const &encoded_string)

Function Documentation

base64_chars()

std::string & epee::string_encoding::base64_chars ( )

inline

Definition at line 132 of file string_coding.h.

    {
 
        static std::string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
            "abcdefghijklmnopqrstuvwxyz"
            "0123456789+/";
 
        return chars;
 
    }

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base64_decode()

std::string epee::string_encoding::base64_decode ( std::string const & encoded_string )

inline

Definition at line 199 of file string_coding.h.

                                                             {
        size_t in_len = encoded_string.size();
        size_t i = 0;
        size_t j = 0;
        size_t in_ = 0;
        unsigned char char_array_4[4], char_array_3[3];
        std::string ret;
 
        while (in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {
            char_array_4[i++] = encoded_string[in_]; in_++;
            if (i ==4) {
                for (i = 0; i <4; i++)
                    char_array_4[i] = (unsigned char)base64_chars().find(char_array_4[i]);
 
                char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
                char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
                char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
 
                for (i = 0; (i < 3); i++)
                    ret += char_array_3[i];
                i = 0;
            }
        }
 
        if (i) {
            for (j = i; j <4; j++)
                char_array_4[j] = 0;
 
            for (j = 0; j <4; j++)
                char_array_4[j] = (unsigned char)base64_chars().find(char_array_4[j]);
 
            char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
            char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
            char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
 
            for (j = 0; (j < i - 1); j++) ret += char_array_3[j];
        }
 
        return ret;
    }

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base64_encode() [1/2]

std::string epee::string_encoding::base64_encode ( const std::string & str )

inline

Definition at line 188 of file string_coding.h.

    {
        return base64_encode((unsigned char const* )str.data(), str.size());
    }

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base64_encode() [2/2]

std::string epee::string_encoding::base64_encode ( unsigned char const * bytes_to_encode, size_t in_len )

inline

Definition at line 144 of file string_coding.h.

                                                                                 {
        std::string ret;
        int i = 0;
        int j = 0;
        unsigned char char_array_3[3];
        unsigned char char_array_4[4];
 
        while (in_len--) {
            char_array_3[i++] = *(bytes_to_encode++);
            if (i == 3) {
                char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
                char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
                char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
                char_array_4[3] = char_array_3[2] & 0x3f;
 
                for(i = 0; (i <4) ; i++)
                    ret += base64_chars()[char_array_4[i]];
                i = 0;
            }
        }
 
        if (i)
        {
            for(j = i; j < 3; j++)
                char_array_3[j] = '\0';
 
            char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
            char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
            char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
            char_array_4[3] = char_array_3[2] & 0x3f;
 
            for (j = 0; (j < i + 1); j++)
                ret += base64_chars()[char_array_4[j]];
 
            while((i++ < 3))
                ret += '=';
 
        }
 
        return ret;
 
    }

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convert_to_ansii() [1/2]

std::string epee::string_encoding::convert_to_ansii ( const std::string & str_from )

inline

Definition at line 66 of file string_coding.h.

    {
        return str_from;
    }

convert_to_ansii() [2/2]

std::string epee::string_encoding::convert_to_ansii ( const std::wstring & str_from )

inline

Definition at line 37 of file string_coding.h.

    {
        
        std::string res(str_from.begin(), str_from.end());
        return res;
        /*
        std::string result;
        std::locale loc;
        for(unsigned int i= 0; i < str_from.size(); ++i)
        {
            result += std::use_facet<std::ctype<wchar_t> >(loc).narrow(str_from[i]);
        }
        return result;
        */
        
        //return boost::lexical_cast<std::string>(str_from);
        /*
        std::string str_trgt;
        if(!str_from.size())
            return str_trgt;
        int cb = ::WideCharToMultiByte( code_page, 0, str_from.data(), (__int32)str_from.size(), 0, 0, 0, 0  );
        if(!cb)
            return str_trgt;
        str_trgt.resize(cb);
        ::WideCharToMultiByte(  code_page, 0, str_from.data(), (int)str_from.size(), 
                                    (char*)str_trgt.data(), (int)str_trgt.size(), 0, 0);
        return str_trgt;*/
    }

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convert_to_t() [1/2]

template<class target_string>

target_string epee::string_encoding::convert_to_t ( const std::string & str_from )

inline

convert_to_t() [2/2]

template<class target_string>

target_string epee::string_encoding::convert_to_t ( const std::wstring & str_from )

inline

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convert_to_t< std::string >() [1/2]

template<>

std::string epee::string_encoding::convert_to_t< std::string > ( const std::string & str_from )

inline

Definition at line 120 of file string_coding.h.

    {
        return str_from;
    }

convert_to_t< std::string >() [2/2]

template<>

std::string epee::string_encoding::convert_to_t< std::string > ( const std::wstring & str_from )

inline

Definition at line 105 of file string_coding.h.

    {
        return convert_to_ansii(str_from);
    }

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convert_to_t< std::wstring >() [1/2]

template<>

std::wstring epee::string_encoding::convert_to_t< std::wstring > ( const std::string & str_from )

inline

Definition at line 126 of file string_coding.h.

    {
        return convert_to_unicode(str_from);
    }

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convert_to_t< std::wstring >() [2/2]

template<>

std::wstring epee::string_encoding::convert_to_t< std::wstring > ( const std::wstring & str_from )

inline

Definition at line 111 of file string_coding.h.

    {
        return str_from;
    }

convert_to_unicode() [1/2]

std::wstring epee::string_encoding::convert_to_unicode ( const std::string & str_from )

inline

Definition at line 71 of file string_coding.h.

    {
        std::wstring result;
        std::locale loc;
        for(unsigned int i= 0; i < str_from.size(); ++i)
        {
            result += std::use_facet<std::ctype<wchar_t> >(loc).widen(str_from[i]);
        }
        return result;
        
        //return boost::lexical_cast<std::wstring>(str_from);
        /*
        std::wstring str_trgt;
        if(!str_from.size())
            return str_trgt;
 
        int cb = ::MultiByteToWideChar( code_page, 0, str_from.data(), (int)str_from.size(), 0, 0 );
        if(!cb)
            return str_trgt;
 
        str_trgt.resize(cb);
        ::MultiByteToWideChar( code_page, 0, str_from.data(),(int)str_from.size(), 
                                (wchar_t*)str_trgt.data(),(int)str_trgt.size());
        return str_trgt;*/
    }

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convert_to_unicode() [2/2]

std::wstring epee::string_encoding::convert_to_unicode ( const std::wstring & str_from )

inline

Definition at line 96 of file string_coding.h.

    {
        return str_from;
    }

is_base64()

bool epee::string_encoding::is_base64 ( unsigned char c )

inline

Definition at line 193 of file string_coding.h.

                                           {
        return (isalnum(c) || (c == '+') || (c == '/'));
    }

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