UTFCodeParser Class Reference

Public Member Functions
	UTFCodeParser ()
	UTFCodeParser (const UTFCodeParser &orig)
virtual	~UTFCodeParser ()
int	addChar (char c)
int	addChar (char16_t c)
int	addChar (char32_t c)
std::string	getUTF8 ()
std::u16string	getUTF16 ()
std::u32string	getUTF32 ()
void	reset ()
char32_t	getCode ()
bool	valid ()

Private Attributes
char32_t	code = 0
int	byte = 0

Detailed Description

Definition at line 101 of file utfUtils.cpp.

Constructor & Destructor Documentation

UTFCodeParser::UTFCodeParser ( )

inline

Definition at line 105 of file utfUtils.cpp.

{ };

UTFCodeParser::UTFCodeParser ( const UTFCodeParser &  orig )

inline

Definition at line 107 of file utfUtils.cpp.

{ };

virtual UTFCodeParser::~UTFCodeParser ( )

inlinevirtual

Definition at line 109 of file utfUtils.cpp.

{ };

Member Function Documentation

int UTFCodeParser::addChar ( char  c )

inline

Add a UTF8 character to the code.

Parameters

c	The UTF8 character.

Returns

number of additional characters needed. 0 = complete, -1 on Error,

Definition at line 116 of file utfUtils.cpp.

References byte, and code.

Referenced by utf16to8(), and utf8to16().

    {
        if (byte == 0)
        {
            // First byte of sequence.
            if ((c & 0x80) == 0)
            {
                // Single byte code.
                code = c;
                return byte;
            }
            // Find number of bytes in code.
            while (c & 0x80)
            {
                c <<= 1;
                byte++;
            }
            code = c >> byte;
            byte--;
            if (byte == 0)
            {
                // Error: in middle of character.
                code = 0;
                return -1;
            }
            return byte;
        }
        // Continuing character.
        if ((c & 0xC0) != 0x80)
        {
            // Error: continuation code expected and not found.
            code = 0;
            return -1;
        }
        byte--;
        code <<= 6;
        code += c & 0x3f;
        return byte;
    }

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int UTFCodeParser::addChar ( char16_t  c )

inline

Add a UTF16 character to the code.

Parameters

c	The UTF16 character.

Returns

number of additional characters needed. 0 = complete, -1 on Error,

Definition at line 161 of file utfUtils.cpp.

References byte, and code.

    {
        if (byte == 0)
        {
            if (c < 0xD800 || c >= 0xE000)
            {
                code = c;
                return byte;
            }
            if (c >= 0xDC00)
            {
                // Error! This is a continuation character.
                code = 0;
                return -1;
            }
            byte = 1;
            code = c & 0x3FF;
            return byte;
        }
        if (c < 0xDC00 || c >= 0xE000)
        {
            // Error: Expected continuation character not found.
            if (c < 0xD800)
            {
                // Assume, good code following bad character.
                code = c;
                byte = 0;
                return 0;
            }
            // Assume, good start code following bad character.
            byte = 1;
            code = c & 0x3FF;
            return byte;
        }
        byte--;
        code <<= 10;
        code += c & 0x3FF;
        code += 0x010000;
        return byte;
    }

int UTFCodeParser::addChar ( char32_t  c )

inline

Add a UTF32 character to the code.

Parameters

c	The UTF32 character.

Returns

number of additional characters needed. 0 = complete, -1 on Error,

Definition at line 207 of file utfUtils.cpp.

References byte, and code.

    {
        code = c;
        byte = 0;
        return byte;
    }

char32_t UTFCodeParser::getCode ( )

inline

Get the current character code value.

Returns

Definition at line 268 of file utfUtils.cpp.

References code.

    {
        return code;
    }

std::u16string UTFCodeParser::getUTF16 ( )

inline

Get the current code as a UTF16 character string.

Returns

The UTF16 representation of the code of an empty string if the code is not valid.

Definition at line 231 of file utfUtils.cpp.

References byte, code, and codeToUTF16().

Referenced by utf8to16().

    {
        if (byte == 0)
        {
            return codeToUTF16(code);
        }
        return u"";
    }

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std::u32string UTFCodeParser::getUTF32 ( )

inline

Get the current code as a UTF32 character string.

Returns

The UTF32 representation of the code of an empty string if the code is not valid.

Definition at line 244 of file utfUtils.cpp.

References byte, and code.

    {
        if (byte == 0)
        {
            std::u32string out;
            out += code;
            return out;
        }
        return U"";
    }

std::string UTFCodeParser::getUTF8 ( )

inline

Get the current code as a UTF8 character string.

Returns

The UTF8 representation of the code of an empty string if the code is not valid.

Definition at line 218 of file utfUtils.cpp.

References byte, code, and codeToUTF8().

Referenced by utf16to8().

    {
        if (byte == 0)
        {
            return codeToUTF8(code);
        }
        return "";
    }

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void UTFCodeParser::reset ( )

inline

Reset the state.

Definition at line 258 of file utfUtils.cpp.

References byte, and code.

    {
        code = 0;
        byte = 0;
    }

bool UTFCodeParser::valid ( )

inline

Is this current state a valid code?

Returns

True if code is valid.

Definition at line 277 of file utfUtils.cpp.

References byte.

    {
        return byte == 0;
    }

Member Data Documentation

int UTFCodeParser::byte = 0

private

Definition at line 284 of file utfUtils.cpp.

Referenced by addChar(), getUTF16(), getUTF32(), getUTF8(), reset(), and valid().

char32_t UTFCodeParser::code = 0

private

Definition at line 283 of file utfUtils.cpp.

Referenced by addChar(), getCode(), getUTF16(), getUTF32(), getUTF8(), and reset().

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The documentation for this class was generated from the following file:

• /backups/local/src/eve/EvEmu_Crucible/src/eve-core/utils/utfUtils.cpp