nana::utf Namespace Reference

Functions
const char *	char_ptr (const char *text, unsigned pos)
	return a pointer to the code unit of the character at pos More...
const char *	char_ptr (const std::string &text_utf8, unsigned pos)
	return a pointer to the code unit of the character at pos - reuse ^ ? More...
wchar_t	char_at (const char *text_utf8, unsigned pos, unsigned *len)
	return a code point (max 16 bits?) and the len in code units of the character at pos More...
wchar_t	char_at (const ::std::string &text_utf8, unsigned pos, unsigned *len)
	return a code point (max 16 bits?) and the len in code units of the character at pos More...
const char *	char_ptr (const ::std::string &text_utf8, unsigned pos)

Function Documentation

wchar_t nana::utf::char_at	(	const char *	text_utf8,
		unsigned	pos,
		unsigned *	len
	)

return a code point (max 16 bits?) and the len in code units of the character at pos

Get the unicode character by a specified character index.

Parameters

text_utf8	A string encoded as UTF-8.
pos	The unicode character index.
len	A unsigned pointer to receive the number of bytes it takes in UTF-8 encoded. If len is a nullptr, it is ignored.

Returns

A unicode character. '\0' if pos is out of range.

wchar_t nana::utf::char_at	(	const ::std::string &	text_utf8,
		unsigned	pos,
		unsigned *	len
	)

return a code point (max 16 bits?) and the len in code units of the character at pos

const char* nana::utf::char_ptr	(	const ::std::string &	text_utf8,
		unsigned	pos
	)

const char * nana::utf::char_ptr	(	const char *	text_utf8,
		unsigned	pos
	)

return a pointer to the code unit of the character at pos

Attempt to get a pointer to a character of UTF-8 string by a specified character index.

Parameters

text_utf8	A string encoded as UTF-8.
pos	The unicode character index.

Returns

A pointer to the unicode character. It returns a null if pos is out of range.

const char* nana::utf::char_ptr	(	const std::string &	text_utf8,
		unsigned	pos
	)

return a pointer to the code unit of the character at pos - reuse ^ ?