Section: libidn (3)
idna_to_ascii_4i - API function
int idna_to_ascii_4i(const uint32_t * in, size_t inlen, char * out, int flags);
- const uint32_t * in
- input array with unicode code points.
- size_t inlen
- length of input array with unicode code points.
- char * out
- output zero terminated string that must have room for atleast 63 characters plus the terminating zero.
- int flags
- an Idna_flags value, e.g., IDNA_ALLOW_UNASSIGNED orIDNA_USE_STD3_ASCII_RULES.
The ToASCII operation takes a sequence of Unicode code points thatmake up one domain label and transforms it into a sequence of codepoints in the ASCII range (0..7F). If ToASCII succeeds, theoriginal sequence and the resulting sequence are equivalent labels.
It is important to note that the ToASCII operation can fail. ToASCIIfails if any step of it fails. If any step of the ToASCII operationfails on any label in a domain name, that domain name MUST NOT be usedas an internationalized domain name. The method for deadling with thisfailure is application-specific.
The inputs to ToASCII are a sequence of code points, the AllowUnassignedflag, and the UseSTD3ASCIIRules flag. The output of ToASCII is either asequence of ASCII code points or a failure condition.
ToASCII never alters a sequence of code points that are all in the ASCIIrange to begin with (although it could fail). Applying the ToASCIIoperation multiple times has exactly the same effect as applying it justonce.
Return value: Returns 0 on success, or an Idna_rc error code.
Report bugs to <bug-libidnAATTgnu.org>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GNU Libidn home page: http://www.gnu.org/software/libidn/
Copyright © 2002-2016 Simon Josefsson.
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