idna_to_ascii_4i man page on QNX
idna_to_ascii_4i(3) libidn idna_to_ascii_4i(3)
idna_to_ascii_4i - API function
int idna_to_ascii_4i(const uint32_t * in, size_t inlen, char * out, int
const uint32_t * in
input array with unicode code points.
length of input array with unicode code points.
char * out output zero terminated string that must have room for at
least 63 characters plus the terminating zero.
int flags an Idna_flags value, e.g., IDNA_ALLOW_UNASSIGNED or
The ToASCII operation takes a sequence of Unicode code points that make
up one domain label and transforms it into a sequence of code points in
the ASCII range (0..7F). If ToASCII succeeds, the original sequence and
the resulting sequence are equivalent labels.
It is important to note that the ToASCII operation can fail. ToASCII
fails if any step of it fails. If any step of the ToASCII operation
fails on any label in a domain name, that domain name MUST NOT be used
as an internationalized domain name. The method for deadling with this
failure is application-specific.
The inputs to ToASCII are a sequence of code points, the AllowUnas‐
signed flag, and the UseSTD3ASCIIRules flag. The output of ToASCII is
either a sequence of ASCII code points or a failure condition.
ToASCII never alters a sequence of code points that are all in the
ASCII range to begin with (although it could fail). Applying the
ToASCII operation multiple times has exactly the same effect as apply‐
ing it just once.
Returns 0 on success, or an Idna_rc error code.
Report bugs to <firstname.lastname@example.org>. GNU Libidn home page:
http://www.gnu.org/software/libidn/ General help using GNU software:
Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Simon
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
The full documentation for libidn is maintained as a Texinfo manual.
If the info and libidn programs are properly installed at your site,
should give you access to the complete manual.
libidn 1.19 idna_to_ascii_4i(3)
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