Provided by: libidn-dev_1.42-1build1_amd64 bug

NAME
       idna_to_ascii_4i - API function


SYNOPSIS
       #include <idna.h>

       int idna_to_ascii_4i(const uint32_t * in, size_t inlen, char * out, int flags);


ARGUMENTS
       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 at least 63 characters plus the
                   terminating zero.

       int flags   an Idna_flags value, e.g., IDNA_ALLOW_UNASSIGNED or IDNA_USE_STD3_ASCII_RULES.


DESCRIPTION
       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 AllowUnassigned 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  applying  it
       just once.

       Return value: Returns 0 on success, or an Idna_rc error code.


REPORTING BUGS
       Report bugs to <help-libidn@gnu.org>.
       General guidelines for reporting bugs: https://www.gnu.org/gethelp/
       GNU Libidn home page: https://www.gnu.org/software/libidn/


COPYRIGHT
       Copyright © 2002-2024 Simon Josefsson.
       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.


SEE ALSO
       The full documentation for libidn is maintained as a Texinfo manual.  If the info and libidn programs are
       properly installed at your site, the command

              info libidn

       should give you access to the complete manual.  As an alternative you may obtain the manual from:

              https://www.gnu.org/software/libidn/manual/