NAME

       idna_to_unicode_44i - API function

SYNOPSIS

       #include <idna.h>

       int idna_to_unicode_44i(const uint32_t * in, size_t inlen, uint32_t * out, size_t * outlen, int flags);

ARGUMENTS

       const uint32_t * in
                   input array with unicode code points.

       size_t inlen
                   length of input array with unicode code points.

       uint32_t * out
                   output array with unicode code points.

       size_t * outlen
                   on  input,  maximum  size  of  output array with unicode code points, on exit, actual size of
                   output array with unicode code points.

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

DESCRIPTION

       The ToUnicode operation takes a sequence of Unicode code points that make up one domain label and returns
       a sequence of Unicode code points. If the input sequence is a label in ACE form, then the  result  is  an
       equivalent  internationalized  label that is not in ACE form, otherwise the original sequence is returned
       unaltered.

       ToUnicode never fails. If any step fails, then the original input sequence  is  returned  immediately  in
       that step.

       The  Punycode  decoder  can never output more code points than it inputs, but Nameprep can, and therefore
       ToUnicode can.  Note that the number of octets needed to represent a sequence of code points  depends  on
       the particular character encoding used.

       The   inputs   to   ToUnicode  are  a  sequence  of  code  points,  the  AllowUnassigned  flag,  and  the
       UseSTD3ASCIIRules flag. The output of ToUnicode is always a sequence of Unicode code points.

       Return value: Returns Idna_rc error condition, but it must only be  used  for  debugging  purposes.   The
       output  buffer  is  always  guaranteed  to  contain the correct data according to the specification (sans
       malloc induced errors).  NB!  This means that you normally ignore the return code from this function,  as
       checking it means breaking the standard.

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 © 2002-2025 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/

libidn                                                1.43                                idna_to_unicode_44i(3)