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idna_to_unicode_44i(3)              libidn              idna_to_unicode_44i(3)


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: http://www.gnu.org/gethelp/
       GNU Libidn home page: http://www.gnu.org/software/libidn/


COPYRIGHT

       Copyright (C) 2002-2021 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:

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

libidn                               1.38               idna_to_unicode_44i(3)

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