NAME

       idn2_register_ul - API function

SYNOPSIS

       #include <idn2.h>

       int  idn2_register_ul(const  char  *  ulabel, const char * alabel, char ** insertname, int
       flags);

ARGUMENTS

       const char * ulabel
                   input zero-terminated locale encoded string, or NULL.

       const char * alabel
                   input zero-terminated ACE encoded string (xn--), or NULL.

       char ** insertname
                   newly allocated output variable with name to register in DNS.

       int flags   optional idn2_flags to modify behaviour.

DESCRIPTION

       Perform IDNA2008 register  string  conversion  on  domain  label  ulabel  and  alabel,  as
       described  in  section 4 of RFC 5891.  Note that the input ulabel is assumed to be encoded
       in the locale's default coding system, and will be transcoded to UTF-8 and NFC  normalized
       by this function.

       It  is  recommended  to  supply  both  ulabel  and  alabel  for better error checking, but
       supplying just one of them will work.  Passing in only alabel is better than only  ulabel.
       See RFC 5891 section 4 for more information.

RETURNS

       On  successful  conversion  IDN2_OK is returned, when the given ulabel and alabel does not
       match each other IDN2_UALABEL_MISMATCH is returned, when either of the  input  labels  are
       too  long  IDN2_TOO_BIG_LABEL is returned, when alabel does does not appear to be a proper
       A-label IDN2_INVALID_ALABEL is returned, or another error code is returned.

SEE ALSO

       The full documentation for libidn2 is maintained as a Texinfo manual.   If  the  info  and
       libidn2 programs are properly installed at your site, the command

              info libidn2

       should give you access to the complete manual.