idn2_register_ul(3)

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. After version 0.11: insertname may be NULL to test conversion of src without allocating memory.

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, when ulabel locale to UTF-8 conversion failed IDN2_ICONV_FAIL 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. As an alternative you may obtain the manual from:

    http://www.gnu.org/software/libidn2/manual/