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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 se- quence 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 AllowUnas- signed 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 con- tain the correct data according to the specification (sans malloc in- duced 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 (C) 2002-2025 Simon Josefsson. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright no- tice 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)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | REPORTING BUGS | COPYRIGHT | SEE ALSO
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