1idn2_register_u8(3) libidn2 idn2_register_u8(3)
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6 idn2_register_u8 - API function
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9 #include <idn2.h>
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11 int idn2_register_u8(const uint8_t * ulabel, const uint8_t * alabel,
12 uint8_t ** insertname, int flags);
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15 const uint8_t * ulabel
16 input zero-terminated UTF-8 and Unicode NFC string, or
17 NULL.
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19 const uint8_t * alabel
20 input zero-terminated ACE encoded string (xn--), or NULL.
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22 uint8_t ** insertname
23 newly allocated output variable with name to register in
24 DNS.
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26 int flags optional idn2_flags to modify behaviour.
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29 Perform IDNA2008 register string conversion on domain label ulabel and
30 alabel , as described in section 4 of RFC 5891. Note that the input
31 ulabel must be encoded in UTF-8 and be in Unicode NFC form.
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33 Pass IDN2_NFC_INPUT in flags to convert input ulabel to NFC form be‐
34 fore further processing.
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36 It is recommended to supply both ulabel and alabel for better error
37 checking, but supplying just one of them will work. Passing in only
38 alabel is better than only ulabel . See RFC 5891 section 4 for more
39 information.
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41 After version 0.11: insertname may be NULL to test conversion of src
42 without allocating memory.
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45 On successful conversion IDN2_OK is returned, when the given ulabel
46 and alabel does not match each other IDN2_UALABEL_MISMATCH is re‐
47 turned, when either of the input labels are too long IDN2_TOO_BIG_LABEL
48 is returned, when alabel does does not appear to be a proper A-label
49 IDN2_INVALID_ALABEL is returned, or another error code is returned.
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52 Report bugs to <help-libidn@gnu.org>.
53 General guidelines for reporting bugs: https://www.gnu.org/gethelp/
54 Libidn2 home page: https://www.gnu.org/software/libidn2/
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58 Copyright © 2002-2022 Simon Josefsson.
59 Copying and distribution of this file, with or without modification,
60 are permitted in any medium without royalty provided the copyright no‐
61 tice and this notice are preserved.
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64 The full documentation for libidn2 is maintained as a Texinfo manual.
65 If the info and libidn2 programs are properly installed at your site,
66 the command
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68 info libidn2
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70 should give you access to the complete manual. As an alternative you
71 may obtain the manual from:
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73 https://www.gnu.org/software/libidn/libidn2/manual/
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75libidn2 2.3.4 idn2_register_u8(3)