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punycode_decode(3) [debian man page]

punycode_decode(3)						      libidn							punycode_decode(3)

NAME

       punycode_decode - API function

SYNOPSIS

       #include <punycode.h>

       int  punycode_decode(size_t  input_length,  const  char	[]  input,  size_t  *  output_length,  punycode_uint  []  output, unsigned char []
       case_flags);

ARGUMENTS

       size_t input_length
		   The number of ASCII code points in the input array.

       const char [] input
		   An array of ASCII code points (0..7F).

       size_t * output_length
		   The caller passes in the maximum number of code points that it can receive into the output array (which  is	also  the  maximum
		   number  of  flags that it can receive into the case_flags array, if case_flags is not a NULL pointer).  On successful return it
		   will contain the number of code points actually output (which is also the number of flags actually output, if case_flags is not
		   a  null  pointer).	The  decoder will never need to output more code points than the number of ASCII code points in the input,
		   because of the way the encoding is defined.	The number of code points output cannot exceed the maximum  possible  value  of  a
		   punycode_uint, even if the supplied output_length is greater than that.

       punycode_uint [] output
		   An array of code points like the input argument of punycode_encode() (see above).

       unsigned char [] case_flags
		   A NULL pointer (if the flags are not needed by the caller) or an array of boolean values parallel to the output array.  Nonzero
		   (true, flagged) suggests that the corresponding Unicode character be forced to uppercase by the caller (if possible), and  zero
		   (false,  unflagged) suggests that it be forced to lowercase (if possible).  ASCII code points (0..7F) are output already in the
		   proper case, but their flags will be set appropriately so that applying the flags would be harmless.

DESCRIPTION

       Converts Punycode to a sequence of code points (presumed to be Unicode code points).

RETURN VALUE

       The return value can be any of the Punycode_status values  defined  above.   If	not  PUNYCODE_SUCCESS,	then  output_length,  output,  and
       case_flags might contain garbage.

REPORTING BUGS

       Report  bugs  to  <bug-libidn@gnu.org>.	 GNU  Libidn  home  page:  http://www.gnu.org/software/libidn/	General  help  using GNU software:
       http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright (C) 2002-2012 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.

libidn								       1.25							punycode_decode(3)

Check Out this Related Man Page

idna_to_ascii_4i(3)						      libidn						       idna_to_ascii_4i(3)

NAME

       idna_to_ascii_4i - API function

SYNOPSIS

       #include <idna.h>

       int idna_to_ascii_4i(const uint32_t * in, size_t inlen, char * out, int flags);

ARGUMENTS

       const uint32_t * in
		   input array with unicode code points.

       size_t inlen
		   length of input array with unicode code points.

       char * out  output zero terminated string that must have room for at least 63 characters plus the terminating zero.

       int flags   an Idna_flags value, e.g., IDNA_ALLOW_UNASSIGNED or IDNA_USE_STD3_ASCII_RULES.

DESCRIPTION

       The  ToASCII  operation	takes  a  sequence  of Unicode code points that make up one domain label and transforms it into a sequence of code
       points in the ASCII range (0..7F). If ToASCII succeeds, the original sequence and the resulting sequence are equivalent labels.

       It is important to note that the ToASCII operation can fail. ToASCII fails if any step of it fails. If any step of  the	ToASCII  operation
       fails  on  any  label in a domain name, that domain name MUST NOT be used as an internationalized domain name. The method for deadling with
       this failure is application-specific.

       The inputs to ToASCII are a sequence of code points, the AllowUnassigned flag, and the UseSTD3ASCIIRules flag. The  output  of  ToASCII	is
       either a sequence of ASCII code points or a failure condition.

       ToASCII never alters a sequence of code points that are all in the ASCII range to begin with (although it could fail). Applying the ToASCII
       operation multiple times has exactly the same effect as applying it just once.

RETURN VALUE

       Returns 0 on success, or an Idna_rc error code.

REPORTING BUGS

       Report bugs to  <bug-libidn@gnu.org>.   GNU  Libidn  home  page:  http://www.gnu.org/software/libidn/  General  help  using  GNU  software:
       http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright (C) 2002-2012 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.

libidn								       1.25						       idna_to_ascii_4i(3)
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