punycode_decode(3)						      libidn							punycode_decode(3)

NAME

       punycode_decode - decode Punycode to Unicode

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, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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								       1.15							punycode_decode(3)