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 puny-
code_uint, even if the supplied
output_length is greater than that.
punycode_uint [] output
An array of code points like the input argument of puny-
code_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 ar-
ray. Nonzero (true, flagged) suggests that the correspond-
ing 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 <help-libidn@gnu.org>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GNU Libidn home page: http://www.gnu.org/software/libidn/
COPYRIGHT
Copyright © 2002-2021 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:
http://www.gnu.org/software/libidn/manual/
libidn 1.38 punycode_decode(3)
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