Tribblix: manual page: punycode

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 <help-libidn@gnu.org>.
General guidelines for reporting bugs: https://www.gnu.org/gethelp/
GNU Libidn home page: https://www.gnu.org/software/libidn/

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