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)
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punycode_encode(3) libidn punycode_encode(3) NAME
punycode_encode - encode Unicode to Punycode SYNOPSIS
#include <punycode.h> int punycode_encode(size_t input_length, const punycode_uint [] input, const unsigned char [] case_flags, size_t * output_length, char [] output); ARGUMENTS
size_t input_length The number of code points in the input array and the number of flags in the case_flags array. const punycode_uint [] input An array of code points. They are presumed to be Unicode code points, but that is not strictly REQUIRED. The array contains code points, not code units. UTF-16 uses code units D800 through DFFF to refer to code points 10000..10FFFF. The code points D800..DFFF do not occur in any valid Unicode string. The code points that can occur in Unicode strings (0..D7FF and E000..10FFFF) are also called Unicode scalar values. const unsigned char [] case_flags A NULL pointer or an array of boolean values parallel to the input array. Nonzero (true, flagged) suggests that the corre- sponding Unicode character be forced to uppercase after being decoded (if possible), and zero (false, unflagged) suggests that it be forced to lowercase (if possible). ASCII code points (0..7F) are encoded literally, except that ASCII letters are forced to uppercase or lowercase according to the corresponding case flags. If case_flags is a NULL pointer then ASCII letters are left as they are, and other code points are treated as unflagged. size_t * output_length The caller passes in the maximum number of ASCII code points that it can receive. On successful return it will contain the number of ASCII code points actually output. char [] output An array of ASCII code points. It is *not* null-terminated; it will contain zeros if and only if the input contains zeros. (Of course the caller can leave room for a terminator and add one if needed.) DESCRIPTION
Converts a sequence of code points (presumed to be Unicode code points) to Punycode. RETURN VALUE
The return value can be any of the Punycode_status values defined above except PUNYCODE_BAD_INPUT. If not PUNYCODE_SUCCESS, then out- put_size and output 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_encode(3)