stringprep_ucs4_to_utf8 man page

stringprep_ucs4_to_utf8 — API function


#include <stringprep.h>

char * stringprep_ucs4_to_utf8(const uint32_t * str, ssize_t len, size_t * items_read, size_t * items_written);


const uint32_t * str

a UCS-4 encoded string

ssize_t len

the maximum length of  str to use. If  len < 0, then the string is terminated with a 0 character.

size_t * items_read

location to store number of characters read read, or NULL.

size_t * items_written

location to store number of bytes written or NULL. The value here stored does not include the trailing 0 byte.


Convert a string from a 32-bit fixed width representation as UCS-4. to UTF-8. The result will be terminated with a 0 byte.

Return value: a pointer to a newly allocated UTF-8 string. This value must be deallocated by the caller. If an error occurs, NULL will be returned.

Reporting Bugs

Report bugs to <>.
General guidelines for reporting bugs:
GNU Libidn home page:

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:


1.33 libidn