GRAPHEME_TO_LOWERCASE_UTF8(3)

NAME
grapheme_to_lowercase_utf8 - convert UTF-8-encoded string to lowercase

SYNOPSIS
#include <grapheme.h>
size_t
grapheme_to_lowercase_utf8(const char *src, size_t srclen, char *dest, size_t destlen);

DESCRIPTION
The grapheme_to_lowercase_utf8() function converts the UTF-8-encoded string str to lowercase and writes the result to dest up to destlen, unless dest is set to NULL.

If srclen is set to SIZE_MAX (stdint.h is already included by grapheme.h) the UTF-8-encoded string src is interpreted to be NUL-terminated and processing stops when a NUL-byte is encountered.

For non-UTF-8 input data grapheme_to_lowercase(3) can be used instead.

RETURN VALUES
The grapheme_to_lowercase_utf8() function returns the number of bytes in the array resulting from converting src to lowercase, even if destlen is not large enough or dest is NULL.

SEE ALSO
grapheme_to_lowercase(3), libgrapheme(7)

STANDARDS
grapheme_to_lowercase_utf8() is compliant with the Unicode 15.0.0 specification.

AUTHORS
Laslo Hunhold <dev@frign.de>