Unicode.utf8Strlen

Computes the length of the string in characters, not including the terminating nul character. If the @max'th byte falls in the middle of a character, the last (partial) character is not counted.

struct Unicode
static
utf8Strlen
(
string p
,
ptrdiff_t max
)

Parameters

p string

pointer to the start of a UTF-8 encoded string

max ptrdiff_t

the maximum number of bytes to examine. If @max is less than 0, then the string is assumed to be nul-terminated. If @max is 0, @p will not be examined and may be %NULL. If @max is greater than 0, up to @max bytes are examined

Return: the length of the string in characters

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