Unicode.utf8MakeValid

If the provided string is valid UTF-8, return a copy of it. If not, return a copy in which bytes that could not be interpreted as valid Unicode are replaced with the Unicode replacement character (U+FFFD).

For example, this is an appropriate function to use if you have received a string that was incorrectly declared to be UTF-8, and you need a valid UTF-8 version of it that can be logged or displayed to the user, with the assumption that it is close enough to ASCII or UTF-8 to be mostly readable as-is.

struct Unicode
static
string
utf8MakeValid
(
string str
,
ptrdiff_t len
)

Parameters

str string

string to coerce into UTF-8

len ptrdiff_t

the maximum length of @str to use, in bytes. If @len < 0, then the string is nul-terminated.

Return Value

Type: string

a valid UTF-8 string whose content resembles @str

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Since

2.52