char *

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                      BSON_UTF8_ESCAPE_FOR_JSON(3)

       Allocates  a  new  string matching utf8 except that special characters in JSON are escaped. The resulting
       string is also UTF-8 encoded.

       Both " and \ characters will be backslash-escaped. If a NUL byte is found before utf8_len  bytes,  it  is
       converted to "\u0000". Other non-ASCII characters in the input are preserved.

       The  two-byte  sequence  "C0  80"  is  also interpreted as an internal NUL, for historical reasons.  This
       sequence is considered invalid according to RFC3629.

       • utf8: A UTF-8 encoded string.

       • utf8_len: The length of utf8 in bytes or -1 if it is NULL terminated.

       A newly allocated string that should be freed with bson_free() when utf8 is a valid UTF-8 string, or NULL
       if the (possibly invalid UTF-8) string could not be escaped.

          char *
          bson_utf8_escape_for_json (const char *utf8, ssize_t utf8_len);