char * bson_utf8_escape_for_json (const char *utf8, ssize_t utf8_len);
- utf8: A UTF-8 encoded string.
- utf8_len: The length of utf8 in bytes or -1 if it is NULL terminated.
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.
A newly allocated string that should be freed with bson_free().
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