97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
+
+
+
+
+
+
|
isUTF8 = 1;
/* We're missing a start byte here */
if (OF_UNLIKELY(!(string[i] & 0x40))) {
madvise((void*)string, length, MADV_NORMAL);
return -1;
}
/* 2 byte sequences for code points 0 - 127 are forbidden */
if (OF_UNLIKELY((string[i] & 0x7E) == 0x40)) {
madvise((void*)string, length, MADV_NORMAL);
return -1;
}
/* We have at minimum a 2 byte character -> check next byte */
if (OF_UNLIKELY(length <= i + 1 ||
(string[i + 1] & 0xC0) != 0x80)) {
madvise((void*)string, length, MADV_NORMAL);
return -1;
}
|