private static bool NormalizeAndCheckString(
string charString,
int start,
int length,
Normalization form) {
int i = start;
var norm = new NormalizingCharacterInput(
charString,
start,
length,
form);
var ch = 0;
while ((ch = norm.ReadChar()) >= 0) {
int c = charString[i];
if ((c & 0x1ffc00) == 0xd800 && i + 1 < charString.Length &&
charString[i + 1] >= 0xdc00 && charString[i + 1] <= 0xdfff) {
// Get the Unicode code point for the surrogate pair
c = 0x10000 + ((c - 0xd800) << 10) + (charString[i + 1] - 0xdc00);
++i;
} else if ((c & 0x1ff800) == 0xd800) {
// unpaired surrogate
c = 0xfffd;
}
++i;
if (c != ch) {
return false;
}
}
return i == start + length;
}
public static IList<int> GetChars(string str, Normalization form)
{
if (str == null) {
throw new ArgumentNullException("str");
}
IList<int> ret = new List<int>();
int ch;
var input = new NormalizingCharacterInput(str, form);
while ((ch = input.ReadChar()) >= 0) {
ret.Add(ch);
}
return ret;
}