private unsafe int GetCharsInternal(byte *bytes, int byteCount, char *chars, int charCount)
{
int num = byteCount / 2;
if (charCount < num)
{
throw new ArgumentException(Encoding._("Arg_InsufficientSpace"));
}
UnicodeEncoding.CopyChars(bytes, (byte *)chars, byteCount, this.bigEndian);
return(num);
}
public unsafe override int GetChars(byte[] bytes, int byteIndex, int byteCount, char[] chars, int charIndex)
{
if (bytes == null)
{
throw new ArgumentNullException("bytes");
}
if (chars == null)
{
throw new ArgumentNullException("chars");
}
if (byteIndex < 0 || byteIndex > bytes.Length)
{
throw new ArgumentOutOfRangeException("byteIndex", Encoding._("ArgRange_Array"));
}
if (byteCount < 0 || byteCount > bytes.Length - byteIndex)
{
throw new ArgumentOutOfRangeException("byteCount", Encoding._("ArgRange_Array"));
}
if (charIndex < 0 || charIndex > chars.Length)
{
throw new ArgumentOutOfRangeException("charIndex", Encoding._("ArgRange_Array"));
}
if (byteCount == 0)
{
return(0);
}
int num = this.leftOverByte;
int num2;
if (num != -1)
{
num2 = (byteCount + 1) / 2;
}
else
{
num2 = byteCount / 2;
}
if (chars.Length - charIndex < num2)
{
throw new ArgumentException(Encoding._("Arg_InsufficientSpace"));
}
if (num != -1)
{
if (this.bigEndian)
{
chars[charIndex] = (char)(num << 8 | (int)bytes[byteIndex]);
}
else
{
chars[charIndex] = (char)((int)bytes[byteIndex] << 8 | num);
}
charIndex++;
byteIndex++;
byteCount--;
}
if ((byteCount & -2) != 0)
{
fixed(byte *ptr = ref (bytes != null && bytes.Length != 0)?ref bytes[0] : ref *null)
{
fixed(char *ptr2 = ref (chars != null && chars.Length != 0)?ref chars[0] : ref *null)
{
UnicodeEncoding.CopyChars(ptr + byteIndex, (byte *)(ptr2 + charIndex), byteCount, this.bigEndian);
}
}
}
if ((byteCount & 1) == 0)
{
this.leftOverByte = -1;
}
else
{
this.leftOverByte = (int)bytes[byteCount + byteIndex - 1];
}
return(num2);
}