internal override unsafe int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS baseDecoder)
{
GB18030Encoding.GB18030Decoder gb18030Decoder = (GB18030Encoding.GB18030Decoder)baseDecoder;
Encoding.EncodingCharBuffer encodingCharBuffer = new Encoding.EncodingCharBuffer((Encoding)this, (DecoderNLS)gb18030Decoder, chars, charCount, bytes, byteCount);
short num1 = -1;
short num2 = -1;
short num3 = -1;
short num4 = -1;
if (gb18030Decoder != null && (int)gb18030Decoder.bLeftOver1 != -1)
{
num1 = gb18030Decoder.bLeftOver1;
num2 = gb18030Decoder.bLeftOver2;
num3 = gb18030Decoder.bLeftOver3;
num4 = gb18030Decoder.bLeftOver4;
while ((int)num1 != -1)
{
if (!this.IsGBLeadByte(num1))
{
if ((int)num1 <= (int)sbyte.MaxValue)
{
if (!encodingCharBuffer.AddChar((char)num1))
{
break;
}
}
else if (!encodingCharBuffer.Fallback((byte)num1))
{
break;
}
num1 = num2;
num2 = num3;
num3 = num4;
num4 = (short)-1;
}
else
{
while ((int)num2 == -1 || this.IsGBFourByteTrailing(num2) && (int)num4 == -1)
{
if (!encodingCharBuffer.MoreData)
{
if (!gb18030Decoder.MustFlush)
{
if ((IntPtr)chars != IntPtr.Zero)
{
gb18030Decoder.bLeftOver1 = num1;
gb18030Decoder.bLeftOver2 = num2;
gb18030Decoder.bLeftOver3 = num3;
gb18030Decoder.bLeftOver4 = num4;
}
gb18030Decoder.m_bytesUsed = encodingCharBuffer.BytesUsed;
return(encodingCharBuffer.Count);
}
break;
}
if ((int)num2 == -1)
{
num2 = (short)encodingCharBuffer.GetNextByte();
}
else if ((int)num3 == -1)
{
num3 = (short)encodingCharBuffer.GetNextByte();
}
else
{
num4 = (short)encodingCharBuffer.GetNextByte();
}
}
if (this.IsGBTwoByteTrailing(num2))
{
int index = (int)num1 << 8 | (int)(byte)num2;
if (encodingCharBuffer.AddChar(this.mapBytesToUnicode[index], 2))
{
num1 = (short)-1;
num2 = (short)-1;
}
else
{
break;
}
}
else if (this.IsGBFourByteTrailing(num2) && this.IsGBLeadByte(num3) && this.IsGBFourByteTrailing(num4))
{
int fourBytesOffset = this.GetFourBytesOffset(num1, num2, num3, num4);
if (fourBytesOffset <= 39419)
{
if (!encodingCharBuffer.AddChar(this.map4BytesToUnicode[fourBytesOffset], 4))
{
break;
}
}
else if (fourBytesOffset >= 189000 && fourBytesOffset <= 1237575)
{
int num5 = fourBytesOffset - 189000;
if (!encodingCharBuffer.AddChar((char)(55296 + num5 / 1024), (char)(56320 + num5 % 1024), 4))
{
break;
}
}
else if (!encodingCharBuffer.Fallback((byte)num1, (byte)num2, (byte)num3, (byte)num4))
{
break;
}
num1 = (short)-1;
num2 = (short)-1;
num3 = (short)-1;
num4 = (short)-1;
}
else if (encodingCharBuffer.Fallback((byte)num1))
{
num1 = num2;
num2 = num3;
num3 = num4;
num4 = (short)-1;
}
else
{
break;
}
}
}
}
while (encodingCharBuffer.MoreData)
{
byte nextByte1 = encodingCharBuffer.GetNextByte();
if ((int)nextByte1 <= (int)sbyte.MaxValue)
{
if (!encodingCharBuffer.AddChar((char)nextByte1))
{
break;
}
}
else if (this.IsGBLeadByte((short)nextByte1))
{
if (encodingCharBuffer.MoreData)
{
byte nextByte2 = encodingCharBuffer.GetNextByte();
if (this.IsGBTwoByteTrailing((short)nextByte2))
{
int index = (int)nextByte1 << 8 | (int)nextByte2;
if (!encodingCharBuffer.AddChar(this.mapBytesToUnicode[index], 2))
{
break;
}
}
else if (this.IsGBFourByteTrailing((short)nextByte2))
{
if (encodingCharBuffer.EvenMoreData(2))
{
byte nextByte3 = encodingCharBuffer.GetNextByte();
byte nextByte4 = encodingCharBuffer.GetNextByte();
if (this.IsGBLeadByte((short)nextByte3) && this.IsGBFourByteTrailing((short)nextByte4))
{
int fourBytesOffset = this.GetFourBytesOffset((short)nextByte1, (short)nextByte2, (short)nextByte3, (short)nextByte4);
if (fourBytesOffset <= 39419)
{
if (!encodingCharBuffer.AddChar(this.map4BytesToUnicode[fourBytesOffset], 4))
{
break;
}
}
else if (fourBytesOffset >= 189000 && fourBytesOffset <= 1237575)
{
int num5 = fourBytesOffset - 189000;
if (!encodingCharBuffer.AddChar((char)(55296 + num5 / 1024), (char)(56320 + num5 % 1024), 4))
{
break;
}
}
else if (!encodingCharBuffer.Fallback(nextByte1, nextByte2, nextByte3, nextByte4))
{
break;
}
}
else
{
encodingCharBuffer.AdjustBytes(-3);
if (!encodingCharBuffer.Fallback(nextByte1))
{
break;
}
}
}
else
{
if (gb18030Decoder != null && !gb18030Decoder.MustFlush)
{
if ((IntPtr)chars != IntPtr.Zero)
{
num1 = (short)nextByte1;
num2 = (short)nextByte2;
num3 = !encodingCharBuffer.MoreData ? (short)-1 : (short)encodingCharBuffer.GetNextByte();
num4 = (short)-1;
break;
}
break;
}
if (!encodingCharBuffer.Fallback(nextByte1, nextByte2))
{
break;
}
}
}
else
{
encodingCharBuffer.AdjustBytes(-1);
if (!encodingCharBuffer.Fallback(nextByte1))
{
break;
}
}
}
else
{
if (gb18030Decoder != null && !gb18030Decoder.MustFlush)
{
if ((IntPtr)chars != IntPtr.Zero)
{
num1 = (short)nextByte1;
num2 = (short)-1;
num3 = (short)-1;
num4 = (short)-1;
break;
}
break;
}
if (!encodingCharBuffer.Fallback(nextByte1))
{
break;
}
}
}
else if (!encodingCharBuffer.Fallback(nextByte1))
{
break;
}
}
if (gb18030Decoder != null)
{
if ((IntPtr)chars != IntPtr.Zero)
{
gb18030Decoder.bLeftOver1 = num1;
gb18030Decoder.bLeftOver2 = num2;
gb18030Decoder.bLeftOver3 = num3;
gb18030Decoder.bLeftOver4 = num4;
}
gb18030Decoder.m_bytesUsed = encodingCharBuffer.BytesUsed;
}
return(encodingCharBuffer.Count);
}
internal unsafe override int GetChars(byte *bytes, int byteCount, char *chars, int charCount, DecoderNLS baseDecoder)
{
GB18030Encoding.GB18030Decoder gb18030Decoder = (GB18030Encoding.GB18030Decoder)baseDecoder;
Encoding.EncodingCharBuffer encodingCharBuffer = new Encoding.EncodingCharBuffer(this, gb18030Decoder, chars, charCount, bytes, byteCount);
short num = -1;
short num2 = -1;
short num3 = -1;
short num4 = -1;
if (gb18030Decoder != null && gb18030Decoder.bLeftOver1 != -1)
{
num = gb18030Decoder.bLeftOver1;
num2 = gb18030Decoder.bLeftOver2;
num3 = gb18030Decoder.bLeftOver3;
num4 = gb18030Decoder.bLeftOver4;
while (num != -1)
{
if (!this.IsGBLeadByte(num))
{
if (num <= 127)
{
if (!encodingCharBuffer.AddChar((char)num))
{
break;
}
}
else if (!encodingCharBuffer.Fallback((byte)num))
{
break;
}
num = num2;
num2 = num3;
num3 = num4;
num4 = -1;
}
else
{
while (num2 == -1 || (this.IsGBFourByteTrailing(num2) && num4 == -1))
{
if (!encodingCharBuffer.MoreData)
{
if (!gb18030Decoder.MustFlush)
{
if (chars != null)
{
gb18030Decoder.bLeftOver1 = num;
gb18030Decoder.bLeftOver2 = num2;
gb18030Decoder.bLeftOver3 = num3;
gb18030Decoder.bLeftOver4 = num4;
}
gb18030Decoder.m_bytesUsed = encodingCharBuffer.BytesUsed;
return(encodingCharBuffer.Count);
}
break;
}
else if (num2 == -1)
{
num2 = (short)encodingCharBuffer.GetNextByte();
}
else if (num3 == -1)
{
num3 = (short)encodingCharBuffer.GetNextByte();
}
else
{
num4 = (short)encodingCharBuffer.GetNextByte();
}
}
if (this.IsGBTwoByteTrailing(num2))
{
int num5 = (int)num << 8;
num5 |= (int)((byte)num2);
if (!encodingCharBuffer.AddChar(this.mapBytesToUnicode[num5], 2))
{
break;
}
num = -1;
num2 = -1;
}
else if (this.IsGBFourByteTrailing(num2) && this.IsGBLeadByte(num3) && this.IsGBFourByteTrailing(num4))
{
int num6 = this.GetFourBytesOffset(num, num2, num3, num4);
if (num6 <= 39419)
{
if (!encodingCharBuffer.AddChar(this.map4BytesToUnicode[num6], 4))
{
break;
}
}
else if (num6 >= 189000 && num6 <= 1237575)
{
num6 -= 189000;
if (!encodingCharBuffer.AddChar((char)(55296 + num6 / 1024), (char)(56320 + num6 % 1024), 4))
{
break;
}
}
else if (!encodingCharBuffer.Fallback((byte)num, (byte)num2, (byte)num3, (byte)num4))
{
break;
}
num = -1;
num2 = -1;
num3 = -1;
num4 = -1;
}
else
{
if (!encodingCharBuffer.Fallback((byte)num))
{
break;
}
num = num2;
num2 = num3;
num3 = num4;
num4 = -1;
}
}
}
}
while (encodingCharBuffer.MoreData)
{
byte nextByte = encodingCharBuffer.GetNextByte();
if (nextByte <= 127)
{
if (!encodingCharBuffer.AddChar((char)nextByte))
{
break;
}
}
else if (this.IsGBLeadByte((short)nextByte))
{
if (encodingCharBuffer.MoreData)
{
byte nextByte2 = encodingCharBuffer.GetNextByte();
if (this.IsGBTwoByteTrailing((short)nextByte2))
{
int num7 = (int)nextByte << 8;
num7 |= (int)nextByte2;
if (!encodingCharBuffer.AddChar(this.mapBytesToUnicode[num7], 2))
{
break;
}
}
else if (this.IsGBFourByteTrailing((short)nextByte2))
{
if (encodingCharBuffer.EvenMoreData(2))
{
byte nextByte3 = encodingCharBuffer.GetNextByte();
byte nextByte4 = encodingCharBuffer.GetNextByte();
if (this.IsGBLeadByte((short)nextByte3) && this.IsGBFourByteTrailing((short)nextByte4))
{
int num8 = this.GetFourBytesOffset((short)nextByte, (short)nextByte2, (short)nextByte3, (short)nextByte4);
if (num8 <= 39419)
{
if (!encodingCharBuffer.AddChar(this.map4BytesToUnicode[num8], 4))
{
break;
}
}
else if (num8 >= 189000 && num8 <= 1237575)
{
num8 -= 189000;
if (!encodingCharBuffer.AddChar((char)(55296 + num8 / 1024), (char)(56320 + num8 % 1024), 4))
{
break;
}
}
else if (!encodingCharBuffer.Fallback(nextByte, nextByte2, nextByte3, nextByte4))
{
break;
}
}
else
{
encodingCharBuffer.AdjustBytes(-3);
if (!encodingCharBuffer.Fallback(nextByte))
{
break;
}
}
}
else if (gb18030Decoder != null && !gb18030Decoder.MustFlush)
{
if (chars != null)
{
num = (short)nextByte;
num2 = (short)nextByte2;
if (encodingCharBuffer.MoreData)
{
num3 = (short)encodingCharBuffer.GetNextByte();
}
else
{
num3 = -1;
}
num4 = -1;
break;
}
break;
}
else if (!encodingCharBuffer.Fallback(nextByte, nextByte2))
{
break;
}
}
else
{
encodingCharBuffer.AdjustBytes(-1);
if (!encodingCharBuffer.Fallback(nextByte))
{
break;
}
}
}
else if (gb18030Decoder != null && !gb18030Decoder.MustFlush)
{
if (chars != null)
{
num = (short)nextByte;
num2 = -1;
num3 = -1;
num4 = -1;
break;
}
break;
}
else if (!encodingCharBuffer.Fallback(nextByte))
{
break;
}
}
else if (!encodingCharBuffer.Fallback(nextByte))
{
break;
}
}
if (gb18030Decoder != null)
{
if (chars != null)
{
gb18030Decoder.bLeftOver1 = num;
gb18030Decoder.bLeftOver2 = num2;
gb18030Decoder.bLeftOver3 = num3;
gb18030Decoder.bLeftOver4 = num4;
}
gb18030Decoder.m_bytesUsed = encodingCharBuffer.BytesUsed;
}
return(encodingCharBuffer.Count);
}