// Token: 0x060005DD RID: 1501 RVA: 0x0002102C File Offset: 0x0001F22C
private void OutputChunk(byte[] bytes, ref int index, ref int size)
{
int num = Math.Min(this.bytesNeeded, this.repeatCount);
num = Math.Min(size, num);
if (bytes != null)
{
for (int i = 0; i < num; i++)
{
bytes[index++] = this.decodedByte;
}
size -= num;
}
this.runningCRC = BinHexUtils.CalculateCrc(this.decodedByte, num, this.runningCRC);
this.bytesNeeded -= num;
this.repeatCount -= num;
}
private void CompressAndEncode(byte[] input, ref int inputOffset, ref int inputSize, ref int inputTotal, ref int inputMax, bool inputIsCRC, byte[] output, ref int outputOffset, ref int outputSize)
{
byte[] bytes = null;
int index = 0;
int num = 0;
if (inputIsCRC)
{
bytes = input;
index = inputOffset;
num = inputMax;
}
int num5;
for (;;)
{
int num2 = (int)input[inputOffset++];
inputSize--;
inputTotal--;
inputMax--;
if (num2 != this.previousByte || this.repeatCount >= 254)
{
goto IL_74;
}
this.repeatCount++;
if (this.state >= BinHexUtils.State.ResourceCRC && inputMax == 0)
{
num2 = 257;
goto IL_74;
}
IL_3D5:
if (inputMax == 0)
{
goto IL_3DD;
}
continue;
IL_74:
byte[] array = new byte[5];
int num3 = 0;
if (this.repeatCount >= 2)
{
this.repeatCount++;
array[num3++] = 144;
array[num3++] = (byte)this.repeatCount;
this.repeatCount = 0;
}
else if (this.repeatCount != 0)
{
array[num3++] = (byte)this.previousByte;
if (this.previousByte == 144)
{
array[num3++] = 0;
}
this.repeatCount = 0;
}
if (num2 <= 255)
{
array[num3++] = (byte)num2;
if (num2 == 144)
{
array[num3++] = 0;
}
}
bool flag = false;
if (this.state == BinHexUtils.State.ResourceCRC && inputMax == 0 && (this.accumCount + num3) % 3 != 0)
{
array[num3++] = 0;
flag = true;
}
this.previousByte = num2;
int num4 = 0;
while (num3 != 0)
{
this.accumValue <<= 8;
this.accumValue |= (int)array[num4];
this.accumCount++;
switch (this.accumCount)
{
case 1:
this.encoded[this.encodedSize++] = BinHexEncoder.Table[this.accumValue >> 2 & 63];
this.lineOffset++;
break;
case 2:
this.encoded[this.encodedSize++] = BinHexEncoder.Table[this.accumValue >> 4 & 63];
this.lineOffset++;
break;
case 3:
this.encoded[this.encodedSize++] = BinHexEncoder.Table[this.accumValue >> 6 & 63];
this.lineOffset++;
if (!flag || 1 != num3)
{
if (this.lineOffset == 64)
{
this.encoded[this.encodedSize++] = 13;
this.encoded[this.encodedSize++] = 10;
this.lineOffset = 0;
this.lines++;
}
this.encoded[this.encodedSize++] = BinHexEncoder.Table[this.accumValue & 63];
this.lineOffset++;
}
this.accumCount = 0;
break;
}
if (this.lineOffset == 64)
{
this.encoded[this.encodedSize++] = 13;
this.encoded[this.encodedSize++] = 10;
this.lineOffset = 0;
this.lines++;
}
num3--;
num4++;
}
num5 = Math.Min(this.encodedSize, outputSize);
if (output != null)
{
Buffer.BlockCopy(this.encoded, this.encodedIndex, output, outputOffset, num5);
outputSize -= num5;
}
outputOffset += num5;
this.encodedSize -= num5;
if (this.encodedSize != 0)
{
break;
}
this.encodedIndex = 0;
goto IL_3D5;
}
this.encodedIndex += num5;
IL_3DD:
switch (this.state)
{
case BinHexUtils.State.Header:
if (this.decodedSize != 0)
{
return;
}
this.checksum = 0;
if (0L != this.header.DataForkLength)
{
this.decodedSize = (int)this.header.DataForkLength;
this.state = BinHexUtils.State.Data;
return;
}
this.macbinHeaderSize = 0;
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.decodedSize = BinHexUtils.MarshalUInt16(this.decoded, 0, this.checksum);
this.decodedIndex = 0;
this.state = BinHexUtils.State.DataCRC;
return;
case BinHexUtils.State.Data:
num -= inputMax;
this.checksum = BinHexUtils.CalculateCrc(bytes, index, num, this.checksum);
if (this.decodedSize == 0)
{
if (0L < this.header.ResourceForkLength)
{
this.macbinHeaderSize = ((this.header.DataForkLength % 128L != 0L) ? ((int)(128L - this.header.DataForkLength % 128L)) : 0);
}
else
{
this.macbinHeaderSize = 0;
}
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.decodedSize = BinHexUtils.MarshalUInt16(this.decoded, 0, this.checksum);
this.decodedIndex = 0;
this.state = BinHexUtils.State.DataCRC;
return;
}
return;
case BinHexUtils.State.DataCRC:
if (this.decodedSize != 0)
{
return;
}
this.checksum = 0;
if (0L != this.header.ResourceForkLength)
{
this.decodedSize = (int)this.header.ResourceForkLength;
this.state = BinHexUtils.State.Resource;
return;
}
this.macbinHeaderSize = 0;
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.decodedSize = BinHexUtils.MarshalUInt16(this.decoded, 0, this.checksum);
this.decodedIndex = 0;
this.state = BinHexUtils.State.ResourceCRC;
return;
case BinHexUtils.State.Resource:
num -= inputMax;
this.checksum = BinHexUtils.CalculateCrc(bytes, index, num, this.checksum);
if (this.decodedSize == 0)
{
this.macbinHeaderSize = ((this.header.ResourceForkLength % 128L != 0L) ? ((int)(128L - this.header.ResourceForkLength % 128L)) : 0);
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.decodedSize = BinHexUtils.MarshalUInt16(this.decoded, 0, this.checksum);
this.decodedIndex = 0;
this.state = BinHexUtils.State.ResourceCRC;
return;
}
return;
case BinHexUtils.State.ResourceCRC:
if (this.decodedSize == 0)
{
Buffer.BlockCopy(BinHexEncoder.BinHexSuffix, 0, this.decoded, 0, BinHexEncoder.BinHexSuffix.Length);
this.decodedIndex = 0;
this.decodedSize = BinHexEncoder.BinHexSuffix.Length;
this.state = BinHexUtils.State.Ending;
return;
}
return;
}
throw new Exception(EncodersStrings.BinHexEncoderInternalError);
}
// Token: 0x060005FD RID: 1533 RVA: 0x00022904 File Offset: 0x00020B04
internal static ushort CalculateCrc(ushort seed)
{
byte[] array = new byte[2];
byte[] array2 = array;
return(BinHexUtils.CalculateCrc(array2, 0, array2.Length, seed));
}
// Token: 0x060005DF RID: 1503 RVA: 0x00021250 File Offset: 0x0001F450
private void TransitionState()
{
switch (this.state)
{
case BinHexUtils.State.HdrFileSize:
if (this.scratch[0] > 63)
{
throw new ByteEncoderException(EncodersStrings.BinHexDecoderFileNameTooLong);
}
this.state = BinHexUtils.State.Header;
this.bytesNeeded = (int)(this.scratch[0] + 21);
return;
case BinHexUtils.State.Header:
this.header = new BinHexHeader(this.scratch);
if (!this.dataForkOnly)
{
byte[] bytes = this.header.GetBytes();
Buffer.BlockCopy(bytes, 0, this.extra, 0, bytes.Length);
this.extraIndex = 0;
this.extraSize = bytes.Length;
}
if (0L != this.header.DataForkLength)
{
this.state = BinHexUtils.State.Data;
this.bytesNeeded = (int)this.header.DataForkLength;
this.runningCRC = 0;
return;
}
this.checksum = this.runningCRC;
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.state = BinHexUtils.State.DataCRC;
this.bytesNeeded = 2;
this.scratchSize = this.scratch.Length;
this.scratchIndex = 0;
return;
case BinHexUtils.State.Data:
this.checksum = this.runningCRC;
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.state = BinHexUtils.State.DataCRC;
this.bytesNeeded = 2;
this.scratchSize = this.scratch.Length;
this.scratchIndex = 0;
return;
case BinHexUtils.State.DataCRC:
{
if ((this.checksum & 65280) >> 8 != (int)this.scratch[0] || (this.checksum & 255) != (ushort)this.scratch[1])
{
throw new ByteEncoderException(EncodersStrings.BinHexDecoderBadCrc);
}
if (this.dataForkOnly)
{
this.state = BinHexUtils.State.Ending;
this.repeatCount = 0;
this.encodedSize = 0;
this.lineReady = false;
return;
}
int num = (this.header.DataForkLength % 128L != 0L) ? ((int)(128L - this.header.DataForkLength % 128L)) : 0;
if (num != 0)
{
Array.Clear(this.extra, 0, num);
this.extraSize = num;
}
if (this.header.ResourceForkLength > 0L)
{
this.state = BinHexUtils.State.Resource;
this.bytesNeeded = (int)this.header.ResourceForkLength;
this.runningCRC = 0;
return;
}
this.checksum = 0;
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.state = BinHexUtils.State.ResourceCRC;
this.bytesNeeded = 2;
this.scratchSize = this.scratch.Length;
this.scratchIndex = 0;
return;
}
case BinHexUtils.State.Resource:
this.checksum = this.runningCRC;
this.checksum = BinHexUtils.CalculateCrc(this.checksum);
this.state = BinHexUtils.State.ResourceCRC;
this.bytesNeeded = 2;
this.scratchSize = this.scratch.Length;
this.scratchIndex = 0;
return;
case BinHexUtils.State.ResourceCRC:
{
if ((this.checksum & 65280) >> 8 != (int)this.scratch[0] || (this.checksum & 255) != (ushort)this.scratch[1])
{
throw new ByteEncoderException(EncodersStrings.BinHexDecoderBadResourceForkCrc);
}
int num = (this.header.ResourceForkLength % 128L != 0L) ? ((int)(128L - this.header.ResourceForkLength % 128L)) : 0;
if (num != 0)
{
Array.Clear(this.extra, 0, num);
this.extraSize = num;
}
this.state = BinHexUtils.State.Ending;
this.repeatCount = 0;
this.encodedSize = 0;
this.lineReady = false;
return;
}
}
throw new Exception(EncodersStrings.BinHexDecoderInternalError);
}