public BinHexHeader(MacBinaryHeader header)
{
if (63 < header.FileNameLength || 1 > header.FileNameLength)
{
throw new ByteEncoderException(EncodersStrings.BinHexHeaderBadFileNameLength);
}
this.FileName = header.FileName;
this.version = 0;
this.fileType = header.FileType;
this.fileCreator = header.FileCreator;
this.finderFlags = 0;
this.dataForkLength = header.DataForkLength;
this.resourceForkLength = header.ResourceForkLength;
this.GetBytes();
}
public sealed override void Convert(byte[] input, int inputIndex, int inputSize, byte[] output, int outputIndex, int outputSize, bool flush, out int inputUsed, out int outputUsed, out bool completed)
{
if (inputSize != 0)
{
if (input == null)
{
throw new ArgumentNullException("input");
}
if (inputIndex < 0 || inputIndex >= input.Length)
{
throw new ArgumentOutOfRangeException("inputIndex");
}
if (inputSize < 0 || inputSize > input.Length - inputIndex)
{
throw new ArgumentOutOfRangeException("inputSize");
}
}
if (output == null)
{
throw new ArgumentNullException("output");
}
if (outputIndex < 0 || outputIndex >= output.Length)
{
throw new ArgumentOutOfRangeException("outputIndex");
}
if (outputSize < 1 || outputSize > output.Length - outputIndex)
{
throw new ArgumentOutOfRangeException("outputSize");
}
inputUsed = inputIndex;
outputUsed = outputIndex;
int num = 0;
if (this.encodedSize != 0)
{
int num2 = Math.Min(this.encodedSize, outputSize);
Buffer.BlockCopy(this.encoded, this.encodedIndex, output, outputIndex, num2);
outputSize -= num2;
outputIndex += num2;
this.encodedSize -= num2;
if (this.encodedSize != 0)
{
this.encodedIndex += num2;
outputUsed = outputIndex - outputUsed;
inputUsed = 0;
completed = false;
return;
}
this.encodedIndex = 0;
}
bool flag = true;
while (flag)
{
int num3 = 0;
flag = false;
switch (this.state)
{
case BinHexUtils.State.Starting:
Buffer.BlockCopy(BinHexEncoder.BinHexPrefix, 0, this.decoded, 0, BinHexEncoder.BinHexPrefix.Length);
this.decodedIndex = 0;
this.decodedSize = BinHexEncoder.BinHexPrefix.Length;
this.state = BinHexUtils.State.Prefix;
goto IL_182;
case BinHexUtils.State.Prefix:
goto IL_182;
case BinHexUtils.State.Header:
goto IL_284;
case BinHexUtils.State.Data:
num3 = Math.Min(this.decodedSize, inputSize);
if (num3 != 0)
{
flag = true;
this.CompressAndEncode(input, ref inputIndex, ref inputSize, ref this.decodedSize, ref num3, true, output, ref outputIndex, ref outputSize);
}
break;
case BinHexUtils.State.DataCRC:
if (this.macbinHeaderSize != 0)
{
BinHexEncoder.IgnoreChunkFromInput(ref this.macbinHeaderSize, ref inputIndex, ref inputSize);
if (this.macbinHeaderSize != 0)
{
break;
}
}
num3 = this.decodedSize;
if (num3 != 0)
{
flag = true;
this.CompressAndEncode(this.decoded, ref this.decodedIndex, ref this.decodedSize, ref num, ref num3, false, output, ref outputIndex, ref outputSize);
}
break;
case BinHexUtils.State.Resource:
num3 = Math.Min(this.decodedSize, inputSize);
if (num3 != 0)
{
flag = true;
this.CompressAndEncode(input, ref inputIndex, ref inputSize, ref this.decodedSize, ref num3, true, output, ref outputIndex, ref outputSize);
}
break;
case BinHexUtils.State.ResourceCRC:
if (this.macbinHeaderSize != 0)
{
BinHexEncoder.IgnoreChunkFromInput(ref this.macbinHeaderSize, ref inputIndex, ref inputSize);
if (this.macbinHeaderSize != 0)
{
break;
}
}
num3 = this.decodedSize;
if (num3 != 0)
{
flag = true;
this.CompressAndEncode(this.decoded, ref this.decodedIndex, ref this.decodedSize, ref num, ref num3, false, output, ref outputIndex, ref outputSize);
}
break;
case BinHexUtils.State.Ending:
{
int num4 = Math.Min(this.decodedSize, outputSize);
Buffer.BlockCopy(this.decoded, this.decodedIndex, output, outputIndex, num4);
outputSize -= num4;
outputIndex += num4;
this.decodedSize -= num4;
if (this.decodedSize == 0)
{
this.decodedIndex = 0;
this.state = BinHexUtils.State.Ended;
goto IL_4F5;
}
this.decodedIndex += num4;
break;
}
case BinHexUtils.State.Ended:
goto IL_4F5;
}
IL_50B:
if (this.encodedSize == 0)
{
continue;
}
break;
IL_182:
int num5 = Math.Min(this.decodedSize, outputSize);
Buffer.BlockCopy(this.decoded, this.decodedIndex, output, outputIndex, num5);
outputSize -= num5;
outputIndex += num5;
this.decodedSize -= num5;
if (this.decodedSize != 0)
{
this.decodedIndex += num5;
goto IL_50B;
}
this.decodedIndex = 0;
this.previousByte = 256;
this.repeatCount = 0;
this.accumCount = 0;
this.lineOffset = 1;
this.lines = 0;
this.checksum = 0;
if (this.header != null)
{
byte[] bytes = this.header.GetBytes();
Buffer.BlockCopy(bytes, 0, this.decoded, 0, bytes.Length);
this.decodedSize = bytes.Length;
this.decodedIndex = 0;
this.macbinHeaderSize = 0;
}
else
{
this.macbinHeader = new byte[128];
this.macbinHeaderOffset = 0;
this.macbinHeaderSize = this.macbinHeader.Length;
}
this.state = BinHexUtils.State.Header;
IL_284:
if (this.macbinHeaderSize != 0)
{
int num6 = Math.Min(this.macbinHeaderSize, inputSize);
Buffer.BlockCopy(input, inputIndex, this.macbinHeader, this.macbinHeaderOffset, num6);
this.macbinHeaderOffset += num6;
this.macbinHeaderSize -= num6;
inputIndex += num6;
inputSize -= num6;
if (this.macbinHeaderSize != 0)
{
goto IL_50B;
}
MacBinaryHeader macBinaryHeader = new MacBinaryHeader(this.macbinHeader);
this.macbinHeader = null;
this.header = new BinHexHeader(macBinaryHeader);
byte[] bytes2 = this.header.GetBytes();
Buffer.BlockCopy(bytes2, 0, this.decoded, 0, bytes2.Length);
this.decodedSize = bytes2.Length;
this.decodedIndex = 0;
}
num3 = this.decodedSize;
if (num3 != 0)
{
flag = true;
this.CompressAndEncode(this.decoded, ref this.decodedIndex, ref this.decodedSize, ref num, ref num3, false, output, ref outputIndex, ref outputSize);
goto IL_50B;
}
goto IL_50B;
IL_4F5:
this.macbinHeaderSize = inputSize;
BinHexEncoder.IgnoreChunkFromInput(ref this.macbinHeaderSize, ref inputIndex, ref inputSize);
goto IL_50B;
}
if (flush && inputSize == 0 && this.state != BinHexUtils.State.Ended && outputSize != 0)
{
throw new ByteEncoderException(EncodersStrings.BinHexEncoderDataCorruptCannotFinishEncoding);
}
outputUsed = outputIndex - outputUsed;
inputUsed = inputIndex - inputUsed;
completed = (inputSize == 0 && (!flush || this.state == BinHexUtils.State.Ended));
if (flush && completed)
{
this.state = BinHexUtils.State.Starting;
}
}
public BinHexEncoder(MacBinaryHeader header)
{
this.MacBinaryHeader = header;
}
